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1. 发明授权

US4958270A Method for control data base updating of a redundant processor in a process control system 失效
标题翻译：用于在过程控制系统中控制冗余处理器的数据库更新的方法
公开(公告)号：US4958270A
公开(公告)日：1990-09-18
申请号：US299859
申请日：1989-01-23
申请人： Paul F. McLaughlin , Pankaj H. Mody
发明人： Paul F. McLaughlin , Pankaj H. Mody
IPC分类号： G05B9/03 , G06F11/14 , G06F11/20 , G06F17/30
CPC分类号： G06F17/30371 , G05B9/03 , G06F11/2097 , G06F11/2038
摘要： A process control system includes a process controller which has a first and second controller, one of the controllers being designated as a primary controller and the other controller being designated as a secondary controller. Each controller has a respective data base. The primary controller performs predefined control functions of the process control system which includes updating the data base associated with the primary controller as a result of performing the predefined control functions. A method for updating the data base associated with the secondary controller comprises the steps of performing the control functions. Results therefrom are utilized to update the data base associated with the primary controller. Simultaneously with updating the data base, predetermined information being stored in the primary data base is collected. At the completion of performing the control functions, the predetermined information which was collected is transferred to the secondary controller.
摘要翻译：过程控制系统包括具有第一和第二控制器的过程控制器，其中一个控制器被指定为主控制器，另一个控制器被指定为次级控制器。每个控制器都有相应的数据库。主控制器执行过程控制系统的预定义的控制功能，其包括作为执行预定义的控制功能而更新与主控制器相关联的数据库。用于更新与次级控制器相关联的数据库的方法包括执行控制功能的步骤。利用其结果来更新与主控制器相关联的数据库。在更新数据库的同时，收集存储在主数据库中的预定信息。在执行控制功能的完成时，收集的预定信息被传送到二级控制器。

2. 发明授权

US06317638B1 Multi-layer state machine for a hybrid real-time control system and method of operation thereof 失效
标题翻译：用于混合实时控制系统的多层状态机及其操作方法
公开(公告)号：US06317638B1
公开(公告)日：2001-11-13
申请号：US08920266
申请日：1997-08-22
申请人： James M. Schreder , Jurgen Rudnick , Paul F. McLaughlin , Pankaj H. Mody
发明人： James M. Schreder , Jurgen Rudnick , Paul F. McLaughlin , Pankaj H. Mody
IPC分类号： G05B1302
CPC分类号： G06F9/542 , G05B19/042 , G06F9/4843
摘要： Various system architectures for a state machine-based, hybrid real-time control system, and methods of operation thereof, are disclosed. In one embodiment of a system architecture for use with a state machine capable of controlling a real-time process and having a plurality of states and handlers that govern transitions between ones of the plurality of states, a system for invoking one of the handlers includes an invoke transition that monitors conditions of the real-time process, the invoke transition causing the automatic invocation of the handler when the conditions match predetermined conditions under which the handler is to be invoked, the invoke transition thereby allowing the handler to be invoked without an explicit command.
摘要翻译：公开了用于基于状态机的混合实时控制系统的各种系统架构及其操作方法。在与能够控制实时过程并且具有多个状态和处理器的状态机一起使用的系统架构的一个实施例中，所述状态和处理器控制所述多个状态中的一个状态之间的转换，用于调用所述处理器之一的系统包括：调用监视实时进程的条件的转换，当条件匹配要调用处理程序的预定条件时，调用转换导致处理程序的自动调用，调用转换，从而允许调用处理程序而不显式命令。

