Abstract: A contactless dual-plane positioning method is disclosed. In this method, an X ray is provided. The X ray passes through a first test piece along a light incident axis. A scattering pattern generated by the X ray passing through the first test piece, and a scatting light intensity corresponding to the scattering pattern are obtained. According to the scattering light intensity, the first test piece is pivoted along a first axis or a second axis until the scattering intensity is greater than or equal to a predetermined intensity. At least three measurement distances between a second test piece and the first test piece are then obtained. According to the measurement distances, an included angle between the second test piece and the light incident axis is adjusted by pivoting the second test piece along a third axis or a fourth axis until the differences between any two measurement distances are less than a predetermined threshold value.

Abstract: A method for compensating for accuracy errors of a hexapod is disclosed, said hexapod comprising a base, an actuation assembly having six linear translation actuators, a control unit, and a movable carriage comprising a platform connected to the base by means of the actuation assembly. The method includes a measurement step for determining geometry and positioning errors on the hexapod, the measurement step including sub-steps for determining positioning errors of the pivot centers on the carriage and on the base, for determining length errors of the actuators and for measuring positioning errors of the actuators along the path thereof, the compensation method also including a step for calculating, from measurements taken, error compensation values and a step for applying said error compensation values to the control unit of the hexapod, during subsequent use of said hexapod.

Abstract: Implementations disclosed herein may include a system and method for engaging in a technique for calibrating and/or boosting the accuracy of an arrangement of sensors positioned about a physical space. In one implementation, a method includes receiving from a primary sensor an indication of a particular location of a subject and receiving a first feature from a plurality of secondary sensors. The first feature may comprise a set of estimated locations of the subject. The method may further include resolving the first feature as being indicative of the particular location, receiving a second feature from the plurality of secondary sensors, identifying a match between the second feature and the first feature, and based on the identifying, determining a location of the new subject to be the particular location.

Abstract: Systems and methods are disclosed herein for multi-axis single-drive inertial devices. A multi-axis single drive inertial device can include a rotational drive configured to oscillate a plurality of accelerometer proof masses and a plurality of gyroscope proof masses about a z axis and signal processing circuitry configured for determining inertial parameters based on motion of the plurality of accelerometer proof masses and the plurality of gyroscope proof masses. The inertial parameters can include acceleration of the inertial device along an x axis perpendicular to the z axis and along a y axis perpendicular to each of the x and z axes, and rotation of the inertial device about each of the x, y, and z axes.

Abstract: A MEMS (Micro-Electro-Mechanical System) device includes: a substrate, including an anchor; a proof mass, including a centroid, wherein there is a distance between the centroid and the anchor; at least two spring assemblies, connected between two opposite sides of the anchor and the proof mass, to assist a motion of the proof mass; and plural sensing capacitances, located between the substrate and the proof mass to operably sense the motion of the mass; wherein each of the spring assemblies includes a parallel-swing spring and a compression spring which are serially connected to each other.

Abstract: A method, a system, and a computer-readable medium for tracking position and orientation of a pedestrian. The system tracks a head position or head orientation of the pedestrian, and a foot position or foot orientation of the pedestrian. The system determines a first heading or position uncertainty associated with the head position or the head orientation of the pedestrian, and determines a second heading or position uncertainty associated with the foot position or the foot orientation of the pedestrian. Moreover, the system determines which of the first heading or position uncertainty or the second heading or position uncertainty is smaller. The system transfers the first heading or position uncertainty to a device or system portion for foot position, or transfers the second heading or position uncertainty to a device or system portion for head position.

Abstract: Examples are disclosed that relate to providing information regarding nearby locations that may be familiar to a user to help inform the user of a current location within an area. One disclosed example provides a computing device comprising a display, a logic subsystem, and a storage subsystem comprising instructions executable by the logic subsystem to form a list of familiar locations for a user based upon a user history regarding the familiar locations, determine that the user is within a threshold proximity to a nearby familiar location on the list of familiar locations, and in response, output directional information indicating a relative position of the nearby familiar location on the list of familiar locations.

Abstract: The present disclosure discloses a method and apparatus for positioning a vehicle. In some embodiments, the method comprises: acquiring an a priori position of a to-be-positioned vehicle at a current positioning moment determined by performing a strapdown calculation between a previous positioning moment and the current positioning moment; determining a map area for searching in a laser point cloud reflected value map; matching a reflected value characteristic of a projection area generated by projecting a real-time laser point cloud, to obtain a map matching position according to a matching result; positioning, using the a priori position in combination with observation data of a vehicle-mounted global navigation satellite system (GNSS) receiver of the vehicle, to obtain a satellite positioning position; and fusing the a priori position, the map matching position and the satellite positioning position to generate a positioning result of positioning the vehicle at the current moment.

