• Title/Summary/Keyword: Interlocking system

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The Numerical Analysis on the Behaviour of Combined Sheet Pile in the Reclaimed Ground Mixed by Sandy Soil and Clayey Soil (사질토와 점성토가 혼재하는 해안 매립지반에서 조합형 Sheet Pile의 거동에 관한 해석적 연구)

  • Kim, Byung-Il;Kim, Young-Sun;Han, Sang-Jae;Park, Eon-Sang
    • Journal of the Korean Geosynthetics Society
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    • v.19 no.3
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    • pp.9-21
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    • 2020
  • In this study, the design method of the combined sheet pile was considered in the coastal landfill where sandy and clayey soils are mixed, and the behavior in excavation was analyzed. It was confirmed from the elasto-plastic analysis that the predicted behavior of the temporary facilities of earth retaining differs according to the type of the combined sheet pile method (Built up, Interlocking, Welding) and the analysis method (soldier pile method, continuous wall method). In the case of sheet pile member force, the results of the continuous wall analysis method predicted the most conservative results. When the stress ratio (calculation/allowance) of each member was analyzed based on the maximum member force of the combined sheet pile method, the maximum value was obtained for bending moment in the side pile and combined stress in the case of the strut. As a result of finite element analysis, the member force of the side pile was the largest in the short-term effective stress analysis condition, while the compressive force of the strut was large in the consolidation analysis. When comparing the results of the elasto-plastic analysis and the finite element analysis, the shear force of the side pile and the axial force of the strut were greatly evaluated in the elasto-plastic analysis, and the bending moment of the side pile was the largest in the short-term effective stress condition of the finite element analysis. In addition, the displacement of the side pile was predicted to be greater in the finite element analysis than in the elasto-plastic analysis.

Development of Real time distributed Object Remote Monitroing system (실시간 분산객체 원격 모니터링 시스템의 개발)

  • Moon, Myung-Ho;Koo, Kyung-Wan
    • Journal of Advanced Navigation Technology
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    • v.13 no.1
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    • pp.79-86
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    • 2009
  • As information communication technology developed we could monitor temperature, weather, indoor and outdoor status which we need to monitor using various sensors. Even further we could monitor our body such as Sa02 and serologic chemical tests easily at home or office. It is possible though interlocking the house medical instrument with the wireless public data network. Data from sensors can be transmitted to the distant control room and will be essentially applied through wireless public data network. In this study we measured various sensor data for the telemetry in one system. The sensing items are mainly focused on the static and dynamic behaviors of the bridge, building, instruments. The study suggests the transmit system model utilized by the wireless public data network. The suggestion in the study of telemetry system provides movement and preservation. And it will exam various condition in distance or at home.

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AMOLED Aging Chamber Signal Generation and Heating System (AMOLED 에이징 챔버 신호 생성 및 가열 시스템)

  • Lee, Byungkwon;Cho, Kwanghee;Jung, Hoekyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.22 no.6
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    • pp.861-866
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    • 2018
  • In OLED (Organic Light-Emitting Diode) manufacturing, the aging process increases the manufacturing efficiency and measures the correction value to correct the aging. The correction value for correcting the aging of the OLED can be applied to the driving signal. The OLED aging process measures the current after outputting the light for a predetermined time according to the preset driving signal and temperature. In the OLED manufacturing process, aging is applied for non-uniformity by deposition and temperature. This time has little effect on OLED efficiency reduction. Heating devices and signal generation systems are required to create the conditions necessary for aging. The results measured by the heating system and signal generation system can be used as a basis for evaluating power requirements, uniformity and efficiency in OLED manufacturing. In this paper, we propose and implement a configuration for interlocking the driving signal generation and heating system for practical OLED aging correction.

Implementation of RFID based on the self-blood sugar measurement system (RFID기반의 자가 혈당측정 시스템의 구현)

  • Park, Tae-Jin;Lee, Jong-Hee
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.10
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    • pp.2079-2086
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    • 2011
  • Recently, technology of self diagnosis system which one of health-care has been research very active. With this, In this paper, we have to implement the self-blood sugar measurement system that is interlock with PC, RFID, and Bio-Signal glucose tester and accessible user interface. Therefore the equipments can performs accessible interface composition for communication between devices and PC, analysis and test of communication status of the RFID tag and reader that it easy to obtain the data of self-diagnosis linkage with PC, RFID, and Bio-Signal glucose tester. In other words, as result of communication protocol experiment with self-blood sugar measurement data, it has been showed to display a high-reliability result through year, month, and day, body temperature, and levels and check point of blood glucose.

Development of the Multi-stage System with 4 DOF (4자유도 모션이 가능한 복합 무대 시스템 개발)

  • Lee, Sang-Won;Won, Daehee;Lee, Sulhee
    • The Journal of the Korea Contents Association
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    • v.15 no.5
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    • pp.18-26
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    • 2015
  • In this paper, we presented a design and control method of multi-stage with wagon and lift stage. Multi-stage system has 4 degree-of-freedom(DOF), i.e., forward/backward/left/right/rotate and up/down motion. Wagon mechanism in the type of two wheel and steering is proposed in order to improve for the maneuverability compared to the existing differential-type wagons. Also, the lift mechanism is designed by interlocking type in order to make the maximum height bigger than 10 times of the original height. We also proposed a path planning algorithm. The performance of the propped system is validated via multi motion experiments, so that the multi-stage system is useful for various performances production.

