水下無線感測網路中資料收集器路徑規劃研究

Tour Planning for AUV Data Gathering in Underwater Wireless Sensor Networks

隨著無線感測網路的發展，孕育生命的海洋探測也逐漸被重視。本論文透過水下移動式資料收集器收集感測資訊。但因為移動式資料收集器的電量有限，無法將感測器的資訊一次性收集，本論文加入充電站讓移動式資料收集器可以做充電的動作。而在水下環境中考量到水中傳輸高延遲性的問題。因此在本篇論文提出一個在水下無線感測網路中路徑規劃策略，利用移動式資料收集器將水下佈建的感測器做資料收集動作，避免移動路徑過長導致收集的時間過多。最後將與廣為人知的水下蒐集資料的路徑做法UDMP做比較。而實驗結果顯示在移動路徑長度與收集時間這兩項評估因子都表現得比UDMP較好。

Recently, with the advance in wireless communication and sensing technology, the ocean exploration has attracted great attention for underwater acoustic sensor networks (UASNs). Sensors are deployed for data sensing. Due to the energy limitation, the sensing hole may happen in UASNs. Therefore, the Autonomous Underwater Vehicle (AUV) is used for sensing data gathering. The docking station is also applied to recharge the energy of AUVs. However, acoustic transmission will lead to huge propagation delay such that it is much difficult to plan the tour path of AUVs. In this paper, a tour planning algorithm is proposed for data gathering in UASNs. The simulation results show that the proposed protocol perform better than UDMP in tour length and data collection time.