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WO2008105590A1 - Détecteur de raideur et détecteur d'activité musculaire équipé dudit détecteur de raideur - Google Patents

Détecteur de raideur et détecteur d'activité musculaire équipé dudit détecteur de raideur Download PDF

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Publication number
WO2008105590A1
WO2008105590A1 PCT/KR2008/000831 KR2008000831W WO2008105590A1 WO 2008105590 A1 WO2008105590 A1 WO 2008105590A1 KR 2008000831 W KR2008000831 W KR 2008000831W WO 2008105590 A1 WO2008105590 A1 WO 2008105590A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
sensor
hardness
buffering member
muscle
Prior art date
Application number
PCT/KR2008/000831
Other languages
English (en)
Inventor
Hwa Cho Yi
Seok Hwan Kim
Moromugi Shunji
Ishimatsu Takakazu
Original Assignee
Industry-Academic Cooperation Foundation, Yeungnam University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industry-Academic Cooperation Foundation, Yeungnam University filed Critical Industry-Academic Cooperation Foundation, Yeungnam University
Publication of WO2008105590A1 publication Critical patent/WO2008105590A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
    • A61B5/224—Measuring muscular strength
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/296—Bioelectric electrodes therefor specially adapted for particular uses for electromyography [EMG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4519—Muscles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0247—Pressure sensors

