摘 要安全问题是制约铁路进展的重要因素之一，尤其是在对列车运行速度要求日益提高的今日，安全问题更是显得尤为重要。平交道口是铁路安全运输问题的重点和薄弱点，因此如何提高铁路平交道口的安全性也就成为了一个极具重要性的课题。本课题针对我国铁路平交道口的现状，利用单片机技术开发了平交道口来车自动报警系统，采纳了可靠性高、价位低、普及程度高、利于基层技术人员掌握学习的 89C51作为控制芯片，利用了轨道传感器采集回来的车轮信息，准确地将来车信息通知道口值守人员及过往行人，大大减少了事故发生的隐患，为列车的安全高速运行提供了可靠的保障。针对系统工作环境的恶劣和工作的特别性，在系统硬件设计过程中，重点突出了系统运行的可靠性、设备的坚固程度和对雷电等自然灾害的防护能力，在软件的编制上也实行了有力的抗干扰措施，因此，本系统的讨论与设计具有重要的社会意义以及推广价值。关键词 运输安全，铁路道口，AT89C51，传感器，抗干扰AbstractThe traffic safety is one of the important elements for the rail traffic development, these days people want more and more fast training running speed, the traffic safety is becoming more important. Level road crossing is emphasis and weak point. So how to develop the security of the level road crossing is a very important problem.This article discusses the present situation of our rail level road crossing, use single-chip microcomputer system to design the coming vehicle automatic warning system for level road crossing. The core chip is 89C51 which has high reliability, low price and good universality. Most technicians can master it easily. The system gets the coming vehicles message, and gives notice to the crossing keeper and the people. So it can reduce the hidden dangers and provide the insurance for the rail traffic.Because of the bad running environment and working important, so we think much of the system running reliability, firmness of device and lightning-proof ability. Some measures also are take...
