Abstract: A stalk-diameter sensing system comprises a first stalk feeler, a second stalk feeler, a first sensor, a second sensor, a first damper, and a second damper. The first and second stalk feelers are deflectably mounted on opposite sides of a stalk-receiving gap that receives a stalk. The first and second stalk feelers are yieldably biased into the stalk-receiving gap for deflection upon contact with an outer surface of the stalk. The first sensor is coupled to the first stalk feeler to sense deflection of the first stalk feeler and generate a first signal. The second sensor is coupled to the second stalk feeler to sense deflection of the second stalk feeler and generate a second signal. The first damper is positioned to dampen deflection of the first stalk feeler. The second damper is positioned to dampen deflection of the second stalk feeler.

Abstract: Systems and methods for a vehicle pedal assembly and an inductive sensor assembly thereof. The inductive sensor assembly includes a rotary inductive sensor target and a printed circuit board (PCB) positioned opposite the rotary inductive sensor target. The inductive sensor assembly includes a first inductive sensor circuit defined on the PCB. The first inductive sensor circuit includes a first coil circuit including a first coil having a first electrical current in a first flow direction and a second electrical coil having a second current in a second flow direction opposite to the first flow direction. The first inductive sensor circuit is configured such that a rotation of the rotary inductive sensor target induces a change in the first electrical current and the second electrical current within the first coil and the second coil.

Abstract: Embodiments herein described using a matched filter in a measurement device that includes an atomic sensor with a co-sensor. In one embodiment, the matched filter is a non-causal filter. Embodiments herein also describe a method for producing a matched filter by determining a filter transfer function from the transfer functions of the atomic sensor and the co-sensor. The method can be used to produce a matched filter that is non-causal but can also generate a causal filter for time sensitive applications.

Abstract: A multimodality system includes first and second modalities, an optical probe, a detector, and a phantom with a known fluorescence, wherein the phantom would be used for calibration of the catheter providing accurate NIRAF values to the user using the phantom to calibrate an optical probe's measured NIRAF signal to the known fluorescence of the phantom.

Abstract: A film thickness measuring apparatus measures a film thickness of a sample during a manufacturing step. The film thickness measuring apparatus includes a lens focusing light (plasma light) generated in the manufacturing step and reflected by one surface of the sample, an inclined dichroic mirror having a transmissivity and a reflectivity changing in accordance with a wavelength in a predetermined wavelength region and separating light focused by the lens through transmission and reflection, an area sensor capturing an image of light separated by the inclined dichroic mirror, and a control apparatus estimating the film thickness of the sample on the basis of a signal from the area sensor capturing an image of light and obtaining a film thickness distribution on the one surface of the sample. Light reflected by the sample includes light having a wavelength included in the predetermined wavelength region of the inclined dichroic mirror.

Abstract: An In-Process Diameter Gage comprises a Position Detection Subsystem, preferably an optical switch and trigger, a Dimension Measurement Subsystem, preferably comprising a wheel of known diameter and a rotation encoder, and a Data Processing Subsystem, all configured and arranged to determine a dimensional property of a rotating part, such as diameter.

Abstract: A wide field-of-view sensor or projector includes a transparent substrate with one or more apertures on one side, and one or more chip stacks joined to the opposite side. Each chip stack includes a flat optics layer (e.g., metasurface), at least one spacer layer, an optional filter layer, and either an image sensor or a light source. In one example, two apertures and two corresponding chip stacks are provided; both chip stacks include image sensors but different metasurfaces and filters to capture different information from the scene. In an alternative embodiment, the two chip stacks include a light source and an image sensor, to function as a light projector and a light receiver, respectively. In other examples, two apertures and a single chip stack are provided, where the single chip stack include two metasurface and/or two filters corresponding to the two apertures.

