| 引用本文: | 吕良庆,安军社.1553B总线即插即用解决方案.[J].国防科技大学学报,2019,41(2):82-90.[点击复制] |
| LYU Liangqing,AN Junshe.Plug and play resolution on 1553B data bus[J].Journal of National University of Defense Technology,2019,41(2):82-90[点击复制] |
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| 1553B总线即插即用解决方案 |
| 吕良庆1,2, 安军社1 |
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(1. 中国科学院 国家空间科学中心 复杂航天系统电子信息技术重点实验室， 北京 100190;2. 中国科学院大学， 北京 100049)
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| 摘要: |
| 在传统1553B总线通信协议的基础上，通过增加初始握手过程和远置终端电子数据单的设计，形成具有即插即用特征的通信协议。基于这个协议，给出1553B总线控制器的即插即用设计方案，包括远置终端加入的总线表构建算法、管理数据结构和总线表动态调度的运行控制方式。总线表构建算法采用基于电子数据单的方法，根据远置终端的通信需求进行分析、计算、转换得到新的总线表。数据结构的思路是将总线表内容的分析提前到初始化时完成，以提高总线运行时的管控和数据交换的效率，以及方法的统一。总线表调度采用主总线表加插入消息的方式。对以上综合解决方案进行时间和适用场合的效果评估，结果表明该方案形成的总线周期、远置终端接入时间长度等指标达到了可以接受的程度，既保持了总线周期的稳定，又提供了即插即用所需要的控制灵活性。具有即插即用特征的1553B总线在CCSDS-SOIS架构中作为底层子网之一，为上层即插即用系统的构建提供了支撑。 |
| 关键词: 1553B总线 即插即用 航天器接口业务 电子数据单 空间数据系统 |
| DOI：10.11887/j.cn.201902013 |
| 投稿日期：2017-10-30 |
| 基金项目:空间科学先导专项总体基金资助项目(XDA04080000) |
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| Plug and play resolution on 1553B data bus |
| LYU Liangqing1,2, AN Junshe1 |
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(1.Key Laboratory of Electronics and Information Technology for Space Systems, National Space Science Center,Chinese Academy of Sciences, Beijing 100190, China;2.University of Chinese Academy of Sciences, Beijing 100049, China)
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| Abstract: |
| Based on the traditional 1553B data bus protocol, a new protocol with plug and play features was designed by adding remote terminal EDS (electronic data sheet) and procedure of transferring EDS. According to this protocol, the plug and play resolution of 1553B bus controller was designed, including constructing a bus list algorithm with the remote terminals plug in，management data structure, and dynamic operation and control bus list method. The constructing bus list algorithm uses remote terminal EDS to analyze, calculate and transform an old bus list to a new one, to satisfy remote terminals′ communication requirements. A management data structure is used for analyzing and storing bus list information during initialization phase， to increase efficiency of operation control and data exchanging. Dynamic operation and control bus list method adopts main bus list with plug in messages method. The timeliness and use cases of the resolution were evaluated. The results show that its time of bus cycle and time of remote terminal plugged into the system can be accepted. The resolution can remain stable in the communication process, and provide flexibility for plug and play needs. In CCSDS-SOIS architecture, 1553B data bus is one of the subnetworks on the bottom layer. With plug and play features, it can be extended to support constructing plug and play system in higher layer. |
| Keywords: 1553B data bus plug and play spacecraft onboard interface services electronic data sheet space data system |
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