1587 results about "Angular range" patented technology

The invention discloses a reflective method and a reflective device for real-time in-situ measurement of film transmittance. By adding the reflecting surface, the transmittance of the thin film can be directly calculated through a formula only by respectively measuring the light intensity reflectivity R of the thin film and the light intensity reflectivity R'of the thin film-reflecting surface, and a precise optical model and complex fitting do not need to be established; reflected light of the thin film and light reflected back by the reflecting surface do not interfere with each other, amplitude superposition is not involved, only light intensity superposition is achieved, the transmittance can be obtained only by obtaining the light intensity, and the transmittance of the thin film is measured through the method of measuring the reflectivity twice. In the process of measuring the transmittance by using the reflection-type method, the thickness and the optical property of the film do not need to be known in advance, so that the method is very suitable for measuring and monitoring the growth process of the film in real time in situ; according to the reflection type method, all optical elements are arranged on one side of the thin film, the available angle range of incident light is far larger than the angle range of an ellipsometer, and the ellipsometer can be easily integrated with other film manufacturing equipment.

A light emitting system includes one or more first light sources operable to illuminate an environment from a first angular range, one or more second light sources operable to illuminate the environment from a second angular range different from the first angular range, a device comprising a sensor, and one or more processors that determine ambient light properties and first light property values for a spatial zone in the environment using the sensor when directing the one or more first light sources to illuminate the environment, determine second light property values in the environment using the sensor when directing the one or more second light sources to illuminate the environment, and adjust the light flux output of the one or more first light sources and the one or more second light sources based at least on the ambient light properties and the first and second light property values.

The invention provides an aircraft landing gear dismounting and mounting device, belongs to the technical field of aviation equipment, and solves the problem that in the prior art, landing gear dismounting and mounting equipment is difficult to meet the requirements for efficient, accurate and flexible dismounting and mounting in the modern aviation maintenance field. Comprising a frame, a moving frame is arranged on the inner side of the frame, and the moving frame is driven by a first driving device; a moving plate is arranged on the frame and is driven by a second driving device; an arc-shaped guide rail is arranged on the movable plate, a supporting frame is arranged on the arc-shaped guide rail, a lifting device and a fixing device are arranged on the supporting frame, and a clamp is arranged on the top of the lifting device. According to the undercarriage disassembling and assembling device, through cooperative operation of the first driving device, the second driving device and the lifting device, all-directional flexible adjustment of the tool on the X axis, the Y axis and the Z axis is achieved. Due to the design of the arc-shaped guide rail, the supporting frame can flexibly rotate within a certain angle range, and the adaptability and flexibility of the device are further enhanced.

Competing tradeoffs of overall footprint, weight, and performance impact the design of antennas for many applications. However, those for compact portable devices or mobile platforms exploiting global navigation satellite systems these are further compounded by seeking good performance over a wide angular range. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact broadband antennas which offer a low vertical profile relative to that provided by the common filar element approaches for high precision applications. Accordingly, through a combination of a dipole, a parasitic element, and additional ground elements to a convention ground plane the inventors provide broadband high performance antenna designs with low profile and low overall footprint.

The technical solutions described herein are systems and methods for multi-mode image capture device operation. The system can obtain, from a first image capture device in accordance with a first mode, a first set of images corresponding to a first range of angles about an axis. The system can obtain, from a second image capture device in accordance with the first mode, a second set of images corresponding to a second range of angles about the axis. The system can cause, responsive to an interruption of the first mode, the second image capture device to obtain a third set of images corresponding to the first range of angles about the axis in accordance with a second mode.

Antenna systems with beam tracking and scanning ability are described. The antenna systems include one or more reflectors and one or more feeds. The tracked or scanned beam(s) are produced by moving the feed(s) while the reflector(s) is kept static. This greatly reduces the complexity of the antenna beam tracking and scanning mechanism, while providing the highest possible antenna efficiency and gain in a wide angular range. Multiple beams and / or switched beams can also be achieved using multiple feeds and / or switches.