Abstract: The present disclosure relates to a beam measuring device, a sample processor including the beam measuring device, and a method of measuring a beam using the beam measuring device. The beam measuring device includes a detection unit and a light impediment unit. The light impediment unit is located between the detection unit and a light source, and is configured to generate a shadow area on the detection unit by blocking transmission of part of a beam coming from the light source. The detection unit is configured to measure the shadow area, and to determine whether the beam is divergent or inclined with respect to a predetermined optical axis based on the measurement of the shadow area. The beam measuring device may shorten the optical detection channel and ensure the detection accuracy, thereby having a compact structure. In addition, the beam measuring device may measure divergence angle and directionality, respectively.

Abstract: The invention relates to a method for capturing and providing data for a purchase of an item of clothing, in particular an online purchase of an item of clothing, comprising the following steps: a clothed person is irradiated with terahertz radiation by means of at least one transmitter for terahertz radiation and terahertz radiation reflected by the person is received by at least one receiver for terahertz radiation, body measurement data of the person are determined from the terahertz radiation received by the at least one receiver. The invention also relates to a corresponding system.

Abstract: A method and system for scanning an outer surface of a three-dimensional object, the outer surface being reflective, the method comprising the following steps: (a) projecting a light pattern on the object with a relative movement between the light pattern and the object; (b) recording with cameras images of the light pattern reflected by the outer surface during the relative movement; (c) processing the recorded reflection images by identifying the outline of the light pattern and determining from the outline characteristics of the outer surface; wherein the light pattern comprises at least one homogenously illuminated strip extending transversally to a direction of the relative movement with at least one border with a non-straight profile so as to form a non-constant width of the strip; and in step (c) the speed of the relative movement is taken into account for determining a three-dimensional definition of the outer surface.

Abstract: An agricultural header for use with an agricultural harvester includes a frame, a row unit having a row unit frame, a first body and a second body. The first body is coupled to the row unit frame and includes a first post, a second post, and a third post defining a plurality of adjustment openings. The second body is pivotally coupled to the second post and selectively coupled to the third post via one of the plurality of adjustment openings. A first contact member and a second contact member are movably coupled to the second body. A sensing unit is disposed in contact with the first and second contact members. A stalk feeler is deflectably coupled to the sensing unit and is configured to being disposed within a plane. A movement of either contact member induces movement of the stalk feeler relative to the plane.

Abstract: This application provides a method for determining a foldable screen included angle and associated devices of the method, and relates to the field of terminal technologies.

Abstract: A surveying instrument, comprising at least one rotational movement axis such as a azimuth axis, which is for providing a positioning of the measurement direction of the surveying instrument, a rotational position encoder configured for deriving a rotational direction value around the movement axis and an acceleration sensor such as a MEMS-accelerometer for deriving a leveling for the surveying instrument and being rotatable around the rotational movement axis in different rotational positions. The instrument further comprises a mechanism designed to move the accelerometer from a first orientation in at least a second orientation, the second orientation being different to the first orientation, wherein the mechanism is designed and arranged in such a way that the targeting direction is uninfluenced by a movement of the accelerometer by the mechanism, and an evaluation unit configured to derive a calibrated leveling for the instrument.

Abstract: Disclosed is a system for simultaneously measuring surface flow velocities at multiple points in a stream using a digital beamforming radar for simultaneously measuring surface flow velocities at several points in a river or a stream using multiple beams generated through a digital beamforming algorithm, and creating a flow velocity profile for the entire river or stream width in addition to a flow velocity at a specific point based thereon.

Abstract: A dual-shell architecture and methods of fabrication of fused quartz resonators is disclosed. The architecture may include two encapsulated and concentric cavities using plasma-activated wafer bonding followed by the high-temperature glassblowing. The dual-shell architecture can provide a protective shield as well as a “fixed-fixed” anchor for the sensing element of the resonators. Structures can be instrumented to operate as a resonator, a gyroscope, or other vibratory sensor and for precision operation in a harsh environment. Methods for fabricating a dual-shell resonator structure can include pre-etching cavities on a cap wafer, pre-etching cavities on a device wafer, bonding the device wafer to a substrate wafer to form a substrate pair and aligning and bonding the cap wafer to the substrate pair to form a wafer stack with aligned cavities including a cap cavity and a device cavity. The wafer stack may be glassblown to form a dual-shell structure.