3. 发明授权

US5088021A Apparatus and method for guaranteed data store in redundant controllers of a process control system 失效
标题翻译：用于在过程控制系统的冗余控制器中保证数据存储的装置和方法
公开(公告)号：US5088021A
公开(公告)日：1992-02-11
申请号：US404124
申请日：1989-09-07
申请人： Paul F. McLaughlin , Pankaj H. Mody
发明人： Paul F. McLaughlin , Pankaj H. Mody
IPC分类号： G05B9/03 , G06F11/20
CPC分类号： G06F11/2094 , G05B9/03 , G06F11/2092 , G06F11/1662
摘要： In a process control system, having at least one process control unit which includes redundant equivalent controllers to reduce the impact of failure of the controllers in the process control unit, a technique is provided to guarantee that interruption of either the active (primary) controller or the backup (secondary) controller will not adversely effect the storage of data signals or the execution of commands by the process control unit. In the present invention, an information message or packet sent to the process control unit and, hence, to the active controller is forwarded to the backup controller before a response in the form of acknowledgement message is returned to the device issuing the information message or packet. The information message or packet is therefore stored in the same order in both the active controller and the backup controller and is executed in the same order by either controller. This technique is particularly important in a process control network of a process control system to insure successful monitoring and control functions for the process.
摘要翻译：在过程控制系统中，具有包括冗余等效控制器的至少一个过程控制单元以减少控制器在过程控制单元中的故障的影响，提供了一种技术来保证主动（主）控制器或备用（辅助）控制器不会不利地影响数据信号的存储或过程控制单元执行命令。在本发明中，在将确认消息的形式的响应返回到发出信息消息或分组的设备之前，发送到过程控制单元以及因此发送到主动控制器的信息消息或分组被转发到备用控制器。因此，信息消息或分组以相同的顺序存储在主动控制器和备用控制器中，并且由任一控制器以相同的顺序执行。这种技术在过程控制系统的过程控制网络中特别重要，以确保过程成功的监控和控制功能。

4. 发明授权

US5255388A Synchronizing slave processors through eavesdrop by one on a write request message directed to another followed by comparison of individual status request replies 失效
标题翻译：通过一个针对另一个的写入请求消息窃听来同步从属处理器，然后比较各个状态请求应答
公开(公告)号：US5255388A
公开(公告)日：1993-10-19
申请号：US588389
申请日：1990-09-26
申请人： Paul F. McLaughlin , Pankaj H. Mody , Robert W. Bristow
发明人： Paul F. McLaughlin , Pankaj H. Mody , Robert W. Bristow
IPC分类号： G06F11/16 , G06F11/20 , G06F13/00 , G06F15/16 , G06F15/177 , G06F15/04 , G06F15/40
CPC分类号： G06F11/1658 , G06F11/1683 , G06F11/1687 , G06F11/2097 , G06F11/1641 , Y10S707/99955
摘要： Data bases of a first and second input output processor (IOP), which are primary and secondary slave IOPs, respectively, are synchronized, and communications by a master controller is made only to the first IOP. Each IOP is executing the same tasks utilizing their own clocking systems. A method for guaranteeing that the first and second data base remain synchronized comprises the steps of communicating a message to the first IOP to update the first data base. The second IOP eavesdrops on the communications, and when the second IOP recognizes that the message is to the corresponding primary slave IOP and that the first IOP has successfully received the message, accepts the message. The first IOP and the second IOP execute the received message. The master controller issues a status request type message to the first IOP, and then issues a status request type message to the second IOP. The controller verifies that responses to the status requests indicate the update of the respective first and second data bases was completed identically, thereby providing information which permits the master controller to guarantee the first and second data base remains synchronized after the update operation.

5. 发明授权

US06421570B1 Systems and methods for accessing data using a cyclic publish/subscribe scheme with report by exception 失效
标题翻译：使用循环发布/订阅方案访问数据的系统和方法，具有异常报告
公开(公告)号：US06421570B1
公开(公告)日：2002-07-16
申请号：US08920265
申请日：1997-08-22
申请人： Paul F. McLaughlin , Jethro F. Steinman , Ken Gorman , Muslim G. Kanji , Joseph P. Felix
发明人： Paul F. McLaughlin , Jethro F. Steinman , Ken Gorman , Muslim G. Kanji , Joseph P. Felix
IPC分类号： G05B1500
CPC分类号： G05B19/4185 , Y02P90/18
摘要： The present invention provides systems and methods for controlling associated processes in a process facility and, in particular, for distributing data among nodes of a real time process control system that controls the process facility. An exemplary real time process control system includes a plurality of sensors, controllable devices, and communication paths, as well as a computer system. The sensors and controllable devices are associated with various ones of the processes of the process facility, and the communication paths associate the sensors and controllable devices with the computer system. The computer system operates on data relating to the process facility, and distributes the data among the nodes thereof. The nodes are associated with one another by ones of the communication paths also. The computer system includes subscriber nodes that desire data associated with certain of the processes and a publisher node. The publisher node monitors subscription lists associated with the subscriber nodes and, in response thereto, selectively communicates instances of the data to the subscriber nodes using ones of the communication paths. The communication paths have data traffic capacities and the computer system controls data distribution using the publisher node to efficiently utilize such data traffic capacities.
摘要翻译：本发明提供了用于控制过程设备中的相关过程的系统和方法，特别是用于在控制过程设施的实时过程控制系统的节点之间分配数据。示例性的实时过程控制系统包括多个传感器，可控设备和通信路径以及计算机系统。传感器和可控设备与处理设备的各种过程相关联，并且通信路径将传感器和可控设备与计算机系统相关联。计算机系统对与处理设施有关的数据进行操作，并在其节点之间分配数据。这些节点也通过通信路径彼此相关联。计算机系统包括期望与某些进程相关联的数据的订户节点和发布者节点。发布者节点监视与订户节点相关联的订阅列表，并且响应于此，使用通信路径中的一个选择性地将数据的实例传送到订户节点。通信路径具有数据业务容量，并且计算机系统使用发布者节点控制数据分发，以有效地利用这种数据业务容量。

