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Global task synchronization method of avionics system

An avionics system and task synchronization technology, applied in program synchronization, multi-programming device, program startup/switching, etc., can solve problems such as task out-of-sync, and achieve the effect of improving stability

Pending Publication Date: 2022-08-09
沈阳飞机设计研究所扬州协同创新研究院有限公司
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Problems solved by technology

This method solves the problem of out-of-synchronization of tasks between different processing nodes caused by the long-term operation of the system, and improves the stability of the avionics system

Method used

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  • Global task synchronization method of avionics system
  • Global task synchronization method of avionics system
  • Global task synchronization method of avionics system

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Embodiment Construction

[0014] In the aviation electronic system, each processing node has a system timer and is responsible for the task scheduling of the node. In the case of long -term operation, the system timer of each processing node will accumulate errors, causing the task between the processing nodes to be strolled, which will cause system failure. In order to solve the above problems, the present invention proposes a method of synchronization of the global task of an aviation electronic system. Each processing node uses the network timer to schedule the task of this node to avoid changing the task caused by the mission caused by each treatment node clock; The event triggers the application tasks of each processing node to prevent the task of the task caused by inconsistency due to inconsistent application tasks of each processing node. This method solves the problem of strolls between the tasks between different processing nodes that cause the system for a long time, and improves the stability o...

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Abstract

The invention discloses a global task synchronization method for an avionics system. The method is used for solving the problem of uncertainty caused by task out-of-step of a traditional avionics system. Based on the thought of unified scheduling of global tasks, a network clock is used as a clock for task scheduling of each processing node; interrupts are generated on each processing node in a timing manner by the network clock; and each processing node schedules the task of the node according to network timing interruption. And after system initialization is completed, task synchronous starting of each processing node is completed through a network event. According to the method, the problem of task out-of-step caused by asynchronous task scheduling clocks of all the processing nodes or difference of initialization time of all the nodes can be effectively solved, and the task scheduling certainty of the avionics system is improved.

Description

Technical field [0001] The present invention involves a task synchronization technology, which is specifically a method of synchronization of a global task synchronization of an aviation electronic system. Background technique [0002] Comprehensive core processor (ICP), as the core computing platform for the control and management of avionics system control and management, has the ability to process high -speed information processing and data computing, and provides FC network information interaction capabilities for the avionics system. The comprehensive core processor is mainly composed of multiple processing nodes. Use high -speed FC network interconnection between nodes. The operating system of the processing node according to the local timer scheduling task. In the case of long -term operation, the timer time difference of different processing nodes will have a certain time difference, which will cause the task between the processing nodes to lose and cause system failure. ...

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Application Information

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IPC IPC(8): G06F9/48G06F9/52
CPCG06F9/4806G06F9/4843G06F9/52
Inventor 范超段海军占水旺刘伟赵琳孟晨阳
Owner 沈阳飞机设计研究所扬州协同创新研究院有限公司
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