A dual-CCD simulating human eyes and neck (DSHEN) vision system is putforward. Its structure and principle are introduced. The DSREN vision system can perform somemovements simulating human eyes and neck by means of f...A dual-CCD simulating human eyes and neck (DSHEN) vision system is putforward. Its structure and principle are introduced. The DSREN vision system can perform somemovements simulating human eyes and neck by means of four rotating joints, and realize preciseobject recognizing and distance measuring in all orientations. The mathematic model of the DSHENvision system is built, and its movement equation is solved. The coordinate error and measureprecision affected by the movement parameters are analyzed by means of intersection measuringmethod. So a theoretic foundation for further research on automatic object recognizing and precisetarget tracking is provided.展开更多
三线同步串口传输方式具有简单可靠、实现容易、占用线缆少等优点,为了适应线阵CCD双端输出的高速成像模式需求,本文引入了DDR(Double Data Rate,双数据速率)读写方式,对三线同步串口进行改造,探讨如何在较低时钟频率下达到较高的传输带...三线同步串口传输方式具有简单可靠、实现容易、占用线缆少等优点,为了适应线阵CCD双端输出的高速成像模式需求,本文引入了DDR(Double Data Rate,双数据速率)读写方式,对三线同步串口进行改造,探讨如何在较低时钟频率下达到较高的传输带宽,提出了基于DDR的四线同步串口设计,当同步帧使能信号有效时,同时传输两组具有固定时延的数据,在接收端设计合适的缓存协议,实现了图像高速串行传输。该设计的程序编码比较简单,不过多增加传输线缆的负担,易于软硬件实现和工程应用。展开更多
基金Aerospace Technology Support Foundation (No.HT2001-zjdx)Science and Technology Development Project of Hangzhou City(No.2001121C42)
文摘A dual-CCD simulating human eyes and neck (DSHEN) vision system is putforward. Its structure and principle are introduced. The DSREN vision system can perform somemovements simulating human eyes and neck by means of four rotating joints, and realize preciseobject recognizing and distance measuring in all orientations. The mathematic model of the DSHENvision system is built, and its movement equation is solved. The coordinate error and measureprecision affected by the movement parameters are analyzed by means of intersection measuringmethod. So a theoretic foundation for further research on automatic object recognizing and precisetarget tracking is provided.
文摘三线同步串口传输方式具有简单可靠、实现容易、占用线缆少等优点,为了适应线阵CCD双端输出的高速成像模式需求,本文引入了DDR(Double Data Rate,双数据速率)读写方式,对三线同步串口进行改造,探讨如何在较低时钟频率下达到较高的传输带宽,提出了基于DDR的四线同步串口设计,当同步帧使能信号有效时,同时传输两组具有固定时延的数据,在接收端设计合适的缓存协议,实现了图像高速串行传输。该设计的程序编码比较简单,不过多增加传输线缆的负担,易于软硬件实现和工程应用。