• 전기학회논문지
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• 제63권12호
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• pp.1722-1725
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• 2014

An experimental investigation of COP(center of pressure) was performed using FSR(force sensing resistor) and force plate. The FSR sensor system is used as effective device to detect the movement of human body in activities of daily living. It has been shown that the FSR provides the trajectories of COP with repeatability and reliability.

• 한국임상수의학회지
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• 제35권5호
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• pp.206-210
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• 2018

The purpose of this study was to evaluate the reliability and validity of the Force-Sensing Resistor (FSR) for measurement of static hindlimb weight distribution in beagle dogs and to compare these results to a Digital Weighing Scale (DWS). Nine healthy beagle dogs were recruited for this study. Static weight distribution was evaluated four times at intervals of 5 days with each device and two observers to calculate the intra- and interobserver reliability. The intraclass correlation coefficient (ICC) values of the FSR for intraobserver reliability were moderate to good (0.74). The results for the DWS showed poor to moderate (0.56) ICC values for intraobserver reliability. The ICC values for interobserver reliability were 0.53 and 0.61 for FSR and DWS, respectively, indicating poor to moderate agreement. Our findings suggest that the Force-Sensing Resistor can be used to measure static weight distribution in veterinary medicine. However, caution should be taken when comparing measured values of static weight distribution obtained utilizing both the FSR and DWS due to their low positive correlation (R = 0.41, p < 0.01).

• 산업기술연구
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• 제21권A호
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• pp.89-96
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• 2001

A low cost force./moment sensor that can be used in the robot teaching task is presented. Force Sensing Resistor is used as the transducer. The principle of force/moment detection is explained, the architecture of the sensor is shown, and the measurement of the force/moment is presented. The force/moment sensor shown in this work is not meant to be used in a precise force/moment control, but it is intended to be used in the robot teaching where low accuracy can be tolerated.

• 대한후두음성언어의학회지
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• 제9권1호
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• pp.11-16
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• 1998

Background and Objectives : Electrolarynx has been used as one of the methods of rehabilitation for the laryngectomees. Previous electrolarynx could not alter frequency and intensity simultaneously. This institute developed an electrolarynx named "Evada" using FSR(force sensing resistor) sensor, which can control the frequency(and/or intensity) simultaneously. This study was performed for the normal control and laryngectomees with three types of electrolarynx (Evada, Servox-inton, Nu-vois) to reveal functional characteristics of Evada Materials and Methods : five laryngectomees and five normal adults were made to express there sentences(discriptive sentence, "You stay here" ; question sentence, "You stay here？" ; exclamation sentence, "You!! stay here!"), using three types of electrolarynx. Frequency change and intensity change from first and last vowel was calculated in three sentences and analyzed statistically by paired T-test. Results : The frequency change in the question sentence and exclamation sentence was more prominent in Evada than in Servox-inton and Nu-vois. The intensity change in the question sentence and exclamation sentence was also more prominent in Evada than in Servox-inton and Nu-vois. Conclusions : Evada could control frequency and intensity simultaneously and control degree of frequency(and/or intensity) according to the pressing force into the button. Evada could adjust continuously frequency and intensity during conversation. So, Evada is better in producing intonation and contrastive stress than Nu-vois and Servox-inton.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2013년도 제47차 동계학술대회논문집 21권1호
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• pp.281-282
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• 2013

맥박을 측정하는 방법 중 하나인 PPG(photoplethysmography) 센서는 설계가 비교적 간편하며 사용이 편한 장점이 있지만, 움직임으로 인한 동잡음에 취약하다는 단점이 있다. 본 논문에서는 동잡음으로 인한 센서와 손가락 사이의 밀착되는 압력의 변화를 측정하여 왜곡된 신호를 보상하였다. PPG센서와 손가락 사이의 압력을 측정하기 위하여 FSR(force sensing resistor)센서를 이용하여 측정하였으며, 측정된 압력과 왜곡된 PPG 신호 비교를 통해 왜곡된 PPG신호와 FSR센서에서 얻은 압력 사이의 연관성을 확인하였고, 신호처리를 통하여 왜곡된 신호를 보상 시켰다. 이와 같은 방법으로 PPG신호를 보상하게 된다면 웨어러블한 환경에서의 적용뿐만 아니라 헬스케어로 응용이 가능할 것으로 보인다.

