Design And Implementation Of Wireless Weather Sensor Network Measurement And Control System Based On Mobile Terminal

Meteorological monitoring plays an important role in agricultural production,industrial development,transportation,environmental protection,military,aerospace,and many other aspects,and is closely related to people's daily lives.However,collection sites of meteorological data are often in the wild,and there are many locations,which makes manual detection time-consuming and laborious.The use of wireless sensor network technology can enable the meteorological sensors distributed in various places to automatically upload data through wireless means,thus saving time and labor for meteorological information collection and management.In addition,with the rapid development of mobile Internet,smart mobile terminals are increasingly used by people for remote information exchange.Therefore,combining the mobile Internet with the wireless weather sensor network to form a wireless weather sensor network monitoring and control system based on the mobile platform will be an important development direction in the field of meteorological monitoring.At present,there have been some studies on using smart mobile terminals to achieve meteorological observation and control in China,but the number of studies in this direction is still relatively small,and further research is still needed.In this paper,a wireless weather sensor network measurement and control system based on mobile terminal is designed and implemented.The mobile terminal can be connected to a ZigBee based weather sensor network via TCP/IP network,and can also be directly connected to the weather sensor node via Bluetooth.The functions of the system include: request and display of real-time data of each node,request of historical data,graphs and tables display of historical data,query of node power,query and calibration of node time,query and modification of node sensing interval,the opening of node low power mode.In this paper,the network structure as well as software and hardware architecture of the measurement and control system are designed.Through the design of the gateway module between the TCP/IP network and the ZigBee network,and the design of the mobile terminal software,the communication function of the measurement and control system is realized.The specific functions of mobile terminal software are designed and realized.The test,analysis and optimization of the function and performance of the measurement and control system were carried out,and the physical model which met the requirements of the design indexes was finally obtained.During the design and implementation of the system,Android phone is used as smart mobile terminal,and Eclipse is used for software design.The software part of the gateway module is designed and realized by Keil,and the hardware circuit and layout are designed by Altium Designer.After several tests and optimization,the design of the measurement and control system has met the requirements of the design indexes,and the packet loss rate is less than 10% in both two communication methods implemented.What's more,some design concepts of functions like inter-network communication with different protocols,compatible with node timing sleep mode communication,compatible with TCP/IP and Bluetooth connectivity,mobile terminal processing and display of meteorological data also have certain reference value for the design and research of the weather sensor network data monitoring and control using the mobile terminal.