基于 FPGA 的多路视频图像高速同步采集系统

High Speed and Synchronous Multichannel Video Acquisition System Based on FPGA Technology

给出了一种能够高速同步采集多路黑白视频信号，采集的精度为８位，采样率为１４．７６８ＭＨｚ．此系统设计以现场可编程门阵ＦＰＧＡ为核心元件，将系统的采样控制逻辑与压缩存储逻辑集成在一块ＦＰＧＡ芯片上，与采用单片机或通用器件实现相比，具有速度快、可靠性高、结构简单、体积小等优点，而且设计周期短、灵活性大，我们已经将其应用在高速高精度的三维净空测量中．

An acquisition system that can synchronously capture multichannel videos with 8 bit sample accuracy and 14.768 MHz sample frequency is introduced. In the system the FPGA is the key component that implements sample control logic and compress and store logic, which makes design cycle shorter and reliability higher. Compared with the system using the microcontroller or the general devices, the present one has the advantages of higher speed , higher liability, simpler structure and smaller volume. This design has been already successfully used in high speed and high accuracy three dimensional measurement with multichannel CCD cameras.