| 用于梳状结构光学测速系统的周期优化方法 |
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| 引用本文： | 罗娜,欧攀,张春熹,周金男. 用于梳状结构光学测速系统的周期优化方法[J]. 激光技术, 2015, 39(1): 71-75. DOI: 10.7510/jgjs.issn.1001-3806.2015.01.014 |
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| 作者姓名： | 罗娜 欧攀 张春熹 周金男 |
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| 作者单位： | 1.北京航空航天大学 仪器科学与光电工程学院, 北京 100191 |
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| 基金项目： | 教育部新世纪优秀人才支持计划资助项目 |
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| 摘 要： | 为了提高梳状结构光学测速系统的测速精度,采用数学原理研究了梳状结构的间距大小对输出光强信号周期性的影响,通过优化输出光强信号的周期性来提高测速精度,并采用一种结合图像处理选择最佳间距的实验方法,进行了相关的理论分析,对两种不同路面进行了实验仿真验证,得到不同间距下不同的输出光强信号的周期性情况。结果表明,当栅状结构的间距大小与地面特征点大小一致时,得到的输出光强周期性最优,对于普通的柏油和水泥路面,对应到地面的最佳栅状结构间距大小为1.0mm ~1.5mm。
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| 关 键 词： | 测量与计量 周期优化 图像处理 梳状结构 差分输出 |
| 收稿时间： | 2013-12-12 |
Cycle optimizing method used in optical velocity measurement systems based on grid structure |
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| LUO Na , OU Pan , ZHANG Chunxi , ZHOU Jinnan. Cycle optimizing method used in optical velocity measurement systems based on grid structure[J]. Laser Technology, 2015, 39(1): 71-75. DOI: 10.7510/jgjs.issn.1001-3806.2015.01.014 |
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| Authors: | LUO Na OU Pan ZHANG Chunxi ZHOU Jinnan |
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| Abstract: | In order to improve the measurement precision of optical velocity measurement systems based on grid structure, effect of spacing size of the grid structure on the period of output light intensity signal was studied using mathematical principles. Combined with image processing, optimal spacing size was selected so that the period of the output light intensity signal was optimized and the measurement precision was improved. After relevant theoretical analysis, simulation experiments were carried out for two different kinds of roads. The periodic information of different spacing under different output light intensity was obtained. The results show that when the spacing size of the grid structure is consistent with the surface feature point size, the optimum output light intensity period is obtained. For ordinary asphalt and concrete pavement, the best spacing is 1.0mm~1.5mm corresponding to the ground. |
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| Keywords: | measurement and metrology cycle optimizing image processing grid structure differential output |
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