WO2004114245A1 - A device for indicating a fall - Google Patents
A device for indicating a fall Download PDFInfo
- Publication number
- WO2004114245A1 WO2004114245A1 PCT/FI2004/050103 FI2004050103W WO2004114245A1 WO 2004114245 A1 WO2004114245 A1 WO 2004114245A1 FI 2004050103 W FI2004050103 W FI 2004050103W WO 2004114245 A1 WO2004114245 A1 WO 2004114245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fall
- sensor
- portable device
- alarm
- change
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/0415—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting absence of activity per se
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/043—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting an emergency event, e.g. a fall
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0438—Sensor means for detecting
- G08B21/0446—Sensor means for detecting worn on the body to detect changes of posture, e.g. a fall, inclination, acceleration, gait
Definitions
- the invention relates to a device for indicating a fall, the device comprising a portable device attached to the wrist or elsewhere on the body.
- Falling accidents are common among the elderly. Following a fall, an elderly person is often unable to stand up again by himself and thus requires help.
- an elderly person is himself able to summon help by pressing the alarm button he carries on his person.
- the problem with this method is, however, that the elderly person may be so badly injured as a result of the fall that he will not be able to summon help, for example, due to unconsciousness.
- An automatic fall detector system could generate an alarm automatically, should the elderly person himself be unable to stand up or activate the alarm.
- the automatic safety alarm devices currently in use which are able to activate an alarm even if the user is unable to do so, apply two methods based on different principles to such falling situations.
- the 1ST Vivago wrist-care measures movements from the user's wrist.
- the device will send an automatic alarm.
- This state is not normal.
- the device is unable to detect falls directly, but it can detect an immobility state possibly following a fall and thus trigger an alarm.
- the problem with the method is that an alarm of this type is not very specific and to avoid false alarms, the alarm delay must be relatively long (30 min. to 3 h).
- the fall detectors described, for example, in the patent applications GB 2323196, EP 0 877 346 A and EP 1 128 349 Al are based on measuring the acceleration, speed and posture of the body and by means of them, on indicating the falling incident through various algorithms. Studies have shown that one such device is relatively reliable and has a short delay, but the problem with this and all other corresponding methods is the usability of the device. In the method, the state of moving is measured by means of a device that must be carried attached to the trunk, for example on a belt. If attached to the extremities, for example the wrist, the device will not function. The use of a separate device that has to be carried on a belt will in practice often be neglected, which means that help will not be available when needed. In practice, the most suitable locations for the device in long- term use are in a wristband and a pendant.
- An optimal fall detector should be easy to carry, reliable and have as short an alarm delay as possible.
- the aim of the invention is to provide a device by means of which the problems relating to the above-mentioned methods and devices can be avoided.
- a preferred embodiment of the invention is based on the fact that by means of a sensitive barometer (air pressure sensor) fitted to a safety wristband, or corresponding portable alarm device, can be detected differences in air pressure that correspond to a vertical displacement of some 0.5 m .
- the required measurement resolution is achieved, for example, by means of sport wrist computers that comprise an altimeter, or height meter based on the measurement of air pressure.
- the indication of a fall is based on a rapid change in measured air pressure. If measurement of movement is combined with the measurement air pressure from the wrist, the reliability of the fall alarm can be increased. By measuring movement, both the big movement caused by the fall, and a motionless state following the fall, which may be due to, for example, unconsciousness, may be detected.
- Changes in ambient air pressure resulting from opening doors or air conditioning in the apartment may be compensated for by means of another reference sensor fixedly installed in the apartment.
- the safety alarm devices transmit the alarms and any measurement data to a fixed base station in the apartment wirelessly by means of a short-range radio transmitter.
- a second pressure sensor for measuring the air pressure in the apartment.
- the portable alarm device sends the air pressure data to the base station it is able to compare the changed data with the signal of its own pressure sensor. If the same change is detected by both sensors at the same time, this refers to a change in the ambient pressure and is not related to falling.
- the reliability of fall detection can also be increased if the wristband or portable alarm device identifies automatically that it is properly carried by the user. In the case of a wristband, this may advantageously be done, for example, by impedance measurement of the skin on the wrist. If the device does not identify being attached to the arm, pressure changes will not indicate a fall. In this way, false alarms resulting, for example, from dropping the device can be eliminated.
