3D Indoor Activity Monitoring Navigation Viewer

A decentralized architecture of indoor location tracking system and its intuitive 3D activity monitoring viewer - 3D Navigation Viewer (3DNV) were developed. This paper concentrates on the integration of indoor location tracking system with virtual reality modeling language (VRML) to facilitate the indication of user´s spatial information in virtual indoor environments, synchronized with physical world. The developed indoor location tracking system employs beacons as active transmitters and a listener as passive receiver which carried by users. Distance information between RF and Ultrasonic signals is exploited to determine user´s physical location that essential in supporting third parties like doctors and caregivers to identify the activities and status of a particular individual through 3DNV. 3DNV serves as an unified user interface for indoor location tracking system, showing viewpoint and position of the target in the virtual indoor environments. It was implemented using VRML to provide a better visualization of target´s spatial information.