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NFC and Bar code for station ID

Ram Tal
Intellectual 500 points
Other Parts Discussed in Thread: CC3200, TRF7970A

Hi,

First of all, I'm new to NFC..

Second, I would like to test the feasibility of the following, please advise-

The general application works inside industrial environment at 2.4GHz using CC3200- when a controller is control number of base stations (controller and base station with CC3200).

Each base station must get its station ID (1,2,3 etc..). sometimes it will be needed to change a base station and a station ID will must be inserted to a new base station (e.g. base station No. 4 is not working, so it is replaced by a new base station which must get ID No. 4).

My question is- could this be done using TRF7970A Reader (for example) inside the base station and proximate bar code patch on a near by pole (approx. 5 cm)?The ID will be already "stamped" on the bar code, the new base station will be installed and powered and the NFC reader will read the ID and send it via SPI to the CC3200 MCU- is it possible?

THANKS! 

Ram

  • 0
    TI__Mastermind 38620 points

    Hi Ram,

    Yes, this is possible.  We actually have recently released a reference design which uses the CC3200 and TRF7970A where it reads tags and then passes the data to CC3200 to be transmitted via WiFi.  Have a look at it below.

    http://www.ti.com/tool/CC3200_NFC_CARD_READER

  • 0 in reply to Eddie LaCost
    Intellectual 500 points

    Thanks.

    So, the TRF7970A Reader which will be located inside the station will read the barcode and will send the data to the CC3200 MCU.

    If, as in this case, the barcode tags (stickers) will only coded with ID. how do I get/produce such tags? (sorry for this question, as I said, I'm newby to this RFID/NFC) 

  • 0 in reply to Ram Tal
    TI__Guru*** 128255 points

    Hi Ram,

    A couple options that I know of from the top of my head are:

    • If you don't need to customize the tag ID's using something like an ISO15693 could work where the tags are manufactured with a Unique Identifier (UID) that is programmed and then locked at production. TI has tags like this with our Tag-It HF-I Transponder family.
    • If you need to personalize these tags with your own information and custom ID, you would need to buy tags and then have a process to program these tags internally where you program the required data onto the tags via RF, verify their contents, and then distribute them.
      • For this you can either use tags which have the ability to have locked blocks (which can never be unlocked) such as certain ISO15693 tags, or tags which use some sort of Encryption method (such as SHA or AES) which include ISO14443A tags.
      • Encrypted tags would also keep whatever ID data from being in the clear so your ID tags could not be cloned.