淡江大學機構典藏:Item 987654321/54200
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    题名: 超音波感測資訊融合之未知環境地圖建立
    其它题名: Map building of unknown environment based on sensor fusion of ultrasonic ranging data
    作者: 陳秉宏;Chen, Bing-Hung
    贡献者: 淡江大學電機工程學系碩士班
    許陳鑑;Hsu, Chen-Chien
    关键词: 感測器融合;Dempster-Shafer 理論;障礙物格狀地圖;sensor fusion;Dempster-Shafer theory;occupancy grid map
    日期: 2010
    上传时间: 2011-06-16 22:09:20 (UTC+8)
    摘要: 本論文提供ㄧ基於已確立之超音波感測器模型並配合感測器融合技術,用以改進障礙物格狀地圖建立之方法。首先,對配置在Pioneer P3-DX Mobile Robot上的超音波感測器,進行實驗測試與數學推論以建立適當的感測器模型。用以在偵測障礙物空間時,給定地圖中網格一機率值,來表示該網格存在障礙物之可能性。
    再利用Dempster-Shafer 理論進行感測器融合,將網格機率加以結合、運算得出一新機率值,進一步確認該網格存在障礙物之機率。
    隨著機器人移動,地圖內格點資訊不斷地被計算更新。最終便可描繪出一未知環境的輪廓,獲得一正確、完整障礙物格狀地圖,以用於自主機器人之定位、導航等。
    This paper provides a sensor fusion approach to improve the accuracy in building an occupancy map based on an established ultrasonic sensor model.
    We first construct a sensor model for the ultrasonic range finders mounted on the Pioneer P3-DX mobile robot by experimental test and mathematical reasoning. Based on the sensor model established, a probability can be assigned to each cell of the grid map that represents the possibility of obstacles.
    Second, by using sensor fusion technique, like Dempster-Shafer theory, probabilities of the cells can be combined to derive a new probability for representing the cell. As mobile robot moves, the probability of cell will be updated continuously. Finally, a complete occupancy grid map for the unknown environment can be established for use in navigation of the autonomous robot.
    显示于类别:[電機工程學系暨研究所] 學位論文

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