基於無線感測網路具情境感知系統之設計與實作

Design and Implementation of Context-Aware System over Wireless Sensor Network

許君竹(Chun-Chu Hsu)

指導教授 ： 黃文增

國立臺北科技大學/電資學院/電資碩士班/碩士(2008年)

摘要

四種基本環境因素，光線、聲音、溼度和溫度，極容易影響居家生活中的個人情緒之起伏。因此，如何控制居家生活的環境因素是熱門研究課題之ㄧ。在本論文中，架構在 ZigBee無線感測網路的機制下，我們設計與實做一套可以達到即時監測輸入條件與調適個人居家環境系統，讓居家主人能依自己喜好環境因素設定輸入變因，創造出個人品味的居家環境。因環境輸出系統實作的實質限制，我們以全彩LED表示環境輸出的變化量，同時也可藉由一些控制燈號，得知需啟動各種輸出裝置。
我們所發展的ZigBee無線感測網路系統是使用類似星狀拓樸，同時採取多個無線輸入感測器和多個無線顯示端來達到控制環境因素變化。在原始ZigBee頻寬限制約為140K bps下，我們所實作無線感測網路系統在兩層拓墣架構下，可同時控制此4個環境因素感測器的20組不同的輸入裝置與2個全彩LED的輸出裝置；在掃描頻率為每秒一次時，可控制200組的輸出/入裝置組合。更進一步，為了提高ZigBee傳輸距離限制，在我們使用ADS軟體模擬與改善ZigBee 模組的曲折天線部份參數後，我們實作較佳化佈線規格的曲折天線。最後，從整個系統的實測，我們系統可以提供最大傳輸距離為36公尺，可以符合一般建築物的傳送距離規範需求。

關鍵字

無線感測網路 ； ZigBee ； 感測器 ； 情境感知 ； 曲折天線

並列摘要

Four kinds of basic environmental factors, light, sound, humidity, and temperature, extremely affect the wave of one mood in the home-life. Therefore, how to control these environmental factors of he home-life is one of hot study topics. In this thesis, based on the ZigBee wireless sensor network mechanisms, we design and implement one system with the real-time control the input conditions and adaptive one’s home-environments such that an owner can first set one’s preferences of input environmental factors and then create the individual flavor. Since there is an essential difficulty to implement the output systems of environments, full-colorable LED display are employed here as output change amount of environments. Moreover, some LEDs indicate to start various kinds of output devices.
Our developed ZigBee WSN system is to use the similar star topological structure. There are many wireless input sensors and output devices to control the various conditions of environmental factors. The bandwidth of the primitive ZigBee is about 140 kbps; there are two layers topological structure in our WSN design. Simultaneously, our system can control 20 input devices, which each device just contains one kind sensor of them, and 2 output full-colorable LED display devices. While scanning frequency as once per second, our designed system can control up to 200 devices by combinations of input and output devices. Moreover, to promote the ZigBee transmission distance, after we use ADS software to simulate and then improve the parameters of Serpentine-antenna, the optimal layout rulers of Serpentine-antenna can be realized in this thesis. Finally, from our experiments, the transmission distance of our design can be up to 36 meters length to meet the standardizing demand of general building.

並列關鍵字

Wireless Sensor Network ； ZigBee ； Sensor device ； Context-Aware ； Serpentine-Antenna

參考文獻

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