METHOD AND SYSTEM FOR PULSE MEASUREMENT
First Claim
1. A method for determining a person'"'"'s heart pulse rate, comprising:
- radiating first and second wavelengths of light towards a tissue;
measuring and storing a first and second set of parameter values from the signals reflected back from said first and second wavelengths respectively, wherein said first set of parameter values represents a first signal corresponding to a combination of the heart pulse rate and extraneous noise and said second set of parameter values represents a second signal mainly comprising extraneous noise;
deducting the second set of parameter values from the first set of parameter values, thereby to obtain the heart pulse rate.
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Abstract
A method and system for determining a person'"'"'s heart pulse rate in noisy environments is provided. The method of determining a person'"'"'s heart pulse rate includes radiating first and second wavelengths of light towards a tissue, measuring and storing a first and second set of parameter values from the signals reflected back from the first and second wavelengths respectively. The first set of parameter values represents a first signal corresponding to a combination of the heart pulse rate and extraneous noise and the second set of parameter values represents a second signal mainly comprising extraneous noise. The heart pulse rate is obtained by deducting the second set of parameter values from the first set of parameter values.
10 Citations
12 Claims
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1. A method for determining a person'"'"'s heart pulse rate, comprising:
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radiating first and second wavelengths of light towards a tissue; measuring and storing a first and second set of parameter values from the signals reflected back from said first and second wavelengths respectively, wherein said first set of parameter values represents a first signal corresponding to a combination of the heart pulse rate and extraneous noise and said second set of parameter values represents a second signal mainly comprising extraneous noise; deducting the second set of parameter values from the first set of parameter values, thereby to obtain the heart pulse rate. - View Dependent Claims (2, 3, 4)
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5. An optical accelerometer comprising:
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first and second light sources for radiating first and second wavelengths of light, respectively towards a tissue; a sensor for receiving a first signal and a second signal reflected back from the tissue from said first and second light sources respectively, said first signal comprising an AC signal representing the heart pulse rate together with a DC signal and said second signal comprising a DC signal representing movement plus a relatively minor AC signal; and a filter configured for separating the first signal from the second signal, thereby to determine the movement. - View Dependent Claims (6, 7, 8)
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9. A non-invasive device for the measurement of heart pulse rate and pulse oximetry, comprising:
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first and second light sources for radiating first and second wavelengths of light, respectively towards a tissue; a sensor for receiving light reflected back from the tissue from said first and second light sources, said received light from said first light source represents a first signal corresponding to a combination of the heart pulse rate and extraneous noise and said second set of parameter values represents a second signal corresponding to the extraneous noise only; and a filter configured for separating the signal representing the heart pulse rate from signal representing a combination of the heart pulse rate and noise, thereby to obtain the heart pulse rate. - View Dependent Claims (10, 11, 12)
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Specification