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一 引言由于光纤在低损耗、大容量、保密、抗电磁干扰、抗地电流干扰等方面大大优于金属电缆,因而计算机本身及数据通信系统将是光缆潜在的最大用户。本文叙述一个可应用于电气化区段的铁路交通信号自动检测的微机光缆系统。它本质上是点-点以光缆为媒介的微机通信系统。铁路信号自动检测系统的特点是①要有很高的可靠性,以保证铁路信号正确检测和监督,②要有很强的抗电磁干扰的能力,③要有较简易的架设技术和施工费用低廉,④系统的信息传输码速相对较低,⑤检测系统必须满
I. INTRODUCTION Since optical fibers are much superior to metal cables in terms of low loss, large capacity, confidentiality, anti-electromagnetic interference and anti-ground current interference, the computer itself and the data communication system will be the largest potential users of optical fiber cables. This article describes a microcomputer cable system that can be applied to the automatic detection of railway traffic signals in the electrification zone. It is essentially a point - point to cable as a medium of computer communication system. Railway signal automatic detection system is characterized by ① must have high reliability, to ensure the correct detection and supervision of railway signals, ② have a strong anti-electromagnetic interference ability, ③ have a more simple erection technology and low construction costs , ④ system information transmission speed is relatively low, ⑤ detection system must be full