Swami schidanand polytecnic collage visnagar LIGHTING LOAD CONTROL USING GSM SYSTEM LIGHTING LOAD CONTROL USING GSM SYSTEM.

Swami schidanand Swami schidanand polytecnic collage polytecnic collage

visnagarvisnagar

LIGHTING LOAD CONTROL USING GSM LIGHTING LOAD CONTROL USING GSM SYSTEMSYSTEM

Lighting load control Lighting load control by mobileby mobile

PRESENT BYPRESENT BY

JAYDEEP PATEL JAYDEEP PATEL

DHAVAL PATELDHAVAL PATEL

GHANSHYAM GHANSHYAM PATELPATEL

Guided By :-Guided By :- MEHUL PAT MEHUL PAT E E HANSABEN PATEL DHIREN HANSABEN PATEL DHIREN PATELPATEL

(PROF EE DEPT)(PROF EE DEPT)

INTRODUCTION:-INTRODUCTION:-

The DTMF based remote monitoring The DTMF based remote monitoring system consists of sensors for sensing the present system consists of sensors for sensing the present parameters of the process or machine. The whole parameters of the process or machine. The whole system can be installed at a distance place from system can be installed at a distance place from where these data can be directly sent to the where these data can be directly sent to the logging system. The data obtained is sent to logging system. The data obtained is sent to doctor’s system by converting it into DTMF doctor’s system by converting it into DTMF signals. The DTMF stands for dual tone multiple signals. The DTMF stands for dual tone multiple frequencies. The idea behind this project is frequencies. The idea behind this project is generation of DTMF signal for sending data.generation of DTMF signal for sending data.

In communication any digit may be In communication any digit may be transmitted in pulse mode or in DTMF mode. transmitted in pulse mode or in DTMF mode. We are generating DTMF tones at transmitter We are generating DTMF tones at transmitter end and decoding these tones at receiving end end and decoding these tones at receiving end which can be used for transmitting the data from which can be used for transmitting the data from one end to another end.one end to another end.

These signals are decoded at the These signals are decoded at the receiving end and original data is recovered form receiving end and original data is recovered form it by the doctors.it by the doctors.

Dual-tone multi-frequency (DTMF) Dual-tone multi-frequency (DTMF) signaling is used for telephone signaling over signaling is used for telephone signaling over the line in the voice-frequency bandto the call the line in the voice-frequency bandto the call switching center. The version of DTMF used switching center. The version of DTMF used

fortelephone tone dialing is known by the fortelephone tone dialing is known by the trademarked term Touch-Tone (canceled trademarked term Touch-Tone (canceled

March 13, 1984), and is standardized by ITU-T March 13, 1984), and is standardized by ITU-T Recommendation Q.23. Other multi-frequency Recommendation Q.23. Other multi-frequency systems are used for signaling internal to the systems are used for signaling internal to the

telephone network.telephone network. As a method of in-band signaling, DTMF As a method of in-band signaling, DTMF

tones were also used by cable television tones were also used by cable television broadcasters to indicate the start and stop broadcasters to indicate the start and stop times of local commercial insertion points times of local commercial insertion points

during station breaks for the benefit of cable during station breaks for the benefit of cable companies. Until better out-of-band signaling companies. Until better out-of-band signaling equipment was developed in the 1990s, fast, equipment was developed in the 1990s, fast,

unacknowledged, and loud DTMF tone unacknowledged, and loud DTMF tone sequences could be heard during the sequences could be heard during the

commercial breaks of cable channels in the commercial breaks of cable channels in the United States and elsewhere United States and elsewhere

BASIC BLOCK:-BASIC BLOCK:-

Microcontroller

Device Control system

Different devices

DTMF Decoder

LCD display

Power supply

CIRCUIT DIAGRAM:-CIRCUIT DIAGRAM:-

COMPONET USED:-COMPONET USED:-

Microcontroller (AT89C51)Microcontroller (AT89C51) DTMF decoder 8870DTMF decoder 8870 Over load relay Over load relay  LCD display LCD display  transformertransformer capacitors capacitors  resister resister  connecting wireconnecting wire

