公开(公告)号：EP0419562B1

公开(公告)日：1996-04-17

申请号：EP89907550.1

申请日：1989-06-08

Applicant: ROSEMOUNT INC.

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

IPC: G01D5/24 ,  G01R27/26 ,  G01L9/12

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).

公开(公告)号：EP0383827B1

公开(公告)日：1995-02-22

申请号：EP89900018.6

申请日：1988-09-23

Applicant: ROSEMOUNT INC.

Inventor： ORTH, Kelly, M. ,  QUIST, Steven, M. ,  FRICK, Roger, L. ,  PASCHKE, Randy, K.

IPC: H03M1/00 ,  G08C19/16

CPC classification number: G01D3/022 ,  G01L9/125 ,  G01L27/005 ,  G08C19/02 ,  G08C19/16

Abstract: An industrial process control transmitter (10) has a modular construction, with a detector module (16) and an output module (18) electrically connected together by a serial bus (20). The output module (18) includes a microcomputer (40), a modem (44) for digital communication over the two-wire loop, analog output circuitry (46) for controlling loop current, a digital-to-analog converter (48), and a memory (50) for storing calibration factors and D/A characterization factors. The detector module (16) includes several sensors (24, 28, 34) with associated circuitry (26, 32, 36) to convert the sensor signals to digital signals. The detector module (16) also includes a memory (38) which contains characterization factors unique to the sensors (24, 28, 34) which can be used by the microcomputer (40) to correct the digital values provided by the detector circuitry (26, 32, 36).

公开(公告)号：EP0383827A1

公开(公告)日：1990-08-29

申请号：EP89900018.0

申请日：1988-09-23

Applicant: ROSEMOUNT INC.

Inventor： ORTH, Kelly, M. ,  QUIST, Steven, M. ,  FRICK, Roger, L. ,  PASCHKE, Randy, K.

IPC: G08C15 ,  G01D3 ,  G01L9 ,  G01L19 ,  G01L27 ,  G08C19

CPC classification number: G01D3/022 ,  G01L9/125 ,  G01L27/005 ,  G08C19/02 ,  G08C19/16

Abstract: Un transducteur de conduite de processus industriel (10) présente une structure modulaire, et comporte un module détecteur (16) ainsi qu'un module de sortie (18) reliés électriquement par un bus sériel (20). Le module de sortie (18) comprend un micro-ordinateur (40), un modem (44) permettant la communication numérique sur la boucle à deux conducteurs, des circuits de sortie analogiques (46) permettant de commander le courant de boucle, un convertisseur numérique/analogique (48), et une mémoire (50) pour stocker des constantes d'étalonnage et des constantes de caractérisation N/A. Le module détecteur (16) comprend plusieurs capteurs (24, 28, 34) avec leurs circuits associés (26, 32, 36) pour convertir les signaux des capteurs en signaux numériques. Le module détecteur (16) comprend également une mémoire (38) qui renferme des constantes de caractérisation uniques aux capteurs (24, 28, 34), qui peuvent être utilisés par le micro-ordinateur (40) pour corriger les valeurs numériques fournies par les circuits du détecteur (26, 32, 36).

公开(公告)号：EP2074716B1

公开(公告)日：2018-03-14

申请号：EP07838817.0

申请日：2007-09-25

Applicant: Rosemount, Inc.

Inventor： ORTH, Kelly, M. ,  OSTBY, Philip, G.

IPC: H04B7/212 ,  H04W28/14 ,  H04W28/10 ,  H04W28/02 ,  H04L12/825 ,  H04L12/835 ,  H04W48/16 ,  H04W72/12

CPC classification number: H04W28/10 ,  H04L47/26 ,  H04L47/30 ,  H04W28/0278 ,  H04W48/16 ,  H04W72/1205

Abstract: A wireless mesh network is formed by nodes having a regular active schedule for transmitting and receiving messages, and a fast active schedule mode that is locally activated when a demand exists for transmission of a larger number of messages. As each node transmits a message to another node, the transmitting node includes a message buffer queue parameter that indicates the number of messages in the transmitting nodes, pending message queue. The receiving node determines, based upon the message buffer queue parameter received and its own capacity, whether to continue on the regular schedule, or to activate the fast active schedule. If the fast active schedule is activated, the receiving node sends a special acknowledge message back to the sending node, so that both nodes will transmit and receive messages over a fast active schedule link until the message buffer of the sending node has been reduced and the fast active schedule can be deactivated in favor of the regular active schedule.