A system (100) for reconstructing digital subtraction angiography, DSA, images (110) representing a region of interest (120) in an object (130), is provided. The system includes one or more processors (140) configured to: receive (S110) cone beam projection data (150) acquired during a portion of a revolution of a source-detector arrangement (160s, 160d) of a cone beam X-ray imaging system (170) around the object (130); reconstruct (S120) the cone beam projection data (150) acquired from one or more orientations within a first angular range (Dq1), into a 3D mask image (170) representing the region of interest (120); and reconstruct (S130) the cone beam projection data (150) acquired from one or more orientations within a second angular range (Dq2), into a temporal sequence of 3D DSA images (110) representing the region of interest (120), based on the reconstructed 3D mask image (170).

The invention discloses a medium presser foot mechanism control method and a medium presser foot mechanism, and the method comprises the following steps: a control unit controls the rotation of a main shaft motor, a medium presser foot motor and a feeding motor according to a target pattern parameter, and obtains a target sewing stitch; the control unit obtains a given material pressing angle range from the expected material pressing angle range according to the cloth thickness and the sewing speed; the control unit obtains a given middle presser foot stroke from the expected middle presser foot stroke according to the cloth thickness and the middle presser foot height; according to the middle presser foot mechanism, a motor drives a crank, fisheye connectors A and B, a connecting rod, a pressing rod guide frame and other assemblies, and follow-up vertical movement of a middle presser foot is achieved. A motor is fixed through a support, an output shaft is connected with a driving crank, and the driving crank drives a fisheye connector A to be connected with a connecting rod and transmits motion to a pressing rod and a middle pressing foot. The pressing rod guide frame plays a guiding role and limits rotation of the pressing rod. The induction plate is arranged on the driving crank, when the middle presser foot is lifted to the highest point, the sensor can sense the induction plate, and position feedback is achieved.

The invention relates to the technical field of three-dimensional reconstruction, and provides a data synthesis method and a training method for monocular three-dimensional reconstruction based on synthesized data, and the method comprises the steps: 1, rendering a picture containing a specific object into a plurality of pictures I corresponding to the object at different angles; step 2, obtaining a mask m of the object based on the picture I, and 3, guiding the picture generation model to generate a new picture which conforms to the text description and retains the structural information of the specific object by utilizing the picture I by utilizing the mask m and the additionally input text description. According to the method, a large number of 3D models and picture pairs are generated through different viewpoints, styles and background conditions, a rich training data set is provided, and the generalization ability of the monocular three-dimensional reconstruction model can be remarkably improved through the diversity. By randomly applying disturbance within a certain angle range of a plurality of viewpoints (R, T), the adaptive capacity of the model to different camera poses is improved, and the robustness of monocular three-dimensional reconstruction is enhanced.

The invention relates to a calibration method, device and equipment of a laser scanning galvanometer performance detection device. The method comprises the steps that a laser is controlled to emit laser, a rotating table and / or a scanning galvanometer are / is controlled to rotate until a position sensitive detector detects that a light spot of the laser is located at a preset zero point position, and the deflection angle of the rotating table is determined as an initial angle; determining an angle range based on the initial angle and a preset angle, controlling the rotating table to rotate in the angle range, and obtaining light spot positions detected by the position sensitive detectors at multiple angles in the angle range; based on the light spot positions at the multiple angles, calibration parameters in the target calibration function are solved; the solved target calibration function is used for carrying out performance detection on the scanning galvanometer. By adopting the method, the laser scanning galvanometer performance detection device can be automatically calibrated.

A dual-output light source includes a laser-driven light source that generates light from a thermal plasma over an angular range of emission of at least 180 degrees. A first and second off-axis conical mirror are positioned within the at least 180 degrees of emission of the thermal plasma so that light generated by the plasma propagating from a first region of emission strikes a first focal point of the first off-axis conical mirror and light generated by the plasma propagating from a second region of emission strikes a first focal point of the second off-axis conical mirror. The first and second off-axis conical mirrors reflect light in a respective and first and second optical paths. A first optical filter having a first bandwidth is positioned in the first optical path. A second optical filter having a second bandwidth is positioned in the second optical path.

