摘要
为了准确检测并及时消除网络电缆常见故障,在时域脉冲反射原理的基础上提出了多次回波检测的测试方法,并应用该法设计了一种新型多功能网络电缆故障测试仪。测试仪以FPGA为核心,在一片FPGA芯片集成了系统全部功能,可以用于检测网络电缆的多种故障类型,并能对断路和短路故障位置精确定位。实验表明:仪器具有良好的精确度和线性度,是一种性能可靠的集成化测试仪器。
This paper introduced a new method of multi-reflected pulse waves sampling based on time domain reflectometry （TDR） , and designed a new kind of muhifunctional instrument for measuring faulted cables used in network. This instrument took FPGA as the hardware core and integrated all functions in a single chip of FPGA. It can detect multiform faults of network cables and locate the faults exactly. The experiments showed that the instrument has the advantages of good linearity and accuracy. It is an integrated and credible measuring instrument.
出处
《仪表技术与传感器》
CSCD
北大核心
2009年第4期118-120,共3页
Instrument Technique and Sensor
关键词
网络电缆
故障检测
测试仪
network cable
fault detection
instrument
