基于ARM的便携式转辙机测试仪研制

【作者】 段鹏；

【导师】 王安；

【作者基本信息】 西北工业大学 ， 控制理论与控制工程， 2006， 硕士

【摘要】 电动转辙机是铁路系统中常用的一种重要电气信号设备。它是以电动机为动力,经减速器变速后来改变道岔的开通方向,并能够反映道岔的状态位置。便携式电动转辙机测试仪是一种专门用来在现场对电动转辙机进行检测的测试设备,其测量对象为电动转辙机动作过程中的输出力和电机电流。 本论文首先对基于ARM的便携式电动转辙机测试仪的各种设计要求进行了分析,包括了仪器的精度以及各种使用功能要求。然后提出了测试仪的总体设计方案:从逻辑上将仪器划分为三个层次:硬件电路层、接口层和软件应用层,依次实现仪器硬件电路的设计、驱动程序的设计和功能软件的设计。 在本论文的设计中,仪器采用了“定时器中断”来保证对被参数进行实时、有效地测量;使用了μC/GUI来编写友好的图形用户界面;用软件实现了文字信息——包括数字、字母和汉字的输入;并在仪器上构建了FAT文件系统,使其可以像U盘一样方便地通过USB接口与PC机之间进行数据通信。 经过验证测试证明,所设计测试仪的测量精度达到技术指标的规定;能够实时地完成对被测参数的测量,测量波形不失真;并且满足了设计要求中所提出的各项操作功能。更多还原

【Abstract】 The electric point switch is an important electrical signal equipment that is often used in train system. It gets power from a electromotor, changes its velocity via retarder and shift the opening direction of the fork, and reflect the situation position. The portable electric point switch tester is one test equipment that is specially used to test the electric point switch on the spot, the measuring objects are the output power and the electric machine current in the working process of the electric point switch.This thesis firstly analyzes the design specification of the electric point switch based on ARM, including the accuracy of the equipment and its various application functional purposes. And then puts forward the overall design plan of the tester: the equipment is divided into three arrangements, including hardware circuit level, interface level and software application level, realize the design of hardware circuit, driver program and functional software in course.In the design of this thesis, the tester applies time-interrupt to ensure the measuring objects is measured in real time and effectively;uses μC/GUI to make a friendly graph user interface;realizes the input of word information by software, including the input of number, letter and Chinese characters;owns FAT16 file system, which makes it do data traffic through USB interface with PC as a Flash Disk.It has been approved that the accuracy of the designed tester matches the prescript of required technological standard. It can finish the measurement to the measuring objects in real time, and keep measured wave form undistorted. It also achieves all the required functions.更多还原