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    The design of communication for elevator landing calls based on multiple host structure
    电梯呼梯信号多主结构通信方式设计
    Comparing with some distributed control systems based on RS485 , the system based on CAN bus is better in the ways of good stability , high speed , multi-host structure .
    较之目前许多基于RS-485 创建的分布式控制系统而言,基于CAN总线的分布式控制系统在稳定性高、传输速度快、多主结构等方面具有明显的优越性。
    Based on the multiple host structure of the CAN bus,this paper presents the design of a node controller by using the P8XC592 single chip and the PCA82C250 CAN bus transceiver to realize the serial communication of the signals among an elevator machine room,landing calls and lift car.
    基于CAN总线多主结构方式 ,采用P8XC5 92单片机和PCA82C2 5 0总线收发器设计一种节点控制器 ,实现电梯信号在机房、轿厢、各层站之间的串行通信
    Bssed on multiple host structure of CAN bus, this paper brings forward a control module with singlechip P8XC592, CAN bus transceiver PCA82C250 to realize the serial communication, which transmits the control signals among elevator machine room, landing calls and lift car. And it is convenient for remote monitoring.
    基于 CAN总线多主结构 ,以 P8XC5 92单片机和 PCA82 C2 5 0总线收发器为主体构成控制模块 ,成功实现电梯机房、外呼和轿厢之间控制信号的串行通信 ,并可进行远程监控
    Various links,as mining,transporting and environment measuring,constitute an organic SCADA network supervised in ground control hub,with CAN bus noted for simple structure,easy connect,credible data,real-time messages,unrestricted node settings,common media and available multinodes.
    利用ControlArea Network(CAN)总线结构简单、连接方便、数据可靠性高、通信实时性强、节点设置不受限制、通信介质无特殊要求以及易实现多主结构的特点,将矿井生产、运输、环境检测等各个环节构成一个有机的监控和数据传输(SCADA)网络,并在地面调度中心实现集中监控。
    000/CAN in the field has multi-asterstructure, real-time capability and high reliability communication. Besides, the IPC that integrates monitor with control has rich resource. Thus, at the end the DCS (Distributed Control System) owns reliable opensystem architecture, quality real-time capability, high reliability,expedient operability.
    整个系统由于采用的3个现场控制器具有多主结构、实时能力和高可靠性通讯,而集中监控的IPC资源丰富,因而最终整个DCS(集散控制系统)开放性、实时性、可靠性、操作性好。
    The three field controllers of the system had multi-master structure, high real-time capability and high reliability communication. The whole and local designing of the system had the high ratio of capability and cost, and adopted high effective and highreliable algorithms, so the FDCS owned high real-time, efficiency, reliability, open, economy and expedient operability.
    整个系统由于采用的3个现场控制器具有多主结构、很强的实时能力和高可靠性通讯,系统总体设计和局部设计都保证了系统具有高的性价比,并且针对一体化氧化沟控制器采用了高效率和高可靠性的自适应控制算法,因而整个FDCS具有很好的实时性、高效性、可靠性、开放性、经济性和可操作性。
    2. Do research on PLC networking structure used in modern industrial control and expose it can't meet the command of high speed,realtime and mutihost in modern industrial control system .
    2、研究了现代工业控制的可编程控制器网络化结构,分析了现有可编程控制器采用传统串行方式联网通讯的不足,即难以适应现代工业控制系统对高速度、实时性和多主结构的要求。
    Nodes are connected to CAN bus through the adapter of intelligent network, resulting in timely, exact and reliable transfer of multifold main architecture network data.
    节点通过智能网络适配器连接到CAN总线上,从而实现了多主结构网络数据的及时、准确、可靠传递。
    Aiming at the deficiencies of the popular instrument buses in the communication mode, real time performance, interface complexity, etc. , the design scheme of a new, multi-master instrument bus, i.e. the network-stye instrument bus, is presented in this thesis, thanks to the newly developed technology of M-LVDS.
    针对目前各种常用仪器总线在通信方式、实时性、接口复杂性等方面的不足,本文在最新的多点低电压差分信令(M-LVDS,Multipoint Low Voltage Differential Signaling)技术的基础上,提出了一种新的多主结构的仪器总线,即网络式仪器总线的设计方案。
    The scheme that adoptes ADAM-5000/CAN in the field has the characteristics of multi-master structure, real-time capability and high reliability communication. Besides the IPC that integrates monitor with control has rich resource, thus the DCS system possesses reliable open system architecture, quality real-time capability, high reliability and expedient operability.
    由于该方案采用的现场控制器具有多主结构、实时能力和高可靠性通信,而集中监控的IPC资源丰富,故整个DCS系统开放性、实时性、可靠性和操作性良好。
 

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