• International journal of advanced smart convergence
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• 제12권1호
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• pp.208-219
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• 2023

Recently, as mega-urbanization progresses, urban logistics centered on large cities is growing rapidly, and logistics transportation is increasing due to the lack of logistics infrastructure and the operation of a delivery system using cargo trucks in the city center. being cited as a cause. In order to solve this problem, domestic researchers are conducting research on the development of " Urban Underground railway Logistics System" that minimizes the initial infrastructure construction cost by utilizing the existing urban railway facilities in the city. Therefore, this paper analyzed the usage environment of the actual urban railway station to which the system will be applied in order to derive candidates for the test bed selection of "Urban Underground railway Logistics System". The evaluation criteria for test bed candidate role selection were established, and the candidate group derived from the Brown & Gibson model was used to evaluate the candidate group and derive the candidate role. A review of the results was conducted to contribute to the establishment of a test bed for the " Urban Underground railway Logistics System" under development.

• 시스템엔지니어링학술지
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• 제20권spc1호
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• pp.65-75
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• 2024

As the demand for logistics services increases rapidly in modern society, the existing freight delivery system through road transportation is caused various problems such as traffic congestion and greenhouse gas emissions. To solve that, the development of an 'underground logistics tunnel-based cargo transportation system' is currently being considered in Korea. In order to build a new concept stable and safe logistics system, derive system design requirements and functional specifications, and reflect them at the development of target system. In this study, to make foundation for development of an "underground logistics tunnel-based cargo transportation system," define system components through analysis from a hierarchical perspective, and the functions of each component were analyzed and defined. We identified what interfaces the components have at each stage of the operating process. Lastly, we defined a detailed operation scenario based on the previously derived results, deriving target system functional requirements.

• 사물인터넷융복합논문지
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• 제10권6호
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• pp.151-165
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• 2024

지하 물류 네트워크 설계는 도시 지하 물류 시스템에서 중요한 단계로, 물류 효율을 높이고 운영 비용을 절감하기 위해 최적의 물류 네트워크 경로를 찾는 것을 목표로 한다. 그러나 지하 환경의 복잡성과 불확실성으로 인해 전통적인 설계 방법은 이를 효과적으로 해결하기 어려운 경우가 많다. 본 논문에서는 화이트 샤크 최적화 알고리즘(WSO)을 기반으로 한 개선된 화이트 샤크 최적화 알고리즘(LGWSO)을 제안하여 지하 물류 네트워크 경로를 설계했다. 제안된 방법은 먼저 지하 공간 모델을 구축한 후, LGWSO 알고리즘을 이용해 경로를 계획한다. 혼돈 초기화 방법과 가우스 변이 전략을 채택하여 알고리즘의 성능을 효과적으로 향상시켰다. 시뮬레이션 실험을 통해 제안된 알고리즘은 최적화 정확도, 수렴 속도 및 강건성 측면에서 뛰어난 성능을 보이는 것으로 검증되었다. 전통적인 설계 방법과 비교할 때, 본 방법은 복잡한 지하 환경에 더 적합하며 도시 물류 시스템의 지하 네트워크 설계에 최적화된 솔루션을 제공한다.

• International journal of advanced smart convergence
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• 제12권1호
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• pp.220-229
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• 2023

The development of logistics technology due to the 4th Industrial Revolution and logistics 4.0 has changed the logistics environment from offline to online, and the growth of the online market has accelerated due to the recent increase in non-face-to-face delivery due to COVID-19. Such growth in the online market has expanded the logistics market for delivery, and contributes to creating an advanced logistics ecosystem as last mile services and logistics technologies begin to grow together. As traffic and environmental problems arise as a result, interest in transportation means of cargo increases, and changes to cargo electric vehicles and delivery cycles are being considered. However, since mass transportation of transportation focused on terminal delivery such as cargo electric vehicles and delivery cycles is limited in handling large quantities in urban areas, methods for efficiently transporting cargo while considering the environment are being devised. In order to solve such environmental problems and increase the efficiency of logistics delivery in urban areas, technologies using underground spaces based on existing urban railroads are being developed. In this study, a study was conducted on the establishment of evaluation criteria for selecting a test bed, which is a space for applying the system.

• 시스템엔지니어링학술지
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• 제17권2호
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• pp.122-128
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• 2021

Despite various economic crises, the domestic parcel delivery market handled 3.37 billion parcels in 2020 while maintaining annual growth due to the activation of e-commerce. In particular, in the case of the metropolitan area, which accounts for about 70% of the nation's parcel throughput, the increase in parcel delivery volume is directly related to the increase in freight vehicles in central area of Seoul,. And it leads to an increase of unnecessary social and environmental costs such as traffic congestion, road damage, and environmental pollution in the city. Therefore, in this paper we proposed the underground urban logistics system utilizing the existing urban rail infrastructure, and establish a conceptual design by operational scenario. In order to establish conceptual design of underground urban logistics system, we use order picking system process, which is use in warehouse, produce result combined ISO/IEC 26702. The results of this study can be usefully used before the underground urban logistics system is introduced.

