• 시스템엔지니어링학술지
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• 제19권2호
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• pp.135-144
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• 2023

Artificial Intelligence (AI) is a prominent topic in almost every field. In Korea, Systems Engineering (SE) procedures are applied in Defense Acquisition, and it is anticipated that SE procedures will also be applied to systems incorporating AI capabilities. This study explores the applicability of the concepts "AI4SE (AI for SE)" and "SE4AI (SE for AI)," which have been proposed in the United States, to the Korean context. The research examines the feasibility of applying these concepts, identifies necessary tasks, and proposes implementation strategies. For the AI4SE, many attempts and studies applying AI to SE Processes both Requirements & Architectures Define, System implementation & V&V, and Sustainment. It needs Explainability and Security. For the SE4AI, the Functional AI implementation level, Quality & Security of the Data-set, AI Ethics, and Review policies are needed. Furthermore, it provides perspectives on how these two concepts should ultimately converge and suggests future directions for development.

• 센서학회지
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• 제13권4호
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• pp.270-276
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• 2004

In this paper, we introduce the software and hardware of the measuring system for on-line test and performances evaluation of traction and braking in KTX(Korea Train Express). The measuring system focuses on the verification of the performance and acquisition of test data. The hardware is connected many kinds of sensors, such as speed sensor, thermocouple. The software controls the hardware of the measuring system, performs the analysis and calculation of measurement data and acts as interface between users and the hardware. For this purpose, three programs, such as a measuring program, a back-up program and a analysis program, have developed.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1770-1773
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• 2005

The performance evaluation of AOV(air-operated valve) requires the processes to confirm the actuator system capability. It is necessary to evaluate the thrust of the air actuator for the margin evaluation. In this paper, to evaluate and analysis the air actuator, the performance test system and operating program are developed. This system is composed of several sensors such as pressure sensor, LVDT, and LoadCell which are used to get the data for evaluation. The LabVIEW was used for developing the operating program. The test system and operating program are proved through the actual test of the diaphragm actuator.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 D
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• pp.2741-2743
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• 2003

This paper simulates analog signal processing program by using Matlab GUI which is one of the application parts of Matlab. It is aimed of the embodiment to observe signal acquired by interfacing AD data converted by signal processing program using a simple Data Acquisition Board with computer through the Matlab GUI program and analyze the capability of Matlab CUI and other various signals-harmonic analysis, generating state of interval harmonic, observation of voltage state.

• 조명전기설비학회논문지
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• 제30권2호
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• pp.37-42
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• 2016

This paper proposes a method to develop a high-precision dimension measurement system using a linear variable differential transformer sensor. The Dimension targets for measurement is carbon material vanes of key element in the rotating parts within vehicle circulating pump. Data acquisition system for dimension measurement is designed using the NI Compact RIO. And the program applying the dimension measurement algorithm is built using NI LabVIEW. The dimension measuring program is composed of a FPGA program, Real Time program and Host program. The method of the experiment compares master vane with target vane for measure the length of the carbon material vane. The experimental results confirmed the usefulness of the accuracy within ${\pm}4um$.

• 대한기계학회논문집
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• 제18권9호
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• pp.2297-2311
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• 1994

This paper presents the study on the development of a DNC, system IPIS(Interactive Plant Information System)/DNC, which can manage NC machines and robots as a distributed control method in the machine. processing factory. The IPIS/DNC system is composed of a host computer, satellites and NC machines. A set of software modules are developed on the host computer and the satellites separately. By modularizing each functions of the IPIS/DNC system and using multi-taking method, the functions such as NC program management, NC program distribution, and shop monitoring can be performed on the host computer, and the functions such as NC program transfer to the NC machines, and NC program editing can be performed on the satellites. A Relational database which is linked with job scheduling system is used for IPIS/DNC system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 B
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• pp.616-619
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• 1995

This paper describes developement of on-line system for vibration signal analysis. In the power system, the main reason of transformer fault is due to a large amount of current by a short-circuit and a ground-fault. The electromagnetic force caused by fault-current deforms transformer windings and results in vibration pattern change. Therefore if the continuous on-line vibration monitoring on transformer is performed, an incipient failure can be detected. The developed system is composed of data acquisition devices, user interface program, signal processing program, diagnosis and trend analysis program, self diagnosis program and communication program.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 D
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• pp.2562-2564
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• 2004

This paper addresses a simulation for the Ethernet based data transmission between the CIC(Centralized Traffic Control System) and the SCADA(Supervisory Control and Data Acquisition) system. Fame error rate and throughput are calculated and compared for the two cases that the CTC/SCADA has an extra error control scheme besides the internal CRC32 of the Ethernet and that no extra error control has been done. Simulation program is constructed with the Matlab and the Matlab GUI and then converted into a stand-alone $c^{++}$ program to be used on any non-Matlab environments.

