A printed circuit board device includes: a first capacitive sensor configured to measure a first capacitance within a contained volume having known dimensions, wherein the first capacitance changes as a substance is received into the contained volume; a second capacitive sensor having a plurality of trigger points at a plurality of corresponding known heights within the contained volume, the second capacitive sensor configured to detect when the substance received into the contained volume has reached each of the corresponding known heights within the contained volume; and wherein at least one of a level of the substance within the contained volume, a volume of the substance within the contained volume, or a flow rate of the substance into the contained volume is determined based on data from the first capacitive sensor and the second capacitive sensor.

An apparatus for monitoring a sleep parameter of a user includes an adhesive pad configured to conform to a surface of the user and a flexible element coupled to the adhesive pad. The flexible element includes a conductive fabric, and exhibits a modified electrical property in response to an applied force. The apparatus also includes a power source electrically coupled to the flexible element, and an electrical circuit electrically coupled to the power source and the flexible conductive element. The electrical circuit is configured to detect, during use, a change in an electrical property of the flexible element.

An apparatus for monitoring a sleep parameter of a user includes an adhesive pad configured to conform to a surface of the user and a flexible element coupled to the adhesive pad. The flexible element includes a conductive fabric, and exhibits a modified electrical property in response to an applied force. The apparatus also includes a power source electrically coupled to the flexible element, and an electrical circuit electrically coupled to the power source and the flexible conductive element. The electrical circuit is configured to detect, during use, a change in an electrical property of the flexible element.

A method of measuring body fluid content, the method comprising computer executed steps, the steps comprising: receiving a value of a temperature of a body part of a subject, and generating corrective data based on the received measured temperature value and on previously gathered data, the corrective data being usable for correcting a measurement of content of a fluid sample taken from the body part.

Systems and methods for assisting user with hearing by amplifying sound using an amplifier with gain and amplitude controls for a plurality of frequencies; and applying a learning machine to identify an aural environment and adjust the amplifiers for optimum hearing.

There is provided a technique configured to measure blood pressure with high accuracy. A pulse wave is acquired from each of a plurality of regions on a body surface of a subject, at least two regions are selected from among the plurality of regions in accordance with signal quality of the acquired pulse wave of each region, and blood pressure information is calculated with reference to pulse wave propagation information indicating pulse wave propagation between the at least two regions selected.

Embodiments of this disclosure are directed to a wearable device having a housing, a display, and a sensor system. The display is at least partially surrounded by the housing. The sensor system is housed at least partially in the housing. The sensor system includes a first sensor, a second sensor, and a controller. The first sensor is configured to contact a body part of a user and generate a first signal. The second sensor is configured to sense a mechanical wave in an ambient environment of the wearable device and generate a second signal. The controller is configured to generate a resultant signal by removing noise from the first signal using the second signal, and determine a health parameter of the user from the resultant signal.

The invention relates to a photoplethysmography (PPG) sensing device comprising—a pulsed light source, —at least one pixel to create photo-generated electrons, synchronized with said pulsed light source. It is mainly characterized in that each pixel comprises: —a pinned photodiode (PPD) having two electronic connection nodes, —a sense node (SN), to convert the photo-generated electrons into a voltage, and—a Transfer Gate (TGtransfer) transistor, having its source electronically connected to one electronic connection node of said pinned photodiode (PPD), and being configured to act as a transfer gate (TG) between said pinned photodiode (PPD) and said sense node (SN), allowing the photo-generated electrons to sink when the light is pulsed-off, the photo-generated electrons integration when the light is pulsed-on and the transfer of at least part of the integrated photo-generated electrons to said sense node for a read-out.

A body composition detection method and a device (100) are provided. The device (100) includes a housing (2), a support layer, and at least one detector (101, 102, 103, or 104). The detector (101, 102, 103, or 104) includes an impedance measurement assembly and a dehumidification assembly. The support layer includes a processor. Both the impedance measurement assembly and the dehumidification assembly are electrically connected to the processor. The impedance measurement assembly, the dehumidification assembly, and the processor are all disposed inside the housing (2). The impedance measurement assembly is embedded on an upper surface of the housing (2). An upper surface of the impedance measurement assembly is flush with or higher than the upper surface of the housing (2). The upper surface of the impedance measurement assembly is in contact with a human body during measurement.

Systems and methods for assisting user with hearing by amplifying sound using an amplifier with gain and amplitude controls for a plurality of frequencies; and applying a learning machine to identify an aural environment and adjust the amplifiers for optimum hearing.