Design, Fabrication, and Characterization of a Pt/Au Thin-Film Thermocouple Array

Ding, Jiong; Wang, Jiayin; Xu, Qiyue; Yang, Su; Ye, Shuliang

doi:10.1109/jsen.2020.2977095

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…The switching criteria of variance R value is expressed in (11), taking the variance threshold δ as the J (k) value while data is steady, where variance values R S and R F determine the effect of smoothing and fast tracking and should be determined experimentally,…”

Section: Adaptive Filteringmentioning

confidence: 99%

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Research on a dedicated thin-film thermocouple testing system for transient temperature measurement

Xie,

Cui,

Wang

et al. 2024

Meas. Sci. Technol.

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The thin-film thermocouple (TFTC) is featured on small heat capacity and rapid response speed for transient temperature measurements under narrow space and difficult installation. Consequently, we propose a novel transient temperature testing system specifically designed for TFTC. This system features signal conditioning circuits with extended bandwidth and superior transfer speeds, a cold junction compensation method that supports customizable indexing tables, and an adaptive data filtering approach that precisely balances the smoothing of steady-state data with rapid responsiveness to transient data. This approach effectively mitigating the measurement distortion of transient temperature signals and the nonlinear phenomenon in cold junction compensation for TFTC. Utilizing NiCr/NiSi TFTC, we evaluated the system's accuracy, demonstrating a precision range of -0.5 to 0.25 °C within 20 - 100 °C, and a response delay under 0.1 ms. Compared to traditional thermocouple measurement systems, our system exhibits a finer time-domain resolution. Lastly, we successfully applied this system to observe the response of TFTC under the thermal load of short-pulse laser shocks, measuring a time constant of only 1.16 ms for the TFTC. This novel transient temperature testing system provides a new approach for TFTC to achieve online dynamic measurement and online calibration, and provides technical support for TFTC measurement technology towards engineering applications.

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Section: Adaptive Filteringmentioning

confidence: 99%

“…The transient temperature data collected from the TFTC contains a wide frequency component, which requires a high sampling speed of subsequent DAQ equipment to ensure low-frequency domain distortion. Microcomputers with DAQ cards are commonly used during the fabrication and calibration of TFTC; however, they lack flexibility [11].…”

Section: Introductionmentioning

confidence: 99%

Research on a dedicated thin-film thermocouple testing system for transient temperature measurement

Xie,

Cui,

Wang

et al. 2024

Meas. Sci. Technol.

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show abstract

“…In the region of machining, the thin-film thermocouple sensors are adopted for measuring the transient temperature on the rake face of metal cutting tool [4] or the cut-to-work interface [5]. During the assessment of these thin-film thermocouple sensors, the PC-based data acquisition systems are used to collect the amplified thermocouple temperature difference potential in order to explore the static and dynamic characteristics of the fabricated thin-film thermocouples [6], but these collecting system utilized above are lacked of flexibility and portability. Practically, for conciseness and integration, integrated thermocouple-to-digital converters are adopted commonly in microcontroller based measurement and control systems [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Research of transient temperature measuring based on thin-film thermocouple and Wi-Fi wireless DAQ method

2023

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The thin-film thermocouple temperature sensor is a new type of temperature sensor which was emerged with the development of thin-film materials. It features on a small heat capacity and a rapid response speed for transient temperature measurement on the surface of objects. The existing temperature data acquisition systems for filamentary thermocouples do not yet meet the conditions for distortion-free measurement of transient temperature signals in terms of sampling frequency and transmission rate. In addition, it is less flexible in terms of data transmission methods, while the cold end of the thermocouple compensation method has not yet compensated for the non-linear phenomenon of thermocouples, which affects the final measurement accuracy. This paper devised a wireless temperature data acquisition system for K-type thin-film thermocouples using a Wi-Fi wireless network to transmit sampling data, then applied the devised system as a data acquisition method to investigate the measurement of transient temperatures in conjunction with thin-film thermocouple sensors. The results of performance test indicated that the devised system is capable of transient temperature measurement of K-type thin-film thermocouples in the range of 0–650°C with a maximum sampling rate of 100 kHz, a temperature resolution of 0.16 degrees Celsius, an accuracy of 0.2% after non-linear compensation and the ability to measure transient temperature signals with a maximum frequency component of 25 kHz. Taken advantage of the devised wireless data acquisition system to measure the impulse response of a thin-film thermocouple sensor specimen, the meausured response curve is consistent with the law of first-order system, and the time constant of the sensor was obtained as approximately 1.16 ms. A comparison between the existing data acquisition apparatuses of type K thermocouple was made. The limitations of the devised system are also discussed.

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High-temperature protection performance of Mg-doped Al2O3 protective layers on the thin film thermocouples

Sun,

Jiang,

Zhao

et al. 2024

Ceramics International

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Design, Fabrication, and Characterization of a Pt/Au Thin-Film Thermocouple Array

Cited by 6 publications

References 15 publications

Research on a dedicated thin-film thermocouple testing system for transient temperature measurement

Research on a dedicated thin-film thermocouple testing system for transient temperature measurement

Research of transient temperature measuring based on thin-film thermocouple and Wi-Fi wireless DAQ method

High-temperature protection performance of Mg-doped Al2O3 protective layers on the thin film thermocouples

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