基于恒流充电原理的纸张计数电路的设计与研究

Design and Research of Paper Counting Circuit Based on the Principle of Constant Current Charging

本文利用恒流充电原理设计了一种测试平行板间电容和计数平行板间纸张的电路。电路系统以STM32G4最小系统为控制核心,由平行板电容器、电容检测电路、信号调制电路、人机交互系统构成。通过Multisim软件进行仿真,电路系统稳定可靠,可精确得到被测纸张电容与纸张数目,具有良好的计数效果。

This paper uses the principle of constant current charging to design a circuit for testing the capacitance between parallel plates and counting the paper between parallel plates.The circuit system is controlled by the STM32G4 minimum system,consisting of parallel plate capacitors,capacitance detection circuits,signal modulation circuits,and humanmachine interaction systems.Through simulation using Multisim software,the circuit system is stable and reliable,and the measured paper capacitance can be accurately obtained,resulting in a good counting effect.