Infrared signal detection device for respiratory tract air quality monitoring system on roadside

Abstract

The invention discloses an infrared signal detection device used in a roadside airway air quality monitoring system, comprising a base, an infrared detector, a filter wheel, a driving board and a photoelectric switch, and the infrared detector is welded on the driving board , the drive plate is fixed on the two-dimensional adjustment frame through a screw assembly, the two-dimensional adjustment frame is fixed on the base through a screw assembly, the filter wheel is arranged in front of the infrared detector, and the filter The wheel is driven by a DC brushless motor, the DC brushless motor is fixed on the base through a screw assembly, and the photoelectric switch is fixed on the base through a spacer. The invention can realize high-sensitivity infrared signal detection and multi-filter fast multi-wavelength signal detection, and has the advantages of simple device structure, high reliability, and simple and convenient debugging.

Description

technical field [0001] The invention relates to an infrared signal detection device used in a roadside airway air quality monitoring system, belonging to the field of applied optics. Background technique [0002] At present, the common infrared signal detection devices have short optical path or single-wavelength detection, and the detection sensitivity is low. The multi-wavelength detection device generally installs the filter wheel and the infrared detector separately, and the structural stability is poor, which is not conducive to weak signal detection. Contents of the invention [0003] The purpose of the present invention is: to provide an infrared signal detection device used in the air quality monitoring system of the side respiratory tract, which can perform multi-filter fast multi-wavelength signal detection through high-speed rotating filter wheel, and has high structural stability, In order to solve the problems of low detection sensitivity of existing single-wa...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an infrared signal detection device used in the roadside respiratory air quality monitoring system, which can perform multi-filter fast multi-wavelength signal detection through high-speed rotating filter wheel, and has high structural stability. To solve the problems of low detection sensitivity of existing single-wavelength infrared signals and poor structural stability of multi-wavelength detection devices

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