841 results about "Angular range" patented technology

Endoscope has vertical bending operation wires transmitting a pulling force to a bending portion of an insertion portion, a vertical bending pulley having pulley grooves on an outer circumference, and wire guides in a partial region in a circumference direction of each pulley groove and guiding the vertical bending operation wires to be wound in the respective pulley grooves. The pulleys rotate within a 180-degree angular range, and a width of a bottom portion of each pulley groove allows each wire to be wound for at most two revolutions. The width of the bottom portion of the pulley groove is narrowed down with each wire guide so that each wire is wound only one revolution in a rotation axis direction of each pulley, and a tapered shape of each wire guide guides the wire to be wound in the partial region to the bottom portion of each pulley groove.

The present invention relates to a shield tunnel segment dislocation measurement method based on three-dimensional laser scanning, mainly solving the technical problems of low efficiency, high cost, unsafe high-altitude operation, etc., of existing manual shield tunnel segment dislocation amount measurement technology. The method comprises the steps of: S1, generating a grayscale image on the basis of tunnel laser point cloud data, and performing edge detection on the grayscale image; S2, on the basis of the edge-detected image, collecting statistics about column grayscale cumulative values of the edge-detected image, and realizing circumferential joint position identification by means of threshold determination; S3, selecting a certain angle range on the left and right of a circumferential joint to divide different intervals, collecting statistics about an interval densest radial vector, and calculating a circumferential joint dislocation amount; S4, designing a feature convolution kernel on the basis of shape features of a longitudinal joint, and using the feature convolution kernel to perform convolution calculation on a segment grayscale image in a sliding window manner to identify the position of the longitudinal joint; and S5, selecting point cloud data within a certain range on the left and right of the longitudinal joint, screening for local valid points, and calculating a longitudinal joint dislocation amount. The present invention achieves automatic identification of a longitudinal joint of shield tunnel segments and rapid measurement of a dislocation amount.

The invention relates to the technical field of geophysical exploration equipment, and particularly discloses a double-top umbrella type multi-angle adjustable transient electromagnetic transmitting coil array detection device which comprises a main supporting system, a framework supporting system, a coil system, a multi-angle adjusting mechanism and a rapid storage system. The device has the beneficial effects that accurate adjustment in a continuous angle range is realized, and the adaptability of the device to different exploration environments is improved; a double-coil system design is adopted, so that two typical working modes are realized; in structural design, a double-top umbrella type folding structure is combined with a light-weight material, so that the weight of equipment is reduced. According to the device, conversion of multiple detection modes is achieved, traditional multiple fixed angle devices are replaced, the equipment investment cost is reduced, and the equipment operation efficiency is improved.

The invention provides a light beam scanning device of an integrated photonics chip and a test method. The light beam scanning device of the integrated photonics chip comprises a chip sample table, a chip sample table base, a light beam receiver connected with a lens cone and a horizontally arranged turntable base, the lens barrel is arranged above the turntable base, and a diaphragm adjusting structure and at least four lens groups are arranged in the lens barrel; the central point of the chip sample table base is overlapped with the central point of the turntable base, the chip sample table base is positioned above the turntable base, and the chip sample table is vertically arranged at the central point of the chip sample table base. Through switching of different lens groups in the lens cone, measurement of far and near fields of the to-be-tested chip is realized by using the same lens cone, the lens cone is arranged on the turntable base, and the test angle range can be adjusted according to specific test requirements so that various chip test requirements can be met.

A method of testing a vehicle includes positioning the vehicle on a dynamometer, operating a propulsion system to rotate drive wheels at a one or more predetermined speeds while actively adjusting a rotational position of a steering wheel to maintain straight vehicle travel on the dynamometer, measuring angle data of the steering wheel during the active adjusting of the rotational position of the steering wheel, checking the measured angle data to determine if it is outside a predetermined angular range, and outputting, in response to the angle data being outside the predetermined angular range, at least one of a repair ticket and a vehicle fault code.

