基于FPGA和USB的面阵CCD图像采集系统设计
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摘要
设计一种以Sony面阵CCD器件ICX618为传感器的实时图像采集系统。该系统采用FPGA作为控制核心,由AD9945芯片对CCD的输出信号进行相关双采样处理和A/D转换,经USB接口完成数据的高速传输,最后由上位机对数据进行处理和显示。实验表明,设计的CCD图像采集系统在40 f/s的帧频下工作稳定,系统性能好、成本低、可靠性高,具有较好的实用价值,能够为其他型号CCD的应用提供参考。
A real-time image acquisition system with the area array CCD ICX618 made by Sony as the sensor is designed.In the system with FPGA as the control core,the AD9945 chip is used to perform the related double sampling processing and A/D conversion for output signals of the CCD. The USB interface is used to complete high-speed data transmission,and data is processed and displayed on the upper computer. The experimental results show that the designed CCD image acquisition system can work stably at the frame frequency of 40 f/s,has good performance,low cost,high reliability,and good practical value,and can provide a reference for the application of other types of CCDs.
A real-time image acquisition system with the area array CCD ICX618 made by Sony as the sensor is designed.In the system with FPGA as the control core,the AD9945 chip is used to perform the related double sampling processing and A/D conversion for output signals of the CCD. The USB interface is used to complete high-speed data transmission,and data is processed and displayed on the upper computer. The experimental results show that the designed CCD image acquisition system can work stably at the frame frequency of 40 f/s,has good performance,low cost,high reliability,and good practical value,and can provide a reference for the application of other types of CCDs.
引文
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[2]SARRAZIN P,BLAKE D,FELDMAN S,et al.Field deployment of a portable XRD/XRF instrument on Mars analog terrain[J].Advances in x-ray analysis,2005,48:194-203.
[3]沈扬.新型X射线探测设备的探索性研究[D].上海:复旦大学,2011:15-16.SHEN Yang.An exploratory study of the new X-ray detection device[D].Shanghai:Fudan University,2011:15-16.
[4]Sony Corporation.ICX618AKA:diagonal 4.5 mm(type 1/4)progressive scan CCD image sensor with square pixel for color cameras[EB/OL].[2011-09-10].https://wenku.baidu.com/view/d397b40fba1aa8114431d943.html.
[5]李亚鹏,何斌,付天骄.行间转移型面阵CCD成像系统设计[J].红外与激光工程,2014,43(8):2602-2606.LI Yapeng,HE Bin,FU Tianjiao.Design of imaging system of interline area CCD[J].Infrared and laser engineering,2014,43(8):2602-2606.
[6]Analog Devices,Inc.AD9945:complete 12-bit 40 MHz CCD signal processor[EB/OL].[2003-01-08].https://wenku.baidu.com/view/a8147f452b160b4e767fcf51.html.
[7]邵冬冬.基于FPGA的彩色CCD的荧光图像采集和驱动模组设计[D].杭州:浙江大学,2015:16-17.SHAO Dongdong.The fluorescence image acquisition and driving module design of color CCD based on FPGA technology[D].Hangzhou:Zhejiang University,2015:16-17.
[8]赵林,孟令军,于磊,等.基于CY7C68013A的USB 2.0高速接口设计[J].电子技术应用,2014,40(1):131-133.ZHAO Lin,MENG Lingjun,YU Lei,et al.USB 2.0 highspeed interface design based on CY7C68013A[J].Application of electronic technique,2014,40(1):131-133.
[9]郑杰.USB 3.0编程宝典[M].北京:电子工业出版社,2013:226-227.ZHENG Jie.USB 3.0 programming treasure[M].Beijing:Publishing House of Electronics Industry,2013:226-227.
[10]Cypress Semiconductor Corporation.CY7C68013A:EZ-USB?FX2LPTMUSB microcontroller,high-speed USB peripheral controller[EB/OL].(2012-02-07)[2013-05-23].https://www.element14.com/community/docs/DOC-54523/l/cypress-datasheet-for-cy7c68013a-ez-usb-fx2lp-usb-microcontroller-highspeed-usb-peripheral-controller.