Detecting signal disturbance using asynchronous counter

Detecting signal disturbance using asynchronous counter. A circuit for detecting a signal disturbance comprising a high-pass filter, a comparator, an asynchronous counter, a synchronizer, and processing circuitry. The high-pass filter is configured to generate a filtered signal from a monitored signal. The comparator is configured to generate a compare result signal based on a comparison of the filtered signal and a threshold reference. The asynchronous counter is configured to generate a count value of threshold crossings based on the compare result signal. The synchronizer is configured to generate a synchronous output signal for storage at digital memory that is based on the count signal value. The processing circuitry is configured to determine that a disturbance has occurred at the monitored signal based on the synchronous output signal. 本文描述了使用异步计数器检测信号干扰。一种用于检测信号干扰的电路，包括：高通滤波器、比较器、异步计数器、同步器和处理电路。高通滤波器被配置为从监控信号生成滤波信号。比较器被配置为基于滤波信号与阈值参考的比较来生成比较结果信号。异步计数器被配置为基于比较结果信号来生成阈值交叉的计数值。同步器被配置为基于计数信号值来生成同步输出信号，以存储