The invention discloses a vehicle-mounted safety computer communication data recording method, which relates to the technical field of train vehicle-mounted safety computers, and comprises the following steps: based on a multiprocessor architecture, two ARM cores with the same physical attribute are arranged in a CPU (Central Processing Unit), and a vehicle-mounted safety computer communication unit runs on the physical ARM core 0 of the CPU for communication; and the vehicle-mounted safety computer communication recording unit runs on the physical ARM core 1 of the CPU to carry out communication recording. Based on the SMP architecture, the communication unit and the communication recording unit of the vehicle-mounted safety computer are separated to different ARM cores to run in parallel, so that the operation resources of the CPU are increased, and the problem of incomplete communication data recording possibly caused by insufficient operation resources of the CPU is avoided; and meanwhile, the normal operation of the main service of the communication unit cannot be influenced by excessive consumption of CPU resources by the communication recording unit. According to the method, time-consuming operation is executed in a multi-task separation mode, and packet loss caused by the fact that data are not recorded in time due to the fact that a certain step is too time-consuming in serial single-task execution is avoided.
本发明公开了一种车载安全计算机通信数据记录方法,涉及列车车载安全计算机技术领域,包括:基于多处理器架构,CPU中设置有两块物理属性相同的ARM核,车载安全计算机通信单元运行于CPU的物理ARM核0上进行通信,车载安全计算机通信记录单元运行于CPU的物理ARM核1上进行通信记录。本发明基于SMP架构,将车载安全计算机通信单元与通信记录单元分离到不同的ARM核上并行运行,增加了CPU的运算资源避免了可能因CPU运算资源不足导致的通信数据记录不全问题,同时保障了通信记录单元不会因为过多的消耗CPU资源从而影响通信单元主业务的正常运行。本发明将耗时的操作采用多任务分离执行,避免了串行单任务执行因某一步骤过于耗时导致记录数据不及时造成丢包。
Vehicle-mounted safety computer communication data recording method
一种车载安全计算机通信数据记录方法
2025-04-11
Patent
Electronic Resource
Chinese
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