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Localization of RFID-equipped assets during the operation phase of facilities

机译：在设施运营阶段对配备RFID的资产进行本地化

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摘要

Indoor localization has gained importance as it has the potential to improve various processes related to the lifecycle management of facilities and to deliver personalized and location-based services (LBSs). Radio Frequency Identification (RFID) based systems, on the other hand, have been widely used in different applications in construction and maintenance. This paper investigates the usage of RFID technology for indoor localization of RFID equipped assets during the operation phase of facilities. The location-related data on RFID tags attached to assets are extracted from a Building Information Model (BIM) and can provide context-aware information inside the building which can improve Facilities Management (FM) processes. First, using the current location of the assets saved on the tags attached to fixed assets, an FM personnel is able to read tags from a distance and locate them on a floor plan. Fixed tags with known positions act as reference tags for RFID reader localization techniques. In this scenario, the user can also estimate his/her location by scanning the surrounding reference tags. Furthermore, the paper investigates an approach to locate moveable assets using received signals from available reference tags in the building based on pattern matching and clustering algorithms. As a result, a user equipped with an RFID reader is able to estimate his/her location, as well as the location of target assets, without having access to any Real-Time Location System (RTLS) infrastructure. Several case studies are used to demonstrate the feasibility of the proposed methods.
机译：室内本地化已变得越来越重要，因为它有可能改善与设施生命周期管理相关的各种流程，并提供个性化的基于位置的服务（LBS）。另一方面，基于射频识别（RFID）的系统已广泛用于建筑和维护的不同应用中。本文研究了RFID技术在设施运营阶段对配备RFID的资产进行室内定位的用途。从建筑物信息模型（BIM）中提取与资产相关的RFID标签上与位置有关的数据，并可以在建筑物内部提供上下文相关的信息，从而可以改善设施管理（FM）流程。首先，FM人员可以使用保存在固定资产标签上的资产的当前位置，从远处读取标签并将其定位在平面图上。具有已知位置的固定标签充当RFID阅读器定位技术的参考标签。在这种情况下，用户还可以通过扫描周围的参考标签来估计他/她的位置。此外，本文还研究了一种基于模式匹配和聚类算法，利用来自建筑物中可用参考标签的接收信号来定位可移动资产的方法。结果，配备了RFID阅读器的用户无需访问任何实时定位系统（RTLS）基础结构，就可以估算其位置以及目标资产的位置。几个案例研究被用来证明所提出的方法的可行性。

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