Laser-scattering-based air quality detecting system
A technology of air quality detection and laser emission system, which is applied in the direction of radio wave measurement system, measurement device, and utilization of re-radiation, etc. It can solve the problems of low signal-to-noise ratio, cumbersome procedures, time-consuming, etc., and achieve simple system structure and guaranteed detection Accuracy, overcoming the effect of unstable light source intensity
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[0022] The specific embodiments and working principles of the present invention will be described in further detail below with reference to the accompanying drawings.
[0023] Such as figure 1 As shown, an air quality detection system based on laser scattering includes a laser emitting system 1, a laser receiving system 2, and a sample cell 9. The laser emitting system 1 is provided with a laser light source 3 and a first photoelectric receiver 10. The laser light emitted by the laser light source 3 sequentially passes through the polarizer 4, the aperture stop 5, the first condenser lens 6, the first beam splitter 7, and the second condenser lens 8 and then enters the sample cell 9, and the first Another path of light split by the beam splitter 7 enters the first photoelectric receiver 10; the laser receiving system 2 is provided with a third condenser lens 11 and a second photoelectric receiver 12, and the laser emitting system 1 emits The laser light is incident on the air pa...
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