Wearable system for detecting and measuring biosignals
Inventors
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Publication Number
US-10028703-B2
Publication Date
2018-07-24
Expiration Date
Abstract
A system for detecting bioelectrical signals of a user comprising: a set of sensors configured to detect bioelectrical signals from the user, each sensor in the set of sensors configured to provide non-polarizable contact at the body of the user; an electronics subsystem comprising a power module configured to distribute power to the system and a signal processing module configured to receive signals from the set of sensors; a set of sensor interfaces coupling the set of sensors to the electronics subsystem and configured to facilitate noise isolation within the system; and a housing coupled to the electronics subsystem, wherein the housing facilitates coupling of the system to a head region of the user.
Core Innovation
The invention is a system for detecting bioelectrical signals of a user that includes a set of sensors configured to detect EEG signals. Each sensor includes a semi-dry hydrogel with a non-volatile fluid configured to provide non-polarizable contact, and the sensor set includes anterior frontal sensors, temporal lobe sensors, and a central sensor for coupling to the user at the head region.
The system includes an electronics subsystem with a power module configured to distribute power and a signal processing module configured to process EEG signals or bioelectrical signals. The system uses a set of sensor interfaces that couple the sensors to the electronics subsystem and perform preprocessing that supports DC blocking, coupling, and level shifting, including pre-gain coupling and pre-gain level shift coupled to an amplifier and post-gain coupling and post-gain level shift.
A head-worn housing coupled to the electronics subsystem includes a set of arms that position sensors on the user’s head. The arms originate proximal a temporal bone, position anterior frontal and temporal lobe sensors proximal frontal and temporal bone portions, and guide sensors toward terminal positions at a head region, supporting integration of the semi-dry hydrogel non-polarizable contact with the electronics subsystem.
Claims Coverage
The patent text provided includes two independent claims: clm-00001 and clm-00008. These claims cover a head-worn EEG or bioelectrical detection system with semi-dry hydrogel non-polarizable sensors, an electronics subsystem for power distribution and signal processing, sensor interfaces performing coupling, level shifting, and DC blocking, and a housing with arms that mechanically position sensors at defined head regions.
Semi-dry hydrogel non-polarizable EEG sensors with labeled head-region locations
A set of sensors configured to detect EEG signals from the user, each sensor comprising a semi-dry hydrogel with a non-volatile fluid configured to provide non-polarizable contact, and including anterior frontal sensors, temporal lobe sensors, and a central sensor.
Head-worn housing arms that mechanically position multiple EEG sensors to anterior frontal and temporal bone regions
A housing configured to be worn at a head region of the user and comprising a set of arms that position anterior frontal and temporal lobe sensors proximal frontal and temporal bone portions upon coupling of the system to the user.
Sensor interfaces with pre-gain coupling and level shifting into amplifier and post-gain coupling and level shifting
A set of sensor interfaces coupling the set of sensors to the electronics subsystem through the set of arms of the housing, each sensor interface comprising a pre-gain coupling and pre-gain level shift coupled to an amplifier, and the amplifier coupled to a post-gain coupling and post-gain level shift.
Sensor interfaces that block direct current signals in preprocessing
A set of sensor interfaces configured to couple the set of sensors to the electronics subsystem and configured to block direct current signals in preprocessing signals transmitted to the electronics subsystem.
Arms that guide sensors toward terminal positions at a head region
A housing coupled to the electronics subsystem and comprising a set of arms, each arm housing a sensor of the set of sensors and configured to guide the sensor toward a terminal position at a head region of the user.
Across clm-00001 and clm-00008, the inventive coverage centers on semi-dry hydrogel sensors with non-volatile fluid for non-polarizable contact, a head-worn housing with arms that position and guide EEG sensors on the user’s head, and sensor interfaces that perform coupling and level shifting while blocking direct current signals during preprocessing for connection to an electronics subsystem that powers and processes the detected bioelectrical signals.
Stated Advantages
Provides non-polarizable contact for EEG and bioelectrical signal detection.
Blocks direct current signals in preprocessing signals transmitted to the electronics subsystem.
Supports sensor interfacing architectures that include pre-gain coupling and pre-gain level shift and post-gain coupling and post-gain level shift to the electronics system.
Documented Applications
Wearable head-region detection of EEG signals and other bioelectrical signals using a set of sensors coupled through a head-worn housing.
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