Abstract: An inertial measurement system comprising: a first, roll gyro with an axis oriented substantially parallel to the spin axis of the projectile; a second gyro and a third gyro with axes arranged with respect to the roll gyro; a controller, arranged to: compute a current projectile attitude from the outputs of the first, second and third gyros; operate a Kalman filter that receives a plurality of measurement inputs including at least roll angle, pitch angle and yaw angle and that outputs at least a roll angle error; initialise the Kalman filter with a roll angle error uncertainty representative of a substantially unknown roll angle; generate at least one pseudo-measurement from stored expected flight data; provide said pseudo-measurement(s) to the corresponding measurement input of the Kalman filter; and apply the roll angle error from the Kalman filter as a correction to the roll angle.

Abstract: A method and mobile transceiver with adaptive monitoring are provided. In accordance with one embodiment, there is provided a method of operating a mobile transceiver, comprising: waking up the mobile transceiver from a low power mode in response to a wakeup event; determining a waypoint in a travel itinerary corresponding to the wakeup event, the travel itinerary defining a number of waypoints including an origin endpoint and destination endpoint; performing an action associated with the wakeup event; determining a wakeup frequency associated with the determined waypoint; and setting a wakeup frequency of one or more subsequent wakeup events in accordance with the determined wakeup frequency.

Abstract: A method of automated spatial worksite referencing of a networked electronic measuring device with awareness of a rough location information of itself at a worksite location. The method includes querying a database for construction plan information about the rough location and its vicinity and about an actual work progress, computing an actual-state nominal spatial information at the rough location and its vicinity, automatically determining of a fine location of the networked electronic measuring device at the worksite location, by at least one iteration of: automatically determining a measurement point in the vicinity and measuring the measurement point using measurement functionality of the device, and then automatically assimilating the measurement point to the actual-state nominal spatial information and thereby determining the fine location information.

Abstract: A method of locating a maintenance vehicle in a solar power field can include driving the maintenance vehicle on a track. A plurality of flags are coupled to the track at spaced locations. Each flag can include an ID tag and a contact target or a non-contact target. The maintenance vehicle can include an ID tag reader and a sensor configured to detect the contact target or the non-contact target. The method also can include driving the maintenance vehicle along the track to a position adjacent to a flag of the plurality of flags, reading by the ID tag reader the ID tag of that flag, and sensing by the sensor the contact target or the non-contact target. The method also can include, based on the reading and the sensing, identifying a unique location of the maintenance vehicle in the solar power field.

Abstract: A navigation device is disclosed that provides navigational guidance to boats needing to cross a boundary line at a milestone event time. Port and starboard laylines and guidelines may be displayed with the boundary line using wind direction data. The port and starboard layline angles may change with the wind direction, while their lengths may represent a distance traversed by the boat tacking at the port and starboard layline angles for a target time period at a target speed. A predictor line may be displayed extending from the boat in the direction in which the boat is traveling and may have a length indicating a distance traversed by the boat at its current speed until the milestone event time. The predictor line length and color may provide feedback regarding whether the boat will cross the boundary too early or too late given its current speed and direction.

Abstract: An apparatus determines, based on a geometrical criterion and at least one map object of plurality of map objects, whether a map element of a first map element type or a second map element type shall be created. Elements of the first map element type are intended to be usable for applying a constraint to a user position and elements of the second map element type are intended to be less usable for applying a constraint to a user position compared to the elements of the first map element type. The apparatus also creates a map element according to the determined map element type. The created map element is associated with the at least one map object.

Abstract: The present invention discloses a charger, and a method, an apparatus and a system for finding charger based on map constructing, which are performed by means of: when a map for an area to be localized with a charger arranged in is constructed in real time by a mobile electronic device, the constructed map is updated based on coordinate values of a shift position of the charger when the mobile electronic device receives the coordinate values of the shift position of the charger transmitted by the charger which has shifted. Therefore, when the charger has shifted, it only needs to update the position of the charger on the constructed map without reconstructing map, which has the advantages of low cost, simple operation and effective technical results.

