Simulation Method of Ultrasonic Signal Echo From Measured Liquid Level

Journal of System Simulation ›› 2015, Vol. 27 ›› Issue (12): 2873-2877.

Simulation Method of Ultrasonic Signal Echo From Measured Liquid Level

Li Peng^1,2,3, Shen Xiaolong^1,2,3, Qian Yin^1,2,3

1. College of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
2. Jiangsu Key Laboratory of Meteorological Observation and Information Procession, Nanjing 210044, China;
3. Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing 210044, China

Received:2014-12-17 Revised:2015-05-28 Online:2015-12-08 Published:2020-07-30

Abstract

Abstract: Based on the ultrasonic wave scattering theory, a simulation method for the ultrasonic signal echo from liquid level was proposed. According to the fluid boundary-layer theory, the liquid level was divided into a four-layer structure, including liquid phase, gas phase, and liquid and gas stagnant layer. Furthermore, every phase was divided into lots of small scatters, and their scattering intensity was set on the basis of the concentration of water molecule. Thus, the echo signal was the sum of reflecting signals from all scatters. Besides, the simulated signal was compared with the real one with the same system parameter settings. The uniformity of waveform time and frequency parameter, and estimated level can demonstrate the feasibility and effectiveness of the proposed method. And, the proposed simulation method can also be suited to other transmitting waveform.

Key words: ultrasound, liquid level measurement, linear frequency modulation, signal simulation

CLC Number:

TB551

Li Peng, Shen Xiaolong, Qian Yin. Simulation Method of Ultrasonic Signal Echo From Measured Liquid Level[J]. Journal of System Simulation, 2015, 27(12): 2873-2877.

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