- Figure 1 shows the device according to the invention when comprised in a safety wristband as a block diagram
- Figure 2 shows the behaviour of the measurement signals measured by the device according to the invention in a falling incident.
- Figure 1 shows a safety wristband 1 carried by the user which is in wireless data communication with the base station 2 located on the same premises or in the same apartment 14 as the user.
- the safety wristband 1 comprises a sensitive pressure sensor 5 for measuring changes in air pressure, a movement sensor 6 for measuring changes (accelerations) in the state of movement, and a sensor 7 for identifying the wearing on the wrist.
- the functioning of the sensor 7 may be based, for example, on impedance measurement of the skin.
- the measurement data from the sensors 5, 6, 7 are entered in a processor 3, which formulates an indication of the fall from the measurement results, or sends the data on the measurement results to the base station 2 by means of a transmitter 4, in which case the base station uses the measurement data from the sensors 5, 6, 7 for analysing and indicating the falling incident. Alternatively, analysis and indication may be done already on the processor of the portable device 1.
- the base station 2 includes a receiver 8 which relays the measurement data from the device 1 to the processor 9.
- the base station 2 has a second, stationary pressure sensor 10, which functions as a reference sensor of pressure changes and which is connected to the processor 9.
- An alarm on a possible falling incident can be sent through a modem 11 and the telephone network 12 to the call centre 13 or other recipient.
- One possible fall detection algorithm could be, for example, the following:
- the wristband 1 identifies that it is on the wrist and detects a rapid reduction in height (>0.5 m) by measuring a change in the air pressure.
- the change corresponds to moving from an upright posture to a supine posture on the floor.
- the wristband 1 sends the measurement data to the base station 2.
- the base station 2 checks whether the ambient air pressure has changed at the same time. If it has, no alarm is sent.
- the base station 2 waits until it can be confirmed on the basis of the measurement of movement by the wristband 1 that the user's movements have stopped for a sufficiently long time (possible unconsciousness) following the change.
- the base station sends an alarm on a possible fall.
- the algorithm can be optimised by using real measurement data from real sensors.
- Figure 2 illustrates graphically the behaviour of the measuring signals in a falling incident.
- the rapid change in the height of the wristband resulting from the fall is detected by the sensor 5 measuring the differences in height, which is an air pressure sensor in the embodiment disclosed.
- Changes in air pressure may, however, occur often due to various reasons: moving in stairs, changes in the air pressure of the room, etc.
- Changes in the environment may advantageously be compensated for by a second, stationary reference sensor 10.
- Other normal changes in height due to the user moving can be distinguished by combining a specific change in air pressure with a rapid change in the state of movement and a possible discontinuation of movement following it.
- Measurement of changes in posture may also be used for the same purpose.
- the wristband 1 comprises a posture measurement sensor in addition to or instead of the movement sensor 6. Pressure changes due to the moving of the device alone can be compensated for automatically by identifying whether the device is on the wrist or otherwise properly carried.
- a special application of the device according to the invention is a fall alarm connected to a safety telephone or other safety service of special groups, particularly the elderly.
- the sensors can be fitted in the wristband, which is not possible with a fall alarm based solely on the indication of body posture.
- the method does not, therefore, require wearing a separate accessory on the waist, or attached to the trunk.
- the technical implementation is based on the utilisation of existing sensors and on combining the information obtained from them.
- the implementation is extremely economical, because the pressure sensor required and its measuring electronics are low-priced and simple to connect to the electronics of a portable alarm device and a processor. This also concerns the sensor in the base station which is needed for compensating ambient pressure changes.
