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Dual technology sensor device with range gated sensitivity

  • US 20070176765A1
  • Filed: 01/27/2006
  • Published: 08/02/2007
  • Est. Priority Date: 01/27/2006
  • Status: Active Grant
First Claim
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1. A method of detecting an intruder in a region, with a security device having a microwave sensor and a PIR sensor operatively coupled to a processor, comprising the steps of:

  • a. determining distance information of an object in the region with the microwave sensor, b. processing the distance information to adapt a frequency response of the PIR sensor to provide a frequency adapted PIR signal, and c. determining if the object is an intruder by using the frequency adapted PIR signal.

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