基于面阵图像传感器的自动读值光电自准直仪  

Auto-read Photoelectric Autocollimator Based on Area Array Image Sensors

作　　者：瑚琦[1] 杨园园[1] 高鹏飞[1] 郑遂[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《仪表技术与传感器》2011年第9期20-22,32,共4页Instrument Technique and Sensor

基　　金：国家自然基金资助项目(60808012)

摘　　要：利用面阵图像传感器,提出自动瞄准读式光电自准直仪的设计方案,从工作原理、硬件以及软件三方面阐述该系统的设计方案和实现方法。通过面阵图像传感器(CCD或CMOS)实现精确的二维测量,选用Blackfin系列DSP嵌入式内核处理器BF549,实现对图像数据的采集、存储和计算,利用液晶显示屏实时显示处理结果。利用帧间差分法和背景差分法相结合的算法检测静态背景下的运动目标,确定当前运动点的位置,计算出角位移结果并实时显示。An auto-read photoelectric autocollimator based on area array imaging sensors was proposed. The working princi- ples, hardware and software of this design were interpreted. Precise two-dimentional measurement was realized by making use of ar- ea array imaging sensors. The embedded core Blackfin DSP BF549 acquires images, helps store them and process the image data. And the TFT screen displays the prossessed result at real-time. The combined method of image interframe difference and back- ground difference was used to detect the moving target in a static background. Then it calculates the angular displacement using the position information of the moving measuring cross shape mark.

关 键 词：面阵图像传感器 自动读值 光电自准直仪 

分 类 号：TP752[自动化与计算机技术—检测技术与自动化装置]