The application provides an angle of arrival measurement method, an electronic device, a readable storage medium and a chip, and relates to the technical field of wireless positioning. The method is applied to an electronic device, and the electronic device comprises a first antenna and a second antenna. The antenna radiation field patterns of the first antenna and the second antenna are similar within a first angle range around the electronic device and are not similar within a second angle range around the electronic device. The method comprises the following steps: determining the difference between target parameters measured by the first antenna and the second antenna according to a wireless signal; determining the angle of arrival range of the wireless signal according to the difference; wherein the angle of arrival range is the first angle range or the second angle range; and measuring the angle of arrival of the wireless signal by using the first antenna and the second antenna according to the angle of arrival range. The technical scheme provided in the embodiment can improve the accuracy of angle of arrival measurement.

The invention provides a full-section detection method, device and equipment for reinforcing a steel rail welding seam and a storage medium, and relates to the technical field of nondestructive testing. The method comprises the following steps: respectively arranging a plurality of first phased array probes on rail head treads and rail bottom surfaces of a first steel rail and a second steel rail, and arranging a second phased array probe right above a welding seam; the detection method comprises the following steps: determining optimal parameters of a transducer based on the material of the steel rail, the size of the cross section of the steel rail and the sound pressure intensity at a preset focusing depth position; determining the optimal scanning angle range of the first phased array probe based on the propagation velocity of the ultrasonic longitudinal wave in the wedge block and the steel rail, the propagation velocity of the ultrasonic transverse wave in the steel rail and the Snell's law; and controlling the first phased array probe to carry out sector scanning imaging within the optimal scanning angle range, and controlling the second phased array probe to carry out zero-degree line scanning imaging, so as to detect the full section of the welding seam. According to the invention, the welding seam can be accurately detected without dismounting the clamping plate.

An electronic device is provided. The electronic device includes a housing including a first housing and a second housing, a hinge unit configured to enable the first housing and the second housing to rotate, a first display disposed in the first housing and the second housing, at least one camera, at least one sensor, at least one processor, and memory storing instructions, wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to identify, by using the at least one sensor, whether the electronic device is in a folded state within a specified angular range, identify whether an object is detected in an image acquired by means of the at least one camera, and based on the electronic device being folding within the specified angle range and the object being detected within the image, activate an auto-framing function.

The present invention provides a computer-implemented method for X-ray analysis. The method includes receiving X-ray analysis data from an X-ray detector having multiple detection channels. The X-ray analysis data includes angular scan intensity data obtained by measuring X-ray intensities when successively scanning the X-ray detector. A series of intensity measurement values ​​is acquired for each detection channel. Each series of intensity measurement values ​​is an intensity angular scan. An angular offset is determined for each detection channel. The method further includes determining, for each of a plurality of detection angle bins, an intensity contribution factor for at least one of the intensity measurements. The intensity contribution factor is determined according to an angle range associated with the detection angle bin and the angular offset of the detection channel. For each of the plurality of detection angle bins, a binned intensity is determined based on the intensity of the at least one intensity measurement value and its corresponding intensity contribution factor.

The invention relates to the technical field of electron microscopic imaging, in particular to a correction method and device for geometric distortion in scanning electron microscope measurement, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a scanning electron microscope image of a standard sample; calculating an orthogonal included angle parameter and a length-width ratio parameter of the scanning electron microscope image; iteratively adjusting the angle correction parameter and the gain correction parameter under a fixed scanning rotation angle until a preset local calibration constraint condition is met; verifying the orthogonal included angle parameter and the length-width ratio parameter under each scanning rotation angle; and when the orthogonality included angle parameter and the length-width ratio parameter do not meet a preset global stability constraint condition, adjusting a relative gain coefficient, and re-executing calibration verification under each scanning rotation angle until a full-angle correction requirement is met. By adopting the method, high precision and stability of imaging correction can be kept in a full-angle range.

