基于FPGA的运动目标远程监视系统设计
2023,31(5):21-27
摘要：运动目标检测是智能安防系统的重要组成部分，为了满足安防系统远距离监视目标以及视频传输实时性等需求，设计了一种基于FPGA平台的运动目标远程监视系统；该系统以Xilinx公司的Artix7系列FPGA芯片为核心，通过OV5640摄像头实现视频图像的采集，将采集到的图像进行灰度化处理，并通过DDR3存储器缓存处理后的图像，采用帧间差分法运动目标检测技术实现对多个运动物体的检测与标记，将检测结果通过以太网的UDP协议传输到上位机实时显示；实验结果表明，在图像分辨率为640*480时，以太网UDP传输速度为133Mbit/s，视频图像帧率为26fps，大于人眼的可视帧率24fps，满足视频传输实时性的要求，同时该系统能够远距离、高效地检测与跟踪多个运动目标，相比于其他系统具有可远程实时检测、小型化、低功耗的特点，可进一步应用到智能安防系统中。
关键词：#$TABFPGA；以太网；帧间差分法；多运动目标检测；UDP协议
Design of Remote Monitoring System for Moving Target Based on FPGA
Abstract：Moving target detection is an important part of intelligent security system. In order to meet the needs of long-distance surveillance and real-time video transmission, a moving target remote monitoring system based on FPGA platform is designed. The system takes Xilinx 's Artix7 series FPGA chip as the core, realizes the video image acquisition through the OV5640 camera, grays the collected image, and buffers the processed image through the DDR3 memory. The frame difference method moving target detection technology is used to detect and mark multiple moving objects, and the detection results are transmitted to the host computer through the Ethernet UDP protocol for real-time display ; the experimental results show that when the image resolution is 640 * 480, the Ethernet UDP transmission speed is 133 Mbit / s, and the video image frame rate is 26 fps, which is larger than the human eye 's visual frame rate of 24 fps, meeting the real-time requirements of video transmission. At the same time, the system can detect and track multiple moving targets remotely and efficiently. Compared with other systems, it has the characteristics of remote real-time detection, miniaturization and low power consumption, and can be further applied to intelligent security systems.
Key words：FPGA ; ethernet ; inter-frame difference method; multi-moving target detection; UDP protocol
收稿日期：2022-09-23
基金项目：