Definitions

  • the present invention relates to a hardness sensor and a muscle activity sensor using the same. More particularly, the present invention relates to a hardness sensor, which can easily measure the hardness of a test target using a buffering member and two pressure sensors regardless of the amount of pressure that is applied, and to a muscle activity sensor, which enables the hardness of muscle to be measured using the hardness sensor and, at the same time, enables electromyogram signals to be measured at a single position on a human body using a myoelectric sensor, thus accurately measuring the activity of muscle.
  • HCI Human-Computer Interface
  • the HCI technology using biological signals is based on a method of measuring the activity of muscle and controlling a specific device according to the measured activity of muscle, and is currently widely used.
  • a typical muscle activity sensor which can measure the activity of muscle, chiefly employs a myoelectric sensor, which can detect Electromyogram (EMG) signals.
  • EGM Electromyogram
  • the muscle activity sensor measures the activity of muscle when the myoelectric sensor is attached to a portion of the arms or legs of a human body and detects EGM signals which are generated in a manner that varies with the degree of contraction of the muscle.
  • the EGM signals are electrical signals that are generated along the muscle fiber from the surface of muscle according to motion of the human body, and are widely used for HCI technology because they are more easily detected than other biological signals, such as Electroencephalogram (EEG) signals or electrooculogram (EOG) signals.
  • the above-described myoelectric sensor is problematic in that error attributable to noise is easily generated because the generated electrical signals are weak and it is thus very sensitive to various kinds of noise, and in that a separate amplifying device for amplifying the weak electrical signals is required for actual application to a device. Furthermore, the above-described myoelectric sensor is problematic in that it is difficult to acquire the same signal values under the same conditions, in particular, because the generation of EGM signals is lowered when exercise is conducted for a long time due to the characteristics of the human body, and in that the electrical signal values are affected greatly by the state of the skin because the electrical signals are detected through the skin. Accordingly, the muscle activity sensor using a myoelectric sensor cannot accurately measure the activity of muscle due to the problems with the myoelectric sensor.
  • an object of the present invention is to provide a hardness sensor, which can easily measure the hardness of a test target using a buffering member and two pressure sensors regardless of the amount of pressure that is applied, and is also to provide a muscle activity sensor, which enables the hardness of muscle to be measured using the hardness sensor and, at the same time, enables EGM signals to be measured at a single position on a human body using a myoelectric sensor, thus accurately measuring the activity of muscle.
  • the present invention provides a hardness sensor, including: a button configured to come into contact with a test target; an upper plate configured such that one surface thereof is coupled with the button so as to enable pressure to be transmitted therebetween; a lower plate coupled with the remaining surface of the upper plate so as to enable the pressure to be transmitted therebetween; a buffering member provided between the upper and lower plates to be elastically deformable and to buffer the pressure between the upper and lower plates; a first pressure sensor for measuring the pressure that is applied between the button and the upper plate; and a second pressure sensor for measuring the pressure, which is buffered and is applied between upper and lower plates; wherein the hardness of the test target is measured using the ratio of pressures measured by the first and second pressure sensors.
  • the present invention provides a muscle activity sensor, including: the hardness sensor; and a myoelectric sensor attached to an end of a button and configured to detect EGM signals; wherein the hardness of muscle, which is detected by the hardness sensor, and EGM signals, which are detected by the myoelectric sensor, are simultaneously measured at an identical point to measure the activity of muscle.
  • EGM signals and the hardness of muscle are simultaneously measured from the same position on a human body using both the myoelectric sensor, which can detect EGM signals, and the hardness sensor, which can measure the hardness of muscle, so that the activity of muscle can be accurately measured.
  • the buffering member and the two pressure sensors are used, and thus the hardness of a test target can be easily measured regardless of the amount of pressure that is applied.
  • FIG. 1 is a schematic exploded perspective view showing a hardness sensor according to an embodiment of the present invention
  • FIG. 2 is schematic sectional views showing the assembly structure of a second pressure sensor according to an embodiment of the present invention
  • FIG. 3 is a schematic exploded perspective view showing a muscle activity sensor according to an embodiment of the present invention
  • FIG. 4 is a longitudinal sectional view of the muscle activity sensor of FIG. 3.
  • FIG. 1 is a schematic exploded perspective view showing a hardness sensor according to an embodiment of the present invention
  • FIG. 2 is schematic sectional views showing the assembly structure of a second pressure sensor according to an embodiment.
  • the hardness sensor according to the embodiment of the present invention includes a button 10, which is configured to come into contact with the surface of a test target, the hardness of which will be measured, upper and lower plates 20 and 30, a buffering member 40, which is elastically deformable, and first and second pressure sensors 50 and 60.
  • the button 10 is configured such that one end thereof comes into contact with the surface of the test target, and the other end thereof is coupled to one surface of the upper plate 20.
  • the button 10 and the upper plate 20 are coupled such that pressure can be mutually transmitted therebetween.
  • the first pressure sensor 50 is inserted between the button 10 and the upper plate 20 to measure the pressure that is applied between the button 10 and the upper plate 20.
  • the buffering member 40 which is elastically deformed by pressure, is provided between the upper and lower plates 20 and 30.
  • the upper and lower plates 20 and 30 are coupled to each other by the buffering member 40, which is interposed therebetween so that the pressure that is applied between the upper and lower plates 20 and 30 can be mutually transmitted to the upper and lower plates 20 and 30 via the buffering member 40.
  • the buffering member 40 is made of elastically deformable material, and functions to buffer the pressure that is applied between the upper and lower plates 20 and 30. Furthermore, the second pressure sensor 60 is provided at a predetermined location between the upper and lower plates 20 and 30 to measure the pressure that is applied between the upper and lower plates 20 and 30. In this case, the pressure that is applied between the upper and lower plates 20 and 30, which is measured by the second pressure sensor 60, corresponds to the pressure that is applied therebetween after being buffered by the buffering member 40.
  • the hardness sensor according to the present invention enables the hardness of the test target to be measured using a ratio of the pressures that are measured by the first and second pressure sensors 50 and 60.
  • the hardness sensor according to the present invention may be very usefully used to measure the hardness of soft material, such as rubber or silicon, rather than to measure the hardness of hard material, such as metal, and is very suitable for measuring the hardness of muscle at a predetermined position on a human body.
  • a typical hardness measuring device for measuring the hardness of soft material is based on a method of using a spring gauge, and measures the hardness of the test target in such a way as to bring a probe into contact with the surface of the test target, press the surface at a predetermined pressure, and measure the amount of compression of the spring of the spring gauge.
  • control is performed such that the pressure applied to the probe over the test target can be maintained constant, or a separate control device or pressure measurement device is provided to measure the magnitude of the pressure.
  • the hardness sensor according to the present invention is configured such that the hardness of the test target can be measure using a ratio of pressures, which are measured by the first and second pressure sensors 50 and 60, without requiring that the pressure applied to the button 10, which comes into contact with the test target, be maintained constant.
  • the presses that are measured by the first and second pressure sensors 50 and 60 are mutually affected by an interaction attributable to the structure of the present invention, so that the present invention is configured to measure the hardness of the test target using the ratio of the pressures measured by the pressure sensors 50 and 60.
  • the hardness sensor according to the present invention can precisely measure the hardness using the ratio of the pressures measured by the first and second pressure sensors 50 and 60, even when the pressure that is applied to the outer surface of the lower plate 30 varies rather than remaining constant. Furthermore, the hardness may be still more precisely measured if the ratio of the pressures that are measured by the first and second pressure sensors 50 and 60 for a specific test target is charted for use thereof.
  • the hardness sensor according to the present invention it is not necessary to maintain the applied pressure constant, so that a separate control device is not required and, in addition, the hardness can be easily measured. Furthermore, even when the upper and lower plates 20 and 30 are not maintained parallel to each other, that is, the direction of the applied pressure is not perpendicular to the outer surface of the lower plate 30, the pressure can be precisely measured because the buffering member 40 is provided between the upper and lower plates 20 and 30 to compensate for variation in the pressure using buffering.
  • the buffering member 40 according to an embodiment of the present invention be formed by charging gaseous material or semi-solid material in an elastically deformable membrane at a predetermined pressure so as to be sensitively elastically deformed by pressure. Furthermore, as shown in FIGS. 1 and 2, the buffering member 40 is formed to have a ring shape, and forms a concentric circle together with the upper and lower plates 20 and 30, and thus it is possible to dispose the buffering member 40 between the upper and lower plates 20 and 30.
  • the second pressure sensor 60 may be attached to any of various predetermined positions between the upper and lower plates 20 and 30 to measure the pressure that is buffered by buffering member 40, which is located between the upper and lower plates 20 and 30, and is applied therebetween.
  • the second pressure sensor 60 may be inserted and mounted between the buffering member 40 and the lower plate 30 to measure the pressure that is transmitted between the lower plate 30 and the buffering member 40. Furthermore, the second pressure sensor 60 may be inserted between the upper plate 20 and the buffering member 40.
  • the second pressure sensor 60 may be inserted and located in the buffering member 40 to measure the variation of pressure in the buffering member 40 attributable to variation in the pressure that is applied to the outer surface of the lower plate 30.
  • the respective surfaces of the buffering member 40 may be airtightly coupled to the upper and lower plates 20 and 30 so that a pressure measurement space 41 is formed in the central portion of the buffering member 40.
  • the second pressure sensor 60 may be provided at a predetermined location in the pressure measurement space 41 to measure the variation of pressure in the pressure measurement space 41, which is caused when the interval between the upper and lower plates 20 and 30 is varied by variation in the pressure that is applied to the outer surface of the lower plate 30.
  • the above-described hardness sensor is useful to measure the hardness of soft material, and can easily measure the hardness regardless of the amount of pressure that is applied.
  • a muscle activity sensor having a structure in which the hardness sensor and a separate myoelectric sensor are coupled to each other is described below.
  • FIG. 3 is a schematic exploded perspective view showing a muscle activity sensor according to an embodiment of the present invention
  • FIG. 4 is a longitudinal sectional view of the muscle activity sensor of FIG. 3.
  • the muscle activity sensor shown in FIGS. 3 and 4 is a sensor that is configured such that a myoelectric sensor 70 is attached to the hardness sensor, shown in FIGS. 1 and 2, thus enabling the activity of muscle at a single position on the human body to be measured by simultaneously measuring both the hardness of muscle and EGM signals.
  • the hardness sensor shown in FIGS. 1 and 2 is very suitable for measuring the hardness of muscle at a predetermined position on the human body, as described above.
  • the muscle activity sensor according to the embodiment of the present invention is configured such that the myoelectric sensor 70 for detecting EGM signals is attached to one end of the button 10 of the hardness sensor to simultaneously measure both the hardness of muscle and the EGM signals.
  • a plurality of myoelectric sensors may be attached to the upper surface of the upper plate 20.
  • the muscle activity sensor having the above-described structure can easily measure the hardness of muscle at a predetermined position on the human body and, at the same time, can measure EGM signals at the same position, so that the activity of muscle can be precisely measured.
  • the muscle activity sensor is attached to a predetermined position on the human body, that is, a position on the arms, legs or the like, using a band that covers the outer surface of the lower plate 30.
  • the pressure that is applied to the outer surface of the lower plate 30 may vary according to the pressing force that is generated when the band covering the outer surface of the lower plate 30 is worn.
  • the muscle activity sensor according to the present invention can precisely measure the hardness of muscle using the operational principle of the hardness sensor as described herein. Furthermore, the muscle activity sensor can precisely measure the hardness of muscle even when the pressing force of the band varies according to the expansion and contraction of muscle in the state in which the band is worn, and thus the pressure that is applied to the outer surface of the lower plate 30 varies.
  • the muscle activity sensor according to the present invention is a sensor that measures the EGM signals, which are generated when muscle is expanded and contracted while conducting exercise and, at the same time, measures the hardness of muscle, thus precisely measuring the activity of muscle. Accordingly, the muscle activity sensor may be applied to various devices based on HCI technology, such as medical equipment, sports equipment, and robot control input devices.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Rheumatology (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

