• 한국컴퓨터정보학회논문지
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• 제20권9호
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• pp.47-53
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• 2015

In this paper, we propose a novel tangible interface system whose system does not use the expensive hardware is introduced. This proposed tangible interface is used on the table top capacitive multi touch-screen. The tangible interface apparatus which is called smart puck has sanguine arduino compatible board. The board has a Cds photo-sensing sensor and the EPP8266 WiFi module. The Cds sensor decodes the photometric PWM signals from the system and sends corresponding information to the system via TCP/IP. The system has a server called MT-Server to communicate with the smart pucks. The tangible interface shows reliable operation with fast response that is compatible to the expensive traditional devices in the market.

• 한국자동차공학회논문집
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• 제13권6호
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• pp.99-104
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• 2005

The CARB in USA has demanded OBD functions that detect any deterioration of performance of OTS as well as a simple defect of OTS which can affect emission to meet the reinforced emission regulation. In this paper, OTS plausibility monitoring functions to meet the demand from CARB are discussed. The output from OTS is used for the diagnostics of the torque converter clutch stuck and the gear ratio synchronous error. It is possible to diagnose the abnormality of OTS function by considering the oil temperature characteristics which changes according to the driving status of vehicles. In result, the OBD regulations of the CARB can be satisfied obligating car manufacturer to detect any problems in OTS functions which can affect emissions.

• 대한전기학회논문지
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• 제40권2호
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• pp.207-216
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• 1991

In the case that the robot manipulator should respond to the variance and uncertainty of the environment in performing preforming precision tasks, it is indispensable that the robot utilizes the various sensors for intrlligence. In this paper, the robot force control method is implemented with a force/torque sensor, two personal computers, and a PUMA 560 manipulator for performing the various application tadks. The hybrid position/force control method is used to control the force and position axis separately. An interface board is designed to read the force/torque sensor output into the computer. Since the two computers should exchange the information quickly, a common memory board is designed. Before the algorithms of application tasks are developed, the basic force commands must be supplied. Thus, the MOVE-UNTIL command is used at the discrete time instant and, the MOVE-COMPLY is used at the continuous time instant for receiving the force feedback information. Using the two basic force commands, three application algorithms are developed and implemented for edge-following, insertion, and grinding tasks.

• 반도체디스플레이기술학회지
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• 제23권2호
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• pp.28-32
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• 2024

The personal mobility Sharing service is currently active. Especially, electric scooters are widely utilized because they can move comfortably at a high speed over a short distance with a simple driving method. Its driving method is easy, but there is no protection device to protect the bare body. So, there is a greater accident than other means of transportation, and if two people are on board, there is higher accident probability. However, since there is no specific ways to prevent multi-person boarding yet, we propose a multi-person boarding detection model using tilt and pressure sensor. The proposed method measures the tilt degree and direction by using a tilt sensor installed in the center of the board plate and detects multi-people riding.

• 대한기계학회논문집 C: 기술과 교육
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• 제2권1호
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• pp.1-8
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• 2014

최근 차량이 기계장치 중심에서 전기전자 장치 중심으로 발전하고 있으며, 상용차량 역시 전기전자 장치가 증대되고 있다. 정전용량 방식의 연료 센서는 연료의 레벨을 정전용량 값으로 측정하여 센서 내 MCU 를 통해 연산과정을 거쳐 최종 전압값의 신호로 출력해 주는 센서이다. 기존의 세라믹 저항을 이용한 센서보다 내구성이나 연료 측정 정확성이 향산된 진보된 센서로 센서에 대한 소프트웨어 검증을 위하여 가변 커패시터 보드를 제작하여 R-BENCH TOOL 을 통해 test case 를 자동으로 생성시킨 후 연료 센서의 소프트웨어 검증을 시도하였다. 또한 결론으로 98% 이상의 높은 소프트웨어의 신뢰도가 있음을 확인하였다.