Abstract: Systems, apparatuses and methods are provided herein for tracking carts in a shopping space. A system for tracking carts in a shopping space comprises: a sound sensor array, a cart location database storing location information and sound profiles associated with a plurality of shopping cart identifiers, and a control circuit configured to: identify a cart sound made by a movement of a shopping cart traveling in the shopping space, determine a current location of the shopping cart based on the cart sound, match the shopping cart to a shopping cart identifier in the cart location database, update the location information associated the shopping cart identifier in the cart location database based on the current location of the shopping cart; and update the sound profile of the shopping cart identifier based on the cart sound captured by the sound sensor array.

Abstract: A wearable device is configured with various sensory devices that recurrently monitor and gather data for a physical environment surrounding a user to help locate and track real-world objects. The various heterogeneous sensory devices digitize objects and the physical world. Each sensory device is configured with a threshold data change, in which, when the data picked up by one or more sensory devices surpasses the threshold, a query is performed on each sensor graph or sensory device. The queried sensor graph data is stored within a node in a spatial graph, in which nodes are connected to each other using edges to create spatial relationships between objects and spaces. Objects can be uploaded into an object graph associated with the spatial graph, in which the objects are digitized with each of the available sensors. This digital information can be subsequently used to, for example, locate the object.

Abstract: System, methods, and other embodiments described herein relate to localizing a vehicle on a roadway. In one embodiment, a method includes, in response to detecting one or more indicators of a roadway signature within a reflected signal from the roadway, acquiring a fix on the roadway signature as a function of the one or more indicators that identify at least a segment of the roadway signature. The method includes localizing the vehicle on the roadway by correlating the roadway signature with a signature mapping that identifies a location for the segment of the roadway signature on the roadway.

Abstract: A method executed by a computer includes outputting, by a processor, information representing a position of a spot that is ahead, in a traveling direction of a vehicle, of an occurrence spot on the basis of a position of the occurrence spot and the traveling direction of the vehicle at an occurrence time of an incident of a sudden stepping on a brake, the occurrence spot being of the incident of the sudden stepping on the brake and the position of the occurrence spot and the traveling direction of the vehicle having been determined on the basis of acceleration and a position measured by a sensor provided to the vehicle.

Abstract: An electronic apparatus includes a processor and a memory. The processor executes a program stored in the memory to perform operations including: acquiring position information of a user; specifying a movement state of the user; and determining appropriateness/inappropriateness of the acquired position information using a determination program according to the movement state.

Abstract: Systems and methods are disclosed for calculating a risk index for one or more areas (e.g., roads, intersections, bridges, and other transportation infrastructure). For instance, high risk intersections may be identified and mapped from historic auto insurance claim data. High risk intersections may be identified because of an excessive number of vehicle collisions there, and/or an amount and extent of vehicle damage, personal injuries, and/or insurance liability expenses associated with, or resulting from, the vehicle collisions at those locations. Risk indices for various areas may be compared to one another, enabling comparison of the relative riskiness of the areas. In some embodiments, a risk map may be generated to visually depict one or more risk indices for areas within a depicted region. The risk map may be used to quickly identify the riskiest area(s) in the region, and to notify government bodies to facilitate repairs and improve road safety.

Abstract: An apparatus, including a housing, microphone, speaker, camera, memory or database which stores information regarding a travel schedule or itinerary, global positioning device, controller, and a transmitter. The controller is specially programmed to detect a deviation of the apparatus from the travel schedule or itinerary or to detect an absence of, or a leaving of, the apparatus from an expected location on the travel schedule or itinerary, and, if the controller detects a deviation of the apparatus from the travel schedule or itinerary or detects an absence of, or a leaving of, the apparatus from the expected location on the travel schedule or itinerary, the controller generates a travel route deviation message. The transmitter transmits the travel route deviation message to a first communication device.

