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1. (WO2019067489) SYSTÈMES DE DÉTECTION DE CHUTE ET D'ALERTE MÉDICALE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

1. A fall detecting device comprising :

a housing configured to be positioned adjacent a wearer's body;

a processor;

a sensor system operatively connected to the processor and configured to detect a physiological condition of the wearer's body;

a motion sensor operatively connected to the processor;

a wireless communication module operatively connected to the processor;

a memory operatively connected to the processor, the memory storing computer readable instructions that, when executed, cause the processor to:

monitor the motion sensor to detect a decrease in acceleration in the gravitational direction below a first predetermined threshold;

start a timer upon detecting the decrease in acceleration;

monitor the motion sensor to determine whether the motion senso signals a fall-indicative acceleration above a second predetermined level prior to the timer reaching a first predetermined time;

monitor the motion sensor to determine whether the motion senso signals a recovery-indicative acceleration above a third predetermined level prior to the timer reaching a second predetermined time; and

activate the wireless communication module to initiate an emergency alert if the fall-indicative acceleration is detected and the recovery-indicative acceleration is not detected.

2. The fall detecting device of claim 1, wherein the recovery-indicative acceleration comprises an average value of accelerations over time.

3. The fall detecting device of claim 1, wherein the computer readable instructions further cause the processor to activate a speaker to prompt the wearer to confirm or dismiss an initiation of an emergency alert.

4. The fall detecting device of claim 1, wherein the sensor system comprises a photoplethysmographic sensor.

5. The fall detecting device of claim 4, wherein the computer readable instructions further cause the processor to:

operate the photoplethysmographic sensor to detect blood flow information; determine a heart rate of the wearer based on the blood flow information; and display the heart rate on a user interface.

6. The fall detecting device of claim 4, wherein the computer readable instructions further cause the processor to:

operate the photoplethysmographic sensor to detect a first set of blood flow information for a first detection time period following an initial activation of the fall detecting device;

determine a first heart rate of the wearer during the first detection time period based on the first set of blood flow information;

display the first heart rate on a user interface;

operate the photoplethysmographic sensor to detect a second set of blood flow information for a second detection time period following the first detection time period; determine a second heart rate of the wearer during the second detection time period based on the second set of blood flow information; and

display the second heart rate on the user interface.

7. The fall detecting device of claim 6, wherein the second period of time is longer than the first period of time.

8. The fall detecting device of claim 1, further comprising a user interface on the housing.

9. the fall detecting device of claim 8, wherein the user interface includes a manually-operable emergency alert input operable to cause the processor to activate the wireless communication module to initiate an emergency alert.

10. The fall detecting device of claim 8, wherein the user interface is configured to provide visual information regarding the physiological condition of the wearer's body.

11. The fall detecting device of claim 1, further comprising a battery operatively connected to the processor and configured to power the fall detecting device.

12. The fall detecting device of claim 1, wherein the motion sensor comprises a multi-axis accelerometer.

13. A fall detection method for a fall detecting device having at least one motion sensor, the method comprising :

monitoring a physiological condition of a wearer;

monitoring the motion sensor to detect a decrease in acceleration in the gravitational direction below a first predetermined threshold;

starting a timer upon detecting the decrease in acceleration;

monitoring the motion sensor to determine whether the motion sensor signals a fall-indicative acceleration above a second predetermined level prior to the timer reaching a first predetermined time;

monitoring the motion sensor to determine whether the motion sensor signals a recovery-indicative acceleration above a third predetermined level prior to the timer reaching a second predetermined time; and

activating a wireless communication module to initiate an emergency alert if the fall-indicative acceleration is detected and the recovery-indicative acceleration is not detected.

14. The fall detecting method of claim 12, wherein the recovery-indicative acceleration comprises an average value of accelerations over time.

15. The fall detecting method of claim 12, further comprising activating a speaker to request confirmation or dismissal of an initiation of an emergency alert.