14 results about "Measurement plane" patented technology

The application provides a kind of terahertz wave power distribution measurement method based on circular sensor, belong to engineering and physical experiment measurement technical field, this method includes: obtaining the quantitative relationship of the output total power of circular sensor and the power density of measurement plane;Establish the resolution of the measured power distribution image of measurement plane, the constraint condition of measurement back-propagation error and the translation step of sensor;According to the translation step control of sensor, the translation measurement of circular sensor in measurement plane is carried out, to obtain the measurement power data set;According to the resolution, the measurement plane is discretized and the objective function is constructed, and the discrete power density of the measurement plane is obtained by solving the objective function;The measured power distribution image of measurement plane is reconstructed, and the measured power distribution image of measurement plane is output.The application has the advantages of high precision, adjustable resolution and controllable error, and is suitable for high-precision measurement scenarios of various engineering and physical experiments.

The application relates to the technical field of high-frequency field measurement and reconstruction, and discloses an electromagnetic exposure evaluation method and device for an ultra-near field and electronic equipment, wherein the electromagnetic exposure evaluation method comprises the following steps: collecting vector electric field data of a device under test in a measurement plane to obtain a sparse electric field matrix; performing super-resolution reconstruction on the sparse electric field matrix based on a propagation and gradient guided super-resolution generative adversarial network to obtain a reconstructed electric field with a target resolution; performing ultra-near field reverse deduction on the reconstructed electric field to obtain an initial estimated value of an ultra-near field electric field; performing end-to-end refinement on the initial estimated value based on a U-shaped convolutional neural network with a residual connection to obtain a target vector electric field of the ultra-near field; and performing electromagnetic exposure compliance evaluation on the target vector electric field to obtain an electromagnetic exposure compliance evaluation report. The application can realize higher-precision ultra-near field measurement and reconstruction, and obtain more accurate electromagnetic exposure compliance evaluation results.

The invention relates to an electronic device, in particular an electronic device having an integrated structure for assessing a thermal path within the electronic device during the intended use thereof. The electronic device comprises an electronic component, optionally an element adjoining the electronic component, in particular a support substrate or a submount, and a first conductor track and a second conductor track, each of which has a first end and an opposite second end. The first and the second conductor track each extend from a measurement plane in the direction of a reference plane, and the second ends of the first and the second conductor track are conductively connected to one another on the reference plane. The measurement plane or the reference plane is situated on the upper face of the electronic component, and the measurement plane is situated at a distance from the reference plane. The first ends of the first and the second conductor track are electrically insulated from one another on the measurement plane and are designed to be able to detect, on the conductor tracks, a voltage dropping across the first and second conductor tracks. The first conductor track consists of a first electrically conductive material, and the second conductor track consists of a second electrically conductive material which differs from the first.

The application provides a flux inversion method using last cycle inversion information weighted radial plume mapping, relates to the field of oil and gas station equipment and safety and environmental protection technology, and comprises the following steps: correcting the measured path integral concentration data of the current cycle by using the reconstructed path integral concentration data of the last cycle to obtain the corrected path integral concentration data of the current cycle; based on the corrected path integral concentration data of the current cycle and the reconstructed path integral concentration data of the last cycle, using a weight function to update a weight coefficient to minimize the error sum of squares, combining a two-stage Gaussian smoothing base function minimization method to obtain the measurement plane concentration distribution of the current cycle; under the condition of simultaneously satisfying consistency, wind speed and wind direction, the flux is calculated by using the measurement plane concentration distribution and environmental wind data. The application is particularly suitable for the flux scene with obvious periodic change by weighting and correcting the measurement value of the current cycle by using the historical cycle data.

