WEI Jun-li~. Application in measuring plant growth increment with a linear CCD technology[J]. 2006, (12): 73-75. DOI: 10.13873/j.1000-97872006.12.025.
线阵CCD技术在测量植物生长量方面的应用
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。
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.