中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

29 records (took 0.02 seconds)

    CHARGE BALANCED FEEDBACK TRANSMITTER
    1.
    发明申请
    CHARGE BALANCED FEEDBACK TRANSMITTER 审中-公开
    充电平衡反馈发射机

    公开(公告)号：WO1989012235A1

    公开(公告)日：1989-12-14

    申请号：PCT/US1989002508

    申请日：1989-06-08

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  SCHULTE, John, P. ,  ORTH, Kelly, M. ,  FRICK, Roger, L. ,  WESTFIELD, Brian, L. ,  PASCHKE, Randy, K.

    IPC: G01R11/52

    CPC classification number: G01L9/12 ,  G01D5/24 ,  G01R27/2605

    Abstract: A charge balanced feedback type transmitter (10) generates charge packets representative of a sensed parameter. Improved performance is achieved by the addition of resistance (R1), (R2) connected between a charge packet generating reactance (C1), (C2), (CL1), (CL2) and an integrator (30) to reduce the effects of noise caused by switching transients and by ground noise which is coupled to the charge packet generating circuitry (12) by stray capacitance. The charge packets are integrated by the integrator (30), and the integrator output is supplied from a selective basis to the input of a comparator (32). The output of the comparator (32) is used to control the application of balance. The input of the comparator (32) is selectively connected to the output of the integrator (30), to a first supply voltage, or to a second supply voltage to ensure a stable output of the comparator (32) at a critical time when charge is being supplied to the integrator (30).

    PROCESS VARIABLE TRANSMITTER WITH TWO-WIRE PROCESS CONTROL LOOP DIAGNOSTICS
    2.
    发明申请
    PROCESS VARIABLE TRANSMITTER WITH TWO-WIRE PROCESS CONTROL LOOP DIAGNOSTICS 审中-公开

    公开(公告)号：WO2011005938A3

    公开(公告)日：2011-01-13

    申请号：PCT/US2010/041338

    申请日：2010-07-08

    Applicant: ROSEMOUNT INC. ,  LECUYER, Gregory, J. ,  WEHRS, David, L. ,  LO, Jessica ,  MCCOY, Steven, J. ,  WESTFIELD, Brian, L.

    Inventor： LECUYER, Gregory, J. ,  WEHRS, David, L. ,  LO, Jessica ,  MCCOY, Steven, J. ,  WESTFIELD, Brian, L.

    IPC: G01D21/00 ,  G05B19/042 ,  G08C19/02 ,  G05B23/02

    Abstract: A two-wire process variable transmitter (12) for use in an industrial process, including a process variable sensor (14) configured to sense a process variable of a fluid of the industrial process. Output circuitry (36) is configured to provide an output on a two-wire process control loop (18) which is related to the sensed process variable. Loop current measurement circuitry (36) measures a loop current flowing through the two-wire process control loop (18) and terminal voltage measurement circuitry (36) measures a voltage related to a terminal voltage of the process variable transmitter (12). The terminal voltage can be a voltage measured across an electrical connection of the two-wire process variable transmitter (12) to the two-wire process control loop (18). Input circuitry (36) is configured to receive a diagnostic command from the two-wire process control loop (18). A microprocessor (30) configured to perform loop diagnostics on the two-wire process control loop (18) based upon the measured loop current and terminal voltage in response to receipt of a diagnostic command from the two-wire process control loop (18).

    CONVERSION CIRCUIT FOR PROCESS CONTROL SYSTEM
    3.
    发明申请
    CONVERSION CIRCUIT FOR PROCESS CONTROL SYSTEM 审中-公开
    过程控制系统转换电路

    公开(公告)号：WO1996041243A1

    公开(公告)日：1996-12-19

    申请号：PCT/US1996008128

    申请日：1996-05-31

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  WESTFIELD, Brian, L. ,  ANDERSON, Stephen, D. ,  LOUWAGIE, Bennett, L. ,  PIECHOWSKI, Todd, A.

