脉冲磁场测试方法及影响因素探究

摘要

脉冲磁场信号上升沿陡峭，可以从μs级到ns级，信号幅值较大，时间持续较短。通过传导、辐射等方式对周围环境中的设备形成剧烈的干扰。这种瞬态脉冲磁场在空间各点的磁场强度随位置的变化而急剧变化，采用小的探头对其进行测量，才能分辨场强在空间分布的细微变化，本文分析了小线圈测量方法的原理，设计了测试线圈，并对影响传感器的主要因素进行了分类分析，提出了相应的改进方案。%The duration of pulse electromagnetic signal is short and the amplitude of them is huge.The rising edge of the signal is μs to ns usually.The signal can bring disturb to all kinds of equipments by conducting and radiation.The magnetic field intensity is difference at different position.The smaller the magnetic probe the higher spatial resolution.This article analyzes the testing principle and designs the testing loop.After classifying and analyzing the influencing factors to the sensor,the article bring out relevant improvement project.