Applying Positioning Techniques for Exhibition: A Case Study in Thailand

Most indoor positioning systems are based on wireless communication. The distance between the pairs of tags and the anchor is crucial for calculating the tag's position. The BLE (Bluetooth Low Energy) estimated the distance from the received signal strength, while the UWB (Ultra-Wide Band) estimated the distance from the propagation delay. Although the signal strength in BLE has more easily interfered in comparison with the propagation delay in UWB, the BLE tag is smaller, cheaper, and easier to carry. In this paper, we focused on implementing positioning techniques to track visitors’ location while browsing the exhibition hall. The BLE is chosen for this paper based on economic scalability. Moreover, the installation time of anchors to the building remains a significant obstacle due to the limited time of preparing the venue. This obstacle includes the process of distributing tags to visitors and bringing them back. We have implemented our system on 6,000-20,000 square meters, with 20-25 meters high as a studied case. System installation costs and tracking results had been discussed in this paper.