Research Of Real-Time Communication Middleware For Distributed Integrated Modular Avionics

For fault-proliferation issues, and dynamic resource management and use of the different functionsof the same hardware resources currently exist between the IMA, distributed integrated modularavionics (DIMA) has become the direction of the avionics system architecture development. DIMAIntegrated avionics and joint IMA design features two structures, based on the core processing module(CPM) of computing resources, CPM is connected through a common network resources withperipheral input and output, to form a modular platform generic distributed consolidated. In thisintegrated modular avionics system, each sub-functions (such as navigation, identification, flightmanagement, air data, radar and optical detection, electronic warfare, fire control, task management,display control, and system software, etc.) are built above the generic function modules, functionmodules common airborne resources, based on a variety of software by loading each device tocomplete avionics functions. DIMA distribution obtained by physical fault isolation, resource sharingand improve communication between the resource requirements of the nodes, requiring a higherresponse speed, fault-tolerant characteristics.In order to build a data communications infrastructure between DIMA node communication tosolve existing bottlenecks, this paper DIMA multi-core applications made under the districtenvironmental-end real-time communication scheduling model with inter-partition communicationmodel, a scheduling model based on inter-district multi-core class boxing scheduling algorithms andpriority-based partition table inside the multi-task scheduling algorithm is used to ensure that it meetsnext DIMA environment and real-time fault-tolerant constraints. Finally, to achieve a real-timecommunications middleware can be used DIMA environment, and real-time communicationsmiddleware end-to-end schedulable analysis, middleware implemented on the basis of the abovealgorithm for the simulation and analysis comparing the results verify the validity of the algorithmand real-time communications middleware proposed availability.