Construction of a Ultrasonic Gas Flowmeter

Feng Wan, Renjie Liu

2018

Abstract

In this paper, a new method on how to design ultrasonic gas flow meter is presented. Ultrasonic sensor with large area and center frequency 120kHz is selected and ultrasonic sensor driving circuit based on IRF7389 is designed to drive the sensor, the received ultrasonic signal can reach 1000mv in the distance of 30cm, thus can make the amplifying circuit easy to design. In the ultrasonic receiving circuit, the no inverting amplifier is used to realize preliminary amplification; followed by the second-order band pass filter with the center frequency for 120kHz to filter out the noise, gain adjustable amplifier circuit is designed based on digital potentiometer, ultrasonic signal after comparison circuit outputs square wave to control chip time TDC-GP2 to achieve time interval measurements. Finally, the system is calibrated and the calibration results show that the measurement accuracy is 1%.

Paper Citation

in Harvard Style

Wan F. and Liu R. (2018). Construction of a Ultrasonic Gas Flowmeter.In Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials - Volume 1: ICIMM, ISBN 978-989-758-345-2, pages 568-572. DOI: 10.5220/0007535905680572

in Bibtex Style

@conference{icimm18,
author={Feng Wan and Renjie Liu},
title={Construction of a Ultrasonic Gas Flowmeter},
booktitle={Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials - Volume 1: ICIMM,},
year={2018},
pages={568-572},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007535905680572},
isbn={978-989-758-345-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials - Volume 1: ICIMM,
TI - Construction of a Ultrasonic Gas Flowmeter
SN - 978-989-758-345-2
AU - Wan F.
AU - Liu R.
PY - 2018
SP - 568
EP - 572
DO - 10.5220/0007535905680572