关键词: 粉尘浓度, 电容传感器, 电桥, 标定

Abstract:

The research on the dust concentration measurement is very important to the accuracy and precision of the measure of the dust concentration.The principles of the capacitance sensor are discussed and a new capacitance measurement method is proposed.The measurement circuit and system are designed using the bridge method to measure the industrial dust by experiment.The experimental results are analyzed and calibrated to yield the relationship between the measurement result and the dust concentration.This results show that the capacitance method is reliable in industrial dust concentration measurements.

Key words: dust concentration;capacitance sensor;a bridge;calibration