摘要随着全国铁路的提速、行车密度的增加以及气候原因，铁路技术人员在铁路线路上进行施工维护时，人员和设备将会收到严重威胁。因此在交叉道口、桥梁、隧道进行施工维护时，保证施工人员和设备的安全就成了最突出的问题，确保列车即将到达时及时给出报警信号用于人员和设备的撤离具有十分重要的意义。74910

本课题设计的铁路维修现场列车接近警示设备是一种基于单片机实现接收和发送报警指令、通过无线传输技术实现信号和指令发送的报警装置，该设备由信号采集模块、分机控制模块、主机控制模块、无线通信模块以及电源模块组成。列车通过时切割磁电式传感器的磁力线，滤波系统排除干扰信号后将滤波信号发送给分机控制单元，由分机控制单元判断为报警信号后通过无线通信模块将报警指令发给主机控制模块，主机接收指令后通过单片机处理使声光报警器工作，从而保证施工现场人员安全。

本文首先确定该报警设备的总体设计方案，其次分别从硬件和软件两部分进行设计，最后给出硬件电路图的设计和软件相关程序的编写。

该论文有图29幅，表4个，参考文献20篇。

毕业论文关键词：列车接近报警  单片机应用  无线通信技术  传感器

Design of Train Approaching Warning Equipment in Railway Maintenance

Abstract With the speeding-up of the national railway,the increase of traffic density and the climate change,personnel and equipment will be seriously threatened when the technician carry out the construction and maintenance of railway lines。 During the construction of crossing roads,bridge and tunnel,it is of great importance to guarantee the timely transmission of alarm signal for evacuation of personnel and equipment when the train is about to arrive in time。

The title of the design is the warning equipment for approaching train on the railway maintenance spot。This equipment transmits and receive signal or command by the technology of wireless transmission,based on the single chip microcomputer。 The device is composed of a signal acquisition module,an extension control module,a host control module,a wireless communication module and a power module。When the train passes and incises the magnetic induction line of the electromagnetic sensor,the filtering system can eliminate the interference signal and send the filtered signal to the control unit。The alarm signal is sent to the host control module through the wireless communication module after judging the alarm signal by the extension control unit。The host receives the instruction through the monolithic integrated circuit processing。Then it causes the sound and light alarm equipment to work to guarantee the construction site personnel safety。 

Firstly this paper determines the overall design of the alarm equipment,followed by design from the hardware and software in two parts。Finally this paper gives the design of the hardware circuit diagram and relevant software。 

This paper has 29 figures,4 tables and 20 references。

Key Words:Alarm of approaching train  Application of single chip microcomputer  Wireless communication technology  Sensor

目   录

摘要 I

Abstract II

图清单 IV

表清单 IV

变量注释表 V

1 绪论 1

1。1问题的提出 1

1。2国内外研究现状 1

1。3研究的目的和意义