公开(公告)号：US20160043730A1

公开(公告)日：2016-02-11

申请号：US14652923

申请日：2013-11-25

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Antoine Simon ,  Francois Klein

IPC: H03M1/06 ,  H03M1/66

CPC classification number: H03M1/0612 ,  H03M1/66

Abstract: A converter circuit serves to transform a digital measuring signal representing the chronological sequence of a periodically changing physical and/or chemical measurand into an analogue measure value signal dependent on the digital measuring signal with a signal current, an amperage of which represents a measuring value for the measurand. For this purpose the converter circuit comprises a current interface with a control input, with a current signal output and a current output. In addition, the converter circuit comprises a micro-processor with a measuring signal input for the digital measuring signal, with a current signal input connected to the current signal output of the current interface, and with a control output connected to the control input of the current interface. The current interface is designed to let the signal current flow through the current output and simultaneously adjust both the amperage to a stationary amperage level corresponding to a control value currently applied to the control input, and to output a sequence of current values at the current signal output. Furthermore, the micro-processor is designed to generate a measuring value sequence on the basis of the digital measuring signal and use it as the basis from which to generate a control value sequence and issue it at the control output as well as to monitor and/or check the current interface using the control value sequence and the current value sequence.

Abstract translation: A转换器电路用于将表示周期性变化的物理和/或化学被测量的时间顺序的数字测量信号变换为取决于具有信号电流的数字测量信号的模拟测量值信号，其电流强度表示 被测量。 为此，转换器电路包括具有控制输入的电流接口，具有电流信号输出和电流输出。 此外，转换器电路包括具有用于数字测量信号的测量信号输入的微处理器，其中连接到当前接口的当前信号输出的电流信号输入，以及连接到控制输入的控制输出 当前界面。 当前接口被设计成使信号电流流过电流输出，并同时将电流强度调整到与当前施加到控制输入端的控制值对应的静止电流电平，并输出当前信号的电流值序列 输出。 此外，微处理器被设计为基于数字测量信号产生测量值序列，并将其用作生成控制值序列并在控制输出端发出控制值序列的基础，以及监视和/ 或使用控制值序列和当前值序列检查当前接口。

公开(公告)号：US10256830B2

公开(公告)日：2019-04-09

申请号：US14652923

申请日：2013-11-25

Applicant: Endress + Hauser Flowtec AG

Inventor： Antoine Simon ,  Francois Klein

IPC: H03M1/66 ,  H03M1/06

Abstract: A converter circuit includes a current interface with a control input, with a current signal output and a current output. The converter circuit includes a micro-processor with a measuring signal input for the digital measuring signal, with a current signal input connected to the current signal output of the current interface, and with a control output connected to the control input of the current interface. The current interface lets the signal current flow through the current output and simultaneously adjust both the amperage to a stationary amperage level corresponding to a control value currently applied to the control input, and to output a sequence of current values at the current signal output. The micro-processor is designed to generate a measuring value sequence on the basis of the digital measuring signal and use it as the basis from which to generate a control value sequence and issue it at the control output as well as to monitor and/or check the current interface using the control value sequence and the current value sequence.