Performance improvement of serial communication converter of train control computer (열차제어컴퓨터 시리얼통신변환장치(HADAX)의 성능개선에 관한 연구)

  • Cho, Bong-Kwan
    • Journal of The Korean Society For Urban Railway
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    • v.6 no.4
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    • pp.427-436
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    • 2018
  • HADAX is a serial communication converter of train control computer. It is connected with various signal equipments such as wayside signal equipments, station signal equipments, train control computers, and transmits control information and signal condition information for train control. And transmits information to several electronic interlocking devices through a splitter interface. Since HADAX interfaces with many signaling devices through serial communication, frequent communication connection faults necessitate improvement of performance such as dual system configuration, integration of external splitter, and multi-channelization of communication card. The improved HADAX device should have compatibility with the dimensions of existing enclosure and enclosure, and verify the performance of dual system and splitter integration. Therefore, we verified the performance of HADAX through the route control test, dual system test, and multi-channel communication test with splitter integrated connection by connecting with the existing signal equipment.

A study on the maturation of cardiomyocytes by continuous supply of culture media (세포 배양액의 연속 공급기 제작을 통한 심근세포의 성숙개선에 관한 연구)

  • Kwon, WooJin;Kim, Geun Woo;Jeong, Unseon;Kim, Jongyun;Lee, Dong-Weon
    • Journal of Sensor Science and Technology
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    • v.30 no.2
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    • pp.109-113
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    • 2021
  • In this study, an automated culture media replacement system was developed to analyze changes in the contraction characteristics of cardiomyocytes according to the state of the culture media. For the long-term storage of culture media, a Peltier refrigerator with a temperature of 5 to 8℃ was provided and a pH of 7.4 was maintained. The cell culture media of the cardiomyocytes was continuously replaced using interlocking pumps at a flow rate of 0.83 μl/h. The cardiomyocytes in which the culture media was replaced automatically demonstrated lower heartbeats per minute compared to samples in which there was no replacement. However, these cardiomyocytes moved more uniformly and produced greater displacement in one heartbeat cycle. It was observed that the sarcomere length of the cardiomyocytes increased due to the automated culture media replacement system. These cardiomyocytes were found to demonstrate better maturation compared to the control group. The maturation of cardiomyocytes was verified through staining images. The proposed automated culture media replacement system generates a uniform heart rate and improvements in contraction force. Based on the study, patient-specific drug toxicity assessments can be conducted using differentiated cardiomyocytes in induced pluripotent stem cells.

Blockchain-based safety MyData Service Model (블록체인 기반 안전한 마이데이터 서비스 모델)

  • Lee, Kwang Hyoung;Jung, Young Hoon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.12
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    • pp.873-879
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    • 2020
  • The importance of data as a core resource of the 4th industrial revolution is emerging, and companies illegally collect and use personal data. In the financial sector, active research is conducted to safely manage personal data and provide better services using blockchain, big data, and AI technology. In this paper, we propose a system that can safely manage personal data by using blockchain technology, which can be used without changing the existing system. The composition of this system consists of a blockchain, blockchain linkages, a service provider, and a user (i.e., an app). Blockchain can be used regardless of its type and form, and services are provided by classifying blockchains and services in the blockchain linkages. Service providers can access personal data only after requesting and receiving delegated permission from users. Existent MyData services store all data in a user's mobile phone, so information may get leaked due to jailbreaks or rooting. But in the proposed system, personal data are stored in blockchain so information leakage can be prevented. In the future, we will study ways to provide customized services using personal data stored in blockchain.

A Study on the Diversification Strategy for Open IPTV Contents with special reference to Activation of Participants (오픈 IPTV 서비스의 콘텐츠 다각화 전략 연구 - 참여 콘텐츠의 활성화 전략을 중심으로)

  • Lee, Sang-Ho
    • Journal of Digital Contents Society
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    • v.11 no.3
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    • pp.399-406
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    • 2010
  • This study deals with the proposition of the diversification strategy for participation contents service based on the open IPTV policy, and the strategic implication for IPTV players. This paper demonstrates implication for activation of participation contents to IPTV players with reference to differentiation of usages and needs to internet and television. Thus this paper proposes for diversification of player's competency (1) variety of production channels for contents, (2) enhanced accessibility, and (3) the strategic consistency for industrial eco-system. Moreover, this paper suggests that device differentiation for creation of demand, boosting customer satisfaction & immersion through closely interlocking contents.

The Comparison of the Current Unblance Factor According to the Cable Array Method using PSCAD/EMTDC and FEA (PSCAD/EMTDC와 FEA를 이용한 케이블 배열 방법에 따른 전류 불균형률의 비교)

  • Shin, Ho-Jeon;Kim, Ji-Ho;Kang, Gab-Suk;Kim, Jae-Chul;Lee, Hyang-Beom
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.62 no.2
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    • pp.72-78
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    • 2013
  • In this study, samples from the site where there occurred unbalanced current when cable routing were analyzed, and the simulation program for electric power system analysis, PSCAD/EMTDC, was used to calculate the current unbalance on cable routing. Based on electromagnetic finite element analysis(FEA), electromagnetic parameters enabled the interlocking with COMSOL for the calculation of allowable current ampacity and magnetic filed distribution. This then led to modeling unbalanced current between common modes using the unbalanced current analysis program, thereby comparing and discussing the results from both. The analyzed model is a common mode 2 parallel circuit, which is a basic model for cable routing, and by arranging cables in various ways, the arrangement with the least current unbalance was suggested, which would, in the future, prevent earth faults and extend life for the whole cable.