Abstract: The present disclosure relates to integration of integrated photonics-based optical gyroscopes and fiber-based optical gyroscopes into portable apparatuses that may include compass features. Novel small-footprint modularized fully integrated photonics optical gyroscopes are used for non-critical axes. However, for at least one critical axis, a fiber-optic gyroscope can be used to provide bias stability below 0.1°/Hr, which is directly correlated to predicting positional accuracy in the centimeter range. The positional accuracy results from the compassing ability of the gyroscope (referred to as gyrocompass) to calculate direction of heading using the earth's rotation.

Abstract: This disclosure relates to an inertial sensor, and to the field of embedded designs. The inertial sensor includes at least one inertial measurement unit; a controller configured to read measurement data of the at least one inertial measurement unit, wherein the at least one inertial measurement unit is couplable to or decouplable from the controller; and a plurality of sets of interfaces, wherein each set of interfaces has a first end electrically connected with the controller and a second end electrically connected with one of the at least one inertial measurement unit.

Abstract: Methods and systems are provided for detecting a trip of a user in a vehicle. A method includes: receiving by a processor of a user device, device scan data from one or more communication enabled devices; determining, by the processor, whether the devices listed in the device scan data is a vehicle device; in response to the determining, identifying, by the processor, the vehicle device as a found device; determining, by the processor, whether the found device is listed in a known device list; and generating, by the processor, at least one of a trip start signal and a trip end signal based on whether the found device is listed in the known device list.

Abstract: A method includes: when detecting a road recognition request, a first device sends, by using a DMSDP service, a control command to an entity camera corresponding to a virtual camera HAL, where the control command is for controlling the entity camera to capture a current image (S50); the first device receives, by using the DMSDP service, the current image returned by the entity camera in response to the control command; and the first device recognizes, based on the current image and road information that is obtained by a local navigation application, a road on which the first device is located.

Abstract: The disclosure relates to a method for operating a sensor circuit in a motor vehicle, wherein a processor in the sensor circuit receives a reflection signal from an environment of the motor vehicle by way of an environmental sensor and ascertains from the reflection signal a particular detection point, which describes a relative position of a reflection event with respect to the motor vehicle. The disclosure involves the processor using pattern data to establish a surface region in the environment and a category of the surface region and checking for the detection point whether it lies in the surface region, and the detection point which lies in a surface region is categorized according to the pattern data of the surface region and the detection point is filtered according to its categorization by way of a filtering action for trajectory planning of a driving trajectory of the motor vehicle.

Abstract: Aspects of the present disclosure provide techniques for training a machine-learning model to compress map data for use online by an autonomous vehicle and techniques for compressing map data using the trained machine-learning model. A system includes a computing device configured to deploy a simulation environment initiating an instance of a virtual vehicle, execute iterations of a simulation of the virtual vehicle, wherein each iteration: deploys a set of map data compressed by the machine-learning compression model and causes the virtual vehicle to execute control operations based on the deployed set of map data, evaluate performance of the executed control operations by the virtual vehicle based on the compressed map data for each iteration, and train the machine-learning compression model to compress map data such that the evaluated performance of the executed control operations by the virtual vehicle exceeds a performance threshold.

Abstract: A vehicle routing platform may store, in a first data structure, a value at a logical index for each pair of locations of a plurality of pairs of locations. The logical index, for a pair of locations, indicates whether a travel time has been determined. The vehicle routing platform may store, in a second data structure, an offset index for each predetermined logical index of one or more predetermined logical indexes of the first data structure. The offset index, for a predetermined logical index, may be based on a quantity of logical indexes preceding the predetermined logical index in the first data structure. The vehicle routing platform may store, in a third data structure, travel times between pairs of locations of a portion of the plurality of pairs of locations. The vehicle routing platform may determine a travel time, between a pair of locations, using the data structures.