• 센서학회지
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• 제25권1호
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• pp.57-64
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• 2016

To understand a two-phase flow, a liquid film thickness is one of the important factors. A lot of researches have been performed to measure liquid film thickness with various approaches. Recently, an electrical conductance method which uses the conductivity of the liquid film has been widely applied on measuring the liquid film thickness. Though the electrical method has an advantage in high spatial resolution, as the conductivity of liquid can be affected by its temperature variation, the conventional electrical conductance methods have a limitation in being applied on varying temperature conditions where a heat transfer is involved. The purpose of this study is to develop a three-ring liquid film sensor that overcomes the limitation of the conventional method. The three-ring conductance method can measure the film thickness regardless of temperature variation by compensating the change of liquid conductivity. Considering its application on a wide range of conditions such as high temperature or curved surfaces, the sensor was fabricated on flexible printed circuit board (FPCB) in this study. This paper presents the concept of the measurement method, design procedure, prototype sensor fabrication and calibration results.

• 한국정보통신학회논문지
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• 제11권8호
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• pp.1478-1485
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• 2007

본 논문에서는 풍향 풍속 계측모듈 및 DSP 센서인터페이스 회로 보드를 포함하는 기상계측 시스템을 제안한다. 이 DSP 시스템은 풍향풍속모듈, 대기압센서, 대기 온도 센서의 정보를 받아들이고, 빠르게 처리하여 PC 모니터링 시스템에 전달한다. 특히 풍향 풍속 모듈과 DSP 하드웨어는 직접 설계하여 적용한다. 풍향 풍속 모듈은 바람에 관한 벡터적 정보를 얻기 위해 4개의 박막형 RTD(Resistive Temperature Detectors) 저항센서를 히팅 코일에 의해 일정하게 가열된 원기둥 모양의 지지 표면에 벡터적으로 배치하는 구조를 채택한다. 이 구조를 채택한 계측 모듈은 진동, 습기, 부식 등에 강인하면서 정확한 계측을 가능케 한다. 센서 신호처리 회로는 TI사의 고속 DSP인 TMS320F2812 사용한다. 적용된 풍향 풍속 모듈을 통해 얻어진 데이터와 DSP 인터페이스 회로보드의 빠른 데이터 처리를 통해 저렴한 기상계측시스템을 구성 할 수 있었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 E
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• pp.2164-2166
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• 1999

This paper is describes the measured electric field waveform radiated by lightning discharge. We have performed measurement and analysis of the electric fields associated with stepped leaders. Electric field measurement system was composed of hemisphere electric field sensor, measurement system of a distance from lightning strokes, automatical recording system, A/D board, personal computer etc. A/D board have high sampling time, high speed data processing, 8bit of resolution. Also, measured characteristics of stepped leaders radiated by were analyzed.

• 한국생산제조학회지
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• 제22권4호
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• pp.658-664
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• 2013

In this paper, we present a case study of vibration suppression based on the application of active damping to the small boring process of a boring bar with diameter below ${\Phi}12$. The proposed active damping system consists of an acceleration sensor for real-time monitoring of the vibration signal, a driver for phase control in a computer program, and piezoelectric actuators for damping. In this system, the vibration signals are detected by the acceleration sensor and sent to the computer as an input. The phase shift parameter of the natural frequency of the input signal is sent to the data acquisition board in the computer and calculated by the phase control program. This study confirmed the effectiveness of this damping system, and it opens up the possibility of the development of active damping systems for small boring processes.

• 분석과학
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• 제19권1호
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• pp.9-17
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• 2006

생체 물질의 농도, 두께 및 특정 생체 물질의 분석을 위한 반응 속도론적 자료를 검출하는 능력 그리고 antigen/antibody, ligand/receptor, protein/protein 및 DNA/DNA 상호작용을 포함하는 다양한 생체물질간의 상호작용에 대한 분석에 적용되고, 자연 환경중 오염물질의 분석 등 다양하게 적용되는 표면 플라즈몬 공명 센서를 제작하였다. 또한 표면 플라즈몬 공명 센서를 제어하고 검출기로부터의 데이타(data)를 personal computer로 받아들이기 위해 data acquisition board를 이용하여 LabVIEW program을 만들었다.