• Title/Summary/Keyword: Equipments

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An Study on the Development of Waterproofing Execution Technology With high Temperature and Spray Equipments of Piston Type (피스톤 방식의 고온·고압 뿜칠장치를 이용한 방수 시공 기술 공법에 관한 연구)

  • Moon, You-Seok;Choi, Eun-Gyu;Choi, Sung-Min;Gwak, Gyu-Sung;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2008.11a
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    • pp.7-12
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    • 2008
  • We constructed Seal type waterproofing with adhesive and swelling properties in the field of construction work as yet. But we have many problems of seal type waterproofing with adhesive and swelling properties for construction. Because it has high viscosity, so wokers are too adhered for the work. So, we developed and applied about the high temperature and spray equipments of piston type better than before. We able to be expect that cost reduction and increase construction ability by high temperature and spray equipments of piston type.

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A Frequency Resource Assignment Algorithm for FH Radio Using Isotropic Multi Dimension Array (등방 다차원 배열을 이용한 FH 무전기용 주파수 자원 할당 알고리즘)

  • Lee, Seong-Min;Han, Joo-Hee
    • Journal of the Korea Institute of Military Science and Technology
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    • v.9 no.4
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    • pp.24-31
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    • 2006
  • To reduce the interferences between the radio equipments which are operated in frequency hopping mode, the frequency resource should be assigned to each equipment without overlapping when several groups of radio equipments operate in the same area. If the radio equipments are in a different area, the partial frequency overlaying can be permitted. From the isotropic multi-dimensional array, several frequency assignment tables can be extracted for a same area. Also several tables can be extracted for different areas. Since there can be no overlapped frequencies between the tables for the same area, no interference between the radio equipments in an area is guaranteed. The frequencies overlapped between 2 tables for 2 different areas are pre-planed as required. The interference performance in frequency hopping radio can be controlled as desired using the proposed Frequency Resource Assignment Algorithm using Isotropic multi-dimensional Array.

Development of on-line system using electromagnetic wave for diagnosis of deteriorated power equipment (전자파 검출에 의한 전력기기 On-Line 열화 측정시스템 개발)

  • Kang, C.W.;Choi, G.S.;Lee, Y.S.;Kim, C.W.;Kang, D.S.
    • Proceedings of the KIEE Conference
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    • 2001.07c
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    • pp.1664-1666
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    • 2001
  • This paper presents the development of electromagnetic wave detecting equipment for diagnosis of enclosed switchboard. High voltage power equipments are very important equipment of the key industries and the private enterprise. Power line accidents are national plans because of those set off casualties lose of power equipments and communication networks. Therefore the necessity of the development of detecting for power equipment diagnosis is demand for prevention of high voltage equipment accidents. This paper is the development of electromagnetic wave detecting equipment for diagnosis of high voltage equipment. This paper establishes the diagnosis method for high voltage power equipments, that secures original technique and possesses detecting technique for electromagnetic wave. By the study we developed electromagnetic wave detector, and we applied this equipment application tests at the place constructed high voltage equipments.

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Development of the Emergency Generator Equipments Diagnosis System (비상용 발전설비 진단시스템 개발)

  • Lee, Sang-Cheol;Na, Chae-Dong;Lee, Seong-Beom;Yoo, Jae-Moon;Choi, Sik
    • Proceedings of the KIEE Conference
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    • 1999.07f
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    • pp.2590-2593
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    • 1999
  • This paper describes the development of Emergency Generator Equipments Diagnosis System for monitoring generator equipments and battery system. This system is capable of measuring on up to 20 separate sites of generator, engine and periphral equipment's. Battery system also capable of measure the setting time, float and discharge voltage of up to 240 cells in a single installation, and has the memory capacity to store battery's alarm data information on up to 200 separate sites. This system are easy to maintain and attain cost effectively, so that prepared for meeting the customer's service needs immediately. The system is additionally programmed with a each model, that will enable to accurately determine the generator equipments and remain battery capacity in a system following a short discharge test. It is also equipped with remote interrogation and control facilities.

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Study On The Protective Effect of Lightning Surge for Electronic Equipments According to Installation Methods of Surge Protective Device (서지보호소자의 설치방식에 따른 기기의 뇌보호효과 검토)

  • Lee, Suck-Woo;Whang, Kyu-Hyun;Seo, Ho-Joon;Rhie, Dong-Hee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2004.11a
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    • pp.616-619
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    • 2004
  • Lightning surge damages of low voltage equipments in building are increasing due to increase in electrical and communication networks in the information-oriented society. And electronic equipments contained electrical circuits with semiconductor are very weak against lightning surge. The surge protective devices for electronic circuit in electronic equipments and AC power lines are becoming more widely. To achieve effective method of surge protection, there are needs for correlation between lightning surge protective effect of electronic equipment and installation method of surge protective device. This paper describes as a result of experiments for correlation between lightning surge protective effect and installation method of surge protective device.

