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首页>《中国测试》期刊>本期导读>脉冲磁场传感器的设计与灵敏度修正方法

脉冲磁场传感器的设计与灵敏度修正方法

181    2019-04-02

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作者:朱宇洁, 郭晓东, 宋佳玲

作者单位:中国工程物理研究院计量测试中心, 四川 绵阳 621900


关键词:脉冲磁场;传感器;灵敏度;修正方法


摘要:

在武器设计研究中,对客体做闪光照相时需要用到脉冲磁场对某一个或几个用于聚焦打靶的电子束团进行调节。为清楚脉冲磁场的强度,分析时变聚焦的效果,基于法拉第电磁感应定律研制用于测量脉冲磁场的脉冲磁场传感器;同时,在分析传统传感器采用固定比例尺寸绕制的特点基础上,根据被测磁场源幅频特性,设计合理尺寸的单匝线圈作为传感器的探头线圈,克服了传统线圈中热噪声电压和由于匝数较多导致的对二次仪表不良影响,并提出解决单匝线圈在测量时“点”性不好的方法。通过实验数据和理论值的对比,验证了方法的有效性。


Design and sensitivity correction method of pulsed magnetic field sensor
ZHU Yujie, GUO Xiaodong, SONG Jialing
Metrology and Measurement center, China Academy of Engineering Physics, Mianyang 621900, China
Abstract: In the weaponry research, when taking flash photography, it is necessary to use a pulsed magnetic field to adjust each of the electron beams for focusing the target. In order to ensure the clarity of the flash photography, a pulse magnetic field sensor for measuring pulsed magnetic field is developed based on Faraday's law of electromagnetic induction. At the same time, on the basis of the analysis of the shortcomings of conventional sensors with fixed proportion size, according to the Amplitude-Frequency characteristic of the measured magnetic field source, a single turn coil with reasonable size is designed as the probe coil of sensor, which overcomes the risk of the thermal noise in the traditional coil and the risk to the second instrument caused by the more turns, meanwhile, a method to solve the problem of "point" in single coil measurement is presented.The validity of the method is proved by comparing experimental data with theoretical values.
Keywords: pulsed magnetic field;sensor;sensitivity;correction method
2019, 45(3):114-120  收稿日期: 2018-06-04;收到修改稿日期: 2018-07-14
基金项目:
作者简介: 朱宇洁(1985-),女,四川绵阳市人,工程师,硕士,主要从事电磁学测量工作
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