DATN_Dieu Khien Thiet Bi Tu Xa Bang Dtdd Dung Sms

TRNG I HC S PHM K THUT TP. H CH MINH KHOA IN IN T ----- ----B MN : IN T VIN THNG

N TT NGHIP TI :

THIT K V THI CNG H THNG IU KHIN THIT B T XA BNG IN THOI DI NG DNG SMS

GVHD : SVTH :

PGS.TS Trn Thu H Phan Hiu Nhn H Th Thu Ha 06117049 06117026

TP.HCM, Thng 1 nm 2011

Phn A GII THIU

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Gii thiuNgi nh thng minh l mt cm t khng cn xa l i vi nn cng ngh pht trin hin nay. Lc u, tng c thc hin nh vo tia hng ngoi iu khin t xa, nhng khong cch b hn ch. V sau, nhiu nghin cu nhm ci tin khong cch iu khin mang li nhiu thnh cng v c ngha thc tin nh iu khin thng qua ng dy in, ng dy in thoiKhi cng ngh wireless pht trin, ngi ta li ngh n iu khin qua mng khng dy_iu khin t xa dng my tnh ra i. Khng dng li , khi m cc mng in thoi ang cnh tranh gay gt, chic in thoi tr nn vt dng khng th thiu ca mi c nhn, ngi ta li ngh v mt chic in thoi tch hp kh nng iu khin t xa. i cng xu hng pht trin , nhm thc hin chn ti: Thit k v thi cng h thng iu khin thit b t xa bng in thoi di ng dng SMS. Vi ti ny, nhm mun s dng in thoi di ng iu khin thit b in dn dng, dng Module Sim300CZ trn nn mng GSM thu SMS iu khin. Nhm hi vng vi ti ny s lm c s nghin cu cho cc nhm khc sau ny c th m rng, pht trin hn na.

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Li cm nChng em xin chn thnh cm n qu thy, c trng i Hc S Phm K Thut tn tnh dy d trong sut nhng nm qua. Trong phi k n qu thy c trong Khoa in in T to iu kin cho chng em thc hin n tt nghip ny. c bit, nhm xin chn thnh cm n gio vin hng dn T.S Trn Thu H tn tnh gip chng em trong qu trnh la chn ti v h tr chng em trong qu trnh thc hin ti. Bn cnh , nhm thc hin cng xin cm n cc bn sinh vin vin thng ng gp kin cho nhm thc hin ti t hiu qu hn. Vi thi gian thc hin ti ngn, kin thc cn hn hp, d nhm rt c gng nhng vn khng trnh khi nhng sai st, nhm rt mong nhn c li ch dn thm ca qu thy c v bn b.

TPHCM, ngythngnm 2010 Sinh vin thc hin Phan Hiu Nhn H Th Thu Ha

n tt nghipB GIO DC V O TO TRNG I HC S PHM K THUT TP. H CH MINH

trang ivCNG HA X HI CH NGHA VIT NAM C LP-T DO-HNH PHC

QUYT NH GIAO TIH v tn sinh vin: Phan Hiu Nhn H Th Thu Ha Ngnh: Tn ti: 1) C s ban u: ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... 2) Ni dung cc phn thuyt minh v tnh ton: ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... 3) Cc bn v: ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... 4) Gio vin hng dn: 5) Ngy giao nhim v: 6) Ngy hon thnh nhim v: Gio vin hng dn Ngy ...... thng ...... nm 2011 Ch nhim b mn Cng Ngh in T-Vin ThngTHIT K V THI CNG H THNG IU KHIN THIT B T XA BNG IN THOI DI NG DNG SMS

MSSV: 06117049 MSSV: 06117026

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NHN XT CA GIO VIN HNG DN .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... ..........................................................................................................................

Tp HCM, ngy ...... thng ...... nm 2011 Gio vin hng dn

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NHN XT CA GIO VIN PHN BIN .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... .......................................................................................................................... ..........................................................................................................................

Tp HCM, ngy ...... thng ...... nm 2011 Gio vin phn bin

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Li ni uNgnh vin thng ang ng vai tr rt quan trng trong nn kinh t ca mi quc gia, n gip con ngi tin gn hn vi nn khoa hc k thut ang pht trin nh v bo ca nhn loi hin nay. H thng truyn thng khng ngng pht trin t c nh sang di ng. Con ngi c th lin lc vi nhau d bt c ni u. Da vo t tnh truyn tin xa v vn dng t tnh ny, nhm chn ti: Thit k v thi cng h thng iu khin thit b t xa bng in thoi di ng dng SMS, nhm ci tin khong cch iu khin trong cng ngh ngi nh thng minh hin nay. ti tuy cn n gin, thit b iu khin khng nhiu, nhng nhm mong y s l ti liu b ch cho nhng ai quan tm v mong mun pht trin theo cng ngh iu khin ny. Nhm cng rt mong nhn c s ng gp ca qu thy c, cc bn sinh vin cng nhau c kin thc su hn v c kinh nghim tt hn trong vic thi cng phn cng cho mt m hnh iu khin hon chnh.

Nhm sinh vin thc hin Phan Hiu Nhn H Th Thu Ha

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MC LCPHN A : G II THIU ....................................................................................................... i Li cm n ........................................................................................................................iii Quyt nh giao ti ...................................................................................................... iv Nhn xt ca gio vin hng dn ................................................................................. iv Nhn xt ca gio vin phn bin .................................................................................. vi Li ni u .......................................................................................................................vii Mc lc ........................................................................................................................... viii Lit k hnh ......................................................................................................................xii Lit k bng.....................................................................................................................xiv PHN B : NI DUNG ......................................................................................................... 1 Chng 1: Dn nhp ............................................................................................................... 2 1.1 Gii thiu ti................................................................................................................. 2 1.2 ngha khoa hc ca ti ............................................................................................ 3 1.3 Mc ch nghin cu ........................................................................................................ 3 Chng 2: C s l lun......................................................................................................... 5 2.1 Tnh hnh nghin cu trong nc v ngoi nc.......................................................... 5 2.1.1 Ngoi nc ............................................................................................................... 5 2.1.2 Trong nc ............................................................................................................... 6 2.2 tng thit k................................................................................................................. 8 2.3 cng nghin cu chi tit .......................................................................................... 8 2.4 Phng php nghin cu ................................................................................................. 8 2.5 Phng tin nghin cu ................................................................................................... 8 Chng 3: L thuyt lin quan .......................................................................................... 9 3.1 Tng quan v cng ngh GSM........................................................................................ 9 3.1.1 Gii thiu v cng ngh GSM ............................................................................... 9 3.1.2 c im ca cng ngh GSM .............................................................................. 9 3.1.3 Cu trc ca mng GSM....................................................................................... 10 3.1.3.1 Cu trc tng qut ........................................................................................... 10 3.1.3.2 Cc thnh phn ca cng ngh mng GSM ................................................. 10 3.1.4 S pht trin ca cng ngh GSM Vit Nam ................................................ 11

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3.2 Tng quan v SMS ......................................................................................................... 12 3.2.1 Gii thiu v SMS ................................................................................................. 12 3.2.2 Cu trc mt tin nhn SMS .................................................................................. 12 3.2.3 u im ca SMS ................................................................................................. 13 3.2.4 Tin nhn SMS chui/tin nhn SMS di .............................................................. 13 3.2.5 SMS center/SMSC ................................................................................................ 13 3.2.6 SMS quc t ........................................................................................................... 14 3.2.7 SMS gateway ......................................................................................................... 14 3.3 Gii thiu Module Sim300CZ....................................................................................... 15 3.3.1 c im ca Module Sim300CZ ....................................................................... 15 3.3.2 Kho st s chn v chc nng tng chn .................................................... 17 3.3.3 Cc ch hot ng ca Module Sim300CZ .................................................. 23 3.3.4 Tp lnh AT ca module Sim 300CZ ................................................................. 23 3.3.4.1 Cc thut ng ................................................................................................... 23 3.3.4.2 C php lnh AT.............................................................................................. 23 3.3.4.5 c tin nhn ..................................................................................................... 33 3.3.4.6 Gi tin nhn ...................................................................................................... 34 3.4 Gii thiu vi iu khin 89C52 ..................................................................................... 35 3.4.1 S chn vi iu khin 89C52 .......................................................................... 36 3.4.2 T chc b nh trong vi iu khin 89C52........................................................ 38 3.4.3 Hot ng truyn d liu ca vi iu khin 89C52.......................................... 39 3.4.3.1 Gii thiu .......................................................................................................... 39 3.4.3.2 Thanh ghi iu khin truyn d liu ni tip ............................................... 41 3.4.3.3 Cc kiu truyn d liu ni tip..................................................................... 42 3.4.4 Tp lnh ca vi iu khin 89C52 ....................................................................... 43 3.4.5 Ngun cung cp ..................................................................................................... 43 3.4.6 Mch dao ng....................................................................................................... 44 Chng 4: Thit k v thi cng ........................................................................................ 45 4.1 Phng n thit k .......................................................................................................... 45 4.2 S khi ........................................................................................................................ 46 4.2.1 Chc nng tng khi ............................................................................................. 46

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4.2.2 Nguyn l hot ng ............................................................................................. 47 4.3 Thit k v thi cng phn cng ..................................................................................... 49 4.3.1 S nguyn l v tnh ton................................................................................ 49 4.3.1.1 Module Sim300CZ .......................................................................................... 49 4.3.1.2 Khi giao tip ................................................................................................... 50 4.3.1.3 Khi ngun ....................................................................................................... 51 4.3.1.4 Khi vi iu khin ........................................................................................... 52 4.3.1.5 Khi cng sut ................................................................................................. 52 4.3.1.6 Khi hin th LCD ........................................................................................... 55 4.3.2 Mch Layout .......................................................................................................... 56 4.3.2.1 Module Sim300CZ, khi ngun, khi giao tip .......................................... 56 4.3.2.2 Khi vi iu khin ........................................................................................... 56 4.3.2.3 Khi cng sut ................................................................................................ 56 4.3.2.4 Khi hin th LCD .......................................................................................... 56 4.3.3 Mch thc t ........................................................................................................... 57 4.3.3.1 Module Sim300CZ, khi ngun, khi giao tip .......................................... 57 4.3.3.2 Khi vi iu khin ........................................................................................... 57 4.3.3.3 Khi cng sut ................................................................................................. 57 4.3.3.4 Khi hin th LCD ........................................................................................... 58 4.4 Thit k v thi cng phn mm ..................................................................................... 59 4.4.1 tng chng trnh ............................................................................................ 59 4.4.2 Lu chng trnh chnh ................................................................................... 59 4.4.3 Lu chng trnh x l tin nhn .................................................................... 60 4.4.4 Lu chng trnh iu khin thit b ............................................................. 60 4.4.5 Lu chng trnh nhn d liu ....................................................................... 61 4.4.6 Lu chng trnh gi d liu.......................................................................... 62 4.4.7 Lu chng trnh ly a ch .......................................................................... 62 4.4.8 Lu chng trnh iu khin thit b ............................................................. 63 4.4.9 Lu chng trnh kim tra thit b ................................................................. 63 4.4.10 Lu chng trnh gi tin nhn ..................................................................... 64 4.4.11 Khi to cho module SIM300CZ ...................................................................... 64

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Chng 5: Kt lun v hng pht trin ti ........................................................... 66 5.1 Kt qu thc hin ............................................................................................................ 66 5.2 M t h thng................................................................................................................. 66 5.3 u im v khuyt im ca h thng......................................................................... 67 5.4 Kh nng ng dng thc t ca ti .......................................................................... 68 5.5 Hng pht trin ............................................................................................................. 68 PHN C : PH LC V TI LIU THAM KHO ................................................. 69 Ph lc I: M ngun chng trnh ...................................................................................... 70 Ph lc II: Hng dn s dng sn phm .......................................................................... 81 Ti liu tham kho................................................................................................................. 82

