公开(公告)号：US06593857B1

公开(公告)日：2003-07-15

申请号：US09638181

申请日：2000-07-31

申请人： Weston Roper ,  Todd M. Berge ,  David G. Tyson ,  Brian L. Westfield ,  Richard L. Nelson

发明人： Weston Roper ,  Todd M. Berge ,  David G. Tyson ,  Brian L. Westfield ,  Richard L. Nelson

IPC分类号： G08C1900

CPC分类号： G01D1/00 ,  G01L13/026 ,  G01L19/0084 ,  G01L19/0663 ,  G01L19/069 ,  G01L19/083 ,  H01R13/527 ,  H01R29/00 ,  Y10S439/912 ,  Y10T29/49002

摘要： A modular process transmitter having a scalable EMI/RFI filtering architecture includes a unitized sensor module and a transmitter module. The unitized sensor module is adapted to operate as a stand-alone process transmitter. The transmitter module can couple to the unitized sensor module to expand the capabilities of the unitized sensor module. The unitized sensor module includes a sensor housing, a sensor circuit and a removable sensor EMI/RFI filtering circuit. The sensor circuit provides a sensor output in accordance with either a local format or a first communication protocol. The sensor EMI/RFI filtering circuit filters noise in accordance with the first communication protocol. The transmitter module includes a transmitter module housing, a communications circuit, and a transmitter module EMI/RFI filtering circuit. The communications circuit is adapted to receive the sensor output from the sensor circuit in the local format and generate a scalable output in accordance with a second communication protocol. The transmitter module EMI/RFI filtering circuit is adapted to replace the sensor EMI/RFI filtering circuit and filter noise in accordance with the second communication protocol.

摘要翻译： 具有可扩展EMI / RFI滤波架构的模块化过程变送器包括单元化传感器模块和发射器模块。 单元化传感器模块适用于独立的过程变送器。 发射机模块可以耦合到单元化的传感器模块，以扩大组合式传感器模块的功能。 组合式传感器模块包括传感器外壳，传感器电路和可移动传感器EMI / RFI滤波电路。 传感器电路根据本地格式或第一通信协议提供传感器输出。 传感器EMI / RFI滤波电路根据第一个通信协议对噪声进行滤波。 发射机模块包括发射机模块外壳，通信电路和发射机模块EMI / RFI滤波电路。 通信电路适于以本地格式从传感器电路接收传感器输出，并根据第二通信协议生成可缩放的输出。 发射机模块EMI / RFI滤波电路适用于根据第二通信协议来替代传感器EMI / RFI滤波电路和滤波器噪声。

公开(公告)号：US06504489B1

公开(公告)日：2003-01-07

申请号：US09571111

申请日：2000-05-15

申请人： Brian L. Westfield ,  Weston Roper ,  Richard L. Nelson

发明人： Brian L. Westfield ,  Weston Roper ,  Richard L. Nelson

IPC分类号： G08C1900

CPC分类号： G08C19/02

摘要： Disclosed is a process control transmitter having an externally accessible DC circuit common that eliminates the need to perform level shifting of signals communicated between the transmitter and external processing electronics. The process control transmitter includes first, second and third terminals which feedthrough a housing. Circuitry contained in the housing is coupled to the first, second and third terminals and is adapted to communicate information to external processing electronics through the second and third terminals using a digital signal that is regulated relative to a DC common that is coupled to the second terminal. External processing electronics can couple to the second and third terminals and interpret the digital signal without having to perform level-shifting adjustments.

摘要翻译： 公开了一种具有外部可访问的DC电路的过程控制发送器，其不需要执行在发射器和外部处理电子器件之间传送的信号的电平移位。 过程控制变送器包括穿过壳体的第一，第二和第三端子。 包含在壳体中的电路耦合到第一，第二和第三终端，并且适于使用相对于耦合到第二终端的DC公共端调节的数字信号通过第二和第三终端将信息传送到外部处理电子设备 。 外部处理电子器件可以耦合到第二和第三端子并且解释数字信号，而不必进行电平移位调整。

