Applications of Pixel-by-Pixel Calibration Method in Microscale Measurements With Pressure-Sensitive Paint
Applications of Pixel-by-Pixel Calibration Method in Microscale Measurements With Pressure-Sensitive Paint
复制标题
逐像素校准方法在压敏涂料微尺度测量中的应用
DOI：
10.1109/jmems.2012.2203106
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发表时间：
2012
影响因子：
2.7
通讯作者：
Jia
中科院分区：
文献类型：
--
作者：
Chih;Chih;Jia
本文介绍了压敏涂料逐像素校准法(P-b-P)在微尺度测量中的应用，并与传统的单点(S-P)校准法进行了比较。PSP因其能获得详细的压力分布和全球地图的优势，已被应用于微尺度测量。然而，常规的S-P定标方法在宏观尺度测量中有其局限性，在光照不均匀的情况下，测量误差高达77%。在数据简化过程中，这种偏差可能会导致对流场中的物理现象的误解。利用光电探测器上的每个像素作为单独的压力传感器的P-b-P校准方法已经被检验，以检验其在微小尺度测量中校正由于光照不均匀、环境和通道几何形状的反射以及相邻传感器之间的自发光而引起的发光偏差的有效性。通过压力图，成功地揭示了聚二甲基硅氧烷微通道内纵向和横向的压力分布，从而将微通道宽度的有效测量范围从50%提高到80%。
This paper presents the applications of pixel-by-pixel (P-b-P) calibration method for pressure-sensitive paint (PSP) in microscale measurements and the comparison with conventional single-point (S-P) calibration method. PSP has been applied to microscale measurements for its advantages of acquiring detailed pressure profiles and global maps. However, conventional S-P calibration method, which is commonly applied in macroscale measurements, has its restrictions in microscale measurements, and errors up to 77% are observed under the situation of nonuniform illumination. The deviation can result in misinterpretation of physics in the flow fields during data reduction. The P-b-P calibration method which utilizes every pixel on the photodetector as an individual pressure sensor has been examined for its effectiveness for correcting the luminescence deviation in microscale measurements due to nonuniform illumination, reflection from environments and channel geometry, and self-illumination between neighboring sensors. It successfully reveals correct pressure profiles inside polydimethylsiloxane microchannel in both longitudinal and lateral directions through the pressure map, thereby increasing the effective measurement domain across the microchannel width from 50% to 80%.
影响因子：
2.8
作者：
Matsuda, Yu;Uchida, Toru;Niimi, Tomohide
通讯作者：
Niimi, Tomohide