• Annual Conference of KIPS
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• 2022.05a
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• pp.56-59
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• 2022

최근 인터넷 기반 서비스에서 사용되는 데이터가 개인화 및 맞춤화가 됨에 따라 사용자의 상황이나 요구사항에 따라 실시간 AI 추론 및 데이터 분석과 같이 데이터를 서비스 요청 즉시 처리해야 하는 실시간 서비스에 대한 요구사항이 증가하고 있다. 하지만, 기존 컨테이너 관리 시스템은 컨테이너의 데드라인 할당 및 관리 기능이 제공되지 않으며, 컨테이너 관리 시스템에서 GPU(Graphic Processing Unit) 작업의 실행과 같은 작업 상태를 알 수 없다. 본 논문에서는 컨테이너에서 실행되는 GPU 작업의 실시간 처리를 지원하기 위해 컨테이너에서 실행되는 GPU 작업의 시작 및 종료 상태의 추적과 데드라인 할당 기법을 위한 실시간 처리 정보 관리 기법을 제안한다.

• Annual Conference of KIPS
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• 2024.10a
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• pp.991-992
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• 2024

이 시스템은 UWB(Ultra Wide-Band) 기술을 활용한 실시간 컨테이너 추적 시스템을 제안한다. 본 시스템은 컨테이너의 위치를 실내 환경에서 정밀하게 모니터링하며, 온도와 습도와 같은 환경 데이터를 수집하고, 설정된 범위를 벗어나는 경우 즉시 알림을 제공한다. 이는 기존 GPS 기반 시스템의 실내 정확도 문제와 환경 요인 관리의 한계를 극복하기 위해 설계되었으며, 물류 프로세스의 효율성을 향상시키고 화물의 품질을 유지하는 데 중점을 둔다. 모든 데이터는 Firebase에 저장되어 모바일 애플리케이션을 통해 실시간 모니터링이 가능하다.

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.16 no.3 s.55
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• pp.26-32
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• 2005

RFID 기술은 사물에 전자 태그를 부착하여 무선으로 사물의 ID를 인식하여 정보를 수집하고 주변상황 정 보를 감지하고 수집 된 정보를 저 장, 가공, 추적함으로써 사물에 대한 측위, 원격처리, 관리 및 사물간 정보 교환 등의 서비스를 제공하는 기술이다. 특히,.미 관세청에서 2005년 미국에 수출되는 컨테이너에 RFID 태그를 부착하는 정책을 발표하여 2006년부터는 능동형 RFID 태그를 이용한 컨테이너 통관을 시행할 예정이며, 현재 태그 부착은 의무 사항은 아니지만 선별적으로 컨테이너 전수 검사를 실시한다는 방침이어서 반강제적인 성격을 지닌 것으로 판단할 수 있다. 또한, 물류 산업의 변화의 대세에 따라 제조업체의 생산품이 유통 과정을 거쳐 항만에서 처리되는 과정을 실시간으로 추적이 가능함은 물론이고 나아가서 외국 항만과의 연계를 통하여 수출입 전 과정의 추적성을 파악하고 거기에 다른 시스템의 효율적인 통합을 이루어 언제 어디서나 화물의 추적과 관리가 가능한 유비쿼터스 환경의 선진화된 항만 시스템을 구축할 수 있다. 본고에서는 항만 물류용 능동형 RFID 기술과 관련하여 시스템 구성 요소 및 관련 기술 동향, 항만 물류 시스템의 응용에 대해 알아본다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.22 no.4
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• pp.401-409
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• 2004

A monitoring system for container using CPS is the system for positioning and managing containers in real time. CPS is capable of positioning the container, promptly with a reasonable amount of accuracy. Facility managers of ports or airports should have loading, unloading, and keeping freight effectively. Transport companies or freight owners should allocate moving container properly and be able to prevent the loss or delay of freight. In this study, the position and pathways of container are monitored by real-time tracking method. The absolute and relative locations of container are monitored digitally and visually from TC_loading to TC_unloading yard. It has been tested the movement of the containers equiped with GPS, and its accuracy and efficiency were analyzed.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.3
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• pp.278-287
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• 2013

Modern information technologies continue to provide industries with new and improved methods. With the rapid development of Machine to Machine (M2M) communication, a smart container supply chain management is formed based on high performance sensors, computer vision, Global Positioning System (GPS) satellites, and Globle System for Mobile (GSM) communication. Existing supply chain management has limitation to real time container tracking. This paper focuses on the studies and implementation of real time container chain management with the development of the container identification system and automatic alert system for interrupts and for normal periodical alerts. The concept and methods of smart container modeling are introduced together with the structure explained prior to the implementation of smart container tracking alert system. Firstly, the paper introduces the container code identification and recognition algorithm implemented in visual studio 2010 with Opencv (computer vision library) and Tesseract (OCR engine) for real time operation. Secondly it discusses the current automatic alert system provided for real time container tracking and the limitations of those systems. Finally the paper summarizes the challenges and the possibilities for the future work for real time container tracking solutions with the ubiquitous mobile and satellite network together with the high performance sensors and computer vision. All of those components combine to provide an excellent delivery of supply chain management with outstanding operation and security.