- the sensor 5 for measuring height difference may also be other than a sensor measuring changes in air pressure. It may be based on, for example, 3-dimensional indoor positioning, or on indoor positioning applying radio technology and time modulation in general, by means of which changes in relative height can also be measured.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04742253A EP1642248B1 (en) | 2003-06-25 | 2004-06-24 | A device for indicating a fall |
DE602004005596T DE602004005596T2 (de) | 2003-06-25 | 2004-06-24 | Einrichtung zur anzeige eines falls |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20035106 | 2003-06-25 | ||
FI20035106A FI114246B (fi) | 2003-06-25 | 2003-06-25 | Laite kaatumisen ilmaisua varten |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004114245A1 true WO2004114245A1 (en) | 2004-12-29 |
Family
ID=8566439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2004/050103 WO2004114245A1 (en) | 2003-06-25 | 2004-06-24 | A device for indicating a fall |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1642248B1 (fi) |
DE (1) | DE602004005596T2 (fi) |
FI (1) | FI114246B (fi) |
WO (1) | WO2004114245A1 (fi) |
Cited By (25)
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WO2010037564A1 (de) * | 2008-10-01 | 2010-04-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und anordnung zum feststellen eines sturzes einer person |
WO2010055450A1 (en) * | 2008-11-14 | 2010-05-20 | Koninklijke Philips Electronics N.V. | Method and apparatus for fall detection and alarm |
WO2011055255A1 (en) * | 2009-11-03 | 2011-05-12 | Koninklijke Philips Electronics N.V. | Method and system for revoking a fall alarm field of the invention |
US20110246114A1 (en) * | 2008-12-15 | 2011-10-06 | Koninklijke Philips Electronics N.V. | Method and apparatus for calibrating a fall detector |
WO2012147036A1 (en) | 2011-04-29 | 2012-11-01 | Koninklijke Philips Electronics N.V. | Method for detecting potential falls and a fall detector |
WO2014147496A1 (en) | 2013-03-22 | 2014-09-25 | Koninklijke Philips N.V. | Method for detecting falls and a fall detector. |
WO2014195146A1 (en) * | 2013-06-06 | 2014-12-11 | Koninklijke Philips N.V. | Fall detection system and method. |
WO2015036245A1 (en) | 2013-09-11 | 2015-03-19 | Koninklijke Philips N.V. | Fall detection system and method |
WO2015091581A1 (en) | 2013-12-20 | 2015-06-25 | Koninklijke Philips N.V. | A method for responding to a detected fall and an apparatus for implementing the same |
US9176932B2 (en) | 2009-11-25 | 2015-11-03 | Koninklijke Philips N.V. | Method for detecting falls and a fall detector |
CN105342623A (zh) * | 2015-09-25 | 2016-02-24 | 广东乐源数字技术有限公司 | 智能跌倒监护装置及其处理方法 |
CN105632099A (zh) * | 2014-10-27 | 2016-06-01 | 天津市天安兴导航技术有限公司 | 身体姿态识别系统及方法 |
EP2432392B1 (en) | 2009-05-20 | 2017-03-08 | Koninklijke Philips N.V. | Sensing device for detecting a wearing position |
WO2017065617A1 (en) * | 2015-10-12 | 2017-04-20 | Tellu As | Method and system for determining hight differences |
US9664584B2 (en) | 2012-03-13 | 2017-05-30 | Koninklijke Philips N.V. | Monitoring the change in height of a device using an air pressure sensor |
EP2445406B1 (en) | 2009-06-23 | 2017-09-20 | Koninklijke Philips N.V. | Methods and apparatus for detecting a fall of a user |
US9773397B2 (en) | 2013-08-26 | 2017-09-26 | Koninklijke Philips N.V. | Method for detecting falls and a fall detection system |
US9835644B2 (en) | 2011-08-18 | 2017-12-05 | Koninklijke Philips N.V. | Estimating velocity in a horizontal or vertical direction from acceleration measurements |
CN107481474A (zh) * | 2017-06-22 | 2017-12-15 | 广州番禺职业技术学院 | 一种基于智能穿戴的预警方法、电子设备及存储介质 |
US9898914B2 (en) | 2014-02-17 | 2018-02-20 | Thomas Von Chossy | Technology for detecting a fall of a person |
