WO2005094676A1 - Procede et dispositif de determination des mouvements d'une personne - Google Patents
Procede et dispositif de determination des mouvements d'une personne Download PDFInfo
- Publication number
- WO2005094676A1 WO2005094676A1 PCT/FR2005/050201 FR2005050201W WO2005094676A1 WO 2005094676 A1 WO2005094676 A1 WO 2005094676A1 FR 2005050201 W FR2005050201 W FR 2005050201W WO 2005094676 A1 WO2005094676 A1 WO 2005094676A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- person
- angles
- orientation
- fixed reference
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
- A61B5/1116—Determining posture transitions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
-
- 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
- A61B2562/0219—Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
Definitions
- the subject of this invention is a method and a device for determining the movements of a person.
- the applications of such processes for the purpose of surveillance or monitoring of an activity are numerous.
- One of them, important for the invention even if it is not limiting, is the monitoring of patients. It is therefore important not only to have the situation in a person's space, but also indications concerning their posture or even their activity or physiological state to help detect a state of danger and to intervene with less risk. worthlessness.
- Surveillance is carried out by a sensor linked to the person (which will also be called “the carrier” in this text), often stuck to the chest. It often includes acceleration sensors whose integration of signals gives the position of the person or physiological indications such as breathing or heartbeat.
- French Patent 2,838,185 describes a method for determining the orientation of a sensor that can be placed on a solid and in particular on a person, estimated by so-called angles of pitch, roll, and yaw, measured from a fixed benchmark.
- the sensor includes magnetometers and accelerometers. It is therefore natural to use a fixed reference point comprising an axis directed towards the local magnetic North, an axis directed towards the magnetic East and a third axis directed towards the ground.
- the method for estimating the orientation of the sensor comprises a mathematical optimization converging on the orientation measured. We introduce a mobile reference linked to the sensor.
- the sensor provides at all times the measurement of the magnetic field and the gravitational field in the moving frame. We then look for a rotation giving this measurement according to the value of the magnetic field expressed in the fixed frame. This rotation can be expressed in a composition of three elementary rotations of Euler angles, such as those of roll, pitch and yaw to reach the sensor measurements. This process is repeated endlessly at small intervals of time.
- the disadvantages of such a method are that the interpretation of the results to deduce the behavior of the wearer of the sensor is not easy.
- the sensor is generally placed by the same person who wears it, with uncertainty about a desired orientation, which makes the interpretation of the orientation results even more difficult.
- the invention is based on the observation that the deviations in orientation of the main axes of the sensor with respect to the natural axes of the carrier person are essentially responsible for the difficulties in interpreting the results, even if such deviations are inevitable in practice.
- the new angles that the sensor will provide will be associated with physical postures of the pointer rather than with orientations of the sensor itself. They will express the person's lateral tilt, their longitudinal tilt and a direction to which the person is facing. This will make it easier to determine the type of activity of the wearer.
- FIG. 1 illustrates the position of the sensor on the carrier person
- FIG. 2 the sensor as a whole
- FIG. 3 the processing system
- FIG. 6 a flowchart.
- Figure 1 shows that the sensor, bearing the reference 2, is placed on the chest of a wearer 1. It could be placed on the abdomen or in other places.
- the sensor 2 is miniature, which allows it to be worn with comfort.
- the axes X 0 , Yo and Z 0 define a fixed reference frame R Q and are directed towards magnetic North, magnetic East and the ground; X 0 and Yo are by definition horizontal and Z 0 vertical.
- Another mark R 2 is linked to the sensor 2, the axis X 2 being directed towards the front of the wearer, the axis Z 2 towards the feet and the axis Y 2 towards its right.
- the known method leads to measure the angles bringing the fixed reference R 0 to the reference linked to the sensor R 2 by a rotation around the axis Zo of a yaw angle, then by a rotation around the axis Yo (moved by the yaw rotation ) a pitch angle, then by a rotation around the Xo axis (also moved) by a roll angle.
- the sensor 2 can comprise a housing 3 containing three accelerometers all bearing the reference 4, three magnetometers all bearing the reference 5 and a processing system 6 to which accelerometers 4 and magnetometers 5 s have connected by wires so as to supply their signals.
- the accelerometers 4 each measure a component of acceleration of the movement of the chest of the wearer 1 in one of the axes X 2 , Y 2 and Z 2 respectively as a function of the direction of gravity; the magnetometers 5 do the same as a function of the direction of the earth's magnetic field.
- the sensor 2 is held in a constant orientation against the skin or a coat of the wearer 1 by glue, a seam, a tightening band, or any suitable means.
