WO2008072168A1 - Dispositif de surveillance avec au moins un détecteur - Google Patents

Dispositif de surveillance avec au moins un détecteur Download PDF

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Publication number
WO2008072168A1
WO2008072168A1 PCT/IB2007/054997 IB2007054997W WO2008072168A1 WO 2008072168 A1 WO2008072168 A1 WO 2008072168A1 IB 2007054997 W IB2007054997 W IB 2007054997W WO 2008072168 A1 WO2008072168 A1 WO 2008072168A1
Authority
WO
WIPO (PCT)
Prior art keywords
monitoring device
condition
state
sensor
stand
Prior art date
Application number
PCT/IB2007/054997
Other languages
English (en)
Inventor
Gerd Lanfermann
Edwin G. J. M. Bongers
Juergen Te Vrugt
Richard D. Willmann
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N.V.
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 Philips Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N.V. filed Critical Philips Intellectual Property & Standards Gmbh
Publication of WO2008072168A1 publication Critical patent/WO2008072168A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
    • A61B5/0008—Temperature signals
    • 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
    • A61B2560/0204—Operational features of power management
    • A61B2560/0209—Operational features of power management adapted for power saving
    • 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
    • A61B2560/0242—Operational features adapted to measure environmental factors, e.g. temperature, pollution
    • 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 present invention relates to a monitoring device, comprising at least one sensor for detecting a condition of the monitoring device, a method for switching a monitoring device between a stand-by state and an active state and a tele-rehabilitation system with a body-worn monitoring device.
  • Stroke is the third leading cause of death in the western world and the most prominent cause for permanent disabilities.
  • the incidence in the United States is 700.000 per year, with a tendency to increase according to the ageing of society.
  • Rehabilitation of stroke victims or traumatic brain injury victims is among others aimed at restoring the functional use of limbs, in order to restore the ability to manage activities of daily living.
  • the use of a disabled limb is the best approach to achieve rehabilitation success.
  • Tele-rehabilitation technology includes a wireless inertial sensor for motion tracking.
  • Power consumption is one of the main research items in wireless sensor devices and increasing IC integration has lead to a decrease in size and power consumption of wireless devices.
  • wearable sensors it is not only important to keep the power consumption low, but also to minimise the size of the device to allow for unobtrusive use, as well as for integration into clothing.
  • a system for real-time physiological monitoring is known from WO 2006/009830 A2.
  • the battery and mechanical components like switches are the key obstacles in the miniaturisation process.
  • To get the maximum lifetime of the battery it is important to switch sensors on and off only when they are used, usually through on/off buttons.
  • people will either forget to turn sensors on or they forget to turn them off.
  • the use of a tiny button is problematic.
  • a monitoring device comprising at least one sensor for detecting a condition of the monitoring device, the condition being that the monitoring device is worn by a user, wherein the monitoring device is switchable from a stand-by state to an active state upon detection of the condition.
  • the monitoring device does not comprise a mechanical button, or at least no power on/off switch.
  • the total size of the monitoring device can be reduced.
  • the casing of the monitoring device according to the present invention is more easily sealed in the sense of making it water- or airtight.
  • the monitoring device according to the present invention allows for easier donning and doffing, since no side of the monitoring device needs to remain accessible.
  • the condition, that the monitoring device is worn by a user, in the sense of the present invention, means any condition under which the monitoring device is operable according to its intended application, i.e. for example if a person under physiotherapy has attached the monitoring device on his impaired limb, regardless whether the monitoring device is strapped or taped to the limb, inserted into a pocket or sewn into a piece of clothing.
  • the monitoring device is switchable from the active state to the stand-by state upon detection of an absence of the condition, which prevents unnecessary power consumption after the monitoring device has been put off.
  • the monitoring device comprises a fastener for fixing the monitoring device to a body or a limb of a user.
  • the monitoring device is disconnectably connected to a piece of clothing.
  • the at least one sensor is a temperature sensor. If the temperature sensor detects, for example, a temperature equal or close to a body temperature, the monitoring device is advantageously switched into a full operation mode, automatically. If the temperature falls below a certain threshold the monitoring device is switched back into the stand-by condition, where only the temperature sensor is active.
  • the monitoring device preferably comprises at least one temperature-conducting surface, by which contact is made to a skin or clothing of the user, who is wearing the monitoring device.
  • the at least one sensor is a conductivity sensor. Switching the monitoring device between the stand-by state and the active state is advantageously controlled with regard to a measurement of a skin resistance or conductivity of the user.
  • at least two electrodes are implemented at the monitoring device to detect whether the monitoring device is applied to the skin of the user or not. The skilled artisan will appreciate that this embodiment is advantageously applicable, wherever monitoring devices are placed directly on the skin of the user.
  • the monitoring device comprises at least two sensors for detecting the condition of the monitoring device, the two sensors being adapted to detect different physical values.
  • a combination of two independent sensors provides a more reliable detection of the condition.
  • a preferred combination of a temperature sensor and a conductivity sensor will advantageously avoid a misdetection of the condition upon an increasing temperature which is caused by, for example, solar radiation. Also, a coincidental short-circuiting of a conductivity sensor will not be mistakably detected if the temperature sensor does not detect an increase in temperature at the same time.
  • one of the two sensors is switchable from a stand-by state to an active state upon detection of the condition by the respective other sensor.
  • only one of the two sensors is active in the stand-by state of the monitoring device and only upon the detection of the condition, the second sensor is activated to verify the detection of the condition or to disprove it.
  • the monitoring device further comprises an acceleration sensor.
  • Acceleration sensors are advantageously low in power consumption.
  • the acceleration sensor is advantageously combined with the at least one sensor for detecting the condition of the monitoring device.
  • the combined detection of an acceleration and, for example, a temperature increase or conductivity value provides a reliable detection of the condition.
  • the at least one sensor is switchable from a stand-by state to an active state upon detection of an acceleration by the acceleration sensor, so only the acceleration sensor has to be active and triggers the sensor upon detection of an acceleration.
  • the monitoring device further comprises an indicator for indicating the state of the monitoring device.
