公开(公告)号：US06760687B2

公开(公告)日：2004-07-06

申请号：US09871442

申请日：2001-05-31

申请人： Michael D. Apel ,  Steve Dienstbier ,  William E. Bennett ,  Ken J. Beoughter ,  Marina Sokolova

发明人： Michael D. Apel ,  Steve Dienstbier ,  William E. Bennett ,  Ken J. Beoughter ,  Marina Sokolova

IPC分类号： G06F1500

CPC分类号： G06F11/3055 ,  G05B19/042 ,  G05B2219/24055 ,  G05B2219/25249 ,  G05B2219/25367 ,  G05B2219/25428 ,  G06F11/3013 ,  G06F11/3027 ,  Y02P90/16

摘要： A sequence of events detection system for use in a process control system uses sequence of events detection cards to detect and store indications of events and the times at which these events take place within the process control network. The sequence of events reporting system includes a stable master time source that is used to periodically time synchronize secondary clocks within each of the nodes of the process control system. Free running counters are located within each of the sequence of events detection cards at each node and these free running counters are used to mark each event with a counter value when the sequence of events detection card first detects the event. Indications of the event and of the counter value associated with a detected event are sent from each of the sequence1 of events detection cards to a corresponding controller which uses its secondary clock, a further free running counter and the value of the sequence of events counter assigned to the event to ascertain the actual or absolute time that the event was detected at the sequence of events card. The event and the absolute time for that event is then sent to a sequence of events reporting database, where this information is stored to form a system wide sequence of events log.

摘要翻译： 在过程控制系统中使用的一系列事件检测系统使用事件检测卡的序列来检测和存储事件的指示以及这些事件在过程控制网络内发生的时间。 事件报告系统的顺序包括稳定的主时间源，用于周期性地同步过程控制系统的每个节点内的辅助时钟。 自由运行计数器位于每个节点的每个事件检测卡序列中，并且当事件检测卡的顺序首先检测到事件时，这些自由运行的计数器用于使用计数器值来标记每个事件。 事件和与检测到的事件相关联的计数器值的指示从事件检测卡的序列1中的每一个发送到使用其辅助时钟的相应控制器，进一步的自由运行计数器和事件序列的值分配 以事件来确定在事件卡序列中检测到事件的实际或绝对时间。 事件和该事件的绝对时间然后被发送到报告数据库的事件序列，其中存储该信息以形成系统范围的事件日志序列。

公开(公告)号：US08510479B2

公开(公告)日：2013-08-13

申请号：US13243203

申请日：2011-09-23

申请人： Michael D. Apel ,  Steve Dienstbier

发明人： Michael D. Apel ,  Steve Dienstbier

IPC分类号： G06F11/00 ,  G06F3/00 ,  G06F13/00

CPC分类号： G06F11/2017 ,  G06F9/4411 ,  G06F11/0745 ,  G06F11/0793

摘要： A process control system is provided having a plurality of I/O devices in communication using a bus. A primary redundant I/O device and a secondary redundant I/O device are coupled to the bus, where the secondary redundant I/O device is programmed to detect a primary redundant I/O device fault. The secondary redundant I/O device, upon detecting the primary redundant I/O device fault, publishes a primary redundant I/O device fault message on the bus. The controller may deactivate the primary redundant I/O device and activate the secondary redundant I/O device responsive to the primary redundant I/O device fault message.

摘要翻译： 提供了具有使用总线通信的多个I / O设备的过程控制系统。 主冗余I / O设备和辅助冗余I / O设备耦合到总线，其中辅助冗余I / O设备被编程以检测主冗余I / O设备故障。 辅助冗余I / O设备在检测到主冗余I / O设备故障时，在总线上发布主冗余I / O设备故障消息。 响应于主冗余I / O设备故障消息，控制器可以取消激活主冗余I / O设备并激活辅助冗余I / O设备。

公开(公告)号：US20100100773A1

公开(公告)日：2010-04-22

申请号：US12646398

申请日：2009-12-23

申请人： Michael D. Apel ,  Steve Dienstbier

发明人： Michael D. Apel ,  Steve Dienstbier

IPC分类号： G06F11/07

CPC分类号： G06F11/2017 ,  G06F9/4411 ,  G06F11/0745 ,  G06F11/0793

摘要： A process control system is provided having a plurality of I/O devices in communication using a bus. A primary redundant I/O device and a secondary redundant I/O device are coupled to the bus, where the secondary redundant I/O device is programmed to detect a primary redundant I/O device fault. The secondary redundant I/O device, upon detecting the primary redundant I/O device fault, publishes a primary redundant I/O device fault message on the bus. The controller may deactivate the primary redundant I/O device and activate the secondary redundant I/O device responsive to the primary redundant I/O device fault message.

摘要翻译： 提供了具有使用总线通信的多个I / O设备的过程控制系统。 主冗余I / O设备和辅助冗余I / O设备耦合到总线，其中辅助冗余I / O设备被编程以检测主冗余I / O设备故障。 辅助冗余I / O设备在检测到主冗余I / O设备故障时，在总线上发布主冗余I / O设备故障消息。 响应于主冗余I / O设备故障消息，控制器可以取消激活主冗余I / O设备并激活辅助冗余I / O设备。

公开(公告)号：US07370239B2

公开(公告)日：2008-05-06

申请号：US09871115

申请日：2001-05-31

申请人： Michael D. Apel ,  Steve Dienstbier

发明人： Michael D. Apel ,  Steve Dienstbier

IPC分类号： H04L1/22 ,  G06F11/00 ,  G06F13/00 ,  G06F13/12

CPC分类号： G06F11/2017 ,  G06F9/4411 ,  G06F11/0745 ,  G06F11/0793

摘要： A process control system includes a plurality of input/output (I/O) devices and a controller in communication using a bus. Each I/O device has an interface for communicatively linking the I/O device with the bus, and includes a device processor which, upon detection of a potential I/O device fault, severs the communication link provided by the interface with the bus to thereby remove the I/O device from the bus and to prevent the I/O device from keeping other I/O devices on the bus from communicating over the bus.

摘要翻译： 过程控制系统包括多个输入/输出（I / O）设备和使用总线进行通信的控制器。 每个I / O设备具有用于将I / O设备与总线通信地链接的接口，并且包括设备处理器，其在检测到潜在的I / O设备故障时，将由与总线的接口提供的通信链路切断 从而从总线上移除I / O设备，并防止I / O设备将总线上的其他I / O设备保持在总线上进行通信。