使用多路复用器和电阻应变片进行远程测量的模拟接口

Metrologiia ta priladi Pub Date : 2018-12-28 DOI:10.33955/2307-2180(6)2018.9-12

D. Ornatskyi, L. Kuzmych, V. Kvasnikov

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引用次数: 0

摘要

模拟接口电路包括测量链、变送器，变送器的输入通过模拟多路分解器连接到直流电源，测量链的输出通过模拟多路复用器连接到测量放大器，并开发了一个同时采样的双通道模数转换器。测量链由三个电阻分压器组成，其中一个分压器由电阻应变计和调节电阻器组成，另外两个是示例电阻器。这项工作旨在通过引入一种新的结构方案来寻找提高测量精度和干扰模拟接口的可能性，以便使用电阻应变计进行远程测量，如图2所示。

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The Analogue Interface for Remote Measurements Using Multiplexer and Resistive Strain Gauges

An analogue interface circuit that contains a measuring chain, a transmitter, the input of which is connected to a DC source through an analog demultiplexer, and the outputs of the measuring chain through the analog multiplexer are connected to the measuring amplifier, and a two-channel analog-digital converter with simultaneous sampling is developed. The measuring chain is made in the form of three resistive current dividers, where one divider is formed by a resistive strain gauge and adjusting resistor, and two others — exemplary resistors. This work is aimed at finding possibilities for increasing the accuracy of measurements and interfering analog interfaces for remote measurements using resistive strain gauges by introducing a new structural scheme, which is shown on the Fig.2.

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来源期刊

Metrologiia ta priladi

自引率

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审稿时长

5 weeks