皮卫星多传感器同步采集系统  

Multiple sensors synchronous acquistion system of pico-satellite

作　　者：张佳慧[1] 王慧泉[1] 金仲和[1] ZHANG Jia-hui;WANG Hui-quan;JIN Zhong-he(Micro-satellite Research Center,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学微小卫星研究中心,浙江杭州310027

出　　处：《传感器与微系统》2018年第8期85-87,共3页Transducer and Microsystem Technologies

基　　金：国家杰出青年科学基金资助项目(61525403)

摘　　要：针对多传感器实时同步采集的任务需求,基于数字信号处理(DSP)+现场可编程门阵列(FPGA)架构设计内部集成电路(I2C)总线与同步启动信号相结合的自定义通信协议,通过虚拟直接存储器存取(DMA)与实时中断响应系统设计,实现数据采集、数据存储以及数据下传过程同步进行的皮卫星高精度多传感器实时同步采集系统。实测结果表明:系统实现了84路传感、100 Hz采样,同步精度优于10μs,系统已应用于某型号皮卫星。Aiming at task request of muhiple sensors reahime and synchronous acquisition, a high-precision muhi- sensor realtime and synchronous acquisition system of pico-satellite designed, based on custom commumication protocol, combining architecture design of digital signal processor （DSP） and field programmable gate array （FPGA） ,inter-integrated circuit （I2C） bus with synchronous start signal, through virtual direct memory access （DMA） and real-time interrupt response system design, data collection, storage and sending can be realized synchronously. The test result shows this system can aquire 84 sensors synchronously in a frequency of 100 Hz and its synchronous precision is prior to 10 μs, this system has already been applied on some pico-satellite.

关 键 词：皮卫星 多传感器 同步采集 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计]