• Title/Summary/Keyword: Field measuring

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염분 오손 자동측정에 관한 연구 (A Study on the Automatic Measurement of Salt Contamination)

  • 곽희로;김한상;권동진;이동준;김경화;조국희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1995년도 하계학술대회 논문집 C
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    • pp.1362-1364
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    • 1995
  • In this paper, the automatic device for measuring the salt contamination on insulators was developed. The device consists of electronic insulators, measuring system, monitoring system, and printer. It was shown that the level of salt contamination measured by the developed device is similar to that measured by the brush cleaning method. Therefore, the developed automatic measuring device can be used in field, in order to predict the cleaning time of insulators and prevent the failure due to the salt contamination.

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효율향상 프로그램의 성과계량검증을 위한 계측자료 보정 기법 (A Measuring Data Calibration Technique for Measurement and Verification of Energy-Efficiency Programs)

  • 조기선;박종진;이창호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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    • pp.834-836
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    • 2005
  • This paper describes algorithms for enhancing the reliability of measurements to verify the performance of energy efficiency programs with an simple method. Fundamentally, measurements contain erroneous data because of the various causes. and so proper procedures or schemes are prepared before the performance is evaluated. In this paper, we propose an approach for detecting and correcting an adulterate data, such as missing and bad data. Erroneous data are detected or corrected by pre-described measuring conditions, ensemble average, and standard deviation of measurements at measuring time. The proposed algorithms are tested by field test measurements. From case studies we drew the promising results.

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IBM-PC를 이용한 다점 계측 자동화 시스템 (Automatic multipoint measuring system using IBM-PC)

  • 정상용;양원영
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
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    • pp.541-546
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    • 1989
  • In case there are many points to be measured in the field, conventional measuring system requires a lot of manpower and is liable to miss applying the timely countermeasure because processing and analyzing the data obtained also takes much time. Therefore the purpose of this paper is focused on removing the above defects by introducing automatic multi-point measuring system by use of IBM-PC or the compatibles easily at hand nowadays. Principal components of the system is composed of control box, A/D converter. 32 channel 4 wire switch boxes and strain amplifier. An application software was developed for multi point measurement system in order to efficiently evaluate the stability of the structures such as retaining walls.

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활선상태 접지특성 측정시스템 개발 (A Development of the Measuring System for Grounding Properties in Liveline)

  • 최남호;문영표;정재기;박강식;한상옥
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2002년도 춘계학술대회 논문집 유기절연재료 전자세라믹 방전플라즈마 일렉트렛트 및 응용기술
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    • pp.36-40
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    • 2002
  • This paper presents the results of a investigation, a development of the measuring system for grounding properties in live-line. The importance of the grounding system and it's property has been increased with the development, enlarge in capacity, of electrical industry. Moreover, with the rapid growth of communication and precision industry, now, we should consider the grounding properties to ensure the stable and/or safe operation. But the conventional measuring system is not proper to measure the grounding properties of the system, voltage applied. So, in this investigation, we proposed a new method for live-line measurement and develope the system. And through the field test we could confirm the superior performance of th developed system.

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트롤 모니터링 시스템의 개발에 관한 연구 ( 1 ) - 트롤 전개판의 전개 간격 계측 시스템 - (Development of Trawl Monitoring System ( 1 ) - Distance Measuring System between Trawl Doors -)

  • 신현옥;이춘우
    • 수산해양기술연구
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    • 제33권3호
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    • pp.189-193
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    • 1997
  • We make an ultrasonic system as a trial to measure the distance between trawl doors, and carried out a water tank ($24{\times} 24$m, water depth 1 m) experiment for confirming the practical use of the system in October 1996. This system calculates the distance between the pinger (50 kHz) and the transponder (50 kHz/70 kHz) attached each one on the trawl door by measuring the time-difference of receiving with two channels receiver on the trawler. This paper assums that both the length of the warp from the stern to the trawl door is same. At results the system shows a good relation between the distance and the time-difference of receiving while the location of the pinger is moved in variously in the water tank, and it was found that the method of measuring techniques on the prototype system could be applied to the measurement of the trawl door opening in the field experiment.

