-Locating construction assets such as equipment and workforce during construction are critical for improving safety and productivity. The current indoor locating practices utilize real time locating system by alerting staffs when entering hazardous, high risk, or off-limits areas. This is a risk based study by means of probability analysis based on the distance of the worker from hazard. Not much attention has been given on communication especially on improving two-way communication between workers and supervisors in conjunction with tracking them in a 3D environment for forensic purposes and performance analysis. The aim of this study is to develop a Wi-Fi-based positioning and communicating system for indoor positioning with radio communication systems which is called the Voice Communication and Locating System (VCLS) and integrate it with other applications namely BIM and GIS. The BIM and GIS are used for displaying the positions of mobile devices for tracking the workers in a proposed area. The system development process includes determination of the functionalities of VCLS components and the interrelationships between them presenting a 3D environment. A series of experiments were carried out at a current facility at the University of NSW. The initial results of this ongoing study shows that VCLS has the capability to track the approximate locations of workers in 3D environment. The integration of VCLS and GIS is extremely valuable to construction users, because it increases the communication quality and efficiency of their interaction on construction site.
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