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How can the sensors communicate with RFID tags?

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RFID Design question

I am working on a design project at undergraduate level. Data from temperature and power consumption sensor should be send to a monitoring station at 1Hz rate. RFID technology should be used. So far, we decided to use 900MHz range and ordered a RFID development kit. However, things are not going well and we are behind the schedule. My questions are:
How can the sensors communicate with RFID tags? The idea is to use an active tag which memory is updated constantly. Should a microcontroller be used instead? (not really feasible to use one microcontroller for each tag).
Also we would like to store the information received by reader to a database.
Suggestions, readings? Thanks a lot!
 

RFID Design question

there is atmel's rfid chip with spi interface to memory . your mcu should simulate spi eeprom and that is how you will survive. Philips introduce d new rfid chips even with usb uinterface , but that goes to smart card product line . mucrochip had such chips but those are out of production . If you going to put mcu - use mcu as rfid transponder , but the only band you can afford with low capabilities mcu - is LF 125 KHz . Search forum there should be one guy who uploaded 125 KHz rfid mobilizer built on diuscretes .
 

    U

    UFA

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Re: RFID Design question

You can find smart sensors which is both a sensor and RFID tag.
Also you can design an interface for writing sensors data to RFID tag. You should use RFID reader.
 

Re: RFID Design question

Smart said:
You can find smart sensors which is both a sensor and RFID tag.
Also you can design an interface for writing sensors data to RFID tag. You should use RFID reader.
Click to expand...

component name please.
 

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