EP1729642A1 - Procede et dispositif de determination des mouvements d'une personne - Google Patents
Procede et dispositif de determination des mouvements d'une personneInfo
- Publication number
- EP1729642A1 EP1729642A1 EP05739696A EP05739696A EP1729642A1 EP 1729642 A1 EP1729642 A1 EP 1729642A1 EP 05739696 A EP05739696 A EP 05739696A EP 05739696 A EP05739696 A EP 05739696A EP 1729642 A1 EP1729642 A1 EP 1729642A1
- Authority
- EP
- European Patent Office
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000033001 locomotion Effects 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000036544 posture Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 210000002784 stomach Anatomy 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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.
Landscapes
- 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
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. |
| PCT/FR2005/050201 WO2005094676A1 (fr) | 2004-03-30 | 2005-03-30 | Procede et dispositif de determination des mouvements d'une personne |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1729642A1 true EP1729642A1 (fr) | 2006-12-13 |
Family
ID=34944358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05739696A Ceased EP1729642A1 (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) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8956421B2 (en) | 2007-02-06 | 2015-02-17 | Deka Products Limited Partnership | Dynamic support apparatus and system |
| US8074559B2 (en) | 2007-02-06 | 2011-12-13 | Deka Products Limited Partnership | Dynamic support apparatus and system |
| US7182738B2 (en) | 2003-04-23 | 2007-02-27 | Marctec, Llc | Patient monitoring apparatus and method for orthosis and other devices |
| US7219033B2 (en) * | 2005-02-15 | 2007-05-15 | Magneto Inertial Sensing Technology, Inc. | Single/multiple axes six degrees of freedom (6 DOF) inertial motion capture system with initial orientation determination capability |
| FR2896896B1 (fr) * | 2006-02-02 | 2009-09-25 | Commissariat Energie Atomique | Procede de classification d'evenements ou d'etats en deux etapes |
| ATE414470T1 (de) * | 2006-03-17 | 2008-12-15 | Myotest Sa | Vorrichtung und verfahren zur auswertung der muskularischen kapazität unter verwendung von kurzen tests |
| US8870970B2 (en) | 2007-02-06 | 2014-10-28 | Deka Products Limited Partnership | Dynamic support apparatus |
| US11779476B2 (en) | 2007-02-06 | 2023-10-10 | Deka Products Limited Partnership | Arm prosthetic device |
| US9381099B2 (en) | 2007-02-06 | 2016-07-05 | Deka Products Limited Partnership | Arm prosthetic device |
| US8821587B2 (en) | 2007-02-06 | 2014-09-02 | Deka Products Limited Partnership | Apparatus for control of a prosthetic |
| US8864845B2 (en) * | 2007-02-06 | 2014-10-21 | DEKA Limited Partnership | System for control of a prosthetic device |
| US8449624B2 (en) * | 2007-02-06 | 2013-05-28 | Deka Products Limited Partnership | Arm prosthetic device |
| US10426638B2 (en) | 2007-02-06 | 2019-10-01 | Deka Products Limited Partnership | Arm prosthetic device |
| CA2679633C (fr) | 2007-02-06 | 2017-07-11 | Christopher C. Langenfeld | Prothese de bras |
| US9114030B2 (en) | 2007-02-06 | 2015-08-25 | Deka Products Limited Partnership | System for control of a prosthetic device |
| US8979943B2 (en) | 2007-02-06 | 2015-03-17 | Deka Products Limited Partnership | Arm prosthetic device |
| HUP0700485A3 (en) | 2007-07-23 | 2010-01-28 | Richter Gedeon Nyrt | Pharmaceutical composition with controlled release containing tolperisone |
| FR2919406B1 (fr) | 2007-07-23 | 2009-10-23 | Commissariat Energie Atomique | Procede et dispositif de reconnaissance de position ou de mouvement d'un dispositif ou d'un etre vivant. |
| WO2010009531A1 (fr) | 2008-07-23 | 2010-01-28 | Atreo Medical, Inc. | Dispositif d'assistance à la réanimation cardio-respiratoire permettant de mesurer les paramètres de compression durant la réanimation cardio-respiratoire |
