• Journal of Biosystems Engineering
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• 제40권3호
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• pp.284-288
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• 2015

Training power tiller operators in safe farming is necessary to avoid farming accidents. With the continuing progress in computational technology, driving simulators have become increasingly popular for conducting such training. Purpose: The objective of this study is to develop mock control devices and data acquisition apparatus for a tiller simulator. Methods: Except for the stand and tail wheel adjusting levers, the mock control devices were developed using a tiller handle assay. The data acquisition apparatus was realized using an embedded data-logging device and LabVIEW, the system design software. Results: The control devices of a real handle assay were successfully mimicked by the mock operator control devices, which used sensors for the relevant measurements. The data from the mock devices were acquired and transmitted to the main computer at intervals of 10 ms via Wi-Fi. Conclusions: The developed mock control devices operate similar to real power tillers and can be utilized in power tiller training simulators.

• Journal of information and communication convergence engineering
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• 제8권5호
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• pp.528-533
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• 2010

This research is part of the development of Data Acquisition embedded system that specifically use in ship. The purpose of this data acquisition system mainly is to acquire data from multiple sensors or others related external devices and it will further discuss in this paper. The data collecting, hardware design, software design and the final project outcome of this data acquisition system will be discussed in this paper.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1152-1154
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• 2003

The needs of 3-D data have been increasing for various applications like visualization, 3-D modeling, planning and management as well as entertainment. Mobile mapping has become a quick and practical means for acquiring necessary 3-D data for above-mentioned applications. A mobile mapping system mainly consists of two main components, viz. data acquisition devices and positioning devices. The data acquisition devices consist of CCD cameras or/and laser scanners. The positioning devices consist of GPS, INS, Odometer (shaft encoder) and some other referencing devices. The overall accuracy of mobile mapping system depends on the accuracy of positioning devices and their integrated output. Though, GPS is the main input device for the position information, the signal is not available for the computation of position all the times in urban area. The GPS satellites are normally obstructed by high-rise buildings. Thus it is very important to understand the accuracy of such a system in different environments and means to solve such problems. We have developed a mobile mapping system called VLMS (Vehicle-borne Laser Mapping System), which consists of CCD Cameras, Laser scanners, GPS, INS and Odometer. In this paper, we will present and discuss the accuracy of this system with data acquired in different environments (open area, urban area, tunnel, express way etc) by analyzing the data with respect to other existing digital data.

• 전기전자학회논문지
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• 제23권1호
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• pp.322-325
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• 2019

비간섭 전력부하 감시 알고리즘은 메인선의 총 전력 사용량만으로 개별 전기 기기들의 전력 사용량을 추론할 수 있다. 이런 알고리즘을 개발하기 위해서는 개별 기기의 전력사용 패턴 데이터와 이들 기기의 다양한 조합 전력사용 패턴 데이터가 필요하다. 본 논문에서는 스마트팜용 비간섭 전력부하 감시 알고리즘개발에 필요한 전력사용 패턴 데이터 취득시스템 개발방법을 제시하였다. 데이터 취득시스템은 매초마다 개별 전기 기기들의 전력 사용량과 다양한 조합의 시나리오에 따른 전력 사용량을 동시에 측정할 수 있도록 되어 있다. 측정된 데이터는 LTE 망을 통하여 스마트팜 외부에서 원격으로 모니터링이 가능하며, 측정된 데이터는 외부 서버에 저장된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 A
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• pp.38-40
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• 2001

Measuring technology based on the computer and software is used worldwideiy by the aids of remarkably improved digital technology and measuring devices, and the electro- magnetic interference due to high currents and high voltages is being solved by the helps of applied optic instrumentation technology. The automatic acquisition, analysis and storage system of test data is available for utilizing the numerical computation technology. The measuring accuracy and testing efficiency are thus much higher because of the developed technologies. In this paper, the construction of data acquisition system in KERI including measuring devices and its application to the short circuit test are described, and additionally the algorithm of the analyzing program for the automatic process of test data and the results of analyses are described.

