公开(公告)号：EP3014371B1

公开(公告)日：2017-05-17

申请号：EP14733459.3

申请日：2014-05-29

申请人： Rosemount Inc.

发明人： FLANAGAN, Peter, J. ,  TYSON, David, G. ,  SCHULTE, John, P. ,  KOROLEV, Eugene

IPC分类号： G01D21/00 ,  G05B21/02 ,  G05B23/02

CPC分类号： H04L25/08 ,  G01D21/00 ,  G05B21/02 ,  G05B23/0221 ,  H04L7/0091 ,  H04L25/06 ,  H04L25/068

公开(公告)号：EP2647218A1

公开(公告)日：2013-10-09

申请号：EP11793912.4

申请日：2011-11-17

申请人： Rosemount, Inc.

发明人： KOROLEV, Eugene ,  SCHULTE, John, P.

IPC分类号： H04Q9/00 ,  G05B19/418

CPC分类号： H04Q9/00 ,  H04B1/7107 ,  H04B3/32 ,  H04B15/02 ,  H04L25/0328 ,  H04Q2209/10 ,  H04Q2209/40

摘要： A field device for use in an industrial process, includes a process interface element configured to measure or control a process variable. Communication circuitry is configured to communicate with another location. A communication system is configured to provide communications between at least two components in the field device. A signal inverter couples an inverted signal from the communication system to other circuitry to thereby reduce interference received by the other circuitry.

摘要翻译： 用于工业过程的现场设备包括被配置为测量或控制过程变量的过程接口元件。 通信电路被配置为与另一位置通信。 通信系统被配置为提供现场设备中的至少两个组件之间的通信。 信号反相器将来自通信系统的反相信号耦合到其他电路，从而减少由另一电路接收的干扰。

公开(公告)号：EP2201432A1

公开(公告)日：2010-06-30

申请号：EP08838607.3

申请日：2008-10-08

申请人： Rosemount, Inc.

发明人： KLOSINSKI, Andrew, J. ,  SCHULTE, John, P.

IPC分类号： G05B23/02 ,  G01L9/00

CPC分类号： G05B23/0235 ,  G01L9/0072 ,  G01L23/125

摘要： A transmitter (12) for use in an industrial process control system (10), includes a process coupling (75) configured to couple to a process fluid. A sensor housing (100) has a cavity (102) formed therein which is in fluidic communication with the process fluid. A diaphragm (104) in the cavity (102) isolates a portion (108) of the cavity from the process fluid and moves in response to pressure applied by the process fluid. A first electrode (120) in the isolated portion (108) of the cavity (102) is configured to form a first capacitance with the diaphragm (104) and a second electrode (122) in the isolated portion (108) of the cavity configured to form a second capacitance with the diaphragm (104). Measurement circuitry (74) coupled to the first and second capacitance measures a pressure P of the process fluid based upon at least one of the first capacitance and second capacitance. The measurement circuitry (74) further configured to measure vibrations (70) in the process fluid based upon at least one of the first capacitance and second capacitance.

公开(公告)号：EP0493528A1

公开(公告)日：1992-07-08

申请号：EP90915961.0

申请日：1990-08-30

申请人： ROSEMOUNT INC.

发明人： FRICK, Roger, L. ,  SCHULTE, John, P.

IPC分类号： G01L9 ,  G01L1 ,  G01R27

CPC分类号： G01L1/2256 ,  G01L1/2281

摘要： Un convertisseur de tension-numérique comprend un circuit de stockage (34) couplé aux signaux d'entrée de tension afin de produire une capacité de stockage présentant une pluralité d'intensités pouvant être sélectionnées. Un circuit (36) d'accumulation de charge accumule la charge provenant du circuit de stockage (34) de sorte que la charge totale accumulée est proportionnelle à l'intégralité de la quantité de charge déchargée par le circuit de stockage (34). Un circuit de commande (38) est couplé à la sortie d'équilibrage afin d'émettre des signaux de rétroaction en fonction de la sortie d'équilibrage, de manière à charger et à décharger périodiquement la capacité de stockage. Un circuit de calcul (44) est couplé au circuit de rétroaction afin de compter le nombre de paquets chargés produits dans un cycle de mesure. Un circuit de sortie (28) est couplé audit circuit de calcul (44), et produit une sortie indicative des signaux d'entrée de tension, en fonction du nombre de paquets comptés.

公开(公告)号：EP0303615A1

公开(公告)日：1989-02-22

申请号：EP87903103.0

申请日：1987-04-16

申请人： ROSEMOUNT INC.

发明人： FRICK, Roger, L. ,  SCHULTE, John, P.