Abstract: A battery charge management server for an electric vehicle may include a storage unit configured to store and update transportation data, a communication unit configured to receive information on a destination and information on an electric vehicle battery from a user, and a processor configured to calculate a driving route and a transportation time to the destination based on the transportation data and the information on the destination, predict a remaining battery capacity of the electric vehicle battery after reaching the destination based on the driving route, the transportation time, and the electric vehicle battery, and providing the predicted remaining battery capacity.

Abstract: Provided are methods for graph forward search exploration, which can include detecting a plurality of obstacles along a first trajectory of a vehicle. Some methods described also include determining a plurality of valid combinations of a plurality of trajectories to handle the plurality of obstacles. Some methods described also include generating a reduced decision tree based at least on the valid combinations of the plurality of trajectories by at least excluding a second trajectory of the plurality of trajectories associated with an obstacle of a plurality of obstacles based on a position of the obstacle being outside of a corridor defined by a spatial range and/or a temporal range. Some methods described also include selecting an optimal trajectory of the vehicle from the plurality of trajectories of the reduced decision tree. Systems and computer program products are also provided.

Abstract: A method includes receiving, at one or more processors of a vehicle, user speech input, the user speech input including a navigation command and a description of a photograph. The method also includes transmitting, via a local network, query data based on the user speech input to a portable computing device associated with the vehicle to initiate an image search based on the user speech input. The method further includes receiving, at the one or more processors of the vehicle from the portable computing device via the local network, location data indicating a location associated with the photograph and setting, by the one or more processors of the vehicle, a navigation waypoint based on the location data and based on the navigation command.

Abstract: Various embodiments of the present disclosure provide a system and method for lane marking localization that may be utilized by autonomous or semi-autonomous vehicles traveling within the lane. In the embodiment, the system comprises a locating device adapted to determine the vehicle's geographic location; a database; a region map; a response map; a camera; and a computer connected to the locating device, database, and camera, wherein the computer is adapted to: receive the region map, wherein the region map corresponds to a specified geographic location; generate the response map by receiving information form the camera, the information relating to the environment in which the vehicle is located; identifying lane markers observed by the camera; and plotting identified lane markers on the response map; compare the response map to the region map; and generate a predicted vehicle location based on the comparison of the response map and region map.

Abstract: Systems and methods for optimizing routes and water usage are disclosed herein. An example method includes determining calendar data for a traveler, the calendar data including trip information for a trip, determining a current water supply for the traveler, determining water generation capability of a vehicle used by the traveler for the trip, predictively determining a water estimate for the trip, determining when the water supply and the water generation capability substantially correspond to the water estimate, and providing an alert to the traveler when the water supply and the water generation capability are insufficient relative to the water estimate.

Abstract: In one embodiment, a method includes receiving sensor data associated with an object external to a vehicle. The sensor data includes a sequence of data packets. Each data packet corresponds to a time frame in a sequence of time frames. The method includes determining a classification of the object based at least on the sensor data, determining that a particular data packet corresponding to a particular time frame in the sequence of time frames is corrupt or missing, generating a replacement data packet based on one or more data packets that correspond to one or more time frames adjacent to the particular time frame, generating a sequence of visual representations of the object corresponding to the sequence of time frames. At least one visual representation in the sequence of visual representations corresponding to the particular time frame is generated based on the replacement data packet.

Abstract: The present disclosure relates to map generation methods and map generation apparatuses, the methods include: loading a base class of a server, and calling an API of the server to process geographic information of a target area, to determine a height and width of the target area and coordinates of one or more feature points in the target area; determining a container height and width; determining a canvas height and width according to the height and width, and the container height and width; determining a ratio of a distance to pixels in the canvas; determining pixel coordinates of the feature points in the canvas according to the ratio and the coordinates; and generating a map of the target area in the canvas according to the pixel coordinates.

