Particle sensor calibration and working characteristic parameter measurement device

Abstract

The invention relates to a particulate matter sensor calibrating and working property parameter measuring device, and belongs to a data measuring and testing device for concentration of particulate in air environment. The particulate sensor calibrating and working property parameter measuring device is characterized by comprising a particulate matter storage bin, a disc cigarette lighter and a testing cabin, wherein the particulate storage bin is used for storing particulate matter produced by the cigarette lighter and supplying to the testing cabin; the disc cigarette lighter is arranged in the particulate matter storage bin; the testing cabin is used for controlling the concentration of testing particulate matter and the temperature and the humidity; a temperature and humidity control device is arranged in the testing cabin; an air pump is arranged in the particulate matter storage bin, and is communicated with the testing bin through an air conveying pipeline; the air pump is electrically connected with a timing driving circuit module of the air pump. The particulate sensor calibrating and working property parameter measuring device has the advantages that the matter specified by the national standard, namely Hongtashan cigarette, is used as the source of standard particulate matter, and the testing environment with constant concentration, temperature and humidity is obtained for calibrating the particulate matter sensor; the device is simple, the manufacturing cost is low, the operation is simple, and the automation degree is high.

Description

[0001] Technical field: [0002] The invention relates to a particle sensor calibration and working characteristic parameter measuring device, which belongs to a data measuring test device for particle concentration in air environment. [0003] Background technique: [0004] In recent years, the impact of inhalable particulate matter (PM2.5 or PM10) on human health has become the most concerned topic in environmental issues, and the device for monitoring the concentration of particulate matter is the most direct information acquisition for people to understand the health of the surrounding environment Compared with professional particle concentration detection methods and devices, low-cost particle concentration sensors can monitor the concentration of particles in local indoor and outdoor environments more conveniently and quickly, and are also easy to install on household air purifiers to improve the performance of household air purifiers. It has been widely used in the field...

AI Technical Summary

Problems solved by technology

If the above-mentioned invention is used to calibrate the particulate matter sensor, it may cause the results of the qualified sensor to be installed on the household air purifier to be inconsistent with the above-mentioned purification attenuation curve, thus causing the public to question the monitoring ability of the particulate matter sensor, or to The testing level of the testing unit has been questioned

[0008] At present, there is no product used for calibration or calibration of PM2.5 detectors. The generation method of PM2.5 in the national standard GB / T18801-2015 is obviously impossible to establish a preset stable particle concentration in the environmental chamber. , so the instruments and equipment specified in the above national standards are not applicable to the calibration or calibration of PM2.5 detectors or particle sensors

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