一种接触轨带电显示装置设计.doc
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- 一种 接触 带电 显示装置 设计
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1、摘 要随着经济的发展,人民生活水平的提高,城市规模越来越大,人口越来越多,小汽车数量不断快速增加,城市交通拥堵加剧,尤其是近几年北京、上海等城市的堵车问题,更是严重。面临城市的不断发展、交通流量大幅度增加,交通拥挤不断加剧的局面,各大城市都在采取各种措施解决城市交通问题。在此情况下,发展地下轨道交通是城市发展的必然趋势,在城市道路被各种车辆相互堵塞的情况下,轨道交通车辆能顺利通行,地铁轨道交通技术在公共交通体系中的地位愈来愈高。城市轨道交通接触轨现在基本都采用直流供电的方式,直流电压现在也多选取直流1500v,所以本文以直流1500接触轨系统为重点。本文首先简单的介绍了直流供电牵引技术,然后分
2、析了电压测量原理,确定了非接触式电压测量仪静电电压表,然后分析三种静电系测量系统模型和各种非接触式测量方法优缺点的基础上,总结选择最合理方案,进而才可以设计出最佳的非接触式接触轨电压检测方案,配合通信系统,显示装置等就构成了接触轨带电显示装置的设计。非接触式带电显示装置中,主要有静电计探头、耦合器、隔离放大电路、AD转换器和通信系统等等,然后对他们进行器件选型,选取最优。最后是整个方案设计的保护装置和一些其他的电路。整个装置具有带电检测、显示、报警和通信的功能。关键词:直流牵引供电系统; 静电计; 隔离放大电路; AD转换器; ABSTRACTWith economic development
3、 , peoples living standards improve, more and more large- scale urban population , more and more rapidly growing number of cars increases , increasing urban traffic congestion , especially in recent years, the problem of traffic jams in Beijing, Shanghai and other cities even more serious. Faced wit
4、h the continuous development of the city, a significant increase in traffic , congestion escalating situation, major cities are taking various measures to solve urban traffic problems. In this case , the development of underground rail transport is the inevitable trend of urban development , in the
5、case of urban roads were clogged with each other all kinds of vehicles , rail vehicles can smoothly pass, Metro Rail Transit technology position in the public transport system in the increasingly highUrban Rail Transit contact rail DC power supply is now basically the way , the DC voltage is now mul
6、ti- select DC 1500v, So this article, with emphasis on the dc 1500 contact rail system . Firstly, a brief introduction of the DC traction power supply technology , and then analyzes the voltage measurement principle , to determine the non-contact voltage measuring instrument - electrostatic voltmete
7、r , And analyzes three kinds of electrostatic measurement system model and a variety of strengths and weaknesses of the non-contact measurement method, based on the summary to choose the most reasonable solution, and then we can design the best non-contact voltage detection scheme contact rail in wi
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