| Railway traffic in people life is a kind of both safe and fast traffic way, but if ignoredsafety issues, railway traffic also will give people with loss of life and money. So makesafety defense work particularly important. Now China’s stand inside crossing the car tomanagement way is still mostly in rely on a phone and work of the road looking notifystate, such as the weather is bad, or telephone lines don’t open, will exist hidden danger ofaccident, So level road crossing is emphasis and weak point, how to improve the safety ofrailway road crossing also become a highly importance subject.This paper expounds the present situation of domestic and the foreign railway levelroad crossing, analyses the important significance of railway alarm system, and gives thesystem composition and technical indicators and system working plane schemes. Paperused the sensor and single chip microcomputer, Design with AT89C51as the core of themain circuit system, in order to PIC16C71microcontroller as the core of the speech circuitsystem, completed the system hardware and software design. Realize the signal processing,break the detection, printer, keyboard input and digital display and so on various part offunction. This topic in the system hardware design process, according to the workenvironment, bad system, mainly to solve the equipment strong degree, operationreliability of system and for the wind and rain lightning protection ability of the naturaldisasters, at the same time in the software of also took strong anti-interference measures.And thus realizes the automatic alarm function railway level road crossing cars. Analysisshows that the system can better achieve the desired function, for railway crossingwatching personnel to provide timely and accurate information to the car, especially in thelow visibility weather conditions, this system advantage fully reflected. So the research anddesign of the system has important social significance and the practical application value. |
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