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LIT K HNHChng 2 Hnh 2.1 : in thoi tch hp chc nng iu khin t ---------------------------- 5 Hnh 2.2 : M hnh iu khin thit b qua SMS --------------------------------------- 6 Hnh 2.3 : S khi h thng iu khin qua my tnh ------------------------------ 7 Chng 3 Hnh 3.1 : Cu trc ca mng GSM ---------------------------------------------------10 Hnh 3.2 : Cc thnh phn mng GSM -----------------------------------------------11 Hnh 3.3 : Cu trc ca mt tin nhn SMS --------------------------------------------12 Hnh 3.4 : SMS gateway-----------------------------------------------------------------14 Hnh 3.5 : Module Sim300CZ ----------------------------------------------------------15 Hnh 3.6 : S chn ca module SIM 300CZ ---------------------------------------17 Hnh 3.7 : Khi to cu hnh mc nh SIM 300CZ ----------------------------------31 Hnh 3.8 : c tin nhn t 2 vng nh 1 v 2 trn SIM------------------------------33 Hnh 3.9 : Gi tin nhn -----------------------------------------------------------------34 Hnh 3.10: S chn 89C52 ----------------------------------------------------------36 Hnh 3.11 : B nh ca vi iu khin 89C52------------------------------------------39 Hnh 3.12 : S h thng truyn d liu---------------------------------------------40 Hnh 3.13 : Cu trc thanh ghi SCON -------------------------------------------------41 Hnh 3.14 : thch anh -------------------------------------------------------------------44 Chng 4 Hnh 4.1 : S khi h thng ---------------------------------------------------------46 Hnh 4.2 : S capture Module Sim300CZ------------------------------------------49 Hnh 4.3 : S kt ni truyn d liu ------------------------------------------------50 Hnh 4.4 : S capture khi giao tip -----------------------------------------------50 Hnh 4.5 : S capture khi ngun --------------------------------------------------51 Hnh 4.5 : S capture khi vi iu khin -------------------------------------------52 Hnh 4.6 : Triac --------------------------------------------------------------------------53 Hnh 4.7 : S capture khi cng sut ----------------------------------------------54 Hnh 4.8 : S capture khi hin th LCD-------------------------------------------55 Hnh 4.9: S layout Module Sim300CZ --------------------------------------------56 Hnh 4.10: S layout khi vi iu khin --------------------------------------------56 Hnh 4.11 : S layout khi cng sut-----------------------------------------------56 Hnh 4.12 : S layout khi hin th LCD -------------------------------------------57 Hnh 4.13 : Mch thc t Module Sim300CZ -----------------------------------------57 Hnh 4.14 : Mch thc t khi vi iu khin ------------------------------------------57 Hnh 4.15 : Mch thc t khi cng sut ----------------------------------------------58 Hnh 4.16 : Mch thc t khi hin th LCD ------------------------------------------58

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Hnh 4.17 : Lu chng trnh chnh------------------------------------------------59 Hnh 4.18 : Lu chng trnh x l tin nhn --------------------------------------60 Hnh 4.19 : Lu chng trnh iu khin thit b ---------------------------------60 Hnh 4.20 : Lu chng trnh con nhn d liu-----------------------------------61 Hnh 4.21 : Lu chng trnh con gi d liu ------------------------------------62 Hnh 4.22 : Lu chng trnh con ly a ch -------------------------------------62 Hnh 4.23 : Lu chng trnh con iu khin m thit b ------------------------63 Hnh 4.24 : Lu chng trnh con tt thit b -------------------------------------63 Hnh 4.25 : Lu chng trnh con kim tra thit b-------------------------------63 Hnh 4.26 : Lu chng trnh con gi tin nhn -----------------------------------64

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LIT K BNGChng 3 Bng 3.1: Chc nng chn Module Sim300CZ ---------------------------------------17 Bng 3.2 : Ch lnh AT --------------------------------------------------------------25 Bng 3.3 : Mt s lnh AT --------------------------------------------------------------25 Bng 3.4 : Lnh AT+CMGR ------------------------------------------------------------26 Bng 3.5 : Lnh AT+CMGS ------------------------------------------------------------26 Bng 3.6 : Lnh AT+CMSS -------------------------------------------------------------26 Bng 3.7 : Lnh AT+CMGD------------------------------------------------------------27 Bng 3.8 : Lnh ATE --------------------------------------------------------------------28 Bng 3.9 : Lnh AT+CLIP --------------------------------------------------------------28 Bng 3.10 : Lnh AT&W ----------------------------------------------------------------29 Bng 3.11 : Lnh AT+CMGF ----------------------------------------------------------29 Bng 3.12: Lnh AT+CNMI ------------------------------------------------------------29 Bng 3.13: Lnh AT+CSAS -------------------------------------------------------------30 Bng 3.14 : Chc nng cc chn ca Port 1 ------------------------------------------36 Bng 3.15 : Chc nng cc chn ca Port 3 -----------------------------------------37 Bng 3.16 : Cc bit trong thanh ghi iu khin truyn d liu ----------------------41 Bng 3.17 : Cc kiu truyn d liu ---------------------------------------------------42 Chng 4: Bng 4.1 : Cc bc thit lp cu hnh cho module SIM300CZ --------------------65

Phn B NI DUNG

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CHNG 1:

DN NHP1.1 Gii thiu tiNgy nay cng vi s pht trin mnh m ca cc ngnh khoa hc k thut, cng ngh k thut in t m trong c bit l k thut iu khin t ng ng vai tr quan trng trong mi lnh vc khoa hc k thut, qun l, cng nghip, cung cp thng tin ... Do , l mt sinh vin chuyn ngnh in t - Vin thng chng ta phi bit nm bt v vn dng n mt cch c hiu qu nhm gp phn vo s pht trin nn khoa hc k thut th gii ni chung v trong s pht trin k thut in t, tuyn thng ni ring. Bn cnh cn l s thc y s pht trin ca nn kinh t nc nh. Nh chng ta bit, gn nh cc thit b t ng trong nh my, trong i sng ca cc gia nh ngy nay u hot ng c lp vi nhau, mi thit b c mt quy trnh s dng khc nhau tu thuc vo s thit lp, ci t ca ngi s dng. Chng cha c mt s lin kt no vi nhau v mt d liu. Nhng i vi h thng iu khin thit b t xa thng qua tin nhn SMS th li khc. y, cc thit b iu khin t ng c kt ni vi nhau thnh mt h thng hon chnh qua mt mt thit b trung tm v c th giao tip vi nhau v mt d liu. in hnh ca mt h thng iu khin thit b trong nh t xa thng qua tin nhn SMS gm c cc thit b n gin nh bng n, qut my, l si n cc thit b tinh vi, phc tp nh tivi, my git, h thng bo ng N hot ng nh mt ngi nh thng minh. Ngha l tt c cc thit b ny c th giao tip vi nhau v mt d liu thng qua mt u no trung tm. u no trung tm y c th l mt my vi tnh hon chnh hoc c th l mt b x l c lp trnh sn tt c cc chng trnh iu khin. Bnh thng, cc thit b trong ngi nh ny c th c iu khin t xa thng qua cc tin nhn ca ch nh. Chng hn nh vic tt qut, n in khi ngi ch nh qun cha tt trc khi ra khi nh. Hay ch vi mt tin nhn SMS, ngi ch nh c th bt my iu ha lm mt phng trc khi v nh trong mt khong thi gian nht nh.. Ngoi ra, h thng cn mang tnh bo mt. Ngha l ch c ch nh hay ngi bit mt khu ca ngi nh th mi iu khin c ngi nh ny. T nhng yu cu thc t, nhng i hi ngy cng cao ca cuc sng, cng vi s hp tc, pht trin mnh m ca mng di ng nn chng em chn ti " Thit k v thi cng h thng iu khin thit b t xa bng in thoi di ng dng SMS " p ng c nhu cu ngy cng cao ca con ngi v gp phn vo s tin b, vn minh, hin i ca nc nh.

Chng 1 : Dn nhp

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1.2 ngha khoa hc ca tiNgy nay cng vi s tin b ca khoa hc k thut, cc thit b in t ra i ngy cng nhiu v chng loi cng nh tnh nng s dng. Bn cnh nhu cu s dng cc thit b mt cch t ng ngy cng cao, con ngi ngy cng mun c nhiu thit b gii tr cng nh cc thit b sinh hot vi k thut v cng ngh ngy cng cao. C th Vit nam cha pht trin mnh m trong lnh vc ny nhng hin nay trn th gii, nht l cc quc gia thuc Chu u hay M th m hnh ngi nh t ng c iu khin t xa pht trin rt mnh m. T nhng nhu cu thc t , nhm mun a mt phn nhng k thut hin i ca th gii p dng vo iu kin thc t trong nc c th to ra mt h thng iu khin thit b trong nh t xa thng qua tin nhn SMS nhm p ng nhu cu ngy cng cao ca con ngi. ti ly c s l tin nhn SMS iu khin thit b. Vic s dng tin nhn SMS iu khin thit b c thun li l tit kim chi ph, mang tnh cnh tranh v c ng cao (ngha l ch no c ph sng mng in thoi di ng ta cng c th iu khin thit b c). Ngoi ra, sn phm ca ti ny c tnh m, c th p dng cho nhiu i tng khc nhau trong dn dng cng nh trong cng nghip.

1.3 Mc ch nghin cu n c nghin cu, kho st v thc hin vi mc ch p dng nhng kin thc c hc trong nh trng thit k, to ra mt h thng iu khin t ng t xa bng in thoi di ng hon chnh. H thng tch hp module nhn tin nhn s dng mng GSM, module x l d liu, module cng sut cho cc thit b trong nh. Qua x l, d liu s c gi v thit b u cui (mobile) ca ngi iu khin bo cho bit trng thi ca cc thit b c iu khin. H thng iu khin thit b t xa bng in thoi di ng dng tin nhn SMS c chc nng nh sau: C th kim tra trng thi ca thit b trc khi iu khin. T kt qu kim tra trng thi, ngi dng c th dng lnh bng tin nhn iu khin. H thng sau khi nhn tin nhn xut lnh iu khin cc thit b v t ng bo trng thi cc thit b sau iu khin. Nhm thc hin tin hnh kho st Module Sim300CZ, ng dng thi cng mch c th iu khin ng m 2 bng n tng trng cho 2 thit b vi c im sau: iu khin cc thit b trong nh (c th l iu khin mt thit b cng sut trung bnh) bng tin nhn SMS ti v tr c ph sng ca mng in thoi di ng ang hot ng trong nc nh Viettel, Mobile Phone, Vina Phone Chng 1 : Dn nhp

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T ng gi tin nhn ngc tr li cho ngi iu khin, vi ni dung tin nhn cha thng tin hot ng ca thit b (on/off). H thng c bo mt bng password.

Chng 1 : Dn nhp

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CHNG 2:

C S L LUN2.1 Tnh hnh nghin cu trong nc v ngoi nc2.1.1 Ngoi nc Trn th gii hin nay vic iu khin thit b t mng in thoi di ng khng cn mi m na. Xu hng hin nay l tch hp mi tnh nng trn chic in thoi di ng v vic iu khin t xa cng nm trong xu hng . Mi y nht, nh sn xut t Nissan, cng ty in t Sharp v cng ty vin thng NTT DoCoMo ca Nht hp tc nghin cu v cho ra i mt mu in thoi di ng tch hp chc nng iu khin t. Mu in thoi c o ny c Nissan, Sharp v DoCoMo chnh thc gii thiu hm 24/9.

