Design and development of wireless flow transmitter

机译：无线流量变送器的设计与开发

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This paper presents the development of a wireless flow transmitter using rotameter and operational amplifier based signal conditioning circuit. The rotameter is a linear gravity based flow measuring device. It consists of a display unit which directly displays the flow rate. For industrial applications a new circuitry is required to transmit the measured flow rate to the control unit at remote areas. A ferromagnetic wire attached to the float of rotameter acts as a core of an inductance pickup coil constitutes the flow sensor. The self-inductance of the coil changes according to the change in flow rate. An operational amplifier based circuit is used for the measurement of self-inductance. The voltage corresponding to the flow rate is finally converted into 4-20 mA current. A wireless readout is provided using a microcontroller unit and a Bluetooth module. The results show a linear relation between the variation of self-inductance of a pickup coil as well as transmitter output with respect to flow rate. The theoretical equations and the simulation results are added in this paper.

机译：本文介绍了一种使用转子流量计和基于运算放大器的信号调理电路的无线流量变送器的开发。转子流量计是基于线性重力的流量测量设备。它由直接显示流量的显示单元组成。对于工业应用，需要新的电路将测得的流量传输到偏远地区的控制单元。附在转子浮子上的铁磁线作为构成流量传感器的电感线圈的核心。线圈的自感根据流量的变化而变化。基于运算放大器的电路用于测量自感。最终，与流量相对应的电压转换为4-20 mA电流。使用微控制器单元和蓝牙模块提供无线读数。结果表明，拾波线圈的自感变化与变送器输出之间的流量呈线性关系。本文增加了理论方程和仿真结果。

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来源
《International Conference on Electrical, Electronics, and Optimization Techniques》|2016年|3106-3110|共5页
会议地点 Chennai(IN)
作者
J. Hemalatha; P. S. Nikhil; C Shaniya Shaji; Komanapalli Venkata; Lakshmi Narayana;
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作者单位

School of Electrical Engineering, VIT University, Vellore, India;

School of Electrical Engineering, VIT University, Vellore, India;

School of Electrical Engineering, VIT University, Vellore, India;

School of Electrical Engineering, VIT University, Vellore, India;

School of Electrical Engineering, VIT University, Vellore, India;

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会议组织
原文格式 PDF
正文语种 eng
中图分类
关键词
Inductance; Wires; Transducers; Radio transmitters; Wireless communication; Operational amplifiers;

机译：电感;电线;传感器;无线电发射器;无线通信;运算放大器;

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Design and development of wireless flow transmitter

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