Ubiquitous location tracking for context-specific information delivery on construction sites

Behzadan, Amir H.; Aziz, Zeeshan; Anumba, Chimay J.; Kamat, Vineet R.

doi:10.1016/j.autcon.2008.02.002

Cited by 138 publications

(55 citation statements)

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“…StreamSpin uses a combination of WLAN and GPS to determine the position. Another system that makes use of both GPS and WLAN for tracking indoor and outdoor position of individuals working in a construction site is described by Behzadan et al [2]. The distinctive feature of this system is that it aims to enhance the positioning of an individual by providing data about his present head orientation.…”

Section: Combination Of Wlan Gps Cellular and Bluetooth Positioningmentioning

confidence: 99%

Context aware handover algorithms for mobile positioning systems

Khan

Silvadorai²,

Tan

et al. 2014

csci

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This work proposes context aware handover algorithms for mobile positioning systems. The algorithms perform handover among positioning systems based on important contextual factors related to position determination with efficient use of battery. The proposed solution is implemented in the form of an Android application named Locate@nav6. The performance of the proposed solution was tested in selected experimental areas. The handover performance was compared with other existing location applications. The proposed solution performed correct handover among positioning systems in 95 percent of cases studied while two other applications performed correct handover in only 50 percent of cases studied. Battery usage of the proposed solution is less than one third of the battery usage of two other applications. The analysis of the positioning error of the applications demonstrated that, the proposed solution is able to reduce positioning error indirectly by handing over the task of positioning to an appropriate positioning system. This kept the average error of positioning below 42.1 meters for Locate@nav6 while the average error for two other applications namely Google Latitude and Malaysia maps was between 92.7 and 171.13 meters.Keywords handover among mobile positioning systems, power efficient mobile positioning, switching between indoor and outdoor positioning systemsComputer Science • 15 (2) 2014 http://dx

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Section: Combination Of Wlan Gps Cellular and Bluetooth Positioningmentioning

confidence: 99%

Context aware handover algorithms for mobile positioning systems

Khan

Silvadorai²,

Tan

et al. 2014

csci

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“…The advantages of using augmented reality system on Architectural, Engineering, Construction (AEC) application has been extensively studied by many researchers (e.g., Behzadan and Kamat 2007;Behzadan et al 2008;Chi et al 2013;Dunston et al 2003;Golparvar-Fard 2009a, 2009bHammad et al 2009;Hou and Wang 2010;Kuula et al 2012;Schall et al 2009;Wang 2008;Wang and Dunston 2006;Woodward et al 2010;Yeh et al 2012). They have shown that augmented reality indeed improve physical task performance and can reduce mental workload of engineers for AEC tasks (Wang and Dunston 2006).…”

Section: Related Workmentioning

confidence: 99%

“…To exploit these benefits, many research projects have focused on providing cyber-information to field personnel through mobile devices and/or augmented reality systems (e.g., Akula et al 2011;Anumba and Aziz 2006;Behzadan et al 2008;Shin and Dunston 2008;Hakkarainen et al 2008;Khoury and Kamat 2009;Irizarry et al 2012;Pasman and Woodward 2003). These works have primarily focused on using Global Positioning Systems (GPS), Wireless Local Area Networks (WLAN), or Indoor GPS for accurately positioning the user within congested construction environments.…”

Section: Related Workmentioning

confidence: 99%

High-precision vision-based mobile augmented reality system for context-aware architectural, engineering, construction and facility management (AEC/FM) applications

2013

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Background: Many context-aware techniques have been proposed to deliver cyber-information, such as project specifications or drawings, to on-site users by intelligently interpreting their environment. However, these techniques primarily rely on RF-based location tracking technologies (e.g., GPS or WLAN), which typically do not provide sufficient precision in congested construction sites or require additional hardware and custom mobile devices. Method: This paper presents a new vision-based mobile augmented reality system that allows field personnel to query and access 3D cyber-information on-site by using photographs taken from standard mobile devices. The system does not require any location tracking modules, external hardware attachments, and/or optical fiducial markers for localizing a user's position. Rather, the user's location and orientation are purely derived by comparing images from the user's mobile device to a 3D point cloud model generated from a set of pre-collected site photographs. Results:The experimental results show that 1) the underlying 3D reconstruction module of the system generates complete 3D point cloud models of target scene, and is up to 35 times faster than other state-of-the-art Structure-from-Motion (SfM) algorithms, 2) the localization time takes at most few seconds in actual construction site. Conclusion:The localization speed and empirical accuracy of the system provides the ability to use the system on real-world construction sites. Using an actual construction case study, the perceived benefits and limitations of the proposed method for on-site context-aware applications are discussed in detail.

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“…In addition, even the coordinator's continuous presence on the construction sites would not be sufficient in preventing accidents occurring on vast sites, as the coordinator is, in any case, incapable of performing ubiquitous control. This situation often leads to scarce application of health and safety requirements which could be the cause of dramatic accidents (Behzadan et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Design and First Development of an Automated Real‐time Safety Management System for Construction Sites

Giretti

Carbonari

Naticchia

et al. 2009

Journal of Civil Engineering and Management

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Abstract. This paper reports a feasibility study which addressed the development of a new, advanced system mainly devoted to automatic real-time health and safety management on construction sites. The preliminary analyses and experiments described in this paper concern two of the most important functionalities which must be included in the system's final release. The first functionality consists in real-time position-tracking of workers involved on construction sites and the second -in a software tool for the prevention of non-authorized access to dangerous zones. This research step is part of a vaster, ongoing research project, addressing the development of a new generation of advanced construction management systems which allow real-time monitoring and coordination of tasks, automatic health and safety management, on-site delivery of technical information and the capture of "as-built" documentation. This paper focuses mainly on the development of a reliable methodology for real-time monitoring of the position of both workers and equipment in outdoor construction sites by applying Ultra Wide Band (UWB) based technologies. This positioning system was then interfaced with a software tool which performs virtual fencing of pre-selected, dangerous areas. Guidelines for the design of the receivers' topology will be addressed and the results of measurements recorded on a typical medium-sized block of flats, during different phases of the construction progress will be summed up. Finally, the preliminary experimental results obtained by the virtual fencing application tool will be presented and used to plan future research objectives.

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Ubiquitous location tracking for context-specific information delivery on construction sites

Cited by 138 publications

References 1 publication

Context aware handover algorithms for mobile positioning systems

Context aware handover algorithms for mobile positioning systems

High-precision vision-based mobile augmented reality system for context-aware architectural, engineering, construction and facility management (AEC/FM) applications

Design and First Development of an Automated Real‐time Safety Management System for Construction Sites

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