UWB-assisted real-time localization in wireless sensor networks

Abstract

Abstract-A safety monitoring and accident warning system for underground construction site has been designed in our previous work based on wireless sensor network. Real-time localization of mobile targets is crucial for tracking the related incidents. However, the current RSSI-based localization approach struggles to achieve the required performance. This is due to the limited ranging accuracy of RSSI devices. In this paper, we investigate various ways of improving the localization accuracy and propose our solution of a hybrid UWB-assisted approach. We argue that a hybrid UWB-assisted RSSI ranging has the best overall performance for our application. We show with both mathematical analysis and demonstration system that, instead of implementing a full UWB network, our approach can improve the accuracy to our desired level with only a small number of additional UWB anchor nodes.

Infrastructureless UWB based collision avoidance system for the safety of construction workers

“…UWB communications have been used [3], [7], [8] to limit accidents at construction sites by identifying the distance between the worker and an imminent danger, such as approaching vehicles or other dangerous equipment. Research in UWB localisation for industrial applications [8], [9], [10] further support the use of UWB in such scenarios. Even though sufficient accuracy was achieved, existing solutions [3], [7] necessitate a fixed UWB infrastructure.…”