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Air quality detector

A technology for air quality and detectors, which is applied in measuring devices, scientific instruments, suspensions and porous material analysis, etc. It can solve the problems of large interference and great influence on the detection accuracy of solid particle content, etc.

Inactive Publication Date: 2016-05-04
吴德炳 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The current air quality detection equipment mostly relies on infrared sensors to detect solid particles in the environment. However, infrared sensors have high requirements for external light conditions, and are greatly disturbed in sunlight. The detection accuracy has a great influence

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. figure 1 For a schematic block diagram of an air quality detector provided by an embodiment of the present invention, see figure 1 , an air quality detector provided in this embodiment, comprising:

[0022] Fan 100, laser generator 101, silicon photocell 102, photodiode 103, analog signal conditioning circuit 104, analog-to-digital conversion circuit 105, calculation and judgment circuit 106 and display 107, wherein,

[0023] The laser generator 101 is arranged on the air outlet direction of the fan 100, and its light output direction is parallel to the illumination surface of the silicon photocell 102; the photodiode 103, whose input end is connected to the silicon photocell 102, Its output end is connected with the input end of described analog signal conditioning circuit 104; The output end of described analog signal...

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Abstract

The invention particularly relates to an air quality detector. The air quality detector comprises a fan, a laser generator, a silicon photocell, a photodiode, an analog signal conditioning circuit, an analog-to-digital conversion circuit, a calculation and judgment circuit and a display, wherein the laser generator is arranged in the air outgoing direction of the fan, and the laser outgoing direction of the laser generator is parallel with the illumination plane of the silicon photocell; an input end of the photodiode is connected with the silicon photocell, and an output end of the photodiode is connected with an input end of the analog signal conditioning circuit; an output end of the analog signal conditioning circuit is connected with an input end of the analog-to-digital conversion circuit, an output end of the analog-to-digital conversion circuit is connected with an input end of the calculation and judgment circuit, and an output end of the calculation and judgment circuit is connected with the display. With the adoption of the technical scheme, the concentration of solid particulate matters in the air can be detected by the aid of a laser source.

Description

technical field [0001] The invention relates to an air quality detection device, in particular to an air quality detection instrument. Background technique [0002] With the continuous improvement of living standards, people's awareness of environmental protection has gradually increased, and the problem of air pollution has attracted widespread social attention. The so-called air pollution means that the air contains one or more excessive pollutants, which destroy the biological chain and even harm the lives of humans, animals and plants. [0003] The harm of air pollution to the human body is mainly manifested in respiratory diseases, and the harm to plants is mainly manifested in the suppression of their physiological mechanisms, poor growth, and weakened resistance to diseases and insect pests. In addition, air pollution can also have adverse effects on the climate, such as reducing visibility, reducing solar radiation, and leading to an increase in the rate of rickets ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N15/075
Inventor 吴德炳吴登科周元雷
Owner 吴德炳
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