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A Partitioned Window Scheduling Method for Avionics System Based on ARINC653 Standard

A technology of avionics system and scheduling method, which is applied in the direction of resource allocation, multi-programming device, etc.

Active Publication Date: 2017-02-22
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For engineering applications, there is currently no complete method for the time slice scheduling design of multi-partition operating systems

Method used

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  • A Partitioned Window Scheduling Method for Avionics System Based on ARINC653 Standard
  • A Partitioned Window Scheduling Method for Avionics System Based on ARINC653 Standard
  • A Partitioned Window Scheduling Method for Avionics System Based on ARINC653 Standard

Examples

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Embodiment

[0073]The task cycle requirements of the electromechanical system of the aircraft are 50ms, 100ms, 200ms, 500ms, and 1s. After analyzing the system requirements of the designer, the software requirements of the electromechanical system are divided into: landing gear partition, hydraulic partition, fuel partition, environmental control Partition, power supply partition, lighting partition and IO partition provide 7 partitions. The cycle requirements for each partition are:

[0074] Landing gear partition: 50ms, 100ms, 200ms, 500ms;

[0075] Hydraulic partition: 100ms, 200ms, 500ms, 1s;

[0076] Fuel partition: 100ms, 200ms, 500ms;

[0077] Environmental control partition: 100ms, 200ms, 500ms;

[0078] Power supply partition: 100ms, 200ms, 500ms;

[0079] Lighting partition: 100ms, 200ms, 500ms, 1s;

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Abstract

The invention belongs to the embedded spatio-temporal partition technology and relates to an avionics system partition window scheduling method under ARINC653 standard. The method comprises by calculating a reference time slice Tp, splicing execution window time, main time frame scheduling time and system idle time of partitions in a building block mode in units of the reference time slice. Both partition cycles and main time frames are integral multiples of the reference time slice, the problem of scheduling sorting generated by different requirements of the partition cycles can be simplified. According to the avionics system partition window scheduling method under the ARINC653 standard, the cycle release point of every partition can be within the time window of the partition; two cycle control modes in partition scheduling, namely, a function partition control mode and an IO (input / output) partition control mode, are designed to be applied to different types of embedded systems.

Description

technical field [0001] The invention belongs to the embedded space-time partition technology, and relates to a partition window scheduling method of an avionics system under the ARINC653 standard. Background technique [0002] Aiming at the needs of portability, reusability and high reliability of the new aircraft avionics system, the American Aeronautical Electronics Committee proposed the application programming interface standard Arinc653 for the data integration of the new generation of aircraft in 1997. The Arinc653 specification defines the isolation of application programs and operating systems, and proposes the concepts of time isolation and space partition. The GJB5357-2005 standard proposed by our country in 2005 has also made a relevant definition for this concept. [0003] The ARINC653 operating system divides an exclusive memory space for each individual application partition through memory management, and the virtual memory size and the total dynamic memory si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/50
Inventor 刘冬蔡瑞宗王东王亮
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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