Cette invention se rapporte à un détecteur de raideur. Le détecteur de raideur comprend un bouton, une plaque supérieure, une plaque inférieure, un élément amortisseur, un premier capteur de pression et un second capteur de pression. Le bouton est configuré pour toucher une cible à étudier. La plaque supérieure est configurée de manière à ce qu'une surface de celle-ci soit couplée avec le bouton en vue d'activer une pression à transmettre entre ces deux éléments. La plaque inférieure est couplée avec le reste de la surface de la plaque supérieure en vue d'activer la pression à transmettre entre ces deux éléments. L'élément amortisseur est situé entre la plaque supérieure et la plaque inférieure, il est élastiquement déformable et module la pression entre la plaque supérieure et la plaque inférieure. Le premier capteur de pression mesure la pression qui est appliquée entre le bouton et la plaque supérieure. Le second capteur de pression mesure une pression, qui est modulée et qui est appliquée entre la plaque supérieure et la plaque inférieure.
PCT/KR2008/000831 2007-02-27 2008-02-13 Détecteur de raideur et détecteur d'activité musculaire équipé dudit détecteur de raideur WO2008105590A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0019459 2007-02-27
KR1020070019459A KR100867078B1 (ko) 2007-02-27 2007-02-27 경도측정센서 및 이를 이용한 근활성도측정센서

