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¹Ø¼ü´Ê£ºµ¥Æ¬»úSTC89C52£»¾ØÕó¼üÅÌ£»ÎÂʪ¶È´«¸ÐÆ÷£»12864Òº¾§ÆÁÏÔʾ£»¼ÌµçÆ÷

ABSTRACT

In the rapid development of modern agricultural production, many healthy agricultural products come from the cultivation of crops in hothouses. Hothouses applications have become increasingly widespread. It can create great economic value and social benefits for humans. Traditional greenhouse Temperature and Humidity Control System is entirely by manual control and measurement. Not only time-consuming, but also inefficient and ineffective. Now, in the hothouse, the intelligent control system will directly affect crop yields, growth and so on. In recent years ,a variety of microcontroller and sensor developed rapidly, so we can use them to make more perfect greenhouse intelligent control system. The design, which is based on STC89C52 microcontroller as the master chip, combined with DHT11 digital temperature and humidity sensors, 12864 Intelligent LCD screen and so on, has a simple structure, and the greenhouse temperature and humidity control system is easy to operate . We can program to achieve the intelligent control of greenhouse temperature and humidity. When the temperature in the greenhouse is too high , the buzzer alarm, and the relay begin to work to control air conditioning for heating ; contrary, the air conditioning is for cooling. The same applies to the humidity, controlled by humidifying and drying. Compared to other common greenhouse intelligent systems, this design has a low price, excellent performance, high security, stability , and many other advantages. In this control system of the greenhouse temperature and humidity vegetables reliably and efficiently are controlled and tested to ensure the growing of crop s under proper temperature and humidity conditions, where improving quality and productivity is easy, in order to achieve the results we want.

Key words£ºSCM STC89C52£»keyboard£»temperature and humidity sensors£»12864 LCD display£»relay

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