This paper presents a near-real-time automated method for data acquisition and progress reporting of construction operations indoor. The developed method utilizes the joint use of low cost passive Radio Frequency Identification (RFID) tags, RFID mobile reader, tablet PC, project schedule and Building Information Modeling (BIM). RFID is used for indoor zone identification where GPS cannot technically be used. By integrating project schedule and BIM, a 4D model is generated to simulate a planned construction sequence. Visualization of zone activities, in near-real-time, via the planned 4D model is achieved through assigning a zone to the user from the received nearest RFID tag signals. Meanwhile, automated data acquisition from each zone will generate numerous data in formats such as images, notes and video clips, which is then compared to the planned 4D model to generate an automated progress report. This will enhance traditional progress reporting procedures and makes it more objective and less time consuming. The developed method is applied to a construction project in Montreal area to demonstrate its use.
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