Integrated modular avionics system two-stage scheduling model and prototype platform

Abstract

The invention discloses an integrated modular avionics system two-stage scheduling model and a prototype platform, and belongs to the technical field of avionics. The two-stage scheduling model is divided into three categories of combination ways according to whether process time is continuous and according to a partition scheduling strategy and a process scheduling strategy, the optimization of unknown parameters is independently finished by aiming at each category of combination ways, and finally, a reasonable scheduling scheme and a reasonable scheduling Gantt chart are generated. On the basis of a classical partition and process scheduling model, an IMA (Integrated Modular Avionics) system two-stage scheduling model is expanded, the prototype platform has the advantages of complete structure and function, various two-stage scheduling models and any partitioning and process parameter can be conveniently verified, and a platform is provided for researching an efficient IMA two-stagescheduling strategy; and the prototype platform adopts a modular structure to support to add a new scheduling strategy and a new scheduling algorithm, each module can be conveniently replaced, and themodel exhibits good expandability.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a two-stage scheduling model and a prototype platform of a comprehensive modularized avionics system. Background technique [0002] With the rapid development of microelectronics technology, computer technology, and aviation technology, modularization and integration have become the development trend of avionics systems. As a new generation of avionics system, the integrated modular avionics system (Integrated Modular Avionics, IMA) gathers all computing resources, I / O resources and other system resources together and is managed by a software platform. This architecture based on resource sharing fundamentally solves the shortcomings of traditional avionics systems, mainly in the following aspects: 1) It can realize dynamic resource allocation according to demand, and reduce the redundancy of resource allocation to the greatest extent. 2) The isolation of software an...

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Problems solved by technology

So far, there are still deficiencies in the two-level scheduling model and algorithm of the IMA system: although ARINC653 stipulates the scheduling attributes of partitions and processes, it does not specify the scheduling schemes and methods of partitions and processes; some models proposed by researchers and algorithms can only be applied to some special cases; most scheduling models and algorithms can only be applied to the scheduling requirements of a single processor; most models and algorithms only stay at the level of theoretical thinking, lacking actual schedulability analysis and algorithm effectiveness verification

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