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WO2008105590A1 true WO2008105590A1 (fr) 2008-09-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012005701A3 (fr) * 2010-07-07 2012-02-23 Tmg-Bmc D.O.O. Procédé et dispositif de détermination non invasive et sélective des propriétés biomécaniques, contractiles et viscoélastiques de muscles squelettiques superficiels
CN106037767A (zh) * 2016-05-11 2016-10-26 苏州海神联合医疗器械有限公司 握力和肌电检测装置
CN113288151A (zh) * 2021-05-14 2021-08-24 中国科学院合肥物质科学研究院 一种可感知肌肉硬度的柔性力传感器及肌肉硬度的检测方法
CN114848315A (zh) * 2022-05-05 2022-08-05 广东工业大学 一种基于表面肌电信号的智能轮椅人机协同控制系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101055323B1 (ko) * 2009-07-16 2011-08-09 한국과학기술원 근육 활성화도 측정 시스템, 측정 장치 및 측정 방법
KR101086762B1 (ko) * 2009-12-30 2011-11-25 한성대학교 산학협력단 Ｆｓｒ 센서를 이용한 근육활성도 측정방법 및 근육활성도 측정장치
KR101675577B1 (ko) * 2016-05-03 2016-11-14 엘아이지넥스원 주식회사 근경도 센서 모듈
KR102610019B1 (ko) * 2023-01-16 2023-12-06 주식회사 뷰텔 압력 센서를 포함하는 비침습 포도당 측정 장치

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JP2004081576A (ja) * 2002-08-27 2004-03-18 Yaskawa Electric Corp リハビリテーション支援装置
JP2005040474A (ja) * 2003-07-25 2005-02-17 Naganori Sato 硬軟度測定装置及びそれに使用される解析プログラム
KR20060001820A (ko) * 2005-03-24 2006-01-06 경북대학교 산학협력단 체중 부하 및 관절의 각도를 변수로 이용한 하지 재활 훈련장치 및 하지 재활 훈련 방법

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KR100651638B1 (ko) 2005-12-30 2006-12-01 서강대학교산학협력단 지능형 근력 및 보행 보조용 로봇의 허벅지 압력 센서

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004081576A (ja) * 2002-08-27 2004-03-18 Yaskawa Electric Corp リハビリテーション支援装置
JP2005040474A (ja) * 2003-07-25 2005-02-17 Naganori Sato 硬軟度測定装置及びそれに使用される解析プログラム
KR20060001820A (ko) * 2005-03-24 2006-01-06 경북대학교 산학협력단 체중 부하 및 관절의 각도를 변수로 이용한 하지 재활 훈련장치 및 하지 재활 훈련 방법

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012005701A3 (fr) * 2010-07-07 2012-02-23 Tmg-Bmc D.O.O. Procédé et dispositif de détermination non invasive et sélective des propriétés biomécaniques, contractiles et viscoélastiques de muscles squelettiques superficiels
CN103124518A (zh) * 2010-07-07 2013-05-29 Tmg-Bmc公司 用于无创地且选择性地测定表面骨骼肌的生物力学、收缩和粘弹性特性的方法和装置
JP2013529539A (ja) * 2010-07-07 2013-07-22 ティーエムジー−ビーエムシー ディー．オー．オー． 骨格筋表面の生体力学的特性、収縮特性および粘弾性特性の非侵襲的かつ選択的な測定のための方法および装置
CN106037767A (zh) * 2016-05-11 2016-10-26 苏州海神联合医疗器械有限公司 握力和肌电检测装置
CN113288151A (zh) * 2021-05-14 2021-08-24 中国科学院合肥物质科学研究院 一种可感知肌肉硬度的柔性力传感器及肌肉硬度的检测方法
CN114848315A (zh) * 2022-05-05 2022-08-05 广东工业大学 一种基于表面肌电信号的智能轮椅人机协同控制系统
CN114848315B (zh) * 2022-05-05 2022-12-13 广东工业大学 一种基于表面肌电信号的智能轮椅人机协同控制系统

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