PIR motion sensor system

A motion sensor, sensor technology, used in instruments, alarms, burglar alarms, etc.

Active Publication Date: 2012-05-23
SUREN SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processor adds together the first and second signals to create a sum signal and subtracts the first signal from the second signal to create a difference signal

Method used

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  • PIR motion sensor system
  • PIR motion sensor system
  • PIR motion sensor system

Examples

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Embodiment Construction

[0027] Certain embodiments disclosed herein provide a motion sensing system that includes a passive infrared sensor system having a plurality of detector elements and a processor that processes signals from the detector elements and determines if predetermined detection criteria are met. Indicates motion detection.

[0028] After reading this description, it will become apparent to a person skilled in the art how to implement the invention in various alternative embodiments and alternative applications. However, while various embodiments of the invention will be described herein, it is to be understood that these embodiments are presented by way of example only, and not limitation. Likewise, this detailed description of various alternative embodiments should not be construed to limit the scope or breadth of the present invention as set forth in the appended claims.

[0029] initial reference figure 1 , shows a sensor system generally indicated at 10 for detecting a moving ob...

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PUM

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Abstract

A passive infrared sensor has two or more detector element arrays, each consisting of positive polarity and negative polarity elements. The signals from the arrays are both summed together and subtracted from each other, and if either the sum or difference signal exceeds a threshold, detection is indicated.

Description

technical field [0001] The present invention relates generally to motion sensors and systems incorporating such sensors, and in particular to PIR motion sensor systems. Background technique [0002] U.S. Patent Nos. 7,183,912, 7,399,970, 7,399,969, and 7,755,052 disclose simple PIR motion sensors with low false alarm rates and minimal processing requirements that are capable of distinguishing small moving targets such as animals from larger Activate the alarm in the event of an unauthorized human but not a pet. [0003] Particularly with regard to ceiling-mounted sensors, due to the use of positive and negative detector elements, it is possible that the signal from the object to be monitored cancels out along certain bearer lines. In other words, ceiling-mounted detectors inherently have longer detection ranges along certain load-bearing lines and shorter detection ranges along other load-bearing lines. As understood herein, it is desirable to provide a single ceiling-moun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/02G08B13/19G08B21/22
CPCG08B13/191G08B29/188
Inventor E.S.米科
Owner SUREN SYST
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