Position determination method for determining rotational and translational movements of a control element (BD) using a position determination system (PS), wherein - the positioning system (PS) has a rotational axis (D), - the control element (BD) is rotatable around the axis of rotation (D) only in a basic position (GP) aligned concentrically to the axis of rotation (D), - the control element (BD) is movable in a first plane at a fixed rotation angle perpendicular to the axis of rotation (D), - the position determination system (PS) includes a transmitter and a magnetic field sensor (S1) and an evaluation unit, - the transmitter is attached to the control element (BD), - in a first alternative, the transmitter includes a permanent magnet (PM), - by means of the transmitter a first magnetic field component and a second magnetic field component perpendicular to the first magnetic field component is generated, wherein the first magnetic field component and the second magnetic field component lie in a measuring plane of the magnetic field sensor (S1), - the first magnetic field component and the second magnetic field component are determined using the magnetic field sensor (S1), - a signal vector is determined from the first magnetic field component and the second magnetic field component by means of the evaluation unit, characterized in that - in a second alternative the transmitter is ferromagnetic and the magnetic field sensor (S1) includes a backbiased permanent magnet (PM), - the evaluation unit determines the length of the signal vector and compares it with a reference value to determine a deviation or a match, - if the first magnetic field component and the second magnetic field component match, a rotation angle of the control element (BD) about the axis of rotation (D) is determined, and - in case of deviation, a two-dimensional position of the control element (BD) in the first plane is determined based on the signal vector.

The application discloses a workpiece, and relates to the technical field of optics. In the application, the workpiece is a mask or a wafer, the workpiece has a functional area and an alignment area on a measurement plane, the alignment area is arranged around the functional area, the workpiece has a rotationally symmetric center, the alignment area has a plurality of alignment marks, one of any two alignment marks can be rotated around the rotationally symmetric center to a position coinciding with the other, and the alignment mark comprises two symmetrical sub-patterns and an asymmetrical sub-pattern arranged on the measurement plane. Each symmetrical sub-pattern has a first symmetry axis and a second symmetry axis perpendicular to each other. The asymmetrical sub-pattern is configured as a pattern asymmetric about the first symmetry axis and the second symmetry axis. The workpiece in the application has the alignment mark, so that a photolithography device can simultaneously realize direction identification and high-precision measurement, and the reliability of an alignment process is remarkably improved.

The articulation angle is an important characteristic to quantify for open loop control and / or closed loop control of a medical instrument comprising an elongated body. The articulation angle may be computed using various techniques including using inverse trigonometric functions on vector representations of elongated body poses. The technique may involve projecting the vectors onto a measurement plane having a normal vector. The technique enable differentiation between positive and negative articulation directions. Additionally, the technique can enable the articulation angle to be computed even for high articulation angles, e.g., more than 180 degrees. The so computed articulation may be used for open loop or closed loop control of the elongated body.

This invention discloses a method for measuring the outer contour dimensions of sheet metal based on contour chain corner point allocation and adjacent edge correction. The method acquires a scanned point cloud of the sheet metal to be measured and maps features such as template outer contour corner points, straight edges, and arc edges to the scanned point cloud coordinate system as a reference for outer contour feature localization. Subsequently, the scanned point cloud is projected onto a two-dimensional measurement plane, and the outer contour boundary is obtained using the Alpha Shape boundary extraction method. An ordered outer contour chain is then formed through resampling. Based on this, candidate corner points are scored for contour chain points in the neighborhood of template corner points, and global allocation is performed based on the contour order, relative distance, and directional relationship between template corner points to determine the primary positioning corner points. For corner points with excessive errors or weak features, the corner point position is further corrected based on the straight line or arc fitting results of the adjacent edges on both sides. Finally, the outer contour dimension parameters such as straight edge length, arc radius, and arc center are calculated. This method can improve the stability of outer contour corner point localization and dimension measurement of sheet metal and is suitable for automated detection of sheet metal outer contours.

