A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy
The proposed method for measuring the liquid level focuses on the ultrasonic impedance and echo energy inside a metal wall, to which the sensor is attached directly, not on ultrasonic waves that penetrate the gas–liquid medium of a container. Firstly, by analyzing the sound field distribution charac...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2017-01-01
|
Series: | Sensors |
Subjects: | |
Online Access: | http://www.mdpi.com/1424-8220/17/1/185 |
_version_ | 1811307275271274496 |
---|---|
author | Bin Zhang Yue-Juan Wei Wen-Yi Liu Yan-Jun Zhang Zong Yao Li-Hui Zhao Ji-Jun Xiong |
author_facet | Bin Zhang Yue-Juan Wei Wen-Yi Liu Yan-Jun Zhang Zong Yao Li-Hui Zhao Ji-Jun Xiong |
author_sort | Bin Zhang |
collection | DOAJ |
description | The proposed method for measuring the liquid level focuses on the ultrasonic impedance and echo energy inside a metal wall, to which the sensor is attached directly, not on ultrasonic waves that penetrate the gas–liquid medium of a container. Firstly, by analyzing the sound field distribution characteristics of the sensor in a metal wall, this paper proposes the concept of an "energy circle" and discusses how to calculate echo energy under three different states in detail. Meanwhile, an ultrasonic transmitting and receiving circuit is designed to convert the echo energy inside the energy circle into its equivalent electric power. Secondly, in order to find the two critical states of the energy circle in the process of liquid level detection, a program is designed to help with calculating two critical positions automatically. Finally, the proposed method is evaluated through a series of experiments, and the experimental results indicate that the proposed method is effective and accurate in calibration of the liquid level outside a sealed metal container. |
first_indexed | 2024-04-13T09:01:36Z |
format | Article |
id | doaj.art-f2b2d98600c449e980359930797641b1 |
institution | Directory Open Access Journal |
issn | 1424-8220 |
language | English |
last_indexed | 2024-04-13T09:01:36Z |
publishDate | 2017-01-01 |
publisher | MDPI AG |
record_format | Article |
series | Sensors |
spelling | doaj.art-f2b2d98600c449e980359930797641b12022-12-22T02:53:08ZengMDPI AGSensors1424-82202017-01-0117118510.3390/s17010185s17010185A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo EnergyBin Zhang0Yue-Juan Wei1Wen-Yi Liu2Yan-Jun Zhang3Zong Yao4Li-Hui Zhao5Ji-Jun Xiong6Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, ChinaSoftware School of North University of China, Taiyuan 030051, ChinaKey Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, ChinaKey Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, ChinaKey Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, ChinaKey Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, ChinaKey Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, ChinaThe proposed method for measuring the liquid level focuses on the ultrasonic impedance and echo energy inside a metal wall, to which the sensor is attached directly, not on ultrasonic waves that penetrate the gas–liquid medium of a container. Firstly, by analyzing the sound field distribution characteristics of the sensor in a metal wall, this paper proposes the concept of an "energy circle" and discusses how to calculate echo energy under three different states in detail. Meanwhile, an ultrasonic transmitting and receiving circuit is designed to convert the echo energy inside the energy circle into its equivalent electric power. Secondly, in order to find the two critical states of the energy circle in the process of liquid level detection, a program is designed to help with calculating two critical positions automatically. Finally, the proposed method is evaluated through a series of experiments, and the experimental results indicate that the proposed method is effective and accurate in calibration of the liquid level outside a sealed metal container.http://www.mdpi.com/1424-8220/17/1/185ultrasonic sensorultrasonic impedanceecho energysealed metal containerliquid level measurement |
spellingShingle | Bin Zhang Yue-Juan Wei Wen-Yi Liu Yan-Jun Zhang Zong Yao Li-Hui Zhao Ji-Jun Xiong A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy Sensors ultrasonic sensor ultrasonic impedance echo energy sealed metal container liquid level measurement |
title | A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy |
title_full | A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy |
title_fullStr | A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy |
title_full_unstemmed | A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy |
title_short | A Liquid Level Measurement Technique Outside a Sealed Metal Container Based on Ultrasonic Impedance and Echo Energy |
title_sort | liquid level measurement technique outside a sealed metal container based on ultrasonic impedance and echo energy |
topic | ultrasonic sensor ultrasonic impedance echo energy sealed metal container liquid level measurement |
url | http://www.mdpi.com/1424-8220/17/1/185 |
work_keys_str_mv | AT binzhang aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT yuejuanwei aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT wenyiliu aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT yanjunzhang aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT zongyao aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT lihuizhao aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT jijunxiong aliquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT binzhang liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT yuejuanwei liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT wenyiliu liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT yanjunzhang liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT zongyao liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT lihuizhao liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy AT jijunxiong liquidlevelmeasurementtechniqueoutsideasealedmetalcontainerbasedonultrasonicimpedanceandechoenergy |