6. 发明授权

US5261092A Synchronizing slave processors through eavesdrop by one on periodic sync-verify messages directed to another followed by comparison of individual status 失效
标题翻译：同步从属处理器通过一个周期性的同步验证消息指向另一个，然后比较个别状态
公开(公告)号：US5261092A
公开(公告)日：1993-11-09
申请号：US588388
申请日：1990-09-26
申请人： Paul F. McLaughlin , Robert W. Bristow
发明人： Paul F. McLaughlin , Robert W. Bristow
IPC分类号： G06F11/18 , G06F11/16 , G06F11/20 , G06F13/00 , G06F15/16 , G06F15/177 , G06F15/04 , G06F15/40
CPC分类号： G06F11/1658 , G06F11/1683 , G06F11/1687 , G06F11/2097 , G05B2219/31324 , G06F11/1641 , G06F11/2038
摘要： Data bases of a first and second input output processor (IOP), which are primary and secondary slave IOPs, respectively, are synchronized, and communications by a master controller is made only to the first IOP. Each IOP is executing the same tasks utilizing their own clocking systems. A method for periodically verifying that the first and second data base remain synchronized comprises the steps of sending a sync-verify type message to the first IOP. The second IOP eavesdrops on the communications, and when the second IOP recognizes that the message is addressed to the corresponding primary slave IOP, accepts the message. Upon detecting the message is of the sync-verify type by each IOP, operations by each IOP are suspended. A number is generated by each IOP of its own data base, the number being indicative of the contents of the information stored in the data base. A status request type message is issued by the master controller to the first IOP for the number generated by the first IOP, and a status request type message is issued by the master controller to the second IOP for the number generated by the second IOP. Upon receipt of the numbers by the master controller, the value of the number generated by the first IOP is compared to the value of the number generated by the second IOP, thereby determining that the information stored in the first and second data bases are the same when the numbers compare.

7. 发明授权

US5202822A Universal scheme of input/output redundancy in a process control system 失效
标题翻译：通用流程控制系统中输入/输出冗余的方案
公开(公告)号：US5202822A
公开(公告)日：1993-04-13
申请号：US588386
申请日：1990-09-26
申请人： Paul F. McLaughlin , Robert W. Bristow
发明人： Paul F. McLaughlin , Robert W. Bristow
IPC分类号： G06F11/20 , G06F13/00 , G06F15/16
CPC分类号： G06F11/2097 , G05B19/0423 , G05B9/03 , G06F11/2017 , G06F11/1679 , G06F11/2007
摘要： A controller of a control system, which operates as a master, has a slave input/output processor (IOP) connected thereto which communicates with at least one device of a predetermined type, and a backup slave IOP connected thereto of the same type as the slave IOP, the slave IOP operating as a primary IOP to the device. A method for providing backup to the slave IOP by the backup slave IOP comprises the steps of loading the backup slave IOP with the same data base as the slave IOP. The backup slave IOP eavesdrops on all communications from the controller to the slave IOP. When a write command is communicated to the slave IOP, the backup slave IOP taps the data from the bus and updates its data base. If the command is not a write command, ignores the communication. When a fault is detected by either the slave IOP or the backup slave IOP, the detection of the fault is communicated to the other IOP. The IOPs then failover such that the backup IOP is operatively connected to the device and the slave IOP is disconnected from the device. Finally, the controller acknowledges that the backup slave IOP is now operating as the primary source to the device.