Abstract: An apparatus includes a processor configured to send detour instructions defining a travel path that avoids a location of the traffic event. The detour instructions may be sent responsive to receiving notification of a traffic event. The processor is further configured to update the detour instructions to alter the travel path based on the proposed vehicle routes such that autonomous vehicles operate to follow the altered travel path. The update may be responsive to proposed vehicle routes different than the travel path received from vehicles in a vicinity of the location.

Abstract: A method and system for arranging service provider selection are described. A network computer system can establish a set of criteria to determine whether to display, before actually receiving an acceptance from a service provider, an assumed acceptance or a likely service provider to provide on-demand services in response to data corresponding to a request for service sent from a computing device of a user. For example, the network computer system can predetermine a likely service provider or number of matching service providers and display this information to the user in lieu of a “requesting” screen.

Abstract: Aspects of the present disclosure provide a system for managing the energy resources of a vehicle, such as an electric car. A destination location for the vehicle, as well as a desired amount of energy that should remain in the vehicle upon arrival at the destination location, is determined. Based on this information, the system generates a set of candidate paths along which the vehicle can navigate to the destination location such that, upon arrival, the vehicle has the desired amount of energy in reserve. One of those paths is selected, and while travelling to the destination location, a database with information regarding its energy consumption along the selected path. So updated, the system can generate more accurate candidate paths with respect to an estimated energy consumption for the vehicle.

Abstract: Techniques for providing a trajectory route to multiple geographical locations of interest are described. This disclosure describes receiving global position system (GPS) logs associated with respective individual devices, each of the GPS logs including trajectories connecting a set of geographical locations previously visited by an individual of a respective individual device. A trajectory route service receives a request for a trajectory connecting a set of geographical locations of interest specified by a user. The trajectory route service calculates a proximal similarity between (1) the set of geographical locations of interest specified by the user, and (2) respective sets of geographical locations from the GPS logs. The trajectory route service constructs the requested trajectory with use of at least one of the trajectories from the GPS logs determined at least in part according to the calculated proximal similarities.

Abstract: Provided is an information processing device including: an information acquisition unit configured to acquire action information of a user, and space information and time information that are associated with the action information; and a map representation processing unit configured to consider the time information when executing map representation of the action information on a basis of the space information.

Abstract: A method and system is provided for vehicle speed profile generation. The method is performed by receiving data pertaining to driver characteristics and characteristics of trips taken by said driver, creating driver profile by generating skill and aggression parameters for said driver, constructing trip parameters pertaining to said trips taken by the driver by processing the skill and aggression parameters, constructing acceleration dataset for said trips, constructing speed values from the acceleration dataset and processing the speed values for anomalies.

Abstract: A method is provided to generate a route between an origin and a destination using historical travel times between segments of a road network map. Methods may include accessing a memory configured to store road network data segmented into tiles represented by quadkeys; determining a travel time between any two quadkeys of the stored road network data; receiving an origin and a destination within a road network corresponding to the road network data; calculating a route between the origin and the destination using the travel time between quadkeys that can be traversed from the origin to the destination; generating route guidance for the route between the origin and the destination; and providing the route guidance to a user indicating the route between the origin and the destination. The travel time between any two quadkeys may be determined based on historical travel times between the respective two quadkeys.

Abstract: Embodiments of the present disclosure relate to a method and a system for determining a route from a motor vehicle location to a destination, in which a vehicle control unit transmits an emergency call to a recipient of a central exchange. In the process, a computing device at the central exchange determines the route to the destination. In the process, the computing device of the central exchange takes into account, in selecting the destination, a first time period which the motor vehicle requires to traverse the route and a second time period which a rescue vehicle requires to reach the destination. The computing device selects the destination such that a sum of the two time periods is minimal.

