Reserach And Implementation Of Coordinator Node In Arm-Based Wireless Sensor Network

In recent years, more and more products for wireless sensor networks have been widely used in some related fields around world, and this technology will have good prospects of development. A design of coordinator in WSN based on ZigBee is proposed in this thesis for monitoring environmental temperature and humidity.The coordinator node which mainly consists of embedded platform TQ2440, CC2430and GPRS-DTU module is responsible for the function of WSN organization and data collecting and sending. The data of temperature and humidity collected from the front node in WSN are sent to an arm-based coordinator node for data storage and displaying, meanwhile transported to remote monitor center via GPRS-DTU. The paper proposed the transmission method that the node position information pre-coding is added to the first position of data packets. Acquisition node sends out the temperature and humidity data that contains the node number, thus remote control center could be locate the nodes of fixed position accurately. In order to manage effectively, we establish database on the coordinator to manage and to receive dates, the paper analyzed WinCE6.0transplant methods and SQLite database migration process under TQ2440development board platform. The paper studied the customization process of embedded systems on VS2005software and the use of protocol stack.In this paper, we analyzed and tested the performance of the wireless sensor network system. The experiments show that the design is stable, the data local storage and remote real-time transmission achieved.