基于LVDS技术的高速图像采集系统的设计

Design of High-speed Image Acquisition System Based on LVDS Technology

针对图像传感器采集数据量大、传输通道多、传输速度快等特点,将LVDS技术应用于图像采集系统,提出了一种基于LVDS技术的多通道高速图像采集系统。详细介绍了LVDS技术的基本工作原理、技术特点,并结合实际设计要求,重点阐述了多通道高速图像采集系统的总体结构和各部分的硬件构成及系统控制部分的软件设计流程。同时,对于不同的图像尺寸和SPI接口情况进行了FPGA内部模块的系统仿真,证明整个系统能够实现对数据量高达5.9 Gbit/s的1280×1024图像阵列的实时采集和数据传输功能。

This paper presented a high-speed image acquisition system based on LVDS technology, with the characteristics of mass data, multiple channels, high-speed of data acquisition. It expatiated the operation principle and technology characteristics of low voltage differential signaling （LVDS）, and emphasized the whole frame, hardware structure and software design of control part. It simulated FPGA internal modules according to image size and SPI port, and proved the system can acquire 1 280 × 1 024 pixel array and transmit 5.9 Gbits/s image data.