Abstract: A speech guidance device includes; a guidance object determining unit for outputting a guidance object to which a visual line of a user is guided; a visual recognition object detecting unit for detecting a visual recognition object which the user is viewing from information indicating a direction of the visual line of the user; a difference detecting unit for detecting a difference between an attribute of the visual recognition object and an attribute of the guidance object; a generating unit for generating a guidance sentence including the attribute of the guidance object; and a synthesizing unit for, when there is a difference between the attribute of the guidance object included in the guidance sentence and the attribute of the visual recognition object, synthesizing and outputting speech of the guidance sentence emphasizing a word of the attribute having the difference.

Abstract: A method performed by an electronic device is described. The method includes obtaining one or more trip objectives. The method also includes obtaining one or more evaluation bases. The method further includes identifying an association between at least one site and the one or more trip objectives. The method additionally includes obtaining sensor data from the at least one site. The sensor data includes at least image data. The method also includes performing analysis on the image data to determine dynamic destination information corresponding to the at least one site. The method further includes performing trip planning based on the dynamic destination information, the one or more trip objectives, and the one or more evaluation bases. The method additionally includes providing one or more suggested routes based on the trip planning.

Abstract: A method and device for monitoring an avionics software application via its execution duration, related computer program and avionics system are disclosed. In one aspect, the method, executed on a platform hosting an operating system, is implemented by an electronic monitoring device. The avionics software application includes one or several software processing operations to be executed, the platform is configured to be on board an aircraft. The method includes: monitoring the execution duration of the avionics software application, through the verification, upon expiration of at least one predefined execution times, of the completion of the execution of at least one software processing operation of the avionics software application; and updating a status of the avionics software application based on the monitoring of the execution duration of the avionics software application.

Abstract: A circuit for obtaining information on a physical quantity according to an embodiment includes a sensor arrangement sensitive to the physical quantity, at least one further sensor element sensitive to the physical quantity and a supply circuit configured to provide the sensor arrangement with a supply signal comprising a supply voltage controlled by the supply circuit in a closed-loop configuration. The supply circuit is further configured to provide the at least one further sensor element with a further supply signal comprising a further supply current such that a magnitude of the further supply current fulfills a predetermined relationship with a magnitude of a supply current of the supply signal. As a consequence, it may be possible to improve a trade-off between an improved compensation of variations, simplifying an implementation, simplifying the manufacturing, simplifying the sensing and providing stable sensing conditions.

Abstract: Novel tools and techniques for a meter collar system for powerline communications are provided. The system includes a meter socket coupled to a utility power cable and a supply cable of the customer premises, and a meter collar device coupled to the meter socket. The meter collar device may include a powerline interface coupled to one or more load lines of the subscriber cable, and a line transceiver, coupled to the powerline interface. A physical layer transceiver may be coupled to a subscriber line. The meter collar device may be configured to receive, from the physical layer transceiver, a first data signal from the subscriber line, and convert the first data signal into a powerline data signal for transmission over the one or more load lines, and transmit the powerline data signal, via the line transceiver, over the one or more load lines.

Abstract: A rotation detecting device includes first to fourth magneto-resistive elements that are provided on a first substrate to constitute a bridge circuit, a detection circuit provided on a second substrate, first to fourth wirings each connecting between the detection circuit and respective one of ends of the first to fourth magneto-resistive elements, first to fourth nodes provided on the second substrate, and first and second amplifiers provided on the second substrate. The first node combines signals on the first and second wirings. The second node combines signals on the third and fourth wirings. The first and second amplifiers amplify signals at the first and second nodes, respectively.

