SYSTEM AND METHOD FOR MONITORING CARDIORESPIRATORY PARAMETERS
First Claim
1. A system for measuring, analyzing, and displaying respiration, cardiac activity, and non-cardiorespiratory bodily movement, the system comprising:
- one or more sensors configured to receive a reflected radio-frequency (RF) signal off a living subject, wherein the RF signal comprises a pulsed RF signal;
a processor configured to analyze the reflected signal to determine a measurement of physiological activity of the living subject; and
an output arranged to provide selected information relating to the physiological activity to a user of the system.
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Accused Products
Abstract
An apparatus, system, and method is disclosed for monitoring the motion, breathing, heart rate of humans in a convenient and low-cost fashion, and for deriving and displaying useful measurements of cardiorespiratory performance from the measured signals. The motion, breathing, and heart rate signals are obtained through a processing applied to a raw signal obtained in a non-contact fashion, typically using a radio-frequency sensor. Processing into separate cardiac and respiratory components is described. The heart rate can be determined by using either spectral or time-domain processing. The respiratory rate can be calculated using spectral analysis. Processing to derive the heart rate, respiratory sinus arrhythmia, or a ventilatory threshold parameter using the system is described. The sensor, processing, and display can be incorporated in a single device which can be worn or held close to the body while exercising (e.g., in a wristwatch or mobile phone configuration), or alternately placed in a fixed piece of exercise equipment at some distance form the body (e.g., in a treadmill dash panel), and may also be integrated with other sensors, such as position locators.
162 Citations
39 Claims
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1. A system for measuring, analyzing, and displaying respiration, cardiac activity, and non-cardiorespiratory bodily movement, the system comprising:
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one or more sensors configured to receive a reflected radio-frequency (RF) signal off a living subject, wherein the RF signal comprises a pulsed RF signal; a processor configured to analyze the reflected signal to determine a measurement of physiological activity of the living subject; and an output arranged to provide selected information relating to the physiological activity to a user of the system. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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2. A system for measuring, analyzing, and displaying respiration, cardiac activity, and non-cardiorespiratory bodily movement, the system comprising:
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one or more sensors configured to receive a reflected radio-frequency (RF) signal off a living subject, wherein the RF signal comprises a single RF frequency; a processor configured to analyze the reflected signal to determine a measurement of physiological activity of the living subject; and an output arranged to provide selected information relating to the physiological activity to a user of the system.
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3. A system for measuring, analyzing, and displaying respiration, cardiac activity, and non-cardiorespiratory bodily movement, the system comprising:
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one or more sensors configured to receive a reflected radio-frequency (RF) signal off a living subject; a processor configured to analyze the reflected signal to determine a measurement of physiological activity of the living subject, wherein the measured physiological activity comprises two or more physiological signals; and an output arranged to provide the two or more physiological signals to a user of the system.
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37. A method for measuring, analyzing, and displaying respiration, cardiac activity, and non-cardiorespiratory bodily movement of a living subject, the method comprising:
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receiving a pulsed radio-frequency (RF) signal reflected from the living subject; analyzing the reflected signal to produce measurements relating to the respiration, cardiac activity, and non-cardiorespiratory bodily movement of the living subject; and outputting selected measurements to a user of the system. - View Dependent Claims (38, 39)
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Specification