• 센서학회지
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• 제26권5호
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• pp.331-337
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• 2017

A readout circuit for a tactile sensor pad based on force sensing resistors was proposed, which was composed of an analog signal conditioning circuit and a digital circuit with a microcontroller. The conventional signal conditioning circuit has a dc offset voltage in the output signal, which results from the reference voltage applied to the FSR devices. The offset voltage reduces the dynamic range of the circuit and makes it difficult to operate the circuit under a low voltage power supply. In the proposed signal conditioning circuit, the dc offset voltage was removed completely. The microcontroller with A/D converter and D/A converter was used to enlarge the measurement range of pressure. For this, the microcontroller adjusts the FSR reference voltage according to the resistance magnitude of FSR under pressure. The operation of the proposed readout circuit which was connected to a tactile sensor pad with $5{\times}10$ FSR array was verified experimentally. The experimental results show the proposed readout circuit has the wider measurement range of pressure than the conventional circuit. The proposed circuit is suitable for low voltage and low power applications.

• 전자공학회논문지T
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• 제36T권1호
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• pp.64-70
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• 1999

본 논문에서는 매니퓰레이터로 작업체 이동시 이동방향 가, 감속에 따른 미끄럼, 회전등의 위치에러 방지를 위한 그리퍼 힘 제어를 작업계획도를 설정해 구간별로 알아본다. 또한 작업체와 매니퓰레이터사이에 가장 정확한 정보를 제공할 수 있는 tactile 센서를 그리퍼에 부착해 연속적으로 tactile 영상 데이터 추론을 통해 미끄럼과 회전을 감지한다. 계산된 파지력과 감지된 에러량 비교를 통해 보상제어와 이를 응용한 최적의 파지력을 구할 수 있다. tactile 센서로는 압각센서인 FSR(Froce Sensing Resistor)을 사용해 22×22 센서회로를 구성하였다. 전처리로써 연속적인 taxel 수를 문턱값으로 설정해 필터링 작업을 하였고, 모멘트 메써드를 감지 알고리즘으로 사용해 실험하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2008년도 추계학술대회 논문집
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• pp.505-506
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• 2008

• 로봇학회논문지
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• 제5권4호
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• pp.294-301
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• 2010

In order to produce a convenient robot for the aged and the lower limb disabled, it is needed for the research detecting implicit walking intention and controlling robot by a user's intention. In this study, we developed sensor module system to control the walking- assist robot using FSR sensor and tilt sensor, and analyzed the signals being acquired from two sensors. The sensor module system consisted of the assist device control unit, communication unit by wire/wireless, information collection unit, information operation unit, and information processing PC which handles integrated processing of assist device control. The FSR sensors attached user's the palm and the soles of foot are sensing force/pressure signals from these areas and are used for detecting the walking intention and states. The tilt sensor acquires roll and pitch signal from area of vertebrae lumbales and reflects the pose of the upper limb. We could recognize the more detailed user's walking intention such as 'start walking', 'start of right or left foot forward', and 'stop walking' by the combination of FSR and tilt signals can recognize.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1793-1794
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• 2008

본 연구는 다양한 환경에서의 인간형 로봇의 안정적인 보행을 하기위한 FSR (Force Sensing Resistor) 센서 기반의 보행패턴에 관한 전체 시스템의 설계와 이의 모의실험이다. 인간형 로봇의 안정적인 보행을 구현하기 위해서는 보행 패턴의 ZMP(Zero Moment Point) 궤적이 안정 영역 내에 위치하게 하여야 하고, 실제 보행 중에도 외부의 환경적인 요인과 내부의 제어 오차에 따라 보행패턴의 수정과 보완이 요구된다. 이에 FSR 센서를 적용하여 전체 인간형 로봇의 보행 시스템을 설계하고 안정적인 다양한 보행을 구현하기 위한 보행패턴을 제안한다. 이를 모의실험을 통해 평지, 계단, 경사면에 따른 보행 안정성을 검증한다. 차후 이러한 모의실험 결과를 보완하여 FSR 센서를 실제 인간형 로봇에 장착하고 실험하여 안정적인 보행을 구현할 계획이다.