基于LKJ实时信息的检测车工电供时空同步系统设计

Design of Spatiotemporal Synchronization System for Track Maintenance,Signaling&Communication,and Power Supply of Inspection Vehicles Based on LKJ Real-time Information

针对工电供检测车各类型检测数据,因时间、空间信息不统一而难以进行综合分析的问题,基于LKJ实时信息设计一种工电供时空同步系统。首先阐述该时空同步系统结构和实现原理;然后利用GPS/BDS提供的世界标准时间(UTC)信息对时钟进行校准,以实现时间同步;利用公里标获取算法计算检测车所处的精确位置;根据线路名匹配算法获取线路名,以公里标和线路名等信息组成空间同步信息;最后对工电供时空同步系统进行为期2年多的现场试用测试。试验结果表明,引入时空同步系统后,检测车的定位精度小于5m,工电供各检测系统输出的检测数据具备时间和空间位置的统一性。

In view of the difficulty to comprehensively analyze various types of detection data of railway maintenance,signaling&communication,and power supply of inspection vehicles due to the lack of unified time and space information,a spatiotemporal synchronization system based on LKJ real-time information has been designed.Firstly,the structure and implementation principle of the spatiotemporal synchronization system is explained.Then,the software utilizes the universal time coordinated(UTC)information provided by GPS/BDS to synchronize the clock.The precise kilometer mark of the inspection train is calculated using the kilometer mark acquisition algorithm,and the line name is obtained using the line name matching algorithm.The kilometer mark and line name information together form space synchronization information,thus realizing space synchronization.Finally,an on-site trial test that lasts for more than two years is conducted on the spatiotemporal synchronization system for maintenance,signaling&communication,and power supply.The experimental results show that the positioning accuracy of the inspection train is less than 5 m after introducing the synchronous system,and the inspection data output by railway maintenance,signaling&communication,and power supply inspection systems has the unity of time and space position.