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    WIRELESS MESH NETWORKS
    21.
    发明专利
    WIRELESS MESH NETWORKS 未知

    公开(公告)号：CA2704044A1

    公开(公告)日：2007-09-13

    申请号：CA2704044

    申请日：2007-02-28

    Applicant: ROSEMOUNT INC

    Inventor： ORTH KELLY M

    IPC: H04L12/56 ,  H04L12/28

    Abstract: A wireless network system includes overlapping wireless mesh networks Net A-Net D. Nodes that are members of more than one mesh network are capable of communicating with the gateways GWA-GWD of each of those mesh networks Net A-Net D, which allows sharing information between interrelated control systems through the wireless network system.

    23.
    发明专利
    未知

    公开(公告)号：BR0014360A

    公开(公告)日：2002-06-11

    申请号：BR0014360

    申请日：2000-09-26

    Applicant: ROSEMOUNT INC

    Inventor： BEHM STEVEN M ,  KRUEGER WILLIAM B ,  ORTH KELLY M ,  BREKKEN JEFFREY C

    IPC: G01L19/04 ,  G01D1/00 ,  G01L9/00 ,  H01R29/00

    Abstract: A pressure transmitter with a transmitter housing having an outer wall providing thermal resistance. The outer wall extends from an isothermal island at a first end to a heat sink island at a second end. The isothermal island includes a fluid inlet, and pressure and temperature sensors. The heat sink island includes a primary heat load device that is heat sunk to an outer shell of an electrical connector. The connector contacts carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device. A circuit board controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.

    FIELD DEVICE INCORPORATING CIRCUIT CARD ASSEMBLY AS ENVIRONMENTAL AND EMI/RFI SHIELD
    25.
    发明专利
    FIELD DEVICE INCORPORATING CIRCUIT CARD ASSEMBLY AS ENVIRONMENTAL AND EMI/RFI SHIELD 未知

    公开(公告)号：CA2579818A1

    公开(公告)日：2006-03-30

    申请号：CA2579818

    申请日：2005-09-15

    Applicant: ROSEMOUNT INC

    Inventor： MCGUIRE CHAD M ,  ORTH KELLY M

    IPC: H05K1/02

    Abstract: A field hardened industrial device is described with a housing of the device having electrically conductive walls surrounding a cavity with an open end. An electronics assembly is adapted to fit within the cavity. The device includes a circuit card assembly, which is a multi-layered printed wiring board with pass-through electrical connections and an embedded ground plane electrically coupled to the housing to shield the electronics assembly from electromagnetic interference and to provide environmental protection to the electronics assembly.

    27.
    发明专利
    未知

    公开(公告)号：DE495001T1

    公开(公告)日：1996-01-18

    申请号：DE90916636

    申请日：1990-10-01

    Applicant: ROSEMOUNT INC

    Inventor： WARRIOR JOGESH ,  JACOBSON VINCENT C ,  ORTH KELLY M ,  TIELENS CRAIG R

    IPC: G08C19/02 ,  G05B15/02 ,  G05B19/418 ,  H04B3/50 ,  H04Q9/02 ,  G05B15/00

    Abstract: A smart field-mounted control unit, for controlling a process, receives signals and sends a command output over a two-wire circuit which powers the control unit. An input section receives the signals, which can be instructions representative of commands or instruction sets, process variables sensed by external control units or setpoints representative of a desired process state. The instructions are representative of a control requirement of the process and adjust a controlling section in the control unit to generate the command output in conformance with the control requirement. The command output can be a function of the difference between the process setpoint and a process variable, or a function of a linear combination of a process variable and its calculated time integral and time derivative functions. A sensing section in the control unit can sense and scale a process variable for generating the command output as well. The control unit can include a regulator section, controlled by the command output, which regulates application of a mechanical, hydraulic, pneumatic or electromagnetic force applied to the process.

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