- a second calculation module 9 completes the calculations indicated above pr> our express the positions of axes Xi, Yi and Zi of another reference frame Ri, linked to carrier 1 and which appears in FIG. 4.
- the axis Xi is directed towards the outside of the chest (towards the front), the axis Yi is in alignment with his shoulders and directed to the right and the axis Z x is in the elongation of the trunk and directed downwards. It should be noted that if the sensor 2 is correctly placed, the respective axes of the references Ri and R 2 are parallel. The invention is fully useful if this condition is not met. Three new angles are then defined to characterize the posture of the wearer 1. Their situation is illustrated by FIGS. 4 and 5.
- the angle ⁇ is defined between the axis of the vertical and the axis Xi directed forward and expresses the inclination of the carrier 1 to within 90 °; it is close to 0 in a straight station, + 90 ° to the elongation on the stomach and -90 ° to the elongation on the back.
- the lateral tilt angle or twist angle ⁇ is defined as the angle between the lateral axis Yi and the horizontal to within 90 °; it is equal to 90 ° if the carrier is standing straight or if, for example, he is leaning forward, less than 90 ° if the person is leaning to the right and greater than 90 ° if he is leaning towards the left.
- the flow diagram of FIG. 6 represents the calculations undertaken in the processing system 6 in accordance with the invention.
- the first calculation module 8 gives the usual angles of orientation of the sensor 2 relative to the fixed reference mark using a processor 10 which combines the measurements of the magnetometers and of the accelerometers with each other. These calculations are repeated regularly to follow the movements of the carrier.
- the results are transmitted to the second calculation module 9 which contains a second processor 12 and a calibration memory 11.
- This second calculation module 9 makes it possible to go from the reference linked to the sensor R 2 to the reference linked to the person carrier Ri and makes an estimate of the angles separating these marks, which is particularly important if the sensor is attached to the person with its main axes very different from the main axes of the person. It is assumed that the wearer attaches the sensor 2 to his chest and that the sensor 2 then no longer moves so that the references Ri and R 2 are in an invariable relative position. Person 1 is asked to stand straight, for example against a wall, for one or two seconds, or possibly to lie on the ground in a known direction.
- the orientation of the reference frame linked to the person Ri with respect to the fixed reference frame Ro is then perfectly known, and preliminary measurements undertaken with the sensor 2 give the orientation of the reference frame linked to the sensor R 2 (X 2 , Y 2 , Z 2 ) in the fixed reference frame R 0 (Xo, Yo, Z 0 ).
- This difference in orientation (which can be expressed in the form of three angles) of rotation applied successively, as between Ro and Ri as mentioned above, is used as a correction for all subsequent measurements.
- the second orientation sensor is linked to a part such as a straight edge, preferably with a main measurement axis in the direction of the ruler.
- the carrier person 1 being in a stable posture, sitting for example, the rule is placed on certain selected places of the body to deduce therefrom the position of the anatomical axes of the reference frame linked to the person Ri at this time in the fixed reference frame Ro. These places for placing the ruler can be the top of the spine (the ruler being vertical) and the axis of the shoulders (the ruler being horizontal).
- the orientation of the sensor 2 relative to the person 1 who wears it can be deduced by having the measurements of the sensor 2 at this time and their comparison with those of the other sensor. This calibration process can give better results than the previous one.
- the invention can be used with all kinds of known sensors, including various combinations of magnetometers, accelerometers, gyrometers or other means; it can complement methods where the orientation of the sensor is represented by quaternions known to those skilled in the art rather than by Euler angles.
- Clinical trials have demonstrated that the process according to the invention allows convenient interpretations of the usual movements of patients and a change in posture between standing, sitting and lying down. A remarkable application of the process will probably be equilibrium analysis: tests have shown that it provides results sensitive to the conditions of equilibrium and disturbances, originating from posture or external elements, and that it therefore made it possible to recognize or even to distinguish some of these disturbances.
