In view of the greenhouse crop production in different season needing larger output,so more and more farmers use the greenhouse planting vegetables,and the control of temperature,humidity and light are the key elements of the greenhouse.The traditional method of measuring temperature and humidity and light has great limitations and shortcomings.The system uses 51 single chip microcomputer as the core controller,which collects data through digital temperature,humidity and light through the greenhouse temperature and humidity and light sensor.The 51 single chip microcomputer makes the corresponding analysis and processing according to the received data,which result are showed on the LCD1602 LCD screen.It realized the automatic monitoring relative temperature and humidity and light,which makes the greenhouse temperature and humidity values to appropriate range.%鉴于温棚种植业在不同的季节需有较大的产量,所以越来越多的农民采用温棚种植蔬菜,而温度、湿度和光照度的控制是温棚得到高产量的关键要素,且传统的测量温湿度和光照度方法具有很大的局限性和不足之处.该系统以51单片机为核心控制器,通过数字温湿度传感器和光照传感器对温棚的温湿度和光照度进行数据采集,单片机根据收到的数据做出相应的分析和处理,其结果显示在LCD1602液晶显示屏上,实现了自动监测棚内温湿度和光照度,使温棚温湿度和光照度值达到适宜的范围.
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