HEART RATE ADAPTIVE FILTERING DEVICE, PHYSIOLOGY INFORMATION SENSING DEVICE AND METHOD FOR PROCESSING PULSATILE SIGNAL
First Claim
1. A heart rate adaptive filter, comprising:
- a heart rate measuring device, used to determine a heart rate or a heart rate signal according to a pulsatile signal sensed from an individual user; and
a frequency configurable filter, electrically connected to the heart rate measuring device, used to determine a transfer function thereof according to the heart rate or the heart rate signal, and apply the transfer function to the pulsatile signal to generate an adaptively filtered pulsatile signal.
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Abstract
A heart rate adaptive filter used in a physiology information sensing device is illustrated. The heart rate adaptive filter has a heart rate measuring device and a frequency configurable filter electrically connected to the heart rate measuring device. The heart rate measuring device can determine a heart rate or a heart rate signal according to a pulsatile signal sensed from an individual user. The frequency configurable filter can determine a transfer function thereof according to the heart rate or the heart rate signal and apply the transfer function to the pulsatile signal to generate an adaptively filtered pulsatile signal. Since the transfer function is determined according to the heart rate or the heart rate signal which has information of a characteristic frequency of the pulsatile signal, the signal-to-noise ratio of the adaptively filtered pulsatile signal can have improvement.
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20 Claims
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1. A heart rate adaptive filter, comprising:
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a heart rate measuring device, used to determine a heart rate or a heart rate signal according to a pulsatile signal sensed from an individual user; and a frequency configurable filter, electrically connected to the heart rate measuring device, used to determine a transfer function thereof according to the heart rate or the heart rate signal, and apply the transfer function to the pulsatile signal to generate an adaptively filtered pulsatile signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A physiology information sensing device, comprising:
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a pulsatile signal sensing device, used to sense a pulsatile signal from an individual user; a heart rate adaptive filtering device, electrically connected to the pulsatile signal sensing device, used to determine a heart rate or a heart rate signal according to the pulsatile signal, determine a transfer function thereof according to the heart rate or the heart rate signal, and apply the transfer function to the pulsatile signal to generate an adaptively filtered pulsatile signal; and an indicator generating device, electrically connected to the heart rate adaptive filtering device, used to generate at least one indication signal according to the adaptively filtered pulsatile signal, wherein the indication signal is an indicator for evaluating physiology status of the individual user. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for processing a pulsatile signal sensed from an individual user, comprising steps of:
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determining a heart rate or a heart rate signal according to the pulsatile signal; determining a transfer function thereof according to the heart rate or the heart rate signal; and applying the transfer function to the pulsatile signal to generate an adaptively filtered pulsatile signal.
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Specification