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摘 要铁路作为我国的交通支柱是必要的基础交通设施，是面向每个中国人的最普通的交通工具，同时也关系到人民的经济和生命安全。
铁路信号灯状态监测系统是关系到铁路运行安全与稳定的重要铁路信号系统。当前的铁路信号灯的结构大多是采用双灯丝冗余结构，双灯丝冗余结构可以保证铁路信号机的不间断工作，当信号机主灯丝出现故障断开时，副灯丝就会及时地切换到工作状态。存在的缺点是主灯丝切换到副灯丝时间较长，不知道故障信号灯位的具体位置地址，这样就不利于工作人员的维修，增加工作强度，故障的信号机也不能及时得到维修。69190
本文设计的铁路信号灯状态监测系统主要由以下几个重要模块组成：中央控制器、数据采集装置、灯丝转换器和模块电源电路。我们利用灯丝转换装置监测铁路信号灯的灯丝状态，然后通过数据采集装置将灯丝状态模拟信号集中起来并转换成数字信号，再通过RS485通讯模块将数字信号传送给室内的主控制器，最后再通过液晶显示屏将故障信息显示出来。
本文设计的系统结构精简、运行安全稳定、节约劳动力和铁路资源，实用性很高。该系统将传统的继电器技术和嵌入式技术有效的融合在一起，可以监测主、副灯丝的状态并把故障的信号机信息及时准确的传送到主控制器。本文通过对铁路信号灯监测系统的硬件和软件设计，保证系统的安全稳定，符合铁路信号系统的严格要求。
Design of railway signal lights monitoring system based on SCM
Abstract
As China's road transport is essential pillars of our nation's transportation infrastructure, it is for each Chinese person's most common means of transport, but also related to the economy and the lives of the people.
Railway signal condition monitoring technology is a relation to road traffic safety and patency of the important railway signaling technology. Existing rail lights are mostly dual filament structure redundant structure, when the main open filament, filament vice will switch to the working circuit. But the main and auxiliary filament switching time is longer, do not know the specific location of the fault signal bit address, so that is not conducive to the maintenance staff, increase the amount of work intensity, fault signal can not be repaired in time.
This design of railway signal condition monitoring system consists of a central controller, a data acquisition device, the filament converter module and a power supply circuit of several important modules. Filament by filament status monitoring signal conversion means, and then by the data acquisition means filament status information centralized and converted into digital signals are then transmitted to the interior of the master controller via RS485 communication module, and finally by the LCD display.
This design of the system lean, safe and stable operation, saving labor and railway resources, highly practical. The system will effectively blend traditional relay technology and embedded technology, can monitor the primary and secondary filament state and the failure of timely and accurate information signal is transmitted to the main controller. Based on the railway signal monitoring system hardware and software design to ensure system security and stability, in line with the stringent requirements of railway signaling systems.
Key word：Railway signal the filament converter monitoring system Single chip microcomputer
目 录
摘 要-I
AbstractII
目 录III
图清单IV
表清单IV
1 绪论1