摘要
为了提升加速度计的传输速率,加强传输的稳定性,设计了一种带有SpaceWire接口的三轴加速度计。给出了构建基于FPGA的通用性强的SOPC和NIOS II程序的设计方法,详细分析了SpaceWire母体协议DS解码方案的不足,研究并实现了一种新型DS解码算法,介绍了为增强三轴加速度计的可配置能力和通用性而开发的支持SpaceWire RMAP高层协议的函数库。最后与SpaceWire路由器、网络管理器搭建了试验网络,验证了本设计的加速度采集功能和多个加速度计之间的通信功能,证明本设计所采集的加速度数据的准确有效,设计的硬件和软件符合ECSS-E-ST-50-12C/51C/52C规范。
In order to increase the speed and stability of transmission, a triaxial accelerometer with SpaceWire interface is designed in this paper. This paper introduces the design method of a high universality FPGA based SOPC and NIOS 11 program,analyses the disadvantage of the old DS decode method specified in SpaceWire protocol, then studies and realizes a new DS decode algorithm. Meanwhile, a SpaceWire RMAP higher protocol function library, which improves the configuration ability and universality of the triaxial accelerometer, is also introduced. Finally, a SpaceWire test network is built up by the designed accelerometer and SpaceWire standard router and network manager, then the function of acceleration acquisition and communication between different accelerometers are verified by this network,as well as the validity and the accuracy of sampled acquisition data, and the compatibility with ECSS-E-ST-50-12C/51C/ 52C standards of the designed hardware and software are demonstrated in this paper.
出处
《电子测量技术》
2012年第1期25-27,30,共4页
Electronic Measurement Technology
基金
哈尔滨工业大学优秀青年教师培养计划(HITQMS.2009.023)资助项目