EP3392616A4 (en) * | 2015-12-18 | 2018-12-12 | Ricoh Company, Ltd. | Information processing system, information processing device, information processing method, program, and recording medium |
EP3537402A1 (en) * | 2018-03-09 | 2019-09-11 | Koninklijke Philips N.V. | Method and apparatus for detecting a fall by a user |
EP3709276A1 (en) * | 2019-03-12 | 2020-09-16 | Koninklijke Philips N.V. | A method for detecting fall of a user |
TWI739336B (zh) * | 2020-03-09 | 2021-09-11 | 瀚誼世界科技股份有限公司 | 氣壓偵測裝置、方法與雙氣壓計跌倒偵測系統 |
TWI781378B (zh) * | 2020-03-02 | 2022-10-21 | 瀚誼世界科技股份有限公司 | 跌倒偵測方法、單氣壓計裝置與系統 |
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US7893844B2 (en) * | 2008-06-27 | 2011-02-22 | Mark Gottlieb | Fall detection system having a floor height threshold and a resident height detection device |
DE102009001565A1 (de) * | 2009-03-16 | 2010-09-23 | Robert Bosch Gmbh | Zustandserfassungseinrichtung zur Befestigung an einem Lebewesen |
DE102009019767B4 (de) * | 2009-04-28 | 2017-07-20 | Universität Rostock | Vorrichtung und Verfahren zur Sturzerkennung |
WO2011010191A1 (en) * | 2009-07-22 | 2011-01-27 | Koninklijke Philips Electronics N.V. | Fall detectors and a method of detecting falls |
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WO2014083465A1 (en) | 2012-11-27 | 2014-06-05 | Koninklijke Philips N.V. | Detecting changes in position of a device in a horizontal or vertical direction |
WO2016044198A1 (en) * | 2014-09-15 | 2016-03-24 | 3M Innovative Properties Company | Impairment detection with environmental considerations |
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Cited By (39)
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---|---|---|---|---|
WO2010037564A1 (de) * | 2008-10-01 | 2010-04-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und anordnung zum feststellen eines sturzes einer person |
US20110215925A1 (en) * | 2008-11-14 | 2011-09-08 | Koninklijke Philips Electronics N.V. | Method and apparatus for fall detection and alarm |
WO2010055450A1 (en) * | 2008-11-14 | 2010-05-20 | Koninklijke Philips Electronics N.V. | Method and apparatus for fall detection and alarm |
US20110246114A1 (en) * | 2008-12-15 | 2011-10-06 | Koninklijke Philips Electronics N.V. | Method and apparatus for calibrating a fall detector |
EP2432392B1 (en) | 2009-05-20 | 2017-03-08 | Koninklijke Philips N.V. | Sensing device for detecting a wearing position |
EP2445406B1 (en) | 2009-06-23 | 2017-09-20 | Koninklijke Philips N.V. | Methods and apparatus for detecting a fall of a user |
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US9898914B2 (en) | 2014-02-17 | 2018-02-20 | Thomas Von Chossy | Technology for detecting a fall of a person |
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WO2017065617A1 (en) * | 2015-10-12 | 2017-04-20 | Tellu As | Method and system for determining hight differences |
EP3392616A4 (en) * | 2015-12-18 | 2018-12-12 | Ricoh Company, Ltd. | Information processing system, information processing device, information processing method, program, and recording medium |
CN107481474A (zh) * | 2017-06-22 | 2017-12-15 | 广州番禺职业技术学院 | 一种基于智能穿戴的预警方法、电子设备及存储介质 |
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US11043100B2 (en) | 2019-03-12 | 2021-06-22 | Koninklijke Philips N.V. | Method for detecting fall of a user |
CN113557557A (zh) * | 2019-03-12 | 2021-10-26 | 生命线系统公司 | 用于检测用户的跌倒的方法 |
TWI781378B (zh) * | 2020-03-02 | 2022-10-21 | 瀚誼世界科技股份有限公司 | 跌倒偵測方法、單氣壓計裝置與系統 |
TWI739336B (zh) * | 2020-03-09 | 2021-09-11 | 瀚誼世界科技股份有限公司 | 氣壓偵測裝置、方法與雙氣壓計跌倒偵測系統 |
Also Published As
Publication number | Publication date |
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FI20035106A0 (fi) | 2003-06-25 |
DE602004005596D1 (de) | 2007-05-10 |
EP1642248A1 (en) | 2006-04-05 |
FI114246B (fi) | 2004-09-15 |
EP1642248B1 (en) | 2007-03-28 |
DE602004005596T2 (de) | 2007-12-13 |
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