机载分布式采集系统的设计与实现

Design and implementation of airborne distributed acquisition system

在新型飞机试飞或者空中实验设备验证时,需要记录大量飞行过程中的各种模拟量、开关量、总线数据和图像等信息,这些数据将被用于开展事后分析工作,以便对实验结果进行评估。详细的数据信息记录将会越有利于相关模型的建立,然而受制于传统机载采集拓扑方式布局和总线带宽的限制,往往不能实现对多数据源进行高采样的信息收集、传输和存储。针对该问题提出一套基于可扩展机载分布式采集的系统设计方案,该方案支持扩展多达32个采集节点,同时在消除数据传输瓶颈的基础上,支持全路采样不间断存储时间约1 h。实验证明,该方案满足飞机或设备研发建模过程对于收集数据的应用需求。

During the testifying processes of new aircrafts and experimental equipments,a large amount of information should be recorded to support post-mortem analysis. The more detailed recordings are collected,the more accurate models will be established. But high-sampling-rate data from several sensors could not be recorded,transferred,and stored due to the storage and bus limits of existing airborne equipments. To solve this,a design scheme of extensible airborne distributed acquisition sys-tem is proposed in this paper. The system supports 32 individual sensors,and the sampling continuous storage for about one hour. The experiments show that the solution satisfies the requirements of data collection in design and development of new air-crafts or equipments.