    IPC: G05B19/042

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

    Abstract: Conversion circuitry (40) for use in a process control system (10) is adapted for coupling to a primary process control loop (26). Digital receiver circuitry (46, 52) in the conversion circuitry (40) receives a digital signal transmitted over the primary process control loop (26) from a field transmitter (22) and responsively provides a digital output. A microprocessor (50) receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry (62) for coupling to a secondary process control loop (58) receives the secondary loop control output from the microprocessor (50) and responsively controls current flowing through the secondary process control loop (58). The current flowing through the secondary process control loop (58) is related to the digital signal transmitted by the field transmitter (22).

    Abstract translation: 用于过程控制系统（10）的转换电路（40）适于耦合到主过程控制回路（26）。 转换电路（40）中的数字接收器电路（46,52）从现场发射器（22）接收通过主要过程控制回路（26）发送的数字信号，并且响应地提供数字输出。 微处理器（50）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（58）的二次回路控制电路（62）接收来自微处理器（50）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（58）的电流。 流过二级过程控制回路（58）的电流与由现场发射机（22）发送的数字信号有关。

    FIELD TRANSMITTER BUILT-IN TEST EQUIPMENT
    4.
    发明申请
    FIELD TRANSMITTER BUILT-IN TEST EQUIPMENT 审中-公开
    现场发射机内置测试设备

    公开(公告)号：WO1995008123A1

    公开(公告)日：1995-03-23

    申请号：PCT/US1994009200

    申请日：1994-08-15

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  VOEGELE, Kevin, D. ,  LANCTOT, Jane, B. ,  WESTFIELD, Brian, L.

    IPC: G01R27/14

    CPC classification number: G01R27/14 ,  G01R31/2829

    Abstract: An improved error detection for microprocessor-based transmitters in two-wire process control loops operating in the process control industry. In particular, techniques are shown which are useful in solving malfunctions or failures of microprocessor-based transmitters. When the transmitter (6) is energized, the impedance of the process loop cabling is resolved and stored, displayed or transmitted as desired. The loop impedance is used to calculate potential of a power supply used to power the control loop. This information is used in testing the two-wire loop.

    Abstract translation: 在过程控制行业中运行的两线过程控制回路中基于微处理器的变送器的改进的误差检测。 特别地，示出了在解决基于微处理器的发射机的故障或故障中有用的技术。 当发射机（6）通电时，过程回路布线的阻抗被解决并根据需要进行存储，显示或传输。 环路阻抗用于计算用于为控制回路供电的电源的电位。 此信息用于测试双线回路。

    PROCESS FIELD DEVICE TEMPERATURE CONTROL
    5.
    发明申请
    PROCESS FIELD DEVICE TEMPERATURE CONTROL 审中-公开
    过程现场设备温度控制

    公开(公告)号：WO2007041188A1

    公开(公告)日：2007-04-12

    申请号：PCT/US2006/037775

    申请日：2006-09-26

    Applicant: ROSEMOUNT INC. ,  WESTFIELD, Brian, L. ,  ORTH, Kelly, M.

    Inventor： WESTFIELD, Brian, L. ,  ORTH, Kelly, M.

    IPC: G05B19/042 ,  G05D23/19 ,  G01L19/00

    CPC classification number: G05B19/0423 ,  G01L19/04 ,  G05B2219/25428 ,  G05B2219/31121 ,  G05D23/19

    Abstract: A field device system (12) for use in an industrial process includes a field device (14) configured to couple to the industrial process and monitor or control the industrial process. The field device provides a temperature control signal output related to a temperature of the field device. A heater (24) coupled to the field device (14) heats the field device (14) in response to the temperature control signal.

