Abstract
Testing and controlling system of the intelligent greenhouse environment could adjust automatically all kinds of the circumstance condition by the demand of the vegetable development. It is the basis of the automation and science of the greenhouse management. It makes the the greenhouse vegetable to get better indoor condition than outdoor in the unfit season by analyzing the data and combining the rules of the vegetable growth and controlling the circumstance condition in order to achieve high quality and high yield.
In this paper, temperature and humidity monitoring AT89C52 MCU system design theory. This system uses AT89C52 single chip microcomputer as the controller, DHT90 was chosen as a temperature and humidity sensor. After series of internal signal processing and analog-to-digital conversion, digital DATA were sent into AT89C52 single-chip microcomputer for the calculation and finally displayed on a monitor.
Keywords: Microcontroller、Temperature and Humidity、Sensors