Hnh 2.1 : in thoi tch hp chc nng iu khin tTi sao xu hng th gii li i vo khai thc lnh vc vin thng cho mc ch iu khin t xa ny m khng phi l cch khc? Qua nghin cu cho thy: Ngy 1/7/1991, cuc gi di ng cng ngh GSM u tin trn th gii c thc hin da trn h thng GSM do Ericsson cung cp v c vn hnh bi nh khai thc mng Mannesman ti c. 15 nm sau, chnh xc l ngy 16/6/2006, cng ngh di ng GSM vt qua con s 2 t thu bao. S lng khch hng s dng mng GSM gp i ngi dng Internet trn ton th gii. S ngi s dng mng GSM tip tc tng mnh vi tc 1000 ngi/pht, tng ng vi gn 18 thu bao/giy, 1,3 triu thu bao mi mi ngy. K thut GSM c kh nng truyn tin wireless vi phm vi rt rng ln v m bo tin cy cao. Chnh v vy ngi dng c th gi tin nhn SMS iu khin thit b t xa mang li hiu Chng 2 : C s l lun

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qu cao. Ngi dng ch cn s dng in thoi di ng ca mnh (bt c loi hoc thng hiu) theo di v kim sot nhng ng dng trong cng nghip v nng nghip nh: My mc nh xng. H thng x l nc thi Nng nghip thy li L si, p lnh, my iu ha Cc thit b dn dng khc: n, qut

Hnh 2.2 M hnh iu khin thit b qua SMS2.1.2 Trong nc phm vi trong nc, vn iu khin t xa lun l tm im ca cc khoa hc hin nay. Vi mong mun ng dng khoa hc k thut ca th gii vo i sng, h mun cuc sng tr nn cng ngh hn, hin i hn. Nhng kt qu nghin cu ch ang mc iu khin dng hng ngoi, dng ng dy in cng nghip, dng ng dy in thoi c nh, cn iu khin thit b bng SMS dng Module Sim300CZ th ch ang mc nghin cu, cha a ra sn phm c th. Tuy nhin, ng dng v wireless c ti nghin cu iu khin thit b t xa qua tin nhn SMS bng my tnh ca tc gi Nguyn Trng Kin v Phm Vn Nam, sinh vin trng H S Phm K Thut nm 2008. Trong ti ny, hai tc gi s dng yu t chnh l my tnh giao tip vi in thoi bng dy cp USB Modem iu khin cc thit b in, in t trong nh nh iu khin, gim st v cho hin th c hnh nh thng qua camera v cc tnh nng khc. Tc gi nghin cu v cho i vo cc ng dng nh: tm hiu cc vn v truyn d liu, cc giao thc truyn thng, giao tip, phn mm iu khin. H thng thit k giao din iu khin trn my bng cch giao tip in thoi vi my tnh qua USB Modem. S khi ca h thng:

Chng 2 : C s l lun

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Hnh 2.3 s khi h thng iu khin qua my tnh Vi h thng trn, 2 tc gi khai thc, ng dng s pht trin ca mng di ng vo thc t, m ra nhiu tng trong vic khai thc ng dng ca mng di ng. Nhng qua tm hiu v nghin cu, nhm nhn thy ti c th c pht trin theo cch khc phc nhng thiu st trn ti ny nh: h thng trn ch ng dng cho nhng a im, v tr no c lp t my tnh hay c dng laptop rt cng knh, phc tp; my tnh phi c m sut 24/24 rt hao ph. Tuy nhin, ti ny cng l nn tn cho vic pht trin tng iu khin thit b t xa qua tin nhn SMS. Tm li, vic nghin cu s dng tin nhn SMS iu khin thit b hin nay ti Vit Nam ang cn rt mi m v cha i vo thc tin ng dng nhiu. Hu ht cc nghin cu u l nghin cu t pht ca c nhn nhng ngi hay nhm ngi mun tm hiu v cng ngh ny, vn cha phi l mt hot ng nghin cu mang tnh chuyn nghip c th a vo ng dng. Mc d vy vic nghin cu vn c nhng nhen nhm khi tp on in lc EVN s dng cng ngh nhn tin SMS iu khin my ct thng qua Modem in thoi ca h. Vit Nam khi GSM tr thnh cng ngh m hn 95% dn s chn dng, dch v v SMS cng tng ln rt mnh. iu ny l mt li th cho vic nghin cu v pht trin cc ng dng trong iu khin t ng ha.

Chng 2 : C s l lun

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2.2 tng thit kDng mng in thoi di ng ca cc nh cung cp dch v nh Viettel, Mobiphone, Vinaphone gi tin nhn SMS iu khin cc thit b v c th nhn d liu p ng li t cc thit b cho bit tnh trng hot ng ON/OFF ca cc thit b.

2.3 cng nghin cu chi tit ti ny c thc hin gm 3 phn Phn A: Gii thiu: gii thiu khi qut v ti. Phn B: Ni dung: gm 5 chng. Chng 1: Dn nhp: Gii thiu ti, ngha khoa hc, mc ch nghin cu v gii hn ca ti. Chng 2: C s l lun: Tnh hnh nghin cu trong v ngoi nc, tng thit k, cng nghin cu chi tit, phng php nghin cu, phng tin nghin cu Chng 3: L thuyt lin quan: tng quan v cng ngh GSM, tng qut v SMS, gii thiu Module Sim300CZ, tp lnh AT, gii thiu vi iu khin. Chng 4: Thit k v thi cng: thit k v thi cng phn cng, phn mm. Chng 5: Tng kt v hng pht trin ti Phn C: Ph lc v ti liu tham kho

2.4 Phng php nghin cuTrong ti ny, nhm s dng cc phng php nghin c u: Phng php tham kho ti liu: bng cch thu thp thng tin t sch, tp ch v in t, vin thng, truy c p t mng internet, cc n ca kha trc. Phng php quan st: kho st mt s mch in t mng internet, kho st cc in thoi di ng chn la phng n thit k sau ny. Phng php thc nghim: t nhng tng v kin thc ca nhm, kt hp s hng dn ca gio vin, nhm lp rp th nghim nhiu dng mch khc nhau t chn lc nhng mch in ti u.

2.5 Phng tin nghin cuNhm s dng sch gio khoa, my tnh truy cp mng tm kim thng tin, cc thit b dng thit k v thi cng mch.

Chng 2 : C s l lun

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CHNG 3

L THUYT LIN QUAN3.1 Tng quan v cng ngh GSM3.1.1 Gii thiu v cng ngh GSM GSM (Global System for Mobile communication) l h thng thng tin di ng s ton cu, l cng ngh khng dy thuc th h 2G (second generation) c cu trc mng t bo, cung cp dch v truyn ging ni v chuyn giao d liu cht lng cao vi cc bng tn khc nhau: 400Mhz, 900Mhz, 1800Mhz v 1900Mhz, c tiu chun Vin thng Chu u (ETSI) quy nh. GSM l mt h thng c cu trc m nn hon ton khng ph thuc vo phn cng, ngi ta c th mua thit b t nhiu hng khc nhau. Do n hu nh c mt khp mi ni trn th gii nn khi cc nh cung cp dch v thc hin vic k kt roaming vi nhau nh m thu bao GSM c th d dng s dng my in thoi GSM ca mnh bt c ni u. Mt thun li to ln ca cng ngh GSM l ngoi vic truyn m thanh vi cht lng cao cn cho php thu bao s dng cc cch giao tip khc r tin hn l tin nhn SMS. Ngoi ra to thun li cho cc nh cung c p dch v th cng ngh GSM c xy dng trn c s h thng m nn n d dng kt ni cc thit b khc nhau t cc nh cung cp thit b khc nhau. N cho php nh cung c p dch v a ra tnh nng roaming cho thu bao c a mnh vi cc mng khc trn ton th gii. V cng ngh GSM cng pht trin thm cc tnh nng truyn d liu nh GPRS v sau ny truyn vi tc cao hn s dng EDGE. GSM hin chim 85% th trng di ng vi 2,5 t thu bao ti 218 quc gia v vng lnh th. Cc mng thng tin di ng GSM cho php c th roaming vi nhau do nhng my in thoi di ng GSM ca cc mng GSM khc nhau c th s dng c nhiu ni trn th gii. 3.1.2 c im ca cng ngh GSM Cho php gi v nhn nhng mu tin nhn vn bn bng k t di n 126 k t. Cho php chuyn giao v nhn d liu, FAX gia cc mng GSM vi tc hin hnh ln n 9.600 bps. Tnh ph sng cao: Cng ngh GSM khng ch cho php chuyn giao trong ton mng m cn chuyn giao gia cc mng GSM trn ton cu m khng c mt s thay i, iu chnh no. y l mt tnh nng ni bt nht ca cng ngh GSM(dch v roaming).

Chng 3 : L thuyt lin quan

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S dng cng ngh phn chia theo thi gian TDM (Time division multiplexing ) chia ra 8 knh full rate hay 16 knh haft rate. Cng sut pht ca my in thoi c gii hn ti a l 2 watts i vi bng tn GSM 850/900Mhz v ti a l 1 watts i vi bng tn GSM 1800/1900Mhz. Mng GSM s dng 2 kiu m ho m thanh nn tn hiu m thanh 3,1khz l m ho 6 v 13kbps gi l Full rate (13kbps) v haft rate (6kbps)

-

3.1.3 Cu trc ca mng G SM 3.1.3.1 Cu trc tng qut

Hnh 3.1 : cu trc ca mng GSM H thng GSM c chia thnh nhiu h thng con nh sau: Phn h chuyn mch NSS (Network Switching Subsystem). Phn h trm gc BSS (Base Station Subsystem). Phn h bo dng v khai thc OSS (Operation Subsystem). Trm di ng MS (Mobile Station).

3.1.3.2 Cc thnh phn ca cng ngh mng GSM


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Hnh 3.2 : Cc thnh phn mng GSM 3.1.4 AUC (): Trung tm nhn thc ULR (): B ghi nh v tm tr. HLR (): B ghi nh v thng tr. EIR (): b ghi nhn dng thit b MSC (): Trung tm chuyn mch cc dch v mng. BSC (): B iu khin trm gc BTS (): Trm thu pht gc. NSS (): Phn h chuyn mch BSS (): Phn h trm gc MS (): Trm di ng. OSS (): Phn h khai thc bo dng. PSPDN (): Mng s liu cng cng chuyn mch gi CSPDN (): Mng s liu cng cng chuyn mch knh PSTN (): Mng in thoi chuyn mch cng cng. PLMN (): Mng di ng mt t. ISDN (): Mng s dch v tch hp OMC (): Trung tm khai thc v bo dng. S pht trin ca cng ngh GSM Vit Nam

Cng ngh GSM vo Vit Nam t nm 1993. Hin nay, ba nh cung c p di ng cng ngh GSM ln nht ca Vit Nam l VinaPhone, MobiFone v Viettel Mobile, cng l nhng nh cung cp chim th phn nhiu nht trn th trng vi s lng thu bao mi tng chng mt trong thi gian va qua. Hin nay c n hn 85% ngi dng hin nay ang l khc h hng ca cc nh cung cp dch v theo cng ngh GSM.


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Cho ti thi im ny, th trng thng tin di ng ca Vit Nam c khong 70 triu thu bao di ng. Khi m ba i gia di ng ca Vit Nam l VinaPhone, MobiFone v Viettel u tng trng rt nng vi s lng thu bao mi ngy pht trin c ln ti hng trm ngn thu bao.

3.2 Tng quan v SMS3.2.1 Gii thiu v SMS SMS l t vit tt ca Short Message Service. l mt cng ngh cho php gi v nhn cc tin nhn gia cc in thoi vi nhau. SMS xut hin u tin Chu u vo nm 1992. thi im , n bao gm c cc chun v GSM (Global System for Mobile Communication). Mt thi gian sau , n pht trin sang cng ngh wireless nh CDMA v TDMA. Cc chun GSM v SMS c ngun gc pht trin bi ETSI (European Telecommunication Standards Institute). Ngy nay 3GPP (Third Generation Partnership Project) ang gi vai tr kim sot v s pht trin v duy tr cc chun GSM v SMS. Nh chnh tn y ca SMS l Short Message Service, d liu c th c lu gi bi mt SMS l rt gii hn. Mt SMS c th cha ti a l 140 byte (1120 bit) d liu. V vy, mt SMS c th cha: 160 k t nu m ha k t 7 bit c s dng (ph hp vi m ha cc k t latin nh alphatet ca ting Anh) 70 k t nu nh m ha k t 16 bit Unicode UCS2 c s dng (dng cho cc k t khng phi m latin nh ch Trung Quc) SMS dng text h tr nhiu ngn ng khc nhau. N c th hot ng tt vi nhiu ngn ng m c h tr m Unicode, bao gm Arabic, Trung Quc, Nht Bn, Hn Quc Bn cnh gi tin nhn dng text th tin nhn cn c th mang d liu dng binary. N cho php gi nhc chung, hnh nh cng nhiu tin ch khcti in thoi khc. 3.2.2 Cu trc mt tin nhn SMS Ni dung ca 1 tin nhn SMS khi c gi i chia lm 5 phn nh sau: Instructions to Instructions to Instructions to Instructions to Message Body air interface SMSC handset SIM (optional) Hnh 3.3 : Cu trc ca 1 tin nhn SMS Instructions to air interface: ch th d liu kt ni vi air interface (giao din khng kh). Instructions to SMSC: ch th d liu kt ni vi trung tm tin nhn SMSC. Instructions to handset: ch th d liu kt ni bt tay Instructions to SIM (optional): ch th d liu kt ni, nhn bit SIM.


