Anti-interference design of frequency signal acquisition circuit of monitoring substatio
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摘要: 分析了煤矿井下传感器的频率信号在传输过程中受干扰的主要原因，重点阐述了井下监控分站频率信号采集电路的抗干扰设计方案。该方案在硬件上采用动态阈值和静态阈值相结合的方法去除干扰信号，在软件上采用滑动滤波算法筛选异常信号。实际应用结果验证了该方案的可行性及有效性。Abstract: The paper analyzed main causes of interference in frequency signal transmission of underground sensors of coal mine, and focused on anti-interference design scheme of frequency signal acquisition circuit of underground monitoring substation. The scheme combines dynamic threshold and static threshold to remove interference signal in hardware, and uses sliding filtering algorithm to filtrate abnormal signal in software. The practical application results verify feasibility and effectiveness of the design scheme.
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