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    PROCESS CONTROL WITH DATA BUS PROTOCOL
    1.
    发明申请
    PROCESS CONTROL WITH DATA BUS PROTOCOL 审中-公开
    使用数据总线协议进行过程控制

    公开(公告)号：WO1998014850A1

    公开(公告)日：1998-04-09

    申请号：PCT/US1997017009

    申请日：1997-09-23

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  TETZLAFF, David, E. ,  WARRIOR, Jogesh ,  MAALOUF, Gabriel, A.

    IPC: G05B19/418

    CPC classification number: G05B19/0421 ,  G05B15/02 ,  G05B19/4185 ,  G05B2219/25145 ,  Y02P90/18

    Abstract: The present invention includes a process control instrument (100) having an improved data bus protocol for facilitating communications between master and slave nodes. The process control instrument (100) includes a microprocessor (200) operating in accordance with the SPI data bus protocol, first and second peripheral devices (204, 206), and a data bus (220) coupled to the microprocessor and the first and second peripheral devices. The improved data bus protocol used in the process control instruments of the present invention provides numerous advantages such as reduced printed circuit board space requirements and greater interchangeability of peripheral and master node components.

    Abstract translation: 本发明包括具有改进的数据总线协议以便于主节点和从节点之间的通信的过程控制仪器（100）。 过程控制仪器（100）包括根据SPI数据总线协议操作的微处理器（200），第一和第二外围设备（204,206）以及耦合到微处理器的数据总线（220）和第一和第二 外围设备。 在本发明的过程控制仪器中使用的改进的数据总线协议提供了许多优点，例如减少了印刷电路板空间要求以及外围和主节点组件的更大可互换性。

    SYSTEM FOR CALIBRATING ANALOG-TO-DIGITAL CONVERTER
    2.
    发明申请
    SYSTEM FOR CALIBRATING ANALOG-TO-DIGITAL CONVERTER 审中-公开
    用于校准模拟数字转换器的系统

    公开(公告)号：WO1996010297A1

    公开(公告)日：1996-04-04

    申请号：PCT/US1995011533

    申请日：1995-09-11

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  GOETZINGER, Charles, E. ,  TETZLAFF, David, E.

    IPC: H03M01/52

    CPC classification number: H03M1/1009 ,  H03M1/14 ,  H03M1/52 ,  H03M1/60

    Abstract: A calibrating system calibrates an analog-to-digital converter which has an integrator (20) and first and second reference current sources (IL, IS). A quantity of charge is accumulated in the integrator (20). The quantity of charge is removed from the integrator (20) by applying the first and second reference currents (IL, IS) to the integrator (20) for first and second time periods until the accumulated charge reaches a threshold level. The quantity of charge is reaccumulated in the integrator (20) and again removed by applying the first and second reference currents (IL, IS) for third and fourth time periods wherein the first and second time periods are different from the third and fourth time periods. The relative magnitude of the first and second reference currents (IL, IS) is determined based on the first, second, third and fourth time periods.

    Abstract translation: 校准系统校准具有积分器（20）和第一和第二参考电流源（IL，IS）的模拟 - 数字转换器。 在积分器（20）中累积一定量的电荷。 通过在第一和第二时间段向积分器（20）施加第一和第二参考电流（IL，IS）直到累积电荷达到阈值水平，从积分器（20）中去除电荷量。 在积分器（20）中重新累积电荷量，并且通过在第三和第四时间段施加第一和第二参考电流（IL，IS）并再次去除其中第一和第二时间段不同于第三和第四时间段 。 基于第一，第二，第三和第四时间段确定第一和第二参考电流（IL，IS）的相对幅度。

    DATA BUS COMMUNICATION TECHNIQUE FOR FIELD INSTRUMENT
    3.
    发明申请
    DATA BUS COMMUNICATION TECHNIQUE FOR FIELD INSTRUMENT 审中-公开
    现场仪表数据总线通讯技术

    公开(公告)号：WO1998014885A1

    公开(公告)日：1998-04-09

    申请号：PCT/US1997016822

    申请日：1997-09-23

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  TETZLAFF, David, E.

    IPC: G06F13/42

    CPC classification number: G06F13/4072 ,  G06F13/4295

    Abstract: An apparatus for and method of serially transmitting a message between first and second devices (302, 304) coupled to a data or clock line (310) in a process control device (10) is disclosed. A first transition (212) of the data or clock signal is generated during a signal cycle. A second transition (214) of the signal is generated during the first signal cycle in order to control the duty cycle of the signal during the first signal cycle. If the duty cycle of the signal during the first signal cycle has a first value, then the first signal cycle is representative of a first data state transmitted between the first and second devices (302, 304). If the duty cycle of the signal during the first signal cycle has a second value, then the first signal cycle is representative of a second data state transmitted between the first and second devices (302, 304).

