论文标题
了解B点探测器的工作
Understanding the working of a B-dot probe
论文作者
论文摘要
磁拾取环或B点探针是最古老的时变磁场传感器之一。该操作原理基于法拉第的电磁诱导定律。但是，使用这类探针获得时间变化的磁场的准确测量是一项具有挑战性的任务。 B点探头及其相关电路容易出现电振荡。结果，测得的信号可能无法忠实地表示由B点探针采样的磁场。在本文中，我们研究了B点探针的瞬时响应及其相关的电路对时间变化的磁场。描述了去除与检测器结构有关的振荡的方法。去除振荡信号的源后，我们表明，通过数字炎测量的时间集成诱导的EMF与B-DOT探针采样的磁场成正比，从而验证了测量信号的忠诚度。
Magnetic pickup loops or B-dot probes are one of the oldest known sensors of time-varying magnetic fields. The operating principle is based on Faraday's law of electromagnetic induction. However, obtaining accurate measurements of time-varying magnetic fields using these kinds of probes is a challenging task. A B-dot probe and its associated circuit are prone to electrical oscillations. As a result, the measured signal may not faithfully represent the magnetic field sampled by the B-dot probe. In this paper, we have studied the transient response of a B-dot probe and its associated circuit to a time-varying magnetic field. Methods of removing the oscillations pertaining to the detector structure are described. After removing the source of the oscillatory signal, we have shown that the time-integrated induced emf measured by the digitiser is linearly proportional to the magnetic field sampled by the B-dot probe, thus verifying the faithfulness of the measured signal.
