• 전기학회논문지P
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• 제58권4호
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• pp.377-384
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• 2009

In this paper, leakage current sensing module of SoC(System on Chip)type and real time monitoring system under consideration of electromagnetic interface in power trunk line are developed. The first, leakage current sensing module of SoC type under consideration of electromagnetic interface is developed, and the developed sensing module of SoC type is composed of leakage sensing part, power supply part, interface part, communication part, AD(Alternating current to Direct current)convert part and amplification part. And also the electromagnetic compatibility is evaluated by conduction and radiation of EMI(Electromagnetic Interference) for developed sensing module. The developed system can have confidence, stability and do energy saving under mixed electric circumstance of the low voltage communication device and high voltage equipment. The second, the real time remote monitoring system is developed using designed wire and wireless communication module with leakage current sensing module of SoC type. The developed real time remote monitoring system can monitor sensing state, occurrence state of leakage current and alarm for each step etc.. And the device configuration, PCB layout for leakage current sensing module of system on chip type and the experiment configuration in consideration of EMI are presented. Also the measurement results of conduction and radiation for EMI are presented.

• Journal of Acupuncture Research
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• 제30권3호
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• pp.27-38
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• 2013

Objectives : This study was designed to evaluate patient satisfaction of Korean medicine therapy using treatment tool by psychological type. Methods : 48 subjects were participated in this study. Before a treatment, we analyzed a patient's phychological type first by using a questionnaire. And then we divided 3 groups which were called a rational sympathy module group, emotional sympathy module group, control group. Manner of medical consultation according to patient's phychological type was carried out in all groups. After all treatment, we conducted a survey about medical service perception index, patient happiness index, medical satisfaction index. To evaluate a satisfaction degree, we analyzed results of survey statistically. Results : The results of the analysis, both rational sympathy module group and emotional sympathy module group got a higher score than control group statistical significantly on medical service perception index. Emotional sympathy module group got a higher score than control group statistical significantly on patient happiness index and medical satisfaction index. But rational sympathy module group only had a higher tendency than control group on patient happiness index and medical satisfaction index. Emotional sympathy module group got a higher score than rational sympathy module group on medical service perception index, patient happiness index and medical satisfaction index. Conclusions : Korean medicine therapy using treatment tool by psychological type consisted of patient's phychological type questionnaire and manner of medical consultation could improve a patient's satisfaction. It was more effective in emotional sympathy module group than rational sympathy module group.

• 동력기계공학회지
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• 제10권4호
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• pp.65-70
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• 2006

This study is to experimentally evaluate the cooling performance of the Bonding type and Injection type of heat sink using three different kinds of industrial Peltier module by digital LabViewTM measurement. Injection type of heat sink could be more efficient for the heat transfer than Bonding type, even with 30% more radiating surface area. In addition, the experimental results revealed that the sufficient power supplied was able to show the better cooling performance of Peltier module. In order to verify the optimal cooling performance of the cooling device, two Peltier module, HMN 6040 and HMN 1550 with Bonding and Injection type of heat sink were used. The cooling performance with injection type of heat sink was 2.11% and 6.24% better than that with bonding type of heat sink under the HMN 6040 and HMN 1550, respectively.

• 한국포장학회지
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• 제15권1호
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• pp.7-16
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• 2009

The purpose of this study was to evaluate current packaging modules and design the most acceptable packaging module for domestic and international distribution systems. An optimum packaging module can reduce package costs as well as total distribution costs such as transport, materials handling and warehouse costs. Three different sizes of packaging modules, namely U-type($600{\times}500\;mm$), K -ype($550{\times}366\;mm$) and I-type($600{\times}400\;mm$), were evaluated in terms of the area efficiency and MOEs(measures of effectiveness) for the T-11($1100{\times}1100mm$) and T-12($1,200{\times}1,000\;mm$) pallets. The results showed that the U-type module could fit very well for both pallets and the area efficiency of each module was more than 99 percents. Area efficiency of K-and I-type modules was greatly affected by the pallet footprint dimensions. U-type module also performed better result from MOEs evaluation. Twenty sub-multiple sizes derived from the U-type module were suggested for the future development of the Korean and ISO standards on dimension of transport packages.

