分辨率实时可调的无线图像传感器节点设计与试验
针对目前用于农业图像获取的图像传感器节点分辨率偏低、分辨率固定不可调的现状,设计并实现一种分辨率实时可调的无线图像传感器节点。节点的硬件平台由ARM处理器S3C6410和CMOS图像传感器OV5642组成,并集成了Wi Fi模块和4 G模块。设计了太阳能供电系统为节点供电。采用嵌入式Linux搭建节点的软件平台,设计了基于驱动层和应用层协作、多线程并发的分辨率实时调整算法,并在应用层实现了分辨率实时调整、图像采集、图像压缩和无线传输等功能。为了验证节点的性能,将节点部署在农田进行了长时间的测试试验。测试结果表明,节点具有7种不同的分辨率,最高可达500万像素,更重要的是它在工作过程中可接收远程...
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Published in | 农业工程学报 Vol. 33; no. 3; pp. 182 - 189 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
华南农业大学数学与信息学院,广州,510642%华南农业大学工程学院,广州,510642
2017
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Subjects | |
Online Access | Get full text |
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Summary: | 针对目前用于农业图像获取的图像传感器节点分辨率偏低、分辨率固定不可调的现状,设计并实现一种分辨率实时可调的无线图像传感器节点。节点的硬件平台由ARM处理器S3C6410和CMOS图像传感器OV5642组成,并集成了Wi Fi模块和4 G模块。设计了太阳能供电系统为节点供电。采用嵌入式Linux搭建节点的软件平台,设计了基于驱动层和应用层协作、多线程并发的分辨率实时调整算法,并在应用层实现了分辨率实时调整、图像采集、图像压缩和无线传输等功能。为了验证节点的性能,将节点部署在农田进行了长时间的测试试验。测试结果表明,节点具有7种不同的分辨率,最高可达500万像素,更重要的是它在工作过程中可接收远程用户的指令,实时调整分辨率,进而采集不同精度的农作物图像,并远程传输到服务器端。试验表明所设计的节点可满足用户获取不同精度农业图像的需求。 |
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Bibliography: | 11-2047/S machine vision; image recognition; sensors; adjustable resolution; image sensor node; CMOS image sensor;wireless transmission; packet loss ratio Yin Jianjun, Zhang Tiemin2, Pan Chunhua, Ye Yaowen, Xiao Kehui, Xiao Deqin (1. College of Mathematics and Informatics, South China Agricultural University, Guangzhou 510642, China; 2. College of Engineering, South China Agricultural University, Guangzhou 510642, China) In order to overcome the problems of low and non-adjustable resolution existing in wireless images sensor nodesapplied in agricultural images acquisition at present, a wireless image sensor node with real-time adjustable resolution wasdesigned and realized in this paper. The node was composed of an image acquisition module, a processor module, a wirelesscommunication module and a power module. The node needed to not only capture, compress, and transmit image data, but alsoperform multiple task schedules and network protocols, so a powerful ARM (advanced RISC machines) processor S3C6410was chosen |
ISSN: | 1002-6819 |
DOI: | 10.11975/j.issn.1002-6819.2017.03.025 |