• 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.

• 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.

• 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.

• 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.

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

• 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.

• 센서학회지
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• 제18권5호
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• pp.385-392
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• 2009

This paper describes the algorithm development of a new body pressure detection sensor for occupant classification system. U.S. Government has required that advanced airbag system should be installed to every automobiles after 2006 according to FMVSS 208 regulation. Therefore, Occupant Classification System should be provided the passenger with safety in order to protect the infants or children that sit in the front passenger seat. When an occupant sits on the chair of the vehicle, deployment of the airbag depends on passenger's weigh distribution and postures. Authors have been developed a new pattern recognition of passenger and weight distribution at the same time by Force Sensing Resistor for the safety.

• 한국의학물리학회지:의학물리
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• 제32권4호
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• pp.153-158
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• 2021

Purpose: This study evaluated the features of a pressure mapping system for patient motion monitoring in radiation therapy. Methods: The pressure mapping system includes an MS 9802 force sensing resistor (FSR) sensor with 2,304 force sensing nodes using 48 columns and 48 rows, controller, and control PC (personal computer). Radiation beam attenuation caused by pressure mapping sensor and signal perturbation by 6 and 10 mega voltage (MV) photon beam was evaluated. The maximum relative pressure value (mRPV), average relative pressure value (aRPV), the center of pressure (COP), and area of pressure distribution were obtained with/without radiation using the upper body of an anthropomorphic phantom for 30 minutes with 15 MV. Results: It was confirmed that the differences in attenuation induced by the FSR sensor for 6 and 10 MV photon beams were small. The differences in mRPV, aRPV, area of pressure distribution with/without radiation are about 0.6%, 1.2%, and 0.5%, respectively. The COP values with/without radiation were also similar. Conclusions: The characteristics of a pressure mapping system during radiation treatment were evaluated on the basis of attenuation and signal perturbation using radiation. The pressure distribution measured using the FSR sensor with little attenuation and signal perturbation by the MV photon beam would be helpful for patient motion monitoring.