城轨交通列车速度检测静态测试信号源设计与实现

Design and implementation of static test set in speed testing of urban rail transit

在城轨列车车载ATP速度检测模块静态测试过程中,设备输入信号的精确度直接关系到车载ATP速度检测模块的测试效果,为此提出了一种利用FPGA实现高精度静态测试信号源的设计方法,首先分析了信号源结构与接口需求,然后以FPGA为核心进行了软硬件模块化设计和实现。试验测试结果表明,该静态测试信号源输出的信号具有较高的精确度。

In urban rail transit＇s Automatic Train Protection （ATP） systems,the accuracy of input signals directly affects the outcomes of the static testing process on the speed test module.To attain the required accuracy of the input signals,this paper proposes the use of FPGA in the static test process.We commenced by analyzing the signal source structure and interface requirements,then based on FPGA,the hardware and software was designed for implementation.The test results on this proposed system establish that,the output signals of the static test set possesses a higher accuracy.