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    • 2. 发明申请
    • DISTRIBUTED EQUIPMENT ARBITRATION IN A PROCESS CONTROL SYSTEM
    • 分布式设备在过程控制系统中的仲裁
    • US20100185801A1
    • 2010-07-22
    • US12356385
    • 2009-01-20
    • Godfrey R. SherriffGary K. Law
    • Godfrey R. SherriffGary K. Law
    • G06F13/18
    • G05B19/41865G05B2219/32079G05B2219/32328Y02P90/20
    • A distributed process control equipment ownership arbitration system and method for arbitrating equipment ownership conflicts are disclosed. Individual control modules representing various process control entities within a process control system define a plurality of lists or queues for storing equipment arbitration information. Requests by one process control entity to acquire ownership over another process control entity are represented by an arbitration token that represents the ownership relationship sought by the acquiring process control entity. Copies of the arbitration token are communicated between the respective control modules and stored in the various arbitration queues defined by the control modules, depending on the status of the acquisition request. Upon receiving an acquisition request from another process control entity, the control module associated with the targeted process control entity decides whether the targeted process control entity is available to be acquired by the requesting control entity based on arbitration rules that are embedded within the control module itself. Once the targeted process control entity has been acquired by another process control entity it may not be acquired by any other process control entity until it has been released by the acquiring process control entity.
    • 披露了分布式过程控制设备所有权仲裁系统和仲裁设备所有权冲突的方法。 表示过程控制系统内的各种过程控制实体的各个控制模块定义用于存储设备仲裁信息的多个列表或队列。 一个过程控制实体对另一过程控制实体获取所有权的请求由代表获取过程控制实体所寻求的所有权关系的仲裁令牌来表示。 仲裁令牌的副本在相应的控制模块之间通信,并且根据获取请求的状态存储在由控制模块定义的各种仲裁队列中。 在从另一个进程控制实体接收到获取请求时,与目标进程控制实体相关联的控制模块基于嵌入在控制模块本身内的仲裁规则来决定目标进程控制实体是否可被请求控制实体获取 。 一旦目标过程控制实体已被其他过程控制实体获取,则在获取过程控制实体已被释放之前,其可能不被任何其他过程控制实体获取。
    • 5. 发明授权
    • Digital video recording and playback of user displays in a process control system
    • 在过程控制系统中数字视频录制和回放用户显示
    • US09042708B2
    • 2015-05-26
    • US12415732
    • 2009-03-31
    • John M. CaldwellMarty J. LewisGary K. Law
    • John M. CaldwellMarty J. LewisGary K. Law
    • H04N5/92G05B23/02
    • G05B23/0264
    • A process control system user display provides a display image containing control system information. The system may include a digital recording module including an image capture module for making a real-time digital recording of at least a portion of the display image, the image capture module buffering a terminal portion of the real-time digital recording. A storage module may store at least a portion of the real-time digital recording. A real-time digital recording may contain at least a portion of the display image, wherein, at any particular time, the real-time digital recording includes information from the control system for a predetermined duration proximate the particular time, and at least a portion of the real-time digital recording may be stored. A desired portion of the digital recording may be played back, optionally with process control system event and/or continuous history.
    • 过程控制系统用户显示器提供包含控制系统信息的显示图像。 该系统可以包括数字记录模块,其包括用于对显示图像的至少一部分进行实时数字记录的图像捕获模块,图像捕获模块缓冲实时数字记录的终端部分。 存储模块可以存储实时数字记录的至少一部分。 实时数字记录可以包含显示图像的至少一部分,其中在任何特定时间,实时数字记录包括来自控制系统的信息在特定时间附近的预定持续时间,以及至少一部分 可以存储实时数字记录。 数字记录的期望部分可以被播放,任选地具有过程控制系统事件和/或连续历史。
    • 7. 发明申请
    • Integrated unified threat management for a process control system
    • 为过程控制系统集成统一威胁管理
    • US20110072506A1
    • 2011-03-24
    • US12889235
    • 2010-09-23
    • Gary K. LawNate KubeRobert K. HubaBrandon HiebDavid R. DenisonCheyenne Hernandez
    • Gary K. LawNate KubeRobert K. HubaBrandon HiebDavid R. DenisonCheyenne Hernandez
    • G06F21/00
    • H04L63/1416H04L63/0227
    • A Unified Threat Management System (UTMS) for securing network traffic in a process control system may comprise network devices configured to receive network traffic related to the process control system and including a ruleset received from an external source. The ruleset may include one or more rules defining a condition to accept or deny the network traffic received at the network device. The state of the network device may be integrated into the process control system as a process control object or variable, thus allowing the state and other UTMS and component network device parameters and variables to be displayed to an operator at a workstation within a graphical process control system environment. The network devices may also communicate with a perpetual service that proactively supplies the devices with rulesets to meet the latest security threats, threat patterns, and control system vulnerabilities found or predicted to exist within the network.