• 대한안전경영과학회지
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• 제24권1호
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• pp.1-9
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• 2022

The growth of the online market is accelerating due to the development of technology and the pandemic era. The delivery service through the courier must be used to deliver the ordered goods to the customer through the online market. With the growth of the online market, the logistics market for delivery is also growing. The traffic and environmental problems are emerging as social issues. Urban logistics technology using underground space based on the urban railway developed to improve logistics efficiency in a metropolitan area and a new alternative to environmental problems. This study proposed a plan to secure system safety through safety analysis based on operational concept definition and scenario analysis by applying model-based perspective analysis to the system under development.

• 인터넷정보학회논문지
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• 제23권3호
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• pp.137-145
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• 2022

지하형 탄약고에 보관된 탄약의 물류는 저장공간의 특성상 지상에 보관된 탄약의 물류 보다 더 많은 어려움을 내포하고 있어, 이러한 문제점을 해결하여 지하형 탄약고의 물류를 향상 시키고자 본 연구를 실시하였다. 그래서 물류 개선을 위한 항목으로 경계, 안전, 환경, 물류체계, 장비설비, 수명관리 등 6개를 선정하였다. 그리고 AHP 기법으로 전문가들의 설문을 받아서 Expert Choice 프로그램으로 분석하였다. 분석 결과 안전, 경계, 수명관리, 장비설비, 물류체계, 환경 순으로 중요도가 높음을 확인하였다. 선정된 항목과 설문 결과를 토대로 지하형 탄약고에서 물류를 향상 시킬 수 있는 네트워크 기반 통합 플랫폼 구축 방안을 제시하였다. 본 연구는 향후 지하형 탄약고를 신축할 때 통합 플랫폼 구축을 위한 근거자료로 활용될 것이다. 본 연구는 군의 다른 물자를 저장하는 저장시설과 민간 기업의 대형 저장시설에서도 적용이 가능할 것으로 기대된다.

• International Journal of Internet, Broadcasting and Communication
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• 제13권4호
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• pp.112-120
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• 2021

Recently, the number of consumers using digital online distribution platforms is increasing. This caused the rapid growth of the e-commerce market and increased delivery volume in urban areas. The logistics system, designed ar006Fund the city center to handle the delivery volume, operates a delivery system from the outskirts of the city to the urban area using cargo trucks. This maintains an ecosystem of high-cost and inefficient structures that increase social costs such as road traffic congestion and environmental problems. To solve this problem, research is being conducted worldwide to establish a high-efficiency urban joint logistics system using urban railway facilities and underground space infrastructure existing in existing cities. The joint logistics system begins with linking unmanned delivery automation services that link terminal delivery such as cargo classification and stacking, infrastructure construction that performs cargo transfer function by separating from passengers such as using cargo platform. To this end, it is necessary to apply the device to the vertical and horizontal transportation machine supporting the vertical transfer in the flat space of the joint logistics terminal, which is the base technology for transporting cargo using the transfer robot to the destination designated as a freight-only urban railway vehicle. Therefore, this paper aims to derive holistic viewpoints needs for design requirements for vertical and vertical transportation machines and freight transportation standard containers, which are underground railway logistics transport devices to be constructed by urban logistics ecosystem changes.

• 대한안전경영과학회지
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• 제25권3호
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• pp.45-53
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• 2023

In order to solve the rapidly increasing domestic delivery volume and various problems in the recent metropolitan area, domestic researchers are conducting research on the development of "Urban Logistics System Using Underground Space" using existing urban railway facilities in the city. Safety analysis and scenario analysis should be performed for the safe system design of the new concept logistics system, but the scenario analysis techniques performed in previous studies so far do not have standards and are defined differently depending on the domain, subject, or purpose. In addition, it is necessary to improve the difficulty of clearly defining the control structure and the omission of UCA in the existing STPA safety analysis. In this study, an improved scenario table is proposed for the AGV horizontal transport device, which is a key equipment of an urban logistics system using underground space, and a process model is proposed by linking systematic STPA safety analysis and scenario analysis, and UCA and Control Structure Guidelines are provided to create a safety analysis.

• 산업경영시스템학회지
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• 제43권3호
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• pp.77-86
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• 2020

In this study, to improve the logistics flow of existing given chemical logistics warehouse, four logistics flow alternatives were proposed to minimize truck interference by building simulation model. The simulation model for chemical storage warehouse was built to evaluate system performance. Among the four new improved alternatives based on the basic model, the model with the same truck's pathways and locations of facilities identified an increase in the number of interferences but a decrease in daily working hours as the number of resources in a particular facility increases. Therefore, the three groups were classified as 'efficiency', 'complementary', and 'safety' based on the daily working hours, and the ratio of trucks entering two types of logistics warehouse was set in consideration of future market fluctuations. For each of the six types, the optimal number of resources was selected as the number of resources in the facilities with the least number of interferences in the basic model and the evaluation measures and characteristics set in this study were compared and analyzed. As a result, the Alternative 4 model operating the underground roadway produced interference between 17.0% and 36.4% of the basic model, with 113.3% of the interior loadspace.