  • the user advantageously recognises whether the monitoring device is in the stand-by state or active state by the indicator. Thus, a malfunction of the monitoring device, for example is easily recognised.
  • the indicator is preferably a visual indicator, like an LED.
  • Another object of the present invention is a method for switching a monitoring device between a stand-by state and an active state, comprising the steps of: observing a condition of the monitoring device by detecting at least one physical value indicative of the condition, the condition being that the monitoring device is worn by a user, switching the monitoring device from the stand-by state to the active state upon an occurrence of the condition.
  • the condition of the monitoring device is deductible from objective measurement of at least one physical value.
  • the switching of the monitoring device may thus advantageously be automated.
  • the method further comprises the step of switching the monitoring device from the active state to the stand-by state upon an absence of the condition.
  • the occurrence of the condition is verified in a further step by detecting a further physical value indicative of the condition, in order to minimise misdetections.
  • the at least one physical value is a temperature.
  • the ambient temperature of the monitoring device will rise when it is worn by a user, which advantageously indicates the condition.
  • the at least one physical value is a conductivity. If the monitoring device is positioned on the skin of the user, the skin conductivity is advantageously detectable by, for example, two electrodes.
  • the further physical value is preferably one of a temperature or a conductivity or an acceleration. Any combination of two different of these physical values provides an advantageously reliable detection of the condition. However, even a combination of the three physical values to be detected is possible.
  • the occurrence of the condition is assumed if a temperature above a predefined threshold value is detected, for example above 30 0 C. This embodiment is advantageously easy to implement.
  • the occurrence of the condition is assumed if an alteration in temperature is detected, which alteration exceeds a certain threshold value.
  • This embodiment is advantageously more reliable if the monitoring device is used in different ambient temperatures or if the monitoring device is worn in or on the clothing of the user.
  • the monitoring device may use information on the room temperature to select a threshold, which may be 40% above room temperature.
  • a room temperature of 20 0 C would then imply an activation threshold of 28.8 0 C, whereas a room temperature of 15 0 C, for example outside or in a gym, would lead to a lower activation temperature of 21 0 C.
  • the monitoring device may also recognise a fixed temperature change. This is based on the assumption that such a change consistently is only achieved, if the monitoring device was at room temperature and is now worn closely to the body.
  • Another object of the present invention is a tele-rehabilitation system comprising a body- worn monitoring device for monitoring movements of a user who is wearing the monitoring device, and a stationary receiver for receiving information from the monitoring device, the monitoring device being switchable between a stand-by state and an active state according to the method as described in here before.
  • the body- worn monitoring device is automatically switched to an active state at a beginning of a therapeutic exercise and is automatically switched of if the user puts off the monitoring device.
  • Figure 1 schematically illustrates a tele-rehabilitation system comprising a monitoring device, according to the present invention.
  • Figure 2 illustrate the method according to the present invention in a flow diagram.
  • Figure 3 shows a diagram to illustrate a curve progression of a physical parameter.
  • a tele-rehabilitation system 1 is schematically illustrated.
  • the system 1 comprises a stationary receiver 3 which is adapted to receive information from a wireless monitoring device 2, the transfer of information from the stationary receiver 3 to the monitoring device 2 and preferably also vice versa being illustrated by arrow 31.
  • the monitoring device 2 is wearable by a user U, for example on a limb.
  • the monitoring device 2 is, for example, an inertial sensor for motion tracking, used in wireless tele- rehabilitation.
  • the monitoring device 2 comprises a sensor chip 20 with processing, sensing and radio components and a battery which are not depicted.
  • the monitoring device 2 comprises at least one sensor 21 for detecting a condition of the monitoring device 2, the condition being that the monitoring device 2 is worn by the user U.
  • the sensor 21 detects a physical value which is illustrated by arrow 21a, the physical value being indicative of the condition as, for example, a temperature or a conductivity. In a stand-by condition the power supply of the sensor chip 20 is switched off and only the sensor 21 is active. Upon the detection that the monitoring device 2 is worn by the user U, the sensor chip 20 is powered up.
  • the monitoring device 2 comprises a further sensor 22 which detects a further physical value which is illustrated by arrow 22a.
  • the further physical value is different from the physical value detected by the first sensor 21.
  • a method for switching the monitoring device of Figure 1 between the stand-by state 100 and the active state 105 is shown.
  • the first sensor permanently or periodically detects the first physical parameter in step 102.
  • the first sensor has to be triggered first in step 101, for example by an acceleration sensor. If the reading in step 102 does not indicate the condition that the monitoring device is worn by the user, the monitoring device remains in the stand-by state which is illustrated by a recurring arrow 106. If a reading in step 102 indicates the condition that the monitoring device is worn by the user, a second sensor is activated in step 103, the second sensor detecting a second physical value, different from the first physical value.
  • step 104 If the reading of the second physical value in step 104 does not indicate the condition that the monitoring device is worn by the user, the monitoring device remains in the stand-by state which is illustrated by a recurring arrow 107.
  • the steps 103 and 104 are optional. The steps of reading the first physical value (step 102) and reading the second physical value (step 104) may as well be performed simultaneously. If a reading in step 104 indicates the condition that the monitoring device is worn by the user, the monitoring device is switched to the active state 105. In the active state 105 the monitoring device continuously or periodically repeats the step of reading the first physical value (step 102) and/or the step of reading the second physical value (step 104) which is illustrated by recurring arrows 108 and 109. If the reading in step 102 and/or in step 104 indicates that the monitoring device is no longer worn, the monitoring device is switched into the stand-by state 100 again.
  • FIG. 3 a diagram is depicted, wherein a curve progression of a parameter value as detected by the sensors 21, 22 ( Figure 1) on the axis of ordinates P is illustrated over the time on the abscissa T.
  • a first section 110 of the curve shows an almost constant measurement value Pl of the parameter.
  • the measurement values quickly increase to a reading of P2, which represents, for example an increase of temperature of the monitoring device from the moment when it is attached to the body of the user.
  • the reading of P2 indicates, that the condition of the user wearing the device has occurred and the monitoring device is switched into the active state.
  • the reading of the parameter value again is almost constant at the high level of P2, such that the monitoring device is kept in the active state.