公开(公告)号：US06487912B1

公开(公告)日：2002-12-03

申请号：US09519912

申请日：2000-03-07

申请人： Steven M. Behm ,  Richard L. Nelson ,  Robert Hedtke ,  Roger Frick ,  Scott D. Nelson ,  Mark Fandrey ,  Theodore H. Schnaare ,  Brian L. Westfield ,  Mark S. Schumacher ,  Weston Roper

发明人： Steven M. Behm ,  Richard L. Nelson ,  Robert Hedtke ,  Roger Frick ,  Scott D. Nelson ,  Mark Fandrey ,  Theodore H. Schnaare ,  Brian L. Westfield ,  Mark S. Schumacher ,  Weston Roper

IPC分类号： G01L900

CPC分类号： G01L19/0046 ,  G01D1/00 ,  G01L19/0084 ,  G01L19/0663 ,  G01L19/141 ,  H01R29/00

摘要： A pressure sensor module and method for pre-installation without a converter module. The pressure sensor module is hermetically sealed and can remain undamaged in an installation environment without a converter module. The pressure sensor module can be assembled later with a converter module in the installation environment. The pressure sensor module includes an isolator, a pressure sensor and a circuit that provides a bus for energization, control and a digital pressure output. The bus is connected to contacts in an insulating feedthrough. An integrally formed hermetic external support structure surrounds the pressure sensor and circuit. The hermetic external support structure has a threaded process fluid inlet around the isolator, and a threaded support sleeve supporting the feedthrough.

摘要翻译： 压力传感器模块和方法，用于在没有转换器模块的情况下预安装。 压力传感器模块是密封的，并且可以在没有转换器模块的安装环境中保持不损坏。 以后可以在安装环境中使用转换器模块组装压力传感器模块。 压力传感器模块包括隔离器，压力传感器和提供用于通电，控制和数字压力输出的总线的电路。 总线连接到绝缘馈通中的触点。 整体形成的密封外部支撑结构围绕压力传感器和电路。 密封的外部支撑结构具有围绕隔离器的螺纹过程流体入口和支撑馈通的螺纹支撑套筒。

公开(公告)号：US06609427B1

公开(公告)日：2003-08-26

申请号：US09667289

申请日：2000-09-22

申请人： Brian L. Westfield ,  Robert C. Hedtke ,  Weston Roper ,  Mark C. Fandrey ,  Roger L. Frick ,  Scott D. Nelson ,  Theodore H. Schnaare ,  Steven M. Behm ,  Mark S. Schumacher

发明人： Brian L. Westfield ,  Robert C. Hedtke ,  Weston Roper ,  Mark C. Fandrey ,  Roger L. Frick ,  Scott D. Nelson ,  Theodore H. Schnaare ,  Steven M. Behm ,  Mark S. Schumacher

IPC分类号： G01L900

CPC分类号： G01D1/00 ,  G01L13/026 ,  G01L19/0084 ,  G01L19/0663 ,  G01L19/069 ,  G01L19/083 ,  H01R13/527 ,  H01R29/00 ,  Y10S439/912 ,  Y10T29/49002

摘要： A pressure transmitter with a hermetically sealed housing surrounding a cavity that is filled with a gas that is free of integrated circuit contaminants. A sensor circuit including an integrated circuit is placed in the cavity and a gas fill port on the housing is sealed. The sensor circuit is electrically adjustable from outside the pressure transmitter and the integrated circuit is protected from contaminated atmospheres outside the pressure transmitter.

摘要翻译： 一个压力变送器，带有密封的壳体，围绕一个空腔，充满了没有集成电路污染物的气体。 包括集成电路的传感器电路被放置在空腔中，并且壳体上的气体填充口被密封。 传感器电路可以从压力变送器外面进行电气调节，并且集成电路可以防止压力变送器外的污染环境。

公开(公告)号：US06765968B1

公开(公告)日：2004-07-20

申请号：US09672338

申请日：2000-09-28

申请人： Richard L. Nelson ,  Weston R. Roper ,  Brian L. Westfield

发明人： Richard L. Nelson ,  Weston R. Roper ,  Brian L. Westfield

IPC分类号： H04B300

CPC分类号： G01D11/24 ,  G01D1/00

摘要： An industrial process control system includes a remote transmitter that measures a process variable to transmit data over a process control loop. A local databus interface includes an active current source and is configured to transmit and/or receive data on a local databus. The local databus includes a signaling wire operated to a high signal level during idle communications and modulated between the high and a low signal level during data communication. The active current source is coupled to the signaling wire of the databus to limit current drawn by the signaling wire during a low signal level.

