摘要
针对移动场合中多数据源的数据采集问题,综合考虑多数据源的带宽需求和元器件性价比等因素,提出一种基于时分复用技术的多源数据采集系统设计方案。根据采集系统内数据总线挂载多个USB HOST控制芯片的结构特点,提出一种数据传输的直传方法,数据包可不经过MCU的缓存,直接从数据信息设备传输至数据存储设备,提高系统数据传输的速率。仿真结果表明,数据设备中的数据能正确高效地传输至存储设备中。
Aiming at the problem of the data acquisition requirements of multiple data sources in the moving occasions ,factors such as bandwidth requirements of multi-source and component cost were taken into consideration ,a project of multi-source data acquisition system based on time division multiplexing technology was proposed .Based on the characteristics of multiple USB HOST control chip used in the system ,a new method of data directly transmission was proposed ,which allowed data packet trans-mitting from information device to storage device without storing in the cache of MCU ,improving the rate of data transmission in the sys-tem .Results of the simulation indicate that the data in device are transferred to the storage device correctly and efficiently .
出处
《计算机工程与设计》
CSCD
北大核心
2014年第10期3404-3409,共6页
Computer Engineering and Design
关键词
数据采集
嵌入式系统
时分复用
数据直传技术
通用串行总线
data acquisition
embedded system
time division multiplexing
data directly transmission technology
USB
