Infrared motion sensing system

A motion sensing and infrared technology, applied in the field of sensors, can solve the problems of false triggering by pets, and achieve the effects of reducing false alarm rate, good filtering effect, saving cost and power consumption

Inactive Publication Date: 2018-01-26
SUZHOU RIPPLEINFO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the PIR sensor is sensitive to infrared radiation sources, and the basic signal conditioning circuit only does a certain processing of the voltage, it is particularly easy to be falsely triggered by pets.

Method used

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Embodiment Construction

[0022] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0023] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0024] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The disclosure relates to an infrared motion sensing system. The system comprises an optical assembly, a pyroelectric infrared PIR sensor, a signal processing unit, a determination unit and an alarm unit, the optical assembly comprises a Fresnel lens, the sensible space range of the PIR sensor is limited through the installation height and angle of the Fresnel lens, the infrared energy of a motionobject passing through the sensible space range is concentrated on the PIR sensor, the PIR sensor is used for receiving the infrared energy from the optical assembly to generate a first signal, the signal processing unit is used for performing filtering amplification on the first signal to obtain a second signal, the determination unit is used for determining whether the received second signal satisfies a triggering condition and sending a triggering signal to the alarm unit if yes, and the alarm unit is used for giving an alarm in the condition of receiving the triggering signal. According to the system, the false alarm rate caused by false triggering of animals in a security monitoring system is reduced without increasing the equipment cost and the power consumption.

Description

technical field [0001] The disclosure relates to an infrared motion sensing system, which belongs to the technical field of sensors. Background technique [0002] Pyroelectric infrared (PIR) sensor is a passive infrared detector based on the principle of pyroelectric effect. If the PIR sensor senses a change in its infrared radiation source, it will output a weak current, coupled with a Fresnel lens and a signal conditioning circuit, the detection of a moving human body can be realized. The traditional PIR sensor system is widely used in security and lighting control systems due to its low power consumption and low cost. However, since PIR sensors are sensitive to infrared radiation sources, and the basic signal conditioning circuit only does a certain processing of voltage, it is particularly easy to be falsely triggered by pets. Contents of the invention [0003] In view of this, the present disclosure proposes an infrared motion sensing system, which can reduce the fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/191
Inventor 姜海波刘晓稳刘杨
Owner SUZHOU RIPPLEINFO TECH CO LTD
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