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Temperature-based sensing device for detecting presence of body part

  • US 20030152133A1
  • Filed: 02/05/2003
  • Published: 08/14/2003
  • Est. Priority Date: 02/08/2002
  • Status: Active Grant
First Claim
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1. A device for detecting a presence of a body part relative to an item, the device comprising:

  • a first temperature sensor operable to generate a first electrical signal corresponding to a first temperature of a receiving portion of the item;

    a second temperature sensor operable to generate a second electrical signal corresponding to a second temperature of an ambient environment surrounding the item; and

    a controller adapted to determine the presence of the body part based upon a comparison of the first electrical signal and the second electrical signal.

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