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US 10,950,112 B2Granted
Wrist fall detector based on arm direction
AssigneeKoninklijke Philips N.V.
InventorWarner Rudolph Theophile Ten Kate
Life of this patent
Estimating the term…
Abstract
A fall detection apparatus detects when a suspected fall event has occurred based on receipt of arm direction information. The fall detection apparatus provides further discrimination of when events involving a subject are suspected fall events.
Claims15
An apparatus worn proximal to a wrist of a subject, the apparatus comprising:
- a sensor system;
- a memory comprising instructions;
- and
- a processing circuit configured to execute the instructions to:
- receive signals from the sensor system, the signals comprising arm direction information;
- determine an event involving the subject is a suspected fall event based on at least the arm direction information;
- determine whether the suspected fall event is likely to be an actual fall event based upon a corrected height change of an arm of the subject;
- provide an alert based on the determination that the suspected fall event is likely to be an actual fall event;
- and
- trigger activation of circuitry based on the alert, the trigger prompting assistance for the subject.
7 more elements
An apparatus worn proximal to a wrist of a subject, the apparatus comprising:
- a sensor system;
- a memory comprising instructions;
- and
- a processing circuit configured to execute the instructions to:
- receive signals from the sensor system, the signals comprising arm direction information;
- determine an event involving the subject is a suspected fall event based on at least the arm direction information;
- provide an alert based on the determination;
- and
- trigger activation of circuitry based on the alert, the trigger prompting assistance for the subject
- execute instructions to determine a height change correction based on a summation of a height change of the wrist before correction, a first correction term corresponding to an arm direction before the suspected fall event, and a second correction term corresponding to the arm direction after the suspected fall event, the first correction term and the second correction term based on the arm direction information and an arm length, wherein the arm length is estimated or received as input.
7 more elements
A computer-implemented method for detecting a suspected fall event involving a subject, the computer-implemented method comprising:
- receiving signals comprising arm direction information;
- and
- determining an event involving the subject is the suspected fall event based on at least the arm direction information;
- determining whether the suspected fall event is likely to be an actual fall event based upon a corrected height change of an arm of the subject
- providing an alert based on the determination that the suspected fall event is likely to be an actual fall event;
- and
- triggering activation of circuitry based on the alert, the trigger prompting assistance for the subject.
4 more elements
Dependencies are inferred from the claim text.