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DiscussionsRFID StandardsJust to make myself clear...

Just to make myself clear...

By J. Riisom 2009-03-13 09:16:17 AM

What I want to know is if the ISO 15693 standard should solve all collisions between two tags, no matter how equal the two tags UIDs are.
If the answer to this question is yes, then there is a bug in my readers firmware.

The difference between tag 1:s and tag 2:s UIDs are just one bit (not a nibble as a wrote earlier).

I would be very grateful for any reply!!!

BR,
Jörgen


> Hello
>
> I'm using a RFID reader from Texas Instruments whichs
> supports the ISO15693 standard.
> When reading tags I sometimes get collisions that arn't
> solved by the reader (i.e. I never get to see the UIDs of
> the coliding tags). Arn't the reader supposed to solve all
> the collisions? I'm only reading two tags at the time.
> I get the problem when the two tags reply in the same
> slot.
>
> I get the problem when trying to read the following tags:
> UID of tag 1: 3B3098529C2102E0
> UID of tag 2: 7B3098529C2102E0
> Are these UIDs too simular? There is just one nibble that
> is changed between them.
>
> Is there an error in my reader firmware?
>
> The tags I'm using are LRI2K from ST Microelectronics. They
> support anticollision according to their data sheet.
>
> I hope that someone has answers to my questions!
>
> Best regards,
> Jörgen

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Thread Messages

TOPIC DATE
Can ISO15693 anticollision always solve a collision?
By J. Riisom
03.12.2009
Just to make myself clear...
By J. Riisom
03.13.2009
Anticollision
03.16.2009
High data rate is the answer!
By J. Riisom
03.16.2009

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