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3.2.3 u im ca SMS - Tin nhn c th c gi v c ti bt k thi im no - Tin nhn SMS c th c gi ti cc in thoi d chng ang b tt ngun. - t gy phin phc trong khi bn vn c th gi lin lc vi ngi khc. - c s dng trn cc in thoi di ng khc nhau v c th gi cng mng hoc khc mng u c. - Ph hp vi cc ng dng wireless s dng cng vi n nh: chc nng SMS c h tr 100% bi cc in thoi s dng cng ngh GSM; c th gi nhc chung, hnh nh; h tr chi tr cc dch v trc tuyn download nhc chung 3.2.4 Tin nhn SMS chui/tin nhn SMS di khc phc khuyt im mang lng gii hn d liu, mt m rng mi ra i l SMS chui (SMS di). Mt SMS dng text di c th cha nhiu hn 160 k t theo chun dng trong ting Anh. SMS chui c c cu hot ng nh sau: in thoi di ng s chia tin nhn di ra thnh nhiu phn nh v sau gi cc phn nh ny nh tin nhn SMS n. Khi cc tin nhn SMS ny c gi ti ch hon ton th n s c kt hp li vi nhau trn my di ng ca ngi nhn. Kh khn ca SMS chui l n t c h tr nhiu so vi SMS cc thit b c s dng sng wireless. 3.2.5 SMS center/SMSC Mt SMS Center (SMSC) l ni chu trch nhim lun chuyn cc hot ng lin quan ti SMS ca mt mng wireless. Khi mt tin nhn SMS c gi i t mt in thoi di ng th trc tin n s c gi ti mt trung tm SMS. Sau , trung tm SMS ny s chuyn tin nhn ny ti ch (ngi nhn). Mt tin nhn SMS c th phi i qua nhiu hn mt thc th mng (netwok) (chng hn nh SMSC v SMS gateway) trc khi i ti ch thc s ca n. Nhim v duy nht ca mt SMSC l lun chuyn cc tin nhn SMS v iu chnh qu trnh ny cho ng vi chu trnh ca n. Nu nh my in thoi ca ngi nhn khng trng thi nhn (bt ngun) trong lc gi th SMSC s lu tr tin nhn ny. V khi my in thoi ca ngi nhn m ngun th n s gi tin nhn ny ti ngi nhn. Thng th mt SMSC s hat ng mt cch chuyn dng chuyn lu thng SMS ca mt mng wireless. H thng vn hnh mng lun lun qun l SMSC ca ring n v v tr ca chng bn trong h thng mng wireless. Tuy nhin h thng vn hnh mng s s dng mt SMSC th ba c v tr bn ngoi ca h thng mng wireless. Chng 3 : L thuyt lin quan

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Bn phi bit a ch SMSC ca h thng vn hnh mng wireless s dng, tinh chnh chc nng tin nhn SMS trn in thoi ca bn. in hnh mt a ch SMSC l mt s in thoi thng thng hnh thc, khun mu quc t. Mt in thoi nn c mt thc n chn la cu hnh a ch SMSC. Thng thng th a ch c iu chnh li trong th SIM bi h thng mng wireless. iu ny c ngha l bn khng cn phi lm bt c thay i no c. 3.2.6 SMS quc t Cc tin nhn SMS gia cc nh iu hnh c chia ra lm hai hng mc gm tin nhn SMS gia cc nh iu hnh cc b v tin nhn SMS gia cc nh iu hnh quc t vi nhau. Tin nhn SMS gia cc nh iu hnh cc b l tin nhn m c gi gia cc nh iu hnh trog cng mt quc gia cn tin nhn SMS gia cc nh iu hnh quc t l tin nhn SMS c gi gia cc nh iu hnh mng wireless nhng quc gia khc nhau. Thng th chi ph gi mt tin nhn SMS quc t th cao hn so vi gi trong nc. V chi ph gi tin nhn trong ni mng th t hn so vi gi cho mng khc trong cng mt quc gia (k t > v 1 khong trng). (3) Gi ni dung tin nhn v kt thc bng k t c m ASCII 0x1A. (3A) Gi k t ESC (m ASCII l 27) nu khng mun tip tc gi tin nhn na. Khi TE s gi tr v chui OK. (4) Chui tr v thng bo kt qu qu trnh gi tin nhn. Chui tr v c nh dng nh sau: +CMGS: 62 Chng 3 : L thuyt lin quan

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OK Trong 62 l mt s tham chiu cho tin nhn c gi. Sau mi tin nhn c gi i, gi tr ca s tham chiu ny s tng ln 1 n v. S tham chiu ny c gi tr nm trong khong t 0 n 255. Thi gian gi mt tin nhn vo khong 3-4 giy (kim tra vi mng Mobi phone). (4A) Nu tnh trng sng khng cho php thc hin vic gi tin nhn (th bng cch tho antenna), hoc chc nng RF ca modem khng c cho php hot ng (do s dng cc lnh AT+CFUN=0 hoc AT+CFUN=4), hoc s tin nhn trong hng i pha tng i vt qua gii hn cho php, ho c b nh cha tin nhn ca MT nhn c tin nhn b trn, MT s gi thng bo li tr v v c nh dng nh sau: +CMS ERROR: 193 +CMS ERROR: 515 Chc nng truyn nhn tin nhn v chc nng thoi c tch bit. Khi ang thng thoi vn c th truyn nhn c tin nhn. Khi truyn nhn tin nhn vn c th tin hnh thit lp v kt thc cuc gi.

3.4 Gii thiu vi iu khin 89C52Vi iu khin 89C52 l mt vi iu khin dng CMOS c cng sut thp, hiu sut cao vi 8Kbyte b nh Flash. Th b nh flash bn trong chip cho php cc chng trnh c ti lp trnh trong h thng, hoc bng mt lp trnh b nh quy c khng i. Bng vic kt hp linh hot CPU 8-bit vi b nh lp trnh Flash, vi iu khin 89C52 l mt vi iu khin mnh m cung cp kh nng linh hot cao v l gii php hiu qu v kinh t cho rt nhiu ng dng iu khin nhng. Vi iu khin 89C52 cung cp mt s c tnh c bn sau : 8Kbyte b nh Flash, 256 Byte RAM, 32 ng I/O, 2 con tr d liu, 3 b nh thi timer/counter 16-bit, 1 kin trc 6 vector ngt vi 2 mc, 1 port ni tip song cng, 1 b dao ng v mt mch xung clock. Thm vo , vi iu khin 89C52 c thit k vi logic tnh c th hot ng n tn s 0Hz v c h tr 2 ch tit kim nng lng c th la chn c bng phn mm. Ch khng ti (Idle mode) dng CPU trong khi cho php RAM, Timer/Counter, port ni tip v h thng ngt tip tc hot ng. Ch tt ngun (Power-down mode) lu d liu trong RAM nhng ng bng b dao ng, dng hot ng cc chc nng khc ca chip cho n khi c ngt xy ra hoc phn cng c reset.


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Hnh 3.10: S chn 89C52 Port 0 : T chn 32 n chn 39 (P0.0 - P0.7), c 2 chc nng : Trong cc thit k c nh khng dng b nh m rng n c chc nng nh cc ng I/O. i vi cc h thng ln c b nh m rng n va l bus a ch byte thp va l bus d liu truy cp b nh ngoi. Port 1 : T chn 1 n chn 9 (P1.0 - P1.7) Port 3 l port c tc dng kp. Cc chn port ny c nhiu chc nng, va l cng I/O va c cng dng chuyn i c lin h n cc c tnh c bit ca AT89S52 nh bng sau: Bng 3.14 : Chc nng cc chn ca Port 1 Port Pin P1.0 P1.1 P1.5 P1.6 P1.7 Tn T2 T2EX Chc nng chuyn i Ng vo Timer/Counter 2. Ng v b kch ch thu nhn (capture)/np li (reload) v iu khin trc tip ca Timer 2

MOSI S dng cho h thng lp trnh t bn ngoi. MISO S dng cho h thng lp trnh t bn ngoi. SCK S dng cho h thng lp trnh t bn ngoi.


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Port 2 l port c tc dng kp dng nh cc ng I/O hoc l byte cao (A8 - A15) ca bus a ch i vi cc thit b dng b nh m rng. Port 3: T chn 10 n chn 17 (P3.0 - P3.7) Port 3 l port c tc dng kp, cc chn port ny c nhiu chc nng, va l cng I/O va c cng dng chuyn i c lin h n cc t tnh c bit ca AT89S52 nh bng sau: Bng 3.15 : Chc nng cc chn ca Port 3 Port Pin P3.0 P3.1 P3.2 P3.3 P3.4 P3.5 P3.6 P3.7 Tn RxD TxD INT0\ INT1\ T0 T1 WR\ RD\ Chc nng chuyn i Ng vo d liu ni tip. Ng xut d liu ni tip. Ng vo ngt ngoi th 0 Ng vo ngt ngoi th 1 Ng vo ca Timer/Couter 0. Ng vo ca Timer/ Counter 1 Tn hiu ghi d liu ln b nh ngoi. Tn hiu c d liu t b nh ngoi.

- PSEN (Program store enable): Chn 29 PSEN l tn hiu ng ra c tc dng cho php c b nh chng trnh m rng v thng c ni n chn OE\ ca Eprom cho php c cc byte m lnh. - ALE/PROG (Address Latch Enable): Chn 30 Khi AT89S52 truy xut b n bn ngoi,Port 0 c chc nng l bus a ch v d liu do phi tch cc ng d liu v a ch.Tn hiu ra ALE chn th 30 dng lm tn hiu iu khin gi a hp cc ng a ch v d liu khi kt ni vi cc IC cht. - EA/VPP (External Access): Chn 31 Tn hiu vo EA\ chn 31 thng c mt ln mc 1 hoc mc 0.Nu mc 1 th AT89S52 thi hnh chng trnh t Eprom ni trong khon a ch thp 4Kbyte.Nu mc 0 th AT89S52 thi hnh chng trnh t b nh m rng.Chn EA\c ly lm chn cp ngun 21V khi lp trnh Eprom trong AT89S52. Chng 3 : L thuyt lin quan

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Khi ng vo tn hiu ny a ln mc cao t nht 2 chu k my,cc thanh ghi bn trong c np nhng gi tr thich hp khi ng h thng.Khi cp in cho h thnh th mch t ng reset. - XTAL1, XTAL2 : Chn 19, 18 Ng vo b dao ng X1, X2, b giao ng c tch hp bn trong AT89S52. Khi s dng AT89S52, ngi ta ch cn ni thm thch anh v cc t.Tn s thch anh thng l 12Mhz. - VCC, GND : Chn 40, 20 Cp ngun v ni t cho vi iu khin. 3.4.2 T chc b nh trong vi iu khin 89C52 RAM bn trong 89S52 c phn chia nh sau : Cc bank thanh ghi c a ch t 00H n 1FH RAM truy xut tng bit c a ch 20H n 2FH RAM a dng t 30H n 7FH Cc thanh ghi c chc nng c bit t 80H n FFH bao gm : Thanh ghi trng thi chng trnh (PSW: Program Status Word) Thanh ghi B Thanh ghi con tr ngn xp (SP1, SP2: Stack Pointer) Thanh ghi con tr d liu (DPH, DPL) Cc thanh ghi port xut nhp (P0, P1, P2, P3) Cc thanh ghi timer (TCON, TMOD, TMOD, T2CON, T2MOD, TH0, TL0, TH1, TL1, TH2, TL2) Cc thanh ghi port ni tip (SBUF, SCON) Cc thanh ghi ngt (IE, IP) Thanh ghi iu khin cng sut (PCON)


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Hnh 3.11 : B nh ca vi iu khin 89C52

3.4.3 Hot ng truyn d liu ca vi iu khin 89C52 3.4.3.1 Gii thiu Truyn d liu ni tip ca MCS5 c th hot ng nhiu kiu ring bit trong phm vi cho pht ca tn s. D liu dng song song c chuyn thnh ni tip truyn i v nhn v dng ni tip c chuyn thnh song song. Chn TxD (P3.1) l ng xut d liu i v chn RxD (P3.0) l ng nhn d liu v.