Abstract: Presented herein are techniques for updating detailed maps used to navigate an autonomous vehicle. The techniques include determining that a vehicle has come within a predetermined range of a road side unit, establishing a communication link with the vehicle, receiving, from the vehicle, data sufficient to identify a vehicle type of the vehicle, based on the vehicle type, selecting a map, stored by the road side unit, for the vehicle, sending a query to a neighbor road side unit seeking data to augment the map, in response to the query, receiving the data to augment the map from the neighbor road side unit, updating the map based on the data to augment the map to obtain an updated map, and sending at least a aspects of the updated map to the vehicle.

Abstract: A system and method for mapping parameter data acquired by a robot mapping system is disclosed. Parameter data characterizing the environment is collected while the robot localizes itself within the environment using landmarks. Parameter data is recorded in a plurality of local grids, i.e., sub-maps associated with the robot position and orientation when the data was collected. The robot is configured to generate new grids or reuse existing grids depending on the robot's current pose, the pose associated with other grids, and the uncertainty of these relative pose estimates. The pose estimates associated with the grids are updated over time as the robot refines its estimates of the locations of landmarks from which determines its pose in the environment. Occupancy maps or other global parameter maps may be generated by rendering local grids into a comprehensive map indicating the parameter data in a global reference frame extending the dimensions of the environment.

Abstract: Systems and methods for route planning. The method includes acquiring, using processing circuitry, travel information. The travel information includes a user destination. Further, the method includes determining, using the processing circuitry, an emotional state of a user based on at least one of a plurality of factors, determining a route plan based on the user destination and the emotional state of the user; and control an aspect of the vehicle based on the route plan.

Abstract: A travel coordination system determines a route for a rider using a public transit system and a provider. The travel coordination system may determine a route that describes a public transit stop at which the rider exits the public transit system, and the travel coordination system can route a provider so that the provider transports the rider when the rider arrives at the public transit stop. The travel coordination system may update the rider's route after transmitting the route to the rider. The travel coordination system may determine a public transit vehicle on which the rider is traveling or predict the rider's destination. If multiple riders are traveling on the public transit vehicle and if those riders exit the public transit station using the same public transit stop, the travel coordination system may match those riders together for transport by a provider.

Abstract: A method for manually or semi-manually mapping an urban environment to locate a safe, traversable path within the environment is provided herein. An area is mapped by an entity that traverses sidewalks, ramps, driveways, crosswalks, and other terrain in the area to create a memory of usable paths to reach addressed destinations. A human operator, possibly assisted by a computer-executed mathematical algorithm, approves routes that are considered safe. When a route is approved, it enters the memory as a safe, traversable route. If a route is not approved, it is marked as unsafe and the entity finds an alternate route to get to the same location such as by going around the block or in another direction.

Abstract: A method, system and computer program product for routing a vehicle are disclosed. In an embodiment, the method comprises aggregating specified data about a first vehicle, using the aggregated data to determine a predicted route for the first vehicle, receiving data about a emergency vehicle, using the received data about the emergency vehicle to identity a route for the emergency vehicle, and determining whether there are one or more intersecting areas and times between the predicted route for the first vehicle and the identified route for the emergency vehicle. When there is an intersecting area and time between the predicted route for the first vehicle and the identified route for the emergency vehicle, an alternate route is determined for the first vehicle, an alert is sent to a driver of the first vehicle, and instructions are transmitted to that driver for avoiding the intersecting area and time.

Abstract: Disclosed are systems and methods for navigating a mobile device based on network connectivity. An aspect includes calculating one or more routes from an origin location to a destination location based on first network connectivity information for a first subscription of a plurality of subscriptions of the mobile device and second network connectivity information for a second subscription of the plurality of subscriptions, providing the one or more routes and an indication of available network connectivity along each portion of the one or more routes based on the first and second network connectivity information, receiving a selection of one of the one or more routes, and setting, based on the first network connectivity information, the first subscription as an active subscription for the mobile device for a first portion of the selected route.

Abstract: A navigation ECU includes a route calculator section, an automated driving distance calculator section, and a display processor section. The route calculator section calculates a plurality of route candidates to a destination designated by a user. The automated driving distance calculator section calculates an automated driving enabled distance that is a distance of a road segment, where a vehicle is able to be run by an automated driving, with respect to each of the plurality of route candidates. The display processor section displays a route selection screen view containing the information which indicates an automated driving enabled distance versus a full length, with respect to each of the plurality of route candidates.

