Abstract: Concerning the drawbacks of traditional PCI frame grabber, using Altera's DE2 development platform, image acquisition and VGA display system of programmable logic chip based on Field-Programmable Gate Array (FPGA) were designed. This system used the programmable logic chip FPGA which was in-built into soft-core NiosⅡ as the controller. The FPGA has image sensor, digital memory, video D/A converter and VGA display interface as its accessories. System used System On a Programmable Chip (SOPC) technology to obtain control and coding over FPGA and its accessories and eventually to acquire, process and display the real-time images. The design results prove that, the electronic system based on SOPC technique is flexible and efficient in terms of designing, ported strong, easy to achieve high-speed data acquisition, and it has high compatibility.

Key words: System On a Programmable Chip (SOPC) technique, Field-Programmable Gate Array (FPGA), DE2, NiosⅡ, CMOS image sensor, video D/A converter, VGA display interface

摘要： 针对传统的PCI图像采集卡的弊端,利用Altera公司的DE2开发平台,设计了基于现场可编程门阵列(FPGA)的图像采集与VGA显示系统。该系统以嵌入了NiosⅡ软核的可编程逻辑芯片FPGA作为控制器,以图像传感器、数字存储器、视频D/A转换器、VGA显示接口等作为FPGA外设,利用可编程片上系统(SOPC)技术实现对FPGA及其外设的编程与控制,最终实现对实时图像的采集、处理与显示。设计结果表明,利用SOPC技术实现的电子系统具有设计方法灵活高效、可移植性强、易于实现高速数据采集、通用性好等优势。

关键词: 可编程片上系统技术, 现场可编程门阵列, DE2, NiosⅡ, CMOS图像传感器, 视频D/A转换器, VGA显示接口