嵌入式新型机载实时数据处理系统的设计与实现

Design and implementation of a new embedded airborne real-time data processing system

摘要:

为满足C919机上实时监控要求以及对试飞结果数据快速获取的迫切需求，针对现今机载网络数据包大流量、高速率的特点，通过对传统应用模式和系统结构的分析，指出传统机载实时数据处理系统在功能和性能上的不足，并提出了一种基于嵌入式结构、具有实时监控和重要参数快速处理复合功能的新型机载实时数据处理系统设计方法。相比基于工控机的系统结构，采用嵌入式结构和实时操作系统工作模式可极大提高系统多任务实时数据处理能力。同时，在系统中增加对重要参数在线处理和结果数据存储功能，可使试飞工程师在任务结束后的便可拿到结果数据，以解决以往地面数据处理等待时间长的难题。实际应用表明，新型系统很好满足了C919型号任务需求，可显著加快试飞决策和提高试飞效率。该设计方法也可为其它机载实时数据处理系统的设计提供方法借鉴。

Abstract:

Aiming at the requirement of real-time monitoring and the urgent need for the rapid acquisition of results during the flight test of C919, in view of the characteristics of high flow and high rate of today's airborne network data packets , on the analysis of traditional application patterns and system structures ,the shortcomings of the traditional airborne real-time data processing system in function and performance are pointed out and a new design method of airborne real-time data processing system based on embedded structure, real-time monitoring to process complex functions quickly is put forward. Compared with the system based on IPC, embedded structure and real-time operation system can greatly improve the system's multitask real-time data processing capability.At the same time, the online processing of important parameters and the storage of result data are added in the system, which makes the test engineer get the result data after the task immediately , so as to solve the problem of long waiting time for ground data processing. The practice shows that the new system meets the requirements of the C919’s test, and can significantly accelerate the flight test decision and improve the efficiency of the flight test. This method provides a reference for the design of other airborne real-time data processing systems.