Calibration method for dust sensor and calibration device

Abstract

The invention relates to the field of sensor calibration and discloses a calibration method for a dust sensor and a calibration device. At least one dust sensor is arranged in a calibration environment. The calibration method comprises the following steps: controlling the change of the dust concentration under the calibration environment; using a standard source for detecting the dust concentration in the calibration environment; acquiring the dust concentration detected by the standard source at a first preset time interval and acquiring the particle number corresponding to the dust concentration detected by at least one dust sensor; determining the calibration parameter of the corresponding dust sensor according to the detected dust concentration and detected particle number. According to the calibration method, the accuracy of the calibration parameter of the dust sensor can be increased and further the accuracy of the dust sensor can be increased.

Description

technical field [0001] The invention relates to the field of sensor calibration, in particular to a calibration method and a calibration device for a dust sensor. Background technique [0002] Dust (such as PM10, PM2.5, etc.) sensors are based on the principle of particle counting, which needs to be calibrated to convert the number of dust particles into dust concentration, such as mass density, in micrograms per cubic meter. [0003] At present, the calibration accuracy of the dust sensor in the prior art is not high, which further affects the measurement accuracy of the dust sensor. For the air pollution that often occurs now, for example, the PM2.5 sensor will not be able to provide users with a more accurate PM2.5 value, which greatly affects the operation accuracy of associated products (such as air purifiers). Contents of the invention [0004] The object of the present invention is to provide a calibration method and a calibration device for a dust sensor, which ca...

AI Technical Summary

Problems solved by technology

[0003] At present, the calibration accuracy of the dust sensor in the existing technology is not high, which in turn affects the measurement accuracy of the dust sensor

For the air pollution that often occurs now, for example, the PM2.5 sensor will not be able to provide users with a more accurate PM2.5 value, which greatly affects the operation accuracy of associated products (such as air purifiers)

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