Abstract: Systems and methods are provided for a multi-modal sleep system comprising a data processor for operating in a plurality of operating modes. The data processor may detect at least one sensor providing data to the data processor and determine a sensor type associated with each of the at least one sensor. The data processor may select a mode of operation based on the determined sensor type of the detected at least one sensor and of each of the at least one sensor. A first of the plurality of operating modes may be selected in response to determining that the at least one detected sensor includes a first sensor type or combination of sensor types. The data processor may be configured to receive data from the at least one detected sensor and process the received data according to the selected mode of operation to output a characterization of a user's sleep.

Abstract: The present disclosure provides a light adjusting glass, including a light transmitting substrate and a light adjusting functional layer, where the light transmitting substrate includes a first substrate and a second substrate which are disposed opposite to each other, the light adjusting functional layer is disposed between the first substrate and the second substrate, and the light adjusting functional layer includes at least two liquid crystal cells; the liquid crystal cells are disposed in a laminated mode, and each of the liquid crystal cells has a liquid crystal layer including dye liquid crystal.

Abstract: A system and method are provided for performing a hole inspection performance study. Specimens for the performance study are made from a reconfigurable set of inspection plates. Each plate includes multiple test holes which are located symmetrically. The plates may be of various thicknesses and materials. Each test hole may or may not have a feature such as a crack or machining notch. Such features may be located at various positions of the hole, such as at an edge, within the bore, and at various circumferential positions. A specimen is formed by stacking two or more plates and securing the stack together with an alignment tool. A variety of specimens may be formed by using different combinations of inspection plates and flipping and rotating the member plates. A hole inspection system is disclosed as well as an inspection procedure and data processing algorithm for inspecting each hole.

Abstract: A system and method are provided for inspecting challenging material locations such as holes. The system may include a sensor cartridge (“mandrel”) for hole inspection that has a helical portion to which a sensor array is attached. The radius of the helical portion can be increased or decreased by applying a torque to the helical portion thereby allowing the sensor to be inserted into a hole or pressed against the wall of the hole. A scanner is described to which mandrels can be quickly connected and changed enabling an inspector to quickly switch between different mandrels (e.g., for different holes sizes and sensor configurations). Also disclosed is an inspection procedure and data processing algorithm for performing an inspection. The data processing algorithm utilizes a signature library for enhancing the detection or sizing of features of interest such as cracks. The algorithm and library can account for material edges, various material types.

Abstract: Method and apparatus obtain information about a patient and/or a respiratory therapy system that is configured to deliver respiratory therapy to the patient. The respiratory therapy system may include a flow generator configured to generate a supply of pressurized air along an air circuit to a patient interface. A sound signal representing a sound in the air circuit may be processed to obtain cepstrum data. A time series of delay estimates based on acoustic signatures of the cepstrum data may be generated. Each acoustic signature may represent a reflection of sound from a patient interface along the air circuit. Variation in the time series of delay estimates may be analysed. One or more output indicators based on the variation may be generated. The one or more output indicators may concern patient and/or system status.

Abstract: The present disclosure provides a data processing method and a computing device. The data processing method is adapted to process an event data flow from a DVS to acquire image frames representing changes in a scene within different time periods. The event data flow includes coordinates of each pixel whose brightness has changed. The data processing method includes: segmenting the event data flow into a plurality of data slices at a predetermined time interval; and selecting a first quantity of data slices sequentially and performing weighted calculation on the first quantity of data slices to generate the image frames representing the changes in the scene within different time periods.

Abstract: Methods and apparatus are described that improve the reliability and configurability of sensor systems.

Abstract: The present disclosure relates to an apparatus for determining and/or monitoring the mass flow and/or flow velocity of a flowable medium through a pipeline, comprising at least one heating element, which is at least partially and/or at times in thermal contact with the medium and is operable at least at times by means of a heating signal. Furthermore, the present disclosure relates to a method for producing an apparatus of the disclosure. According to the disclosure, the heating element is at least partially surrounded in a region facing the medium by a unit comprising a material with an anisotropic thermal conductivity.

Abstract: A portable sampling device includes a sampling housing at least partially enclosing an inner chamber; at least one pumping element disposed within the inner chamber and configured to facilitate airflow through the device; and at least one gas sensor disposed within the inner chamber and configured to detect and/or characterize one or more gases in the airflow.

Abstract: An electronic circuit for detecting a change in a property of interest, the circuit comprising a voltage detector having an input and a device for providing a bias current to the input of the voltage detector, wherein the circuit is arranged such that a change in the property of interest modifies the current received at the input of the voltage detector. A change in the property of interest may modify the current by adding or subtracting a current to the bias current. The property of interest may be a signal which is combined with the bias current thereby to alter the current at the input of the voltage detector. The signal may be capacitively coupled into the bias current. The signal may be provided by a sensor, which may be a voltage generating sensor and could be an antenna, rectenna, microphone or any other suitable sensor.

Abstract: This disclosure relates to systems, media, and methods for mitigating measurement drift and improving IMU odometry measurement. In an embodiment, the system may perform operations including receiving first sensor data from at least one motion sensor; receiving 3-dimensional (3-D) motion data based on motion detected by at least one camera; inputting model input data into a machine learning model configured to generate at least one vector, the model input data being based on the received first sensor data and the received 3-D motion data; and apply the at least one vector as an offset.

