田间稻飞虱图像远程实时采集系统的研制

研制了一种田间稻飞虱图像远程实时采集系统。该系统由图像采集装置、自动控制系统和远程传输系统组成。利用稻飞虱的趋光性,将其引诱至图像采集装置的白色幕布上,可编程逻辑控制器(PLC)为自动控制系统的核心,发出脉冲控制相机拍摄,同时控制交流伺服电机运行,驱动拍摄装置,实现对幕布的自动扫描拍摄稻飞虱图像。远程传输系统选用4G技术和基于TCP协议的客户端/服务器模式传输方法,将所拍摄昆虫图像自动传输至监测中心处。验证试验结果表明,该系统可直接获得768×576像素的田间稻飞虱图像。通过二维离散傅里叶变换验证,采集系统所采集到的稻飞虱图像与其他昆虫图像存在明显特征差异,说明该系统可满足稻飞虱图像采集要求。

A remote real-time acquisition system for rice plant hopper images in the fields

A remote real-time acquisition system for rice plant hopper images in the fields has been designed and developed. The whole system consists of the image acquisition device, the automatic control system and the remote transmission system. Under the condition of night, rice plant hoppers will be attracted to the white cotton curtain based on the phototaxis of wild insects. The image acquisition device scanned the curtain screen line by line and took photos of the plant hoppers on the screen under the control of the PLC. The remote transmission system is set up with 4G technology and the method of network transmission based on the model TCP client/server, which can transmit the images taken in the wild fields to local lab for subsequent analysis. According to the result of the experiment taken in the wild field environment, the images of the rice plant hoppers can be obtained directly with the pixel of 768×576. There are obvious differences between these pictures and the images of other insects through the verification of two-dimensional discrete Fourier transform, which means the system meets the requirements of image acquisition.