Abstract: A system and method for providing a mobile device application that may enable efficient navigation to urgent care facilities, wherein the navigation may be online or offline, wherein selection of the urgent care facility may depend on criteria that may include distance from current location, acceptance of the user's insurance and wait time at the urgent care facility.

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: Provided is a system for alerting users to help them avoid or prevent traffic accidents by mapping and storing traffic accident relevant data so as to alert a user in order to avoid potential accidents based on location and user type. User type may be a vehicle user, motorcyclist, bicyclist or pedestrian. Traffic accident relevant data comprises at least one of vehicle type data, motorcyclist type data, bicyclist type data, or pedestrian type data. Data corresponding to at least one relevant user type is retrieved and conveyed through notifications or customizable notifications based on user preference. Accuracy and validity of notifications is maintained by integrating user engagement panels for collection of information. The collected information is further subject to user ratings, where the database is updated or otherwise modified with the collected data that has been validated, and a reward may issue to users contributing valid traffic accident-related data.

Abstract: A server device according to one embodiment performs communication with a plurality of vehicles having an automatic driving function through a network. The server device comprises a processing unit configured to assign a road area along a traveling route of the vehicle for each predetermined period and for each of the vehicles included in the plurality of vehicles. The road area is an area to be occupied by the vehicle on a road within the predetermined period. The processing unit notifies each of the vehicles of the road area so that each vehicle travels by automatic driving according to the road area assigned to the vehicle.

Abstract: A vehicle display control device controls a virtual image display performed by a head-up display which superimposes a display image on outside scenery of the host vehicle. The host vehicle is equipped with an automatic control unit which executes an automatic control to the host vehicle. The vehicle display control device includes: a route information acquisition unit that acquires route information related to a scheduled route of the host vehicle, the automatic control unit setting the scheduled route for the host vehicle; and a route image formation unit that forms a route image indicative of the scheduled route based on the route information acquired by the route information acquisition unit. The head-up display projects the route image as the display image in a virtual image display region that is superimposed on a forward traveling road included in the outside scenery.

Abstract: A method includes receiving one or more search terms at a mobile computing device while the mobile computing device is located at a particular location. A search query that includes the one or more search terms and a location history of the mobile computing device is transmitted to a server. The method also includes receiving one or more search results in response to the search query, where the one or more search results include content identified based on a predicted destination of the mobile computing device. An interface identifying the one or more search results is displayed at the mobile computing device.

Abstract: An interface device connects to a mobile application running on a mobile device to provide vehicle navigation assistance. The interface device includes a microphone, a location determining component, a display, a plurality of indicator lights, a short-range communications transceiver, and a controller. The controller is configured to: receive a spoken instruction or query from a user via the microphone; send data associated with the spoken instruction or query to the mobile application running on the mobile device via the short-range communications transceiver; receive navigation data based on the spoken instruction or query from the mobile application running on the mobile device via the short-range communications transceiver; determine a current position based on one or more signals received via the location determining component; and provide at least one of a symbolic output or a textual output via the display based on the navigation data and the current position.

Abstract: An interface device connects to a mobile application running on a mobile device to provide vehicle navigation assistance. The interface device includes a microphone, a location determining component, a display, a plurality of indicator lights, a short-range communications transceiver, and a controller. The controller is configured to: receive a spoken instruction or query from a user via the microphone; send data associated with the spoken instruction or query to the mobile application running on the mobile device via the short-range communications transceiver; receive navigation data based on the spoken instruction or query from the mobile application running on the mobile device via the short-range communications transceiver; determine a current position based on one or more signals received via the location determining component; and provide at least one of a symbolic output or a textual output via the display based on the navigation data and the current position.

Abstract: A lane-level vehicle routing and navigation apparatus includes a simulation module that performs microsimulation of individual vehicles in a traffic stream, and a lane-level optimizer that evaluates conditions along the candidate paths from an origin to a destination as determined by the simulation module, and determines recommended lane-level maneuvers along the candidate paths. A link-level optimizer may determines the candidate paths based on link travel times determined by the simulation module. The simulation may be based on real-time traffic condition data. Recommended candidate paths may be provided to delivery or service or emergency response vehicles, or used for evacuation planning, or to route vehicles such as garbage or postal trucks, or snowplows.

