手持式电缆故障测试仪系统实现  

Design and implementation of hand-hold cable fault detector

作　　者：张宣平[1] 张歆[1] 张小蓟[1] 

机构地区：[1]西北工业大学航海学院,西安710072

出　　处：《电子测量技术》2007年第11期87-89,103,共4页Electronic Measurement Technology

摘　　要：针对目前国内生产的电缆故障测试仪存在造价高、携带不便、需要交流供电、安全性差等缺点,研制出一种性能优良、功能相当、价格低廉、适合野外作业的手持式产品。该产品的系统实现基于脉冲反射原理,以TMS320VC5409和CPLD为处理核心,由低压脉冲产生器模块、高速A/D转换器模块、USB控制器等组成。本文详细介绍了该系统的工作原理、硬件与软件实现方案和实验测试分析。该仪器达到了一定的精度,能较好地适用于工程现场的测量应用。Given the current drawbacks existing in domestic cable fault location detector products such as high cost, alternating current-powered, low security, non-portable etc. , we develop a portable product enjoying better performances and functions like low cost and is suitable for field-work. The principle of this product is based on the reflection of waves. TMS320VC5409 DSP （digital signal processor） and EPM7256 CPLD （complex programmable device） are key chips of the system. The system consists of pulse-transmitter and receiver,DSP system,high speed ADC circuit module and USB （universal serial bus） control circuit module. The operation principle as well as the implement solution of hard/software of the system are described in detail. Experimental test indicates that this instrument can reach satisfying precision and works well in field engineering environment.

关 键 词：电缆故障 脉冲反射 TMS320VC5409 CPLD USB控制器 

分 类 号：TM93[电气工程—电力电子与电力传动] TM247[一般工业技术—材料科学与工程]