無線感測器網路之研製並應用於工廠馬達監測

Wireless Sensor Network Design and Implementation for Factory Motors Monitoring

陳俊錩(Chun-Chang Chen)

指導教授 ： 李仁貴

國立臺北科技大學/機電學院/電腦與通訊研究所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00117

摘要

本論文主要以工廠監測需求為出發點，提出一個整合環境監測的安全系統，前端的環境感測裝置為固定放置感興趣的位置，且均具備短距離無線通訊能力。為能使系統更適合於工廠之應用，故引入無線感測器網路技術，將感測到的環境參數透過其多點跳躍接力方式傳至資料收集點（Sink），再經由網際網路將資料上傳至資料中心伺服器，以進行環境監測與資料管理；由於無線環境感測節點可能經常更換電池，造成管理人員不便，故引入一種省電的MAC，稱為『E-MAC』，將資訊上傳收集至Sink節點，又因為相鄰節點關係通常資訊交換較為頻繁（又稱1個Hop距離），所以二個節點間產生一個Edge，來表示此傳輸路徑關係，而這個Edge包含Down Link路徑及Up Link路徑，然而此Edge的運作交由多個行程安排（假設每個節點已經同步），此行程由Sink節點決定，在特定時槽時間內進行資料交換，藉此達到省電之目的。

關鍵字

感測器網路 ； 環境監測 ； 省電機制 ； 同步機制 ； 時槽分配

並列摘要

This thesis mainly takes the factory demand as a starting point. It proposes a safety system which integrates environmental monitoring. The equipment of environmental sensor of front end was placed on the fixed position in need of monitoring. It also has capability of short-range wireless communication. The wireless sensor network (WSN) technique is used to make our system more adaptive to the environment of factory. With WSN technique the sensed environmental parameter is transmitted to the data sink via multi-hop relay. The data is then uploaded to the data central server by Internet for environmental monitoring and data management. A power-saving “E-MAC” protocol is used to upload data to sink node to prevent frequent replacement of batteries for wireless environmental sensor nodes which could cause inconvenience to system administrators. Also because of the neighboring nodes, also know as 1-Hop neighbor, may exchange data frequently, we use an edge to represent the path between these two nodes. The edge includes both Down-Link path and Up-Link path. However, the execution of the edge is scheduled by a scheduler assuming that all nodes are synchronized. The sink node determines the schedule for exchanging data in specific time slots to achieve the purpose of power saving.

並列關鍵字

Wireless Sensor Network ； Environment Monitoring ； Power-Saving ； Clock Synchronization ； Time-slot assignment

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