• 한국산학기술학회논문지
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• 제12권11호
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• pp.5117-5122
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• 2011

본 논문에서는 열 해석 시뮬레이션 프로그램인 COMSOL Multiphysics를 활용하여, LED Module의 제작 시, 가장 선호되는 패키지 종류인 COB Type과 보드를 생략한 COH Type의 열 해석 시뮬레이션을 진행한다. LED Module의 시뮬레이션 결과 방열판을 통과하는 위치에 따라 COB Type은 Max. 약 $78^{\circ}C$ ~ Min. 약 $62^{\circ}C$, COH Type은 Max. 약 $88^{\circ}C$ ~ Min. 약 $67^{\circ}C$에서 온도가 안정이 됨을 확인하였다. COB Type과 비교하여 Max. 온도는 약 $10^{\circ}C$ 차이가 나지만, Min. 온도에서 약 $5^{\circ}C$정도로 격차가 감소함을 확인하였으며, LED Point 온도특성곡선을 확인 한 결과 COB Type은 Max. 약 $100^{\circ}C$ ~ Min. 약 $77^{\circ}C$, COH Type은 Max. 약 $100^{\circ}C$ ~ Min. 약 $86^{\circ}C$온도가 안정이 됨을 확인하였으며, COB Type에 비해 COH Type이 약 $10^{\circ}C$ 온도가 높게 측정되었다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.758-761
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• 2003

전원장치의 소형화 핵심기술인 반도체 스위칭 기술을 이용하여 단일 전원을 사용하는 소형, 경량화 전자기기에 적합한 5 V/500 mA급 트랜스리스형 파워 모듈(transless type power module)을 설계하였다. 파워 모듈은 강압형 chopper 방식을 이용한 스위칭회로, 제어회로, 전압검출회로, 그리고 정전압 회로 둥으로 구성되어 있으며, 하이브리드-집적회로형(hybrid-IC type)으로 제작되었다. 본 연구에서 설계한 스위칭 레귤레이터 전원회로는 5 V/500 mA급 트랜스리스형 파워 모듈의 전기적 특성을 만족하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 추계학술대회 논문집 전기물성,응용부문
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• pp.222-223
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• 2006

In this paper, we manufactured high flux LED module with Through Hole type. and we measured electrical, optical and thermal properties by driving type. LED module was composed with 8*8 arrangement form by using the glass epoxy PCB. Also, we measured the most suitable driving type with static voltage driving type and static current driving type. As a result, the LED Module of static voltage driving type showed high luminance characteristic than the static current driving type by suppling enough bias. However, the static current driving type showed more stable driving properties because of fast decreasing properties about brightness by increasing the surrounding temperature in the static voltage driving type. Also, due to Quantum confined Stark effect from piezoelectric field, the wavelength of bule peak shifted to long wavelength direction by increasing the surrounding temperature in the static voltage driving type.

• 한국정보통신학회논문지
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• 제8권5호
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• pp.1068-1073
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• 2004

전원장치의 소형화 핵심기술인 반도체 스위칭 기술을 이용하여 5 V/500 mA급 트랜스리스형 파워모듈(transless type power module)을 설계하였다. 파워 모들은 강압형 chopper 방식을 이용하였으며, 스위칭회로, 제어회로, 전압검출회로, 그리고 정전압 회로 등으로 구성되어 었다. 본 연구에서 설계한 스위칭 파워모듈은 0.2 V의 load regulation, 0.1 V의 line regulation, 85 mVp-p의 output ripple 전압, 64.7 kHz의 스위칭 주파수, 최대 58% 정도의 효율을 나타내었으며, 신뢰성 및 EMC 평가항목을 만족하였다.

• 센서학회지
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• 제31권6호
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• pp.376-382
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• 2022

A triboelectric nanogenerator (TENG) can obtain electrical output due to the reciprocal motion between two objects (i.e., rubbing), in which repetitive contact is made. High reliability, stable output, and high reproducibility are important aspects of the electrical output obtained through a TENG as a sensor or generator, thus enabling its meaningful use. Therefore, many researchers fabricated TENGs into individual parts in the form of one module type to obtain high reproducibility and reliability. Since a TENG manufactured as a module type operates as a single device, it is possible to collect kinetic energy and convert it into electrical energy through the interaction between internally configured elements without the need for a separate structure. In addition, it is relatively easy to apply the size to the body, machine tools, and natural environment by simply adjusting the size suitable for use and surrounding environmental conditions. In this paper, the application cases of module-type TENGs are divided into four areas, and the research progress of module-type TENGs in each area is extensively reviewed.

• 한국전자파학회논문지
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• 제19권8호
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• pp.940-945
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• 2008

본 논문에서는 능동 위상 배열 레이다 시스템에 적용 가능한 브릭형 구조의 능동 송수신 모듈을 설계 및 제작하였다. 제안한 브릭형 구조의 능동 송수신 모듈은 MCM(Multi-Chip Module) 형태이며, 타일형 능동 송수신 모듈에 적용할 수 있도록 하기 위하여 캐비티 구조와 주요 특성을 만족하도록 설계하였다. 제작한 브릭형 능동 송수신 모듈의 시험을 통하여 목표로 한 전기적 특성을 만족함을 확인하였으며, 능동 위상 배열 레이다에 운용 가능성을 확인하였다.