Microcontroller :

Introduction to AT89C51

The AT89C51 is a CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable

read only memory (PEROM). The on-chip

Flash allows the program memory to be reprogrammed in-system or by a ordinary nonvolatile

memory programmer. Atmel AT89C51 is a powerful microcomputer/microcontroller (as they are used

inter-changeably) which provides a highly-flexible and cost-effective solution to embedded control

applications.many

Features of AT89C51

• Compatible with MCS-51™ Products• 4K Bytes of In-System Reprogrammable Flash Memory– Endurance: 1,000 Write/Erase Cycles• Fully Static Operation: 0 Hz to 24 MHz• Three-Level Program Memory Lock• 128 x 8-Bit Internal RAM• 32 Programmable I/O Lines

DTMF decoder 8870

Features• Low Power Consumption• Adjustable Acquisition and Release Times• Central Office Quality and Performance• Power-down and Inhibit Modes (-02 only)• Inexpensive 3.58 MHz Time Base• Single 5 Volt Power Supply• Dial Tone Suppression

Applications

• Telephone switch equipment• Remote data entry• Paging systems• Personal computers

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Over load relay 

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A Relay Is An Electrically Operated Switch

Many Relays Use An Electromagnet To Operate A Switching Mechanically. Relay Are Used where Necessary To Control A Circuit By A Low Power Signal. Many Types Of Relay:

1) SPST 2) SPDT 3) DPST 4) DPDT 5) Contactor Relay 6) Solid State Relay 7) Buchholz Relay 8) Over Load Protection Relay

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LCD display 

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transformer 

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A Transformer is device there electrical energy form one circuit to anotherA Transformer Basic Principal is Two1). Electromagntisim2). Electomagnetic induction

A Transformer many Type of losses

1).Hysteresis losses2).Eddy Currents3).MagnetoStriction4).Mechanical losses5).Stray losses

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capacitors 

A Capecitor Is A Passive Two Terminal Electrical Component.

A Capecitor Used to

1)Energy Storage an Electric Field. 2)power Factor Correction.

The Forms Of Practical Capacitors vary Widely.

resister 

A Resistor Limit Current In a typical Application.

The Resistive Coating Is Spiralled Away In An Automatic Machine Until The Resistance Between The Two Ends Of The Road Is As Possible To The Correct Value.

A Thin Film Carbon Is Deposited On To a Small Ceramic Rod.Metal leads And End Caps Are Added.

The Resistor Is Covered With An Insulating Coating And Finally Painted With Coloured Bands To Indicate The Resistor Value.

WORKING PRINCIPLEWORKING PRINCIPLE

Here microcontroller is the heart of this Here microcontroller is the heart of this project ,Firstly the power supply of 5v DC is very project ,Firstly the power supply of 5v DC is very essential for this set up, this power supply trigger the essential for this set up, this power supply trigger the microcontroller 8051,then 8051 is directly connected microcontroller 8051,then 8051 is directly connected with LCD & device control, LCD gives the info with LCD & device control, LCD gives the info regarding devices that can be operated by regarding devices that can be operated by microcontroller 8051 & device control here acting as microcontroller 8051 & device control here acting as a switch with the help of relays .a switch with the help of relays .

DTMF encoder sends the information in the form of DTMF encoder sends the information in the form of frequency from the 2Gfrequency from the 2G

hand set ,Then DTMF decoder decode the hand set ,Then DTMF decoder decode the information in the form of frequency and this information in the form of frequency and this information fed to microcontroller pins.Finally information fed to microcontroller pins.Finally microcontroller performs the relative operations.microcontroller performs the relative operations.

ADVANTAGESADVANTAGES Here we are using 2G technology,2G Here we are using 2G technology,2G

provides video calling, video provides video calling, video streaming ,video conferencing and other streaming ,video conferencing and other tremendous advantages.tremendous advantages.

with the help of video streaming we can with the help of video streaming we can see the project setup as well & operates see the project setup as well & operates the same.the same.

Security is another important parameter Security is another important parameter that is fully protected by that is fully protected by microcontroller.microcontroller.