Abstract: Some embodiments include a method for measuring the position of a camera lens carrier moveable by an autofocus actuator. In some embodiments, the method includes generating a measurement of a magnetic field resulting at least in part from the one or more position sensor magnets. In some embodiments, the generating the measurement of the magnetic field includes measuring a magnetic field component created at least in part by the one or more position sensor magnets fixedly mounted to the camera lens carrier. In some embodiments, the camera lens carrier is moveably coupled to a substrate by the autofocus actuator to provide motion in a direction orthogonal to the substrate. In some embodiments, the generating the measurement of the magnetic field component includes measuring the magnetic field component at a sensor fixedly mounted to the substrate of the autofocus actuator.

Abstract: A magnet-based angular displacement measuring system for detecting a rotational movement of a driveshaft. The magnet-based angular displacement measuring system includes the driveshaft which includes an axial first shaft end region. The axial first shaft end region includes a magnetically non-conductive material. An exciter unit is rotationally coupled to the axial first shaft end region of the driveshaft. A stationary sensor unit functionally cooperates with the exciter unit to detect a rotational movement of the driveshaft.

Abstract: In one aspect, an integrated circuit (IC) includes a magnetic field sensor to detect speed and direction of angular rotation of a rotating magnetic structure. The magnetic field sensor includes at least two magnetic field sensing elements configured to sense changes in a magnetic field caused by rotation of the magnetic structure. The IC also includes an output port configured to provide an output signal of the magnetic field sensor. The frequency of the output signal indicates the speed and the direction or indicates a fault.

Abstract: A rotary position sensor comprises a magnetic sensor for generating two independent signals indicative of at least two different order magnetic fields, and a magnetic assembly forming a first magnetic field component having a first order at the location of the magnetic sensor, in which the first magnetic field component is rotatable relative to the magnetic sensor by receiving a first angle. The magnetic assembly is also adapted for forming a second magnetic field component having a second order, different from the first order, at the location of the magnetic sensor, in which the second magnetic field component is rotatable relative to the magnetic sensor and the first magnetic assembly by receiving a second angle. The position sensor comprises a processor for combining the two independent signals to produce a unique system state representative of the first and second angle.

Abstract: An integrated circuit for error detection comprises an input for receiving two signals, in which a first signal is representative of a physical quantity in a first range and a second signal is representative of the physical quantity in a second range. The first range and second range are different ranges that overlap. The circuit comprises a processor configured to detect an inconsistency between the two signals by taking said first and second range into account, in which this inconsistency is indicative of an error.

Abstract: An actuator in a HVAC system includes an inductive sensor, a conductive target, and a controller. The conductive target has multiple different portions that become aligned with the inductive sensor as a position of the actuator changes. Each of the multiple different portions have a different inductance. The controller receives a signal from the inductive sensor indicating an observed inductance of the portion of the conductive target aligned with the inductive sensor. The controller uses a stored relationship between the observed inductance and the position of the actuator to determine the position of the actuator based on the observed inductance. The controller operates the actuator to change the position of the actuator based on the determined position.

Abstract: The invention relates to a method for determining the position that a magnet has at a time of measurement relative to a row of sensors, wherein a first sensor signal is generated by the first sensor, the value of which depends on the position of the magnet relative to the first sensor, and a second sensor signal is generated by the second sensor, the value of which, depends on the position of the magnet relative to the second sensor. First, the value that the first sensor signal has generated is compared with a first reference value. Second, the value that the second sensor signal has generated is compared with a second reference value. A relative value is formed from the value that the first sensor signal and the value that the second sensor signal. Third, this relative value is compared with a third reference value. From these three steps, the leading signal is chosen to determine the position of the magnet relative to the row of sensors.

Abstract: The electromagnetic induction type position detector includes a scale having a plurality of gradation coils, a head having a transmission unit and a reception unit, and a control unit. Each of the plurality of graduation coils includes a transmission graduation arranged with a pitch L1, a reception graduation arranged with a pitch L0 different from the pitch L1, and a connection unit. The transmission unit includes three transmission coil groups that are constituted by pluralities of transmission coils, each being arranged with a pitch L1, and that are arranged such that adjacent transmission coil groups have a phase difference. The reception unit includes three reception coil groups that are constituted by pluralities of reception coils, each being arranged with a pitch L0, and that are arranged such that adjacent reception coil groups have a phase difference identical to the phase difference of the three transmission coil groups.

