Accuracy Estimation of Propagation Velocity in Variable Path Ultrasonic Interferometer for Liquids

Sharma, Satish J.; Mishra, Ujjwal Kumar; Saini, Arvind Kumar; Dubey, P. K.

doi:10.1007/s12647-019-00331-x

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…Liquids with higher density have a lower damping coefficient, which affects the magnitude of the measured signal, as described in [6]. The temperature and pressure of the liquid have a significant effect on the accuracy of the ultrasonic measurement [21,22], and they are the parameters we investigated and whose interdependence we analyzed. The aim of the proposed analysis is to standardize the received envelope of the ultrasound signal so that the measurement is as independent as possible of the temperature and pressure of the liquid, as experimentally verified in the works of [21,26].…”

Section: Factors Influencing Ultrasonic Signalsmentioning

confidence: 99%

“…This study focuses specifically on improving the accuracy of oil level measurement with an ultrasonic level sensor that gives measurement range and temperature range, where the design and materials used in the sensor can affect the signal generated and analyzed [19,20]. A major challenge in using ultrasonic signal measurement for oil level measurement is the significant dependence of the ultrasonic signal response on temperature and viscosity [19,[21][22][23]) describing physical phenomena and possible elimination-type methods.…”

Section: Introductionmentioning

confidence: 99%

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Identification of the Physical Dependencies of Accurate Oil Level Measurement for Automotive Applications

et al. 2023

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The presented research addresses the problem of dependency analysis of the ultrasonic signal measured by a sensor in an engine oil bath. The dependency analysis is performed on a selected ultrasonic signal sensor solution containing its own generator and an ultrasonic signal receiver detecting the level of the oil in which it is immersed. The influence of the resulting amplitude of the received ultrasonic signal is mainly due to the level of the measured oil level and the oil temperature, as shown by the regression analysis and ANOVA (Analysis of Variance) testing performed. The analyzed dependence of the time determination of the length of the generated ultrasonic signal envelope is given by a set threshold value, which can be dynamically adjusted based on the backtracking evaluation. The analysis results in the form of approximation by the dependency algorithm confirm the assumption of possible standardization of the envelope parameters with the achievement of accuracy up to 99.02%. The analyzed parameters approximated by the temperature and oil level dependence algorithms include the amplitude of the measured signal, steepness of the rising edge, duration of the envelope, and the digitally processed amplitude value.

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Section: Factors Influencing Ultrasonic Signalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of the Physical Dependencies of Accurate Oil Level Measurement for Automotive Applications

et al. 2023

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Development of Remote Wireless Environmental Conditions Measurement, Monitoring and Recording Device for Metrological and Other Scientific Applications

Kumar

Dubey

Zafer

et al. 2020

MAPAN

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Development of sweep frequency ultrasonic interferometer for high precision velocity measurement in liquids

Dhiman,

Sharma,

Piyush

et al. 2023

Review of Scientific Instruments

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An ultrasonic interferometer with variable separation between the transducer and reflector is widely used for the measurement of ultrasonic propagation velocity in liquids. The inherent limitation of such an interferometer is due to the mechanical movement of its reflector for ultrasonic wavelength measurement in a liquid medium. It is observed that the ultrasonic velocity measurement precision is adversely affected at higher frequencies compared to lower ones. For instance, in our experimentation, a standard deviation of ±21.5 m/s (±1.43%) was obtained for velocity measurement at 1.84 MHz with the consideration of two consecutive maxima, which increases drastically to ±76.8 m/s (±5.12%) at 9.4 MHz. These measurements can significantly be improved by considering many maxima and averaging for wavelength estimation. However, it still requires design attention and improvement, particularly for higher frequencies. In this article, a sweep-frequency based ultrasonic interferometer design with a fixed separation for liquid characterization is proposed and described. This technique overcomes the limitations of mechanical movement systems and also provides a better and uniform precision for lower as well as higher frequencies. The functionality of the developed sweep frequency method was tested in water, carbon tetrachloride, ethylene glycol, and glycerol, which shows good agreement with literature values. The velocity measurement in double distilled water by the developed technique at 1 Hz sweep resolution has shown an improved standard deviation of ±0.74 m/s (±0.05%) at 9.4 MHz.

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Accuracy Estimation of Propagation Velocity in Variable Path Ultrasonic Interferometer for Liquids

Cited by 5 publications

References 24 publications

Identification of the Physical Dependencies of Accurate Oil Level Measurement for Automotive Applications

Identification of the Physical Dependencies of Accurate Oil Level Measurement for Automotive Applications

Development of Remote Wireless Environmental Conditions Measurement, Monitoring and Recording Device for Metrological and Other Scientific Applications

Development of sweep frequency ultrasonic interferometer for high precision velocity measurement in liquids

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