8. 发明授权

US08285326B2 Multiprotocol wireless communication backbone 有权
标题翻译：多协议无线通信骨干网
公开(公告)号：US08285326B2
公开(公告)日：2012-10-09
申请号：US11306516
申请日：2005-12-30
申请人： Joseph P. Carmody , Yu-Gene T. Chen , Patrick S. Gonia , Paul F. McLaughlin
发明人： Joseph P. Carmody , Yu-Gene T. Chen , Patrick S. Gonia , Paul F. McLaughlin
IPC分类号： H04M1/00
CPC分类号： H04L63/10 , G05B2219/31129 , G05B2219/31151 , G05B2219/33192 , H04L69/18 , H04W92/02
摘要： Methods, devices and systems for integrating multiple communication systems including multiple wireless communication protocols into a single system are discussed. In an illustrative example, a communication system includes a device adapted to communicate via first and second wireless communication protocols. The system may further include local area network or other wired sub-network, with the device adapted for first and second protocols also being adapted to operate using the local area network or other wired sub-network.
摘要翻译：讨论了将包括多个无线通信协议的多个通信系统集成到单个系统中的方法，设备和系统。在说明性示例中，通信系统包括适于经由第一和第二无线通信协议进行通信的设备。该系统可以进一步包括局域网或其他有线子网络，适用于第一和第二协议的设备也适于使用局域网或其他有线子网进行操作。

9. 发明授权

US5210756A Fault detection in relay drive circuits 失效
标题翻译：继电器驱动电路故障检测
公开(公告)号：US5210756A
公开(公告)日：1993-05-11
申请号：US588387
申请日：1990-09-26
申请人： Karl T. Kummer , Robert W. Bristow , Paul F. McLaughlin , Hieu T. Duong
发明人： Karl T. Kummer , Robert W. Bristow , Paul F. McLaughlin , Hieu T. Duong
IPC分类号： G05B9/02 , G05B9/03 , G05B23/02 , G06F11/20 , G06F11/267
CPC分类号： G06F11/2221 , G05B9/03 , G06F11/2038 , G06F11/2097
摘要： A system has at least one output device, the output device having a first set of output terminals connected to a corresponding field device. Each output device has a corresponding redundant output device having a corresponding first set of output terminals connected to the same corresponding field device as the corresponding output device. The output device and the redundant output device each have a second set of output terminals corresponding to the first set of output terminals, the second set of output terminals being connected to an apparatus for controlling the information outputted from the first set of output terminals. The apparatus comprises a plurality of switching elements, having a set of first and second contact points. Each of the second set of output terminals of the output device being connected to a corresponding first contact point, and the second set of output terminals of the redundant output device being connected to the corresponding second contact point. An activating element activates the plurality of switching elements in response to a control signal from the output device and the redundant output device such that the information outputted from the output device or the redundant output device is prevented from being coupled to the field device.

10. 发明授权

US5136498A Method for enacting failover of a 1:1 redundant pair of slave processors 失效
标题翻译：用于启动从属处理器的1：1冗余对的失败的方法
公开(公告)号：US5136498A
公开(公告)日：1992-08-04
申请号：US588385
申请日：1990-09-26
申请人： Paul F. McLaughlin , Robert W. Bristow , Karl T. Kummer
发明人： Paul F. McLaughlin , Robert W. Bristow , Karl T. Kummer
IPC分类号： G06F11/20 , G06F13/00 , G06F15/16
CPC分类号： G06F11/2097 , G06F11/2017 , G06F11/1679 , G06F11/2007
摘要： A primary slave IOP, upon detecting an error, verifies the availability of a secondary slave IOP, and then sets an output control signal to indicate backup is requested. The primary slave IOP then takes itself out of being the primary. A secondary slave IOP, sensing that the output control signal from the other IOP has been set, assumes the roll of the primary slave IOP. A master controller, detecting an error with the primary slave IOP, interrogates the primary and secondary slave IOPs for a status input, and then arbitrates between the first and second IOP to determine the IOP that is to take on the primary role. Finally the master controller awards the more operational IOP the role of the primary slave IOP, thereby completing the failover operation.

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