基于TDR技术的网络线缆故障测试模块设计

Design of the Test Module of Network Cable Fault Based on TDR Technology

随着计算机网络的发展和普及，网络安全对于各行各业显得尤其重要。当某些网络由于设计缺陷或者维护不当而发生故障时，往往还会带来巨大的经济损失甚至灾难性的后果。在这中间，大多数网络故障是由于线缆损坏或连接错误而发生的，这将会导致数据传输混乱，网络不通，从而严重影响到计算机通信网络的使用和安全。本文基于时域反射测量技术，提出了一种方便、快速而准确地检测网络线缆故障的方法，并详细介绍了线缆测试模块的设计和实现。

With the development and popularization of computer network, the network security is particularly important for the every walk of life. When some networks break down due to the design defects or inappropriate maintenance, it will frequently bring about large economic losses even disastrous aftermath. Among these faults, most of the network faults is resuhed from the cable＇s damage or its incorrect connection, it will lead to the data transmission confusion, even the communication interruption, thus the use and security of the computer communication network will be seriously influenced. Based on the Time Domain Reflectometry （TDR）, the paper puts forward a new method, which is applied to detect the location of the cable＇s fault point expediently, fleetly and pre- cisely and also elaborates the design and the implementation of the cable test modules.