Design of Paper Measurement System Based on Capacitive Detection
In order to realize the rapid measurement of the number of paper items,a paper measurement system based on capacitance de-tection is designed.The parallel plate capacitor is constructed,and the capacitance value is calculated by measuring the resonant fre-quency on the hardware"STM32+FDC2214"platform using the L-C resonant principle.The quantity of measuring paper is obtained by capacitance signal,and single measuring unit and multiple measuring units are made for comparison experiment.Introduced in sof-tware design μCOS-Ⅱ embedded operating system enhances the reliability and security of the system.The system has two modes of learning and measurement.The fitting relationship between capacitance and electrode plate spacing is obtained through the algorithm in the learning mode,and the measurement results are displayed using OLED display screen in the measurement mode.After many times of system tests,the designed system can realize the fast measurement of up to 80 sheets of paper,and improve the measurement accuracy.
capacitor detectionpaper measurement systemcapacitive sensorFDC2214embedded operating system
万方数据
维普
