| 利用散斑照相检测微小位移的实时方法 |
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| 引用本文： | 王勤,黄丽清,王永昌. 利用散斑照相检测微小位移的实时方法[J]. 光子学报, 2003, 32(8): 1010-1012 |
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| 作者姓名： | 王勤 黄丽清 王永昌 |
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| 作者单位： | 西安交通大学理学院光信息科学与技术系,西安,710049 |
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| 摘 要： | 以CCD作为散斑和杨氏条纹记录设备,以与分屏器相连的电寻址空间光调制器作为滤波器,以计算机作为图像合成、条纹分辨及数据运算处理中心,并同时控制和协调CCD及空间光调制器等设备,实现了利用散斑照相实时、自动测定微小位移的过程.实验结果表明,此种方法获得的测量结果误差较小,具有一定的使用价值.
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| 关 键 词： | 散斑照相 空间光调制器 自动测量 |
| 收稿时间： | 2002-08-08 |
| 修稿时间： | 2002-08-08 |
Real-time method of measuring little displacement by speckle photography |
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| Wang Qin,Huang Liqing,Wang Yongchang. Real-time method of measuring little displacement by speckle photography[J]. Acta Photonica Sinica, 2003, 32(8): 1010-1012 |
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| Authors: | Wang Qin Huang Liqing Wang Yongchang |
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| Affiliation: | Department of Optic Information Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China |
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| Abstract: | Three equipments are used mainly in this experiment, including CCD, SLM and PC. CCD is used to collect speckle and Yang’s fringes. SLM connected to video splitter is used as filter. PC is used as center of images composing, fringes recognition and data processing.Besides this, PC is also used to control and harmonize the equipments.Then a real-time and automatic method to measure little displacement by speckle photography is given. It shows that erro of experiment is small by this method and this method has some values in practice. |
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| Keywords: | Speckle photography SLM Auto-measure |
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