公开(公告)号：US09112354B2

公开(公告)日：2015-08-18

申请号：US13768821

申请日：2013-02-15

Applicant: Rosemount Inc.

Inventor： Douglas Wayne Arntson

IPC: H02J4/00 ,  H05B33/08 ,  H05B37/02 ,  G05B19/042

CPC classification number: H02J4/00 ,  G05B19/0423 ,  H05B33/0815 ,  H05B37/0254 ,  Y10T307/406 ,  Y10T307/414

Abstract: A process instrument includes a transducer, a two wire interface, a microprocessor, a digital to analog converter, a first control circuit, and a second control circuit. A current passing through the two wire interface indicates a condition of the transducer. The microprocessor is interfaced with the transducer. The digital to analog converter receives a signal from the microprocessor indicating a current value. The first control circuit is coupled to the digital to analog converter and adapted to control the current passing through the two wire interface to the current value. The second control circuit is coupled to the digital to analog converter and supplies current to a secondary load.

Abstract translation: 处理仪器包括换能器，双线接口，微处理器，数模转换器，第一控制电路和第二控制电路。 通过两线接口的电流表示换能器的状态。 微处理器与传感器接口。 数模转换器从微处理器接收指示当前值的信号。 第一控制电路耦合到数模转换器，并且适于将通过两线接口的电流控制到当前值。 第二控制电路耦合到数模转换器并且将电流提供给次级负载。

公开(公告)号：US20130162040A1

公开(公告)日：2013-06-27

申请号：US13768821

申请日：2013-02-15

Applicant: ROSEMOUNT INC.

Inventor： Douglas Wayne Arntson

IPC: H02J4/00

CPC classification number: H02J4/00 ,  G05B19/0423 ,  H05B33/0815 ,  H05B37/0254 ,  Y10T307/406 ,  Y10T307/414

Abstract: A process instrument includes a transducer, a two wire interface, a microprocessor, a digital to analog converter, a first control circuit, and a second control circuit. A current passing through the two wire interface indicates a condition of the transducer. The microprocessor is interfaced with the transducer. The digital to analog converter receives a signal from the microprocessor indicating a current value. The first control circuit is coupled to the digital to analog converter and adapted to control the current passing through the two wire interface to the current value. The second control circuit is coupled to the digital to analog converter and supplies current to a secondary load.

Abstract translation: 处理仪器包括换能器，双线接口，微处理器，数模转换器，第一控制电路和第二控制电路。 通过两线接口的电流表示换能器的状态。 微处理器与传感器接口。 数模转换器从微处理器接收指示当前值的信号。 第一控制电路耦合到数模转换器，并且适于将通过两线接口的电流控制到当前值。 第二控制电路耦合到数模转换器并且将电流提供给次级负载。