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標題: 利用室內圖資之即時室內定位系統
A Real-Time Indoor Positioning System Using the Indoor Map Information
作者: 王澤馥
Wang, Tse-Fu
關鍵字: Wireless Sensor Network;無線感測網路;Indoor Positioning;802.15.4/ZigBee;室內定位;802.15.4/ZigBee
出版社: 通訊工程研究所
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近年來,無線感測網路的感測單元越來越發達,其應用也越來越廣泛,而其中一個很重要的應用,就是室內定位;定位系統以全球定位系統(Global Positioning System, GPS)最廣為人知,全球定位系統經過多年的研究與開發,其精確度已經達到一定的水準,但是,全球定位系統必須要和衛星保持直視(Line Of Sight, LOS)才能進行定位,而且在系統建置的成本上也偏高。


本論文利用IEEE 802.15.4/ZigBee技術建構出一個室內無線感測網路的環境,並且利用RSSI值和事先建立好的資料庫找出未知節點與信標節點的距離,使用兩圓訊號強度演算法求得一個預估點,再配合室內圖資的概念定位出最後的位置。

In recent years, the sensor units of the wireless sensor network have made tremendous progress, and it has been used in a wide variety of applications. Indoor positioning system is the important one of those applications. The most well-known positioning system is GPS (global positioning system). GPS has been researched and developed for many years, and provides great accuracy in the location system. However, GPS not only requires a LOS (line of sight) to satellite, but it also needs high cost to implement the system.

As the result, we cannot implement GPS for indoor positioning system owing to its signal which easily influenced by building in indoor environment and the receivers which cannot keep line of sight to satellite. To build an indoor positioning environment we need inexpensive devices. For these reasons, we use WSN to implement an indoor positioning system.

The thesis applies IEEE 802.15.4/ZigBee technology to construct an indoor wireless sensor networks environment. We find the distance between beacon node and unknown node by using RSSI and the pre-collection database. Finally, we use the signal strength of two intersected circles algorithm and indoor map information to calculate the position of unknown node.
其他識別: U0005-0407201209475600
Appears in Collections:通訊工程研究所

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