The Design Of Zigbee-based Wireless Sensor Module

The wireless sensor networks,because of its low-power, low cost, the characteristics of distributed and self-organization has brought a revolution in information perform. It combines with sensors, embedded in computing technology, moderm network and wireless communication technology, distributed information processing technology, through various types of miniature sensors, integrated real-time collaboration in monitoring and gathering perceptions of environmental or monitoring objects information.The collected information is sent wirelessly, and from their own network of multi-hop manner to the user terminal, realize the physical world, the computer world and the world of human society connected triple.Firstly, this paper introduced the basic concepts of wireless sensor,and basic development networks in domestic and international, topics significance,the content, combining ZigBee protocol architecture, protocol standards and the basic functions of each layer frame format and the network topology, making the practical application of theoretical preparation for the ZigBee wireless sensor networks. Then under the ZigBee wireless sensor network system to design the overall structure and select the appropriate hardware device,the ZigBee node to complete the hardware circuit design and PCB board productions. Secondly, its gives a brief introduction on the ZigBee software integrated development platform for IAR and ZStack protocol stack.for the development of the hardware platform ZStack stack is modified and transplantation, and in the protocol stack based on the preparation of the temperature and humidity, light intensity sensor driver, realized network coordinator, routers and end devices each node of data transfer. Finally analysisde the experimental results, from the results can be seen that the system can achieves the desired objectives basicly.,design reasonable, to collect and upload accurate temperature, humidity, light intensity data.The system using SamSung S3C2440 core design coordinator hardware, CC2430 module of hardware and the software board was completed. The author proceduresed the wireless sensor networks to collect accurate data,and smooth through the serial port to send data to the host computer.