公开(公告)号：EP2729770B1

公开(公告)日：2018-02-21

申请号：EP12743809.1

申请日：2012-06-26

Applicant: Rosemount Inc.

Inventor： ORTH, Kelly, M.

IPC: G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/25428 ,  G05B2219/33192 ,  G05B2219/34445 ,  Y02P80/11 ,  Y02P80/114 ,  Y10T307/50

Abstract: A wireless field device for use in controlling or monitoring an industrial process, includes a process interface configured to couple to a process fluid. Field device circuitry is coupled to the process interface and configured to measure or control a process variable. Wireless communication circuitry is configured to provide wireless communication. At least one electrical access terminal is configured to provide an electrical connection to circuitry of the field device. A power supply is configured to power the wireless field device. The power supply includes a removable primary power source to provide power to the field device for extended periods of time. A secondary power source is configured to provide power to the field device when the primary power source is removed.

公开(公告)号：EP1994696A2

公开(公告)日：2008-11-26

申请号：EP07751936.1

申请日：2007-02-28

Applicant: Rosemount, Inc.

Inventor： ORTH, Kelly, M.

IPC: H04L12/56 ,  H04L12/28

CPC classification number: H04L12/66 ,  H04L45/22 ,  H04L45/28 ,  H04W40/10 ,  H04W72/12 ,  H04W72/1215 ,  H04W84/22 ,  H04W88/16 ,  H04W88/18 ,  H04W92/02

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.

公开(公告)号：EP1966566A2

公开(公告)日：2008-09-10

申请号：EP06845048.5

申请日：2006-12-11

Applicant: Rosemount, Inc.

Inventor： ORTH, Kelly, M.

IPC: G01D9/00 ,  G08C19/02

CPC classification number: G08C19/02

Abstract: An industrial process transmitter 102 for transmitting a process variable on a two-wire process control loop 106 includes, a loop current control 162 to control a loop current level on the two-wire process control loop 106 that is related to the process variable. Power is provided to primary circuitry 164 of the process transmitter 102. A secondary current control circuit 166 limits current delivered to secondary circuitry 168.

公开(公告)号：EP1896910A1

公开(公告)日：2008-03-12

申请号：EP06774208.0

申请日：2006-06-27

Applicant: Rosemount, Inc.

Inventor： ORTH, Kelly, M.

IPC: G05B19/042

CPC classification number: G05B19/4185 ,  G01D21/00 ,  G05B2219/33192 ,  G05B2219/34313 ,  Y02P90/18

Abstract: A field device (14) for use in an industrial process control or monitoring system (10) includes terminals (56H, 56L) configured to connect to a two-wire process control loop (16) configured to carry data and to provide power. In one embodiment, RF circuitry (22) in the field device (14) is configured for radio frequency communication having variable power consumption. In another embodiment, the RF circuitry (22) is coupled to the field device (14) through a separate digital communication bus (100) . A method of modulating the power of RF communication based upon a process communication signal is also provided.

公开(公告)号：EP1733365A2

公开(公告)日：2006-12-20

申请号：EP05724798.3

申请日：2005-03-07

Applicant: Rosemount, Inc.

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

IPC: G08C19/02 ,  G01D11/24 ,  G01D3/08

CPC classification number: G01D11/24 ,  G01D3/08 ,  G01D11/245

Abstract: A process variable transmitter (100) that preferably includes a transmitter output circuit (400, 300) that provides bidirectional HART and controller area network communication transceiver lines (LOOP+, LOOP-, CAN, GND). The transmitter output circuit also includes sensor circuit interface contacts (202) . An isolated circuit (201) couples to the sensor circuit interface contacts. The isolated circuit includes sensor circuitry sensing a process variable. The isolated circuit further comprises a galvanic isolation barrier (204) galvanically isolating the sensor circuitry from the HART and controller area network transceiver lines. A stacked power supply (Figs. 9A-9B) provides power management. Other aspects may include a controller area network current limiter diagnostic output (934), timed sequencing of microcontroller startup and shutdown, a local operator interface and power management.

公开(公告)号：EP0717869B1

公开(公告)日：2000-02-23

申请号：EP94925839.6

申请日：1994-08-12

Applicant: ROSEMOUNT INC.

Inventor： BRODEN, David, A. ,  ORTH, Kelly, M. ,  BORGESON, Dale, W. ,  LANCTOT, Jane, B. ,  VOEGELE, Kevin, D.

IPC: G08C19/02

CPC classification number: G08C19/02