土壤温湿度测量与控制系统设计
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密 惠 保
土壤温湿度是农作物生长的重要环境条件,它不仅直接影响作物根系的生长发育和土壤微生物的活动,而且土壤温湿度的变化还可诱发土壤中水分的运动。人们需要对土壤温湿度加以控制,使之保持在一定范围之内。采用单片机来对土壤温湿度进行控制 ,不仅具有控制方便、简单、灵活性大等优点 ,而且可以大幅度提高被控温湿度的技术指标 ,从而能够大大提高农作物的质量。
温室控制系统，通过对周围环境的温度，空气湿度的测量，输出通过LCD显示，并通过单片机对温湿度传感器测量的数据进行分析，输出控制信号去控制步进电机，实现控制温室天窗和侧窗的开关、天棚遮光，开灯照明，喷头，排风系统，并实现单片机控制板对参数进行控制。最终实现温室大棚的自动控制功能。
关键词：温室；温湿度；单片机；传感器；步进电机
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[资料来源：THINK58.com]
[来源：http://www.think58.com]
[资料来源：http://think58.com]
ABSTRACT
Soil temperature and humidity are important evironmental conditions for the crops growing. They not only have an direct effect on the crops roots growing and development and the activities of soil microorganism, but the changes in soil temperature and humidity can also lead to water motion in soil. In order to keep soil temperature and humidity within a certain range, people need to control them. Controlling the soil temperature and humidity by using single chip computer can not only have advantages of convenient in controlling, briefness and flexibility, but can also greatly increase the technology of controlled humidity. Thus it makes possible to improve the quality of the agricultural products.
The temperature of the surrounding evironment and air humidity are measured and its output is displayed by LCD in greenhouse controlling system. And then through analying the data measured by temperature and humidity sensor through single chip computer,the output signal is used to control stepping motor, vealizing to control the system of skylight and sidewindow, the system of shadow in skyhlight, illumination of switch, shower nozzle, ventilation systems, and realize controlling to parameters through single chip computer module. Eventually, it can realize the automatic controlling fuction towards greenhouse.
Key Words: greenhouse; temperature and humidity; singlechip; sensor; stepper motor
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