Response compensation of fine‐wire thermocouples and its application to multidimensional measurement of a fluctuating temperature field
Response compensation of fine‐wire thermocouples and its application to multidimensional measurement of a fluctuating temperature field
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细线热电偶响应及其在脉动温度场多维测量中的应用
DOI：
10.1002/htj.20355
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发表时间：
2011
影响因子：
1.7
通讯作者：
Kenji Kato
中科院分区：
文献类型：
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作者：
M. Tagawa;K. Kaifuku;T. Houra;Y. Yamagami;Kenji Kato
提出了一种新的传感器技术，可以很容易地可视化空气流的波动温度场的时空行为。制作了两种温度探头：一种是由24个双热电偶传感器组成的杆式探头，另一种是由64个双热电偶传感器组成的平面式探头，它们排列在二维网格上（8 × 8点）。在这些探头中使用的每个双热电偶传感器由两个直径分别为25和51 μ m的细线热电偶（K型）组成。采用自适应响应补偿方案，精确重建快速变化的气流温度。该平面型探头能够使人工扰动的热空气射流的波动温度场可视化，并且能够充分捕获从吹风机吹出的热空气射流的快速圆周运动的时空行为。提出了一种时间常数估计方法，用于估计瞬时时间常数，为多维温度测量的实时响应补偿技术提供基础。此外，通过使用杆式探头扫描温度场，可以在一维空间和时间中重建温度分布。这种准二维可视化可以成为流体温度场“扫描仪”的原型。© 2011 Wiley Periodicals，Inc. Heat Trans Asian Res;在线发表于Wiley Online Library（wileyonlinelibrary.com/journal/htj）。DOI 10.1002/htj.20355
A novel sensor technique is proposed to visualize readily the spatiotemporal behavior of a fluctuating temperature field of air flow. Two temperature probes were fabricated: a rod-type probe consisting of 24 two-thermocouple sensors set in line, and a plane-type probe with 64 two-thermocouple sensors arrayed on a two-dimensional grid (8 × 8 points). Each two-thermocouple sensor used in these probes was composed of two fine-wire thermocouples (type K) of unequal diameters of 25 and 51 μm, respectively. An adaptive response-compensation scheme was applied to accurately reconstruct rapidly-changing airflow temperatures. The plane-type probe enables visualization of fluctuating temperature fields of an artificially disturbed hot-air jet and of the adequate capture of spatiotemporal behavior of a rapid circular motion of a hot-air jet blown out from a hair dryer. A time-constant estimation scheme was proposed to estimate instantaneous time-constants which serve as a basis for a real-time response compensation technique for multidimensional temperature measurement. In addition, by scanning a temperature field with the rod-type probe, the temperature distribution can be reconstructed in one-dimensional space and time. This quasi two-dimensional visualization can become a prototype of a “scanner” for fluid temperature fields. © 2011 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.20355
细线温度传感器响应补偿技术的数值评估（日语）
DOI：
--
发表时间：
2007
期刊：
Transaction of Japan Society of Mechanical Engineers Vol.73 (B), No.728
影响因子：
--
作者：
K.Kato;M.Tagawa
通讯作者：
M.Tagawa