Pyroelectric presence identification system
AssigneeCarrier Corporation
InventorsJoseph V. Mantese, Alan Matthew Finn, Nicholas Charles Soldner
Life of this patent
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Abstract
A pyroelectric presence identification system includes focal plane array and a processor coupled to the focal plane array. The focal plane array includes a first image sensor and a plurality of second image sensors configured to convert radiant energy into an electrical signal. The processor is configured to control the focal plane array in a sleep mode wherein the first image sensor is utilized to detect gross motion of at least one presence and the plurality of second image sensors are de-energized.
Claims18
A pyroelectric presence identification system comprising:
- a focal plane array including a first image sensor and a plurality of second image sensors, with the first image sensor and the plurality of second image sensors configured to convert radiant energy into an electrical signal;
- a mechanical chopper disposed between a scene and the focal plane array;
- and
- a processor coupled to the focal plane array and configured to control the focal plane array in a sleep mode wherein the first image sensor is utilized to detect gross motion of at least one presence and the plurality of second image sensors are de-energized, wherein once gross motion is detected, the presence identification system is configured to operate in a chopperless-active mode wherein at least the plurality of second image sensors are energized for detection and counting of the at least one presence, and a chopping mode wherein at least the plurality of second image sensors are energized for identification of the at least one presence.
A method of operating a pyroelectric presence identification system comprising:
- monitoring a scene for gross motion by a first image sensor of a focal plane array of a detection device operating in a sleep mode;
- sensing the gross motion by the first image sensor of the detection device;
- detecting at least one presence by a plurality of second image sensors of the detection device operating in a chopperless-active mode;
- and
- identifying the at least one presence by the plurality of second image sensors of the detection device operating in a chopping mode.
Dependencies are inferred from the claim text.