基于虚拟仪器技术的铁路信号嵌入式测试系统

铁路信号对于铁路行车安全至关重要，为此有必要专门研发一套车栽的信号在线实时测试系统。综合运用虚拟仪器、嵌入式及无线接入技术开发的铁路信号车载嵌入式测试系统，具有实时、可靠、功能强大等诸多特征，完全能够满足信号测试的各种需求。该测试系统能在线实时采集各类机车信号、地面信号、轨道电路模拟信号等多种信息，处理后进行显示、存储，并用于分析和模拟仿真回放以测试各运行区段内铁路信号的完好性。就该嵌入式测试系统的硬件组成、软件结构、关键技术及特点进行了详细介绍。

Embedded Railway Signal Test System Based on Virtual Technique

Railway signal is vital to train operation safety. It is indispensable to develop a kind of real-time online test system for onboard railway signal. Through integrating virtual instrument, embedded system and wireless access technologies, a on-board embedded test system for railway signal was made. Being real-time, reliable, and powerful, the system could meet all demands of signal test. This test system could acquired different types of cab signals, ground signals and analog signals of track circuit online to display and store in a real time way. Simultaneously, the acquired signal data could be used to analysis and simulate the past test process and detect the in- tegrity of railway signal within each running section. The hardware and software architecture, key technologies, and functional features of the system are described in details.