• Title/Summary/Keyword: Data Acquisition Equipment

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Automatic function test system for parts mounted PCB (실장 PCB의 기능 검사 자동화)

  • 박종건;임영철;김의선;김태곤;조경훈
    • 제어로봇시스템학회:학술대회논문집
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    • 1993.10a
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    • pp.244-249
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    • 1993
  • This paper proposes a method of automatic function test for parts mounted Printed Circuit Board. For this purpose, we designed a Data Acquisition Equipment, PC interface card and inspection software. The experiment was done for the coffee vending machine and its result was good.

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A Study on Running Characteristic of High-Speed Train (고속철도차량의 주행 특성에 관한 연구)

  • Han, Young-Jae;Kim, Ki-Hwan;Park, Chan-Kyoung;Park, Choon-Soo;Han, Seong-Ho;Kim, Jong-Young
    • Proceedings of the KIEE Conference
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    • 2004.04a
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    • pp.266-268
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    • 2004
  • In this study, on-line measuring system were developed to verify performances and functions of traction system that are used in KTX(Korea Train eXpress) synthetically and efficiently, and have been measuring electric signals of vehicle as well as mechanical signals up to the present. Running-braking measuring equipment was constructed in vehicle to optimize signal acquisition and analysis ability of the measuring system. Measurement data of signal were performed acquisition, analysis and evaluation using this equipment. KRRI(Korea Railroad Research Institute) described about main specifications of measuring equipment. Also, the structure and principles as well as main circuit system were explained in brief. KRRI analyzed the characteristics comparing design values with experimental values about running distance, running time and positive acceleration for KTX is running in full traction. We analyzed the distance and time according to number of motor block. In result, running characteristics of traction system in KTX were verified and could be evaluated.

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Development of End-milling Inspection System Using 450kVp Tube Voltage (450kVp Tube Voltage를 이용한 엔드밀링 검색 시스템 개발)

  • Yoon, Moon-Chul;Jung, Jin-Seok;Hwang, In-Ho;Yuk, Sun-Woo;Park, Su-Kang;Chin, Do-Hun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.8 no.2
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    • pp.10-17
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    • 2009
  • Transillumination system used by radiation is widely applied to industrial imaging system. In this study, the linear detector array constructed with scintillator and pin diode, and a multi-channel data acquisition system was developed for precision inspection of end-milling. The detector module consists of $16-CdWO_4$crystal scintillator and photodiode array. The detector and data acquisition system was applied to precision inspection of end-mill and the images of the end-mill were successfully reconstructed. The total system can analyze the Detector Quantum Efficiency(DQE) of each system. The performance of developed photodiodes equipment was compared with each other for different crystal geometry and its characteristics. Finally fine details of the end-mill phantom were constructed for industrial application. The image acquired contains several objects on a real time data transfer and the linear X-ray scanning system can be applied to many fields of a industry.

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Case Study of Design and Implementation for Hadoop-Based Integrated Facility Monitoring System (하둡 기반의 통합설비 모니터링시스템 설계 및 구현 사례 연구)

  • Kim, Sangrak;Jang, Gilsang;Cho, Chiwoon
    • Journal of Korean Institute of Industrial Engineers
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    • v.40 no.1
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    • pp.34-42
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    • 2014
  • SCADA and DCS that have performed automatic control and monitoring activities increase the productivity of enterprise in industries. In such systems, although their performance had been improved, there are still many deficiencies in predictive maintenance which can foresee the risk of any kinds of accidents. Because the data acquisition systems of main facilities are being distributed throughout the whole plant and therefore, integration of data obtained from the systems is very difficult. Accordingly, techniques that acquire meaningful information from the gathered data through realtime analysis still need to be improved. This paper introduces a developed facility monitoring system which can predict equipment failure and diagnose facility status through big data analysis to improve equipment efficiency and prevent safety accidents.

Optimization Methodology of Quality Measurement of Digital Correlator (디지털 상관기 성능 측정의 최적화 기법)

  • Yeom, Jae-Hwan;Jeong, Goo-Young;Roh, Duk-Gyoo;Oh, Se-Jin;Kim, Kwang-Dong;Lee, Chang-Hoon
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.371-372
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    • 2006
  • In this paper, we propose a method that measures quality of digital correlator. Quality of digital correlator in field of image composition of radio astronomy have as important position for acquisition of radio wave image with high precision. Digital correlator should have wide bandwidth and high precision to study on deep space. Digital correlator, therefore, should be designed to have high speed processing and high precision. But, real time measurement of quality of digital correlator using acquisition data is difficult to compare accuracy of result because digital correlator should process a large quantity of data with high speed. Measurement method of quality, also, has intricate implementation of experiment equipment. this paper present methods that compose experiment equipment without external installation easily and verify quality of digital correlator perfectly.

