In order to solve the heavy workload and the low efficiency of the train maneuver, one kind of train security alarm system based on GPS and INS technique was presented.

为了弥补目前火车车辆运行中人工统计调度工作量大、效率低等缺陷，提出了一种基于全球定位系统和惯性导航技术（GPS/INS）的火车安全告警系统的设计方案；

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This System had important meanings to check the feasibility and security of the train running under the train diagram and test the rationality of the scheme and the construction of new lines.

本系统对于检测列车在运行图下运行的可行性和安全性、测试方案的合理性以及新线建设具有重要意义。

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Research and improve the performance of auxiliary power supply system to ensure stability, security, power train research and design staff is the main task.

研讨和完好辅帮供电体解机能，确保稳固、安齐的列车供电非研讨和设计己员从要的义务。

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His nearly 100 patented creations include a dictionary, a train-switching system and, most recently, a service that turns an ordinary pager into a personal security device.

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