Read RFID Tags from cows

Hi all,

I'm running a farm and we have 120 cows who are having these collars :

Now i could get my hand on a used concentrate feeder , but it needs to be rebuild so it can work with these tags.

My knowlegde of arduino and programming is not the problem, but the knowledge of RFID isn't that great. Therefor i come to this forum to get some more information.

I found out that i can read the tags with a simple NFC Scanner on my iPhone, but ofcourse only when i hold the
phone close to the tag. I've learned that NFC works with 13.56Mhz (HF RFID) , does that mean i could be able to get a circuit board and a long range antenna to get this working? Reading distance should be able to get up to 1m.

I've also learned that most RFID cow tags work with the ISO 11784 or 11785 standard, but the NFC app that i run on my phone says it's ISO 15693 . Anyhow, i'm perfectly able to read the tags with this phone, i hope there is a way to read them from a distance of 1m.

Anyone has any idea where to start?

thanks allot !

The RFID readers that usually come up here are very short range, a few inches at most. You can do better with different antenna design. Really long range stuff is possible (fifty feet or more), but expensive (although perhaps not in farming terms).

What kind of distance do you need?

If the collar has a battery then antennas help in extending the operating range. Otherwise the power transmission from the reader to the tag works only for very narrow distance.

Does the vendor of those tags claim a 1 meter detection range?

If so, the obvious thing is to buy the reader from the same place you bought the tags?

If you are trying to do things on the cheap then I suspect that a hobby grade reader isn’t going to be a match for any of the expensive looking long range readers that you can find on the web.

Hi All,

yes, the tag is battery powered, in that way that when the battery dies, the readout stops.

And i already have readers hanging in the milking robots , but 1) you do not want to know what
they sell it for and 2) i can't interface with them since they are programmed in their can-bus networkand there is no documentation.
The working range in the robot is approx. 1m too.

All i need is an affordable solution to read it out, i'm not saying cheap aliexpress stuff, but i don't want
to spend 1000€ on an antenna and a circuit board for this project.

Also consider that only 1 cow must be in the range of the reader, else you get a signal mix from several tags. So at least the reader antenna should be very directive, so that you can point it to the cow of interest.

bartdereu:
And i already have readers hanging in the milking robots

Then you already know the answer. :sunglasses:

Paul__B:
Then you already know the answer. :sunglasses:

Not really , if you read my previous post :wink:

DrDiettrich:
Also consider that only 1 cow must be in the range of the reader, else you get a signal mix from several tags. So at least the reader antenna should be very directive, so that you can point it to the cow of interest.

That is not really an issue in the setup i'm going to work.

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