• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.9
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• pp.999-1004
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• 2014

This intelligent keyboard instrument self learning system developed in this study consists of smartphone based learning application and keyboard-instrument auxiliary module. The keyboard instrument auxiliary module receives playing information of the instrument through smartphone application and bluetooth communication. Then the module shows it through LED display so that the relationship between the keyboard and scale could be easily recognized even for beginners. Also, this system provides saving function and analyzing function of user's performance data, making learning more effective.

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2556-2558
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• 2002

In this paper, the design guideline of communication interrace module for home-appliances is proposed. The requirements of the interface between white-goods and communication module are analyzed. Finally, the proposed interface structure is implemented using PLC technology.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.93-94
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• 2012

본 논문에서는 태양광 모듈 집적형 전력변환장치 (Photovoltaic Module Integrated Converter, PV MIC)를 구동하기 위한 제어 시퀀스를 분석하고 이를 구현한다. 이를 위해 Cascade Buck-Boost Converter Topology를 채택하였고, 이를 기반으로 일사조건에 따른 최대 전력점 추종을 위해 PV MIC의 동작 모드를 결정하는 제어 시퀀스를 제안한다. 실제 PV Module을 연결한 PV MIC의 구동 실험을 통하여 제안한 제어 시퀀스를 검증한다.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.168-169
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• 2012

본 논문에서는 Cascade Buck-Boost 컨버터를 사용한 모듈 직접형 컨버터 (Module Integrated Converter, MIC)를 이용하여 독립형으로 저전압 배터리를 충전할 수 있는 알고리즘을 제안하고 이를 검증한다. 제안한 알고리즘은 입력 조건의 변화를 고려하여 MPPT 충전 동작 및 Constant Current (CC) - Constant Voltage (CV) 제어를 수행할 수 있어 배터리를 항상 최대의 전력으로 충전할 수 있게 한다. 제안한 충전 장치는 150W급 PV Module을 사용하여, 98.4%의 고효율 획득 및 알고리즘 성능을 검증한다.

• Journal of Advanced Information Technology and Convergence
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• v.8 no.2
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• pp.111-118
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• 2018

Information communication authority module software contains various functions and services. A software test is the only acceptance test step. Recently, however, all development steps have become important. In particular, the software acceptance step is very high, and a study of the effective use of limited time and resources on acceptance step is needed. This study examined the efficiency of the Test Design Technique for Software Test. The proposed Test Design process was applied to the domain systems of info-communication and the degree of improvement was measured. This paper establishes Software Test design process Infrastructure based on the developed software.

• Aerospace Engineering and Technology
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• v.4 no.2
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• pp.79-87
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• 2005

This paper describes a new on-board computer design for the next generation satellite. The new on-board computer utilizes centralized processing architecture with MCMERC325C CPU based on functional modular design concepts. The on-board computer consists of PM32 Module, TC-TM Module, IO Module and Power module. The IEEE-1355 DS/DE, or SpaceWire, provides a standard communication interface between module. It also provides simple cross-strap design for redundancy management and increases re-usability of the modules.

• Journal of the Korean Society of Industry Convergence
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• v.22 no.6
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• pp.703-709
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• 2019

This paper proposes a monitoring and remote control system, an essential part of In Vehicle Infotainment (IVI) and Human Vehicle Interface (HVI) to provide safety and convenience to a driver. The system utilizes Bluetooth for a short range communication and utilizes WCDMA for a long range communication to enhance efficiency. In this paper, an integrated controller, which integrates a CAN communication module, a Bluetooth communication module, a WCDMA communication module, is designed to control a car. Also, a remote server for managing data is designed to provide real-time monitoring and remote control for a user via smart devices. Experiment results show that all the proposed remote control, driving log, real-time monitoring, and diagnostics functions are working properly. With the proposed system, a driver can drive safely by monitoring and inspecting a car before driving via smart devices, and control conveniently by controlling a car remotely.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.10
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• pp.1079-1086
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• 2015

This paper introduces the architecture of OUTPUT module that is suitable using in safety related system having SIL4 and proposes the quantitative target that is required for OUTPUT module. Especially, only output type that is made up Relay output signal and analog signal among various output ways is applied in output module that is a part of safety related system. The FMEA(Failure Modes and Effect Analysis), FTA(Fault Tree Analysis) are used as analysis method. As a result, it proposes to the architecture and failure frequency of the Output module that is used in SIL4 safety related system.

• Proceedings of the KIEE Conference
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• 2005.05a
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• pp.275-277
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• 2005

In a lithium-ion battery which is being used in many portable electronic goods, electrolyte is disaggregated and then the gas is happened when electric charging volt is over the 4.5V. So, the pressure on the safety valve is increased and electrolyte is leaked out in the cell. It leads to the risk of explosion. On the other hand, in the case which the battery is discharged excessively, the negative pole is damaged and the performance of the battery is deteriorated. The protection module of a lithium-ion battery is used for preventing such risk and the inspection system is needed to check the performance of such protection module. In this research, a PC-based auto inspection system is developed for the inspection of a battery protection module using Dallas chipset. In the inspection system, AVRl28 chip is used as a controller and the communication protocol is developed for the data communication between the protection module and the AVR128 chip. And GPIB interface is used for the control of measuring devices. Also, MMI environment is developed using LabView for convenient monitoring by the tester.

• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.11
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• pp.3-8
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• 2016

In this paper, we design to generate 12.5 GHz spaced 256 number of multi-carrier generation module using 32 laser diodes. We modulate the generated multi-carrier generation module by 12.4 Gbps, and confirm the performance of optical channels passing through recirculating loop up to 1000km distance. An experimental result shows that the carrier away from the laser diode is significantly influence by noise effect.