摘要
为了克服当前交互式电子白板系统技术复杂、定位精度低等缺点,提出一种基于线阵电荷耦合器件(CCD)的大视场二维平面定位系统,该系统由待定位物体、CCD摄像装置和信号处理电路组成.CCD获取待定位物体的信息送入信号处理电路处理,通过坐标变换快速校正CCD光学系统引起的畸变,得到待定位物体的位置.系统定位距离为1 360mm,二维定位平面大小为1 574mm×1 260mm,定位误差小于2mm,定位精度高于0.2%.搭建了相应的大视场二维平面定位系统.实验结果表明,该系统可实现大角度非接触式二维物体的精确动态定位.
In order to avoid the complicated technology and low position accuracy in current interactive electronic whiteboard,a wide field of view and two-dimensional position measurement system based on linear array charge-coupled device（CCD） camera is proposed for the interactive whiteboard.This system was composed of three parts： the object to be located,CCD camera device and signal processing circuit.The position information of object on 2-D plane was obtained by the CCD camera.By the method of coordinate transformation specially designed in signal processing circuit,the precise position of the object on 2-D plane can be acquired with the process of the signal comes from CCD camera.The location distance of the system was 1 360 mm,scale of the 2-D plane was 1 574 mm×1 260 mm and precision was less than 2mm.The experimental results show that the system can reach the precision requirement of two-dimensional dynamic measurement system.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2011年第8期1475-1479,共5页
Journal of Zhejiang University：Engineering Science
关键词
线阵CCD
定位
复杂可编程逻辑器件(CPLD)
坐标变换
linear array CCD
position measurement
complex programmable logic device（CPLD）
coordinate transformation
