Patent ID: 7362224

Claim:
A thermally sensitive array of passive infrared sensors for detecting an object around a moveable automatic door, comprising: each of said passive infrared sensors is a thermopile; each of said thermopiles located around said moveable automatic door; said moveable automatic door is adapted to open and close depending on the detection of said object around said moveable automatic door; each of said thermopiles includes at least two thermocouple devices; each of said thermocouple devices includes: a thermocouple having first and second contacts; an isolation layer; said thermocouple engaging said isolation layer; a substrate; said isolation layer engaging said substrate; a first source element and a second source element; an absorptive cover in engagement with said first source element; said first source element and said second source element are thermally coupled to said respective first and second contacts of said thermocouple; and, voltage measuring circuitry affixed to said contacts of said thermocouple.