| 小卫星模拟系统中多路串行通信系统设计 |
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| 引用本文： | 张文凯,关桂霞,赵海盟,王明志,吴太夏,晏磊.小卫星模拟系统中多路串行通信系统设计[J].计算机应用,2013,33(12):3477-3481. |
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| 作者姓名： | 张文凯 关桂霞 赵海盟 王明志 吴太夏 晏磊 |
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| 作者单位： | 1. 空间信息集成与3S工程应用北京市重点实验室(北京大学)，北京 100871；2. 首都师范大学 信息工程学院，北京 100048；3. 中国科学院 遥感与数字地球研究所，北京 100094 |
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| 基金项目： | 国家科技支撑计划项目;国家自然科学基金资助项目;北京市自然科学基金资助项目 |
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| 摘 要： | 针对小卫星模拟系统中星载计算机与相机载荷通信及控制问题，研发多路串行通信控制系统。系统设计采用Host-Target模式，在星载计算机(Host)端软件实现多路通信管理子系统，设计基于现场可编程门阵列(FPGA)的相机载荷分控单元(Target);同时，在RS-232通信协议基础上提出一种多路串行通信协议，完成星载计算机与相机载荷分控单元的通信控制。用SignalTapⅡ逻辑分析工具捕捉FPGA内部实时信号对系统性能进行验证，结果表明该系统可对单一或者多路相机载荷进行灵活控制与管理。
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| 关 键 词： | 小卫星模拟系统 相机载荷 RS-232通信协议 现场可编程门阵列 多路控制 |
| 收稿时间： | 2013-06-03 |
| 修稿时间： | 2013-07-30 |
Design of multi-serial communication for micro-satellite simulation system |
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| ZHANG Wenkai GUAN Guixia ZHAO Haimeng WANG Zhiming WU Taixia YAN Lei.Design of multi-serial communication for micro-satellite simulation system[J].journal of Computer Applications,2013,33(12):3477-3481. |
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| Authors: | ZHANG Wenkai GUAN Guixia ZHAO Haimeng WANG Zhiming WU Taixia YAN Lei |
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| Affiliation: | 1. Beijing Key Lab of Spatial Information Integration and 3S Applications (Peking University), Beijing 100871, China2. College of Information Engineering, Capital Normal University, Beijing 100048, China3. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China |
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| Abstract: | A communication system with several serial ports was developed to realize the communication between On-Board Computer (OBC) and cameras in micro-satellite simulation system. The system was designed in Host-Target model. The Host sever managed the multiplex communications between the host and its clients. It also sent out trigger signal to control five cameras through a Field Programmable Gate Array (FPGA) chipset. In addition, a multiplex serial communication protocol based on RS-232 protocol was proposed to complete the communication. The logic analytical tool SignalTapⅡ was used to capture the real-time signal of FPGA to verify the performance of the system. The results indicate that the system can control and manage a single camera or multiple cameras flexibly. |
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| Keywords: | micro-satellite simulation system camera load RS-232 communication protocol Field Programmable Gate Array (FPGA) multiplex control |
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