公开(公告)号：US20160147568A1

公开(公告)日：2016-05-26

申请号：US14899633

申请日：2014-06-05

Applicant: FTS COMPUTERTECHNIK GMBH

Inventor： Stefan Poledna ,  Hermann Kopetz ,  Martin Glück

IPC: G06F9/48 ,  G06F1/14

CPC classification number: G06F9/4887 ,  G06F1/14

Abstract: The invention relates to a method for the time-correct data transfer between cyclic tasks in a distributed real-time system, which real-time system comprises a real-time communication system and a multiplicity of computer nodes, wherein a local real-time clock in each computer node is synchronised with the global time, wherein all periodic trigger signals zib for the start of a new cycle i are derived in each computer node simultaneously from the advance of the global time, wherein these periodic trigger signals start the tasks, and wherein a task reads the output data of the other tasks from local input memory areas, to which the real-time communication system writes, and wherein a task writes the result data of the current cycle to a local output memory area, which is associated with the communications system, at an a priori determined individual production instant zif before the end of a cycle, and wherein the schedules for the time-controlled communication system are configured such that the result data of a task present in the local output memory area is transported to the local input memory areas of the tasks requiring the data during the time interval , so that at the start of the following cycle this result data is available in the local input memory areas of the tasks that require this result data.

Abstract translation: 本发明涉及一种用于在分布式实时系统中的循环任务之间进行时间正确数据传输的方法，该实时系统包括实时通信系统和多个计算机节点，其中本地实时时钟 在每个计算机节点中与全局时间同步，其中用于新周期i的开始的所有周期性触发信号zib从全局时间的推进同时从每个计算机节点中导出，其中这些周期性触发信号开始任务，以及 其中任务从所述实时通信系统写入的本地输入存储区读取其他任务的输出数据，并且其中任务将当前周期的结果数据写入本地输出存储器区域，该本地输出存储器区域与 通信系统，在循环结束之前的先验确定的单个生产瞬间zif，并且其中时间控制通信系统的调度被配置成功 h，存在于本地输出存储器区域中的任务的结果数据被传送到在时间间隔期间需要数据的任务的本地输入存储器区域，使得在随后的周期开始 此结果数据可用于需要此结果数据的任务的本地输入存储器区域。