公开(公告)号：US06411923B1

公开(公告)日：2002-06-25

申请号：US09070140

申请日：1998-04-30

Applicant: Wade C. Stewart ,  David M. Hyde ,  Deborah R. Colclazier ,  Doyle E. Broom

Inventor： Wade C. Stewart ,  David M. Hyde ,  Deborah R. Colclazier ,  Doyle E. Broom

IPC: G06F1300

CPC classification number: G05B15/02 ,  G05B2219/31135 ,  G05B2219/32182 ,  Y02P90/22

Abstract: The present invention is directed to an analysis tool for aiding in the design of a process control system which conforms to a standard protocol. Such a tool advantageously allows the efficient design of a process control system while ensuring that the physical characteristics of the system conform to the standard.

Abstract translation: 本发明涉及一种用于辅助符合标准协议的过程控制系统的设计的分析工具。 这种工具有利地允许过程控制系统的有效设计，同时确保系统的物理特性符合标准。

公开(公告)号：US06285966B1

公开(公告)日：2001-09-04

申请号：US09105333

申请日：1998-06-25

Applicant: Larry K. Brown ,  Brent H. Larson ,  Harry A. Burns

Inventor： Larry K. Brown ,  Brent H. Larson ,  Harry A. Burns

IPC: G06F1500

CPC classification number: G05B19/4185 ,  G05B19/0425 ,  G05B19/406 ,  G05B2219/25428 ,  G05B2219/31121 ,  G05B2219/31122 ,  G05B2219/31135 ,  G05B2219/31436 ,  G05B2219/31455 ,  Y02P90/18 ,  Y02P90/20

Abstract: The present invention is directed to a method of and a device for monitoring, from a central location, the current operating conditions (such as values of process parameters) in a process control network having distributed control functions. In one embodiment, the method and device of the present invention use scheduled periodic communications to send signals containing, for example, measured values of process parameters developed by field devices to a centralized viewing device. The viewing device receives the signals and stores at least one value of the process parameters, and maybe more values if necessary to monitor and control the process. To retrieve the stored process parameters for viewing, the viewing device processes messages from human interface devices requesting the stored values of one or more of the stored parameters and then transmits response messages containing the stored values. The human interface device may be the same device as the viewing device, or may be a separate device that communicates with the viewing device using either the same or a different communication protocol as that used by the field devices to communicate with the viewing device. Additionally, the request and response messages may be sent between the devices using unscheduled queued communications.

Abstract translation: 本发明涉及一种用于从中心位置监测具有分布式控制功能的过程控制网络中的当前操作条件（诸如过程参数的值）的方法和设备。 在一个实施例中，本发明的方法和装置使用调度的周期性通信来发送包含例如由现场设备开发的过程参数的测量值的信号到集中式观察设备。 观察装置接收信号并存储过程参数的至少一个值，并且如果必要的话可能需要更多的值来监视和控制过程。 为了检索存储的用于查看的过程参数，观看设备处理来自人接口设备的消息，请求存储参数中的一个或多个的存储值，然后发送包含存储的值的响应消息。 人机接口设备可以是与观看设备相同的设备，或者可以是使用与现场设备用于与观看设备通信的相同或不同的通信协议与观看设备进行通信的单独设备。 此外，请求和响应消息可以使用非计划的排队通信在设备之间发送。

公开(公告)号：US5923557A

公开(公告)日：1999-07-13

申请号：US904364

申请日：1997-08-01

Applicant: John C. Eidson

Inventor： John C. Eidson

IPC: G06F13/36 ,  G05B15/02 ,  G05B19/05 ,  G05B19/414 ,  H04L12/40 ,  H04L29/06 ,  G06F7/00

CPC classification number: H04L12/40006 ,  G05B19/4147 ,  H04L29/06 ,  G05B2219/31121 ,  G05B2219/31129 ,  G05B2219/31135 ,  G05B2219/31138 ,  G05B2219/33177 ,  H04L2012/4026 ,  H04L69/08 ,  Y02P90/18

Abstract: A method and apparatus is disclosed that provides a standard interface to process control devices which are adapted to differing field-bus protocols. The techniques disclosed herein enable integration of process control devices adapted to differing field-bus protocols while avoiding the use of protocol gateways which would otherwise greatly complicate the task of developing process control application programs.

Abstract translation: 公开了一种方法和装置，其提供适用于不同现场总线协议的处理控制装置的标准接口。 这里公开的技术可以集成适应于不同的现场总线协议的过程控制设备，同时避免使用协议网关，否则会使开发过程控制应用程序的任务复杂化。

公开(公告)号：US5650777A

公开(公告)日：1997-07-22

申请号：US479801

申请日：1995-06-07

Applicant: Brian L. Westfield ,  Stephen D. Anderson ,  Bennett L. Louwagie ,  Todd A. Piechowski

Inventor： Brian L. Westfield ,  Stephen D. Anderson ,  Bennett L. Louwagie ,  Todd A. Piechowski

IPC: G05B11/36 ,  G05B19/042 ,  G05B19/418 ,  H04L25/02 ,  G08C19/36

CPC classification number: G05B19/0423 ,  G05B19/4185 ,  G05B2219/25189 ,  G05B2219/25191 ,  G05B2219/31121 ,  G05B2219/31126 ,  G05B2219/31135 ,  G05B2219/33197 ,  Y02P90/18

Abstract: Conversion circuitry for use in a process control system is adapted for coupling to a primary process control loop. Digital receiver circuitry in the conversion circuitry receives a digital signal transmitted over the primary process control loop from a field transmitter and responsively provides a digital output. A microprocessor receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry for coupling to a secondary process control loop receives the secondary loop control output from the microprocessor and responsively controls current flowing through the secondary process control loop. The current flowing through the secondary process control loop is related to the digital signal transmitted by the field transmitter.

Abstract translation: 用于过程控制系统的转换电路适于耦合到主过程控制回路。 转换电路中的数字接收机电路接收从现场发射机通过主过程控制回路传输的数字信号，并且响应地提供数字输出。 微处理器接收数字输出并且响应地提供辅助回路控制输出。 用于耦合到次级过程控制回路的二次回路控制电路接收来自微处理器的次级回路控制输出，并且响应地控制流过次级过程控制回路的电流。 流过次级过程控制回路的电流与现场发射机发射的数字信号有关。