    • 用于保护过程控制系统中的网络流量的统一威胁管理系统(UTMS)可以包括被配置为接收与过程控制系统相关并且包括从外部源接收的规则集的网络业务的网络设备。 规则集可以包括定义接受或拒绝在网络设备处接收的网络业务的条件的一个或多个规则。 网络设备的状态可以作为过程控制对象或变量集成到过程控制系统中,从而允许将状态和其他UTMS和组件网络设备参数和变量显示在图形过程控制中的工作站上的操作员 系统环境。 网络设备还可以与主动向设备提供规则集的永久服务通信,以满足网络中发现或预测存在的最新安全威胁,威胁模式和控制系统漏洞。
    • 8. 发明授权
    • Communication bus suitable for use in a hazardous area of a process plant
    • 通信总线适用于过程工厂的危险区域
    • US07684167B2
    • 2010-03-23
    • US10675446
    • 2003-09-30
    • Kent A. BurrGary K. LawTom Aneweer
    • Kent A. BurrGary K. LawTom Aneweer
    • H02H1/00
    • H02H9/008
    • A communication bus suitable for use in a hazardous area of a process plant includes a first transmission path adapted to communicate electrical signals in a first direction, and a second transmission path adapted to communicate electrical signals in a second direction. A safety device is coupled to each of the first and second transmission paths and includes a control unit adapted to detect a fault condition associated with the communication bus. The safety device further includes a switch unit adapted to interrupt the flow of electrical signals along each of the first and second transmission paths in response to the detected fault condition. In this manner, the detection circuitry of the communication bus automatically reduces or prevents the occurrence of sparks or arcing in the event of a fault condition associated with the communication bus.
    • 适用于过程工厂的危险区域的通信总线包括适于在第一方向上传送电信号的第一传输路径和适于在第二方向上传送电信号的第二传输路径。 安全装置耦合到第一和第二传输路径中的每一个,并且包括适于检测与通信总线相关联的故障状况的控制单元。 安全装置还包括开关单元,其适于响应于检测到的故障状况中断沿着第一和第二传输路径中的每一个的电信号的流动。 以这种方式,通信总线的检测电路在与通信总线相关的故障状况的情况下自动地减少或防止火花或电弧的发生。
    • 10. 发明授权
    • Process control configuration system for use with an AS-Interface device network
    • 用于AS-Interface设备网络的过程控制配置系统
    • US06446202B1
    • 2002-09-03
    • US09412076
    • 1999-10-04
    • Kenneth D. KrivosheinAndrew P. DoveGary K. Law
    • Kenneth D. KrivosheinAndrew P. DoveGary K. Law
    • G06F1700
    • H04L41/0856G05B19/0421G05B19/4185G05B2219/25428G05B2219/31135G05B2219/31154G05B2219/31174G05B2219/33105G05B2219/33126H04L41/0853Y02P90/18
    • A configuration system for use in a process control network having a controller, a first device network that communicates using a first input/output protocol, such as a Fieldbus or a HART device protocol, and an AS-Interface device network that communicates using an AS-Interface input/output communication protocol includes a configuration database that stores configuration information pertaining to the first device network and configuration information pertaining to the AS-Interface device network, a data access routine that automatically requests configuration information pertaining to the first device network and configuration information pertaining to the AS-Interface device network and a configurator that configures the AS-Interface device network based on the AS-Interface device network configuration information. The configurator stores the AS-Interface device network configuration information in the configuration database along with configuration information pertaining to the first device network. A documentation routine accesses the configuration database to display a process control documentation schematic illustrating the configuration of the first device network and the AS-Interface device network within the process control system.
    • 一种用于具有控制器的过程控制网络的配置系统,使用诸如现场总线或HART设备协议的第一输入/输出协议进行通信的第一设备网络以及使用AS进行通信的AS接口设备网络 - 接口输入/输出通信协议包括存储与第一设备网络相关的配置信息和与AS接口设备网络有关的配置信息的配置数据库,自动请求与第一设备网络相关的配置信息和配置的数据访问例程 关于AS-Interface设备网络的信息以及基于AS-Interface设备网络配置信息配置AS-Interface设备网络的配置器。 配置器将AS-Interface设备网络配置信息与配置信息相关联的配置信息存储在配置数据库中。 文档例程访问配置数据库,以显示过程控制文档原理图,说明过程控制系统中第一个设备网络和AS-Interface设备网络的配置。