    Abstract translation: 公开了一种在过程控制设备（10）中耦合到数据或时钟线（310）的第一和第二设备（302,304）之间串行传输消息的设备和方法。 在信号周期期间产生数据或时钟信号的第一转换（212）。 在第一信号周期期间产生信号的第二转换（214），以便在第一信号周期期间控制信号的占空比。 如果在第一信号周期期间信号的占空比具有第一值，则第一信号周期表示在第一和第二设备（302,304）之间传输的第一数据状态。 如果在第一信号周期期间信号的占空比具有第二值，则第一信号周期表示在第一和第二设备（302,304）之间传输的第二数据状态。

    DATA BUS COMMUNICATION TECHNIQUE FOR FIELD INSTRUMENT
    5.
    发明授权
    DATA BUS COMMUNICATION TECHNIQUE FOR FIELD INSTRUMENT 失效
    数据通信方法对于现场仪表

    公开(公告)号：EP0868698B1

    公开(公告)日：2004-06-23

    申请号：EP97944343.9

    申请日：1997-09-23

    Applicant: ROSEMOUNT INC.

    Inventor： TETZLAFF, David, E.

    IPC: G06F13/42

    CPC classification number: G06F13/4072 ,  G06F13/4295

    Abstract: An apparatus for and method of serially transmitting a message between first and second devices (302, 304) coupled to a data or clock line (310) in a process control device (10) is disclosed. A first transition (212) of the data or clock signal is generated during a signal cycle. A second transition (214) of the signal is generated during the first signal cycle in order to control the duty cycle of the signal during the first signal cycle. If the duty cycle of the signal during the first signal cycle has a first value, then the first signal cycle is representative of a first data state transmitted between the first and second devices (302, 304). If the duty cycle of the signal during the first signal cycle has a second value, then the first signal cycle is representative of a second data state transmitted between the first and second devices (302, 304).

    PROCESS CONTROL WITH DATA BUS PROTOCOL
    7.
    发明授权
    PROCESS CONTROL WITH DATA BUS PROTOCOL 失效
    具有数据总线过程控制

    公开(公告)号：EP0864122B1

    公开(公告)日：2004-04-14

    申请号：EP97942672.3

    申请日：1997-09-23

    Applicant: ROSEMOUNT INC.

    Inventor： TETZLAFF, David, E. ,  WARRIOR, Jogesh ,  MAALOUF, Gabriel, A.

    IPC: G05B19/418 ,  G05B15/02

    CPC classification number: G05B19/0421 ,  G05B15/02 ,  G05B19/4185 ,  G05B2219/25145 ,  Y02P90/18

    Abstract: The present invention includes a process control instrument (100) having an improved data bus protocol for facilitating communications between master and slave nodes. The process control instrument (100) includes a microprocessor (200) operating in accordance with the SPI data bus protocol, first and second peripheral devices (204, 206), and a data bus (220) coupled to the microprocessor and the first and second peripheral devices. The improved data bus protocol used in the process control instruments of the present invention provides numerous advantages such as reduced printed circuit board space requirements and greater interchangeability of peripheral and master node components.

    PROCESS CONTROL TRANSMITTER WITH ADAPTIVE ANALOG-TO-DIGITAL CONVERTER
    9.
    发明公开
    PROCESS CONTROL TRANSMITTER WITH ADAPTIVE ANALOG-TO-DIGITAL CONVERTER 失效
    具有自适应模拟数字转换器过程控制变送器

    公开(公告)号：EP1012550A1

    公开(公告)日：2000-06-28

    申请号：EP98906652.7

    申请日：1998-02-23

    Applicant: ROSEMOUNT INC.

    Inventor： TETZLAFF, David, E. ,  ROSS, James, P.

    IPC: G01L7/00 ,  G01V1/00 ,  G06F9/46 ,  G08G1/01 ,  H04K1/00 ,  G01B5/00

    CPC classification number: G01L9/12 ,  H03M3/392 ,  H03M3/462

    Abstract: A transmitter (10) for use in a process control setting includes a sensor (18) adapted to couple to a process and provide a sensor output (19) related to a parameter of the process. A modulator (50) coupled to the sensor output (19) responsively provides a digital bit stream output (52) representative of the sensor output (19). A filter (54) provides a current decimation output. A comparator (56) compares a previous decimation output with the current decimation output. Circuitry (28) is provided for transmitting an output related to the parameter based upon the current decimation.

    DATA BUS COMMUNICATION TECHNIQUE FOR FIELD INSTRUMENT
    10.
    发明公开
    DATA BUS COMMUNICATION TECHNIQUE FOR FIELD INSTRUMENT 失效
    数据通信方法对于现场仪表

    公开(公告)号：EP0868698A1

    公开(公告)日：1998-10-07

    申请号：EP97944343.0

    申请日：1997-09-23

    Applicant: ROSEMOUNT INC.

    Inventor： TETZLAFF, David, E.

    IPC: G06F13

    CPC classification number: G06F13/4072 ,  G06F13/4295

    Abstract: An apparatus for and method of serially transmitting a message between first and second devices (302, 304) coupled to a data or clock line (310) in a process control device (10) is disclosed. A first transition (212) of the data or clock signal is generated during a signal cycle. A second transition (214) of the signal is generated during the first signal cycle in order to control the duty cycle of the signal during the first signal cycle. If the duty cycle of the signal during the first signal cycle has a first value, then the first signal cycle is representative of a first data state transmitted between the first and second devices (302, 304). If the duty cycle of the signal during the first signal cycle has a second value, then the first signal cycle is representative of a second data state transmitted between the first and second devices (302, 304).

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