High-accuracy ultrasonic temperature measurement based on MLS-modulated continuous wave

Zhou, Chao; Wang, Yueke; Qiao, Chunjie; Zhao, Shen; Huang, Zhigang

doi:10.1016/j.measurement.2016.03.037

Cited by 16 publications

(8 citation statements)

References 19 publications

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“…This type of temperature sensor is widely used as a mechanical switch for temperature control, usually, know as thermostats. [10] Few millimeters/minutes 0.1 °C Biomaterial [11,12] Few millimeters/seconds 0.1 °C Gas thermometers [13] Centimeters/minutes 0.001 K Acoustic [14][15][16][17][18] Centimeters/milliseconds 0.1 °C Electrical Thermocouple [19,20] 0.02-5 mm/50 ms-1 min 0.1 °C RTD [20,21] Few millimeters/minutes 0.001 °C Thermistor [13,21] 1-10 mm/20-300 s 0.01 °C (low span, 50 °C) Semiconductor junction [22] Few millimeters/minutes 0.5 °C Optical Optical fiber [23,24] millimeters 1D/millisecond 0.05-0.1 °C Thermoreflectance [25][26][27] 10 μm/down to ms 0.1-1.1 °C Liquid crystal [28][29][30][31] 2D/less than 1 s 0.5-0.9 °C Thermo-and photoluminescence [32][33][34][35] 2D observed temperature fields 1-31 °C Interferometry [36][37][38] 2D/milliseconds or less 2% (temperature in K) IR thermography [39][40][41] 40 μm-1 mm (2D)/down to ms 18 mK Temperature-sensitive paints (TSP) [41] 5 μm-1 mm (2D)/down to ms 0.4 °C 2.1.1.3 Gas thermometers Such mechanical thermometers are based on the variation in the pressure or volume when a fluid changes the temperature [13]. Basically, two types of fluid states are used, gas state or saturated state.…”

Section: Bimaterials Methodsmentioning

confidence: 99%

Heat transfer coefficient: a review of measurement techniques

Moreira

Colmanetti

Tibiriçá

2019

J Braz. Soc. Mech. Sci. Eng.

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Heat transfer coefficient is a basic parameter used in the calculation of convective heat transfer problems. Due to the importance of the experimental measurements for the development of convective heat transfer, this review identifies, classifies and describes the experimental methods used for the measurement of heat transfer coefficient. The methods were classified into five major groups: (1) direct method, (2) transient method, (3) Wilson method, (4) heat/momentum/mass transfer analogy method and (5) boundary layer thickness method. Their applications, limitations and the reported accuracy were evaluated in the context of new developments in temperature and heat flux measurement techniques. Finally, this review provides criteria for the selection of the most suitable technique for measurements of heat transfer coefficient according to the aspects of spatial resolution, geometric scale, intrusiveness, fluid type, response time and accuracy. Keywords Heat transfer coefficient • Temperature • Heat flux • Convection • Experimental measurements List of symbols 1D One-dimensional 2D Two-dimensional A Surface area (m 2) A e Outer tube surface area (m 2) A i Inner tube surface area (m 2) A s Surface area (m 2) C e Thermal resistances outside the tube and the tube wall (K/W) (constant) C i Constant C f Fanning friction factor (-), C f = s V 2 ∕2 c Constant (-) c p Specific heat capacity (J/kg K) c p,i Specific heat capacity at constant pressure (J/ kg K) d Diameter (m) d e Outer tube diameter (m) d i Inner tube diameter (m) D m Mass diffusivity (m 2 /s) f Darcy friction factor (-), f = 4 ⋅ C f * Cristiano Bigonha Tibiriçá

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Section: Bimaterials Methodsmentioning

confidence: 99%

Heat transfer coefficient: a review of measurement techniques

Moreira

Colmanetti

Tibiriçá

2019

J Braz. Soc. Mech. Sci. Eng.

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“…Using this technique an uncertainty of 40 µm was achieved in distilled water on distances up to 200 mm. This team implemented MLS-modulated measurement method on temperature measurement as well in 2016 [23]. Using the same setup as before, but with an extra mercury thermometer and thermostatic bath, measurement accuracy of ±0.04 °C was achieved.…”

Section: Papers Dealing With Precise Ultrasonic Measurementsmentioning

confidence: 99%

Ultrasonic thermometry study and portable ultrasonic thermometer prototype

Ondraczka

2017

2017 International Conference on Applied Electronics (AE)

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This paper presents an ultrasonic thermometry state of the art study and shows principle of the ultrasonic thermometry through experiments with an ultrasonic thermometer prototype. The study covers a brief ultrasonic temperature measurement research history and focuses on recent revelations in this field. The thermometer prototype is constructed to be portable and usable for educational presentations. Its principle, performance and ultrasonic temperature measurements results are described in the experimental part. Keywords-ultrasonic thermometry; air temperature measurement; time of flight; ultrasonic thermometer;I.

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“…[7], the authors proposed a promising method for ultrasonic temperature measurement. and the problem of system calibration was also mentioned.…”

Section: Problem Formulationmentioning

confidence: 99%

“…To achieve highly accurate TD estimation, a continuous wave modulated by maximum length sequence is adopted for echo suppression to increase the available length of the received signal, and a hybrid technique incorporating both cross-correlation and phase shift is employed. Cross-correlation initially, based on the transmitted and received signals, produces a rough TD to eliminate the phase ambiguity, and then phase shift refines this rough value to estimate TD with higher accuracy [7]. …”

Section: Calibration Of Ultrasonic Systemmentioning

confidence: 99%

“…Thus, if the ultrasound velocity is measured, the temperature can be determined. In our previous study [7], we proposed a promising method for highly accurate ultrasonic temperature measurement. Two transducers, mounted face to face, act as the transmitter and the receiver of the ultrasound signals, respectively, and the distance between them is fixed.…”

Section: Introductionmentioning

confidence: 99%

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Calibration Method of an Ultrasonic System for Temperature Measurement

et al. 2016

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System calibration is fundamental to the overall accuracy of the ultrasonic temperature measurement, and it is basically involved in accurately measuring the path length and the system latency of the ultrasonic system. This paper proposes a method of high accuracy system calibration. By estimating the time delay between the transmitted signal and the received signal at several different temperatures, the calibration equations are constructed, and the calibrated results are determined with the use of the least squares algorithm. The formulas are deduced for calculating the calibration uncertainties, and the possible influential factors are analyzed. The experimental results in distilled water show that the calibrated path length and system latency can achieve uncertainties of 0.058 mm and 0.038 μs, respectively, and the temperature accuracy is significantly improved by using the calibrated results. The temperature error remains within ±0.04°C consistently, and the percentage error is less than 0.15%.

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High-accuracy ultrasonic temperature measurement based on MLS-modulated continuous wave

Cited by 16 publications

References 19 publications

Heat transfer coefficient: a review of measurement techniques

Heat transfer coefficient: a review of measurement techniques

Ultrasonic thermometry study and portable ultrasonic thermometer prototype

Calibration Method of an Ultrasonic System for Temperature Measurement

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