The invention belongs to the technical field of equipment screen angle adjustment, and aims to solve the problem of low efficiency of a method for rotating a computer screen by adjusting a mechanical bracket. The invention provides a method and a system for dynamically adjusting the posture of a notebook screen. The method comprises the following steps of: acquiring facial feature information of a user in front of the screen in real time; determining a current face rotation angle of the user based on position parameters of feature extraction points in the face feature information; obtaining an optimal angle range of a notebook computer screen based on the face rotation angle and a preset optimal vertical view field of a user; and controlling the notebook screen to perform angle adjustment based on the optimal angle range. The automatic rotation function of the screen can be achieved, the computer screen directly faces the face and eyes of a user in real time, the sitting posture of the user can be corrected, and the eyesight of the user is protected.

X-ray systems, including apparatus, methods, and medium-encoded computer program products, to obtain computed tomography scan data (e.g., for limited angle computed tomography) include: a stationary X-ray source; and at least one detector configured to obtain limited angle computed tomography scan data of an object, the limited angle computed tomography scan data including projections of the X-rays after interaction with the object having been moved through an angular range with respect to at least one straight line between the stationary X-ray source and the at least one detector, and a conveyor system moves the object in a product handling line, a component of the conveyor system rotates the object around an axis that is normal or oblique to a travel direction of the conveyor system, and the scan data includes the projections of the X-rays after the interaction with the object having been rotated through the angular range around the axis.

An eyewear display device expands a field of view by projecting display light at multiple ranges of input angles to a waveguide (600) employing multiple portions of an incoupler (514) or multiple incouplers (514, 414) corresponding to the different angular ranges of display light to guide light to an exit pupil expander (416) configured to receive the display light from the different angular ranges and an outcoupler (608) that are sized to fit within an eyeglasses lens. The display light that is input from the different angular ranges is guided by the incouplers to be overlapped at an exit pupil expander (or, in some embodiments, at multiple exit pupil expanders that are overlaid with each other) to reduce the total ray footprint at the exit pupil expander.

Described herein are systems and techniques for underwater leak detection and monitoring. Georeferenced location information of a seafloor lander can be determined based on location information of marker buoys deployed to the seafloor surface. Acoustic sensor data can be obtained from an acoustic sensor rotatably coupled to the seafloor lander, wherein the acoustic sensor is rotated through a configured angular range one or more times. An onboard processing engine of the seafloor lander can perform in-situ detection of gaseous leaks from the seafloor surface by analyzing the acoustic sensor data. A corresponding location of the gaseous leak can be determined based on the georeferenced location information of the seafloor lander and relative position information between the acoustic sensor and the one or more gaseous leaks. The seafloor lander can transmit leak detection information indicative of the one or more gaseous leaks and the corresponding location to a surface receiver.

The invention provides a driver distracted driving detection method and device, terminal equipment and a program product, and the method comprises the steps: obtaining a real-time image of a vehicle driven by a driver when the driving speed of the vehicle is greater than a preset speed threshold value; determining a real-time head pose and a real-time sight angle corresponding to each real-time image; the real-time head pose comprises a real-time head pitch angle and a real-time head yaw angle; the real-time sight angle comprises a real-time sight pitch angle and a real-time sight yaw angle; if the continuous preset number of the real-time head poses are within the preset head pose range and the real-time sight angles exceed the preset sight angle range, it is judged that the driver has the distracted driving behavior. According to the method, whether the driver has the distracted driving behavior or not can be judged by combining the real-time head posture and the real-time sight angle of the driver in the vehicle driving process, whether the driver has the distracted driving behavior or not can be more accurately determined, and misjudgment is avoided.

