列车自动测速报警系统的研制

Development of automatic train speed alarm system

近年来,随着列车性能的增强以及铁路路况的改良,列车的行驶速度已经有了很大程度的提升.但是,高速行驶的列车给铁路的维护带来了很多的麻烦.在铁路施工段偶尔会因为列车速度过快或者未减速,造成铁轨损坏、铁路工人受伤和交通事故等的发生.所以,我们必须开发列车自动测速与报警系统,安装在施工路段附近.每当列车经过测速传感器时,系统就会测出列车通过的速度,并通过其附带的无线发射器,将列车的速度传输给列车司机和施工路段的工人.列车司机接收到系统语音提醒后开始将列车速度降低到安全速度范围,行驶过施工路段,以免发生安全事故.本文研究了一种基于AT89C51单片机的列车自动测速报警系统,且对该系统的功用、硬件结构、测速电路以及系统软件等方面进行了一系列具体的讨论.

In recent years,with the enhancement of train performance and the improvement of railway conditions,the speed of the train has been improved significantly.However,high-speed trains bring a lot of trouble to railway maintenance.For example,in railway construction section,it occasionally happens track damage,injury to railway workers or traffic accidents just because the train speed is too fast or does not slow down.Therefore,an automatic train speed measurement and alarm system installed in the vicinity of the construction section become an necessity.When a train passes a speed sensor,the system measures the speed of the train passing through and sends the speed of the train to the driver and the workers on the construction section through its attached wireless transmitter.After receiving the voice reminder of the system,the driver begins to reduce the train speed to a safe speed and drives across the construction section to avoid safety accidents.Therefore,this paper studies a train automatic speed measuring alarm system based on AT89C51 microcontroller and discusses the function,hardware structure,speed measuring circuit and software of the system.