• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.1
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• pp.169-175
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• 2016

Geofence is a virtual perimeter for a real-world geographical area, which could be statically or dynamically established the specified area if necessary. Many geofencing applications incorporate 2D(two-dimensional) map such as the Google map, allowing administrators to define boundaries on top of a satellite view of a specific geographical area. But these applications do not provide 3D(three-dimensional) spatial information as well as 2D location information no matter where indoor or outdoor. Therefore we propose a mechanism to identify indoor or outdoor location for 3D geofence, and implement 3D geofence using smartphone. The proposed mechanism identifies the position information on 3D geofence regardless of indoor or outdoor, inter-floor with only GPS and WiFi. In the near future, 3D geofence as well as LBS are promising applications that become possible when IoT can become organized and connected by location.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.1
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• pp.177-182
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• 2016

Geofence is a generic concept for describing geographic aspects of PoI(Point of Interest) enabling users to proactively induce context-based actions. However there is no need to maintain continuity when you reflect geofence in case of temporary events, accidents and isolation. Therefore we propose a geofence platform so-called TemG by adding time-limited information to support PoI. The proposed geofence platform TemG ensures the persistency and continuity of geofence. Furthermore, the proposed TemG can not only provide to automatically activate or deactivate the specified geofence during a period of timestamp but also support to the basic context-aware service knowing in/out in the zone. In the near future, the proposed TemG will be need to extend HPS(Hybrid Positioning System) for IoT(Internet of Things).

• Journal of Advanced Navigation Technology
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• v.24 no.6
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• pp.508-514
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• 2020

Geofence defines the area that UAS should not enter or exit to ensure the safety of their operations, and is considered as one of critical capabilities of the UTM (UAS traffic management) system. In this study, a geofence simplification method using modified perpendicular algorithm is proposed. The performances of the proposed geofence simplification method were evaluated with actual building data, and the evaluation results confirmed that the number of vertices can be effectively reduced while minimizing the spatial size of the geofence.

• Smart Media Journal
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• v.6 no.3
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• pp.89-94
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• 2017

The existing geofences provide only context-awareness service for entering or leaving the set region when a user sets a virtual region for his/her PoI(Point of Interest). Applying the mobile-geofence technology to the connected car technology, which is attracting attention as a next generation technology, it is possible to provide application service without additional infrastructure construction cost However, to do this, we need to expand and improve the functions of traditional geofence. In this paper, we propose and implement a flexible mobile-geofence in which the radii of each geofence applied to vehicles is changed according to context-aware in order to support connected cars technology based on the previously studied mobile three-dimensional geofence system. The proposed flexible mobile-geofence shows experimentally that the region of the geofence is changed according to context-aware of itself and its surroundings after applying a flexible decision algorithm by the flexible factor analysis. In the future, we are expected that the flexible mobile-geofence proposed in this paper will be applied not only to connected-cars technology but also to the application technology of V2X(Vehicle to Everything) for safe and efficient vehicle operation.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.1
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• pp.85-93
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• 2022

This paper contains the design and implementation results of a package tour management application using a Geofence technology as well as the performance evaluation. This application ables the tour guide to monitor the tourist movement in real-time whether the tourists are inside the virtual polygonal Geofence set by the tour guide. Even when the tour is moving between travel destinations, a virtual circular Geofence can be set by the tour guide to monitoring the tourist movement while on the move. The application includes tour guide's and tourist's locations, schedule and participant management. To evaluate the performance, average response time and accuracy is measured, resulting in satisfactory performance. The average response time ranged from 0.0047 seconds to 7.3 seconds in various cases and for accuracy, it scored 100% in various cases. It is expected that implementing Geofence technology to package tour management applications will help tour guides to perform more productive package tours by reducing the burden of managing tourists.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.91-93
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• 2021

This paper proposes an architecture to develop a mobile package tour application using geofence technology to increase tourism management effectiveness and efficiency. The proposed application allows the tour guide to set a virtual fence on a map with a certain radius dynamically as the virtual boundary to keep tourists inside both when visiting a place or when the tour is moving. The virtual fences are set up for allowing the tour guide to monitoring the tourist's movement by sending a warning to the tourist to get back inside the fence and a notification for the tour guide. If this geofence technology is applied to the package tour application, the tour guide will able to manage the package tour easily and conveniently.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.05a
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• pp.381-382
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• 2023

Frequent accidents occur when workers at construction sites leave the safety zone, and particularly in the past 5 years, 9 fatal accidents occurred at the Korea Railroad Corporation due to train accidents on other tracks during track work. With the Severe Accident Punishment Act taking effect in January 2022, it is a priority to secure a safe work environment for workers at industrial (construction) sites. Therefore, there is a need to manage workers' departure from the safety zone (construction zone) and to facilitate communication within the construction zone. In this study, a mobile edge computing CCTV system is proposed that uses geofencing to determine whether workers are working in the danger zone, which can judge and respond in real-time to the ever-changing field environment. The proposed system is mobile and flexible, rather than server-based fixed CCTV. However, since it is designed mainly based on images, it has limitations in recognition rate depending on the environment such as distance, viewing angle, and illumination. As a way to compensate for this, it is required to develop more reliable equipment by combining technologies such as LiDAR and Radar.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.291-292
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• 2023

반려동물을 입양하는 가구수는 매년 증가하고 있고 반려인과 반려동물들의 길거리 치안은 위협받고 있다. 이에 따라 본 논문에서는 반려인이 반려동물과 함께 안전한 외출을 할 수 있도록 '반려동물과 함께하는 안심산책 지도' 애플리케이션을 제안한다. 본 연구의 애플리케이션은 Geofence API를 사용해 안심등급을 산출하여 반려인들과 반려동물을 보다 안전한 환경에 있도록 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.403-406
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• 2017

지오펜스와 하이브리드 비콘을 이용한 입원환자 출입관리시스템은 모바일 앱, 관리자는 웹 화면을 이용해 입원 환자들의 병원 출입을 관리하는 시스템이다. 기존의 외출 시스템은 환자가 외출 신청서를 수기로 작성하고 주치의의 허락 하에 외출하는 형태이지만, 신청서 작성 과정을 거치지 않고 무단으로 외출하는 환자의 경우 외출 시점이나 현재 위치 등을 파악하기 어려운 문제가 있다. 무단 외출 환자를 즉각적으로 파악하지 못하는 경우 해당 환자들이 음주 또는 귀원하지 않는 등의 사고의 원인이 되는 문제가 발생할 수 있다. 본 논문에서는 지오펜스와 하이브리드 비콘을 이용해 환자들의 병원 출입 유무의 정확성을 높이고 무단 외출 환자를 즉각적으로 파악하는 방안을 제시한다.

• Journal of Digital Convergence
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• v.12 no.8
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• pp.211-217
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• 2014

In this paper, by using geofencing technology to set the area you want to move tourists. Geofence set of tourists in the region enters the smartphone by sending e-mail or SMS alarm to display a detailed map of the area to visit assistance. When you arrive at the destination of the museum exhibits or exhibits to the NFC tag attached to each corresponding to a web server for a detailed description of the exhibits from the get-down. Multimedia content using an existing exhibits described. Media of exhibition space and the interaction between the visitors tour guide system capable was built.