摘要翻译： 工业过程控制系统包括测量通过过程控制回路传输数据的过程变量的远程变送器。 本地数据总线接口包括有源电流源，并配置为在本地数据总线上传输和/或接收数据。 本地数据总线包括在空闲通信期间操作为高信号电平的信号线，并且在数据通信期间在高信号电平和低信号电平之间进行调制。 有源电流源耦合到数据总线的信令线，以限制信号线在低信号电平期间汲取的电流。

公开(公告)号：US09182256B2

公开(公告)日：2015-11-10

申请号：US12832341

申请日：2010-07-08

申请人： David L. Wehrs ,  Gregory J. LeCuyer ,  Jessica Lo ,  Steven J. McCoy ,  Brian L. Westfield

发明人： David L. Wehrs ,  Gregory J. LeCuyer ,  Jessica Lo ,  Steven J. McCoy ,  Brian L. Westfield

IPC分类号： G01R11/17 ,  G01R11/16 ,  G06F3/00 ,  G06F3/01 ,  G01D21/00 ,  G05B19/042

CPC分类号： G01D21/00 ,  G05B19/0423 ,  G05B2219/24069

摘要： A two-wire process variable transmitter for use in an industrial process, including a process variable sensor configured to sense a process variable of a fluid of the industrial process. Output circuitry is configured to provide an output on a two-wire process control loop which is related to the sensed process variable. Loop current measurement circuitry measures a loop current flowing through the two-wire process control loop and terminal voltage measurement circuitry measures a voltage related to a terminal voltage of the process variable transmitter. The terminal voltage can be a voltage measured across an electrical connection of the two-wire process variable transmitter to the two-wire process control loop. Input circuitry is configured to receive a diagnostic command from the two-wire process control loop. A microprocessor configured to perform loop diagnostics on the two-wire process control loop based upon the measured loop current and terminal voltage in response to receipt of a diagnostic command from the two-wire process control loop.

摘要翻译： 一种用于工业过程的二线过程变量变送器，包括被配置为感测工业过程流体的过程变量的过程变量传感器。 输出电路被配置为在与所感测的过程变量相关的二线过程控制回路上提供输出。 回路电流测量电路测量流过两线制过程控制回路的回路电流，并且端子电压测量电路测量与过程变量变送器的端子电压相关的电压。 端子电压可以是两线制过程变量发射机与两线制过程控制回路的电气连接测量的电压。 输入电路配置为从两线制过程控制回路接收诊断命令。 该微处理器被配置为响应于从两线制过程控制回路接收到诊断命令，基于所测量的回路电流和端子电压在两线制过程控制回路上执行循环诊断。

公开(公告)号：US08049361B2

公开(公告)日：2011-11-01

申请号：US12486253

申请日：2009-06-17

申请人： John A. Kielb ,  Brian L. Westfield

发明人： John A. Kielb ,  Brian L. Westfield

IPC分类号： H02J3/00

CPC分类号： H04L12/40045 ,  G05B19/0423 ,  G05B2219/25191 ,  G05B2219/25196 ,  H04L12/40176 ,  H04L2012/4026 ,  Y10T307/445

摘要： A wireless adapter for use with a two-wire process control loop is configured to couple to a process field device in an industrial process control system. The wireless adapter is coupled to the two-wire process control loop and provides wireless communication to the process field device. The adapter includes first and second loop terminals configured to couple in series with the two-wire process control loop. Wireless communication circuitry is coupled to the first and second loop terminals and is adapted to provide wireless communication to the process field device. Loop current bypass circuitry is electrically connected between the first and second loop terminals and is configured to provide a loop current path therebetween in response to an open circuit in wireless communication circuitry.

