System and method for relaxation
AssigneeThe Hong Kong Polytechnic University
InventorsJoanne Wai Yee Chung, Thomas Kwok Shing Wong, William Chi Keung Cheung, Benny Yat Sing Lam, Suk Yin Chow, Henry Chi Fuk So
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Abstract
A system (10) for relaxation, the system (10) comprising: electrodes (15) worn by a user to measure the electrocardiogram (ECG) of the user; a processor (18) to process the ECG to remove noise and analyse the ECG signal in the time and frequency domains, and compute an index of stress (33) from the processed ECG; and a multimedia device (14) to provide real-time biofeedback by communicating the index of stress (33) to the user together with a relaxation video (31) to cause the user to relax.
Claims8
A method for relaxation, the method comprising:
- processing, using a processor, an electrocardiogram (ECG) of a user to remove noise and analyse the ECG signal in the time and frequency domains;
- computing an index of stress from the ECG signal processed;
- and
- providing real-time biofeedback by communicating the index of stress to the user together with a relaxation video to cause the user to relax,
- wherein the real-time biofeedback is any one from the group consisting of:
- a visual display of the index of stress, an audio response about the index of stress, a tactile-based response corresponding to the index of stress, and a combination thereof, and
- wherein the index of stress is computed by:
- determining the distance from the co-ordinate of (LF, HF) to the centre co-ordinates of an area representing an optimum area of autonomic balance on an autonomic balance two-dimensional diagram;
- and
- dividing the distance by 5.65 and multiplying by 10;
- wherein if the distance is greater than 5.65, the index of stress is set to 10 and wherein the value 5.65 represents HF at optimum preferred stress level at rest and the index of stress of 10 represents the maximum upper limit of stress.
A method for generating an index of stress having a range from 1 to 10, the index of stress being communicated to relax a user, the method comprising:
- determining, using a processor, the distance from a co-ordinate of (LF, HF) of a processed ECG to the centre co-ordinates of an area representing an optimum area of autonomic balance on an autonomic balance two dimensional diagram;
- and
- dividing the distance by 5.65 and multiplying by 10;
- wherein if the distance is greater than 5.65, the index of stress is set to 10, wherein the value 5.65 represents HF at optimum preferred stress level at rest and the index of stress of 10 represents the maximum upper limit of stress.
Dependencies are inferred from the claim text.