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Internet of Things
Forum Internet of Things Sensors
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Forum Thread Details
  • State Suggested Answer
  • Replies 12 replies
  • Answers 2 answers
  • Subscribers 511 subscribers
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  • cats
  • sensor
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Internet of Things Sensors

brianchadorourke
brianchadorourke over 10 years ago

Hi.  I'm trying to attach sensors to my cats.  They don't appreciate it as much as I do.  What have y'all done to attach sensors to your pets? 

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  • mcb1
    mcb1 over 10 years ago in reply to Robert Peter Oakes +2
    I've done a bit of work on this. The bigger coil isn't the answer, its improving the Q of the coil which gives the 'gain' you need. Frederick has done a 'cat detector' in his Forget Me Not challenge fvan…
  • mcb1
    mcb1 over 10 years ago in reply to Robert Peter Oakes +2 suggested
    Peter The tags use a similar data format, but they are 134KHz rather than 125KHz. Obviously the antenna in the implanted chip is smaller, so therefore its affect on the reader is less, hence why you need…
  • mcb1
    mcb1 over 10 years ago in reply to gadget.iom +2
    gadget.iom I was asked to look at making an RFID door using one of these. (keeping with the NZ manufacturer) http://www.transcat.co.nz/products.html It came about through my articles in The Shed magazine…
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  • dougw
    0 dougw over 10 years ago

    I have used the Ti system (134 KHz) with good success. I used antenna coils of various sizes up to about 12 inches to increase range, usually printed on a large PCB, but wire coils worked fine too. They definitely need to be tuned to the correct frequency. These could read a standard tag out to about 8 inches from the antenna, so the pet wouldn't need to go through the antenna - it just would need to be within 8 inches. Incidentally, there are online calculators that will calculate inductance versus geometry of printed coils.

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  • dougw
    0 dougw over 10 years ago

    I have used the Ti system (134 KHz) with good success. I used antenna coils of various sizes up to about 12 inches to increase range, usually printed on a large PCB, but wire coils worked fine too. They definitely need to be tuned to the correct frequency. These could read a standard tag out to about 8 inches from the antenna, so the pet wouldn't need to go through the antenna - it just would need to be within 8 inches. Incidentally, there are online calculators that will calculate inductance versus geometry of printed coils.

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