摘要翻译： 用于两线过程控制回路的无线适配器被配置为耦合到工业过程控制系统中的过程现场设备。 无线适配器耦合到两线制过程控制回路，并向过程现场设备提供无线通信。 适配器包括被配置为与两线制过程控制回路串联耦合的第一和第二回路端子。 无线通信电路耦合到第一和第二环路终端，并且适于向该过程现场设备提供无线通信。 环路电流旁路电路电连接在第一和第二环路端子之间，并且被配置为响应于无线通信电路中的开路而在其间提供环路电流路径。

公开(公告)号：US06307483B1

公开(公告)日：2001-10-23

申请号：US09287775

申请日：1999-04-07

申请人： Brian L. Westfield ,  Stephen D. Anderson ,  Bennett L. Louwagie ,  Todd A. Piechowski ,  Gregory C. Brown

发明人： Brian L. Westfield ,  Stephen D. Anderson ,  Bennett L. Louwagie ,  Todd A. Piechowski ,  Gregory C. Brown

IPC分类号： G08C1904

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

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08787848B2

公开(公告)日：2014-07-22

申请号：US12486269

申请日：2009-06-17

申请人： John A. Kielb ,  Brian L. Westfield ,  Kelly M. Orth

发明人： John A. Kielb ,  Brian L. Westfield ,  Kelly M. Orth

IPC分类号： H01Q11/12 ,  H04B1/04

CPC分类号： G05B19/4185 ,  G01D21/00 ,  G05B2219/31121 ,  G05B2219/33192 ,  G05B2219/34313 ,  G08C17/02 ,  Y02P80/114 ,  Y02P90/18 ,  Y02P90/86

摘要： An adapter for coupling to a process control transmitter of the type used to monitor a process variable in an industrial process includes a first connection configured to couple to a first side of a two wire process control loop, a second connection configured to couple to a second side of the two wire process control loop and in series with a first connection to a process control transmitter, and a third connection configured to couple to a second connection of the process control transmitter. Wireless communication circuitry is coupled to at least the third connection and is configured to provide wireless communication for the process control transmitter. Intrinsic safety circuitry coupled to at least one of the first, second and third connections is configured to limit transfer of electrical energy to a value which is less than an intrinsic safety value.

摘要翻译： 用于耦合到用于监测工业过程中的过程变量的类型的过程控制变送器的适配器包括被配置为耦合到双线过程控制回路的第一侧的第一连接，被配置为耦合到第二连接的第二连接 并且与第一连接到过程控制发送器串联，以及第三连接，其被配置为耦合到过程控制发送器的第二连接。 无线通信电路耦合到至少第三连接，并且被配置为为过程控制发送器提供无线通信。 耦合到第一，第二和第三连接中的至少一个的本质安全电路被配置为将电能的转移限制到小于本征安全值的值。

公开(公告)号：US08694060B2

公开(公告)日：2014-04-08

申请号：US12485189

申请日：2009-06-16

申请人： Joel D. Vanderaa ,  Christina A. Grunig ,  Ronald F. Hurd ,  Brian L. Westfield ,  Chad M. McGuire ,  Steven B. Paullus

发明人： Joel D. Vanderaa ,  Christina A. Grunig ,  Ronald F. Hurd ,  Brian L. Westfield ,  Chad M. McGuire ,  Steven B. Paullus

IPC分类号： H04M1/00 ,  H01Q1/24 ,  H04B1/16

CPC分类号： G08C17/04

摘要： A process device wireless adapter includes a wireless communications module, a metallic housing, and an antenna. The wireless communications module is configured to communicatively couple to a process device and to a wireless receiver. The metallic housing surrounds the wireless communication module and has a first end and a second end. The first end is configured to attach to the process device. In one embodiment, a metallic shield contacts the housing second end such that the metallic shield and the housing form a substantially continuous conductive surface. The antenna is communicatively coupled to the wireless communication module and separated from the wireless communication module by the metallic shield. Preferably, the wireless communications module illustratively includes a printed circuit board that has a length that is greater than its width.

摘要翻译： 处理设备无线适配器包括无线通信模块，金属外壳和天线。 无线通信模块被配置为通信地耦合到处理设备和无线接收器。 金属外壳包围无线通信模块，并具有第一端和第二端。 第一端被配置为附加到处理设备。 在一个实施例中，金属屏蔽件接触壳体的第二端，使得金属屏蔽和壳体形成基本上连续的导电表面。 天线通信地耦合到无线通信模块，并通过金属屏蔽与无线通信模块分离。 优选地，无线通信模块示例性地包括具有大于其宽度的长度的印刷电路板。