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研究生:鄭博文
研究生(外文):Po-Wen Cheng
論文名稱:設計與實作一個智慧型移動式感應器節點
論文名稱(外文):Design and Implementation of a Smart Mobile Sensor Node
指導教授:許健平許健平引用關係
指導教授(外文):Jang-Ping Sheu
學位類別:碩士
校院名稱:國立中央大學
系所名稱:資訊工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:英文
論文頁數:45
中文關鍵詞:低電量移動式感應器節點導航無線感應器網路
外文關鍵詞:wireless sensor networksnavigationlow-energymobile sensor node
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無線感應器網路(Wireless Sensor Network)是由許多感應器(Sensor node)所組成,感應器主要是在特定的感應範圍內監控某物體或環境的變化,感應器經由無線感應器網路傳回感應結果給使用者,在民生、軍事、航太或是醫學都有廣泛的應用。在無線感應器網路中感應器大部份都是以電池來當作主要電力來源,常常有一些感應器因為工作量較大而容易沒電,這樣會這成整個網路不連通且失去重要的感測資訊。因此在本篇論文中,我們設計與實作出一個可移動式感應器,利用此可移動式感應器來尋找出網路中快沒電的感應器並放置一個新的感應器來取代沒電的感應器。我們提出一個引導可移動式感應器的演算法,此演算法不需要任何的感應器位置資訊,只需要利用收到的訊號強度來引導可移動式感應器。由實驗結果證明,可移動式感應器能利用我們所提出來的演算法成功的到達目的地。
Most wireless sensor networks consist of a large number of static, low-power, short-lived, and unreliable sensors. We consider sensor networks that consist of static and mobile nodes. Integrating both types of devices enables new applications such as node replacement, location assignment, hole and partition recovery, autonomous deployment and redeployment, and dynamic sensing. In this thesis, we design a smart mobile sensor node to implement an application of replacement. There are some sensor nodes easy to exhaust their energy because of heavy workload. It will cause the wireless sensor network be partitioned into subgroups. We present a node replacement algorithm by using our implemented mobile sensor nodes. In our algorithm, the mobile sensor nodes can navigate to the low-energy sensor nodes and replace them by disposing new sensor nodes automatically without any location information. The navigation algorithm is based on signal strength received between the communication nodes. Finally, we experiment results show that the mobile sensor nodes could achieve their tasks successfully.
1 Introduction 1

2 System Organization 5
2.1 MICA Motes ............................ 6
2.2 Sensing ............................... 7
2.3 Motor Board ........................... 8
2.4 Base of Mobile Sensor Node ............ 10
2.5 TinyOS................................. 11

3 Navigation Protocol 13
3.1 Initialization ........................ 14
3.2 Navigation Between Two Sensor Nodes .. 19
3.3 Multiple Requests Handling ........... 26

4 Experiment Results 32
4.1 Experiment............................. 32
4.2 Applications of Mobile Sensor Nodes ... 38

5 Conclusions 40
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[20] Atmel Corporation: Online available at: http://www.atmel.com

[21] Chipcon Inc.: Online available at: http://www.chipcon.com

[22] Crossbow Technology Inc.: Online available at: http://www.xbow.com

[23] NesC: Online available at: http://nescc.sourceforge.net

[24] TAMIYA Inc.: Online available at: http://www.tamiya.com

[25] TinyOS: Online available at: http://webs.cs.berkeley.edu/tos

[26] TOSHIBA Corporation: Online available at: http://www.semicon.toshiba.co.jp
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