    Abstract translation: 用于工业过程的现场设备系统（12）包括被配置为耦合到工业过程并监视或控制工业过程的现场设备（14）。 现场设备提供与现场设备的温度相关的温度控制信号输出。 耦合到现场设备（14）的加热器（24）响应于温度控制信号加热现场设备（14）。

    RF ADAPTER FOR FIELD DEVICE WITH LOOP CURRENT BYPASS
    7.
    发明申请
    RF ADAPTER FOR FIELD DEVICE WITH LOOP CURRENT BYPASS 审中-公开
    具有环路电流旁路的现场设备的RF适配器

    公开(公告)号：WO2009154749A1

    公开(公告)日：2009-12-23

    申请号：PCT/US2009/003619

    申请日：2009-06-17

    Applicant: ROSEMOUNT INC. ,  KIELB, John, A. ,  WESTFIELD, Brian, L.

    Inventor： KIELB, John, A. ,  WESTFIELD, Brian, L.

    IPC: H04L12/40 ,  G05B19/418

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

    Abstract: A wireless adapter for use with a two-wire process control loop (22) is configured to couple to a process field device (12) in an industrial process control system. The wireless adapter (30) is coupled to the two-wire process control loop (22) and provides wireless communication to the process field device (12). The adapter (30) includes first and second loop terminals configured to couple in series with the two-wire process control loop (22). Wireless communication circuitry (155) is coupled to the first and second loop terminals and is adapted to provide wireless communication to the process field device (12). Loop current bypass circuitry (164) 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 (155).

    Abstract translation: 用于与二线过程控制回路（22）一起使用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（12）。 无线适配器（30）耦合到两线制过程控制回路（22）并提供到过程现场设备（12）的无线通信。 适配器（30）包括被配置为与两线制过程控制回路（22）串联耦合的第一和第二回路端子。 无线通信电路（155）耦合到第一和第二环路终端，并且适于向过程现场设备（12）提供无线通信。 环路电流旁路电路（164）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（155）中的开路而在其间提供环路电流路径。

    RF ADAPTER FOR FIELD DEVICE WITH LOW VOLTAGE INTRINSIC SAFETY CLAMPING
    8.
    发明申请
    RF ADAPTER FOR FIELD DEVICE WITH LOW VOLTAGE INTRINSIC SAFETY CLAMPING 审中-公开

    公开(公告)号：WO2009154748A3

    公开(公告)日：2009-12-23

    申请号：PCT/US2009/003616

    申请日：2009-06-17

    Applicant: ROSEMOUNT INC. ,  KIELB, John, A. ,  WESTFIELD, Brian, L. ,  ORTH, Kelly, M.

    Inventor： KIELB, John, A. ,  WESTFIELD, Brian, L. ,  ORTH, Kelly, M.

    IPC: G05B19/418 ,  H04L12/56

    Abstract: An adapter (300) for coupling to a process control transmitter (308) 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 (302), a second connection configured to couple to a second side of the two wire process control loop (302) and in series with a first connection to a process control transmitter (308), and a third connection configured to couple to a second connection of the process control transmitter (308). Wireless communication circuitry is coupled to at least the third connection and is configured to provide wireless communication for the process control transmitter (308). Intrinsic safety circuitry (460) 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.

    THREE WIRE LOW POWER TRANSMITTER
    9.
    发明申请
    THREE WIRE LOW POWER TRANSMITTER 审中-公开
    三线低功率发射机

    公开(公告)号：WO1993006576A1

    公开(公告)日：1993-04-01

    申请号：PCT/US1992007038

    申请日：1992-08-20

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  ANDERSON, Stephen, D. ,  FRICK, Roger, L. ,  MONZO, Glen, E. ,  WESTFIELD, Brian, L.

    IPC: G08C19/00

    CPC classification number: G08C19/02

    Abstract: A three wire transmitter (50) bidirectionally communicates AC signals to and from a first external device (59) and sends DC signals to a second external device (59). The transmitter (50) includes a sensor circuit (52) and a communication circuit (70), both energized from power (66) and common (69) terminals of the transmitter (50). The communication circuit (70) receives a sensor output indicating a sensed process variable and provide DC and AC signals to a signal terminal (68) which connects to both external devices (59), and also receives AC signals from the first external device (59). The DC signal is representative of the sensed process variable and the AC signal is digitally representative of the sensed process variable and of transmitter data selected by the received AC signal.

Patent Agency Ranking