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현장측정을 통한 발코니 창호의 차음성능에 관한 연구 (Investigation of the sound insulation performance of balcony window through field measurement)

  • 주문기
    • KIEAE Journal
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    • 제9권5호
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    • pp.63-68
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    • 2009
  • As with the disappearance of a living room window due to the trend in apartment housing construction that prefers a larger, expanded living room, the sound insulation performance of the balcony window is becoming an important factor to determine the level of indoor noise at an apartment unit. Considering that the indoor noise inside an apartment unit is mandated by law at or below 45dB(A), the balcony window is increasingly assuming an even more important role. Sound insulation performance of the window was measured by examining differences in data involving varying angles of incidence of the sound source as obtained from the same balcony window. Also, acoustic intensity measuring was performed at and around the window to determine its sound insulation quality. Results of measuring on the sound source's angles of incidence indicated that the performance showed some differences in lower frequency ranges, though with no significance. Intensity measuring results showed that the sound insulation performance was reduced near the connection part of the window and the window frame.

편향법을 이용한 웨이퍼 변형 측정 (Measurement of Wafer Deformation using Deflectometry)

  • 이호동;신상훈;유영훈
    • 한국광학회지
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    • 제24권6호
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    • pp.324-330
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    • 2013
  • 편향법을 이용하여 면적이 비교적 크고 거울과 같이 산란이 거의 없는 물체의 3차원 측정을 하였다. 편향법을 통해 얻은 왜곡 무늬로부터 위상과 기울기를 구하기 위해 푸리에변환 방법을 이용하였고, 구한 기울기로부터 높이를 구하기 위해 최소자승법을 이용하였다. 웨이퍼에 미세 응력을 주었을 때 변형을 편향법을 이용하여 측정할 수 있음을 확인하였다.

박용 엔진 성능 측정 시스템 개발 (Development of Performance Measuring and Analysis system for Diesel Engine)

  • 서중석;육심균;조창호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1996년도 하계학술대회 논문집 B
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    • pp.953-955
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    • 1996
  • For organizing a flexible and reasonable measuring system, it is necessary that one should not only understand the process itself but also choose an adequate system. In this paper, we want to show a system of measuring and analyzing diesel engine's performance which is capable of producing a report of a certain format as well as gathering, analyzing and managing data. The system was designed by VXIbus as an all-in-one. It was also proven by a real field test through the Guam diesel power plant, which was designed and constructed by Hanjung.

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RTD와 4-20[mA] 아날로그 계측용 다기능 모듈의 개발 (The Development of Multi-Function Measurement Module for RTD and 4-20[mA] Analog Input)

  • 박종찬;김병진
    • 전기학회논문지P
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    • 제53권2호
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    • pp.77-81
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    • 2004
  • In this paper, multi-functional measurement module for RTD and 4-20mA Analog input is presented. As you know, In many industry field, RTD has been used for measuring a temperature. Although It have good properties such as wide measurement range, accuracy, the hardware or software compensation methods were applied to better linearity in many applications. According to this paper, a simply approximation method and various measuring technique are proposed to compensate large lead's resistance influence in RTD temperature measurements. As the experiment and simulation results, it is proved that the proposed method has good performance of measuring temperature. Additionally, with the CAN based communication, remote monitoring and parameter setting functions are realized.

A NEW METHOD FOR MEASURING M-H HYSTERESIS LOOPS OF UNIAXIALLY MAGNETIC MATERIALS

  • Hur, Jeen;Shin, Sung-Chul
    • 한국자기학회지
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    • 제5권5호
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    • pp.387-390
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    • 1995
  • We have developed a new method for measuring the M-H hysteresis loop of a spheroid-shape magnetic material having a uniaxial anisotropy and discussed its accuracy at fields near the coercivity. Our torque magnetometric method simultaneously gives the saturation magnetization and the remnant magnetization. Furthermore, the coercivity depending on the applied field orientation is accurately measured by this simple technique. An accuracy of the present method is negligibly affected even at fields near the coercivity, where the magnetization is not uniform. The technique makes a torque magnetometer an extremely high sensitive tool for measuring M-H hysteresis loop.

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