电源和驱动时序可调整CMOS成像系统的实现  

Implementation of a CMOS Imaging System with Adjustable Power Supplies and Driving Timing

作　　者：赵志刚[1,2] 杜杨[2] 黄建衡[2] 郭金川[2] 牛憨笨[2] 

机构地区：[1]华中科技大学光电子科学与工程学院,武汉430074 [2]深圳大学光电子研究所光电子器件与系统教育部重点实验室,广东深圳518060

出　　处：《光电工程》2010年第6期119-125,共7页Opto-Electronic Engineering

基　　金：国家自然科学基金重点资助项目(605320900)

摘　　要：从电源和驱动时序两方面入手,对影响CMOS图像传感器LUPA-4000成像质量的各种因素进行了分析。在此基础上,设计并实现了一套基于FPGA和ARM的具有参数调整功能的成像系统。LUPA-4000工作中需要调节的7种电源,采用了可调电阻与相应电源芯片相结合的方法进行设计。调整LUPA-4000驱动时序所需的多个参数首先在PC机中进行设置,然后通过基于ARM的以太网传输至FPGA。实测显示,该成像系统操作灵活、可扩展性强,能够对LUPA-4000驱动时序中多种参数进行精确的调整。本文对在实现该成像系统中需要解决的三个主要问题:硬件电路中可调电源的设计、参数的设置与传输方法以及LUPA-4000驱动时序的FPGA实现,都进行了详细的描述。Factors which affect the imaging quality of CMOS image sensor LUPA-4000 were investigated by analyzing the power supplies and the driving timing. Considering these factors, a CMOS imaging system with adjustable power supplies and driving timing was designed and implemented based on FPGA and ARM. Seven power supplies needed to be adjusted during LUPA-4000＇s working were designed by means of the combination of adjustable resistances and corresponding power chips. Parameters used in the adjustment of LUPA-4000＇s driving timing were set in PC firstly, and then transported to FPGA through Ethernet based on ARM. Actual tests showed that the imaging system can be operated and expanded flexibly, and can adjust all kinds of parameters in LUPA-4000＇s driving timing precisely. Three main topics are discussed in this imaging system, including design of adjustable power supplies, methods of parameters＇ setting and transmitting, and FPGA implement of LUPA-4000＇s driving timing

关 键 词：成像系统 CMOS图像传感器 FPGA ARM 以太网 驱动时序 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]