• Journal of Korea Society of Industrial Information Systems
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• v.24 no.4
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• pp.29-36
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• 2019

We propose a smart parking space guiding system based on user preferences in a parking lot. This system guides each vehicle to the most suitable parking space in a parking lot to meet the user preferences such as the available parking spaces in the parking zones and the proximity to the destination by exploiting the traffic to each parking zone gathered at the sensors near each guiding display. For this purpose, this paper proposes the cost function for the optimal route guide based on the various user preferences. In addition, the paper reports the design and implementation results of an event based simulator to show the feasibility of the smart parking guidance system.

• Journal of Korean Society of Transportation
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• v.30 no.1
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• pp.85-101
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• 2012

Parking guidance and information systems have been introduced to response the inefficient and inconvenience use of parking facilities. While advanced countries have reached effective use of parking guidance information system, the Republic of Korea has yet suffered from the lack of full use of advanced technologies. This study proposes an algorithm designed for a systems utilizing the USN technologies. A field test was performed. The test results showed that information from the proposed system is much reliable when compared to the one from the existing.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.560-562
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• 2010

Nowdays, The LED Illumination system can achieve lower power consumption and has a longer life-time compared to the fluorescent lamp system. Visible Light Communication(VLC) is wireless optical communication to use visible light of LED. This paper designs the indoor navigation of Location-Based Service(LBS) using LED illumination. and the parking guidance system using VLC in the underground parking lot. We show the result of experimentation and confirm possibility of the parking guidance system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.1
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• pp.99-107
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• 2008

Recently route guiding system using GPS is spread widely. In the parking management system of complex mall, RFID is mainly used to control status of parking lots. However, in a case that a vehicle only with RFID tag enters into small market-populated district with service of parking lots, there is no parking route guiding system optimized with information of real tine status of parking lots and the system only with GPS can't provide a function of using real time status of parking lots. This paper proposes a location recognizing method of RFID tag object for parking control system to integrated several parking lots in the business district and database-linked route guiding system optimized for parking. The proposed location recognizing method makes the search of optimized parking route possible by abstracting decoding order of tag and antenna number and recognizing direction of tag linked with database. Ihe implemented system that is composed of RFID tag, reader, middleware, server, parking lot clients and mobile clients shows that the proposed method works well and it will be useful for integrated parking control system.

• Spatial Information Research
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• v.16 no.1
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• pp.65-77
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• 2008

There have been many studies and technologies that define a current location of a moving vehicle with GPS(Global Positioning System). However, the navigation system with GPS has troubles to search an optimized route considering data such as realtime parking status and road conditions. Moreover, the GPS systems show malfunction in the downtown with very tall buildings, underground parking lot and the inside of buildings. On the contrary, the RFID systems are able to reflect real-time status of parking lots and roads in the downtown. This paper proposes a system of guiding path for parking lots to consider real-time constraints based on RFID. The results obtained from the implemented system show smooth guiding of a new route after immediately sensoring the change of the information of parking lots and roads: if a parking lot that a vehicle is heading to is fully occupied, the system re-searches a new route for a neighbor parking lot and immediately transfers it to customer's mobile, and if the designated route is under construction, the system guides a detour path. The proposed method will be useful for advanced integrated parking control system.

• KIISE Transactions on Computing Practices
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• v.22 no.12
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• pp.654-662
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• 2016

With the advent of autonomous cars, we explored the problems which will soon arise while parking in car parks. These include structure of parking lot suitable for autonomous cars, finding the closest parking slot available, and navigation to the location. We provide an initial solution, wherein we use a central server and the graph of the parking lot to guide cars to the closest parking slots available. Our experiments have shown that the proposed method is effective for the controlled parking for self-driving cars.

• Annual Conference of KIPS
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• 2015.10a
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• pp.467-468
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• 2015

본 논문에서는 주차장의 주차 공간 정보와 블루투스 비콘 정보를 활용하여 IoT 기반 스마트 주차정보 시스템을 구현하였다. 주차장의 주차 센서는 주차 정보를 실시간으로 서버에게 전달하며 차량 운전자는 스마트폰 앱을 실행하고 주차장에 진입한다. 스마트폰은 그 주차장의 블루투스 비콘 신호를 이용하여 주차 위치를 자동으로 인식하며 주차하려는 층의 주차 정보를 한눈에 확인할 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.19-22
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• 2015

주차는 자동차를 이용하는 사람들의 편리한 이동을 위한 기반 행위에 포함되는 요소이다. 따라서 이러한 주차 문제를 해결하는 다양한 서비스가 존재하나, 이러한 서비스를 제공하는 시스템을 개발하기 위해서는 주차공간의 특성을 고려해야 하는 어려움이 있다. 본 연구에서는 카메라 모듈과 딥러닝 알고리즘을 기반으로 하는 이미지 센싱을 활용하여 기존 시스템의 주차 감지 센서부 구축의 문제점을 개선하며, 주차장 수요가 많은 '러쉬 타임'을 반영하여 주차공간을 안내하고 운전자를 유도하는 주차정보시스템을 개발한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.489-490
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• 2022

본 논문에서는 주차 공간에 배치된 센서들로부터 차량을 감지하고 이를 서버로 전송함으로써 클라이언트가 실시간적으로 주차 공간 정보 서비스를 받는 시스템을 구현하였다. 또한 이 시스템은 웹이나 앱을 통해 클라이언트가 쉽게 접근 가능하며, 직관적인 사용자 인터페이스(UI)로 쉽고 한눈에 알아볼 수 있도록 한다. 센서는 주차장 환경에 따라 구성과 배치 방법이 달라질 수 있으며, 핵심은 검증된 센서의 값이 서버 전송을 통하여 데이터를 가공하고, 이를 클라이언트에게 제공하는 것에 있다. 제안한 시스템으로 대형 주차장에서의 효율적인 주차 정보 서비스를 통해 주차시간 줄여주는 효과가 있을 것으로 기대된다.

• KIISE Transactions on Computing Practices
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• v.22 no.6
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• pp.268-277
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• 2016

IoT (Internet of Things) technologies have largely contributed to our smart living environment. The smart parking system is one of the prominent services that IoT supports. To identify the parked vehicles, the previous parking system use special identifying devices, the RFID tags carried by the users, and the high quality camera to recognize the vehicle license numbers. However, the previous methods cause cost inefficiency and unfriendly usages. To address these problems, we propose a smart parking system based on ultrasonic sensors and Bluetooth communication. The proposed system decides the available slots by using the sensor motes located in the parking spaces. Also it recognizes the location of the parked vehicle using Bluetooth RSSI between a Smartphone and the sensor motes. In addition, based on these converging technologies, it can support the parked routes of vehicles for users. To evaluate the implemented smart parking system, we applied the RSSI transform equations and the recognition rate for parked vehicles. As a result, the accurate rate of transformed distances could be measured.