New integrated modular avionics system architecture

Abstract

The embodiment of the invention discloses a new integrated modular avionics system architecture, belonging to the technical field of avionics. The architecture comprises an avionics core resource subsystem, an avionics information platform subsystem, an avionics data network subsystem and a data conversion subsystem, wherein the avionics core resource subsystem is used for providing calculation resources for a resident application of an aircraft control domain system; the avionics information platform subsystem is used for providing calculation resources for a resident application of an aircraft information service domain system; the avionics data network subsystem is respectively connected with the avionics core resource subsystem and the avionics information platform subsystem, and is used for transmitting interactive data between the avionics core resource subsystem and the avionics information platform subsystem; and the data conversion subsystem is connected with the avionics data network subsystem and is used for providing signal conversion functions for an aircraft system so as to realize the inter-conversion between non-ARINC664 signals and ARINC664 signals. According to the embodiment of the invention, the function residence is carried out in different ways according to different functional domains to which each resident function belongs, so that the comprehensiveness and integration degree of the aircraft system can be increased, and meanwhile, the system performance can be improved.

Description

technical field [0001] The invention relates to the technical field of avionics, in particular to a novel comprehensive modular avionics system architecture. Background technique [0002] Integrated Modular Avionics System Architecture (Integrated Module Aviomics, IMA, modularized integrated avionics system) is a comprehensive avionics system architecture used by typical aircraft in service. B787, A380 and COMAC's C919 aircraft avionics systems all use IMA architecture. The B787 aircraft adopts the common core system (Common Core System, CCS) as the nerve center of the aircraft, uses the 10 / 100Mbps AFDX bus as the data transmission "central" of the aircraft avionics system, and uses the remote data concentrator (Remote Data Concentrator, RDC) as the Data acquisition and data conversion equipment to achieve a high degree of integration of avionics and aircraft functions. The common core system consists of two Common Core Resource (CCR) cabinets, each CCR cabinet consists of...

AI Technical Summary

Problems solved by technology

[0004] Existing comprehensive modular avionics system architecture, all aircraft resident functions (development support levels are DAL A, DAL B, DAL C, DAL D, DAL E) reside in the IMA processing cabinet (B787 aircraft and C919 The aircraft are all resident in the GPM of the CCR cabinet, and the A380 aircraft is completed by the processing unit in the CPIOM), because the DAL A-level resident application has high requirements for aircraft safety, and the DAL E-level resident application has no impact on aircraft safety. According to the existing design architecture, these five levels of resident functions all reside in the hardware environment designed with the same architecture, which will inevitably increase the complexity of software design and the probability of software errors, sacrificing the overall performance of the system; With the continuous development, the avionics system is becoming larger and more integrated. Using the existing Integrated Modular Avionics System (IMA) architecture, the allocation of core processing cabinet resources will become more and more complex. With the resident As the number of applications increases, the overall performance of the system will also be affected. Since resident applications of different levels reside in the same cabinet at the same time, the coupling between systems is close, and the probability of system errors will increase.

[0005] In the process of realizing the present invention, the inventors have found that there are at least the following problems: the integrated modular avionics system architecture adopted by the A380 aircraft has a relatively low degree of integration, and each CPIOM module does not realize the sharing of resources; The comprehensive modular avionics system architecture adopted has a large degree of coupling between systems, which is likely to cause resource competition and excessive coupling problems

This increases the software design complexity of the hardware platform itself and the probability of software errors, sacrificing the overall performance of the system

At the same time, with the continuous development of technology, the avionics system is becoming larger and more integrated. Using the existing integrated modular avionics system (IMA) architecture, the allocation of core processing cabinet resources will become more and more complicated. With the increase of resident applications, the overall performance of the system will also be affected. Different levels of resident applications reside in the same cabinet at the same time. The coupling between systems is close, and the probability of system errors will increase.

Images