| 线阵CCD技术在测量植物生长量方面的应用 |
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| 引用本文： | 魏军利,宋良图.线阵CCD技术在测量植物生长量方面的应用[J].传感器与微系统,2006,25(12):73-75. |
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| 作者姓名： | 魏军利 宋良图 |
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| 作者单位： | 1. 中国科学院,合肥智能机械研究所,安徽,合肥,230031;中国科学技术大学,安徽,合肥,230026
2. 中国科学院,合肥智能机械研究所,安徽,合肥,230031 |
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| 摘 要： | 为了能够自动测量植物生长增量,采用了一种基于激光准直光源加线阵电荷耦合器件(CCD)的光路结构,提出了一种用数字电位器来控制二值化电路的方法。基本原理是将被测物体投影在线阵CCD上,通过分析和比较CCD视频输出信号,将CCD像元的空间序列转换成电压的时间序列。由此得到感光像元的个数,进而计算投影尺寸得到被测物体的高度。实验结果验证了该系统可靠且实用。
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| 关 键 词： | 电荷耦合器件 二值化 数字电位器 浮动阈值 |
| 文章编号： | 1000-9787（2006）12-0073-03 |
| 收稿时间： | 2006-05-22 |
| 修稿时间： | 2006年5月22日 |
Application in measuring plant growth increment with a linear CCD technology |
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| WEI Jun-li,SONG Liang-tu.Application in measuring plant growth increment with a linear CCD technology[J].Transducer and Microsystem Technology,2006,25(12):73-75. |
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| Authors: | WEI Jun-li SONG Liang-tu |
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| Affiliation: | 1. Hefei Institute of Intelligent Machines, Chinese Acdamy of Sciences, Hefei 230031, China; 2. University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | For automatic measuring the plant growth increment, a optical architectonics based on laser collimating light source and linear CCD is adopted. A method of controlling binarization circuit with digital potentiomenter is proposed . The main is projecting the object on linear CCD and transforming the spacial series of CCD pixels into the time series of corresponding voltages by analyzing and comparing the output signals of CCD video. The number of the sensitized CCD pixels is got, the height of the object is obtained by calculating the size of projection, The experimental results demonstrate the availability and practicability of this system. |
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| Keywords: | charge coupled divice(CCD) binarization digital potentiomenter fluctuated threshold value |
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