农业机械学报2018，Vol.49Issue(5)：84-92,9.DOI:10.6041/j.issn.1000-1298.2018.05.010
2BFJ-24型小麦精量播种变量施肥机设计与试验
Design and Test of 2BFJ-24 Type Variable Fertilizer and Wheat Precision Seed Sowing Machine
摘要
Abstract
In order to improve the winter wheat sowing quality and fertilizer utilization rate and reduce production costs,and aiming at the extensive and low efficient characteristics of sowing and fertilizer application in winter wheat with moderate scale in central of China,based on the vehicle-based sensing of the CAN bus communication protocol and PIC control fusion technology,the 2BFJ-24 wheat precision sowing and variable fertilizer machine was designed.The system of machine consisted of sowing and fertilizing machinery parts,seed leakage monitoring parts,fertilizer jam alarm parts,variable fertilization control parts and vehicle computer.The seed row seed flow situation can be real-time monitored through the infrared photoelectric detection,and fertilizer drop signal can be real-time accessed by detecting changes in dielectric constant of the lower end of the fertilizer pipe.The machine field position can be obtained through the integrated GPS module,the fertilizer amount for current target location can be determined combined with the pre-loaded plots prescription,and the current fertilizer and flow information can be calculated based on the pressure sensor and computer to,according to the machine speed to adjust fertilizer amount in time,and ultimately achieve the process of sowing leaking or fertilizer blocked alarm and precision fertilization purposes.The field test results showed that the whole machine monitoring system can adapt to the complex environment field,with leak detection accuracy of up to 91％ or more,fertilizer jam alarm error was less than 2％,and the variable fertilization accuracy rate was more than 96％,indicating that it had good practicality and economy.关键词
小麦/播种施肥机/变量控制/监测报警/设计/试验Key words
wheat/fertilizer machine/variable control/monitoring alarm/design/experiment分类
农业科技引用本文复制引用
金鑫,李倩文,苑严伟,邱兆美,周利明,贺智涛..2BFJ-24型小麦精量播种变量施肥机设计与试验[J].农业机械学报,2018,49(5):84-92,9.基金项目
国家重点研发计划项目(2017YFD0700502)和河南省科技开放合作项目(152106000036) （2017YFD0700502）
