公开(公告)号：WO1995029533A1

公开(公告)日：1995-11-02

申请号：PCT/US1995004496

申请日：1995-04-07

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  LaROCCA, BRIAN ,  O'BRIEN, Gregory, T.

IPC: H03M01/08

CPC classification number: H03M1/0872 ,  H03M1/52

Abstract: A measuring probe (12) measures a parameter with a sensor (20). The sensor (20) provides a sensor output signal related to a measured value. An amplifier (28) section receives the sensor output signal and provides an amplifier output signal. An integrator (34) has an input and an integrator output related to an integration of the input. Switching circuitry (32) receives the amplifier output signal and a reference signal and has an output connected to the input of the integrator (34). Controller circuitry (26) coupled to the switching circuitry (32) connects the amplifier output to the integrator input during a sampling time, and the reference signal to the integrator input during a conversion time. The conversion time is related to the sensor output signal and is measured to obtain a digital representation of the sensor output.

Abstract translation: 测量探头（12）用传感器（20）测量参数。 传感器（20）提供与测量值相关的传感器输出信号。 放大器（28）部分接收传感器输出信号并提供放大器输出信号。 积分器（34）具有与输入的积分相关的输入和积分器输出。 开关电路（32）接收放大器输出信号和参考信号，并具有连接到积分器（34）的输入的输出。 耦合到开关电路（32）的控制器电路（26）在采样时间期间将放大器输出连接到积分器输入，并且在转换时间期间将参考信号连接到积分器输入。 转换时间与传感器输出信号相关，并进行测量以获得传感器输出的数字表示。

公开(公告)号：EP0756784A1

公开(公告)日：1997-02-05

申请号：EP95916956.0

申请日：1995-04-07

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： LaROCCA, BRIAN ,  O'BRIEN, Gregory, T.

IPC: H03M1

CPC classification number: H03M1/0872 ,  H03M1/52

Abstract: A measuring probe (12) measures a parameter with a sensor (20). The sensor (20) provides a sensor output signal related to a measured value. An amplifier (28) section receives the sensor output signal and provides an amplifier output signal. An integrator (34) has an input and an integrator output related to an integration of the input. Switching circuitry (32) receives the amplifier output signal and a reference signal and has an output connected to the input of the integrator (34). Controller circuitry (26) coupled to the switching circuitry (32) connects the amplifier output to the integrator input during a sampling time, and the reference signal to the integrator input during a conversion time. The conversion time is related to the sensor output signal and is measured to obtain a digital representation of the sensor output.