A system for generating physiological signals using a cloth capacitive sensor, includes a cloth, at least one conductive area arranged on the cloth, a signal circuit; a capacitive sensor formed between the cloth and a human body; a resistor R, a capacitor C, an inductor L, an operational amplifier, a diode, a Schmitt trigger, CMOS, a transistor, or an IC that forms a charge or discharge circuit, connected with the cloth capacitive sensor to change a signal range of frequency, cycle, voltage or current; wherein when a force, pressure, tensile force, torsion or tension is applied between the human body and the cloth, the capacitance changes, the circuit sends a signal, and the system receives the change in capacitance between the conductive cloth and the human body; wherein the change is represented by a frequency, cycle, voltage or current change.

In one embodiment the invention provides a process of capturing a biopotential signal at a surface of a body using a sensor receiver which forms a first signal connection the body wherein one or more parameters of impedance of the first signal connection are unknown. The process comprises receiving the biopotential signal at an output of a first signal channel having a first transfer function which is dependent on the one of more unknown first impedance parameters. The process also comprises receiving the biopotential signal at an output of a second signal channel having a second transfer function dependent on the one of more unknown first impedance parameters. The process also comprises deriving a set of relations for the biopotential signal. The set of relations is defined dependent on the transfer function of the first signal channel, the transfer function of the second signal channel, and outputs of the first and second signal channels; and solving the set of relations to determine the captured biopotential signal.

Biometric information about a person may be collected and analyzed to gain insight into the person's physical and/or emotional conditions. The collection and analysis may be performed using a uniquely designed sensing device that includes multiple sets of sensors configured to collect EEG, EOG, EMG, EDA, and/or PPG signals from the person's head and/or facial areas. The sensing device may include a multi-layered facepad and may be coupled to a VR/AR headset and/or a scalp engagement apparatus to monitor the person's physiological and/or neural reactions to audio/visual stimuli.

A signal detection device according to an aspect of the invention includes a laminated structure of a first circuit layer (201) in which a plurality of electrodes brought into contact with a subject is formed, a second circuit layer (202) in which a plurality of amplifiers having an input portion capacitively coupled to the plurality of electrodes, respectively, is formed, and a third circuit layer (203) in which a plurality of transistors for reading outputs of the plurality of amplifiers is formed, an insulation layer which seals the second circuit layer is formed between the plurality of electrodes formed in the first circuit layer and the second circuit layer, and the plurality of electrodes and the input portions of the plurality of amplifiers are capacitively coupled to each other via the insulation layer.

An apparatus and electronic circuitry wherein the apparatus includes a first electrode arranged to enable an output indicative of a bioelectrical signal to be provided; a second electrode; and a deformable material positioned between the first electrode and the second electrode wherein the deformable material is positioned within the apparatus such that deformation of the deformable material causes a change in charge distribution across the first electrode and second electrode to enable an output indicative of a biomechanical signal to be provided by the apparatus.

A sensor device comprises at least two sensors at the end of a shaft (such as a guidewire or catheter). One sensor uses signals in a first frequency range and a first voltage range and the other sensor uses signals in a second frequency range different to the first frequency range and a second voltage range different to the first voltage range. The first sensor is shorted based on frequency analysis, thereby to prevent the first sensor being exposed to signals associated with the second sensor. This enables the two sensors to be driven by the same shared pair of wires along the shaft, with automatic selection of the suitable sensor.

A sensor device comprises at least two sensors at the end of a shaft (such as a guidewire or catheter). One sensor uses signals in a first frequency range and a first voltage range and the other sensor uses signals in a second frequency range different to the first frequency range and a second voltage range different to the first voltage range. The first sensor is shorted based on frequency analysis, thereby to prevent the first sensor being exposed to signals associated with the second sensor. This enables the two sensors to be driven by the same shared pair of wires along the shaft, with automatic selection of the suitable sensor.

A system for performing fluid level measurements on a biological subject, the system including at least one substrate including a plurality of microstructures configured to breach a stratum corneum of the subject, at least some microstructures including an electrode, a signal generator operatively connected to at least one microstructure to apply an electrical stimulatory signal to the at least one microstructure and at least one sensor operatively connected to at least one microstructure, the at least one sensor being configured to measure electrical response signals from at least one microstructure. The system also includes one or more electronic processing devices that determine measured response signals, the response signals being at least partially indicative of a bioimpedance and perform an analysis at least in part using the measured response signals to determine at least one indicator at least partially indicative of fluid levels in the subject.

A system for performing fluid level measurements on a biological subject, the system including at least one substrate including a plurality of microstructures configured to breach a stratum corneum of the subject, at least some microstructures including an electrode, a signal generator operatively connected to at least one microstructure to apply an electrical stimulatory signal to the at least one microstructure and at least one sensor operatively connected to at least one microstructure, the at least one sensor being configured to measure electrical response signals from at least one microstructure. The system also includes one or more electronic processing devices that determine measured response signals, the response signals being at least partially indicative of a bioimpedance and perform an analysis at least in part using the measured response signals to determine at least one indicator at least partially indicative of fluid levels in the subject.

A system for providing a standard electrocardiogram (ECG) signal for a human body using contactless ECG sensors for outputting to exiting medical equipment or for storage or viewing on a remote device. The system comprises a digital processing module (DPM) adapted to connect to an array of contactless ECG sensors provided in a fabric or the like. A selection mechanism is embedded into the DPM which allows the DPM to identify body parts using the ECG signals of the different ECG sensors and select for each body part the best sensor lead. The DPM may then produce the standard ECG signal using the selected ECG signals for the different body parts detected. The system is adapted to continuously re-examine the selection to ensure that the best leads are selected for a given body part following a movement of the body part, thereby, allowing for continuous and un-interrupted ECG monitoring of the patient.