Pyroelectric presence identification system

Patent metadata

Field	Value
Publication number	US-2021208004-A1
Application number	US-201715999528-A
Country	US
Kind code	A1
Filing date	Feb 8, 2017
Priority date	Feb 17, 2016
Publication date	Jul 8, 2021
Grant date	—

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.

First claim

What is claimed is:

1 . 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 and second image sensors configured to convert radiant energy into an electrical signal; 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.

2 . The pyroelectric presence identification system set forth in claim 1 , wherein 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.

3 . The pyroelectric presence identification system set forth in claim 2 further comprising:
a mechanical chopper disposed between a scene and the focal plane array.

4 . The pyroelectric presence identification system set forth in claim 1 , wherein the first image sensor is configured to view a first portion of a scene and the plurality of second image sensors are configured to view a second portion of the scene.

5 . The pyroelectric presence identification system set forth in claim 1 , wherein the first image sensor and the plurality of second image sensors are infrared sensors.

6 . The pyroelectric presence identification system set forth in claim 5 , wherein the infrared sensors are passive infrared sensors.

7 . The pyroelectric presence identification system set forth in claim 1 further comprising:
a battery for providing electrical power.

8 . The pyroelectric presence identification system set forth in claim 1 further comprising:
a substrate platform with the focal plane array and the processor integrated onto the substrate platform.

9 . The pyroelectric presence identification system set forth in claim 1 further comprising:
a wireless network configured to communicate with the processor to alter modes of operation.

10 . The pyroelectric presence identification system set forth in claim 9 further comprising:
a battery for providing electrical power to at least the focal plane array.

11 . The pyroelectric presence identification system set forth in claim 2 , wherein the first image sensor is configured to view a first scene and the plurality of second image sensors are configured to view a second scene.

12 . The pyroelectric presence identification system set forth in claim 2 , wherein the first image sensor and the plurality of second image sensors are infrared sensors.

13 . The pyroelectric presence identification system set forth in claim 12 , wherein the infrared sensors are passive infrared sensors.

14 . The pyroelectric presence identification system set forth in claim 2 further comprising:
a battery for providing electrical power.

15 . The pyroelectric presence identification system set forth in claim 2 further comprising:
a substrate platform with the focal plane array and the processor integrated onto the substrate platform.

16 . A method of operating a pyroelectric presence identification system comprising:
monitoring a scene for gross motion by a focal plane array of a detection device operating in a sleep mode; sensing the gross motion by the detection device; detecting at least one presence by the detection device operating in a chopperless-active mode; and identifying the at least one presence by the detection device operating in a chopping mode.

17 . The method set forth in claim 16 , wherein the detection device when operating in the chopping mode is configured to identify the at least one presence.

18 . The method set forth in claim 16 , wherein at least one first image sensor of the focal plane array is utilized and a plurality of second image sensors of the focal plane array are de-energized when operating in the sleep mode.

19 . The method set forth in claim 18 , wherein the plurality of second image sensors are energized when operating in the chopperless-active mode.

20 . The method set forth in claim 19 , wherein the plurality of second image sensors are energized when operating in the chopping mode.

Assignees

• Carrier Corp

Inventors

• Mantese Joseph V
• Finn Alan Matthew
• Soldner Nicholas Charles

Classifications

• G08B13/191 Primary

  using pyroelectric sensor means · CPC title

• G01J5/34 Primary

  using capacitors, e.g. pyroelectric capacitors · CPC title

• H04N23/23

  from thermal infrared radiation · CPC title

• G01J5/0805

  Means for chopping radiation · CPC title

• G01J2005/0077

  Imaging · CPC title