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IFC資料查詢機制之設計與實作

DESIGN AND IMPLEMENTATION OF IFC DATA QUERY MECHANISM

摘要


buildingSMART制訂了Industry Foundation Classes (IFC)標準資料模型,以利建築生命週期各階段BIM資訊交換與共享。IFC檔案格式以純文字方式描述工程各個維度的BIM資訊與其物件間之關係,雖能以簡單的文字編譯器進行查看及修改,但因IFC資料量龐大且複雜,以致IFC資訊有不易管理與存取之缺點。因此本研究選擇將IFC檔案格式轉換為BSON Document格式匯入文件導向式資料庫,利用資料庫管理功能以提升IFC資料管理效能。另外,本研究於匯入IFC資料時透過IFC資料減量模組,有效率地保留物件與物件之間關連性,將其資料量大幅減少,並開發基於IFC資料結構特性與物件間關係的查詢機制,主要分為Top-Down及Bottom-Up兩種查詢機制,以提供使用者能在資料庫中快速獲取所需資訊,避免過去資訊取得緩慢且可能出錯的問題。本研究並透過不同案例以亂數隨機查詢方式驗證查詢機制效益,證明其可提升IFC資料存取效率,並可快速的解析所需內容。

關鍵字

BIM IFC 文件導向式資料庫 索引 資料查詢

並列摘要


The buildingSMART has developed Industry Foundation Classes (IFC) that makes it possible to hold and exchange relevant data between different BIM applications during building life cycle. Due to IFC data describes the BIM objects and their relationship in plain text format, the data complexity and amount of IFC data are increasing. For this reason, this research converts IFC data into BSON Document and imports those data into the document-oriented database for raising the efficiency of IFC data management. This research imports IFC data into the document-oriented database and uses IFC Data Reduction Module at the same time, that can retains the IFC data structure, and reduce a lot of objects of IFC data. Moreover, this research designs and develops an efficient query mechanism based on IFC data structure and their relationship for assisting people in efficiently acquiring needed information, and avoids the trouble that because users get information slowly or wrongly.

並列關鍵字

BIM IFC document-oriented database index data query

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