Research And Implementation Of Communications Mode Converged In Wireless Sensor Networks

WSN has been applied to many fields, such as national defense, industry, agriculture, medical etc, depending on its functional pertinence, low cost, low energy consumption and other advantages. The key technology of combining WSN with local area network and wide area network is the fusion of WSN data communication with satellite communication technology and mobile communication technology. The WSN data communication integration has been studied in this paper in order to increase the flexibility of WSN application.WSN data communication integration has been studied in this paper. Firstly, WSN data communication technologies have been researched and analyzed, including short and long distance wireless communication technology. Then considering the actual needs of small current grounding fault monitoring system in the distribution network, strategy and structure of fusion of WSN data communication have been proposed. Secondly, the scheme of GPRS communication module has been designed autonomously, including power supply unit, main control chip STM32 minimum system, M35 communication module, peripheral circuit, the control procedures of main control unit and AT instruction program of communication unit. Then the design of 3G communication module has been completed, and software of Bootloader system, Linux system and 3G driver have been transplanted from other hosts to S3C6410. Finally, the GPRS communication module and Android monitoring software have been applied to small current grounding fault monitoring system in the distribution network. Some serial procedures ware developed and accomplishments of communication protocol of GPRS have been completed.