工程在施工階段管理者必需即時掌握工程進度與現場安全，近年來無線感測定位技術於工程上之應用與日俱增，然而無線感測定位技術雖能即時反應工程現地的感測數據資料給管理者，但資料的呈現多屬報表化或平面地圖化，具體視覺化的程度較不足，使管理者較不易同時掌握現地的即時影像和數據。本研究提出基於三維模型元件庫之即時場景感測建立模式，模型元件庫將工程現地中可能出現之元素，如人員、機具、物料等的三維模型，均模組化預建於資料庫中，並將即時的感測定位記錄儲存於一現地感測定位資料庫中，再將營建三維模型元件庫與現地感測定位資料庫結合，達成三維感測場景之實現，此模式由於場景中的模型元件都是預建於資料庫中，故只要配合感測設備之定位資訊更新即可即時地視覺化反應工地的動態，並可結合多次的現地感測記錄為時間軸成為4D模式呈現施工過程，讓使用者可能在三維視覺化之環境下，直觀地掌控施工進度與了解人員、機具、物料等財產設備於工地的動態變化，維護工地安全。

In recent year, positional sensing technology has been applied in construction for real-time monitoring of elements, such as materials, equipments, and personals, in a construction site. However, the presentation of sensing data in most real-time monitoring systems is in the form of texts and numbers in table or map. In this way, it would be somewhat difficult to realize the corresponding situation and layout visually in site. This study proposed a mode to generate 3-dimensional (3D) model of a developing site based on real-time positioning data. A construction model component database is adopted to achieve efficiency in generating site model in the proposed mode. The model component database has pre-stored the models of all basic elements that could possibly exist in a construction site. On the other hand, a positional sensing database is established for accumulating positioning data of monitored elements collected by sensing units in site. By integrating these two databases, the generation of a 3D model automatically for simulating current layout of a construction site can be achieved. The proposed model can allow manager to intuitively track the progress of a construction as well as the real-time movements of all the monitored elements in site.

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