【作者】 高波；

【导师】 陈唐龙；

【作者基本信息】 西南交通大学 ， 电力系统及其自动化， 2003， 硕士

【摘要】 随着我国电气化铁路的飞速发展和列车速度的不断提高，对电气化铁路的安全运营提出了更高的要求。接触网是电气化铁路重要的供电设备，也是最容易发生故障的设备，接触网事故已构成影响电气化铁路发展及安全运营的一个重要因素。为了保持接触网良好的运行状态，就必须对接触网设备的运行状态有充分的了解。接触网检测车是目前最常用的接触网检测设备，在接触网参数检测中得到了广泛的应用。 本文针对目前普遍采用的接触网检测车杆位测试系统存在的问题，提出了一种基于GPS的改进方案。运用全球卫星定位系统的原理，和数据库有效结合，可以进行初始站区、杆位识别和检测中站区、杆位自动校正，消除距离脉冲记数引起的累积误差。和目前广泛采用的接触网检测车杆位测试系统相比，其自动化和智能化程度大大提高，而且还可以提高杆位测试的精度，具有较高的应用价值和现实意义。 首先，根据杆位测试系统的实际需要，选择GPS-OEM接收板，并对其进行串口设置、输出记录数据格式选择和数据输出频率设定。在进行杆位测试前必须首先建立杆位原始坐标数据库，检测中把GPS-OEM接收板接收到的实时位置信息进行处理得到当前接触网检测车的位置坐标，与杆位原始位置数据库杆位坐标相比较、计算实现杆位识别。由于GPS存在卫星信号遮挡问题，而原有杆位测试系统在开始检测时需要人工输入站区、杆位初始位置等信息，在检测中出现站区、杆位错位时必须进行手动调节，无法自动消除累积误差，因此提出了一种杆位组合测试系统方案，并对几种可能的组合定位方式进行了比较。 利用VB 6.0实现了GPS—OEM接收板和工控机间的串行通信，设计了杆位坐标原始数据库建立程序和杆位判别程序，并实现了工控机间的网络通信。此外，还设计了杆位判别算法和组合定位算法，对本系统进行了现场试验，并在对试验数据进行误差分析的基础上，对系统做了进一步优化。更多还原

【Abstract】 With the rapidly develop of Electrified Railway, and the train runs more and more faster. The safety requirement of Electrified Railway becomes higher and higher. Overhead Catenary System (abbr. OCS) is vital to the Electrified Railway’s power supply, and causes trouble easily. The accident caused by OCS is an important part that affects the development and safety of Electrified Railway. In order to keep its perfect condition, we must learn a lot about the equipments of OCS. Catenary Inspection Car is the most useful equipment, it is widely used in OCS testing.Owing to the problem exists in the supporting pole number testing system of the Catenary Inspection Car, an improved method based on GPS is proposed. Using the theory of GPS and combining with database, it can eliminate the accumulative errors caused by pulse count. The improved method can not only identify the starting station and supporting pole number but also proofread the station and supporting pole number automatically in testing. Comparing to the supporting pole number testing system of the Catenary Inspection Car widely used at present, it can enhance the level of automatization and intelligence of the Catenary Inspection Car and improve the accuracy of supporting pole number testing. The method shows good value of application and practical significance.First, due to the actual requirement of supporting pole number testing system, the GPSCard is selected. Then, the GPSCard COM port’s asynchronous drivers is configured and the output logs and frequency is selected. Before the supporting pole number testing, we should set up the database of the original positional coordinate of every supporting pole. In the testing, by processing the Rail-time position information from the GPSCard we can obtain the coordinate of the Catenary Inspection Car at the moment. Comparing to the coordinate of supporting pole in the original database, the position of the Catenary Inspection Car can be obtained. In some certain areas, the GPSCard can’t receive signals. Furthermore, the original supporting pole number testing system also have some shortcomings, such as can’t identifythe starting station and supporting pole number, it must be input by hand. In the testing, when the supporting pole number is wrong, we have to correct it manually. By comparing of the different integrated positioning mode, a supporting pole number integrated testing system is proposed.The method to implement the communication between PC and GPSCard using MSComm control of VB 6.0 is carried out. The programs, which establish the original database and identify the supporting pole number is designed. The network communication through different computer is founded. Furthermore, the algorithm for integrated location and the supporting number identify is designed. Finally, some tests in the locale field were been done. Based on analyzing of the main errors, we made some improvements to this system.更多还原