An optical lens intended to be worn in front of an eye of a wearer, the optical lens comprising: - a refraction area having at least a first refractive power (PPO) based on a prescription adapted for the eye of the wearer; - at least one filtering zone, said at least one filtering zone comprising at least a filtering function reducing the transmission of light passing through it over a range of wavelength comprised in the visible wavelength range so that the transmission value Tlum is smaller than or equal to 50%, characterized in that a projection of the at least one filtering zone over a measuring plane is not convex and that a part of the optical lens corresponding to the complementary zone of the projected filtering zone has a transmission value Tlum greater than or equal to 90%

This invention relates to the field of image detection, specifically to a method and system for detecting and measuring the width of cracks in bridge structures. The method includes the following steps: based on a set of attitude perturbation parameters and a set of crack edge points extracted from a crack image sequence, a measurement plane for each frame of the image is constructed in a stable reference frame through multi-plane fitting, generating a primary reference plane sequence. The reference plane is used to simultaneously calibrate and correlate crack edge points across frames, obtaining a set of crack edge trajectories. A crack skeleton point set is constructed by combining crack skeleton data. A primary normal measurement path sequence is reconstructed based on this set. Spatial coordinate fitting is performed on the measurement path segments to construct a secondary reference plane sequence and update the normal path, obtaining a secondary normal measurement path sequence. Normal sampling is performed along the updated normal path. The crack width is calculated by combining attitude perturbation parameters and the trajectory set, and the width measurement result is output. This invention improves the accuracy and stability of crack measurement in dynamic detection scenarios.

The invention relates to an electronic device, in particular with an integrated structure for evaluating a thermal path within the electronic device during its intended use. The electronic device comprises an electronic component, optionally an element adjacent to the electronic component, in particular a substrate or submount, and a first conductor and a second conductor, each with a first end and an opposite second end. The first and second conductors each extend from a measurement plane towards a reference plane. The second ends of the first and second conductors are conductively connected to each other in the reference plane. The measurement plane or the reference plane is arranged on a top surface of the electronic component. The measurement plane is spaced apart from the reference plane.The first ends of the first and second conductor tracks are electrically insulated from each other in the measuring plane and are designed to detect a voltage drop across these tracks. The first conductor track is made of a primary electrically conductive material, while the second conductor track is made of a secondary electrically conductive material that differs from the primary one.

This invention discloses a phase-free planar near-field measurement method based on the conjugate gradient method. The steps include: performing planar near-field measurements on a two-dimensional narrow-beam antenna; acquiring the amplitude information of the near-field electric field on two planes; iteratively recovering the near-field phase of the two-dimensional narrow-beam antenna using the electric field on the two measurement planes; generating global error parameters; iteratively recovering the phase of the near-field electric field on the two planes; compensating for the propagation electric field using the conjugate gradient method; and terminating the iteration when the convergence condition is met. This invention has the advantages of fast convergence and high operating efficiency, making it suitable for engineering implementation.

The application belongs to the technical field of photoelectric detection, and discloses a kind of line spectrum confocal sensor's calibrating device and calibrating method.The device includes integrated standard, displacement generating device, displacement measuring device and driving device, driving device drives displacement generating device to generate vertical displacement, displacement measuring device measures the displacement generated in vertical direction, when displacement generating device occurs displacement in vertical direction, integrated standard is moved in vertical direction;Line spectrum confocal sensor measures the profile displacement of integrated standard in vertical direction, and compares the measured result with the result measured by displacement measuring device, to obtain the extreme position error of line spectrum confocal sensor in vertical measurement plane in transverse and vertical direction, and establishes error model.Through the application, the problems that existing line spectrum confocal sensor is difficult to calibrate and cannot be calibrated are solved.

The invention relates to a method for ascertaining a profile section of an object and / or a space by means of a 2D laser scanner having a laser distance measuring device, comprising the following method steps: • detecting distance measurement values and distance measurement directions which can be assigned to one another by means of the laser distance measuring device in a measurement plane radially swept through by a laser beam of the laser distance measuring device; • ascertaining a profile section from the distance measurement values and the distance measurement directions; • ascertaining an angle of inclination of the measurement plane relative to a reference plane; • correcting the profile section using the angle of inclination of the measurement plane. According to the invention, the angle of inclination of the measurement plane is ascertained using the laser distance measuring device. Furthermore, a 2D laser scanner and a system are proposed.