Aerosol sensor detection system and detection device

Abstract

The invention relates to an aerosol sensor detection system and a detection device. The detection system comprises a power supply conversion unit, a controller unit, an aerosol detection unit, a data interface unit and an abnormal state monitoring unit. The detection device comprises a main shell, a PCB support, a PCB and a bottom shell. According to the detection system, hardware and software closed-loop control is adopted for the infrared LED light-emitting tube, it can be guaranteed that the intensity of light sources emitted by the light-emitting tube every time is consistent, and the precision of the detection system is effectively improved. According to the detection device, the lens is additionally arranged in front of the photoelectric tube, and scattered light sources are gathered, so that the signal lightness of the photoelectric tube is preliminarily improved, and the resolution of the sensor can be improved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of aerosol sensor detection, in particular to an aerosol sensor detection system and a detection device. Background technique [0002] Aerosol is a gaseous dispersion system composed of solid or liquid particles suspended in a gas medium. Because of its scattering effect on light, an aerosol detection system is generally composed of a light-emitting tube and a photoelectric tube. The light-emitting tube emits a specific light source, After the light source is scattered by the aerosol, it is received by the photocell, and the concentration of the aerosol in the environment is determined by the light intensity received by the photocell. After the light source is scattered by the aerosol, the light source will continuously attenuate, which will reduce the resolution and accuracy of the photocell, thereby reducing the detection accuracy of the existing aerosol sensor. Moreover, the open-loop control of the ligh...

AI Technical Summary

Problems solved by technology

After the light source is scattered by the aerosol, the light source will continue to attenuate, resulting in a decrease in the resolution and accuracy of the photocell, resulting in a decrease in the detection accuracy of the existing aerosol sensor

Moreover, the open-loop control of the light-emitting tube will continue to emit light and generate heat accumulation under the condition of continuous operation, which will affect the stability of the photoelectric tube.

Secondly, due to circuit or environmental reasons, the driving voltage of the luminous tube may fluctuate, resulting in inconsistent light intensity of the luminous tube, which will eventually affect the accuracy of the aerosol sensor

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