[AVR] how to interface long range RFID with GSM+GPS module using ATMEGA164 microcontroller?

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Narendra1190

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HII!!

I am working on project in which i require the person identification from 1-2 meter and that id need to be sent to web-server through gprs(GSM module)with gps location.I am having good knowledge of Atmel AVR(ATMEGA32) series MCU.But i am facing several issues..Please help me.

1) i couldnt found any RFID reader with 1-2 meter scanning range of Passive RFID tag.(Any other method can i use for identification?)

2)To interface RFID+GPS+GSM module i need more than 2 UART MCU.so i found ATMEGA161. Or any other suggestion will be appriciated.

Thank you.
 

1) Sadly I think you'll never find a RFID system with a 1-2 meter range, the lack of powersource in the tag make them work in small distances only... (I think I have seen one that works at 30cm tops) better if you put your sensor only near the person (via a pole or something) and the rest of your circuit on the wall communicating with the sensor [wiegand? rs485? rs232 is ok up to 10m].

2) yep, it's better if you make each module work with it's own hardware USART... I think you can use an arduino MEGA board that has 4 uart ports (minus 1 used for programming). Remember, even if it's called arduino, at the end of the day it's an Atmega2560 with a stk bootloader...
 
Sadly I think you'll never find a RFID system with a 1-2 meter range
Click to expand...
ISO15693 13.56 MHz RFID has a specified range of 1 to 1.5 m. Long range UHF RFID readers achieve up to 6m (EPC, ISO18000-6).
 

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