注：安徽高校自然科学研究项目 (NO.KJ2017A766)；安徽省级质量工程项目 (NO.2013tszy088)
作者：徐艳霞，徐济成，汪海威
单位：安徽中澳科技职业学院，安徽合肥 230041
中图分类号：TN29         
文献标识码：A        
文章编号：1006-883X(2017)05-0016-05
收稿日期：2017-02-23

摘要：介绍了一种新的脉冲电流检测、传输的原理，通过自动分段检测技术实现脉冲电流的检测。介绍了分段电流检测的实现方法，设计了分段电流检测电路，解决了宽范围电流检测的难题。在此基础上，设计了脉冲电流光纤传感器的程序，给出了产品程序流程图。此外，通过限幅滤波法和算术平均滤波法解决了变频、大电流信号易受干扰的难题，满足了技术指标对精度和分辨率的要求。设计的脉冲电流光纤传感器具有检测范围宽(0.1A～10A)、频率可变(DC～100kHz)、精度高(≤0.5%)和分辨率高(5mA)等特点。
关键词：脉冲电流；光纤传感器；自动分段；电流检测

Principle and design of a fiber-optical  pulse current sensor
XU Yan-xia, XU Ji-cheng, WANG Hai-wei
Anhui Zhong-Ao Institute of Technology, Hefei 230041, China
Abstract: In this paper, a new principle of pulse current detection and transmission is introduced, which achieves the pulse current detection by automatic subsection technology. Automatic subsection current detection solves the problem of wide-range current detection. On this basis, the program of the pulse current optical fiber sensor is designed and the flow chart is given. In addition, the problem of variable-frequency and large current signals easy to be interfered is solved by the methods of amplitude-limited filtering and arithmetic average filtering, and the requirements of the technical index for the precision and resolution are meet. The designed pulse current optical fiber sensor has advantages of wide detection range (0.1A~10 A), variable frequency (DC~100kHz), high precision (less than 0.5%) and high resolution (5mA), etc..
Keywords: pulse current; optical fiber sensor; automatic section detection; current detection

备注：2017年 第23卷 第05期