| CA2761806C (fr) * | 2009-04-13 | 2017-08-15 | Deka Products Limited Partnership | Systeme et appareil pour commande d'orientation |
| 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 |
| 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 |
| CA2814834A1 (fr) * | 2011-06-10 | 2012-12-13 | Aliphcom | Analyse vectorielle spatiale et temporelle dans des dispositifs aptes a etre portes utilisant des donnees de capteur |
| 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 |
| US10602965B2 (en) | 2013-09-17 | 2020-03-31 | Medibotics | Wearable deformable conductive sensors for human motion capture including trans-joint pitch, yaw, and roll |
| US9588582B2 (en) | 2013-09-17 | 2017-03-07 | Medibotics Llc | Motion recognition clothing (TM) with two different sets of tubes spanning a body joint |
| US9582072B2 (en) | 2013-09-17 | 2017-02-28 | Medibotics Llc | Motion recognition clothing [TM] with flexible electromagnetic, light, or sonic energy pathways |
| US10716510B2 (en) | 2013-09-17 | 2020-07-21 | Medibotics | Smart clothing with converging/diverging bend or stretch sensors for measuring body motion or configuration |
| US10321873B2 (en) | 2013-09-17 | 2019-06-18 | Medibotics Llc | Smart clothing for ambulatory human motion capture |
| 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 |
| EP3364150B1 (fr) * | 2015-10-14 | 2024-04-24 | Alps Alpine Co., Ltd. | 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. |
| BR112018071163A8 (pt) * | 2016-04-13 | 2023-03-14 | Strong Arm Tech Inc | Sistemas e dispositivos para rastreamento de movimento, avaliação e monitoramento e seus métodos de uso |
| 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 |
| US10571285B2 (en) * | 2017-04-17 | 2020-02-25 | Ford Global Technologies, Llc | Vehicle route control |
| GB2574074B (en) | 2018-07-27 | 2020-05-20 | Mclaren Applied Tech Ltd | Time synchronisation |
| US20200121878A1 (en) * | 2018-10-19 | 2020-04-23 | Lionel Newman, JR. | Nose to tragus length based (ntlb) tape |
| GB2588236B (en) | 2019-10-18 | 2024-03-20 | Mclaren Applied Ltd | Gyroscope bias estimation |
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| FR2673711B1 (fr) * | 1991-03-07 | 1995-09-15 | Aerospatiale | Procede et systeme d'harmonisation autonome d'equipements a bord d'un vehicule, utilisant des moyens de mesure du champ de gravite terrestre. |
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| FR2838185B1 (fr) * | 2002-04-05 | 2004-08-06 | Commissariat Energie Atomique | Dispositif de capture des mouvements de rotation d'un solide |
| JP4214259B2 (ja) * | 2002-08-27 | 2009-01-28 | 学校法人日本大学 | 人の動作状態監視方法および装置 |
| JP2004264060A (ja) * | 2003-02-14 | 2004-09-24 | Akebono Brake Ind Co Ltd | 姿勢の検出装置における誤差補正方法及びそれを利用した動作計測装置 |
| DE10312154B4 (de) * | 2003-03-17 | 2007-05-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zum Ausführen einer Objektverfolgung |
| KR100486739B1 (ko) * | 2003-06-27 | 2005-05-03 | 삼성전자주식회사 | 착용형 휴대폰 및 그 사용방법 |
-
2004
- 2004-03-30 FR FR0450619A patent/FR2868281B1/fr not_active Expired - Lifetime
-
2005
- 2005-03-30 WO PCT/FR2005/050201 patent/WO2005094676A1/fr not_active Ceased
- 2005-03-30 JP JP2007505603A patent/JP5399630B2/ja not_active Expired - Fee Related
- 2005-03-30 EP EP05739696A patent/EP1729642A1/fr not_active Ceased
- 2005-03-30 US US10/592,799 patent/US7661200B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005094676A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2868281B1 (fr) | 2023-06-23 |
| WO2005094676A1 (fr) | 2005-10-13 |
| JP5399630B2 (ja) | 2014-01-29 |
| US20070186429A1 (en) | 2007-08-16 |
| US7661200B2 (en) | 2010-02-16 |
| JP2007530966A (ja) | 2007-11-01 |
| FR2868281A1 (fr) | 2005-10-07 |
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