基于软阈值去噪的SF6小信号检测系统的研究与应用

2021 International Symposium on Electrical, Electronics and Information Engineering Pub Date : 2021-02-19 DOI:10.1145/3459104.3459131

Mingshu Yao, Xiaofeng Xu, Zhenhe Ju, Bo Qv, Zhongyuan Zheng

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引用次数: 0

摘要

SF6等弱信号采集受工频干扰和传感器极化电压的影响。如果将集成仪表放大器直接用作小信号放大器，则存在数据偏差大等问题。本文建立了温度补偿法与多级增益相结合的冗余监测系统，采用软阈值去噪方法对干扰信号进行滤波，并通过STM32F4单片机实现SF6在线数据监测。

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Research and Application of SF6 Small Signal Detection System Based on Soft Threshold Denoising Method

The weak signal acquisition such as SF6 is affected by power frequency interference and sensor polarization voltage. If the integrated instrument amplifier is directly used as small signal amplifier, there are some problems, such as large data deviation. In this paper, a redundant monitoring system combining temperature compensation method and multi-stage gain is established, and the soft threshold denoising method is used to filter the interference signal, and the SF6 on-line data monitoring is realized by STM32F4 single chip microcomputer.

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2021 International Symposium on Electrical, Electronics and Information Engineering

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