The Design And Implementation Of Agricultural Information Acquisition System Based On ZigBee And Qt

With the improvement of people's living standard and the rapid development of science and technology,China's agricultural production technology is also changing,and the scale of agricultural products is constantly expanding.At the same time,the growth environment problem caused by the surge in the number is becoming more and more serious.On the one hand,providing detailed growth information of agricultural products to consumers can ensure the safety and health of products purchased and promote the benign development of agricultural market;On the other hand,real-time monitoring of the growth environment of agricultural products can prevent diseases and insect pests and improve the quality of agricultural products.Based on the research of wireless sensor network and open source graphics library,this paper designs and implements a set of agricultural product information acquisition system based on ZigBee and Qt.The system includes a front-end wireless sensor network and a back-end regional gateway.Front terminal nodes in a wireless sensor network to collect the current agricultural growth environment of temperature and humidity are connected to the regional gateway and sent to the coordinator,and photograph of agricultural products,through the image acquisition module will be static images collected by ZigBee agreement send to coordinator,the coordinator via a serial port to the data to the regional gateway.The regional gateway is equipped with an embedded Linux operating system and deployed with a Qt runtime.It is responsible for collecting wireless data from the coordinator and measuring relevant parameters of the current region through pH sensor,conductivity sensor and illumination intensity sensor connected to it.The agricultural product information is stored in the storage space with small local capacity in the regional gateway through SQLite database,and then all the data including images are sent to the background server through TCP protocol.The background server can store all the historical information of agricultural products into a larger storage space.After the actual debugging and operation,the function of collecting and transmitting the temperature and humidity and static images of the growth environment of agricultural products through ZigBee was finally realized,and the lighting,conductivity and pH parameters were collected through the 485 bus sensor cluster.The system has some advantages in stability,extensibility and user experience,and has a broad application prospect.