無線感測網路之改良式SAS睡眠機制

由於科技的進步與快速地發展，無線感測網路被廣泛應用，尤其應用在監控環境狀態的無線感測網路，必須能夠長時間偵測並且收集與儲存分析來自環境中的變數資料，並將資料傳回至主機。但受限於無線感測網路都以無線微型網路，微小的硬體機體為主，微小的機體限制使得無線感測網路在電力資源上非常有限，故對電力消耗限制的要求是嚴謹且非常重要的事，這更加顯得如何有效的應用有限的電力是一個非常重要的議題。尤其應用在對容易造成重大傷害或重大污染的危險環境偵測與監控上，長時間監控且正確與及時的資料資訊傳送以利及時做出各種防治、應變甚至於以及時分析的資料進行救援的對策，使得災害能夠受到防治或達到降低傷害，更是無線感測網路監控這類容易造成重大傷害或重大污染的危險環境的重要且必備條件之一。要做到事件發生就能及時偵測到，且將資料能及時傳送，無線感測網路必需長時間處於工作狀態且迅速的傳送資料又能兼具節省電力，使無線感測網路的生命週期達到最長，這對無線感測網路設計與運作是一項非常艱鉅的挑戰。故精準、有效的睡眠機制是達成這項艱鉅任務的一種方法。本論文提出一個時間校正機制，用以改善無線感測網路之SAS睡眠機制，控制無線模組休眠時間的精確性。

關鍵字

無線感測網路； SAS睡眠機制；休眠時間；電力消耗； ISAS睡眠機制

並列摘要

Due to the cost and size reasons of sensor node in wireless sensor network (WSN), the limitation of electric power resource is a main problem of WSN. Especial wireless sensor network apply to monitor difussion stimulus (DS). Thus, how to manage the power energy of sensor node is an important issue in WSN. The sleep mechanism is an effective and electric mechanism of management often use, it can effectively save the electricity and lengthen the wireless sensor network life cycle. Although SAS sleep mechanism of wireless sensor network save the electricity and lengthen the wireless sensor network life cycle, but because each node timer is inconsistent, so the sleep time possible error make detection delay. This thesis proposes a correcting mechanism, it is improvement SAS sleep mechanism of wireless sensor network and control the accuracy of sleep module. It can reduce detection delay through this sleep mechanism, and increase the wireless sensor network life cycle.

並列關鍵字

Wireless Sensor Network ； Stimulus-based Adaptive Sleeping Method ； Sleeping Time ； Power Consumption ； Improved Stimulus-based Adaptive Sleeping Method

參考文獻

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國際替代計量

無線感測網路之改良式SAS睡眠機制

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