• Journal of Biosystems Engineering
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• 제7권2호
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• pp.18-29
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• 1983

효율적(效率的)인 농업기계(農業機械)의 실내(室內) 및 실외실험(室外實驗)을 위(爲)하여 Microcomputer에 의(依)한 Data 측정(測定)을 위(爲)해 A/D 변환기(變煥器)를 Interface 시키고, 이를 기록보관(記錄保管)하기 위해 Computer memory인 2716용(用) EPROM programmer와 Microprinter를 interface시켰고, 실험(實驗) 후(後)Data를 다시 HP computer로 전송(傳送)하기 위(爲)한 RS232C 장치(裝置) 등(等)의 Hardware를 구성(構成)하고, 이들의 작동(作動)을 위(爲)한 Microprogram을 개발(開發)하여 Data acquisition system으로 활용(活用)할 수 있는 방안(方案)을 연구(硏究)한 본(本) 연구(硏究)의 주요(主要) 결과(結果)를 요약(要約)하면 다음과 같다. 1. 사용(使用) channel수(數), 측정시간(測定時間) 간격(間隔) 및 측정(測定) data수(數)를 자유(自由)로 조정할 수 있는 측정용(測定用) microprogram을 개발(開發)하였으며 최소(最小) 측정시간(測定時間) 간격(間隔)은 $58.8{\mu}s$이었다. 2. A/D 변환기(變煥器)의 Calibration을 위(爲)해 Function generator에서 삼각파(三角波), 구형파(矩形波), sin파등(波等)을 발생(發生)시켜 Oscillograph에서 확인(確認)하고 이를 계측(計測)하여 보관(保管)한 후(後) HP Computer에 전송(傳送)하여 plotting한 결과(結果) 정확(正確)한 파형(波形)을 얻을 수 있었다. 3. Data 기록(紀錄)을 위(爲)한 EPROM programmer는 잘 동작(動作)하였으며 기록(紀錄) 및 원래(原來)의 Data와 비교(比較)하는 데 총 소요시간(所要時間)은 75초 정도였고, 취급이 용이(容易)할 뿐 아니라 지워서 재사용(再使用)할 수 있어 경제적(經濟的)이었다. 4. Data의 기록(記錄)을 위(爲)한 Microprinter는 그 2kB Decimal로 변환(變換)시켜 Print하는 시간(時間)이 15분(分) 정도이었으며 계측(計測)과 동시(同時)에 기록(記錄)시키는 완속측정용(緩速測定用)으로 적당하였다. 5. 본(本) system과 HP3000 컴퓨터 간(間)의 Data 전송(傳送) 장치(裝置)를 사용(使用)하면 2k byte의 Data를 HP3000 computer로 전송(傳送)하는데 1~2분(分)정도 소요(所要)되었고, 작동(作動)은 만족스러웠다. 6. 사용(使用) 전원(電源)은 DC/DC 변환기(變煥器)를 사용(使用)하여 입력전원(入力電源)이 7~25V로 단일화(單一化)하였으며, 그 상용전류(常用電流)는 1.8A정도로 tractor의 battery를 사용(使用)할 경우도 시동시(始動時)에 전압강하(電壓降下)에 의(依)한 컴퓨터의 오동작(誤動作)이 일어나지 않았으며 야외실험(野外實驗)에서의 적응성(適應性)이 우수하였다. 이상(以上)의 결과(結果)를 종합할 때 본(本) system은 실내(室內) 및 실외(室外) 실험(實驗)을 위(爲)한 Data auquistition system으로 활용(活用)할 수 있으며 경제적면(經濟的面)이나 정말 고속 측정(側定) 면(面)에서 우수한 성능(性能)을 갖춘 것으로 인정(認定)된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
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• pp.54-56
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• 2005

Analysis of the voice and its corresponding studies are examined from the recording of the voice through microphone and various calculation processes of the signals by using computer. Voice analyser include data acquisition and analyzing program. Since oath program uses different voice signal processing algorithm, thorough understanding of the operation is essential. In this study, analysis result of patient voice were compared by using four different voice analysis programs such as MDVP, Praat, TF32, and the program developed in this study. Pitch, jitter and shimmer were selected as comparison analysis factors. As a result, pitch, jitter and shimmer showed different result since each program uses different pitch computation algorithm.