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  • Replies 11 replies
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Related

Sensing Skin is present

hasher
hasher over 7 years ago

Hi guys

 

I am working on a project that  involves detection of skin (and hair). The sensor should be in such a way that it should differentiate human skin from other objects like wood,dirt . Is there a commercial sensor on the market that does this ?

 

 

Thanks Paul

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  • mcb1
    mcb1 over 7 years ago in reply to hasher +4
    You should be able to combine with detecting a change in the relative chest position. Either tilt switch or accelerometer to detect both the accelration vertically and then the change in it's position…
  • hasher
    hasher over 7 years ago in reply to Fred27 +3
    Well I want to know when two animals push against each other to trigger a data point. So the sensor is mounted on the animals chest and I want to know when they mate. Obviously there is a lot hair in the…
  • Fred27
    Fred27 over 7 years ago in reply to hasher +3
    I think that would work, although there is still the chance of false positives. There are plenty of microcontrollers that do capacitive sensing - you won't even need something as powerful as a SBC. I'm…
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  • littleben1
    littleben1 over 7 years ago

    Maybe there would be a way to have the males positively charged and the females negatively charged or grounded (very very small amounts of charge) so that there would be a drop in charge on the male when it comes in contact with a female, still would be a type of capacitive sensing but might be what you would be looking for. the biggest problem with all of this is any time that the animals are standing in mud that is deep enough to ground there is going to be false positives. other than that maybe some sort of individual gps tags that would show when two of the animals were within close contact of each other, in that case you could have individual identifiers for each tag so you would know the males and the females and then only have it activate to give a reading when the two had been together for more than just a split second to help weed out false positives. or find some way to run small magnets and hall effect sensors to an area on each animal that would be close together while the mating was in progress. just some ideas but I hope they help, I also come from a farming area (my father has a couple of farms) so I completely understood what you were getting after. anyways hope it helps

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  • Fred27
    Fred27 over 7 years ago in reply to littleben1

    littleben1  wrote:

    Maybe there would be a way to have the males positively charged and the females negatively charged

    No too much charge though. I'm sure neither of them would appreciate a spark. It bad enough on your finger after walking over a synthetic carpet. image

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  • Fred27
    Fred27 over 7 years ago in reply to littleben1

    littleben1  wrote:

    Maybe there would be a way to have the males positively charged and the females negatively charged

    No too much charge though. I'm sure neither of them would appreciate a spark. It bad enough on your finger after walking over a synthetic carpet. image

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  • littleben1
    littleben1 over 7 years ago in reply to Fred27

    yeah that's kind of what was going through my head too, so was thinking a very, very small charge

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