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.

A dual-output light source includes a laser-driven light source that generates light from a thermal plasma over an angular range of emission of at least 180 degrees. A first and second off-axis conical mirror are positioned within the at least 180 degrees of emission of the thermal plasma so that light generated by the plasma propagating from a first region of emission strikes a first focal point of the first off-axis conical mirror and light generated by the plasma propagating from a second region of emission strikes a first focal point of the second off-axis conical mirror. The first and second off-axis conical mirrors reflect light in a respective and first and second optical paths. A first optical filter having a first bandwidth is positioned in the first optical path. A second optical filter having a second bandwidth is positioned in the second optical path.

The invention discloses a photoetching method and system for holographic anti-counterfeiting printing, and relates to the field of printing data processing, and the method comprises the steps: receiving at least one grayscale image, coding preset holographic anti-counterfeiting information into the grayscale image, obtaining a holographic anti-counterfeiting grayscale image, and determining the spatial frequency and pattern complexity of the holographic anti-counterfeiting grayscale image; determining the frequency of the laser according to the spatial frequency and the pattern complexity; determining an exposure angle range of a laser and a scanning path on the substrate according to the fine pattern of the holographic anti-counterfeiting grayscale image; receiving a first instruction, and acquiring the intensity of reflected light on the substrate and the definition of an interference pattern on the substrate in real time according to the frequency and the exposure angle range of the laser; determining the optimal focal length position of the optical system according to the intensity of the reflected light and the definition of the interference pattern on the substrate; generating a second instruction according to the optimal focal length position; and carrying out photoetching on the fixed substrate through a laser to obtain a three-dimensional holographic anti-counterfeiting pattern.

The embodiment of the invention relates to the technical field of photovoltaic adjustment, and particularly discloses a method and a system for adjusting a vector angle of an offshore photovoltaic supporting device. According to the embodiment of the invention, real-time environment perception is carried out on the offshore photovoltaic area by determining the offshore photovoltaic area; based on the environment perception data, carrying out support stability analysis, and determining a stable angle range; based on the environmental perception data, photovoltaic optimization analysis is carried out, and a target vector angle is determined; and according to the target vector angle, vector angle adjustment is carried out on the plurality of photovoltaic support devices, and dynamic optimization adjustment is carried out in a stable angle range. Real-time environment perception can be performed on an offshore photovoltaic area, support stability analysis is performed based on environment perception data, a stable angle range is determined, a target vector angle is determined in the stable angle range, and dynamic optimization adjustment is performed, so that the safety of photovoltaic support is improved under the condition of ensuring that photovoltaic power generation meets the requirements; and the risk of damage to the photovoltaic module is effectively avoided.

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.

The invention discloses a cutting saw blade and a cutting device, and belongs to the technical field of cutting tools, the cutting saw blade comprises a saw blade body, a tool bit assembly is arranged at the outer diameter of the saw blade body, the tool bit assembly comprises a first tool bit and a second tool bit, the radial outer end points of the first tool bit and the second tool bit are located on the same circle, and the radial outer end points of the first tool bit and the second tool bit are located on the same circle. The first tool bit and the second tool bit comprise a first cutting face and a second cutting face, the first cutting face and the radius where the outer end point of the first tool bit is located form a first cutting angle, and the second cutting face and the tangent line where the outer end point of the first tool bit is located form a second cutting angle. The angle range of the first cutting angle and the second cutting angle is 10 degrees to 15 degrees. The cutting device comprises the cutting saw blade and further comprises a cutting tool and a control assembly, the cutting saw blade and the control assembly are arranged on the two sides of the cutting tool respectively, a cutting track is arranged on the cutting tool, and the cutting saw blade reciprocates along the cutting track.

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.

