作物生长多传感信息检测系统设计与应用

Intelligent Detection System of Multi-sensor Information for Growing Crops

简述了作物生长多传感信息检测系统的硬件平台及实现。光箱系统采用卤素灯和D65型标准光源两组独立可调的均匀光照系统,结合温湿度控制装置,可以实现对多种作物生长环境的模拟。信息采集系统集成了包括光谱、多光谱图像、冠层温度、冠层光照及环境温湿度等多传感信息探测器,可以充分利用多种信息对作物生长信息进行监测。应用该系统就油菜氮素和水分的光谱、多光谱图像特征及光照对检测的影响进行了研究,结果表明:该系统能够克服环境因素的影响,能够利用多传感信息对作物营养进行较准确的定量分析,其中,油菜氮素光谱特征模型的相关系数达到0.92,均方根误差为0.53。

The hardware system of an intelligent detection for growing crop was developed based on multi-sensor information.The stable light source was obtained from the detection chamber,and the temperature,humidity and lighting levels could be set in the system that could be used to simulate some growing environment of crops.The information including the spectrum information,multi-spectral image,canopy temperature and canopy lighting level for crops and ambient temperature,humidity information was collected by multi-sensor information acquisition system by which the crop growth information could be monitored effectively.Then,the system was used to detect the spectral and the multi-spectral image characters for the rape nitrogen level and the water content.Meanwhile,the influence of the light intensity was investigated for the detection system.The results showed that the influence of the environment factor on the results can be eliminated.The exact and quantitative analysis about the rape nitrogen content and the water content can be carried out by means of the multi-sensor information technology.The linear relationships between nitrogen content and spectral reflectance value is 0.92,with the RMSE of 0.53.