具环型聚光镜之高解析度微质点影像测速仪(黄祖虹; 沈志忠; 赵胜裕)

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【作者】黄祖虹; 沈志忠; 赵胜裕 【作者单位】国立台湾海洋大学机械与机电工程学系; 国立台湾海洋大学系统工程暨造船学系水利论文;nYK-C8C1`n(b4\.s|~

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【论文摘要】 影像质点测速系一种利用流场内质点数位影像以分析其在特定时间内之质点位移,进而分析流场速度分布之实验量测法.此法具非侵入性及全域式速度量测等特性.一般质点影像测速仪由雷射光源、具双重曝光功能之数位相机、电脑所组成.一般以脉冲雷射作为其光源,以满足高亮度需求.然而,脉冲雷射却有设备昂贵、体积庞大、保养不易、易造成使用人员伤害等缺失.本研究着眼于发光二极体高效率、高频率响应以及冷光等特性,利用高功率发光二极体配合控制、散热元件,取代脉冲雷射.更藉由心型环状聚光镜取得清楚质点影像。完成廉价、轻薄短小、操作简便且安全的新型微质点影像测速仪。本研究试以具圆柱档块结构之微流场作围观测对象,并成功观测得微流体之层流特性.水利论文9f_0Cpd_i+Y4F3J-^

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【英文论文摘要】 In this study,a high-resolution micro particle image velocimetry (μPIV) is demonstrated. This μPIV system has special features to lower its cost an to enhance the resolution.A high power light emitting diode (LED) is used as the light source.A cardioid annular condenser (CytoViva 150) is included in the microscope to achieve submicron resolution.The overall system is not only much cheaper but also safer than a μPIV system with double pulse laser.Even without filter,the annular condenser can produce high quality particle images with high signal to noise ratio.Experimental results demonstrate that this μPIV system has the potential to be widely used as a low-cost and high-resolution microfluidic flow visualization tool.水利论文s5z H/S^*w0Yw,|~

'n/X$^W3x&_s ZW+C+j0【论文关键词】 微质点影像测速仪; 微流道; 发光二极体; 环型聚光镜
B/XVL%{0【英文论文关键词】 micro PIV; micro channel; high power LED; CytoViva; MEMS水利论文Z\_$Y5F
【基金】国立台湾海洋大学奈微米机电实验室的设备支援(NTOU-AF94-04-04-23-01);; 国立台湾海洋大学水产生物科技顶尖研究中心计画(96529001E2)资助.

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TAG: 质点 聚光镜 黄祖虹 沈志忠 赵胜裕
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