Abstract

L'invention concerne un dispositif de surveillance, comprenant au moins un détecteur pour détecter une condition du dispositif de surveillance, un procédé pour commuter un dispositif de surveillance entre un état au repos et un état actif et un système de télérééducation avec un dispositif de surveillance porté sur le corps. Il est proposé d'éliminer un commutateur marche/arrêt sur des dispositifs de détecteur qui sont portés sur le corps, proches de la peau. Un tel dispositif conduit à des empreintes plus petites, un procédé de fabrication simplifié et à une facilité d'utilisation accrue pour les handicapés et les personnes âgées. Le dispositif peut être équipé d'un élément de détection de température. De plus, le dispositif peut utiliser des données d'accéléromètre pour vérifier les mouvements. Le dispositif peut être appliqué en tant que partie d'une solution de surveillance pour les victimes d'accident vasculaire cérébral en rééducation neurologique.
PCT/IB2007/054997 2006-12-14 2007-12-10 Dispositif de surveillance avec au moins un détecteur WO2008072168A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06126072.5 2006-12-14
EP06126072 2006-12-14

Publications (1)

Publication Number Publication Date
WO2008072168A1 true WO2008072168A1 (fr) 2008-06-19

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Application Number Title Priority Date Filing Date
PCT/IB2007/054997 WO2008072168A1 (fr) 2006-12-14 2007-12-10 Dispositif de surveillance avec au moins un détecteur