The invention provides an ion beam irradiation configuration optimization method based on a computer storage medium, and aims to improve treatment accuracy and effectiveness. According to the method, image data of a target area are obtained through three-dimensional scanning, three-dimensional discretization processing is carried out, and a voxel angle range matrix is constructed. The preference of each voxel for different ion beam energy is quantified by using a favor value function, and the energy layer of each angle is dynamically calculated and distributed in combination with the optimization of the irradiation angle. The system can monitor feedback data in real time, automatically adjust energy configuration and irradiation angle, and ensure optimal energy coverage of a target area. According to the method, the treatment effect is improved, damage to normal tissue is reduced by accurately controlling energy transmission, and the safety and efficiency of treatment are improved. Through the optimization and dynamic adjustment mechanism, a personalized treatment scheme can be provided for each patient, and efficient and accurate treatment on a complex target region is achieved.

The invention relates to the technical field of unmanned aerial vehicle application, and discloses a multi-degree-of-freedom dynamic light field system based on an unmanned aerial vehicle, a cooperative control method of the multi-degree-of-freedom dynamic light field system and a dynamic light field device. The ground control station is used for editing programs and sending instructions; the unmanned aerial vehicle group is composed of a plurality of unmanned aerial vehicles carrying the dynamic light field devices; the communication unit is used for establishing a data link between the ground control station and the unmanned aerial vehicle group; and the main controller on each unmanned aerial vehicle sends cooperative control signals to the flight control system, the first driving mechanism and the second driving mechanism of the unmanned aerial vehicle. Through the synergistic effect of the first driving mechanism and the second driving mechanism, the rotation of the rotating drum in the vertical direction can be controlled, and meanwhile, the rotation of each ball head assembly in the horizontal direction can also be controlled, so that irradiation of each laser module in different azimuth angles within a certain angle range can be realized, and the display effect of the unmanned aerial vehicle group light curtain is improved.

The invention discloses a regenerated wafer scanning method, and relates to the technical field of semiconductor wafer scanning, and the method comprises the steps: obtaining the identification information of a target wafer transmission box when the target wafer transmission box is detected; detecting the in-place state of the wafer through a light curtain sensor, and generating a slot mapping table; controlling a preset micro-rotation mechanism to carry out micro-rotation on the wafer at each slot position within a set angle range, and collecting an annular structure light image; constructing polar coordinates and calculating a first attitude angle of each wafer; driving a micro-rotation mechanism to adjust the wafer to a preset reference angle according to the first attitude angle to obtain a standard attitude wafer; the mechanical arms are driven to be sequentially conveyed to a scanning station; respectively controlling a rotary positioning module to rotate in a first angle range and a second angle range, and acquiring a coded image and a spectral image; the wafer code is analyzed, confidence verification is carried out, and a wafer process type label is identified; and warehousing and recording the wafer codes, the process labels and the transmission box identification information. According to the invention, the storage management efficiency of the regenerated wafer can be effectively improved.

The invention discloses a radar and photoelectric equipment detection error solving method. The method comprises the steps of S1, radar and photoelectric equipment base levelness error detection, S2, equipment orientation and pitching zero position reference error detection, S3, radar reference error detection, S3, radar and equipment angle detection, S4, error matrix fitting, S5, error value correction and S6, error correction. According to the radar and photoelectric equipment detection error solving method, a measurement tool, a calibration device, an unmanned aerial vehicle and carrying equipment are finely prepared and calibrated, the accuracy of a measurement result is ensured, in the step S3 and the step S4, collected error data are processed, an angle error matrix is constructed, and the accuracy of the measurement result is ensured. The generalization ability of the fitting model is evaluated by adopting technical means such as cross validation, all angle ranges needing to be measured are comprehensively covered by planning flight paths in different directions, heights and distances, error data are obtained, model parameters are optimized, an angle error calibration function is obtained, and the effectiveness and accuracy of the angle error calibration function are evaluated through verification.

The frequencies of carrier waves respectively emitted from a first parametric speaker (300A) and a second parametric speaker (300B) are 100 kHz or greater and are the same as each other. Audible sound reproduced by the first parametric speaker (300A) and audible sound reproduced by the second parametric speaker (300B) have opposite phases from each other. The first parametric speaker (300A) and the second parametric speaker (300B) are arranged at a pitch interval (P) of 10-20 cm in a horizontal direction. The first parametric speaker (300A) and the second parametric speaker (300B) each have a directional property in which there is an angular range of 35° to 60°C in the horizontal direction, centered around the center 0° of the audible sound emission direction, in which the acoustic pressure that decreases from the peak acoustic pressure at the center 0° is 6 db or less.

