一种电流信号检测装置的设计

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作者：甘永进 ; 莫海林 ; 杨桂静 ; 吴学思 ; 何彩翡 ; 何绮雯 关键词：电流检测 ; 放大电路 ; 电流传感器 ; 精度 英文关键词：Current sensor;;Single chip microcomputer;;Amplifier circuit;;Integrator circuit;;DC voltage Acquisition 中文刊名：ZXDB 英文刊名：Science and Technology Innovation Herald 机构：玉林师范学院物理与电信工程学院; 出版日期：2019-01-01 出版单位：科技创新导报 年：2019 期：v.16;No.469 基金：2018年国家级大学生创新创业训练项目(项目编号:201810606002);; 2018年大学生创新创业训练计划项目(项目编号:201810606005);; 2017年广西区高等教育本科教学改革工程项目(项目编号:2017JGB358) 语种：中文; 页：ZXDB201901041 页数：3 CN：01 ISSN：11-5640/N 分类号：88-90

摘要

传统的电磁式电流检测装置,因其结构存在较多缺点,无法满足当前电力系统发展要求。基于此,设计一种电流检测装置,可达到如下指标:(1)设计的功率放大电路,满足当输入正弦信号频率范围为50Hz-1.2kHz时,通过10Ω负载电阻的电流峰峰值不小于1A,且电流信号波形无失真;(2)以漆包线绕制线圈制作电流传感器获取电流信号,设计电流信号检测分析电路,测量并显示电流信号的峰峰值及频率;(3)被测正弦电流峰峰值范围为10mA-1A,电流测量误差小于5%,频率测量误差小于1%。
        Absrtact: The traditional electromagnetic current detection device can not meet the current power s ystem development requirements because of its many shortcomings in structure. Based on this, a curr ent detection device is designed, which can achieve the following targets:(1) the designed power am plif ier circuit meets the requirements that when the input sinusoidal signal frequency range is 50 Hz-1.2 kHz, the peak value of current through 10_load resistance is not less than 1 A, and the waveform of cur rent signal is undistorted;(2) the current sensor is made by enameled wire winding coil. The instrument ac quires current signal, designs current signal detection and analysis circuit, and measures and displays the pe ak value and frequency of current signal;(3) The peak value range of measured sinusoidal current is 10 mA-1 A, the current measurement accuracy is less than 5%, and the frequency measurement accuracy is less than 1%.

引文

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