Personal system for the detection of a risky situation and alert
First Claim
1. A method for detecting a situation threatening an individual and implementing a system comprising a plurality of sensors;
- an alarm;
eyeglasses comprising hinged stems;
a triaxial accelerometer;
an IR transmitter;
an IR receiver;
a barometric sensor; and
a processing and calculation unit comprising a microprocessor and a memory;
wherein the processing and calculation unit is configured to execute a computer program to analyze data issued by said plurality of sensors and to trigger the alarm based on a result of the analyzed data; and
wherein said plurality of sensors being set up in stems and rims of the eyeglasses and being connected to the processing and calculation unit, the method comprising any combination of steps consisting of;
a) controlling the IR transmitter, and collecting and processing signals received from the IR receiver to detect that the eyeglasses are worn by a user;
b) controlling the IR transmitter, and collecting and processing the signals received from the IR receiver to measure a state of alertness of the user, wherein the processing of signals received from the IR receiver comprises steps of filtering of the signals collected from the IR receiver to eliminate influence of ambient light on the signals from the IR receiver and calculating a composite alertness index, used to trigger an alertness alarm, by combining alertness parameters comprising;
(i) a relative duration of masking of an eye of a user by user'"'"'s eyelid on a first predetermined time;
(ii) an average time interval between two successive eye blinks, over a second predetermined time, in relation to a first reference that is specific to the user;
(iii) scattering of a ratio between a closing magnitude and a closing speed of the user'"'"'s eyelid, over a third predetermined time, in relation to a second reference that is specific to the user; and
(iv) a proportion of eye blinks whose duration exceeds a predetermined certain threshold, over a fourth predetermined time;
c) collecting and processing signals received from the triaxial accelerometer to detect a fall;
d) collecting and processing signals received from the barometric sensor in combination with the processing of signals collected from the triaxial accelerometer to characterize the fall; and
e) generating an alert in response to results of step b), step c) or step d).
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Accused Products
Abstract
A system and a method implementing such a system. The system includes eyeglasses having hinged stems, a plurality of sensors and an alert alarm. The system further includes a triaxial accelerometer, an IR transmitter, an IR receiver, and a barometric sensor. The sensors are set up in the hinged stems and the rims of the eyeglasses and connected to a processing and calculation unit. The processing and calculation unit includes a microprocessor and a memory. The processing and calculation unit executes a computer program to analyze data issued by the sensors and triggers the alarm based on a result of the analyzed data.
19 Citations
12 Claims
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1. A method for detecting a situation threatening an individual and implementing a system comprising a plurality of sensors;
- an alarm;
eyeglasses comprising hinged stems;
a triaxial accelerometer;
an IR transmitter;
an IR receiver;
a barometric sensor; and
a processing and calculation unit comprising a microprocessor and a memory;
wherein the processing and calculation unit is configured to execute a computer program to analyze data issued by said plurality of sensors and to trigger the alarm based on a result of the analyzed data; and
wherein said plurality of sensors being set up in stems and rims of the eyeglasses and being connected to the processing and calculation unit, the method comprising any combination of steps consisting of;a) controlling the IR transmitter, and collecting and processing signals received from the IR receiver to detect that the eyeglasses are worn by a user; b) controlling the IR transmitter, and collecting and processing the signals received from the IR receiver to measure a state of alertness of the user, wherein the processing of signals received from the IR receiver comprises steps of filtering of the signals collected from the IR receiver to eliminate influence of ambient light on the signals from the IR receiver and calculating a composite alertness index, used to trigger an alertness alarm, by combining alertness parameters comprising; (i) a relative duration of masking of an eye of a user by user'"'"'s eyelid on a first predetermined time; (ii) an average time interval between two successive eye blinks, over a second predetermined time, in relation to a first reference that is specific to the user; (iii) scattering of a ratio between a closing magnitude and a closing speed of the user'"'"'s eyelid, over a third predetermined time, in relation to a second reference that is specific to the user; and (iv) a proportion of eye blinks whose duration exceeds a predetermined certain threshold, over a fourth predetermined time; c) collecting and processing signals received from the triaxial accelerometer to detect a fall; d) collecting and processing signals received from the barometric sensor in combination with the processing of signals collected from the triaxial accelerometer to characterize the fall; and e) generating an alert in response to results of step b), step c) or step d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- an alarm;
Specification