摘要
针对电引爆装置在复杂电磁辐射环境中会通过电磁耦合产生感应电流,导致电引爆装置失火的问题,提出了一种基于锁相技术的非接触式感应电流检测方法。采用基于隧道磁阻效应的电流探头,根据电磁感应原理,结合锁相技术对隧道磁阻探头的输出信号进行分析,从而对感应电流进行实时监测,避免失火;得出基于锁相技术的非接触式感应电流检测方法相比于传统的红外比色测温法,具有更快的响应速度和更高的测量精度的结论。搭建了强电磁环境对电引爆装置的工作环境进行模拟,采用非接触式电流探头进行实验检测,实现对感应电流的监控、检测,达到预警效果,实验结果表明所述方法的电流检测精度±0.1 mA范围内波动,满足电引爆装置发火电流的检测要求,为复杂电磁环境下电引爆装置的感应电流监测提供了有效的解决方案。
Aiming at the problem that the electric detonating device will generate induced current through electromagnetic coupling in a complex electromagnetic radiation environment, which will cause the electric detonating device to misfire, a non-contact induced current detection method based on phase lock technology is proposed. The current probe based on the tunnel magnetoresistance effect is used, and the output signal of the tunnel magnetoresistance probe is analyzed according to the principle of electromagnetic induction and phase-locking technology, so as to monitor the induced current in real time to avoid fire, and the non-contact based on phase-locking technology is obtained. Compared with the traditional infrared colorimetric temperature measurement method, the inductive current detection method has a faster response speed and higher measurement accuracy. A strong electromagnetic environment is built to simulate the working environment of the electric detonation device, and a non-contact current probe is used for experimental detection to realize the monitoring and detection of induced current and achieve the early warning effect. The experimental results show that the current detection accuracy of the method is ±0.1 Fluctuations in the mA range meet the detection requirements of the ignition current of the electric detonation device, and provide an effective solution for the induction current monitoring of the electric detonation device in a complex electromagnetic environment.
作者
张鹏
黄晓龙
王耀利
Zhang Peng;Huang Xiaolong;Wang Yaoli(School of Instrument and Electronics,North University of China,Taiyuan 030051,China;Nantong Institute of Intelligent Opto-Mechatronics,North University of China,Nantong 226000,China)
出处
《电子测量技术》
北大核心
2021年第2期154-158,共5页
Electronic Measurement Technology
基金
国家自然基金面上项目(61573323)
山西省面上青年基金项目(201801D221172)资助。
关键词
感应电流
电火工品
锁相技术
微弱信号检测
induction current
EED
phase lock technology
weak signal detection
