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《Journal of Tianjin Polytechnic University》 2013-01
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Research of laser liquid level detection system of mask projection stereolithography

YAN Da-hai,XU Guang-shen(School of Mechanical Engineering,Xi′an Polytechnic University,Xi′an 710048,China)  
In order to control accurately the resin liquid level of mask projection stereolithography system,the laser liquid level detection system is designed.According to the measuring principle of laser triangulation,the system chooses the red light semiconductor lasers as the light source and use Position Sensitive Detectors(PSD) to detect liquid level height with the changing signal of reflection flare′s position.The experimental result indicates that in the range of 6 mm,deviation is just 0.34%,which can accurately detect resin liquid surface.
【Fund】: 国家自然科学基金资助项目(50745017;50875194);; 陕西省教育厅产业化培育项目(2011JG17)
【CateGory Index】: TN247
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