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Human body detection device based on infrared heat source detection

A human body detection and heat source technology, which is applied in the field of human body detection devices based on infrared heat source detection, can solve problems such as limitations, limited detection range, and inability to detect human bodies, and achieves the effect of improving resolution

Active Publication Date: 2015-03-18
HAIER GRP CORP +1
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  • Abstract
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Problems solved by technology

[0003] In existing applications, the position of the pyroelectric infrared sensor is fixed. When the human body moves within the detection range, the pyroelectric sensor can detect the heat source signal to generate a point electrical signal; Humans cannot be detected within range
And in the traditional scheme, the detection range is determined by the characteristics of the Fresnel lens and the pyroelectric infrared sensor, the detection range is limited, and there are limitations in the range

Method used

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  • Human body detection device based on infrared heat source detection
  • Human body detection device based on infrared heat source detection

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Embodiment Construction

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] The following will be combined with figure 1 - attached figure 2 , the human body detection device based on infrared heat source detection provided by the embodiment of the present invention is introduced in detail.

[0024] See figure 1 and figure 2 , the human body detecting device of the present embodiment comprises casing 1, pyroelectric infrared sensor 2, and driving motor 4, and pyroelectric infrared sensor 2 is installed in casing 1 inside, and ca...

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Abstract

The invention discloses a human body detection device based on infrared heat source detection. The human body detection device comprises a housing, a pyroelectric infrared sensor and a driving motor, wherein the pyroelectric infrared sensor is arranged inside the housing; the housing and the pyroelectric infrared sensor are driven to rotate synchronously by the driving motor; the housing is provided with a strip-shaped slit; the pyroelectric infrared sensor comprises an infrared probe; a Fresnel lens is arranged at the front end of the infrared probe; the Fresnel lens is over against the slit in the housing. According to the technical scheme of the invention, the infrared heat source of a static human body within 360 degrees can be detected, and the detection resolution is high.

Description

technical field [0001] The invention relates to a human body detection device, in particular to a human body detection device based on infrared heat source detection. Background technique [0002] The pyroelectric infrared sensor is a sensor that uses temperature changes to cause changes in the surface charge of the crystal. It is mainly made of a material with a high pyroelectric coefficient, such as lead zirconate titanate ceramics, lithium tantalate, triglyceride titanium sulfate, etc. A detection element with a size of 2*1mm. Usually, two detection elements are installed in each sensor, and the two detection elements are connected in series with reverse polarity. The detection element converts the detected and received infrared radiation into a weak voltage signal, which is amplified by the field effect tube and then outwards. output. It is widely used in infrared fields such as anti-theft alarm, visitor notification and non-contact switch control. [0003] In existin...

Claims

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Application Information

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IPC IPC(8): G01J5/10G01J5/02
Inventor 时斌王军国德防程绍江禚百田由秀玲
Owner HAIER GRP CORP
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