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c trng ca truyn d liu ni tip l hot ng song cng c ngha l c th thc hin truyn v nhn d liu cng mt lc. Hai thanh ghi chc nng c bit phc v cho truyn d liu l thanh ghi m SBUF v thanh ghi iu khin SCON. Thanh ghi m SBUF nm a ch 99H c 2 chc nng : nu vi iu khin ghi d liu ln thanh ghi SBUF th d liu s c truyn i, nu h thng khc gi d liu n th s c lu vo thanh ghi m SBUF. S khi ca h thng truyn d liu c trnh by hnh 3.14. TxD (P3.1) SBUF (write only) Baud rate clock (transmit) Baud rate clock (receive) RxD (P3.0) SBUF (write only)

SBUF (write only)

8052 Internal Bus Hnh 3.12 : S h thng truyn d liu

Thanh ghi iu khin truyn d liu SCON nm a ch 98H l thanh ghi cho php truy sut bit bao gm cc bit trng thi v cc bit iu khin. Cc bit iu khin dng thit lp nhiu kiu hot ng truyn d liu khc nhau, cn cc bit trng thi cho bit thi im kt thc khi truyn xong mt k t hoc nhn xong mt k t. Cc bit trng thi c th c kim tra trong chng trnh hoc c th lp trnh sinh ra ngt. Tn s hot ng ca truyn d liu ni tip cn gi tc BAUD (s lng bit d liu c truyn i trong 1 giy) c th hot ng c nh (s dng giao ng trn chip) hoc c th thay i. Khi cn tc Baud thay i th phi s dng Timer 1 hoc Timer 2 to tc Baud.


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Thanh ghi SCON s thit lp cc kiu hot ng truyn d liu khc nhau cho MCS51. Cu trc ca thanh ghi SCON nh sau :

MSB SM0 SM1 SM2 REN TB8 RB8 TI

LSB RI

Hnh 3.13 : Cu trc thanh ghi SCON

Bng 3.16 : Cc bit trong thanh ghi iu khin truyn d liu Bit 7 6 5 4 3 2 1 0 K hiu SM0 SM1 SM2 REN TB8 RB8 TI RI a ch 9FH 9EH 9DH 9CH 9BH 9AH 99H 98H M t hot ng Bit chn kiu truyn ni tip : bit th 0. Bit chn kiu truyn ni tip : bit th 1. Bit cho php truyn kt ni nhiu vi x l mode 2 v 3, RI s khng tch cc nu bit th 9 thu l 0. Bit cho php nhn k t. REN=1 s cho php nhn k t. Dng lu bit 9 truyn i khi hot ng mode 2 v 3. TB8 bng 0 hay 1 l do ngi lp trnh thit lp. Dng l bit 9 nhn v khi hot ng mode 2 v 3 C bo hiu ny ln mc 1 khi truyn xong 1 k t v xa bi ngi lp trnh sn sng truyn k t tip theo. C bo hiu ny ln mc 1 khi nhn xong 1 k t v xa bi ngi lp trnh sn sng nhn k t d liu tip theo.


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Truyn d liu ni tip ca MCS51 c 4 kiu hot ng ty thuc theo 4 trng thi ca 2 bit SM0 v SM1 c lit k bng 3.14 Bng 3.17 : Cc kiu truyn d liu SM0 0 0 1 1 SM1 0 1 0 1 Kiu 0 1 2 3 M t Thanh ghi dch UART 8 bit UART 9 bit UART 9 bit Tc baud C nh (tn s dao ng f/12) Thay i (c t bi Timer) C nh (tn s dao ng f/12 hoc f/64) Thay i (c t bi Timer)

Trong ni dung ti, ngi thc hin ch gii thiu truyn d liu kiu 1 Thu pht bt ng b 8 bit c tc Baud thay i, c s dng trong ti. Trong mode ny, truyn d liu ni tip hot ng bt ng b UART 8 bit c tc Baud thay i c. UART l b thu v pht d liu ni tip vi mi k t d liu lun bt u bng 1 bit Start ( mc 0) v kt thc bng 1 bit stop ( mc 1), bit parity i khi c ghp vo gia bit d liu sau cng v bit stop. Trong kiu ny, 10 bit d liu s pht i chan TxD v nu nhn th s nhn chn RxD. 10 bit bao gm : 1 bit start, 8 bit data (LSB l bit u tin), v 1 bit stop. i vi hot ng nhn d liu th bit stop c a vo bit RB8 trong thanh ghi SCON. Trong MCS51, tc Baud c thit lp bi tc trn ca Timer T1. i vi h 52 c 3 timer th tc baud c th thit lp bi tc trn ca timer T1 ho c timer T2 ho c c 2 timer T1 v T2 : mt timer cho vic pht v 1 timer cho vic thu. Ngun cung cp xung clock ng b cc thanh ghi truyn d liu ni tip hot ng kiu 1, 2, 3 c thit lp bi b m 16 nh hnh 4, ng ra ca b m l xung clock to tc Baud. Xung ng vo ca b m c th lp trnh bng phn mm. Khi c mt lnh ghi d liu ln thanh ghi SBUF th qu trnh truyn d liu bt u nhng n cha truyn m ch cho m khi b chia 16 (cung cp tc Baud cho truyn d liu ni tip) b trn. D liu c xut ra trn chn TxD bt u vi bit start theo sau l 8 bit data v sau cng l bit stop. Cc c pht TI


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cng c nng ln mc 1 cng lc vi thi im xut hin bit stop trn chn TxD. Qu trnh nhn d liu c khi ng ngay khi c s chuyn i t mc 1 sang mc 0 ng vo RxD. B dm 4 bit c reset ngay lp tc sp xp bit d liu ang n t ng vo RxD. Mi bit d liu n c ly mu trng thi m th 8 trong mt chu k 16 trng thi ca b m 4 bit. Khi c s chuyn trng thi t 1 xung 0 ng vo RxD ca b thu th trng thi 0 ny phi tn ti trong 8 trng thi lin tc ca b m 4 bit. Nu trng hp ny khng ng th b thu xem nh b tc ng bi tn hiu nhiu. b thu s reset v tr v trng thi ngh v ch s chuyn trng thi tip theo. Gi s vic kim tra bit start l hp l th bit start s c b qua v 8 bit data c nhn vo thanh ghi dch ni tip. Khi tht c 8 bit c ghi vo thanh ghi dch th 3 cng vic sau s c thc hin tip theo: bit th 9 (bit stop) c dch vo bit RB8 trong SCON. 8 bit data c np vo thanh ghi SBUF. C ngt nhn RI=1.

Tuy nhin 3 cng vic trn ch xy ra nu hai iu kin sau tn ti : RI=0 SM2=1 v bit stop nhn c bng 1 hoc SM2=0.

3.4.4 Tp lnh ca vi iu khin 89C52 Tp lnh ca vi iu khin 89C52 bao gm cc nhm lnh : + Nhm lnh s hc : ADD, SUBB, DIV, MUL, INC, DEC, DA. + Nhm lnh lun l : ANL, ORL, XRL, CLR, CPL, RL, RLC, RR, RRC, SWAP + Nhm lnh dch chuyn d liu : MOV, MOVC, MOVX, PUSH, POP, XCH, XCHD. + Nhm lnh r nhnh chng trnh : ACALL, LCALL, RET, RETI, AJMP, LJMP, SJMP, JMP, JZ, JNZ, JC, JNC, JB, JNB, JBC, CJNE, DJNZ. + Nhm lnh x l bit : ANL, ORL, SETB, CLR, CPL, MOV. 3.4.5 Ngun cung cp Ngun cung cp cho ton b m hnh l 5V, trong n ny ngi thc hin dng ngun cung cp t Adapter t bn ngoi, trn mch ch cn to jack cm kt ni. Chng 3 : L thuyt lin quan

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Cp ngun xung clock cho vi iu khin hot ng, tn s t thch anh thng dng t 12MHz 24MHz. Thng chn tn s t thch anh cung cp l 12MHz, cc t song song l 33pF.

Hnh 3.14 : thch anh


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CHNG 4 :

THIT K V THI CNG4.1 Phng n thit kGm 2 phung n thit k nh sau: Phng n 1: Dng b GSM MODULE SIM300CZ kt ni vi vi iu khin 89C52: chi ph v gi thnh t. Thch hp cho lp trnh lnh AT d dng v y tn nng cho lp trnh vi lnh AT. Ngoi ra cn c th pht trin ng dng su thm vi GPRS, GPS. Phng n 2: Dng in thoi di ng (Ericssion T28, T39 ) c chc nng ging vi GSM MODULE SIM300CZ kt ni vi 89C52. Vic lp trnh cho in thoi di ng cng gn tng t nh GSM MODULE nhng c hn ch hn v mt s loi in thoi ch h tr lnh AT dng Mode PDU nn lp trnh rt phc tp. Ngoi ra phn kt ni gia in thoi di ng vi khi vi iu khin cng rt phc tp. Phng n la chn: Chn phng n 1 v MODULE SIM300CZ h tr lp trnh lnh AT c 2 ch Mode Text v Mode PDU nn vic lp trnh n gin hn nhiu so vi in thoi di ng. Mc d gi thnh kh t nhng v n h tr ch Mode Text nn vic lp trnh n gin hn nhiu so vi dng in thoi di ng v vy nhm quyt nh dng Module Sim300CZ. Ngoi ra cn c th pht trin cc ng dng khc s dng GPRS, GPS.

Chng 4 : Thit k v thi cng

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4.2 S khi

MODULE SIM300CZ

VI IU KHIN

KHI HIN TH LCD

4.2.1 Chc nng tng khi Khi giao tip SMS C chc nng gi nhn tin nhn SMS cho vic iu khin cc thit b. Khi ny cn 1 thit b in thoi di ng v 1 Module Sim300CZ: Thit b in thoi di ng : dnh cho ngi s dng (iu khin). Ngi s dng cn phi ng k dch v vin thng i vi cc nh cung cp dch v trong nc. GSM Module Sim300CZ : Module ny phi c gn Sim ca nh cung cp dch v v cng cn phi c chc nng nh mt in thoi di ng kt ni vi vi iu khin. Ci ny c t c nh v thng xuyn kt ni vi vi iu khin. Khi ngi s dng nhn mt tin SMS c ni dung l mt lnh yu cu iu khin thit b. V d : DV:ADA:ON, DV:ADA:OFF, PT:ADA:ON, .. th Module Sim300CZ s nhn tin nhn v c x l bi cu lnh iu khin c lp trnh v c np vo vi iu khin.