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011010244A1 (fr) * 2009-07-20 2011-01-27 Koninklijke Philips Electronics N.V. Procédé de fonctionnement d'un système de surveillance
WO2013043747A1 (fr) * 2011-09-19 2013-03-28 Dp Technologies, Inc. Dispositif de contrôle amélioré, porté sur le corps
WO2013066658A1 (fr) * 2011-11-02 2013-05-10 Hothead Technologies, Inc. Système de surveillance de données biologiques
US9110663B2 (en) 2013-01-22 2015-08-18 Google Technology Holdings LLC Initialize a computing device to perform an action
US9189062B2 (en) 2012-03-07 2015-11-17 Google Technology Holdings LLC Portable electronic device and method for controlling operation thereof based on user motion
CN105962909A (zh) * 2016-07-27 2016-09-28 中国科学院电子学研究所 一种可穿戴儿童高热惊厥监护设备
US9740839B2 (en) 2014-08-13 2017-08-22 Google Technology Holdings LLC Computing device chording authentication and control
US10561376B1 (en) 2011-11-03 2020-02-18 Dp Technologies, Inc. Method and apparatus to use a sensor in a body-worn device
WO2021028664A1 (fr) * 2019-08-09 2021-02-18 Prevayl Limited Dispositif vestimentaire et procédé
US11344460B1 (en) 2011-09-19 2022-05-31 Dp Technologies, Inc. Sleep quality optimization using a controlled sleep surface
WO2022269259A1 (fr) * 2021-06-25 2022-12-29 Prevayl Innovations Limited Dispositif de commande, module électronique, système et procédé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1421896A2 (fr) * 2002-11-19 2004-05-26 Seiko Instruments Inc. Système de contrôle pour un appareil de mesure d' informations du corps vivant
US20040152957A1 (en) * 2000-06-16 2004-08-05 John Stivoric Apparatus for detecting, receiving, deriving and displaying human physiological and contextual information
US20050245839A1 (en) * 2002-08-22 2005-11-03 John Stivoric Non-invasive temperature monitoring device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040152957A1 (en) * 2000-06-16 2004-08-05 John Stivoric Apparatus for detecting, receiving, deriving and displaying human physiological and contextual information
US20050245839A1 (en) * 2002-08-22 2005-11-03 John Stivoric Non-invasive temperature monitoring device
EP1421896A2 (fr) * 2002-11-19 2004-05-26 Seiko Instruments Inc. Système de contrôle pour un appareil de mesure d' informations du corps vivant

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011010244A1 (fr) * 2009-07-20 2011-01-27 Koninklijke Philips Electronics N.V. Procédé de fonctionnement d'un système de surveillance
US10098572B2 (en) 2009-07-20 2018-10-16 Koninklijke Philips N.V. Method for operating a monitoring system
US10463300B2 (en) 2011-09-19 2019-11-05 Dp Technologies, Inc. Body-worn monitor
WO2013043747A1 (fr) * 2011-09-19 2013-03-28 Dp Technologies, Inc. Dispositif de contrôle amélioré, porté sur le corps
US11918525B1 (en) 2011-09-19 2024-03-05 Dp Technologies, Inc. Sleep quality optimization using a controlled sleep surface
US11344460B1 (en) 2011-09-19 2022-05-31 Dp Technologies, Inc. Sleep quality optimization using a controlled sleep surface
WO2013066658A1 (fr) * 2011-11-02 2013-05-10 Hothead Technologies, Inc. Système de surveillance de données biologiques
US10561376B1 (en) 2011-11-03 2020-02-18 Dp Technologies, Inc. Method and apparatus to use a sensor in a body-worn device
US9189062B2 (en) 2012-03-07 2015-11-17 Google Technology Holdings LLC Portable electronic device and method for controlling operation thereof based on user motion
US9110663B2 (en) 2013-01-22 2015-08-18 Google Technology Holdings LLC Initialize a computing device to perform an action
US10127370B2 (en) 2014-08-13 2018-11-13 Google Technology Holdings LLC Computing device chording authentication and control
US9740839B2 (en) 2014-08-13 2017-08-22 Google Technology Holdings LLC Computing device chording authentication and control
CN105962909A (zh) * 2016-07-27 2016-09-28 中国科学院电子学研究所 一种可穿戴儿童高热惊厥监护设备
WO2021028664A1 (fr) * 2019-08-09 2021-02-18 Prevayl Limited Dispositif vestimentaire et procédé
WO2022269259A1 (fr) * 2021-06-25 2022-12-29 Prevayl Innovations Limited Dispositif de commande, module électronique, système et procédé

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