Control loop pulse width and leakage current detection system and method

• Main Authors: LIU YAN, HOU SHUAI, YEH, ALIOSHA, ZHANG HAILONG, LI RAN, ZHU ENGUO, REN YI, LU JIZHE, ZHENG GUOQUAN
• Format: Patent
• Language: Chinese; English
• Published: 05.09.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a control loop pulse width and leakage current detection system and method. The system comprises a power supply module, an AD acquisition module, a control module and an embedded master control module, the AD acquisition module is used for detecting loop leakage current, converting the loop leakage current into a voltage signal, and performing weak signal differential amplification and alternating current signal superposition; the control module is used for applying alternating-current 220V voltage and detecting the output pulse width of the terminal; and the embedded master control module is used for sampling and analyzing, calculating the weak signal and the alternating current signal, and is responsible for task scheduling and inter-task communication of the AD acquisition module and the control module. 本发明公开了一种控制回路脉宽及漏电流检测系统及方法。所述系统包括电源模块、AD采集模块、控制模块和嵌入式总控模块；所述AD采集模块用于检测回路漏电流后转换为电压信号，进行微弱信号差分放大和交流信号叠加；所述控制模块用于施加交流220V电压与检测终端输出脉宽；所述嵌入式总控模块用于进行采样分析、计算所述微弱信号和交流信号，并负责AD采集模块和控制模块的任务调度与任