星务1553B总线仿真板卡指令执行的高实时性设计
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摘要
为实现对某新型卫星总体1553B总线新的"1秒20帧,1帧50条消息"的"帧消息模式"的仿真,研究并实现了一种在满足"帧消息模式"的基础上,使1553B总线仿真板卡的指令执行时间延迟小于1ms的新方法;在分析原星务仿真系统实现机制的基础上,改进软件的整体设计,并在VxWorks下位机中设计了高精度时间获取模块与板卡控制模块等,实现了高精度、短消息传输执行时间的星务1553B总线仿真系统;结果表明:该系统不仅满足对"帧消息模式"的仿真,且将1553B板卡指令执行最大延迟时间缩短为0.713ms,相对于原星务仿真系统中4.5ms的最大延迟,指令执行精度提高了6.5倍以上,为被测设备的故障排查、问题定位提供准确的时间数据支持。
To realize the simulation of a new type of satellite system's " frame message model" of 1553 Bbus,a new 1553 Bbus house-keeping simulation system is designed and established.Through the analysis of the original implementation mechanism,changing the design of the simulation software and adding the high-precision time acquisition module and 1553 Bboard control module to VxWorks computer,a high real-time 1553 Bbus simulation systems is designed.It is showed that:The system can not only meet the " frame message mode" simulation,but the 1553 Bboard execution maximum delay time is reduced to 0.713 ms,which is shorter 6.5times than the original housekeeping simulation system maximum delay 4.5ms,and provides accurate time data support for the device under test.
To realize the simulation of a new type of satellite system's " frame message model" of 1553 Bbus,a new 1553 Bbus house-keeping simulation system is designed and established.Through the analysis of the original implementation mechanism,changing the design of the simulation software and adding the high-precision time acquisition module and 1553 Bboard control module to VxWorks computer,a high real-time 1553 Bbus simulation systems is designed.It is showed that:The system can not only meet the " frame message mode" simulation,but the 1553 Bboard execution maximum delay time is reduced to 0.713 ms,which is shorter 6.5times than the original housekeeping simulation system maximum delay 4.5ms,and provides accurate time data support for the device under test.
引文
[1]贺庚贤,李俊霖,宁飞.星务仿真系统高精度时标设计[J].电子测量与仪器学报,2014,28(8):827-835.
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[9]王蒙,张强成,李耀军.高速1553B总线通讯控制器测试验证系统研究[J].计算机测量与控制,2014,22(10):3253-3255.
[10]颜昌翔,赵昶宇,于平.1553B总线上消息的实时调度[J].光学精密工程,2010,18(3):732-740.
[11]马昕晖,杜胜,姚静波.基于PCI总线的动态测试系统软件设计研究[J].测试技术学报,2010,24(6):491-496.
[2]康凤举,段晓军,吴成富,等.基于VxWorks的无人机飞控计算机快速启动导引技术研究[J].计算机测量与控制,2010,18(6):1446-1448.
[3]周精华,翟正军.航电1553B总线监控系统的设计与实现[J].测控技术,2009,28(1):58-61.
[4]支超有,杨强,李霞.1553B数据总线仿真检测技术研究及应用[J].计算机测量与控制,2013,21(10):2632-2633.
[5]李珅,罗翠华,李昕.基于CAN总线星务仿真系统的设计与实现[J].测控技术,2011,30(12):58-60.
[6]吴传贵,陈海牛,黄明俊,等.基于多线程技术的1553B总线测试系统的设计与实现[J].测控技术,2012,31(10):85-87.
[7]胡君,宋启昌,陈茂胜,等.空间相机集成测试系统的时钟同步[J].光学精密工程,2010,18(6):1436-1443.
[8]支超有,杨强,李霞.1553B数据总线仿真检测技术研究及应用[J].计算机测量与控制,2013,21(10):2632-2633.
[9]王蒙,张强成,李耀军.高速1553B总线通讯控制器测试验证系统研究[J].计算机测量与控制,2014,22(10):3253-3255.
[10]颜昌翔,赵昶宇,于平.1553B总线上消息的实时调度[J].光学精密工程,2010,18(3):732-740.
[11]马昕晖,杜胜,姚静波.基于PCI总线的动态测试系统软件设计研究[J].测试技术学报,2010,24(6):491-496.