Abstract: An electronic control unit for a device for measuring a measurement variable, wherein a first inductance is supplemented by a capacitance to form a parallel resonant circuit and is excited by a micro-controller. A measuring inductance coupled to the first inductance is measured by the electronic control unit. Therefore, a measured variable can be deduced and only very few components are required in addition to the electronic control unit.

Abstract: A correction apparatus for an angle sensor includes a correction processing unit, an indicator value generation unit, and a correction information determination unit. The correction processing unit performs correction processing on a plurality of detection signals to reduce an error of a detected angle value. The details of the correction processing are determined according to correction information. The indicator value generation unit generates, on the basis of the plurality of detection signals, an indicator value having a correspondence with the error of the detected angle value. The correction information determination unit generates an estimated indicator value using a function that takes one or more values each having a correspondence with the correction information as one or more variables, and determines the correction information by adaptive signal processing so as to reduce the difference between the indicator value and the estimated indicator value.

Abstract: Various embodiments relate to devices for measuring the state of devices and multi-stage rotary encoders as well as to associated sensors. In order to simplify the design of devices which can be read out electronically and multi-turn rotary encoders, according to some embodiments a device having at least one rotatable wheel, at least one light source and at least one polarization sensor is proposed, the wheel being at least partially transparent and polarization-maintaining, parts of the wheel being configured as pole filters, it being possible for light which exits the light source to be polarized by the pole filter and to be received by the polarization sensor.

Abstract: In a position-measuring device for determining the position of a first object with respect to a second object that is displaceable relative to the first object, a measuring standard is connected to the first object and includes at least one periodic scale grating, which is arranged as a transmission grating and has a first periodicity. A scanning unit is connected to the second object and includes at least one light source, at least one periodic scanning grating, which has a second periodicity, and a detector system, which includes detector regions that are sensitive to radiation and are periodically disposed at a third periodicity in a detection plane. The bundles of rays emitted by the light source first impinge upon the scale grating and then pass through the scanning grating.

Abstract: A method of detecting tampering with a conveyance medium may include determining a baseline brightness level detected at opposing ends of an optical fiber segment disposed proximate to the conveyance medium, determining whether a change in brightness above a threshold level occurs, and providing an output indicating that a breach in continuity of a shielding material that shields both the conveyance medium and the optical fiber segment from exposure to ambient light has occurred in response to the change in brightness being above the threshold level.

Abstract: A first plate comprises a first lip, lip gaps, and first indexing formations. The first lip extends around a portion of the first plate. The lip gaps are distributed along the first lip. The first indexing formations are distributed along the first lip between lip gaps. A second plate comprises mounting points, a second lip, mounting tabs, and second indexing formations. The mounting points may receive mounting fasteners to secure the second plate to an object. The second lip extends around a portion of the second plate. The mounting tabs are distributed along the second lip and positioned to align with lip gaps. The second indexing formations are disposed on mounting tabs to engage first indexing formations in response to the second plate having mounting tabs inserted through lip gaps and rotated until at least one first indexing formation is aligned with at least one second indexing tab.

Abstract: There is provided a calibration device for calibrating a digital sensor (3), said digital sensor being configured to protest a target digital circuit (30) fed by a clock signal having a clock period by triggering an alarm depending on a condition between said clock signal and an optimal alarm threshold, said optimal alarm threshold being determined by minimizing a quantity depending on the probability of occurrence of false positives and on the probability of occurrence of false negatives.

