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US 10,206,590 B2Granted
Method and system for monitoring stress
AssigneeMurata Manufacturing Co., Ltd.
InventorUlf Meriheinä
Life of this patent
Estimating the term…
Abstract
Method and system for monitoring stress level of a subject. Beat-to-beat time variation and stroke volume variation of the heart a subject are obtained simultaneously, and a stress level indication is determined as a function of the beat-to-beat time variation and the relative stroke volume variation. More accurate and reliable estimates for stress level may be obtained.
Claims25
A method for monitoring stress level of a subject, said method comprising:
- attaching a sensor device to a subject;
- simultaneously measuring, with the sensor device, beat-to-beat time variation and a relative stroke volume variation of a heart of the subject;
- outputting the beat-to-beat time variation and the stroke volume variation to a control device that is communicatively coupled to the sensor device;
- determining, by the control device, a stress level indication as a function of the beat-to-beat time variation and the relative stroke volume variation, wherein the function comprises a ratio of beat-to-beat time and stroke volume variations, and wherein the beat-to-beat time and stroke volume variations are simultaneously obtained from the subject;
- and
- outputting the stress level indication through an interface unit of a monitoring system to indicate a temporary stress level of the subject, using the stress level indication for further processing, and based on the further processing, indicating via the interface unit sleep cycles of the subject, or using the stress level indication for further processing, and based on the further processing, giving an early warning of a pathological condition via the interface unit.
3 more elements
A stress monitoring system, comprising:
- a sensor device attached to a subject, the sensor device configured to simultaneously obtain beat-to-beat time variation and a relative stroke volume variation of the heart of the subject;
- and
- a control device configured to determine a stress level indication as a function of the beat-to-beat time variation and the relative stroke volume variation,
- wherein the sensor device is further configured to output the beat-to-time variation and the stroke volume variation to the control device that is communicatively coupled to the sensor device,
- wherein the function comprises a ratio of beat-to-beat time and stroke volume variations, and wherein the beat-to-beat time and stroke volume variations are simultaneously obtained from the subject, and
- wherein the control device is further configured to output the stress level indication through an interface unit of the stress monitoring system to indicate a temporary stress level of the subject, use the stress level indication for further processing, and based on the further processing, indicating via the interface unit sleep cycles of the subject, or use the stress level indication for further processing, and based on the further processing, giving an early warning of a pathological condition via the interface unit.
3 more elements
Dependencies are inferred from the claim text.