计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2014年
10期
3404-3409
,共6页
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
數據採集%嵌入式繫統%時分複用%數據直傳技術%通用串行總線
수거채집%감입식계통%시분복용%수거직전기술%통용천행총선
data acquisition%embedded system%time division multiplexing%data directly transmission technology%USB
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。
針對移動場閤中多數據源的數據採集問題,綜閤攷慮多數據源的帶寬需求和元器件性價比等因素,提齣一種基于時分複用技術的多源數據採集繫統設計方案。根據採集繫統內數據總線掛載多箇 USB HOST 控製芯片的結構特點,提齣一種數據傳輸的直傳方法,數據包可不經過MCU的緩存,直接從數據信息設備傳輸至數據存儲設備,提高繫統數據傳輸的速率。倣真結果錶明,數據設備中的數據能正確高效地傳輸至存儲設備中。
침대이동장합중다수거원적수거채집문제,종합고필다수거원적대관수구화원기건성개비등인소,제출일충기우시분복용기술적다원수거채집계통설계방안。근거채집계통내수거총선괘재다개 USB HOST 공제심편적결구특점,제출일충수거전수적직전방법,수거포가불경과MCU적완존,직접종수거신식설비전수지수거존저설비,제고계통수거전수적속솔。방진결과표명,수거설비중적수거능정학고효지전수지존저설비중。
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 .