KHI GIAO TIP SMS-

KHI CNG SUT

KHI NGUN

THIT B

Hnh 4.1 : S khi h thng

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Khi x l phn cng l khi trung tm trong vic x l v iu khin phn cng. Khi do mt vi iu khin m nhn v c nhim v gi nhn d liu vi Module Sim300CZ mt cch lin tc. Khi Module Sim300CZ gi thng tin iu khin th Khi x l phn cng s c lp trnh thc thi. Vi iu khin c nhim v giao tip vi Khi cng sut. Khi cng sut Khi ny bao gm 2 BJT C1815 c nhim v khuch i in p kch cho relay. Khi cng sut vi dng thp, p ng ti tiu t cng sut thp v dn dng nh bng n. Khi thit b Cha cc thit b cn iu khin. 4.2.2 Nguyn l hot ng Thu bao gi tin nhn iu khin n Module Sim300CZ theo c php: *# Trong : : 1234 : 99: kim tra thit b 1: m tt c cc thit b 0: tt tt c cc thit b 00 01: tt thit b 1, tt thit b 2 00 11: tt thit b 1, m thit b 2 10 01: m thit b 1, tt thit b 2 10 11: m thit b 1, m thit b 2 Khi nhn c tin nhn mi, module s gi lnh +CMTI: SM, 1 n vi iu khin thng qua chn TXD bo cho vi iu khin bit c tin nhn mi. Vi iu khin nhn c lnh thng qua chn RXD (P3.0) s gi li lnh AT+CMGR=1 qua chn TXD (P3.1) n module c ni dung tin nhn va nhn c. Module nhn c lnh ny qua chn RXD s gi ni dung tin nhn n vi iu khin. Sau khi nhn c ni dung tin nhn, vi iu khin tin hnh x l tin nhn v gi tn hiu iu khin ra chn P2.7 (thit b 1), P2.5 (thit b 2) iu khin. Sau Chng 4 : Thit k v thi cng

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khi iu khin, vi iu khin nhn bit trng thi thit b thng qua chn P2.6 (thit b 1), P2.4 (thit b 2), v iu khin module gi tin nhn bo kt qu iu khin bng lnh: AT+CMSS=, trong : : s ch th kt qu iu khin thit b tng ng vi v tr tin nhn lu trong sim: 3: sai mt khu 4: sai c php 5: thit b 1 m, thit b 2 m 6: thit b 1 tt, thit b 2 m 7: thit b 1 m, thit b 2 tt 8: thit b 1 m, thit b 2 m : s in thoi thu bao gi tin nhn iu khin thit b Cui cng, vi iu khin gi lnh iu khin AT+CMGD=1 cho module xa tin nhn iu khin. Qu trnh trn c lp li khi c tin nhn iu khin mi n.


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4.3 Thit k v thi cng phn cng4.3.1 S nguyn l v tnh ton 4.3.1.1 Module Sim300CZ

Hnh 4.2 : S capture Module Sim300CZ Nguyn l hot ng Module sim300CZ c chc nng nh chic in thoi di ng, n nhn tin nhn thng qua mng GSM, sau lu tin nhn vo Sim ri chuyn xung vi Chng 4 : Thit k v thi cng

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iu khin thng qua chn TXD_GSM. ng thi, Module sim300CZ cng nhn d liu t vi iu khin qua chn RXD_GSM, gi tin nhn tr li n thu bao iu khin thng qua mng GSM. Tnh ton thng s

Hnh 4.3 : S kt ni truyn d liu Mc 1 ca vi iu khin l 5V nhng vi module Sim300CZ hiu mc 1 l 2.8-3v nn chn RXD_GSM dng cu phn p gim p ca tn hiu truyn t vi iu khin sang module

4.3.1.2 Khi giao tip

Hnh 4.4 : S capture khi giao tip Nguyn l hot ng 2 tn hiu t Module sim300CZ RXD_GSM v TXD_GSM i vo R1OUT v T1IN ca Max232 truyn tn hiu sang my tnh bng RS232. S mch c thit k da vo datasheet ca Max232, tuy nhin do khi giao tip truyn d liu do gi tr t c th thay i ph hp.


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Hnh 4.5 : S capture khi ngun Nguyn l hot ng Cho ngun 12 Vdc qua IC n p LM7805 to ra ngun tuyn tnh 5V cp cho vi iu khin, khi giao tip, mch logic, khi hin th LCD. ng thi a ngun 12Vdc qua IC LM2576 to ngun xung 4.3V cho khi Module Sim300CZ Tnh ton thng s Mch c xy dng da trn datasheet ca cc IC ngun. Nhng vi LM2576 dng bin tr 50k chnh mc p ra theo mong mun Vi L=100uH Vo ut =Vref vi Vref=1.23V. Chn R1 = 1K, R2 l bin tr 50K iu chnh mc in p mong mun 4.3V Thit k mch to ngun 5V da vo datasheet ca IC 7805.


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Hnh 4.5 : S capture khi vi iu khin Nguyn l hot ng Khi vi iu khin s dng ngun cung cp 5VDC, lm nhim v nhn cc tin nhn iu khin t chn RXD v TXD x l ni dung tin nhn, sau thc hin lnh iu khin theo tin nhn nhn c iu khin cc thit b thng qua Port 2.5 v Port 2.7, ng thi nhn tn hiu phn hi trng thi thit b bng Port 2.4 v Port 2.6 truyn n thu bao iu khin thng qua Module Sim300CZ. Do mch thc hin truyn d liu ni tip vi Module Sim300CZ nn chn thch anh c gi tr f=11.0592MHz, 2 t 33pF dng n nh dao ng cho thch anh. Dng in tr ko P0 c gi tr 10K theo datasheet. 4.3.1.5 Khi cng sut Cc linh kin dng trong khi cng sut Triac Triac c cu to gn ging nh 2 SCR ni song song ngc chiu c 2 cc G c ni tip vi nhau a ra ngoi mt cc kch duy nht. c tnh ca trac c kh nng dn in vi c hai chiu (+,-) nu c xung kch vo thi im , ti s c cp ngun AC.


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Hnh 4.6 : Triac Tuy nhin c th s dng triac cn phi kch tn hiu xoay chiu vo cc G ca triac, iu ny s gy kh khn cho vic iu khin, bi trong n vic iu khin thit b bng cch kch cc tn hiu dng mc v tn hiu l DC nn khng th kch triac hot ng nh mong mun. Do , nhm thc hin s dng thm mt linh kin c chc nng ging triac nhng c kch bng tn hiu DC m vn p ng c yu cu hot ng ca thit b xoay chiu. l Moc 3020. Moc 3020 Moc 3020 l linh kin c tnh cht v nguyn l hot ng ging vi cc triac thng thng. Tuy nhin, Moc 3020 c cc G c kch bng tn hiu mt chiu. Khi ta kch 1 chiu ln s lm cho led hng ngoi bn trong dn pht n triac bn trong lm cho triac dn, cho php dng xoay chiu i qua n. Moc 3020 c mt s t tnh nh sau : p t trn 2 u led ln nht 1.5v, thng l 1.15v Dng kch cho led 10mA

C th giao tip vi vi iu khin tng thch in p 115V/240V. Tuy nhin, cng sut ca Moc 3020 qu nh khng lm nhim v ng m thit b c cng sut tng i ln nh cc thit b in gia dng. Do trong n, nhm thc hin dng Moc 3020 lm nhim v kch cho mt triac khc c cng sut ln p ng c yu cu ca ti.


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Hnh 4.7 : S capture khi cng sut Nguyn l hot ng Bao gm 2 phn chnh : Phn mch Logic Vi tng thit k, nu i xa c th s dng SMS iu khin thit b in trong nh, nu nh ta c th dng cng tt iu khin bt tt thit b n bng tay. Do , nhm s dng IC 74LS136 vi 2 cng EXOR hai ng vo. Cng EXOR th nht : Mt ng ly tn hiu t vi iu khin , mt ng ly tn hiu t cng tt iu khin bng tay, ng ra cho qua IC 74LS32 cng OR 2 ng vo c ni chung nhm gi mc logic t ng ra ca IC 74LS136 truyn qua chn con MOC3020 kch con BT137. Phn kch Do s dng cng EXOR nn ch hoc vi iu khin xut mc 1 hoc cng tt m th n mi sng. V khi , in p qua con MOC 3020 kch con BT137 dn, ngun 220V i qua cung cp cho n, n sng. Ngc li, nu cng tt ng hoc vi iu khin xut mc 0, con MOC3020 khng dn, khng kch con BT137, ngun 220V khng i qua thit b nn thit b tt. IC cch ly quang MOC3020 l IC nhn dng mt chiu i qua, led sng, dn dng xoay chiu i qua lm chn kch cho con BT137 dn. BT137 c bo v bi mch Snubber bao gm 1 in tr c gi tr chnh xc 39 (s dng in tr 5 vng mu) v 1 t gm 0.1uF. in tr 100 nhm gim p t mc 1 ca 74LS32 qua led ca MOC3020.


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Hnh 4.8 : S capture khi hin th LCD S dng bin tr 10K hn dng v iu chnh cung cp ngun cho LCD v iu chnh tng phn ca LCD. S dng bin tr 5K iu chnh sng ca LED s dng trong m.


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Hnh 4.9: S layout Module Sim300CZ 4.3.2.2 Khi vi iu khin

Hnh 4.10: S layout khi vi iu khin 4.3.2.3 Khi cng sut

Hnh 4.11 : S layout khi cng sut 4.3.2.4 Khi hin th LCD Chng 4 : Thit k v thi cng

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Hnh 4.12 : S layout khi hin th LCD 4.3.3 Mch thc t 4.3.3.1 Module Sim300CZ, khi ngun, khi giao tip

Hnh 4.13 : Mch thc t Module Sim300CZ 4.3.3.2 Khi vi iu khin

Hnh 4.14 : Mch thc t khi vi iu khin 4.3.3.3 Khi cng sut Chng 4 : Thit k v thi cng

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Hnh 4.15 : Mch thc t khi cng sut 4.3.3.4 Khi hin th LCD

Hnh 4.16 : Mch thc t khi hin th LCD


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4.4 Thit k v thi cng phn mm4.4.1 tng chng trnh Chng trnh c thit k vi iu khin nhn tin nhn t module SIM300CZ, sau x l tin nhn v tin hnh iu khin cc thit b. 4.4.2 Lu chng trnh chnhBEGIN

Khi to truyn d liu ni tip UART S Bo c tin nhn mi ? Nhn tin nhn

X l tin nhn v iu khin thit b

Bo co kt qu x l v iu khin

Hnh 4.17 : Lu chng trnh chnh Gii thch lu : u tin, khi va khi ng hoc reset, vi iu khin s tin hnh khi to cc thanh ghi truyn d liu truyn d liu ni tip. Sau vi iu khin s thc hin ch nhn tin bo c tin nhn mi t module SIM300CZ. Nu tin bo gi ti l tin bo c tin nhn mi, vi iu khin s thc hin gi lnh iu khin c tin nhn mi t module. Sau khi nhn tin nhn t module, vi iu khin s tin hnh x l ni dung tin nhn iu khin thit b. Cui cng vi iu khin tin hnh iu khin module gi tin nhn tr li bo kt qu iu khin v kt thc qu trnh iu khin. Sau khi thc hin xong qu trnh, vi iu khin quay li ban u tip tc ch c tin nhn mi. Chng 4 : Thit k v thi cng

n tt nghip 4.4.3 Lu chng trnh x l tin nhnX l tin nhn

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Ly ni dung tin nhn v s in thoi gi S Mt khu ng ? S C php ng ? iu khin thit b Bo sai c php Bo sai mt khu

RET

Hnh 4.18 : Lu chng trnh x l tin nhn x l tin nhn, trc tin vi iu khin thc hin tch ly phn ni dung ca tin nhn v s in thoi gi tin nhn ti. Sau vi iu khin s tin hnh phn tch ni dung lnh iu khin. Trc tin l kim tra mt khu, nu mt khu sai vi iu khin s thc hin gi tin nhn bo sai mt khu cho thu bao gi tin nhn iu khin. Nu mt khu l ng, s kim tra tip c php iu khin, nu c php ng, vi iu khin s tin hnh iu khin thit b, nu khng s thc hin gi tin nhn bo sai c php cho thu bao gi tin nhn iu khin. 4.4.4 Lu chng trnh iu khin thit biu khin thit b S M iu khin ngn ? iu khin m/tt tt c thit b iu khin kim tra ? S iu khin m/tt tng thit b Kim tra thit b

