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Laser dust sensor

A dust sensor and laser technology, applied in scientific instruments, color/spectral characteristic measurement, measuring devices, etc., can solve the problems of short service life and low detection accuracy

Pending Publication Date: 2020-12-18
深圳市汇投智控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a laser dust sensor for the problems of low detection accuracy and short service life

Method used

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...

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Abstract

The invention relates to a laser dust sensor which comprises a shielding cover with an air inlet and an air outlet, a middle shell fixed in the shielding cover, a circuit board and an air draft unit which are fixed in the middle shell, a support fixed on the circuit board, and a laser generating unit fixed on the support; the circuit board is provided with aphotoelectric sensor, and is electrically connected with an air draft unit and the laser generation unit; the support is provided with a detection cavity, the detection cavity is provided with an air inlet and an air outlet, and the side wall close to the circuit board is provided with a through hole penetrating the thickness to expose the photoelectric sensor. The shielding cover, the circuit board and the middle shell form an air inlet channel communicated with the air inlet and the air inlet, a lifting structure is arranged in the air inlet channel and used for lifting the airflow entering the air inlet in a direction parallel tothe axis direction of the through hole towards the direction away from the through hole, and the situation that dust in the airflow is accumulated on the photoelectric sensor due to natural sedimentation is reduced. The detection precision and reliability of the laser dust sensor are improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of dust detection, in particular to a laser dust sensor. Background technique [0002] In recent years, with the gradual improvement of the quality of life, people have paid more and more attention to air quality. The laser dust sensor uses the principle of optical scattering to detect the concentration of dust in the air, which can quickly detect air quality and is widely used in air freshening. Machines, air purifiers, environmental monitoring equipment, air conditioners, ventilation equipment, air quality detectors and other equipment, suitable for detection of indoor environments such as factories, offices, and rooms. [0003] At present, the laser dust sensor mainly includes a laser emitting device, an exhaust device and a photoelectric detection device. When working, the exhaust device drives the airflow into the dust detection area, and the laser emission device is aimed at the dust detection area to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06G01N21/53G01N21/27G01N1/24
CPCG01N15/06G01N21/53G01N21/27G01N1/24G01N15/075
Inventor 周正王东阳王毅黄连辉
Owner 深圳市汇投智控科技有限公司
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