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Technology Research of Wireless Sensor Network Node with Localization Capacity

Author: PanFeng
Tutor: QinLi；MengLingJun
School: University of North
Course: Microelectronics and Solid State Electronics
Keywords: Wireless sensor network node Node localization Targeting Cross-correlation Delay
CLC: TN929.5
Type: Master's thesis
Year: 2008
Downloads: 167
Quote: 1
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Abstract


Wireless sensor networks (Wireless Sensor Network, WSN) is today the most popular computer networking research direction, the 21st century is considered one of the most important technologies . Wireless sensor network is composed of a large number of distribution with perception, computing and communication capabilities of micro-sensor nodes constitute a self-organized manner through a small range of the wireless network. Sensor nodes through mutual division of labor, real-time sensing , monitoring and collection of monitoring objects within the distribution area or the surrounding environment. Positioning technology for wireless sensor networks is a key technology that is the basis for most applications . Positioning of wireless sensor networks are generally divided into two categories, one is the network node positioning itself within that node localization , a class is in addition to the nodes within the network other than the target location is targeting . As wireless sensor network technology advances mature , its application will be more extensive , practical node positioning technology research to improve the performance of the sensor network technology and practicality to ensure there is an important theoretical significance and application value. This paper describes the localization and targeting of the calculation method for positioning process involves the delay estimation is analyzed to determine the generalized cross correlation method as a specific time delay estimation method ; designed with TI's TMS320F2812 digital signal processing as the core of the wireless sensor network node , this article explains the various modules including processor module, wireless communication module , the sensor module and a power management module design principles and implementation , the node in the complete multi-channel audio signal synchronous acquisition , storage and data processing can be achieved on the basis of the target node or the distance or angle positioning ; designed based on TMS320F2812 digital signal processor real-time positioning of the C language program , introduced the main design process and cross-correlation algorithm in the DSP implementation , and for the practical problems encountered during commissioning gives solutions ; Finally outdoor actual test results gives the conclusion and analysis.

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