项目来源

国家重点研发计划(NKRD)

项目主持人

何雄奎

项目受资助机构

中国农业大学

项目编号

2017YFD0700903

立项年度

2017

立项时间

未公开

研究期限

未知 / 未知

项目级别

国家级

受资助金额

680.00万元

学科

智能农机装备

学科代码

未公开

基金类别

未公开

关键词

脉宽调制 ; 激光雷达 ; 在线混药 ; 喷杆 ; 变量施药 ; Pulse Width Modulation ; Lidar ; On-line Mixture ; Spray Boom ; Variable Drug Application

参与者

石毅新；蒋蘋；董祥

参与机构

湖南农业大学；现代农装股份有限公司

项目标书摘要：本研究针对农业生产对田间管理机械的需求，瞄准主粮作物及棉花、甘蔗等经济作物规模化生产田间管理，开发研制基于多功能高地隙底盘的精量施药装备，并进行试验实际应用考核，为农业生产实现节本增效提供装备支撑。采用智能探测识别技术探测获取作物冠层信息参数，开发基于作物密度指数的脉冲宽度调节变量施药技术研究与系统；通过实时在线精确混药技术研发与多功能高地隙底盘系统的集成，实现在主粮作物及棉花、甘蔗等经济作物上精量施药装备系列产品研制等环节关键技术上的突破。利用激光扫描Lidar 探测技术计算激光发射时间与反射时间的差值，从而得到距离，扫描形成田间作物三维模型，根据此模型进一步计算作物密度、生长特征参数等，确定喷雾作业参数。整合地理信息系统和气象信息系统，利用脉冲宽度调节技术对电磁阀的开关组合和开闭程度进行实时调节，最终实现精准变量喷雾。在线混药系统将水、药分离，将高浓度药液储存于药箱中，通过电磁阀对流量进行精确调节，控制高浓度药液定量注入水路系统中，混合液体通过研发的高效混药器进行混合，实现不同浓度的配比，进入喷雾系统实现均匀变量喷雾。最终研制的基于多功能高地隙底盘的精量施药机可以实现主粮作物及棉花、甘蔗等经济作物规模化生产田间管理高智能化、高精度、高均匀的精准施药，为农药的精确精准均匀化施用提供技术支持。

Application Abstract: Aiming at the demand of agricultural production for field management machinery,aiming at the field management of large-scale production of main grain crops,cotton,sugarcane and other cash crops,this study developed precision pesticide application equipment based on multi-functional high-gap chassis,and carried out test and practical application assessment to provide equipment support for agricultural production to achieve cost-saving and efficiency-increasing.Intelligent detection and recognition technology was used to detect and obtain information parameters of crop canopy,and the research and system of pulse width adjustable variable pesticide application technology based on crop density index was developed.The integration of real-time on-line accurate pesticide mixing technology and multi-functional high-gap chassis system was carried out to realize breakthroughs in key technologies of top-quality spraying equipment in cash crops such as staple grain crops,cotton and sugarcane.Using laser scanning Lidar detection technology calculated the difference between the time of laser emission and the reflection time,and the distance was obtained.The three-dimensional model of field crops was formed by scanning.Based on this model,the parameters of crop density and growth characteristics were further calculated,and the parameters of spray operation were determined.Integrating the GIS and meteorological information system,the pulse width adjustment technology was used to adjust the switch combination and opening degree of the solenoid valve in real time to achieve precise variable spray.The online mixed medicine system separated the water and the medicine,stored the high concentration liquid in the medicine box,accurately controlled the flow through the electromagnetic valve,controlled the injection of high concentration liquid into the water system quantitatively,and the mixed liquid was mixed by the highly efficient mixing device developed by the research and development to achieve the different concentration ratio and uniform variable in the spray system.Finally,the precision pesticide applicator based on multi-functional high-gap chassis can realize the large-scale production of main grain crops,cotton,sugarcane and other cash crops with high intelligence,high precision and high uniformity of field management,and provide technical support for the accurate and uniform application.

项目受资助省

北京市