• The Journal of the Korea Contents Association
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• v.20 no.6
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• pp.415-424
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• 2020

Recently, the elevator industry in Korea has been divided into the high speed elevator market and medium-low speed elevator market, and SMEs are making rapid progress in the medium-low speed fields. Usually, since the elevator manufacturer receives an order for installation after the construction of the building structure, it is necessary to promptly create a optimal elevator model and layout drawing in an earlier stage of sales activity due to the limited time to elevator installation. This study analyzes the sale and design works of the elevator SMEs, examines the areas that can be efficiently improved, and integrates the preceding our studies from the viewpoint of efficiency improvements at sales and design business process in the elevator industry. After that, we proposed an integrated framework of sales and design process for the elevator SMEs industry, and developed a prototype software system for automating the creation of optimal elevator model, layout drawing of elevator and BOM(Bill Of Material) list.

• NEWSLETTER 전기공업
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• no.93-4 s.77
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• pp.1-20
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• 1993

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2005.04a
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• pp.173-178
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• 2005

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.28 no.4
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• pp.47-54
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• 2014

• Journal of Korean Society of Industrial and Systems Engineering
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• v.45 no.4
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• pp.70-78
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• 2022

Recently, elevator inspection and self-examination were strengthened through the revision of the Elevator Safety Management Act, but there have been no significant reduction in serious accidents and major failures. Therefore, the government intends to lay the foundation for reflecting the safety quality rating system, which adjusts the elevator inspection cycle, as a policy to induce safety management of preemptive and active management entities. This study systematically reviewed and classified the safety quality rating system for elevator inspection cycle adjustment in previous studies, collected expert opinions, and reconstructed the key items into realistic evaluation items, and evaluated and scored the relative importance of each factor through the AHP technique.

• Journal of Industrial Convergence
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• v.19 no.6
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• pp.67-72
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• 2021

The elevator installed in the building consists of an elevator call button and an input button for selection to the target floor. The elevator button is input only when the elevator user directly presses it. Such passenger input can be infected with an infectious disease due to contamination of the button. A non-contact button is required as a means for solving this problem, which detects the proximity of an object by applying a capacitive method. It implements a function of measuring the body's body temperature by attaching an infrared heat sensor, and provides a sterilization function of a button by attaching a UV-LED. A button was selected, a body temperature was measured through an infrared temperature measurement sensor, and UV-LED was turned on and sterilized when there was no user. The contactless elevator button is expected to be effective in preventing infectious diseases as it can prevent infection of viruses carrying infectious diseases and can detect body temperature to select positive patients of CIVID 19.

• Journal of the Korean Society of Industry Convergence
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• v.25 no.6_2
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• pp.1071-1081
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• 2022

As the demand for high-rise buildings increases, the demand for high-speed elevators is also increasing. In order to make a high-speed elevator, a method is needed to reduce the weight of the elevator's components, which is a constraint on the increase in speed. As a measure to reduce the weight, it is possible to remove the traveling cable for power and signal supply. Since the weight of the traveling cable varies depending on the position of the carriage, it is difficult to compensate the weight using the counter weight. The power supply is a structure in which a brush-rail type power input terminal is installed in the elevator hoistway to receive power in a contact-type manner while the carriage is moving. If a small-capacity ESS is installed in a passenger car, power can be supplied uninterruptedly inside the passenger car. A small-capacity ESS charging system to be applied to such an elevator system is required to perform several functions. First, the passenger Car must be able to charge as much as possible even during high-speed operation. A control algorithm with high responsiveness is required because charging starts and ends repeatedly by the partially installed input power stage. In addition, if the input-side line impedance is large due to the structure of the system and the response characteristic is increased, the stability of the system may be lowered. Accordingly, in this paper, we propose a control algorithm that has a stable steady-state output while having a fast response in a transient state. To verify the proposed control algorithm, simulation was conducted using PSIM, and the performance of the controller was verified by manufacturing a prototype buck conveter charger.

• The Safety technology
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• no.196
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• pp.16-17
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• 2014

우리나라 안전 역사를 이끌어가고 있는 주역이자 기계안전분야의 최고 권위자 중 하나인 이근오 서울과학기술대학교 교수가 최근 새로운 도전을 시작했다. 국내 안전 관련 학술단체의 대표라 할 수 있는 한국안전학회의 15대 회장에 선출된 것이다. 이근오 신임 회장은 행정안전부 승강기 사고조사 판정위원회 초대위원장, 노사정위원회 산업재해예방시스템 선진화위원회 위원, 서울시 안전감사 옴부즈만, 한국가스안전공사 사고조사위원회 위원 등 그간 정부와 기업, 지자체를 넘나들며 안전 분야의 성장과 발전을 주도해왔다. 또한 30여 년간 강단에서 예비 안전인들을 육성하는 데에도 헌신해왔다. 이런 큰 발자취를 남긴 그가 이제는 안전분야 학자와 지식인들을 하나로 모으기 위해 본격적인 움직임에 나섰다. 이에 따라 안전학회의 향후 행보에 각계의 시선이 집중되고 있다. 이근오 회장을 만나 앞으로의 계획과 그만의 안전칠학에 대해 이야기를 나누어 봤다.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.46 no.4
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• pp.133-141
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• 2023

Approximately 40,000 elevators are installed every year in Korea, and they are used as a convenient means of transportation in daily life. However, the continuous increase in elevators has a social problem of increased safety accidents behind the functional aspect of convenience. There is an emerging need to induce preemptive and active elevator safety management by elevator management entities by strengthening the management of poorly managed elevators. Therefore, this study examines domestic research cases related to the evaluation items of the elevator safety quality rating system conducted in previous studies, and develops a statistical model that can examine the effect of elevator maintenance quality as a result of the safety management of the elevator management entity. We review two types: odds ratio analysis and logistic regression analysis models.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.397-400
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• 2002

The purpose of this study is to analyze current status and propose improvement scheme of safety management on the heavy construction equipment operation. The research method invloves interview and questionnaire survey for the analysis of practical use status of heavy construction equipment. The results of this study are as fallows: 1) The problem of safety management status on heavy construction equipment operation is surveyed not wearing safety helmet, not keeping work regulations, and not preparing the work before start. 2) Proposed improvement scheme of safety management on heavy construction equipment operation includes strengthening 5 minutes safety education before start, strengthening safety action against falling materials, and strengthening enough preparation before start.