文档介绍：蔬菜大棚恒温控制系统的设计
摘要
农业是21世纪最有活力的新兴产业,温度是设施农业的典范,自动检测与控制系统则是现代智能化温度的重要组成部分。温度监测是控制农作物生长的关键因素,传统温度调节方式已不能满足现代温室高精度、快速采集及响应的要求,因此找出一种能够很好解决上诉问题的方法势在必行。
本文运用数字传感技术、单片机技术、以AT89C51为中央处理器,研制出了一套能实现蔬菜大棚温度实时检测与控制的恒温控制系统。该系统运用DS18B20数字温度传感器直接读出温度,运用DS1302来显示日历,并通过程序设计来设定温度超过规定的上下限实时报警及控制输出设备(加热器或风扇)自动调节温度,使大棚中温度适宜作物的最佳值,为作物提供良好的生长环境。
该蔬菜大棚恒温控制系统具有操作简单、适用性广、价格低廉的特点,能够根据需要实现对大棚温度饿自动调节与控制。它的研究与设计具有非常重要的意义。
关键词: 51单片机; DS18B20; DS1302; 恒温控制
The design of greenhouse constant temperature
control system
Abstract
  Agriculture is the most dynamic 21st century emerging industries, the temperature is a model of agricultural facilities, the automatic detection and the control system are the modern intellectualization greenhouse important part. Temperature monitoring is a key factor in controlling the growth of crops, traditional approaches have failed to meet the temperature control precision of modern greenhouse, rapid acquisition and respond to the request, so find a way to solved the problem of the method of appeal is imperative.
In this paper, digital sensor technology, SCM technology to AT89C51 as CPU, developed a set of greenhouses, the temperature can achieve real-time detection and control of temperature control system. The system uses digital temperature sensor DS18B20 direct readout of temperature, the use of DS1302 to display the calendar, and through programs designed to set the temperature exceeds the limits provided for real-time alarm and control output devices (heaters or fan) automatically adjust the temperature, so that sheds temperature suitable for crops, the best value for the crop to provide a good growing environment.
The vegetable greenhouse temperature control system is simple, wide applicability, low cost, and can achieve the greenhouse temperature required automatic adjustment and control hunger. Its research and the design have the extremely vital practical significance.
Key words : 51 MCU; DS18B20 ; DS1302; temperature control
目录
摘要 1