基于可编程SOC的多节点星上温度采集系统设计  

Design of multi-nodeacquisition system for on-board computer based on programmable SOC

作　　者：谭竹慧 李华旺[2] 常亮[2] 周华[2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海微小卫星工程中心,上海200120

出　　处：《电子设计工程》2016年第16期54-57,共4页Electronic Design Engineering

基　　金：中国科学院战略性先导科技专项(XDA04040201)

摘　　要：文中介绍了利用高集成度片上系统SOC型FPGA芯片Smart Fusion2和高精度温度传感芯片DS18B20设计的星上温度采集系统。本方案中FPGA仅需一个I/O接口,采用一根数据线与多个DS18B20芯片连接,极大程度降低了FPGA接口资源使用率。同时,采用FPGA芯片进行设计能减少星务软件工作量,提升整体CPU处理性能,在实时约束方面,采用FPGA还能提高整体实时性,降低CPU处理的严格约束。This paper describes the design of the satellite’s temperature acquisition system based on a highly integrated system SOC FPGA chip named SmartFusion2 and high precision temperature sensor chip named DS18B20. In this program, FPGA only uses one I/O interface, connecting to multiple DS18B20swith a data line,it greatly reduces the FPGA interface resource usage. At the same time, the design of FPGA chip can reduce the workload of the software, enhance the overall CPU processing performance, besides, the use of FPGA can also improve the overall real-time performance, reduce CPU processing strict constraints.

关 键 词：FPGA DS18B20 一线网 SmartFusion2 

分 类 号：TN99[电子电信—信号与信息处理]