Kim tra thit b

RET

Hnh 4.19 : Lu chng trnh iu khin thit b Chng 4 : Thit k v thi cng

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iu khin thit b, trc tin s phi kim tra lnh iu khin. Lnh iu khin c 2 loi, lnh iu khin ngn v lnh iu khin di. Lnh iu khin ngn l lnh iu khin ch c 1 k t tt hoc m, nu gp lnh ny s thc hin tt hoc m ton b cc thit b. Lnh iu khin di l lnh iu khin thc hin cho tng thit b, khi gp lnh ny ch thc hin iu khin cho 1 thit b xc nh. Vi iu khin s kim tra lnh iu khin l ngn hay di da vo chiu di ca lnh. Nu lnh iu khin l ngn, vi iu khin s tin hnh kim tra lnh l tt, m thc hin iu khin cho ton b thit b. Nu lnh iu khin l di, vi iu khin s kim tra tng cm lnh (cc cm lnh cch nhau bng khong trng), mi cm lnh nu ng s thc hin iu khin thit b tng ng. Cc cm lnh s c kim tra ln lt cho n ht chiu di lnh iu khin. mi cm lnh, vi iu khin s tin hnh kim tra cm lnh thc hin nhim v g v thc hin iu khin thit b theo nhim v . Sau khi thc hin iu khin xong cm lnh ny, vi iu khin thc hin tip cm lnh tip theo cho n khi ht chiu di lnh. Sau khi thc hin xong cc lnh iu khin, vi iu khin s tin hnh kim tra trng thi ca thit b v bo kt qu iu khin. 4.4.5 Lu chng trnh nhn d liuNHANDL

Thit lp b nh lu d liu

S

C d liu n ? Nhn k t S K t kt thc ? RET

Lu k t Tng a ch lu

Hnh 4.20 : Lu chng trnh con nhn d liu Khi c cc d liu t module SIM300CZ gi qua, chng trnh s tin hnh nhn d liu v lu b nh RAM ni ca vi iu khin.


n tt nghip 4.4.6 Lu chng trnh gi d liuGUIDL ang bn gi d liu ? S Gp k t cui ? RET S

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Gi k t Tng ln k t tip theo

Hnh 4.21 : Lu chng trnh con gi d liu Chng trnh s gi cc lnh iu khin cng nh d liu t vi iu khin n module SIM300CZ. 4.4.7 Lu chng trnh ly a chLAYDC

X : a ch u ca d liu c nhn v S K t u s in thoi ? Ly a ch u lu s in thoi K t u d liu ? S Ly a ch u d liu

Tng ln n k t tip theo

Tng ln n k t tip theo S a ch cui d liu ? Ly a ch cui d liu

RET

Hnh 4.22 : Lu chng trnh con ly a ch Khi nhn c ni dung tin nhn t module SIM300CZ. x l iu khin, vi iu khin phi xc nh cc vng d liu c ch cho mc ch iu khin, gm vng d liu cha s in thoi gi tin nhn iu khin v vng nh cha ni dung iu khin. Chng trnh con ly a ch lm nhim v ly cc a ch bt u ca vng nh lu s in thoi, a ch bt u v kt thc ca vng nh lu ni dung iu khin. Chng 4 : Thit k v thi cng

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M chn iu khin thit b (Set) S Thit b m ? RET Tt chn iu khin thit b (Clear)

Hnh 4.23: Lu chng trnh con iu khin m thit bTATTBI

Tt chn iu khin thit b (Clear) S Thit b tt ? RET M chn iu khin thit b (Set)

Hnh 4.24 : Lu chng trnh con tt thit b Hai chng trnh con ny s thc hin m v tt thit b khi c yu cu. 4.4.9 Lu chng trnh kim tra thit bKTRATBI Thit b 1 tt ? S Thit b 2 tt ? S Thit b 1 m, thit b 2 m (KTRATB = 56) RET Thit b 1 m, thit b 2 tt (KTRATB = 55) Thit b 2 tt ? S Thit b 1 tt, thit b 2 m (KTRATB = 54)

Thit b 1 tt, thit b 2 tt (KTRATB = 53)

Hnh 4.25 : Lu chng trnh con kim tra thit b Chng 4 : Thit k v thi cng

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Chng trnh s kim tra trng thi thit b l m hay tt bo cho vi iu khin bit. 4.4.10 Lu chng trnh gi tin nhnGUITN

Gi chui AT+CMSS=

Gi kt qu kim tra thit b (KTRATB)

Gi du ,

Gi s in thoi

Gi k t ENTER

RET

Hnh 4.26: Lu chng trnh con gi tin nhn Chng trnh s gi m lnh AT gi tin nhn n cho module SIM300CZ module thc hin gi tin nhn cho s in thoi gi tin nhn iu khin n. 4.4.11 Khi to cho module SIM300CZ module SIM300CZ c th thc hin tt chc nng nhn v gi tin nhn cng nh giao tip vi vi iu khin, ta cng phi tin hnh cu hnh cho module trc khi s dng. Vic khi to module SIM300CZ c tin hnh nh sau:


n tt nghip Bng 4.1 : Cc bc thit lp cu hnh cho module SIM300CZ TT (1). ATE1 LNH

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GII THCH M ch echo lnh, phc v cho vic hin th Lu ci t Ci t qu trnh truyn nhn tin nhn c thc hin ch text Thit lp bo cho vi iu khin khi module nhn c tin nhn mi, khi c tin nhn mi module s gi chui lnh +CMTI:SM,1 bo cho vi iu khin bit c tin nhn mi Lu ci t

(2). (3).

AT&W AT+CMGF=1

(4).

AT+CNMI=2,1,0,0,0

(5). (6).

AT+CSAS AT+ CMGW=3sai mat khau AT+CMGW=4sai cu phap AT+CMGW=5thiet bi 1 tat, thiet bi 2 tat AT+CMGW=6thiet bi 1 tat, thiet bi 2 mo

(7).

(8).

(9).

Ci t tin nhn tr li bo cc kt qu iu khin

(10). AT+CMGW=7thiet bi 1 mo, thiet bi 2 tat (11). AT+CMGW=8thiet bi 1 mo, thiet bi 2 mo


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CHNG 5 :

KT LUN V HNG PHT TRIN CA TI5.1 Kt qu thc hinSau hn 3 thng thc hin ti, nhm hon thnh vic thit k v thi cng m hnh iu khin thit b t xa bng in thoi di ng dng SMS. H thng c test th v chy rt n nh. V phn cng: gm 4 board Board Module sim300CZ giao tip mng GSM nhn tin nhn iu khin v truyn tin nhn phn hi. Board vi iu khin 89C52 x l tin nhn, xut tn hiu iu khin, nhn bit trng thi ca thit b. Board thit b nhn tn hiu iu khin t vi iu khin bng mc in p kch triac dn ngun 220V qua thit b cng sut nh.

Board hin th LCD hin th cc lnh trong qu trnh lm vic ca vi iu khin. V phn mm: Khi to cc thng s ban u cho Module sim300CZ bng cch kt ni vi my tnh thng qua cng COM. Hon thnh chng trnh cho vi iu khin vi cc tnh nng sau: + H thng c tnh bo mt cao v khi iu khin phi nhp ng password. + H thng iu khin c 2 thit b in dn dng vi cng sut nh nh n, qut + C tin nhn phn hi sau khi thc hin lnh iu khin. + C kh nng kim tra trng thi ca thit b hin ti bng lnh trc khi gi tin nhn iu khin.

5.2 M t h thngH thng bao gm cc khi Module SIM300CZ, vi iu khin, khi cng sut c mc c nh t ti a im cha thit b iu khin. Khi ngi s dng xa khng th trc tip iu khin thit b, ngi s dng c th kim tra trng thi hoc iu khin thit b bng cch gi tin nhn SMS theo c php : *# Chng 5 : Kt lun v hng pht trin ti

n tt nghip Trong : : 1234 : 99: kim tra thit b 1: m tt c cc thit b 0: tt tt c cc thit b 00 01: tt thit b 1, tt thit b 2 00 11: tt thit b 1, m thit b 2 10 01: m thit b 1, tt thit b 2 10 11: m thit b 1, m thit b 2

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Khi nhn c tin nhn mi, Module Sim300CZ s gi lnh +CMTI: SM, 1 n vi iu khin thng qua chn TXD bo cho vi iu khin bit c tin nhn mi. Vi iu khin nhn c lnh thng qua chn RXD (P3.0) s gi li lnh AT+CMGR=1 qua chn TXD (P3.1) n module c ni dung tin nhn va nhn c. Module nhn c lnh ny qua chn RXD s gi ni dung tin nhn n vi iu khin. Sau khi nhn c ni dung tin nhn, vi iu khin tin hnh x l tin nhn v gi tn hiu iu khin ra chn P2.7 (thit b 1), P2.5 (thit b 2) iu khin. Sau khi iu khin, vi iu khin nhn bit trng thi thit b thng qua chn P2.6 (thit b 1), P2.4 (thit b 2), v iu khin module gi tin nhn bo kt qu iu khin bng lnh: AT+CMSS=, trong : : s ch th kt qu iu khin thit b tng ng vi v tr tin nhn lu trong sim: 3: sai mt khu 4: sai c php 5: thit b 1 m, thit b 2 m 6: thit b 1 tt, thit b 2 m 7: thit b 1 m, thit b 2 tt 8: thit b 1 m, thit b 2 m : s in thoi thu bao gi tin nhn iu khin thit b Cui cng, vi iu khin gi lnh iu khin AT+CMGD=1 cho module xa tin nhn iu khin. Qu trnh trn c lp li khi c tin nhn iu khin mi n.

5.3 u im v khuyt im ca h thng u im Chng 5 : Kt lun v hng pht trin ti

n tt nghip -

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S dng mng vin thng GSM trong truyn thng mang tnh cng nghip. H thng hot ng nhng v tr kh khn m ng dy in thoi khng c, ch cn c mng di ng ph sng. H thng c th s dng cc loi sim ca cc nh cung cp khc nhau nh Viettel, Mobile. Phn cng c thit k n gin, s dng s linh kin ti thiu, kt ni chn ra p ng nhu cu pht trin ti sau ny. H thng c th iu khin thit b cng sut ngun 220V. H thng c bo mt bng password. H thng c dng LCD hin th qu trnh lm vic ca vi iu khin nn d dng pht hin sai v sa cha cho phn mm

Nu gn thit b, c th iu khin cng tt c thit k cho tng thit b trong module m khng cn phi gi tin nhn. Khuyt im Ch dng iu khin c 2 thit b cng sut. Password khng thay i c. H thng hot ng vng c ph sng in thoi di ng. H thng c lp trnh ch iu khin thit b dng tin nhn SMS dng text. Phi tn chi ph gi SMS

5.4 Kh nng ng dng thc t ca ti ti p ng c nhng nhu cu ca x hi: C th nhn tin nhn iu khin vi s lng v thi lng khng gii hn. C th iu khin, kim tra trng thi thit b t xa thng qua in thoi di ng ch vi 1 tin nhn SMS

Khi gn thit b, c th iu khin bng tay thng qua cng tt c thit k trong h thng m khng cn nhn tin. Vi nhng c im v tnh nng trn, h thng c th tr thnh sn phm tiu dng, p ng nhu cu x hi. ti mang tnh hin i, thc tin cao v tnh kh thi tt trong thc t.

5.5 Hng pht triny l mt ti kh mi m, nn c nhiu hng pht trin trong tng lai: M rng s thit b cn iu khin. Lp trnh c th thay i password tng tnh bo mt. M rng chc nng cnh bo s c v chng trm cho h thng.

