摘要铁路信号的安全至关重要。而机车运行的重要基础是铁路信号具有很强的可靠性，铁路信号设备也是能提高机车各方面的效率和改善检测员工作环境的重要设备。铁路信号系统的首要功能是保证行车安全，而最近，随着“动车出轨”、“信号灯失灵”之类事故的发生，铁路的安全引起了人们的注意。所以，信号系统是否正常工作是十分重要的。81147

为此，有必要专门为动车配备一套专门的车载信号测试系统，来保证信号的正常工作。本文中的铁路信号测试系统采用了信号采集技术、嵌入式技术，能充分满足信号测试的的需求。设计的系统分为采集部分和数据处理部分，采集部分的系统能在线实时采集各类机车信号，如信号机信号、联锁设备信号、闭塞设备信号。通过采集系统采集了各种信号后，通过信号处理系统进行信号处理后，进行信号的存储、显示和传输，并分析信号和通过后台电脑运行仿真测试各个铁路运行区段的铁路信号是否正常没有故障。

铁路信号的测试，实际是对轨道电路的阻值和补偿电容达标与否进行测试，通过测试轨道电路阻值和补偿电容容量，比如接地线电阻，它作为轨道电路的重要参数，是保证通信、信号设备及人员安全的重要参数。测试补偿电容的作用是检查补偿电容是否达标，是否能抵消钢轨的感性，要保证轨道电路具有足够的距离用来传输和机车能收到及时可靠的信号，必需让铁路轨道的阻抗尽量呈阻性负载。

该论文有图22幅，表1个，参考文献29篇

毕业论文关键词  铁路信号  单片机  嵌入式系统  实时测试

Railway Signal Test System based on embedded technology

Abstract The important infrastructure of the railway signal equipment of railway transportation, And locomotive operation is the important basis of the railway signal has a strong reliability, railway signal equipment is also able to improve the efficiency of all aspects of the locomotive and improve the detection of the working environment of the important equipment。 The primary function of the railway signal system is to ensure traffic safety and, more recently, as the train went off the rails "," train collision or accident occurred railway safety has aroused people's attention。 So that signals whether the system is working properly is very important。

Therefore, it is necessary to specially for motor car is equipped with a set of special vehicle signal test system, normal work to ensure that the signal characteristics。 This paper uses the signal acquisition technology, embedded technology and development of railway vehicle for railway signal embedded test system, and it has a reliable, safe, powerful, can fully meet the needs of various types of test signals。 System design points for data acquisition and processing part, the acquisition part of the system can online real-time acquisition of locomotive signal, such as signal signal, signal interlocking equipment, occlusion device signal。 By collecting system collected all kinds of signals, through the signal processing system for signal After processing, signal storage, display and transmission, and analysis of the signal and analog simulation playback test of the various operational sections of the railway signal is in good condition。

Key words：railway signal  singlechip  embedded system  online test 

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摘  要 I

Abstract II

目  录 III

图清单 V

表清单 V

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