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Thermal release electric infra-red ray human body detection device

A technology of human body detection and pyroelectricity, which is applied in the direction of electric radiation detectors, etc., can solve the problems of limited application, static human body can not play a role, etc., and achieve the effect of easy realization and flexible movement control

Inactive Publication Date: 2008-10-15
SHENZHEN H&T INTELLIGENT CONTROL
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Therefore, in the prior art, the pyroelectric infrared human body detection device cannot function on a stationary human body, which limits its application in some special occasions

Method used

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  • Thermal release electric infra-red ray human body detection device
  • Thermal release electric infra-red ray human body detection device

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Experimental program
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Embodiment Construction

[0017] Such as figure 1 and figure 2 As shown, a pyroelectric infrared human body detection device includes a pyroelectric infrared sensor 3, a Fresnel lens 7, a moving mechanism and an electronic circuit. The electronic circuit of the pyroelectric infrared sensor is prior art, not shown in the figure. The moving mechanism includes a driving device and a support frame 2 . The driving device is the motor 1, and of course the driving mechanism can also be other equipment, such as cylinders, solenoid valves and the like.

[0018] The support frame 2 is fixed on the shaft end of the motor 1, and the support frame 2 can be in various shapes, and being made into a circle or a semicircle is conducive to stable rotation. The pyroelectric infrared sensor 3 is fixed above the support frame 2 . The support frame 2 is also provided with a left travel switch 4 and a right travel switch 5, which are respectively located on the left and right sides of the pyroelectric infrared sensor 3 ...

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PUM

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Abstract

The invention discloses a pyroelectric infrared human body detection device. The device comprises a pyroelectric infrared sensor, a Fresnel lens, an electronic circuit and a moving mechanism; the pyroelectricity infrared sensor is fixed on the moving mechanism which comprises drive equipment and a bracing frame driven by the drive equipment; and the pyroelectric infrared sensor is fixed on the bracing frame. A travel switch is arranged on the bracing frame; the electronic circuit comprises a control circuit of the travel switch; the control circuit of the travel switch receives a travel switch signal to control the operation of the drive equipment. The pyroelectric infrared human body detection device is provided with the moving structure to drive the pyroelectric infrared sensor to move in order that the static human body has movement relative to the pyroelectricity infrared sensor, thereby realizing the induction and the detection to the static human body.

Description

technical field [0001] The invention relates to a human body detection device, in particular to a pyroelectric infrared human body detection device. Background technique [0002] The pyroelectric infrared detector is a photoelectric detection device composed of a pyroelectric infrared sensor, a Fresnel lens and an electronic circuit. It can detect the infrared radiation radiated by the human body without contact and convert it into an electrical signal output. When the human body is at rest, when the two photoelectric electrodes of the pyroelectric sensor are irradiated by infrared rays at the same time, the output voltages cancel each other out and there is no output. Only when the human body moves can there be voltage output, and the output voltage can accurately reflect the movement of the human body. . Therefore, in the prior art, the pyroelectric infrared human body detection device cannot function on a stationary human body, which limits its application in some specia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/12
Inventor 宋护朝刘建伟蒋洪波
Owner SHENZHEN H&T INTELLIGENT CONTROL
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