An apparatus for attaching a gimbal for an antenna to a structure, the apparatus including a pivot element for attachment to the structure, wherein the pivot element includes a first hole for rotatably attaching the gimbal to the pivot element using a first fastening element, wherein the pivot element includes a second hole, which is an oblong hole, for guiding a rotational movement of the gimbal within an angular range around an axis of rotation associated with the first hole, wherein a first surface of the pivot element, which faces the gimbal, when the gimbal is attached to the pivot element, is convex.

The invention provides a liquid crystal optical phased array imaging system and a design method thereof, and belongs to the technical field of liquid crystal optical phased arrays. The system comprises a camera, a lens, a beam splitter prism, a liquid crystal spatial light modulator, a super lens and a computer, and is suitable for a visible light band. Non-mechanical light beam deflection is achieved through the liquid crystal spatial light modulator, angle amplification and dispersion compensation functions are achieved in combination with the super lens, and the problems that a traditional mechanical light beam deflection technology is large in size and short in service life are solved, and the problems that an existing liquid crystal optical phased array is small in angle range and imaging aliasing is caused by dispersion are solved; the superlens adopts a three-layer nanostructure unit stacking design, the upper layer is a dispersion compensation structure, the lower layer is an angle amplification structure, and large-angle imaging and efficient spectrum utilization are realized through phase modulation; the invention has the advantages of compact structure, small volume, low cost, high stability and the like, and is suitable for the fields of laser radar, space optical communication, infrared tracking and the like.

The invention discloses a space target multi-dimensional detection device and method, and relates to the technical field of photoelectric imaging detection, and the device comprises a tracking turntable subsystem, a telescope subsystem, a multi-spectral polarization imaging subsystem and an image processing display subsystem. The multispectral polarization imaging subsystem is connected with the image processing and displaying subsystem; the telescopic subsystem and the multispectral polarization imaging subsystem are integrated on the tracking turntable subsystem; the tracking turntable subsystem realizes rotation in a set angle range so as to drive the telescopic subsystem and the multispectral polarization imaging subsystem to rotate; the telescopic subsystem obtains a multi-field-angle light path and makes the light path enter the multi-spectrum polarization imaging subsystem; the multi-spectral polarization imaging subsystem determines polarization images under different field angles according to the multi-field angle light path; and the image processing display subsystem is used for splicing and fusing the polarization images under different field angles based on an image processing algorithm to obtain a wide-area detection image. According to the invention, the space coverage rate and resolution of observation are improved.

Mounting device for receiving at least one mirror with at least one marking on a mirror surface for checking at least one pupil axis in an arc with sight and vertical plane of the chord movement, characterized in that at least one mirror can be firmly connected or screwed to the central part of the arc by means of the mounting, wherein at least one inclination angle of the mirror with respect to at least one axis in an angular range ≥ 0° can be selected in the orientation of a mirror relative to the central part.

A radiation-emitting device includes an optoelectronic component for emitting first electromagnetic radiation. The radiation-emitting device also includes a conversion element having an entrance surface and an exit surface. The radiation-emitting device further includes a dielectric mirror on the exit surface. The radiation-emitting device is configured such that first radiation emitted by the component during operation enters the conversion element via the entrance surface. The conversion element is configured for converting the first radiation into second electromagnetic radiation, which subsequently exits the conversion element via the exit surface. The dielectric mirror is transmissive to second radiation that is incident at angles of incidence in a predefined first angle range, and is reflective for second radiation that is incident at angles of incidence in a predefined second angle range.

