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RFID Based Security System (AT89S52 + RFID)

Discussion in 'Doubts in My Projects' started by Binu, Jun 2, 2007.

  1. Binu

    Binu Administrator

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    This project aimed to develop a wireless system to detect and allow only the authorized persons. The system was based on Radio Frequency Identification (RFID) technology and consists of a passive RFID tag. The passive micro transponder tag collects power from the 125 KHz magnetic field generated by the base station, gathers information about the Tag ID and sends this information to the base station. The base station receives, decodes and checks the information available in its Database and Manchester code was used to send those information. The system performed as desired with a 10cm diameter antenna attached to the transponder. The Base Station is built by using the Popular 8051 family Microcontroller. It gets the tag ID and if the tag ID is stored in its memory then the microcontroller will allow the person inside.
    RFID Reader Module, are also called as interrogators. They convert radio waves returned from the RFID tag into a form that can be passed on to Controllers, which can make use of it. RFID tags and readers have to be tuned to the same frequency in order to communicate. RFID systems use many different frequencies, but the most common and widely used Reader frequency is 125 KHz.
    Program: View attachment security.zip
  2. SUPERMAN_MILLENIUM2000

    SUPERMAN_MILLENIUM2000 New Member

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    please can u tell me about this circuit is it a complete working circuit with no errors in the schematic provided by u,please i need ur help seriously as i m interested in doing this project and want to select this as my final year project
  3. Binu

    Binu Administrator

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  4. Rajan_pec

    Rajan_pec New Member

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    I m working on project which measures the speed of the vehicle.cud u plz help me by providing me a suitable hardware circuit for the speed detection circuit using IR sensors asap.
  5. Binu

    Binu Administrator

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  6. seena

    seena New Member

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    There are four errors in the file i downloaded for RFID based Security System..Plz can you solve them for me.. out of 4 two are syntax Errors and ive corrected that.. plz give a solution for me..

    sinu!
  7. Binu

    Binu Administrator

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    All the source codes published here are free from errors. please post the error messages you obtained.
  8. seena

    seena New Member

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    Sir, these are my errors.. Plz try to solve them for me.. I used Keil MicroVision3 for Assembly...

    assembling RFID.a51...
    C:\Documents and Settings\KVSR\Desktop\RFID.a51(1): error A9: SYNTAX ERROR
    C:\Documents and Settings\KVSR\Desktop\RFID.a51(95): error A10: ATTEMPT TO DEFINE AN ALREADY DEFINED SYMBOL
    C:\Documents and Settings\KVSR\Desktop\RFID.a51(100): error A50: BIT-ADDRESS EXPECTED
    C:\Documents and Settings\KVSR\Desktop\RFID.a51(782): error A15: MISSING FACTOR
    C:\Documents and Settings\KVSR\Desktop\RFID.a51(789): error A15: MISSING FACTOR
    C:\Documents and Settings\KVSR\Desktop\RFID.a51(2448): error A51: TARGET OUT OF RANGE
    C:\Documents and Settings\KVSR\Desktop\RFID.a51 - 6 Error(s), 0 Warning(s).

    sinu!
  9. Binu

    Binu Administrator

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  10. shrinidhirao

    shrinidhirao New Member

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    Dear Binu sir,

    I am doing this RFID proximity security system as my final year project.
    Can u guide me please?
    I'm not able to understand the second circiut (security1.gif). Can u explain the RFID READER and COIL circuit
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