• 정보보호학회논문지
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• 제33권3호
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• pp.537-547
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• 2023

사물인터넷(Internet of Things)기술이 발전함에 따라 다양한 분야에서 사물인터넷 기기를 활용하고 있다. 하지만 이는 새로운 사이버 공격 표면이 되었고 기존 사이버 침해사고를 염두하지 않았던 산업까지 영향을 미치는중이다. 침해사고 발생 이후 사후처리, 피해확산 방지 등이 중요하지만 이에 관련된 표준이나 가이드라인이 부족하여 대응하기 어려운 현황이다. 따라서 본 논문에서는 이러한 침해사고 대응을 위해 침해사고 데이터 수집 절차를 정립하고 수집 가능한 데이터를 제시하여 범용적인 사물인터넷 기기의 침해사고 데이터 수집 방안을 개선하였다. 또한 실험을 통해 데이터 수집 절차의 효율성과 타당성을 증명하였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.1289-1293
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• 2010

A slipring or FORJ are usually adopted in order for power supply of Geo-centrifuge and input/output data acquisition. Since using slipring causes quite a lot electrical noise, an optical communication using FORJ becomes more general for data acquisition. Such data acquisition devices, however, require frequent maintenance and replacement due to deterioration by long term usage. DICT has set up a real-time wireless date acquisition system using wireless communication technology instead of FORJ. The system enables a remote measurement at any inertial acceleration field up to 100g level and provides as same performance as FORJ. The priority of this system is to use a normal modem substituting a special FORJ.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제5권8호
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• pp.351-360
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• 2016

사물인터넷의 센서는 주변 컨텍스트를 수집하는데 사용되며, 애플리케이션은 이를 분석하여 상황을 인지하거나 예측한 후 상황에 특화된 스마트 서비스를 제공하게 된다. 사물인터넷 컨텍스트를 확보(Acquisition)하는데 풀링, 푸싱 등 방식들이 있는데, 대부분의 사물인터넷 장비는 특정한 하나의 방식만을 지원한다. 따라서, 애플리케이션이 필요로 하는 컨텍스트 획득 방식과 장비가 지원하는 획득 방식이 일치하지 않을 수 있으며 이 경우 개발 노력의 증가, 향후 유지보수 비효율성등의 문제가 발생한다. 본 논문에서는 애플리케이션과 장비 간의 컨텍스트 획득 방식 비호환성을 효과적으로 해결하기 위한 디자인 패턴(Design Pattern)들을 제시한다. 제시된 패턴들을 적용하면, 비호환성이 발생하는 사물인터넷 애플리케이션을 보다 체계적이며, 효과적으로 개발할 수 있고, 나아가 향후 유지보수의 효율성도 증가된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
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• pp.538-540
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• 2004

Electrical currents generated by human heart activities create magnetic fields represented by MCG(MagnetoCardioGram). Since an MCG signal acquisition system requires precise and stable operation, the system adopts hundreds of SQUID(Superconducting QUantum Interface Device) sensors for signal acquisition. Such a system requires fast real-time data acquisition in a required sampling interval, i.e., 1 mili-second for each sensor. This paper presents designed hardware to acquire data from 256-channel analog signal with 1 ksamples/sec speed, using 12-bit 8-channel ADC devices, SPI interfaces, parallel interfaces, 8-bit microprocessors, and a DSP processor. We implemented SPI interface between ADCs and a microprocessor, parallel interfaces between microprocessors. Our result concludes that the data collection can be done in $168{\mu}sec$ time-interval for 256 SQUID sensors, which can be interpreted to 6 ksamples/sec speed.

• 진공이야기
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• 제2권3호
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• pp.4-10
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• 2015

We developed a real-time three-polarizer spectroscopic ellipsometer based on a new data acquisition algorithm and a general data reduction (the process of extracting the ellipsometric sample parameters from the Fourier coefficients). The data acquisition algorithm measures Fourier coefficients of radiant flux waveform accurately and precisely. The general data reduction is introduced to represent the analytic functions of the standard uncertainties of the ellipsometric sample parameters, and the extracted theoretical values closely agree with the corresponding experimental data. Our approach can be used for optimization of measurement conditions, instrumentation, simulation, standardization, laboratory accreditation, and metrology.