基于虚拟仪器的航天器外热流软件设计

Design of External Heat Flux Software for Spacecraft Based on Virtual Instrument

摘要:

传统的航天器外热流测控系统处理大数据能力差,控制周期过长,控制精度差,程序维护性差,故障定位处理机制匮乏。为了解决上述问题,开发了一种基于虚拟仪器的航天器真空热试验外热流软件系统,使用了多线程低耦合的队列处理框架,采用了自顶向下逐步细化的软件整体分层设计,将各个功能独立模块化编写,方便开发人员并行开发,便捷的应对程控电源,温度采集设备更新所带来的软件维护需求,新增故障处理机制,迅速定位并自动修复故障,保证了试验长期运行的稳定性。软件同时具备试验数据管理、报表生成等功能,温度误差范围为±0.4 ℃,具有较高工程应用价值。

Abstract:

The traditional spacecraft external heat flow measurement and control system has poor ability to process big data ,long control cycle,poor control accuracy and poor program maintainability,which lacks of the fault location-processing mechanism.In order to solve the above problems,an external heat flow software system for spacecraft vacuum thermal test based on virtual instrument is developed,which uses the queue processing framework with multithreading and low coupling and adopts overall layered software design with top-down refinement.The software also programs each function module independly to convenice developers to maintenance procedure in parallel and update drivers of programmable power supply and temperature acquisition equipment. New fault handling mechanism was added,which locates and repairs faults quickly and automatically to ensure the stability of long-term operation of the test. Data management and report generation function are also included. Temperature error range is ±0.4 ℃,which has high application value.