公开(公告)号：US09175993B2

公开(公告)日：2015-11-03

申请号：US14038117

申请日：2013-09-26

Applicant: Rosemount Inc.

Inventor： Kirk Allan Hunter ,  Jordan Dennis Lucht ,  Jared James Dreier ,  Bruce David Rovner ,  Tim Scott Lemke

IPC: G01F1/58 ,  G01F1/60 ,  H04B10/80

CPC classification number: G01F1/60 ,  G01F1/58 ,  G01F1/588 ,  G05B2219/15133 ,  G05B2219/25458 ,  H04B10/801 ,  H04B10/802

Abstract: An industrial process control field device includes a process variable transducer configured to sense or control a process variable. Field device circuitry is configured to couple to the process variable transducer and communicate information related to the process variable to another location. The field device circuitry includes an optical isolator having transmit circuitry on a first side of a galvanic isolation configured to transmit an optical signal which is pulsed on and off across the isolation. Receive circuitry is located on a second side of galvanic isolation and configured to receive the optical signal with an optical sensor. The optical sensor enters an “on” state when it receives a pulse and is otherwise in an “off” state. The receive circuitry provides a secondary side output based upon the received optical signal. The receive circuitry enters in a low power state when the optical sensor is in the “off” state.

Abstract translation: 工业过程控制现场设备包括被配置为感测或控制过程变量的过程变量变换器。 现场设备电路被配置为耦合到过程变量传感器并将与过程变量相关的信息传递到另一位置。 现场设备电路包括光隔离器，其具有在电隔离器的第一侧上的发射电路，其被配置为传输跨越隔离物脉冲通过和关闭的光信号。 接收电路位于电隔离的第二侧，并被配置为用光学传感器接收光信号。 当光学传感器接收到脉冲并处于“关闭”状态时，该光学传感器进入“接通”状态。 接收电路基于所接收的光信号提供次级侧输出。 当光学传感器处于“关闭”状态时，接收电路进入低功率状态。

公开(公告)号：US20150082907A1

公开(公告)日：2015-03-26

申请号：US14038117

申请日：2013-09-26

Applicant: Rosemount Inc.

Inventor： Kirk Allan Hunter ,  Jordan Dennis Lucht ,  Jared James Dreier ,  Bruce David Rovner ,  Tim Scott Lemke

IPC: G01F1/60

CPC classification number: G01F1/60 ,  G01F1/58 ,  G01F1/588 ,  G05B2219/15133 ,  G05B2219/25458 ,  H04B10/801 ,  H04B10/802

Abstract: An industrial process control field device includes a process variable transducer configured to sense or control a process variable. Field device circuitry is configured to couple to the process variable transducer and communicate information related to the process variable to another location. The field device circuitry includes an optical isolator having transmit circuitry on a first side of a galvanic isolation configured to transmit an optical signal which is pulsed on and off across the isolation. Receive circuitry is located on a second side of galvanic isolation and configured to receive the optical signal with an optical sensor. The optical sensor enters an “on” state when it receives a pulse and is otherwise in an “off” state. The receive circuitry provides a secondary side output based upon the received optical signal. The receive circuitry enters in a low power state when the optical sensor is in the “off” state.

Abstract translation: 工业过程控制现场设备包括被配置为感测或控制过程变量的过程变量变换器。 现场设备电路被配置为耦合到过程变量传感器并将与过程变量相关的信息传递到另一位置。 现场设备电路包括光隔离器，其具有在电隔离器的第一侧上的发射电路，其被配置为传输跨越隔离物脉冲通过和关闭的光信号。 接收电路位于电隔离的第二侧，并被配置为用光学传感器接收光信号。 当光学传感器接收到脉冲并处于“关闭”状态时，该光学传感器进入“接通”状态。 接收电路基于所接收的光信号提供次级侧输出。 当光学传感器处于“关闭”状态时，接收电路进入低功率状态。