Abstract: Signal processing apparatus includes: an input interface configured to receive an output signal Va(T) from a sensor; a prediction circuit configured to generate, on the basis of a relationship different depending on each of a plurality of converged values Vc, a plurality of predicted values Vb_T2 corresponding to a value of the output signal that would be obtained at a time T2 after a time T1, in a transition response period before a response time period Tr elapses where Tr denotes a response time period required for a value of the output signal Va(T) to become a converged value Vc corresponding to a value P of a parameter representing a certain property of an object to be measured, in accordance with a value Va_T1 of the output signal obtained at the time T1; and an estimation circuit configured to generate, on the basis of the value Va_T2 of the output signal obtained at the time T2 and the plurality of predicted values Vb_T2, an estimated value Pe of a parameter representing the certain property of the obj

Abstract: An embodiment provides a method for measuring velocity and depth of fluid flow in a channel, including: transmitting, using a transmitter, directed energy comprising a single energy beam slant-wise toward a surface of a fluid in a fluid channel producing a plurality of reflections, wherein the transmitting comprises modulating a frequency associated with the single energy beam; detecting, at a receiver, received signals from the plurality of reflections; and determining, based upon differences between parameters of the transmitted single energy beam and parameters of the received signals, the velocity of the fluid and the depth of the fluid. Other embodiments are described and claimed.

Abstract: A method and a device for determining, in real time, the flow rate of air collected from an aircraft engine by a system for collecting air from the engine, including an acquisition device for acquiring at successive times measurements of physical quantities in respect of temperature, pressure and pressure loss, specific for the air collection system, a computing device for evaluating at each current time of the successive times a first current estimation of the flow rate of air collected from the aircraft engine on the basis of the physical quantity measurements, the acquisition device for acquiring at the current time a minimum current air flow rate data item defined on the basis of a predetermined flow rate tables, the computing device for hybridising, at the current time, the first current air flow rate estimation and the minimum current air flow rate data item to form a second current air flow rate estimation.

Abstract: A flow measurement arrangement and measuring transmitter for process instrumentation that includes the flow measurement arrangement, wherein the flow measurement arrangement operating in accordance with the differential-pressure method includes a tube and an elastically deformable measuring diaphragm (orifice plate) arranged in the cross section of the tube and a strain sensor that detects the deformation and converts it into an electric signal, where the measuring diaphragm (orifice plate) and the tube are formed in one piece from uniform material, and where both side of the measuring diaphragm (orifice plate) each pass into the tube via a fillet groove and the at least one strain sensor is arranged on the circumferential side of the tube opposite the fillet groove.

Abstract: A simple device for accurately measuring real-time air flows along a wall, and relating to a measuring device including an optical sensor configured to measure an illuminance distribution on a free surface of the optical sensor. A mobile member movably is mounted on the light sensor by partially covering its free surface, the mobile member being adapted to be freely directed by a local air flow pattern, thus, modulating the illuminance distribution on the free surface so as a current illuminance distribution measurement by the optical sensor indicates the current direction of the mobile member representing the current air flow pattern.

Abstract: A velocity measurement device (17) for measuring the velocity of a moving media (3) in a channel (1), the velocity measurement device (17) including a radar unit (21) having: a radar module (33) arranged to measure the velocity of the media (3) using the Doppler effect; and a two wire interface (23) to the radar unit (21) arranged to receive power from an external power source (35), and provide data transfer between the radar unit (23) and an external control unit (19).

Abstract: A measurement apparatus (10) and to a method provide for the determination of a flow rate (v) and/or of a throughflow (Q) of a fluid (14) flowing in a conduit (12). At least one first ultrasonic transducer (18) and one second ultrasonic transducer (20) permit a flow rate determination via the time of flight of an ultrasound signal. To further improve the determination of a flow rate of a fluid using ultrasonic transducers, in particular at very high flow rates, and to enable the measurement of very high flow rates, a noise-measuring ultrasonic transducer (18, 20; 24) is provided that measures the noise generated in on the flowing past of the fluid (14) in the ultrasonic transducer, and a control and evaluation device (32) is configured to determine the flow rate (v) using the noise measurements.