基于主控同步的CAN总线多点实时数据采集技术  被引量:4

Multi-point real-time data capture technique for CAN bus based on master control synchronization

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作  者:王军[1,2] 曾献辉[1,2] 

机构地区:[1]东华大学信息科学与技术学院,上海201620 [2]数字化纺织服装技术教育部工程研究中心,上海201620

出  处:《微型机与应用》2016年第18期69-71,77,共4页Microcomputer & Its Applications

摘  要:RS-485总线与CAN总线是工业现场数据采集最常用的有线组网方式,它们均有各自的局限性。针对一类多节点网络的数据实时采集问题,提出了基于主控同步的CAN总线多点实时数据采集技术,将RS-485总线主控思想应用于CAN总线的数据通信中,通过对各节点发送数据时间的同步,有效地避免了节点间数据冲突问题。实验结果证明了该方案能有效地提高数据传输的实时性和可靠性,解决了CAN总线访问冲突。RS-485 bus and CAN bus are the most commonly used wired networking mode for data capturing in the industrial field,but both have their own limitations. Aiming at the problem of real-time data capturing on multi-point network,this paper proposes multi-point real-time data capture technique for CAN bus based on master control synchronization,which applies the thought of the RS-485 bus master control to data communication of CAN bus. It can effectively avoid data conflicts by the time synchronization of sending data to every point. The experimental results show that the new method can greatly improve the efficiency and reliability of data transmission and avoid access conflicts of CAN bus.

关 键 词:数据采集 CAN总线 主控同步 实时性 

分 类 号:TN919[电子电信—通信与信息系统]

 

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