基于ARM的线阵CCD测距系统设计

CCD(电荷耦合器件)是一种高性能的半导体光电器件,近年来在摄像、工业检测等科技领域里得到了广泛的应用。将CCD测量系统应用于几何量测量中,可以满足高精度测量、在线动态检测和非接触测量等工程实际要求。主要研究内容是采用双目视差原理来测距,重点在于线阵CCD数据采集及处理系统的软硬件设计。首先在详细分析了线阵CCD的工作原理的基础上采用CPLD(复杂可编程逻辑器件)设计了线阵CCD积分时间和主频同时可调的驱动时序脉冲电路;最后设计了ARM7TDMI微控制器LPC2214为中心的信号处理系统硬件电路。

Design Linear CCD Measurement System Based on ARM

CCD(Charge Coupled Devices)is a semiconductor photoelectric device with particular performance,which is applied widely in some fields such as camera and industry measurement and so on in recent years.The measurement system with CCD has an advantage on the geometrical measure such as high accuracy measurement,on-lined dynamic detection,non-contact measurement and so on.This subject mainly studies the data acquisition and processing system based on linear CCD and the measurement principle is binocular parallax.Firstly,the work principle of linear CCD are introduced and analyzed in detail and simultaneously tunable integration time and frequency's time-sequence driving pulse circuit of linear CCD is designed with CPLD(Complicated Programmable Logic Device).Finally a fully hardware circuit of the signal processing system based on LPC2214,which belong to ARM7TDMI microprocessor,is designed.