939 results about "Offset distance" patented technology

A volumetric computed tomography system with a large field of view has, in a forward geometry implementation, multiple x-ray point sources emitting corresponding fan beams at a single detector array. The central ray of at least one of the fan beams is radially offset from the axis of rotation of the system by an offset distance D. Consequently, the diameter of the in-plane field of view provided by the fan beams may be larger than in a conventional CT scanner. Any number of point sources may be used. Analogous systems may be implemented with an inverse geometry so that a single source array emits multiple fan beams that converge upon corresponding detectors.

A method for reconstructing an ear canal from optical coherence tomography (OCT) scan data of an ear comprises extracting frame numbers and line numbers of interference intensities corresponding to one or more markers on an OCT scan guide, receiving reference frame numbers and lines numbers for one or more markers, determining a starting position and direction for the OCT ear scan from the ear scan marker frame and line numbers and the reference marker frame and line numbers, for each scan line, finding a pixel number of a maximum interference intensity value, and determining an offset distance of said pixel from said scan guide, and reconstructing a surface of the ear canal from the distance offset data.

In a vehicle speed control system, a preset offset distance is taken as a zero value of an inter-vehicle distance in a brake discriminant. When the current value of a corrected distance condition evaluation index is higher than the brake discriminant, a value on the brake discriminant is set as a target value of the corrected distance condition evaluation index. Deceleration control is started to decelerate the subject vehicle so that the deceleration of the subject vehicle becomes equal to the target deceleration of the subject vehicle computed based on the target relative speed corresponding to the set target value and the actual relative speed.

The invention relates to manufacturing glass fiber preforms. It relates to a method comprising rotating preform about its own axis, and displacing a plasma torch in translation relative to the preform in a direction parallel to the axis of the preform, the axes of the flame and of the preform and being offset by a certain distance, and then inserting glass powder into the plasma flame under gravity. According to the invention, the glass powder is accelerated before penetrating into the plasma flame by means of an accelerator gas, and the offset distance between the axes is reduced with increasing acceleration of the powder. The invention is applicable to manufacturing glass fibers, and in particular optical fibers.

The invention discloses a visual navigation method and system of a mobile robot. According to the method, a scene image in a scene where the mobile robot is located is acquired in real time and converted into a grayscale image; a two-dimensional code in the grayscale image is identified and decoded, and state transition information and speed change information are obtained; meanwhile, an outline center line of a stripe in the same frame of grayscale image is determined, and the offset distance and the offset angle between the outline center line of the stripe and a center line of the grayscale image are calculated; the linear velocity and the motion direction of the mobile terminal are adjusted according to the state transition information and the speed change information, and meanwhile, the angular velocity of the mobile robot is corrected in real time according to the offset distance and the offset angle. The two-dimensional code on the stripe and the scene image for correction are acquired simultaneously in the image manner, the two-dimensional code and the stripe in the same frame of image are merged, meanwhile, preset motion and real-time correction of the robot are controlled, the control and correction method can be significantly simplified, the velocity can be increased, and the system can be more stable.

An image shifting apparatus may capture multiple frames of an image, with each frame offset by a sub-pixel offset distance. After capture, the various sup-pixel offset images may be registered together and analyzed using known resolution enhancement algorithms. Super resolution algorithms, for example, may take the various frames and perform edge identification and peak extraction routines to improve the resolution of high frequency data within an image. The image shifting apparatus may include an actuation controlled optical compensator within the imaging system that may be adjusted to create a sub-pixel offset image of an original reference image. The optical compensator may be an image-stabilizing element, for example, capable of forming sub-pixel shifts in an image plane.

