PDF(Pubmed)
Abstract：
In order to reduce the accident risk in road construction and maintenance, this paper proposes a novel solution for road-worker safety based on an untethered real-time locating system (RTLS). This system tracks the location of workers in real time using ultra-wideband (UWB) technology and indicates if they are in a predefined danger zone or not, where the predefined safe zone is delimited by safety cones. Unlike previous works that focus on road-worker safety by detecting vehicles that enter into the working zone, our proposal solves the problem of distracted workers leaving the safe zone. This paper presents a simple-to-deploy safety system. Our UWB anchors do not need any cables for powering, synchronisation, or data transfer. The anchors are placed inside safety cones, which are already available in construction sites. Finally, there is no need to manually measure the positions of anchors and introduce them to the system thanks to a novel self-positioning approach. Our proposal, apart from automatically estimating the anchors\' positions, also defines the limits of safe and danger zones. These features notably reduce the deployment time of the proposed safety system. Moreover, measurements show that all the proposed simplifications are obtained with an accuracy of 97%.
摘要：
为了降低公路施工和养护中的事故风险,本文提出了一种基于无绳实时定位系统（RTLS）的道路工人安全的新解决方案。该系统使用超宽带（UWB）技术实时跟踪工人的位置，并指示他们是否处于预定义的危险区域，其中预定义的安全区域由安全锥界定。与以前通过检测进入工作区的车辆来关注道路工人安全的工作不同，我们的建议解决了分心工人离开安全区的问题。本文介绍了一种易于部署的安全系统。我们的UWB锚不需要任何电缆供电，同步,或数据传输。锚放在安全锥里面,这些已经在建筑工地上可用。最后,由于一种新颖的自定位方法，无需手动测量锚点的位置并将其引入系统。我们的提议,除了自动估计锚的位置，还定义了安全和危险区域的界限。这些特征显著地减少了所提出的安全系统的部署时间。此外，测量表明，所有建议的简化都以97%的精度获得。
