NON-CONTACT DETECTION OF PHYSIOLOGICAL DATA USING STOCHASTIC RESONANCE
First Claim
1. A system for sensing and measuring physiological signals of a living being, the system comprising:
- a plurality of non-contact sensors disposed to sense the physiological signals along with ambient noise; and
a processor connected to the plurality of the sensors for receiving the physiological signals and the ambient noise, wherein the processor includes;
a stochastic resonance module for performing a stochastic resonance function on the physiological signals and the ambient noise to increase a signal-to-noise ratio of the physiological signals;
an identifying module for distinguishing the physiological signals from the ambient noise; and
a measuring module for measuring values associated with the physiological signals.
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Accused Products
Abstract
Obtaining physiological data from a living being using non-contact sensors is disclosed. The non-contact sensors are disposed within, for example, a vehicle seat or bed. Signals detected by the non-contacting sensors, which include both physiological signals and ambient noise, are transmitted to a processing device which is positioned nearby; such as in the vehicle seat or bed. The processing device employs a stochastic resonance function whereby a signal-to-noise ratio of the physiological signals is improved. A wavelet multi-scale decomposition function and an adaptive threshold function are then used to identify the physiological signals and distinguish them from the ambient noise. The resulting signals are measured and then made available at an output of the processing device for transmission to and use by a human-machine interface.
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Citations
27 Claims
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1. A system for sensing and measuring physiological signals of a living being, the system comprising:
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a plurality of non-contact sensors disposed to sense the physiological signals along with ambient noise; and a processor connected to the plurality of the sensors for receiving the physiological signals and the ambient noise, wherein the processor includes; a stochastic resonance module for performing a stochastic resonance function on the physiological signals and the ambient noise to increase a signal-to-noise ratio of the physiological signals; an identifying module for distinguishing the physiological signals from the ambient noise; and a measuring module for measuring values associated with the physiological signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for sensing and measuring physiological signals of a living being, the method comprising:
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sensing the physiological signals along with ambient noise using a plurality of sensors disposed in non-contact proximity to the living being; performing a stochastic resonance function on the physiological signals and the ambient noise to increase a signal-to-noise ratio of the physiological signals; distinguishing the physiological signals from the ambient noise after the signal-to-noise ratio has been increased; and measuring values of the physiological signals that have been distinguished from the ambient noise. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus for processing physiological signals of a living being, the apparatus comprising:
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an input for receiving the physiological signals along with ambient noise that have been sensed by a plurality of sensors disposed in non-contact proximity to the living being; a stochastic resonance module for performing a stochastic resonance function on the physiological signals and the ambient noise to increase a signal-to-noise ratio of the physiological signals; an identifying module for distinguishing the physiological signals from the ambient noise; and a measuring module for measuring values associated with the physiological signals.
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Specification