Abstract: A map application is provided that receives calendars from one or more sources. Each calendar may include events, and each event may be associated with a location and a time period. The events may be a temporary event that may impact traffic around the location of the event for the time period associated with the event. When a request for a route for a future trip is received by the map application, the map application may generate a route in response to the request. The map application may determine if any of the events associated with a calendar impact the route. An event may impact the route if the route passes near the location associated with the event during the time period associated with the event. If the route is impacted by an event, an alternative route is generated or a new time is recommended for the future trip.

Abstract: Embodiments are disclosed to monitor and present a user's physical activity as part of an analog wellness device. The device may include two motors that are coupled to respective discs such that, when rotated, various regions are visible through respective windows. The first of these motors may rotate a first disc based upon a measured number of steps taken by the user, which may be part of a daily fitness activity goal. As the first motor rotates the first disc, the region visible through the first window may indicate a proportion of the fitness activity goal that has been met or exceeded. The second of these motors may turn a second disc based upon a period of time associated with the user's inactivity. The regions visible through the second window may indicate the period of time that the user has been inactive. The top surface of each respective disc may include one or more symbols to communicate information to a user.

Abstract: An air data computer senses acceleration and rotational rate of an aircraft with an inertial sensor assembly of the air data computer. The air data computer determines first attitude information of the aircraft based on the acceleration and rotational rate sensed with the inertial sensor assembly. The air data computer receives second attitude information of the aircraft from a source external to the air data computer, and determines attitude correction values based on the first attitude information and the second attitude information. The air data computer applies the attitude correction values to the first attitude information to produce error-corrected attitude information that is output from the air data computer.

Abstract: Encoder for bearing units are disclosed, as well as methods of making the encoders. In one example, an encoder includes a magnet part including a material which comprises polyketone and at least one magnetic filler. In an example method, an insert part is introduced into a mold, wherein the insert part is a support part, a metal foil or a metal-coated foil. The mold is closed and a melt is injected into the closed mold, wherein the melt includes a material which comprises polyketone and at least one magnetic filler. The melt may then be cooled, wherein the insert part joins with the melt to form the encoder.

Abstract: A rotary encoder and rotary encoder system that provides rotation detection and generates tactile feedback using a single magnetic mechanism and without relying on mechanical detects. The rotary encoder utilizes a ring magnet attached to a knob, two Hall Effect sensors that detect movement information for the processor, and magnets that are mounted to the surface of the platform. As the knob and multipole ring magnet get rotated, the ring magnet is subjected to opposing forces due to the magnets mounted to the platform surface, causing an unstable position that is experienced as tactile feedback by the user rotating the knob. Releasing the knob snaps the magnetic ring into one of many fixed positions, thus providing further tactile feedback.

Abstract: A magnet has a circular cylinder or circular tube shape and contains magnetic crystal grains, wherein an orientation of magnetization of the magnet is in a direction perpendicular to an axis of the circular cylinder or the circular tube, and directions of axes of easy magnetization of the magnetic crystal grains are isotropic.

Abstract: A system for detecting a position of a dual solenoid device includes device configured to move between first and second positions, and a controller. The controller has first and second monitoring circuits in operable communication with first and second channels, respectively. The first and second channels are in operable communication with first and second solenoids, respectively. Each solenoid is configured to selectively operate as an active solenoid to move the device when the solenoid and its respective channel are in an active mode, and as a passive solenoid when the solenoid and its respective channel are in a passive mode to passively move with the active solenoid. Each of the monitoring circuits is configured to determine a position of the device when the channel the monitoring circuit is associated with is operating in the passive mode by monitoring an electrical parameter of the passive solenoid associated with that channel.

Abstract: A brushless resolver includes a rotor having a one-phase excitation coil and a stator having two-phase detection coils. The rotor is mounted to a shaft of a motor to detect a rotation angle of the motor. An induction coil is located around the shaft. The induction coil is connected to the excitation coil. Electromotive force induced in the induction coil by a change of magnetic flux of the motor, which passes through the shaft, is used as an excitation signal supplied to the excitation coil.

Abstract: A photon momentum sensor includes: a reflector plate that includes: a central disk including a mirror; an annular member; a plurality of spring legs interposed between the central disk and the annular member, such that: the spring legs are interleaved; neighboring spring legs are spaced apart; and the spring legs individually are arranged in an Archimedean spiral that provides orthogonal motion of the central disk relative to the plane of the annular member; and a bias plate disposed opposing the reflector plate such that: the central disk of the reflector plate moves orthogonally to a plane of the bias plate in response to reflection of laser light, and the central disk and the bias plate are arranged spaced apart as a capacitive structure.

