目录i第一章绪论....................................................................................................................................11.1引言.....................................................................................................................................11.2发展过程.............................................................................................................................11.2.1传统技术的应用......................................................................................................11.2.2现代新技术的应用..................................................................................................41.2.3在我国电缆路径检测仪三个阶段..........................................................................51.3今后发展方向...................................................................................................................111.4本章小节..........................................................................................................................13第二章电缆路径检测的原理.......................................................................................................152.1音频信号发生器...............................................................................................................152.2音频信号接收...................................................................................................................172.3电缆路径识别的原理.......................................................................................................192.3.1带电电缆磁场分析................................................................................................192.3.2电缆路径探测的原理............................................................................................222.4本章小节...........................................................................................................................27第三章电缆路径检测仪的改进方法...........................................................................................293.1电磁法探测的原理..........................................................................................................293.2电缆路径仪的定位方法................................................................................................293.3电缆路径仪的测深方法................................................................................................303.4电缆路径检测仪的改进方案..........................................................................................313.5本章小节...........................................................................................................................37第四章电缆路径检测仪改进的硬件设计...................................................................................394.1信号预处理电路...............................................................................................................394.2A/D转换电路...................................................................................................................414.3显示电路...........................................................................................................................454.4扩展键盘电路...................................................................................................................484.5...