- the movements to restore balance can be precisely measured and analyzed.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Dentistry (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/592,799 US7661200B2 (en) | 2004-03-30 | 2005-03-30 | Method and device for determining a person's motions |
| JP2007505603A JP5399630B2 (ja) | 2004-03-30 | 2005-03-30 | 人の動作を決定する方法及び装置 |
| EP05739696A EP1729642A1 (fr) | 2004-03-30 | 2005-03-30 | Procede et dispositif de determination des mouvements d'une personne |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0450619A FR2868281B1 (fr) | 2004-03-30 | 2004-03-30 | Procede de determination des mouvements d'une personne. |
| FR0450619 | 2004-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005094676A1 true WO2005094676A1 (fr) | 2005-10-13 |
Family
ID=34944358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2005/050201 Ceased WO2005094676A1 (fr) | 2004-03-30 | 2005-03-30 | Procede et dispositif de determination des mouvements d'une personne |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7661200B2 (fr) |
| EP (1) | EP1729642A1 (fr) |
| JP (1) | JP5399630B2 (fr) |
| FR (1) | FR2868281B1 (fr) |
| WO (1) | WO2005094676A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2896896A1 (fr) * | 2006-02-02 | 2007-08-03 | Commissariat Energie Atomique | Procede de classification d'evenements ou d'etats en deux etapes |
| JP2008529727A (ja) * | 2005-02-15 | 2008-08-07 | マグネットー・イナーシャル・センシング・テクノロジー・インコーポレイテッド | 慣性方位決定能力を有する単軸/多軸の6つの自由度(dof)の慣性運動捕捉システム |
| WO2009013552A1 (fr) | 2007-07-23 | 2009-01-29 | Richter Gedeon Nyrt. | Composition pharmaceutique à libération contrôlée de chlorhydrate de tolpérison |
| FR2919406A1 (fr) * | 2007-07-23 | 2009-01-30 | Commissariat Energie Atomique | Procede et dispositif de reconnaissance de position ou de mouvement d'un dispositif ou d'un etre vivant. |
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| US8956421B2 (en) | 2007-02-06 | 2015-02-17 | Deka Products Limited Partnership | Dynamic support apparatus and system |
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| US7182738B2 (en) | 2003-04-23 | 2007-02-27 | Marctec, Llc | Patient monitoring apparatus and method for orthosis and other devices |
| DE602006003720D1 (de) * | 2006-03-17 | 2009-01-02 | Myotest S A | Vorrichtung und Verfahren zur Auswertung der muskularischen Kapazität unter Verwendung von kurzen Tests |
| US9381099B2 (en) | 2007-02-06 | 2016-07-05 | Deka Products Limited Partnership | Arm prosthetic device |
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| US10426638B2 (en) | 2007-02-06 | 2019-10-01 | Deka Products Limited Partnership | Arm prosthetic device |
| US8864845B2 (en) * | 2007-02-06 | 2014-10-21 | DEKA Limited Partnership | System for control of a prosthetic device |
| US11779476B2 (en) | 2007-02-06 | 2023-10-10 | Deka Products Limited Partnership | Arm prosthetic device |
| US8870970B2 (en) | 2007-02-06 | 2014-10-28 | Deka Products Limited Partnership | Dynamic support apparatus |
| US8449624B2 (en) * | 2007-02-06 | 2013-05-28 | Deka Products Limited Partnership | Arm prosthetic device |
| US8979943B2 (en) | 2007-02-06 | 2015-03-17 | Deka Products Limited Partnership | Arm prosthetic device |
| CA2679633C (fr) | 2007-02-06 | 2017-07-11 | Christopher C. Langenfeld | Prothese de bras |
| EP2114316B1 (fr) | 2007-02-06 | 2014-07-16 | DEKA Products Limited Partnership | Procédé et appareil pour la commande d'une prothèse |
| US8453340B2 (en) * | 2007-02-06 | 2013-06-04 | Deka Products Limited Partnership | System, method and apparatus for orientation control |
| US9585603B2 (en) * | 2008-07-23 | 2017-03-07 | Physio-Control Canada Sales Ltd. | CPR assist device for measuring compression parameters during cardiopulmonary resuscitation |
| US8589015B2 (en) * | 2010-02-12 | 2013-11-19 | Webtech Wireless Inc. | Vehicle sensor calibration for determining vehicle dynamics |
| KR101700377B1 (ko) | 2010-10-20 | 2017-01-26 | 삼성전자주식회사 | 아바타 생성을 위한 처리 장치 및 방법 |
| WO2012171033A1 (fr) * | 2011-06-10 | 2012-12-13 | Aliphcom | Analyse vectorielle spatiale et temporelle dans des dispositifs aptes à être portés utilisant des données de capteur |