The invention relates to a near-surface modeling method using tomography inversion of a two-step method. The near-surface modeling method specifically comprises the following steps of: (1) picking and inputting short-refraction first-break; (2) carrying out tomography inversion on the short-refraction first-break and outputting explanation results capable of reflecting fine velocity change in an extremely shallow stratum as shown in picture 2; (3) picking a big shot and recording first-break time; (4) interpolating short-refraction inversion results in combination with explanation results of a microlog in a work area by using a kriging method and building near-surface velocity body of the extremely shadow stratum; (5) meshing and constraining inversion initial-velocity modeling, replacing a near-surface velocity body at the extremely shallow stratum obtained in the last step into the shallow stratum part of the initial model generated at the big-shot first-break, replenishing the velocity loss of the extremely shallow stratum resulting from the excessive minimum offset distance of the big shot; (6) constraining generation of a weight field; and (7) inversing the near-surface velocity model by using a constrained chromatography method, picking the top interface of a high-speed layer on the basis of a velocity-depth model obtained by tomography inversion, and calculating static correcting values of a shot point and a geophone position.

An offset measurement system, for aiding a golfer when putting upon a putting green having varying slope between a golf ball, resting upon the green, and a hole having a hole center. A target having a target line is positioned at the hole with the target line aligned with a direct putt line that connects the hole center and ball. A measurement device is used to acquire multiple measurement data sets having the slope of the putting green at a position along the direct putt line and a distance to the target at that position. The measurement device calculates and displays a recommended offset distance from the measurement data sets that is used by the golfer to redirect the putt at the hole by the recommended offset distance from the direct putt line.

The invention provides a crack detection method based on prestack coherence, which belongs to the field of oil-gas field exploration. The method comprises the following steps of: firstly, processing actual prestack seismic data to obtain a prestack seismic trace gather subjected to dynamic correction; secondly, stacking separated directions and separated offset distances through utilizing the prestack direction common midpoint seismic trace gather, and obtaining separated directions and separated offset distances stacking trace gather; and carrying out covariance matrix-based coherency cube calculation on the separated directions and separated offset distances stacking trace gather obtained through stacking to obtain a crack coherency cube, carrying out crack parameter inversion calculation on the obtained crack coherency cube, and further obtaining a final crack development direction and development strength. According to the crack detection method based on prestack coherence, a coherence algorithm is introduced in the prestack seismic trace gather for the first time, and a method for recognizing faultage in a stratum with the thickness being smaller than a seismic wavelength is provided, so that the breakage or the crack in three-dimensional seismic data can be more distinct, clear and visual.

A retaining wall with a series of differently sized, pre-formed blocks. Each block includes a projection and a recess, with the projection and recess arranged and configured so that each projection effectively engages a recess in an adjacent course to connect and align adjacent courses in registry. Retaining walls made of horizontal blocks may be stacked in columnar fashion or running bond fashion. The location of the indexing surface on a projection relative to the viewable surface of the block may be varied to enable adjacent courses to be coplanar or tiered in a variety of predetermined offset distances.

A novel head gimbal assembly (HGA) for use in a disk drive is disclosed. Each of a plurality of electrically conductive traces of a flexure of the HGA includes a connection region that is aligned with and connected to a corresponding one of a plurality of electrically conductive bonding pads of a head. Each of the plurality of electrically conductive traces further includes a heating pad that is offset from its connection region by an offset distance. A dielectric layer of the flexure includes a first opening over the heating pad, a support layer of the flexure includes a second opening over the heating pad, and a load beam of the HGA includes a third opening disposed over the heating pad. During assembly, light may be shined through the openings and onto the heating pad until solder located in the connection region that is offset from the heating pad melts.

A system and method for measuring the threaded surface of an internally threaded component is provided, where the inspection system includes at least one measuring probe, wherein the at least one measuring probe includes an emitter and a receiver and is sized and shaped to be positionable adjacent at least a portion of the threaded surface at an offset distance, wherein the emitter is configured to emit electromagnetic energy that is incident upon the threaded surface to generate reflected electromagnetic energy responsive to the threaded surface and wherein the receiver is configured to receive at least a portion of the reflected electromagnetic energy and generate threaded surface data. A processing device is also provided, wherein the processing device is in signal communication with the measuring probe to receive the threaded surface data and process the threaded surface data to determine physical characteristics of the threaded surface.

