Study of ultrasonic thermometry based on ultrasonic time-of-flight measurement

Abstract

Ultrasonic thermometry is a kind of acoustic pyrometry and it has been evolving as a new temperature measurement technology for various environment. However, the accurate measurement of the ultrasonic time-of-flight is the key for ultrasonic thermometry. In this paper, we study the ultrasonic thermometry technique based on ultrasonic time-of-flight measurement with a pair of ultrasonic transducers for transmitting and receiving signal. The ultrasonic transducers are installed in a single path which ultrasonic travels. In order to validate the performance of ultrasonic thermometry, we make a contrast about the absolute error between the measured temperature value and the practical one. With and without heater source, the experimental results indicate ultrasonic thermometry has high precision of temperature measurement.

Ultrasonic thermometry study and portable ultrasonic thermometer prototype

“…This team studied ultrasonic thermometry in two papers so far. First one deals with one dimensional ultrasonic thermometry [35]. Time-of-flight measurement based on two signal envelopes comparison was used.…”

“…Averaging of the measured values is used in ultrasonic thermometry practice to filter out critical deviations and improve measurement precision. For example in [35], the average value from 50 measurements is used. The values after averaging from 10 measurements are shown in the Fig.…”

Monitoramento De Temperatura Interna Em Materiais Por Termometria Ultrassônica

“…Vários métodos específicos de termometria por ultrassom têm sido propostos 3 . Neste trabalho foi usado o método de detecção do tempo de trânsito (time-of-flight) 4 .…”

Two‐Dimensional Temperature Field Distribution Reconstruction Based on Least Square Method and Radial Basis Function Approximation

“…Though, noncontact measurements surmount the limitation of contact measurements in single-point temperature measurement, these techniques are only applied to the temperature measurement of material surface [8]. In addition, the measurement accuracy of infrared radiations may be deteriorated because of different emissivity and reflectivity of infrared radiations from other sources [9,10].…”