智能灌溉系统的设计毕业论文.doc

Tianjin University of Technology and Education 毕 业 设 计 智能灌溉系统的设计 Design of Intelligent Irrigation System 摘 要 近几年来，随着全球水资源的日趋紧张，世界各国都在积极探索行之有效的节水途径和措施。自动控制节水灌溉技术的高低代表着农业现代化的发展状况，灌溉系统自动化水平较低是制约我国高效农业发展的主要原因，节水灌溉一项现代化的工程技术，无论是工程节水、农业节水，还是管理节水都必须建立在节水灌溉设备实现产业化生产的基础上。单片机为控制核心采用模块化的设计方案 关键词：AT89S52；DHT11温湿度传感器；ULN2003达林顿驱动；LCD12864 ；DS1302 ABSTRACT In recent years, along with the global water resources is nervous, countries in the world explore actively effective ways and measures of water-saving. Automatic control the discretion of water-saving irrigation technologies represents the agricultural modernization, low level of the development situation of irrigation system automation become the main cause of restricting high-efficient agriculture development, water-saving irrigation is a modern engineering technology, whether engineering section water, water saving, or management of agricultural water must be based on the basis of water-saving irrigation equipment realizing industrialization production. Water-saving irrigation technique is used to deal with the water shortage, improve irrigation efficiency and be developed into one of the modern irrigation techniques. This topic design an intelligent irrigation system, this system select the AT89S52 SCM as control core, adopt the modularizing design scheme, which contain the temperature and humidity acquisition module, PH value detection module, clock module, stepping motor control module, keyboard interface module and LCD module.DHT11 and humidity sensor is selected as the core of temperature and humidity acquisition module, clock module is mainly composed of the clock DS1302 and crystal of 32.768kHz, stepping motor control circuit module adopted reach linton drive chip ULN2003, display circuit module is mainly consisted of the LCD12864 constitutes. In the loop (automatically) mode, the system can automatically detect on soil temperature and humidity, when actual humidity under alert value single-chip microcomputer a