• Information and Communications Magazine
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• v.27 no.11
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• pp.12-19
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• 2010

항만 내에서 선박 체류 시간을 단축시켜 선박의 운항 회전율 극대화 및 컨테이너 처리 현황 정보를 실시간으로 제공하는 동의 선사에 대한 서비스 제공은 항만 간의 경쟁에서 우위를 정하기 위해 매우 중요해지고 있다. 이러한 변화에 대응한 u-Port(또는 smart-Port)는 항만을 통하는 모든 수출입 물류에 대해 u-IT 기술을 기반으로 실시간 경로 추적 등이 가능한 항이다. RFID, RTLS 및 USN 기술을 통한 u-Port 구축 노력과 최근에는 스마트폰, GPS, WiFi, Wibro, 3G, 유무선 통합 등의 기술을 활용한 smart-Port 구축에 대해 논의되고 있다. 이들 첨단항만들은 물류 프로세스의 리드타임단축, 실시간 컨테이너 추적, 무인자동화 등을 가능하게 하여 항만의 시간적 경제적 효율성을 대폭 향상시킬 것이다.

• KIPS Transactions on Computer and Communication Systems
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• v.11 no.11
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• pp.381-394
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• 2022

Recently, due to the personalization and customization of data, Internet-based services have increased requirements for real-time processing, such as real-time AI inference and data analysis, which must be handled immediately according to the user's situation or requirement. Real-time tasks have a set deadline from the start of each task to the return of the results, and the guarantee of the deadline is directly linked to the quality of the services. However, traditional container systems are limited in operating real-time tasks because they do not provide the ability to allocate and manage deadlines for tasks executed in containers. In addition, tasks such as AI inference and data analysis basically utilize graphical processing units (GPU), which typically have performance impacts on each other because performance isolation is not provided between containers. And the resource usage of the node alone cannot determine the deadline guarantee rate of each container or whether to deploy a new real-time container. In this paper, we propose a monitoring technique for tracking and managing the execution status of deadlines and real-time GPU tasks in containers to support real-time processing of GPU tasks running on containers, and a node list management technique for container placement on appropriate nodes to ensure deadlines. Furthermore, we demonstrate from experiments that the proposed technique has a very small impact on the system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.3
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• pp.627-633
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• 2007

This paper describes position tracking system of a container trailer approaching to a gantry crane for loading or unloading a container into or from a ship, respectively. Proposed position tracking system informs the trailer driver of right position to stop the car under a gantry crane. To measure the location of a trailer, we used Cricket Mote modules which adopted RF and ultrasound technology. We present an elaborate method to improve position errors occurring at sensing and calculate three dimensional position by triangulation along with how to reduce location tracking interval for real-time monitoring. The location information was transmitted to a Personal Digital Assistant (PDA) periodically through Bluetooth communication for guidance of the trailer driver. In indoor and outdoor tests, position errors were less than 3 cm and location tracking interval was 0.5 second on average.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.11
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• pp.1531-1537
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• 2018

In maritime logistics, a large number of containers are transported to the destination through a port in the form of composite transportation such as ships, trucks, and railways. Logistics parties such as shipping companies and consignors prefer having the real-time information on the entry and exit of the logistics hubs of the freight. Particularly, a port is an important space that connects the maritime and inland areas. Hence, the interest about freight of the logistics party in port is high. This study describes tracking the location of freight by using GPS dynamically based on area type rather than point type. This presents dynamic information of location tracking when the freight enters, exits from, and passes through a certain port area. I suggest a real-time location of the container cargos tracking algorithm in port-entry, port-exit, and port inside using Active IP-RFID technology based on the location tracking algorithm of previous research.

• Journal of the Society of Naval Architects of Korea
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• v.36 no.2
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• pp.61-71
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• 1999

This paper resents a novel cargo system adapted for a sea port subjected to severe time-varying tide. The proposed system can perform loading or unloading by using a sort of hydraulic elevator associated with real-tim position control. As a preliminary phase, a small-sized model of the cargo system is designed and constructed. The model consists of three principal components ; container palette transfer(CPT) car, platform with lifting columns and cargo ship. The platform activated by the electro-rheological(ER) valve-cylinder is actively controlled to track the position of the cargo ship subjected to be varied due to the time-varying tide and wave motion. Following the derivation of the dynamic model for the platform and cargo ship motions, an appropriate control scheme incorporating time sequence and PID(proportional-integral-derivative) controller is formulated and implemented. Both the simulated and the measured control results are presented to demonstrate the effectiveness of the proposed cargo system.