Multi-parameter sensing module

Abstract

The invention discloses a multi-parameter sensing module. The multi-parameter sensing module comprises a shell, a plurality of partition plates, a fan, a particulate matter sensor, a gas sensor module, a temperature sensor, a temperature and humidity sensor, a heating device and a control unit. The heating device heats air to be at an effective working temperature before the air enters the gas sensor module. The control unit compensates the detection value of the particulate matter sensor according to air humidity and controls the heating device to be opened and closed, hence, the multi-parameter sensing module can work normally under a low temperature environment, sensor failure can be prevented, and moisture condensation inside the multi-parameter sensing module can be avoided. The partition plates and the shell are integrally formed by a totally-enclosed casting aluminum structure, so that the gastightness and shielding capacity of the inside of the module are guaranteed. Meanwhile, it is guaranteed that laser leakage is avoided, and anti-jamming capability is improved.

Description

technical field [0001] The present invention relates to sensor technology, more specifically, to a multi-parameter sensing module that can simultaneously measure multiple air parameters in the environment and can compensate for environmental influences. Background technique [0002] Air quality has a very important impact on people's health, and pollutants in the air are the inducing factors of many diseases. At present, the harmful pollutants in indoor air mainly include: fine particles (Particulate Matter 2.5, PM2.5) with a diameter of less than 2.5 microns, dust particles with a diameter of less than 10 microns, PM10, and volatile organic compounds (Volatile Organic Compounds, VOC )Wait. PM2.5 and PM10 are the main components of today's smog pollutants. VOC includes cigarette smoke, formaldehyde, toluene, ammonia, etc. released from building and decoration materials, and the indoor carbon dioxide CO2 concentration represents the fresh air volume and ventilation level. T...

AI Technical Summary

Problems solved by technology

However, at present, on the one hand, the detection parameters of various detection equipment are single, and when users need to measure multiple parameters, they need to use multiple different sensors or monitoring instruments, which occupy a large space and are expensive; on the other hand, the detection equipment is more affected by the working environment during measurement. Large, changes in the working environment will cause the test results to deviate greatly from the actual value, and even the test equipment cannot work normally

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