【摘要】 在对电缆结构以及电信号在电缆中传输的原理进行系统分析的基础上 ,根据电磁波在电缆中传播的特点 ,提出了非损伤性对电缆内部断点进行精确定位的方法。测试功能包括导通测试、断点检测与定位以及短路点的检测。采用电位比较法判断是否导通、短路或者开路 ,并通过光、声显示出来。利用波的反射原理 ,测取短路点或开路点到测试端的距离 ;利用电磁感应原理对开路点 (即断点 )进行精确定位更多还原

【Abstract】 Based on the analysis on the cable structure and the transmission theory of the electric signal transmitted in the cable, and according to the transmitting character of the electromagnetic wave, an accurate method which can detect the broken point in the cable without damage is put forward. Its functions include conducting state test, measurement and location of the broken point, and short-circuit point measurement. The cable state can be judged by voltage comparing method and indicated by light and sound. The distance from the short or open point to the testing point can be measured according to the reflecting principle of wave, and the open point (the broken point) can be accurately located by the principle of electromagnetic interaction.更多还原