一、问题提出缆道测流信号的传输一般有有线和无线法两种。有线法费用高,维修养护不便,而且经常出现断线现象;而无线法要求绝缘程度高,部件加工和维修困难,还因多数采用电子放大线路和振荡电路,故障率高。为此,笔者经过多次试验,研制成功一种简单可 First, the question put cable cable current measurement signal transmission are generally two kinds of wired and wireless law. Wired method is expensive, maintenance inconvenience, and often appear broken; and wireless law requires a high degree of insulation, parts processing and maintenance difficulties, but also because of the majority of the electronic amplification circuit and the oscillation circuit, the failure rate is high. To this end, after many experiments, I successfully developed a simple