Abstract: A parking system for a vehicle including a braking system, including one or more cameras capturing image data representative of an environment surrounding the vehicle, and a display located within an interior cabin of the vehicle. The display shows image data representative of the environment surrounding the vehicle. The parking system also includes one or more controllers in electronic communication with the one or more cameras and the display. The one or more controllers execute instructions to determine the user is about to execute a parking maneuver based on the image data collected by the one or more cameras. In response to determining the user is about to execute the parking maneuver, the one or more controllers instruct the display to show the image data representative of the environment surrounding the vehicle.

Abstract: A system, a method, and a computer program product may be provided for determining a rooftop type. The system may be configured to obtain location information associated with a UAV, and obtain a first set of images and building data associated with a building in proximity of the UAV based on the location information. The system is configured to extract a set of rooftop features for a rooftop of the building using the first set of images and the building data. The set of rooftop features comprises at least a rooftop type and a durability parameter for the rooftop. The system is configured to store the set of rooftop features in conjunction with the building data for the building in a map database.

Abstract: A method of correcting a GPS vehicle trajectory of a vehicle on a roadway for a high-definition map is provided. The method comprises receiving first bitmap data from a first sensor of a first vehicle to create a plurality of first multi-layer bitmaps for the first vehicle using the first bitmap data and receiving second bitmap data from a plurality of second sensors of a plurality of second vehicles to create a plurality of second multi-layer bitmaps. The method further comprises creating first probability density bitmaps and an overall probability density bitmap with a probability density estimation, and matching an image template from each of the first probability density bitmaps with the overall probability density bitmap to define match results. The method further comprises combining the match results to define combined utility values and determining the maximal utility value with the combined utility values.

Abstract: Provided are methods and systems for aggregating data associated with various geographic areas for trajectory determination and high definition map generation. The methods and systems may include obtaining first data associated with a first area that is external to a vehicle, converting the first data associated with the first area from a first format to a second format, transmitting the first data that is converted and a query associated with a second area, receiving second data specific to the second area responsive to the query, aggregating the second data specific to the second area with the first data, determining, using the at least one processor, a trajectory of the vehicle within a physical space based on the aggregating of the second data with the first data, and/or generating a graphical representation for use by a display of the vehicle based on the second data that is aggregated with the first data.

Abstract: A location estimation system includes at least four directional sensors that each acquire data used to estimate a location of a mobile object; a sensor assignment section that assigns one of the at least four sensors as a first sensor, and assigns, as a second sensor, one of the at least four sensors that is adjacent to the first sensor and situated on one of sides of the first sensor; an environment map generator that generates an environment map on the basis of first sensor data that is data acquired by the first sensor and on the basis of second sensor data that is data acquired by the second sensor; a first location estimator that estimates the location in the environment map on the basis of the first sensor data to generate a first sensor estimated location; a second location estimator that estimates the location in the environment map on the basis of the second sensor data to generate a second sensor estimated location; and a location integration section that integrates the first sensor estimated locati

Abstract: Aspects of the disclosure relate to generating scouting objectives in order to update map information used to control a fleet of vehicles in an autonomous driving mode. For instance, a notification from a vehicle of the fleet identifying a feature and a location of the feature may be received. A first bound for a scouting area may be identified based on the location of the feature. A second bound for the scouting area may be identified based on a lane closest to the feature. A scouting objective may be generated for the feature based on the first bound and the second bound.

Abstract: A system and a method include a control unit configured to monitor one or more values of one or more aircraft at one or more airports, and compare the one or more values with one or more attributes of one or more airport maps associated with the one or more airports to determine accuracy of the one or more airport maps.

