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Wk319 With Arm7

Jun 04, 2018

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    Wine Yard Technologies.com

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    Radio-frequency identification (RFID) is an automatic identificationmethod, relying on storing and remotely retrieving data using devicescalled RFID tags or transponders. RFID (radio frequency identification) is a technology that incorporate the use of electromagnetic or electro static coupling in theradio frequency (RF) portion of the electromagnetic spectrum touniquely identify an object, animal, or person. An alternative to bar code. RFID is also calleddedicated shor t range communication(DSRC) logical Standard Created for Control and Sensor NetworksBased on the IEEE 802.15.4 StandardCreated by the ZigBee Alliance

    RFID--What it is?

    Wine Yard Technologies.com

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    Wine Yard Technologies.com

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    Tag contains an antenna, and a small chip that stores a small amountof dataTag can be programmed at manufacture or on installationTag is powered by the high power electromagnetic field generated by the antennas usually in doorways The field allows the chip/antenna to reflect back an extremely weaksignal containingthedata.CollisionDetectionrecognitionofmultipletagsinthereadrangeisemployedtoseparatelyreadtheindividualtags

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    Battery Powered tagsHave much greater range 100mHold much more information KbytesCan integrate sensing technology

    Temperature, GPSCan signal at defined timeMultiple tags can be recorded at

    onceUsed for higher value itemsShipping containers

    Babies

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    Used where unique identification is needed. Large Retail companies Product Tracking.Hospitals & Nursing Homes Patient Tagging .Airports Baggage Tracking.Security Applications Contactless Smart Cards.RFID Readers could also WRITE onto Tags.RFID Sensors to sense temperature, movement, radiation, foodquality.Passports-UK, Australia, Finland, Ireland.RFID is used in Libraries.Replacing Barcodes.

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    The LPC2141/2/4/6/8 microcontrollers are basedon a 32/16 bit ARM7TDMI-S CPU with real-timeemulation and embedded trace support, thatcombines the microcontroller with embeddedhigh speed flash memory ranging from 32 kB to512 kB. A 128-bit wide memory interface and a uniqueaccelerator architecture enable 32-bit code

    execution at the maximum clock rate. For critical code size applications, thealternative 16-bit Thumb mode reduces code bymore than 30 % with minimal performancepenalty.

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    LPC2148

    Rfidmodule Max232 16X2 LCD

    L293d

    DCGearedmotor

    UART

    Buzzer

    Transistordrivercircuit

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    RFID ModuleMax 232 IC

    BuzzerH-BridgeDC Geared Motor

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    Due to their tiny size and low powerconsumption, LPC2141/2/4/6/8 are ideal forapplications.

    A blend of serial communications interfacesranging from a USB 2.0 Full Speed device,multiple UARTs, SPI, SSP to I2Cs, and on-chipSRAM of 8 kB up to 40 kB, make these devices

    very well suited for communication gatewaysand protocol converters, soft modems, voicerecognition and low end imaging, providingboth large buffer size and high processingpower.

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    16/32-bit ARM7TDMI-S microcontroller ina tiny LQFP64 package.8 to 40 kB of on-chip static RAM and 32

    to 512 kB of on-chip flash programmemory.128 bit wide interface/acceleratorenables high speed 60 MHz operation.One or two (LPC2141/2 vs. LPC2144/6/8)10-bit A/D converters provide a total of6/14 analog inputs, with conversion times

    as low as 2.44 s per channel.

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    The level of the content and its temperature is monitored bythe Microcontroller and displayed on the LCD.

    A 16 X 2 LCD is used which displays 16 characters in twolines.

    LCD Display

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    This project can be used for security purpose whereit gives information about the authorized personsand unauthorized persons.This can be applied in real time systems as such in

    recording the attendance, in the companies,airports for accessing the passports and in industriesto know who are authorized

    . RFID is increasingly used with biometric

    technologies for security. Primarily, the two maincomponents involved in a Radio FrequencyIdentification systems are the Transponder (tagsthat are attached to the object) and theInterrogator (RFID reader ).

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    Communication between the RFIDreader and tags occurs wirelessly andgenerally doesnt require a line of sightbetween the devices.RFID tags are categorized as eitheractive or passive.

    Active RFID tags are powered by aninternal battery and are typicallyread/write, i.e., tag data can be

    rewritten and/or modified.

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    An active tag's memory size variesaccording to application requirements;

    some systems operate with up to 1MB ofmemory.Passive RFID tags operate without aseparate external power source andobtain operating power generated fromthe reader. This project uses passivetags.

    Read-only tags are typically passive andare programmed with a unique set ofdata (usually 32 to 128 bits) that cannotbe modified.

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    The reader has three main functions:energizing, demodulating anddecoding.The antenna emits radio signals toactivate the tag and to read and write

    data to it.In this project, the RFID module readertypically contains a module (transmitter

    and receiver), a control unit and acoupling element (antenna).

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    This module is interfaced with theLPC2148 and when the card is broughtnear to the RFID module it reads thedata in the card and displays on theLCD.If the data in the card is matched withthe data in the program memory then itcompares and displays authorizedmessage.

    If the data is not matched it displaysunauthorized.

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    For authorized message, the door getsopened and the person gets in after

    sometime the door gets closed. If it is anunauthorized person it alerts the personsthrough a buzzer.

    The RFID module indicates a buzzerwhenever it reads the data from the RFIDcard.The significant advantage of all types ofRFID systems is the non contact, non-line-of-sight nature of the technology.

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    The programming of the LPC2148 controller is donein either C language.

    The program is simulated using Keil software.

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    Defense ApplicationsLibraries

    TemplesCollegesSeminar halls and conference rooms

    Security for VIPs during their visit to publicplaces

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    Electronic Vehicle RegistrationAnimal identificationLibrariesMuseumsSki resortsAccess management

    Tracking of goods and RFID in retailTracking of persons and animalsToll collection and contactless paymentTracking sports memorabilia to verify authenticity

    Airport baggage tracking logistics

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    The project RFID based Passport system isdesigned and implemented successfully using

    ARM based LPC2148 controller.

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    Advantages Uses normal CMOS processing

    basic and ubiquitousRelative freedom fromregulatory limitationsWell suited for applications

    requiring reading smallamounts of data at slowspeeds and minimal distancesPenetrates materials well

    (water, tissue, wood, aluminum)

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    http://www.epcglobalinc.com/http://www.rfidjournal.com/

    http://rfidprivacy.com/http://www.rfidinc.com/http://www.buyrfid.com/