Abstract: According to embodiments of the present application, a carbon dioxide sensing color changeable dye can comprise a carbon dioxide status indicator, a solvent, a polymer wherein the carbon dioxide status indicator is dispersed, an optional plasticizer, and an optional agent to facilitate mixing. The color changeable dye is a first color in the presence of a carbon dioxide rich environment and is capable of changing to a second color upon exposure to atmospheric condition for a period of time corresponding to the intended use time of a restricted, disposable or limited use product. Methods of making and using the color changeable dye and apparatuses incorporating such dye are also disclosed.

Abstract: An adaptor for use with a colour measuring device is provided where the colour measuring device has a cavity, a sensor positioned at a closed end of the cavity for measuring colour of a surface, and a rim surrounding an open end of the cavity. The adaptor includes a plate for contacting the surface and covering the rim of the colour measuring device, the plate having a portion for occluding the cavity that is transparent, referred to as the transparent portion, and a releasable coupling mechanism fixed to the plate for coupling the plate to the colour measuring device such that the transparent portion of the plate covers the sensor of the colour measuring device.

Abstract: The present disclosure describes optical and optoelectronic assemblies that, in some cases, include screen-printed micro-spacers, as well as methods for manufacturing such assemblies and modules. For example, an optoelectronic device mounted on a substrate can include an optical sub-assembly including a first optical element and a first micro-spacer on the optical element. The optical sub-assembly can be disposed over the optoelectronic device, with a first air or vacuum gap separating the first optical element from the optoelectronic device, and the first micro-spacer laterally surrounding the first air or vacuum gap.

Abstract: The present disclosure provides a signal conditioner, an antenna device and a manufacturing method. The signal conditioner includes: a microstrip line including a first portion and a second portion; an insulating layer including a first insulating layer covering the first portion; at least one electrode; a liquid crystal layer covering the microstrip line, the insulating layer, and the at least one electrode; and a common electrode line. A first end of the first portion is connected to a first end of the second portion. A second end of the first portion is connected to a second end of the second portion. The at least one electrode includes a first electrode on a side of the first insulating layer facing away from the first portion. The common electrode line is on a side of the liquid crystal layer facing away from the microstrip line.

Abstract: An ultrasonic gas sensor includes a housing, and a first ultrasonic transducer and a second ultrasonic transducer that are separately arranged at a top of an inner chamber of the housing, where the first ultrasonic transducer and the second ultrasonic transducer form a V-shaped ultrasonic transmission path in the housing; the housing is provided therein with a gas inlet channel and a gas outlet channel; an upper end of the gas inlet channel is close to the first ultrasonic transducer, and an upper end of the gas outlet channel is close to the second ultrasonic transducer, such that a measured gas flow entering a bypass tube passes through a detection area of the first ultrasonic transducer and the second ultrasonic transducer; a lower end of the gas inlet channel and a lower end of the gas outlet channel communicate with a gas sensor mount.

Abstract: A sensor for motion or gesture sensing may be configured to emit radio frequency signals such as for pulsed range gated sensing. The sensor may include a radio frequency transmitter configured to emit the pulses and a receiver configured to receive reflected ones of the emitted radio frequency signals. The received pulses may be processed by a motion channel and/or a gesture channel. The gesture channel may produce signals for further processing for identification of one or more different motion gestures such as by calculating and evaluating features from any of the amplitude, phase and frequency of the output signals of the gesture channel. The sensing apparatus may optionally serve as a monitor for evaluating user activities, such as by counting activities. The sensor may optionally serve as a user control interface for many different devices by generating control signal(s) based on identification of one or more different motion gestures.

Abstract: For an optical dot projector having multiple light emitters, a relationship is determined between locations of the light emitters with respect to a substrate of the optical dot projector and corresponding first locations of dots projected by the dot projector onto an imaging plane. An optical grating approximating one or more optical characteristics of one or more optical elements of the optical dot projector is determined based on the relationship. Second locations of dots corresponding to a replacement of the one or more optical elements of the optical dot projector by the optical grating are determined, and modified locations of the light emitters with respect to the substrate are determined based on the second locations of dots. Optical dot projectors are constructed according to the determined modified locations.

Abstract: Aspects of the of the disclosure relate to a non-contact physiological motion sensor and a monitor device that can incorporate use of the Doppler effect. A continuous wave of electromagnetic radiation can be transmitted toward one or more subjects and the Doppler-shifted received signals can be digitized and/or processed subsequently to extract information related to the cardiopulmonary motion in the one or more subjects. The extracted information can be used, for example, to determine apneic events and/or snoring events and/or to provide apnea or snoring therapy to subjects when used in conjunction with an apnea or snoring therapy device. In addition, methods of use are disclosed for sway cancellation, realization of cessation of breath, integration with multi-parameter patient monitoring systems, providing positive providing patient identification, or any combination thereof.

Abstract: A method for producing a thermal infrared sensor array in a vacuum-filled wafer-level housing with particularly small dimensions, consisting of at least two wafers, a cover wafer and a central wafer comprising multiple infrared-sensitive sensor pixels on a respective thin slotted membrane over a heat-insulating cavity is disclosed. A method for producing a high-resolution monolithic silicon micromechanical thermopile array sensor using wafer level packaging technology, wherein the sensor achieves a particularly high spatial resolution capability and a very high filling degree with very small housing dimensions, in particular a very low overall thickness, and can be inexpensively produced using standard CMOS processes. This is achieved in that the cover wafer is first rigidly mechanically connected to the provided central wafer comprising the sensor pixels with the infrared-sensitive pixels by means of wafer bonding, and the central wafer is then thinned out from the wafer rear face to a specified thickness.