摘要
为验证逐日平台追踪太阳的准确性及其消除太阳高度对作物生长信息传感器影响的效果,从而解决被动光源作物生长信息监测仪器因太阳高度角变化导致反射率测量误差波动大、有效采样窗口期短等问题,在课题组前期被动光源作物生长信息传感器和逐日平台研制的基础上,通过逐日准确性试验、标准反射率以及作物冠层反射率检测对比试验,对逐日平台搭载作物生长信息传感器的实际效果进行了检验与评估。结果显示,逐日平台水平方向追踪太阳的平均偏离角度为0.592°,竖直方向追踪太阳的平均偏离角度为0.470°;当作物生长信息传感器直接测量10%、20%、40%、60%标准反射率灰度板和作物冠层反射率时,在8:00-17:00时间段内因受太阳高度角影响,传感器测量的反射率波动幅度达60.00%以上,仅中午前后(11:00-13:00)测量的反射率较为准确;当使用逐日平台搭载作物生长信息传感器测量相同对象时,8:00-17:00时间段内测得反射率均较为准确,反射率波动幅度在2.53%以内。试验结果表明,使用逐日平台能显著提升被动光源作物生长信息传感器测量的准确性,延长作物生长信息传感器日工作时间1倍以上。
The solar tracking platform had been developed by our team to solve the problems that the fluctuation of reflectance measurement error was large and the sampling window period was short for the passive light source crop growth information sensors, due to the change of solar elevation. To verify the sun tracking accuracy of the solar tracking platform and its effect on eliminating the influence of solar elevation on crop growth information sensors, the performance of the platform was evaluated through the sun tracking accuracy test, standard reflectance detection comparison, and crop reflectance measurement verification, based on the passive light source crop growth information sensor our group had already developed. The results indicated that the average deviation angle for tracking the sun in the horizontal direction of the platform was 0.592°, and the average deviation angle of the sun tracking in the vertical direction was 0.470°. Affected by the solar elevation, amplitude of the reflectance measured directly by crop growth information sensors from 10%, 20%, 40% and 60% reflectance standards and crop canopy during 8:00-17:00, was more than 60.00%, and only the reflectance measured around noon(11:00-13:00) was more accurate. However, the reflectance from 8:00 to 17:00 was more accurate, and the reflectance fluctuation was within 2.53%, when the same object was measured using the crop growth information sensor carried by the platform. These results suggest that the use of the solar tracking platform can enhance the sampling accuracy of the passive light source crop growth information sensors, and prolong the daily working time of the sensor by more than one time.
作者
唐普传
张美娜
孙传亮
吴茜
曹静
梁万杰
张伟欣
葛道阔
曹宏鑫
刘乃森
张文宇
王潇
李百明
吴金恺
吉书雯
朱星月
TANG Pu-chuan;ZHANG Mei-na;SUN Chuan-liang;WU Qian;CAO Jing;LIANG Wan-jie;ZHANG Wei-xin;GE Dao-kuo;CAO Hong-xin;LIU Nai-sen;ZHANG Wen-yu;WANG Xiao;LI Bai-ming;WU Jin-kai;JI Shu-wen;ZHU Xing-yue(School of Agricultural Engineering,Jiangsu University,Zhenjiang 212013,China;Institute of Agricultural Information/YuanQi-IAI Joint Laboratory for Agricultural Digital Twin/IGRB-IAI Joint Laboratory of Germplasm Resources Innovation&Information Utilization,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;Huaiyin Normal University/Jiangsu Collaborative Innovation Center of Regional Modern Agriculture&Environmental Protection/Jiangsu Key Laboratory of Eco-Agricultural Biotechnology Around Hongze Lake/Jiangsu Engineering Research Center for Cyanophytes Forecast and Ecological Restoration of Hongze Lake,Huai’an 223300,China;College of Engineering,Nanjing Agricultural University,Nanjing 210031,China)
出处
《江苏农业学报》
CSCD
北大核心
2022年第6期1541-1549,共9页
Jiangsu Journal of Agricultural Sciences
基金
国家自然科学基金项目(31871522、32201664、31601223)
国家重点研发计划项目(2016YFD0300604、2017YFD0300409)
江苏省自然科学基金项目(BK20200277)
江苏省农业科技自主创新基金项目[CX(20)3073]
江苏省重点研发计划项目(BE2020409、BE2022351)
江苏省高等学校自然科学研究重大项目(18KJA180002)
江苏省农业科学院科学仪器开放共享自主研究课题[GX(21)1002]。
关键词
逐日平台
太阳高度角
作物生长信息传感器
智能传感器
作物监测
solar tracking platform
solar altitude angle
crop growth information sensor
smart sensor
crop monitoring
