Centimeter Indoor Real-Time Location System

DOI: 10.14416/j.ind.tech.2022.12.003


  • Hathairat Ketmaneechairat Department of Information and Production Technology Management, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok
  • Banatus Soiraya IO MED TECHNOLOGIES Co., Ltd.


Real Time, Location System, Centimeter, Location, Receive Node


Centimeter-level real-time indoor location tracking system has been developed as a prototype of a real-time tracking system for indoor location tracking for tools, equipment, supplies, staff, and patients that have been taken outside the area or stolen with centimeter accuracy using the AOA (Angle of Arrival) and Bluetooth 5.1 technology. The system consists of part 1 hardware for use in the system and part 2 software system. The hardware part has a set of receivers (Receive Nodes) that must be installed to cover different areas or rooms in the building by considering the signal level to cover the searched area and the tags attached to the devices or the persons for transmitting the signal. The part of the software system consists of a section that displays a map (Map) for searching and a device management part (Administration). The results of the ten centimeter-scale real-time indoor location tracking systems tests were accurate to the centimeter scale and had an average deviation from the first test were approximately 67.1 centimeters and the second test were approximately 40.5 centimeters respectively, which were better than conventional Bluetooth signals with a deviation of 300-500 centimeters and is according to our research objectives.


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บทความวิจัย (Research article)