Abstract: A detection head movable relative to a scale detects diffracted light and outputs a detection result. The diffracted light is diffracted by an incremental pattern. A signal processing unit calculates a relative displacement between the scale and the detection head. The detection head includes: a light source emitting the light to the scale; and a detection unit including a light-receiving unit receiving the diffracted light through an optical element, in which the light-receiving elements outputting detection signals are periodically arranged with a predetermined period. The number of the plurality of light-receiving elements is an even number. The predetermined period is a value obtained by multiplying a fundamental period by an odd-number. The fundamental period is a period of interference fringes formed on the light-receiving unit by +1st and ?1st order diffracted lights. A width of the light-receiving element is not equal to an integral multiple of the fundamental period.

Abstract: A monitoring system includes optical sensors disposed on one or more fiber optic waveguides. Each optical sensor is spaced apart from other optical sensors and is disposed at a location along a route defined by a transportation structure that supports a moveable conveyance. The plurality of optical sensors are mechanically coupled to one or both of the transportation structure and the moveable conveyance. Each optical sensor provides an optical output signal responsive to vibrational emissions of one or both of the transportation structure and the conveyance. The monitoring system includes a detector unit configured to convert optical output signals from the optical sensors to electrical signals. A data acquisition controller synchronizes recordation of the electrical signals with movement of the conveyance.

Abstract: Systems, apparatuses and methods may provide for detecting one or more trigger condition on a mobile platform and activating an offline calibration of one or more sensors on the mobile platform in response to the one or more trigger conditions. Additionally, an operational profile of the one or more sensors may be updated based on the offline condition. In one example, the trigger conditions include one or more of a time condition, a temperature condition, a motion condition or a system event condition.

Abstract: A method for manufacturing a system in a wafer for measuring an absolute and a relative pressure includes etching a shallow and a deep cavity in the wafer. A top wafer is applied and the top wafer is thinned for forming a first respectively second membrane over the shallow respectively deep cavity, and for forming in the top wafer first respectively second bondpads at the first respectively second membrane resulting in a first respectively second sensor. Back grinding the wafer results in an opened deep cavity and a still closed shallow cavity. The first bondpads of the first sensor measure an absolute pressure and the second bondpads of the second sensor measure a relative pressure. The etching in the first step defines the edges of the first membrane and of the second membrane in respectively the sensors formed from the shallow and the deep cavity.

Abstract: A turbulator adapted to be mounted to or inserted in an inlet portion of a flow meter for a ventilator is disclosed. The turbulator is adapted to create a turbulent gas flow in the inlet portion downstream of the turbulator upon passage of a gas flow therethrough. A flow meter for a ventilator is provided. The flow meter may comprise such turbulator. The turbulator may be arranged in the inlet portion of the flow meter. A membrane for a ventilator flow meter is provided, as well as a flow meter comprising the membrane. A flow meter comprising a turbulator and a membrane is disclosed.

Abstract: The invention relates to a measurement apparatus for measuring a flow rate of a fluid that flows with a main direction of flow in a circular line comprising an inlet section for conducting the fluid from the circular line into the measurement apparatus; an outlet section for conducting the fluid from the measurement apparatus into the circular line; a measurement section for connecting the inlet section to the outlet section; at least one ultrasound device for transmitting and/or receiving ultrasound waves, wherein the ultrasound device is arranged at a wall of the measurement section; and an evaluation unit for carrying out a time of flight difference measurement and for determining the flow rate, wherein the inlet section has a first superelliptic transitional shape and the outlet section has a second superelliptic transitional shape and the measurement section has a rectangular form, in particular having rounded corners.

Abstract: An apparatus for ultrasonically measuring the flow rate of a fluid in a measuring channel including fluid supply passages at its ends, this measuring channel forming a waveguide made into a solid body, comprising at each end a transducer capable of emitting or receiving ultrasounds circulating in the axis of the channel, where each transducer includes a shell transmitting the ultrasounds, comprising a waveguide facing the measuring channel, and outside this waveguide shapes orientating the ultrasounds in directions different from that of the channel.

Abstract: The application discloses a thermal, flow measuring device comprising: a sensor including a metal sensor housing having a hollow body and a base; and at least first and second pin sleeves protruding from the base. In a first of the two pin sleeves a first heater is provided and in a second of the two pin sleeves a temperature sensor is provided for ascertaining a temperature of a medium. At least two elongated elements extend with at least the same length as the pin sleeves starting from the hollow body in parallel with the two pin sleeves. On a cutting plane perpendicular to the sensor axis another axis extends that is perpendicular to the connecting axis and wherein the separation of the elongated elements in their course parallel with the axis lessens in certain regions.