Chng 5 : Kt lun v hng pht trin ti

Phn C PH LC V TI LIU THAM KHO

n tt nghip

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PH LC I :

M NGUN CHNG TRNH;================================ ;GIAO TIEP MODULE SIM 300CZ CO GIAO TIEP LCD ;================================ CHECK DEN HTDEN QUAT HTQUAT NHO DCSODT DCDULIEU KYTU1 KYTU2 DCCUOI KTRATB CONTRO TTGUI TNTLOI KTGUI KTULF BIT BIT BIT BIT BIT EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU 00H P2.7 P2.6 P2.5 P2.4 21H 22H 23H 24H 25H 26H 27H 28H 29H 2AH 2BH 2CH

;================================ ;MAIN PROGRAM ;================================ ORG 0000H CALL KHOITAOLCD MOV A,#080H CALL MADK CALL DELAY100MS MOV MOV MOV SETB SCON, #01010010B TMOD,#00100000B TH1,#-3 TR1

;truyen dl mod 1 ;Toc do truyen 9600 Baud 9600bps

CLR CHECK X0: MOV CONTRO,#07FH CLR RI

Phn 3 : Ph lc v ti liu tham kho

n tt nghip

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MOV A,#01H CALL MADK CALL DELAY100MS MOV A,#080H CALL MADK CALL DELAY100MS MOV KTULF,#2 CALL NHANDL MOV R1,#030H MOV A,@R1 MOV NHO,A CALL HIENTHI L1: INC R1 MOV A,@R1 MOV NHO,A CALL HIENTHI CJNE @R1,#13,L1 CALL DELAY1S MOV DPTR,#CMTI MOV R0,#030H CALL SOSANH JNB CHECK,X0

MOV A,#01H CALL MADK CALL DELAY100MS MOV A,#080H CALL MADK CALL DELAY100MS MOV CONTRO,#07FH MOV DPTR,#CMGR1 MOV TTGUI,#0 CALL GUIDL

MOV KTULF,#5 Phn 3 : Ph lc v ti liu tham kho

n tt nghip CALL NHANDL

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CALL LAYDC

MOV CONTRO,#07FH MOV R1,DCSODT MOV A,@R1 MOV NHO,A CALL HIENTHI D1: INC R1 MOV A,@R1 MOV NHO,A CALL HIENTHI CJNE @R1,#34,D1 CALL DELAY1S MOV A,#01H CALL MADK CALL DELAY100MS MOV A,#080H CALL MADK CALL DELAY100MS MOV CONTRO,#07FH MOV R1,DCDULIEU D3: MOV A,@R1 CJNE A,#13,D2 JMP TIEP MOV NHO,A CALL HIENTHI INC R1 CJNE R1,#123,D3 MOV R1,#128 JMP D3

D2:

TIEP: CALL DELAY1S MOV A,#01H CALL MADK Phn 3 : Ph lc v ti liu tham kho

n tt nghip CALL DELAY100MS MOV A,#080H CALL MADK CALL DELAY100MS MOV R0,DCDULIEU MOV DPTR,#MABAOVE CALL SOSANH ; kiem tra ma bao ve cua tin nhan JNB CHECK,LBT

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MOV DCDULIEU,R0 MOV A,DCCUOI CJNE A,#128,KT KT1: CLR C SUBB A,R0 SUBB A,#5 JMP KT2 KT: JNC KT1 CLR C SUBB A,R0

KT2: CJNE A,#2,DK1 MOV DPTR,#DKTAT CALL SOSANH JNB CHECK,DKA CALL TATDEN CALL TATQUAT JMP X3 DKA: MOV R0,DCDULIEU MOV DPTR,#DKMO CALL SOSANH JNB CHECK,X2 CALL MODEN CALL MOQUAT JMP X3 LBT: JMP X1


n tt nghip DK1: JC DKA

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MOV R0,DCDULIEU MOV DPTR,#DKKIEMTRA CALL SOSANH JNB CHECK,DK2 CALL KTRATBI JMP X3 DK2: MOV R0,DCDULIEU MOV DPTR,#DKMODEN CALL SOSANH JNB CHECK,DK3

CALL MODEN JMP X4 DK3: MOV R0,DCDULIEU MOV DPTR,#DKTATDEN CALL SOSANH JNB CHECK,DK4 CALL TATDEN JMP X4 DK4: MOV R0,DCDULIEU MOV DPTR,#DKMOQUAT CALL SOSANH JNB CHECK,DK5

CALL MOQUAT JMP X4 DK5: MOV R0,DCDULIEU MOV DPTR,#DKTATQUAT CALL SOSANH JNB CHECK,X2 CALL TATQUAT JMP X4 X1: ;BAO SAI MAT KHAU MOV CONTRO,#07FH


n tt nghip MOV TNTLOI,#51 CALL GUITN JMP X5 X2: ;BAO SAI CU PHAP DIEU KHIEN MOV CONTRO,#07FH MOV TNTLOI,#52 CALL GUITN JMP X5 ;BAO KET QUA DIEU KHIEN MOV CONTRO,#07FH CALL KTRATBI MOV TNTLOI,KTRATB CALL GUITN JMP X5 ;KIEM TRA HET MA LENH DIEU KHIEN HAY CHUA? MOV A,DCCUOI MOV DCDULIEU,R0 CLR C SUBB A,R0 CJNE A,#0,DK2 JMP X3 ;MOV CONTRO,#0BFH MOV DPTR,#CMGD1 MOV TTGUI,#0 CALL GUIDL call delay500ms

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X3:

X4:

X5:

JMP X0 ;===================== ; NHAN DU LIEU ;===================== NHANDL: MOV R1,#0 MOV R0,#30H NH0: JNB RI,$ MOV A,SBUF CJNE A,#0AH,NH1 CLR RI INC R1 MOV A,R1

;kiem tra co nhan ky tu Line Feed hay ko?


n tt nghip CJNE A,KTULF,NH0 JMP NH2 NH1: CJNE R0,#123,NH3 MOV R0,#128 NH3: MOV @R0,A INC R0 CLR RI JMP NH0 NH2: CLR RI MOV DCCUOI,R0 CLR P3.6 RET ;======================== ;GUI DU LIEU ;======================== GUIDL: GUI0: JNB TI,$ MOV A,TTGUI MOVC A,@A+DPTR ;gan dl gui vao thanh ghi A INC TTGUI ;tang de gui ky tu ke tiep CJNE A,#92,GUI1 JMP GUI2 GUI1: CLR TI MOV SBUF,A MOV NHO,A CALL HIENTHI JMP GUI0 GUI2: CLR RI CLR P3.5 RET ;======================== ;GUI KY TU ;======================== GUIKT: JNB TI,$ CLR TI MOV SBUF,KTGUI

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;chep dl tu A vao SBUF de gui


n tt nghip MOV A,KTGUI MOV NHO,A CALL HIENTHI CLR RI RET ;======================= ;LAY DIA CHI ;======================= LAYDC: MOV R0,#31H LAY0: CJNE R0,#123,LAY4 MOV R0,#128 LAY4: CJNE @R0,#34,LAY2 INC R0 CJNE @R0,#43,LAY0 DEC R0 MOV DCSODT,R0 INC R0 JMP LAY0 CJNE @R0,#13,LAY1 INC R0 MOV DCDULIEU,R0 INC R0 CJNE R0,#123,LAY5 MOV R0,#128 CJNE @R0,#13,LAY3 MOV DCCUOI,R0 RET ;============================ ;SO SANH ;============================ SOSANH: MOV KYTU2,#0 SS0: MOV A,KYTU2 MOVC A,@A+DPTR CJNE A,#92,SS3 Phn 3 : Ph lc v ti liu tham kho

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LAY1:

LAY2:

LAY3:

LAY5:

n tt nghip JMP SS1 SS3: CJNE R0,#123,SS4 MOV R0,#128 SS4: MOV CJNE INC INC JMP KYTU1,@R0 A,KYTU1,SS2 R0 KYTU2 SS0

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SS1: SETB CHECK SETB P3.7 RET SS2: CLR CHECK CLR P3.7 RET ;========================== ;DIEU KHIEN THIET BI ;========================== MODEN: SETB DEN CALL DELAY1MS JNB HTDEN,MOD1 RET MOD1: CLR DEN RET ;========================== TATDEN: CLR DEN CALL DELAY1MS JB HTDEN,TATD1 RET TATD1: SETB DEN RET ;========================== MOQUAT: SETB QUAT CALL DELAY10MS Phn 3 : Ph lc v ti liu tham kho

n tt nghip JNB HTQUAT,MOQ1 RET MOQ1: CLR QUAT RET ;========================== TATQUAT: CLR QUAT CALL DELAY10MS JB HTQUAT,TATQ1 RET TATQ1: SETB QUAT RET ;========================== ;KIEM TRA THIET BI ;========================== KTRATBI: JNB HTDEN,KTRA1 JMP KTRA3 KTRA1: JB HTQUAT,KTRA2 MOV KTRATB,#53 RET KTRA2: MOV KTRATB,#54 RET KTRA3: JB HTQUAT,KTRA4 MOV KTRATB,#55 RET KTRA4: MOV KTRATB,#56 RET ;========================== ;GUI TIN NHAN TRA LOI ;========================== GUITN: MOV DPTR,#CMSS MOV TTGUI,#0 CALL GUIDL MOV KTGUI,TNTLOI Phn 3 : Ph lc v ti liu tham kho

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n tt nghip CALL GUIKT MOV KTGUI,#44 ;GUI DAU PHAY "," CALL GUIKT MOV R1,DCSODT MOV KTGUI,@R1 CALL GUIKT TN1: INC R1 MOV KTGUI,@R1 CALL GUIKT CJNE @R1,#34,TN1

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MOV KTGUI,#13 ;GUI KY TU ENTER (CARRIAGE RETURN) CALL GUIKT RET ;============================================== CMTI: DB 13,'+CMTI:','\' CMGR1: DB 'AT+CMGR=1',0DH,'\' CMGD1: DB 'AT+CMGD=1',0DH,'\' CMSS: DB 'AT+CMSS=','\' MABAOVE: DB '*1234#','\' DKMO: DB ' 1','\' DKTAT: DB ' 0','\' DKMODEN: DB ' 10','\' DKMOQUAT: DB ' 11','\' DKTATDEN: DB ' 00','\' DKTATQUAT: DB ' 01','\' DKKIEMTRA: DB ' 99','\' COTN: DB 'CO TIN NHAN MOI','\' LAYTN: DB 'NHAN TIN NHAN','\' $INCLUDE (TV_LCD.ASM) $INCLUDE (TV_DELAY.ASM) END


n tt nghip

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PH LC II:

HNG DN S DNG SN PHM Ngun cung cp ton b h thng 220V/50Hz. Ngun cung cp cc module c s dng thng qua cc switch trn board mch. Module Sim300CZ sau khi m ngun nhn nt nhn PWKEY hot ng. Module hot ng bnh thng khi LCD hin th CALL READY 1 ln. Nu hin th CALL READY lin tc l do Module cha nhn sim card, cn tho sim v gn li. Cu trc tin nhn iu khin: *# Mt khu: 1234 Lnh iu khin 99: kim tra thit b 1: m tt c cc thit b 0: tt tt c cc thit b 00 01: tt thit b 1, tt thit b 2 00 11: tt thit b 1, m thit b 2 10 01: m thit b 1, tt thit b 2 10 11: m thit b 1, m thit b 2 Tin nhn bo kt qu c cc trng hp sau: sai mt khu sai c php thit b 1 m, thit b 2 m thit b 1 tt, thit b 2 m thit b 1 m, thit b 2 tt thit b 1 m, thit b 2 m


n tt nghip

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TI LIU THAM KHO[1]. Dng Minh Tr, S chn linh kin, Nh xut bn Khoa Hc K Thut, 1997 [2]. Nguyn nh Ph, Gio trnh vi x l, H S Phm K Thut Tp HCM, 2006 [3]. Phan Hiu Nhn, n mn hc: M phng bn phm in thoi di ng, H S Phm K Thut Tp HCM, 2009 [4]. Nguyn Trung Chnh, Tp lnh At ca Module Sim300CZ dng cho SMS, 2009 [5]. Nguyn Ngc Khnh, Nguyn Hiu Ngha, H thng thu thp v x l d liu cho ngi nh thng minh, H S Phm K Thut Tp HCM, 2004 [6]. SIMCom, AT Commands Set, Hardward Design Module Sim300CZ Cc trang web tham kho : http://4tech.com.vn http://dtvt.org http://www.edaboard.com http://www.datasheet.com http://www.alldatasheet.com http://www.datasheetarchieve.com http://www.vozforum.com http://www.dientuvietnam.com


DATN_Dieu Khien Thiet Bi Tu Xa Bang Dtdd Dung Sms

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