An image display system for displaying interlaced images to achieve three dimensional effects. The system includes a user electronic device, such as a computer or television, with a display with a faceplate. The electronic device operates the display to generate an image that includes an interlaced portion at an inner display surface or location at an internal offset distance from an outer surface of the faceplate. The image display system includes a lens array with lenticules configured to focus through the lens array material, through an air gap, and into the faceplate the internal offset distance rather than simply on the back of the lens array. The display system may also include a mounting mechanism for selectively positioning the lens array relative to the faceplate to adjust the size of the air gap so as to focus the lens array onto the image being displayed within the display device.

The invention relates to vehicle DAS (Driver Assistant System) and method. The system comprises a vehicle-borne terminal and a monitoring platform. The method comprises the following steps of: firstly, periodically acquiring the latitude and longitude information of a vehicle with the vehicle-borne terminal according to the configuration of the monitoring platform and sending the latitude and longitude information of the vehicle to the monitoring platform by the vehicle terminal; then, calculating to acquire the continuous driving time of the vehicle and/or the offset distance of an offset preset line of the vehicle according to the latitude and longitude information of the vehicle by the monitoring platform and/or searching to acquire a parking lot spot for a driver to rest and sending an early warning command to the vehicle-borne terminal when early warning conditions are triggered by the vehicle; and finally, reminding the driver of fatigue driving in a voice or word mode and/or informing the driver of the parking lot address by the vehicle-borne terminal after receiving the early warning command of the monitoring platform. The invention not only can remind the driver of fatigue driving, but also can actively search a parking lot for the driver to rest, therefore the invention can be applied to the field of traffic systems.

The invention provides a placing method of a self-simulating lateral-displacement horizontal well of a super-low permeability tight reservoir. The placing method comprises the following specific steps: determining a main force construction layer section; determining the positions of horizontal wells, water injection wells and artificial fractures; determining a well row direction of the horizontal wells; determining a well spacing between the horizontal wells; determining a distance between the rows of the horizontal wells; determining the length of each horizontal well; determining an offset distance of each water injection well; determining a length of each artificial fracture of each water injection well; and injecting water; scattered water injection in the past is changed into linear water injection, and in case of the same water injection amount, a water injection pressure is reduced so that secondary opening of a natural fracture generated in the water injection process can be avoided and a risk of fractured water flooding can be reduced; elastic solution gas drive in a region between the artificial fractures is converted to water drive and a fracture dominant direction of a local region is kept consistent so that early-phase water breakthrough can be avoided and an energy supplementing level can be increased. Row water injection displacement is formed through appropriate fracturing of the directional water injection wells, leading to the advantages that layered water injection can be realized and maximum draw-on in a longitudinal direction can be realized, compared with taking the horizontal wells as the water injection wells.

The present invention concerns a wind turbine having a plurality of vertically extending airfoils forming a rotating carousel rotating about a central axis thereof. The airfoils pivot about their leading edges to adjust the pitch angle thereof to maximize energy harvest when the airfoils are rotating both in an upwind direction and in a down wind direction. This pivoting movement results from trailing edges of the airfoils being pivotally secured to rigid spokes or cables of a trailing edge hub. An adjustment mechanism is pivotally mounted between a carousel hub and the trailing edge hub and is used to control the separation between a central axis of the trailing edge hub and the axis of rotation of the carousel as they co-rotate. As the carousel rotates, the offset distance between the two axes determines the maximum achievable pitch angle of each airfoil. The airfoils then continually cycle between a positive and negative value of the maximum pitch angle so that each airfoil is at its most desirable pitch angle relative to its position around the carousel and relative to the existing wind direction in order to create maximum lift. A wind direction rudder is secured to the adjustment mechanism to provide for movement thereof resulting in movement of the trailing edge hub as wind direction changes so that the most desirable pitch angle of the airfoils relative to wind direction is maintained.