Abstract: A method and a system for tracking a concentration of pollution elements in air are disclosed. The system includes a plurality of air pollutant monitoring stations configured to obtain data from a plurality of air samples and an information logger that communicates with the plurality of the air pollutant monitoring stations and that is configured to collect and organize the data obtained from the plurality of the air pollutant monitoring stations in the real time or periodically. Further, a data storage is engaged with the information logger and stores the collected data into a relational database, creates triggers for instances when air pollution parameters exceed a given limit value, and triggers an alert.

Abstract: The present disclosure discloses a method for power saving management of a smart gas meter based on smart gas and an Internet of Things system. The method includes: obtaining current power by a power detection unit; obtaining gas base data for of a preset time period from a built-in storage; sending the current power and the gas base data to a smart gas equipment management platform, and obtaining a recommended energy consumption interval of the smart gas meter and an expected usage frequency for a future time period of the smart gas meter from the smart gas equipment management platform; and determining data collection characteristics and data upload characteristics for the future time period based on the recommended energy consumption interval and the expected usage frequency; wherein the preset time interval is determined based on the current power.

Abstract: A magnetic scale includes a magnetic scale body and an adhesive layer. The magnetic scale body includes a magnetic substance. The adhesive layer includes a hot-melt adhesive. The adhesive layer is attached to the magnetic scale body.

Abstract: A method of determining a linear or angular position of a magnetic sensor device relative to a magnetic source, or vice versa, the sensor device includes at least four magnetic sensor elements. The method involves the steps of: a) determining a first magnetic field gradient; b) determining a second magnetic field gradient; c) determining a ratio of the first and second magnetic field gradient; d) converting the ratio into a position; while matching signal paths of the magnetic sensor elements so as to improve signal-to-noise.

Abstract: A sensor assembly for a rotary sensor is provided. The sensor assembly comprises a sensor housing, a sensor shield, and a sensor. The sensor housing defines a cavity. The sensor shield is disposed within the cavity of the sensor housing and defines a slot along a length of the sensor shield. The sensor shield is composed of a highly permeable material. The sensor is disposed within the cavity and at least a portion of the sensor is positioned within the slot of the sensor shield. The sensor comprises a printed circuit board having a plurality of sensor elements disposed along an inner circumference of the printed circuit board in a radially outward direction, and each sensor element is positioned at an equal distance from each other.

Abstract: A capacitive sensor may include a stretchable substrate, a first conductor assembly disposed on the substrate, a second conductor assembly disposed on the substrate and above the first conductor, and a redundancy member coupled to the one of the conductor assemblies. A capacitive sensor may include a first serpentine conductor assembly disposed on the substrate and having first and second terminal ends coupled to the substrate, a second serpentine conductor assembly disposed above and overlapping the first conductor assembly and having first and second terminal ends coupled to the substrate, wherein each of the terminal ends of the first conductor assembly is offset from the corresponding terminal ends of the second conductor assemblies. A sensor system may include a stretchable sensor, an electronics module coupled to the stretchable sensor, and a strain relief member extending from the stretchable sensor and coupling to the electronics module.

Abstract: Provided is a portable device which make it possible to facilitate analysis, in cooperation with an external system, on data obtained by optical fiber sensing. A portable device comprises: a sensing unit configured to execute optical fiber sensing using an optical fiber cable; an analysis unit configured to execute primary analysis processing on sensing data obtained by the optical fiber sensing; a communication unit configured to transmit data containing the results of the primary analysis processing to an external analysis unit configured to execute, outside the portable device, secondary analysis processing based on the results of the primary analysis processing; and a housing which accommodates the sensing unit, the analysis unit, and the communication unit.

Abstract: A distributed optical fibre sensor to measure one or more parameters of an environment as functions of position along a sensing optical fibre passing through the environment, and determines, measures or calculates an OTDR trace or attenuation profile of a sensing optical fibre in a distributed optical fibre sensor. The OTDR trace is to monitored to provide an indicia of properties of the sensing optical fibre in order to determine if the performance of the distributed optical fibre sensor in accurately measuring the desired environmental parameters is compromised. This allows adjustment of operation parameters of the distributed optical fibre sensor to maintain the performance at acceptable levels, or to automatically control the distributed optical fibre sensor in order to at least partly compensate for the changing properties. A distributed optical fibre sensor having such capability is also disclosed.

