碎形幾何應用於無線感測網路之研究

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碎形几何应用於无线感测网路之研究

The Study of Fractal Geometry in Wireless Sensor Networks

谢政达 , 硕士　　导师：陈启彰　　

繁体中文

无线感测网路；碎形几何；摩尔曲线；移动锚节点； Wireless Sensor Network ； Fractal Geometry ； Node-Gosper Curve ； Moore Curve ； Mobile Sink

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摘要 │ 参考文献 (19) │ 国际计量

摘要〈TOP〉

并列摘要〈TOP〉

There are a growing number of studies focused on the fractal geometry in recent years. Fractal geometry is a disciplinary research of non-integer dimension graphics, and all of them have a kind of nesting or recursive structure. Previous studies found that curves with seemingly messy irregularity in the world are actually chaos with order. Scientists have found that there are rules to produce them.
 This paper attempts to use the characteristics of nesting or recursive structure of fractal geometry to the routing paths of wireless sensor networks (WSNs). We selected two space filling curves, Node-Gosper Curve and Moore curve, as the goal of our study.
 Node-Gosper Curve is based on node-replacement curve and its fractal dimension is two. The order one of Node-Gosper Curve consists of seven segments, and when its order grows, it can fill a similar hexagonal area. To be a routing path of a mobile sink in a WSN, we can adjust the order of Node-Gosper Curve in accordance with the transmission range, size of sensing area, parameters, etc. It ensures that all sensors can be visited in the sensing area, and thus helps sensor’s self-localization, collecting and transmitting information, etc.
 Most of the space-filling curves have no self-loop. Thus, the distance between the start point and the end point is very large, which causes a mobile beacon node needs to spend extra path from the end point returning to the start point. However, Moore curve have the self-loop characteristic, its start point and the end point are very close. In this thesis, Moore curve was applied to the mobile beacon path planning in which the mobile beacon follows the path to travel entire sensing area and stops at the center of each square cluster to collected information from the nodes with sensing events. With the self-loop characteristic of Moore curve, we expected the Moore curve can more quickly get to each sensor to collect information than other space-filling curves, and therefore the Moore curve can reduce sensor’s transmission delay.

参考文献 ( 19 ) 〈TOP〉

[4]王圣博, “无线感测网路的节点定位问题之研究—使用移动锚节点”, 义守大学资讯工程学系硕士论文, 2015.
连结：
[9]Bahi, J. M., A. Makhoul and A. Mostefaoui, “A Mobile Beacon Based Approach for Sensor Network Localization,” Wireless and Mobile Computing, Networking and Communications, 2007, WiMOB 2007, Third IEEE International Conference on.
连结：
[10]Jacques M. Bahi, Abdallah Makhoul and Ahmed Mostefaoui, “Hilbert mobile beacon for localisation and coverage in sensor networks,” International Journal of Systems Science, Vol. 39, Iss, 11, 2008.
连结：
[11]C.-C. Chen and T.-C. Lin, “A Low-Cost Anchor Placement Strategy for Range-Free Localization Problems in Wireless Sensor Networks,” International Journal of Distributed Sensor Networks, vol. 2013, pp. 1-12, 2013.
连结：
[12]梁进鸿, “无线感测网路的锚感测器资料收集之研究”, 义守大学资讯工程学系硕士论文, 2015.
连结：

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使用DOI作为永久连结

引用含有DOI的文献

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。 如想对DOI的使用与概念有进一步了解，请参考 （ ） 。

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。