一种使用BU-65170内部RAM实现双缓冲的星载1553B总线数据传输技术
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摘要
星载1553B总线数据传输通常需要使用外部RAM缓存待发送数据,使用外部RAM带来系统功耗和面积的增加,也增加了系统的复杂性。提出了一种使用1553B芯片内部RAM实现双缓冲的数据传输方案。此方案采用FPGA作为主控芯片,BU-65170作为1553B总线控制芯片,利用BU-65170内部RAM的两个地址空间段构成双缓冲,避免使用外部RAM,简化了系统硬件设计,提高了系统的可靠性。对双缓冲区采取交替更新访问方式,实现了1553B总线数据的可靠传输。此方案已成功应用于星载GNOS掩星探测仪。
Generally an external RAM is used to cache data to be sent by 1553 B bus on payloads,but using external RAM will increase system power consumer and area,as well to system complexity. A data transmission scheme using 1553 B chip internal RAM for double-buffer is proposed. FPGA is the core control unit,and BU-65170 is the control chip of 1553 B bus. To simplify hardware design,not external RAM,but two different spaces in BU-65170 internal RAM are used for double-buffer,updated and accessed in return,to achieve 1553 B bus data transmission reliably. The scheme has been successfully applied to the payload of GNOS occultation Detector.
Generally an external RAM is used to cache data to be sent by 1553 B bus on payloads,but using external RAM will increase system power consumer and area,as well to system complexity. A data transmission scheme using 1553 B chip internal RAM for double-buffer is proposed. FPGA is the core control unit,and BU-65170 is the control chip of 1553 B bus. To simplify hardware design,not external RAM,but two different spaces in BU-65170 internal RAM are used for double-buffer,updated and accessed in return,to achieve 1553 B bus data transmission reliably. The scheme has been successfully applied to the payload of GNOS occultation Detector.
引文
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6 王冬伟,孙越强,杜起飞,等.基于BU-61580与USB的MIL-STD-1553B总线控制卡的设计.科学技术与工程,2012;20(11):2580—2585Wang D W,Sun Y Q,Du Q F,et al.A MIL-STD-1553B bus control card design based on BU-61580 and USB.Science Technology and Engineering,2012;20(11):2580—2585
2 黄敬涛,李丙玉,王晓东,等.某型红外探测系统中1553B总线通信设计与实现.电子测量技术,2015;38(9):143—146Huang J T,Li B Y,Wang X D,et al.Design mad realization of1553B bus communication in an infrared detection system.Electronic Measurement Technology,2015;38(9):143—146
3 刘骐铭,冯旭哲.星载子网1553B总线数据传输与管理.宇航计测技术,2015;35(5):64—68Liu Q M,Feng X Z.A data transmission and management scheme of inter-Satellite network on 1553B bus.Journal of Astronautic Metrology and Measurement,2015;35(5):64—68
4 张惠宇宸,王晓曼,刘鹏,等.基于FPGA的1553B总线的接口设计.吉林大学学报(信息科学版),2015;33(2):125—131Zhang H Y C,Wang X M,Liu P,et al.Design of 1553B bus interface based on FPGA.Journal of JiL in University(Information Science Edition),2015;33(2):125—131
5 李海军,牟俊杰,孙海文.高速1553B总线控制器通信管理系统设计.现代电子技术,2014;37(17):16—18Li H J,Mu J J,Sun H W.Design of communication management system for high-speed 1553B bus controller.Modern Electronics Technique,2014;37(17):16—18
6 王冬伟,孙越强,杜起飞,等.基于BU-61580与USB的MIL-STD-1553B总线控制卡的设计.科学技术与工程,2012;20(11):2580—2585Wang D W,Sun Y Q,Du Q F,et al.A MIL-STD-1553B bus control card design based on BU-61580 and USB.Science Technology and Engineering,2012;20(11):2580—2585