An aircraft including at least one unducted turbine engine for the propulsion of the aircraft. The turbine engine comprising: a rotor and a stator comprising a plurality of stator blades extending radially with respect to the longitudinal axis, each stator blade being defined, in a plane transverse to the longitudinal axis, by an angular position; and at least one aerodynamic obstruction positioned close to the turbine engine. The stator of the turbine engine comprises stator blades having a first chord, referred to as conventional blades, and at least one stator blade having a second chord larger than the first chord, referred to as the elongate blade, said at least one elongate blade being positioned in an interference angular range defined opposite the aerodynamic obstacle, so as to increase the straightening of the airflow from the rotor in the interference angular range.

The invention provides a method and device for identifying a long corridor scene, a medium and a program product, and relates to the technical field of laser mapping. According to the embodiment of the invention, an initial angle range in which the number of matching points in a preset angle range is greater than a first number threshold value is determined; determining each other angle range meeting a preset number of matching points in the preset angle range, and respectively determining the maximum angle difference between each other angle range and the initial angle range; when the maximum angle difference is larger than the first angle threshold value, the situation that the long corridor scene is mistakenly recognized only by determining whether the constraint direction is single or not in the related technology can be recognized, and therefore the recognition accuracy of long corridor scene recognition is improved.

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.

A shutter panel includes a frame, and a louver coupled to the frame for rotation about a longitudinal axis across a given angular travel range of the louver. The shutter panel also includes a louver closure assembly operable to automatically rotate the louver into a closed position when the louver is moved into a specific angular range of louver positions within its angular travel range. For instance, in an exemplary implementation, the louver closure assembly is configured to linear translation into rotational movement of the louver.

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.

To enable determination of the presence or absence of a defect such as a crack and the like present in an inner surface of an inspection object in an ultrasonic inspection method and device and program.SOLUTION: An ultrasonography method has the steps of: adjusting a convergence point of an ultrasonic signal which is transmitted from a probe to an inspection object, to a position deviated in a plate thickness direction with respect to an inner surface of the inspection object; transmitting the ultrasonic signal toward the inspection object from the probe, and oscillating a transmission direction of the ultrasonic signal within a preset prescribed angle range; receiving a secondary creeping wave of the ultrasonic signal reflected from the inspection object by the prove for each specified angle in the angle range to acquire the creeping wave; receiving a mode conversion wave of the ultrasonic signal reflected from the inspection object for each specified angle in the angle range to acquire the mode conversion wave; and determining presence or absence of a defect of an inner surface of the inspection object on the basis of the secondary creeping wave and mode conversion wave.SELECTED DRAWING: Figure 3

The utility model provides an optical module, a vehicle lamp and a vehicle. The optical module includes: a light source; the light shielding plate is arranged on the light emitting side, away from the light source, of the light condenser and is located in the middle of the light condensing module in the vertical direction, and a cut-off line forming structure extending in the front-back direction is arranged in the middle of the light shielding plate in the width direction; wherein the cross section of the cut-off line forming structure comprises a first inclined section AB, a horizontal section BC and a second inclined section CD which are sequentially arranged from the middle part to one side and are connected, coordinates of two ends of the horizontal section BC are respectively B (0, 0.57) and C (k, 0.57), and an included angle ABC between the first inclined section AB and the horizontal section BC is 135 degrees; the angle range alpha of the included angle BCD between the second inclined section CD and the horizontal section BC is larger than or equal to 160 degrees and smaller than 180 degrees; wherein k ranges from 2.5 to 3.5.

An impeller includes a hub having an axial direction as a rotation axis and extending from a first end to a second end, and including an end surface and a first wall. The end surface is positioned at the first end of the hub, one end of the first wall extends around an entire periphery of the end surface and radially outwardly extends at an angle toward the second end in the axial direction. A length of extension of the first wall is greater than 50% of a length of extension of the hub. The impeller further includes a plurality of blades, the proximal ends of which extend from the periphery of the hub in a radial direction. A predetermined range of angle is formed between the first wall and the axial direction, and the predetermined range of angle is between 3 degrees and 45 degrees.