| US9069380B2 (en) | 2011-06-10 | 2015-06-30 | Aliphcom | Media device, application, and content management using sensory input |
| US8446275B2 (en) | 2011-06-10 | 2013-05-21 | Aliphcom | General health and wellness management method and apparatus for a wellness application using data from a data-capable band |
| US9258670B2 (en) | 2011-06-10 | 2016-02-09 | Aliphcom | Wireless enabled cap for a data-capable device |
| US9128521B2 (en) * | 2011-07-13 | 2015-09-08 | Lumo Bodytech, Inc. | System and method of biomechanical posture detection and feedback including sensor normalization |
| US9153994B2 (en) | 2011-10-14 | 2015-10-06 | Welch Allyn, Inc. | Motion sensitive and capacitor powered handheld device |
| US9588582B2 (en) | 2013-09-17 | 2017-03-07 | Medibotics Llc | Motion recognition clothing (TM) with two different sets of tubes spanning a body joint |
| US10321873B2 (en) | 2013-09-17 | 2019-06-18 | Medibotics Llc | Smart clothing for ambulatory human motion capture |
| US10716510B2 (en) | 2013-09-17 | 2020-07-21 | Medibotics | Smart clothing with converging/diverging bend or stretch sensors for measuring body motion or configuration |
| US10602965B2 (en) | 2013-09-17 | 2020-03-31 | Medibotics | Wearable deformable conductive sensors for human motion capture including trans-joint pitch, yaw, and roll |
| US9582072B2 (en) | 2013-09-17 | 2017-02-28 | Medibotics Llc | Motion recognition clothing [TM] with flexible electromagnetic, light, or sonic energy pathways |
| WO2014035922A2 (fr) * | 2012-08-27 | 2014-03-06 | Cuevas Jose A | Dispositif d'entraînement de posture |
| US9028407B1 (en) | 2013-12-13 | 2015-05-12 | Safer Care LLC | Methods and apparatus for monitoring patient conditions |
| WO2017064972A1 (fr) * | 2015-10-14 | 2017-04-20 | アルプス電気株式会社 | Dispositif portable, procédé pour mesurer son orientation, et programme |
| ITUA20161393A1 (it) * | 2016-03-07 | 2017-09-07 | Flyby S R L | Sistema di rilevazione della esposizione alla radiazione solare di un individuo. |
| CN109640817A (zh) * | 2016-04-13 | 2019-04-16 | 强健手臂技术公司 | 用于运动跟踪、评估和监控的系统和装置及其使用方法 |
| CN106344030A (zh) * | 2016-08-30 | 2017-01-25 | 苏州品诺维新医疗科技有限公司 | 一种姿势矫正方法和装置 |
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- 2005-03-30 JP JP2007505603A patent/JP5399630B2/ja not_active Expired - Fee Related
- 2005-03-30 WO PCT/FR2005/050201 patent/WO2005094676A1/fr not_active Ceased
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008529727A (ja) * | 2005-02-15 | 2008-08-07 | マグネットー・イナーシャル・センシング・テクノロジー・インコーポレイテッド | 慣性方位決定能力を有する単軸/多軸の6つの自由度(dof)の慣性運動捕捉システム |
| FR2896896A1 (fr) * | 2006-02-02 | 2007-08-03 | Commissariat Energie Atomique | Procede de classification d'evenements ou d'etats en deux etapes |
| WO2007088205A1 (fr) * | 2006-02-02 | 2007-08-09 | Commissariat A L'energie Atomique | Procede d'identification de postures d'une personne |
| US9026477B2 (en) | 2006-02-02 | 2015-05-05 | Commissariat A L'energie Atomique | Method for identifying a person's posture |
| WO2009013552A1 (fr) | 2007-07-23 | 2009-01-29 | Richter Gedeon Nyrt. | Composition pharmaceutique à libération contrôlée de chlorhydrate de tolpérison |
| FR2919406A1 (fr) * | 2007-07-23 | 2009-01-30 | Commissariat Energie Atomique | Procede et dispositif de reconnaissance de position ou de mouvement d'un dispositif ou d'un etre vivant. |
| EP2023268A1 (fr) * | 2007-07-23 | 2009-02-11 | Commissariat à l'Energie Atomique | Procédé et dispositif de reconnaissance de position ou de mouvement d'un dispositif ou d'un être vivant |
| US8301575B2 (en) | 2007-07-23 | 2012-10-30 | Commissariat A L'energie Atomique | Method and device for the recognition of the position or movement of a device or a person |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070186429A1 (en) | 2007-08-16 |
| JP2007530966A (ja) | 2007-11-01 |
| US7661200B2 (en) | 2010-02-16 |
| FR2868281A1 (fr) | 2005-10-07 |
| FR2868281B1 (fr) | 2023-06-23 |
| JP5399630B2 (ja) | 2014-01-29 |
| EP1729642A1 (fr) | 2006-12-13 |
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