A Study on Improving the Abnormal Signal Detection Ability of Digital Storage Oscilloscope

摘要

Abnormal signal detection is a hot research in electronic test field. The digital storage oscilloscope detects abnormal signals by signal acquisition, abnormal signal identification, storage and display. Though the existing oscilloscope signal acquisition ability is technically improved by increasing the sampling rate, the waveform capture rate and other indicators, the identification, storage and display of abnormal signal show some deficiencies, which results in low abnormal signal detection efficiency and less application of detection function. The purpose of this paper is to improve the digital storage oscilloscope abnormal signal detection ability totally, design the abnormal signal detection system based on FPGA, study the method to improve the abnormal signal identification, storage and display, realize real-time, accurate identification and storage of abnormal signal in long period of time without manual monitoring, realize accurate offline positioning for abnormal signal in multiple display modes, and greatly improve the abnormal signal detection efficiency and practicability of the oscilloscope.