The invention discloses a hinged vehicle hinging angle detection method, device and equipment and a medium, and relates to the field of auxiliary driving and unmanned driving. The hinged vehicle hinging angle detection method comprises the steps that forward radar point cloud of a current hinged vehicle is acquired; filtering the forward radar point cloud according to the point cloud cutting angle range and / or a prior acquisition distance of the front frame object to be identified to obtain a target point cloud to be processed matched with the front frame object to be identified; according to the type of the to-be-identified front frame object and the target to-be-processed point cloud, determining hinge angle calculation associated data; and determining an included angle between front and rear frames of the articulated vehicle according to the articulated angle calculation associated data and the angle calculation error. According to the technical scheme of the embodiment of the invention, installation of a sensor at a hinge point can be omitted, the cost is reduced, and the hinge angle detection effect is improved.

The invention discloses a hemispherical gyroscope azimuth angle tracking method, electronic equipment and a computer readable storage medium, and the method comprises the following steps: S1, running a hemispherical resonator gyroscope at a constant rotating speed, and executing a rate tracking action; s2, judging whether the sampling round reaches a set sampling round or not, and if yes, ending operation; if not, adding 1 to the sampling round, changing the rotating speed of the hemispherical resonator gyroscope, and turning to the step S1; s3, determining a final tracking parameter according to the tracking parameters of all rounds to form a rate tracking control model; and S4, collecting an electrode detection signal of the hemispherical resonator gyroscope in a normal working mode in real time, carrying out combinatorial operation on the electrode detection signal and the tracking rate at the previous moment to obtain a virtual detection signal, carrying out demodulation calculation to obtain a tracking error, and calculating the vibration mode azimuth angle of the hemispherical resonator gyroscope. The real value of the range can be tracked in real time, and control force output in the full-angle range is achieved.

The invention discloses an airspace guiding covariance matrix self-adaptive beam forming method based on sound pressure and vibration velocity combined processing, belongs to the field of underwater acoustic detection, and particularly relates to the airspace guiding covariance matrix self-adaptive beam forming method. The objective of the invention is to solve the problem that when sound pressure and vibration velocity three-channel data are used, the SSTCM algorithm cannot carry out azimuth estimation in a specific angle range. The method comprises the following steps: 1, constructing a vector double-row array receiving data model; 2, obtaining a combined vibration velocity Vc (t); 3, based on the combined vibration velocity Vc (t) and the sound pressure channel data P (t), constructing a sound pressure and vibration velocity covariance matrix in a (P + Vc) (P + Vc) combined form; 4, calculating an airspace guiding covariance matrix based on the sound pressure vibration velocity covariance matrix and the observation orientation; and 5, estimating a direct current component in the airspace guiding covariance matrix as an orientation estimation result.

The invention discloses a light scanning method, which comprises the following steps that: a first light deflection device deflects an incident light beam by a plurality of first deflection angles, and projects the deflected light beam to a polarization expanding device; the polarization expanding device amplifies the deflection angle of the deflected light beam in the corresponding deflection direction by a preset multiple, and projects the expanded light beam to the corresponding position of the second light deflection device; and the second light deflection device deflects the expanded light beam at a preset second deflection angle so as to project a scanning light beam. The light deflection angle can be continuously and finely adjusted within a larger angle range, and the structure of the light deflection device is miniaturized.

The invention provides a control assembly and method of a medical instrument and the medical instrument. The control assembly comprises a first interface; the second interface comprises an operation part and a body part; and the control unit is configured to control the actuating mechanism to deflect relative to the axis according to the movement of the first interface, control the jaw of the actuating mechanism to be closed according to the rotation of the operating part of the second interface, and control the actuating mechanism to rotate around the axis according to the position of the body part of the second interface. When the body part is in the first area, the control unit controls the executing mechanism to rotate in a limited angle range; when the body part is in the second area, the control unit controls the executing mechanism to continuously rotate in the preset direction. The actuating mechanism can rotate within a limited angle range or within an infinite angle range according to needs, and is suitable for more application scenes.