Abstract: The present invention disclosed a micromachined composite silicon flow sensor that is comprised of calorimetric flow sensing elements, time-of-flight sensing elements as well as independent temperature sensing element on a silicon-on-insulator device where the device layer is used for the thermal isolation membrane. The disclosed composite silicon flow sensor can measure mass flowrate, volumetric flowrate and flow medium temperature simultaneously, from which a full spectrum of flow parameters including flow pressure can be obtained. The sensor can be further used to alert any changes in physical properties of flow medium during operation. The disclosed manufacture process details the micromachining process of making such a sensor.

Abstract: In using a fast Fourier transform for correction of a pulsation error in a conventional air flow rate measuring device, the correction is delayed due to the observation time and computation time required for the fast Fourier transform, leading to difficulty in following changes in the pulsation state at high speed. The air flow rate measuring device according to the present invention comprises an air flow rate detector that generates an output signal in accordance with an air flow rate being measured, an amplitude detector that detects a pulsation amplitude from the output signal, a low-pass filter in which the cut-off frequency changes in accordance with the value of the pulsation amplitude, and a waveform arithmetic unit that computes the waveforms of the output signal from the low-pass filter and the output signal. The waveform arithmetic unit is constituted from multipliers, an adder, and a condition determination process.

Abstract: A dosing device is described, for dispensing doses of liquid from a container. It has an outlet passage with a front outlet tube (44) and a control chamber (2,29) positioned behind the front outlet tube. A flow path for dosed flow of liquid squeezed from the container leads in around the front of the control chamber (2,29) to the outlet tube (44), via flow openings (23). The control chamber (2) has control openings (28) to admit a restricted flow and time the fall of a blocking piston (3) to a blocking position where it blocks the outlet passage to terminate a dose. To improve uniformity of dosing, the outlet tube (44) has a tortuous flow-restricting formation (449) formed by a set of inward radial finger projections (49).

Abstract: An apparatus for measuring an internal volume of a mold designed for forming hollow glass containers and divisible into two or more pieces includes: a supporting element configured to support the mold pieces of the mold positioned with respective molding surfaces, delimiting the internal volume of the mold, accessible by an optical inspection device, which is configured to scan the profiles of a surface and obtain information on the distance between the surface and the optical inspection device, the scanning device being movable, relative to the supporting element, by rotation about a longitudinal axis of rotation; a control unit connected to an actuator to produce relative rotation between the optical inspection device and the supporting element.

Abstract: A method of fuel gauging includes the use of limited physical probes and a number of virtual probes that are mathematically represented despite having no physical representation. Each probe determines the volume of fuel in a particular section of the fuel tank. The calculation method includes using the attitude of the fuel tank to calculate the rotation of each physical probe, using this information to determine the height of the fuel at each physical probe, and extrapolating the physical height information to determine the position of each virtual probe. Once the information on each physical and virtual probe is obtained, a total fuel volume can be calculated.

Abstract: The indication of a fuel level in a vehicle is disclosed herein. The vehicle can monitor the ignition switch to determine whether the vehicle is on or off. Also, the vehicle can determine a fuel level when state of the vehicle changes (e.g., switches from on to off, and vice versa). When the fuel level at the on state (e.g., ignition-on fuel level) is different from the fuel level at the off state, the vehicle can determine whether the vehicle is located at a fueling station. If the vehicle is located at the fueling station, the vehicle can generate an indication of the ignition-on fuel level within a user interface.

Abstract: An integrated sensor unit for estimating a quantity of fluid in a container includes a pressure sensor configured to measure a pressure at a physical location of the sensor unit, an acceleration sensor configured to measure at least three components of an acceleration vector at the physical location of the sensor unit, and a temperature sensor configured to measure a temperature at the physical location of the sensor unit. The sensor unit is configured to produce an output signal comprising the pressure, acceleration, and temperature measurements.

Abstract: A liquid measurement system for determining a quantity of a liquid within a tank includes a pressurized air supply, a valve connected to the pressurized air supply with the valve able to introduce a known mass of air into the tank, a pressure sensor able to measure the change in air pressure within the tank, and a processor operatively connected to the valve and the pressure sensor. The processor is able to determine the volume of the liquid within the tank from the known mass of air introduced into the tank and the change in air pressure within the tank.