基于气象预报信息的绿地灌溉模糊控制器

作者：胡新华，戴素江，俞冬丽，李银海 日期：2009-08-18/span> 浏览：3015 查看PDF文档

基于气象预报信息的绿地灌溉模糊控制器

胡新华，戴素江，俞冬丽，李银海
(金华职业技术学院 机电工程学院，浙江 金华 321017)

摘要：针对目前城市绿地巨大的耗水量与城市严重缺水之间的矛盾，设计了一种能够充分利用气象预报信息的绿地灌溉模糊控制器。该控制器采用89C51单片机为核心；通过T35通讯模块和水势变送器得到气象预报信息和绿地土壤水势两个输入变量；再对这两个变量模糊化、模糊推理和解模糊；并以绿地植物需水量为输出，获得绿地灌溉量，从而实现了对绿地灌溉的精确控制。同时，利用天气预报信息，对控制器进行不定期唤醒，达到了节电的目的。实验结果表明，该控制器能快速准确地计算出城市绿地的灌溉量,有效地实现了节水灌溉。
关键词：气象预报信息；土壤水势；绿地灌溉；模糊控制器；单片机
中图分类号：TP273文献标识码：A文章编号：1001-4551(2009)08-0108-03

Greenland irrigation fuzzy controller based on weather forecast information
HU Xin-hua, DAI Su-jiang, YU Dong-li, LI Yin-hai
(College of Mechanical and Electronic Engineering, Jinhua College of Profession & Technology, Jinhua 321017, China)
Abstract: Aiming at the problem between a lot of water use and seriously lack of water on urban greenland , greenland irrigation fuzzy controller based on weather forecast information was developed. The controller was managed by single chip micro-computer(SCM) 89C51. The weather forecast information gotten from T35 and greenland soil water potential were regarded as input variables, and the controlled variable was acquired by fuzzification of input variable, fuzzy inferential and de-fuzzification. The required water capacity of the greenland plant was regarded as the output variable. In order to save power,the controller was waked up according to weather forecast information. The results indicate that the controller can calculate the required-water capacity of the greenland promptly and fulfill water-saving irrigation.
Key words: weather forecast information; soil water potential; greenland irrigation; fuzzy controller; single chip microcomputer(SCM)
参考文献(References):
［1］茆智，李远华,李会昌.实时灌溉预报［J］.中国工程科学，2002，4（5）：24-32.
［2］江明，陈其工，晏行芳.基于模糊控制的精确灌溉系统［J］.农业工程学报，2005，21（10）：17-19.
［3］张兵，袁寿其，成立.作物需水量模糊决策系统的设计与研究［J］.农机化研究，2003（2）：117-119.
［4］ZHANG Quan-xing, WU C H, TILT K. Application of Fuzzy Logic in an Irrigation Control System［C］. Proceedings of The IEEE International Conference on Industrial Technology,1996.
［5］FERGUSON R, GOTWAY C A. Soil Sampling for Sitespecific Nitrogen Management［C］//Precision Agriculture Proceeding of the 3rd International Conference, ASA, CSSSA, SSSA,1996:13-22.
［6］吴晓莉，林哲辉.Matlab辅助模糊系统设计［M］. 西安：西安电子科技大学出版社，2002.
［7］孙庚山，兰西柱.工程模糊控制［M］.北京：机械工业出版社，1995.