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Real-time 3D Monitoring & Simulation of Cluster Type Semiconductor Manufacturing Equipments (클러스터형 반도체 장비의 실시간 3차원 모니터링 및 시뮬레이션)

  • 윤택상;한영신;이칠기
    • Proceedings of the IEEK Conference
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    • 2002.06b
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    • pp.41-44
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    • 2002
  • The Semiconductor Industrial are developed after 1940. It was called “Rice of Industrial”. It needs great effect in Electronics. It was developed highly in recent several years with semiconductor manufacturing equipments. Semiconductor manufacturing devices are developed “In-line” type in the first stage. But It was non-effective in modem many type process. Because this reason, Cluster type manufacturing equipments are proposed. Cluster have ability of many-type-process and effective-scheduling by circular type process chamber In this paper. we propose a real-time 3D monitoring and simulation of this semiconductor manufacturing equipments. By proposed monitoring method, we have capability real visual maintanance & virtual simulation. This effective visual 3D monitoring could apply another dangerous environment in entire industrial.

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The Study of Using Separate Heatpipes for Thermal Control in Electronic Equipments (분리형 히트파이프를 이용한 전자장비내 발열체의 온도제어에 관한 연구)

  • 배석태
    • Journal of Advanced Marine Engineering and Technology
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    • v.27 no.2
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    • pp.305-311
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    • 2003
  • This Paper Presents an information about the heat transfer characteristics of a separate type thermosyphon in electronic equipments. The heat removal problem of electronic equipments is regarded as an important factor and a separate type heatpipes can be utilized as a cooling device of electronic equipments (such as CPU of a Personal computer or notebook). In this study. heat source ($50\times50\times2 mm $aluminum Pseudo CPU) was used for the experiment. The device can transfer heat from the evaporator to the condenser through natural circulation (without any external driving forces) and the results indicate that the device is capable of dissipating over 60W of thermal energy and keeping the heating plate surface temperature under $50^{\circ}C$.

An Analysis and Assessment of Transient Vibration Phenomenon for Precision Equipment Due to Adjacent Utility Operation in TFT-LCD Fab (TFT-LCD 생산공장 내 유틸리티 가동으로 인한 정밀장비 과도진동 현상 및 평가)

  • Baek, Jae-Ho;Lee, Hong-Ki;Son, Sung-Wan;Chun, Chong-Keun
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.17 no.8
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    • pp.726-735
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    • 2007
  • Inside the factory buildings of aprecision industry (which produces semiconductors or TFT-LCD), thousands of vibration-sensitive precision equipments operate in the clean rooms. Various utility equipments that are installed around them for proper operation cause various sources of noise and of vibration to exist inside the clean rooms and thus deteriorate the noise and the vibration environment within. In this study, we check if the existing transient vibration phenomenon is caused by the vibrations that arise from operating the utility installed near these equipments; compare and evaluate the vibration criteria of precision equipments regarding the transient vibration phenomenon; and check the efficiency of these criteria.

The Protection Effect of Lightning Surge for electronic Equipments According to Installation of Surge Protective Device and Earth Leakage Breaker (서지보호소자와 누전차단기 설치에 따른 기기의 뇌보호 효과)

  • Lee, Suck-Woo;Ko, Yeon-Sung;Yeo, Dong-Goo;Seo, Ho-Joon;Rhie, Dong-Hee
    • Proceedings of the KIEE Conference
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    • 2005.11a
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    • pp.90-92
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    • 2005
  • Lightning surge damages of low voltage equipments in building are increasing due to increase in electrical and communication networks in the information-oriented society. And electronic equipments contained electrical circuits with semiconductor are very weak against lightning surge. The surge protective devices for electronic circuit in electronic equipments and AC power lines are becoming more widely. To achieve effective method of surge protection, there are needs for correlation between lightning surge protective effect of electronic equipment and installation method of surge protective device. This paper describes as a result of experiments for correlation between lightning surge protective effect and installation of surge protective device and Earth Leakage Breaker.

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A Development of Indicators to Decide Replacement Priority for Medical Equipment in Hospital (병원 의료장비 교체 우선순위를 결정하는 지표의 개발)

  • Park, Jun;Lee, Mi-Young;Kim, Ki-Tae
    • Journal of the Korean Operations Research and Management Science Society
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    • v.37 no.4
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    • pp.161-180
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    • 2012
  • We develop some evaluation tool and indicators for the scores for medical equipment replacement in hospital. There has been no research for Korean hospitals although there are many for foreign medical institutions. In this paper, among many variables that were obtained from the previous studies, eleven variables are selected as indicators and tied as three groups. And then we obtain scores of medical equipments based on the weighted values of those indicators. We can make decisions whether we replace medical equipments or not by ranking the medical equipments based on the scores. This paper shows that we can make decisions to replace medical equipments very objectively and effectively using the evaluation tool and indicators we develop.