IPC分类号： G01R ,  G01L9 ,  G01R11 ,  G01R27 ,  G01R29

CPC分类号： G01R29/24 ,  G01L9/125

摘要： Un circuit de mesure (10) fournit un signal de sortie en fonction d'un signal d'entrée. Le circuit de mesure comporte un générateur de charge (18) qui fournit à un élément de mesure (34) des paquets de charge en fonction du signal d'entrée. Cet élément de mesure (34) mesure la charge reçue et délivre un signal de mesure en fonction de cette dernière. Le signal de mesure (28) est couplé à un circuit de réaction (9) qui assure le couplage à des commutateurs du générateur de charge (18) afin de réguler la production de paquets de charge. Le circuit de réaction (9) délivre au moins un signal de sortie représentatif de la quantité ou du nombre de paquets de charge fournis.

公开(公告)号：EP2255259A1

公开(公告)日：2010-12-01

申请号：EP09720904.3

申请日：2009-02-19

申请人： Rosemount, Inc.

发明人： SCHULTE, John, P.

IPC分类号： G05B19/042

CPC分类号： G05B19/0423 ,  G05B2219/25428 ,  G08C19/02 ,  G08C2201/10

摘要： A field transmitter (250) includes field device circuitry (216) configured to measure or control a process variable. A first process control loop terminal (202) is configured to couple to a two-wire process control loop (206) which carries a loop current I
loop . A second process control loop terminal (204) configured to couple to the two-wire process control loop (206). A switching regulator (212) has an input and an output. The output is coupled to the transmitter circuitry (216) and arranged to provide power to the transmitter circuitry (216). A variable voltage source (232) having an input electrically coupled to the first process control loop terminal (202), and a voltage output coupled to the input of the switching regulator (212) and a control input. The voltage output is a function of the control input.

公开(公告)号：EP0303615B2

公开(公告)日：2006-01-11

申请号：EP87903103.7

申请日：1987-04-16

申请人： ROSEMOUNT INC.

发明人： FRICK, Roger, L. ,  SCHULTE, John, P.

IPC分类号： G01R11/52 ,  G01R27/26 ,  G01L9/12

CPC分类号： G01R29/24 ,  G01L9/125

摘要： A measurement circuit (10) provides an output signal as a function of an input signal. The measurement circuit includes a charge generator (18) which provides packets of charge as a function of the input signal to a measurement element (34). The measurement element (34) measures the charge provided and provides a measurement signal as a function of the charge received. The measurement signal (28) is coupled to a feedback circuit (9) which couples to switches in the charge generator (18) to control production of charge packets. The feedback circuit (9) provides at least one output signal indicative of the quantity or number of charge packets provided.

公开(公告)号：EP0608355B1

公开(公告)日：1999-08-25

申请号：EP92922499.6

申请日：1992-10-13

申请人： ROSEMOUNT INC.

发明人： LOFGREN, Lyle, E. ,  SCHULTE, John, P. ,  SEEMAN, Brian

IPC分类号： G01R27/26 ,  G01L9/12

CPC分类号： G01L9/125

公开(公告)号：EP0852781A1

公开(公告)日：1998-07-15

申请号：EP96933777.0

申请日：1996-09-13

申请人： ROSEMOUNT INC.

发明人： FRICK, Roger, L. ,  SCHULTE, John, P. ,  TEWFIK, Ahmed, H.

IPC分类号： G08C19

CPC分类号： G08C19/10 ,  G08C19/02

摘要： A transmitter (10) in a process control system includes input/output circuitry (74) for coupling to a process control loop (12). A first sensor (40L) having a first impedance is responsive to a first sensed parameter. A second sensor (40H) having a second impedance is responsive to a sensed parameter. First and second excitation signals (S1, S2) are applied to the first and second sensors (40L, 40H). A summing node (44) sums the outputs (OL, OH) of the first and second sensors (40L, 40H). An analog to digital converter (54) provides a digital output representative of the summed signals. Digital signal processing circuitry (70) coupled to the analog to digital converter (54) provides an output related to the outputs (OL, OH) of the first and second sensors (40L, 40H) to the input/output circuitry (72) for transmission over the process control loop (12).

摘要翻译： 过程控制系统中的发送器（10）包括用于耦合到过程控制回路（12）的输入/输出电路（74）。 具有第一阻抗的第一传感器（40L）响应于第一感测参数。 具有第二阻抗的第二传感器（40H）响应于感测参数。 第一和第二激励信号（S1，S2）被施加到第一和第二传感器（40L，40H）。 求和节点（44）将第一和第二传感器（40L，40H）的输出（OL，OH）相加。 模数转换器（54）提供表示总和信号的数字输出。 耦合到模拟数字转换器（54）的数字信号处理电路（70）向输入/输出电路（72）提供与第一和第二传感器（40L，40H）的输出（OL，OH）有关的输出， 通过过程控制回路（12）传输。

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

申请人： ROSEMOUNT INC.

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

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

CPC分类号： G01L9/12 ,  G01D5/24 ,  G01R27/2605

摘要： 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).