农业工程学报Issue(9)：167-172,6.DOI:10.11975/j.issn.1002-6819.2015.09.026
基于3G和Wi-Fi的高分辨率视觉传感器传输控制方案
High resolution vision sensor transmission control scheme based on 3G and Wi-Fi
摘要
Abstract
Embedded intelligent vision sensor technology has become a research hotspot of wireless vision sensor network (WVSN) due to its low cost and high efficiency image capturing. In earlier research, a low cost and high resolution agricultural vision sensor (HRAVS) was developed based on the platform S3C6410 and OV3640 in South China Agricultural University. In this paper, a vision sensor remote transmission control schema (VSRTC) was developed to enable HRAVS to communicate with each other in various communication technologies (cable, 3G, 4G and Wi-Fi). The combination of HRAVS and VSRTC can be applied in many areas of the Internet of Things (IOT) in Agriculture.This paper introduced design of application architecture, transmission control protocol, and the node’s application software of the VSRTC-HRAVS. A WVSN test was conducted for 25 days with 10 camera nodes in experimental fields of South China Agricultural University. Node control stability, the image capturing and encoding performance, the overall average image capturing time and the average frame rate of video capturing under different resolutions were evaluated in a series tests. The results showed that the new camera nodes were able to effectively carry out 3 capture modes (command response/cycle response/video), and under the re-transmission mode, the instruction loss rate was below 1% of all nodes. Given image pixel of 1.3, 2.0 and 3.2 Mpixel, when running without networking, the shortest average overall image processing time of the node were 6.2, 8.2 and 11.1 s respectively, and the largest video frame rates were 58.7, 34.6 and 16.4 frames per second, respectively; When running networking, the shortest average overall image processing time of the node were 17.6, 26.9 and 49.6 s respectively, and the highest video frame rates were 20.2, 16.1 and 9.3 frames per second, respectively. This scheme supported high resolution image and video transmission which can be applied in the field of agriculture where real-time transmission is not highly demanded.关键词
无线传感器网络/视觉/传输控制协议/高分辨率农业视觉传感器/视觉传感器远程传输控制Key words
wireless sensor network/vision/transmission control protocol/high resolution agricultural vision sensor (HRAVS)/vision sensor remote transmission control schema (VSRTC)分类
农业科技引用本文复制引用
肖德琴,黄顺彬,殷建军,冯健昭..基于3G和Wi-Fi的高分辨率视觉传感器传输控制方案[J].农业工程学报,2015,(9):167-172,6.基金项目
Guangzhou Science and Technology Program (1563000115) （1563000115）