Abstract: There is provided an optical encoder with alignable relative positions between elements including an encoding medium, a sensor package and a memory. The sensor package includes a photodiode array and two alignment photodiodes opposite to the encoding medium. The memory records an alignment pattern associated with output signals of the two alignment photodiodes when the encoding medium and the sensor package are at nominal operating positions. When the encoding medium and the sensor package are not at the nominal operating positions, the relative position alignment is performed by adjusting current relative positions between the encoding medium and the sensor package to cause a current pattern associated with output signals of the two alignment photodiodes to be identical to the alignment pattern.

Abstract: A mounting unit for an electronic terminal has a mounting body with a support surface for the electronic terminal and at least one contact surface for at least one-sided contact with a support element. Further, the mounting unit has at least one fastening element for attaching the mounting unit to the support element, wherein the support surface has an angle of inclination to the at least one contact surface, wherein an electronic terminal is rotatably arranged about an axis of rotation on the support surface, and wherein at least one pivotable locking element is provided by means of which the electronic terminal is lockable into its position. Furthermore, an electronic terminal with such a mounting unit is disclosed.

Abstract: An automated meter testing system that includes a fluid inlet valve fluidly coupled both to a fluid source and an inlet on the at least one meter. The fluid source provides fluid pressure to move fluid through the at least one meter. A flow control valve is fluidly coupled to the at least one meter opposite the fluid inlet valve. A valve controller that operates the flow control valve. A controller is electrically connected to the valve controller. The controller sends at least one signal to the valve controller to incrementally open or restrict the flow control valve to increase or decrease a flow rate of the fluid through the at least one meter.

Abstract: The disclosure discloses a swirler-type gas-liquid two-phase flow metering device, mainly including a swirler, a capacitance probe module, a hot-wire probe module, a hub and a data acquisition computer. A flow measurement method using the gas-liquid two-phase flow metering device includes: adjusting, by the swirler, flow patterns of an incoming gas-liquid two-phase flow into a uniform annular flow, measuring gas and liquid phase distribution by the capacitance probe module, and measuring gas and liquid phase flow velocity distribution by the hot-wire probe, and volumetric flow rates of gas, thereby obtaining liquid phases according to flow areas and average flow velocities of the gas and liquid phases. Compared with the existing multiphase flowmeter, the gas-liquid two-phase flow metering device of the disclosure has the advantages of small size, compact structure, small resistance loss, wide measurement range, high measurement accuracy, etc.

Abstract: A device for determining a flow rate of a fluid flow, includes a fluid chamber configured to receive a portion of a fluid from the fluid flow, through an inlet fluid port. Further, the device includes a membrane configured to deform in response to the receipt of the portion of the fluid into the fluid chamber. The device further includes a sensor provided in a second chamber provided adjacent to the membrane on a side opposite to a side of the fluid chamber. The sensor is configured to detect deformation of the membrane and generate an input signal associated with the detected deformation of the membrane. Also, the device includes an electronic circuit board operatively coupled to the sensor. The electronic circuit board is configured to receive the input signal from the sensor and provide an output signal in correlation with the flow rate of the fluid flow.

Abstract: To enable accurate measurement when a flow rate is measured using an ultrasonic signal. An ultrasonic flowmeter includes a first ultrasonic element and a second ultrasonic element, a damping pipe, a first ultrasonic propagator and a second ultrasonic propagator, which are arranged outside the damping pipe, and a flow rate measurement unit that measures a flow rate based on an ultrasonic signal transmitted and received between the first ultrasonic element and the second ultrasonic element. The first ultrasonic element, the first ultrasonic propagator, the damping pipe, the second ultrasonic element, and the second ultrasonic propagator are accommodated in a housing.