The System Of Humiture Detection In The Greenhouse Based On Zigbee

Temperature and humidity is two important factors to ensure crop grow well, so detection of temperature and humidity is particularly important.The traditional detection of temperature and humidity is depended on instruments to detect and record in the greenhouse, and then adjust temperature and humidity through the corresponding equipment.If it can detect the temperture and humidity through the formation of the wireless network, which avoids the problem of the traditional cable transmission wiring complex,and it is difficult to check wiring problem. And reduce the cost, so the detection of temperature and humidity is more convenient.This purpose of this thesis is to design The System of Humiture Detection in the Greenhouse Based on ZigBee. In the greenhouse, the sensor node is very many, so the wireless network system using a sensor node design is SOC solution, namely the combination of the main control chip CC2530and temperature and humidity sensor DHT11, realize low cost, small stability characteristics.Software programming uses the IAR integrated development environment,the xoftware design is mainly divided into three parts, the sensor node collecting program, coordinator network procedures, PC interface programming, in addition to a number of serial communication program.After the ZigBee protocol stack transportation and cocrdinator creates network, terminal nodes are added to the network.At first, terminal nodes acquire temperature and humidity data, and then through the ZigBee protocol to send data to the coordinator, then coordinator send data to the host computer through the serial communication protocol, at last, PC data displayed in the interface. So as to realize the function of temperature and humidity data display real time.The ZigBee is a short distance, low power consumption, low cost wireless communication technology, its application to greenhouse detection system can realize automation, has strong practicability and application prospect.