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Tractor Performance Instrumentation System

  • Wan Ismail, Wan Ishak;Yahya, Azmi;Bardaie, Mohd. Zohadie
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 1996.06c
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    • pp.569-581
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    • 1996
  • A microcomputer -based data acquistion system was designed and developed at Michigan State University , USA to conduct field data studies. The system designed for the research carried out used an Apple IIe microcomputer for collecting data on-board the tractor. An AII3 Analog to Digital (A/D_ convertor was chosen to interface each analog signal to the microcomputer. A commercially available Dj TPM II was employed to display information such as an engine speed, ground speed, percent drive wheel slip , distance travelled and area covered per hour. The frequency output from the radar unit was channeled through a frequency to voltage (F/V) convertor , so that AII3 Analog to Digital (A/D) convertor could read it. The fuel consumption was measured using on EMCO pdp-1 fuel flow meter attached to the engine fuel line. The draft of the tillage and other drag equipment was determined using strain gages attached to the drawbar of the tractor. The system was developed to collect the draft and fuel requirements for various farm equipment different kind of soils.

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Effect of new audio magnetolluric equipment for groundwater investigation in water barren area

  • Lunkai Yang;Hong Liu;Zhanxiang He
    • 한국지구물리탐사학회:학술대회논문집
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    • 2003.11a
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    • pp.398-401
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    • 2003
  • This paper deals with the recent achievements in AMT data acquisition and processing, which have improved the quality of the collected data,. Comparing AMT with VES, IP and logging data, it is concluded through some case histories that qualified results can be achieved in probing the karst water with AMT technique.

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PC Based Sensor Application DAQ (PC기반 센서 응용 실험실습 Data Acquisition)

  • Park, Yong-Hoo;Park, Chang-Soo
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.06a
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    • pp.59-60
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    • 2006
  • Principals and characteristics of sensors can be easily understood by experiments based on PC. Applied experiments help further understanding sensor's wide utilization. Moreover, PC based operation makes stored sensor data to be used in Excel for various charts and graphs.

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Cost-Efficient and Automatic Large Volume Data Acquisition Method for On-Chip Random Process Variation Measurement

  • Lee, Sooeun;Han, Seungho;Lee, Ikho;Sim, Jae-Yoon;Park, Hong-June;Kim, Byungsub
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.15 no.2
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    • pp.184-193
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    • 2015
  • This paper proposes a cost-efficient and automatic method for large data acquisition from a test chip without expensive equipment to characterize random process variation in an integrated circuit. Our method requires only a test chip, a personal computer, a cheap digital-to-analog converter, a controller and multimeters, and thus large volume measurement can be performed on an office desk at low cost. To demonstrate the proposed method, we designed a test chip with a current model logic driver and an array of 128 current mirrors that mimic the random process variation of the driver's tail current mirror. Using our method, we characterized the random process variation of the driver's voltage due to the random process variation on the driver's tail current mirror from large volume measurement data. The statistical characteristics of the driver's output voltage calculated from the measured data are compared with Monte Carlo simulation. The difference between the measured and the simulated averages and standard deviations are less than 20% showing that we can easily characterize the random process variation at low cost by using our cost-efficient automatic large data acquisition method.

240 channel Marine Seismic Data Acquisition by Tamhae II (탐해2호의 240채널 해양탄성파 탐사자료취득)

  • Park Keun-Pil;Lee Ho-Young;Koo Nam-Hyung;Kim Kyeong-O;Kang Moo-Hee;Jang Seong-Hyung;Kim Young-Gun
    • Geophysics and Geophysical Exploration
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    • v.2 no.2
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    • pp.77-85
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    • 1999
  • The 3-D seismic research vessel, Tamhae II, was built to raise up the probability of the hydrocarbon discovery in the Korean continental shelf and the first test survey was completed in the East Sea. During the survey, the 240 channel 2-D marine seismic data were acquired by the Korean flag vessel for the first time. Tamhae II has been equipped with source, receiver, recording equipment, and navigation equipment as well as an onboard processing system. The source is composed of four subarrays and each subarray has six airguns. Total airgun volume is 4578 $in^3$. The receiver consists of two sets of 3 km long 240 channel streamer. In the first survey, the successful acquisition of 2-D seismic data was accomplished. From the result of the data processing, we confirmed that the high quality seismic data were acquired. For the high quality data acquisition, technology of survey design and planning, operation of vessel and equipments and systematic quality control should be developed.

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