摘要
针对小规模农业灌溉应用中对水肥一体机高精度及低成本的需求,设计了一套轻简型水肥一体化系统。为实现精准水肥比例调控,系统可根据用户输入的标准水肥比和测量实时水速,利用脉宽调制技术通过改变占空比来调控肥速,直至满足水肥比误差要求。为降低测量误差的影响,设计中对传感器所测流量及水肥比例调控过程进行修正补偿,提高水肥调控精度。此外,提供了触摸屏和远程APP两种控制模式,操控方式简单,用户只需根据实际情况输入灌溉水肥总量,系统即可自动完成控制过程。结果表明,所设计的轻简水肥一体系统在不同水肥比例要求下,水肥配比精度高,运行稳定,可实现精准施肥灌溉。
In order to meet the high precision and low cost requirements for water and fertilizer integrated machine in small-scale agricultural production,a kind of simple and light water and fertilizer integrated system was designed.In order to achieve accurate water and fertilizer ratio regulation,the system adjusts fertilizer speed by changing the duty cycle of the pulse width modulation technology until the error requirements are met,where the process is performed according to the standard water and fertilizer ratio input by users and the measured real-time water speed.Furthermore,to reduce the influence of measurement error,the flow rate measured by the sensor and the regulation process of water and fertilizer ratio are modified and optimized to improve the accuracy of water and fertilizer regulation.In addition,two simple control modes,i.e.,touch screen and remote App,are provided,where users only need to input the total irrigation water and fertilizer and the following control process are performed automatically.The results show that the water and fertilizer integrated system can provide high precision of water and fertilizer regulation,stable operation and can realize precise fertilization and irrigation.
作者
刘炳铄
兰鹏
魏珉
葛成恺
宋新财
孙丰刚
LIU Bing-shuo;LAN Peng;WEI Min;GE Cheng-kai;SONG Xin-cai;SUN Feng-gang(College of Information Science and Engineering,Shandong Agricultural University,Tai'an 271018,Shandong Province,China;College of Horticulture Science and Engineering,Shandong Agricultural University,Tai'an 271018,Shandong Province,China)
出处
《节水灌溉》
北大核心
2021年第2期75-79,共5页
Water Saving Irrigation
基金
山东省重大科技创新工程项目(2019JZZY010706)
山东省重点研发计划项目(2017CXGC0206,2019GNC106106)
山东省自然科学基金面上项目(ZR2019MF026)。
关键词
水肥一体化
精准调控
流量修正
轻简型远程APP
water and fertilizer integration
precise control
flow correction
light and simple type
remote App
