2191results about "Optical apparatus testing" patented technology

A computer implemented system configured for receiving obtaining sensor data comprising one or more displacements as a function of time of one or more targets attached to a structure in response to point loads applied to the structure; optionally receiving image data representing images of the vehicles comprising the point loads traversing the structure; and determining, from the displacements, at least one of a health status of the structure, or forces applied by one or more of the point loads.

The invention, which relates to the technical field of LED lighting testing, discloses a full-life-cycle accelerated testing system for an intelligent high-power LED lighting device, comprising an environmental parameter detection module, a full-life-cycle testing module, a heat dissipation system module, a service life prediction module and a failure analysis module. The environmental parameter detection module collects multi-field coupling environmental parameters; the full life cycle test module establishes an acceleration factor mathematical model, calculates an acceleration coefficient and determines an acceleration test working condition parameter; the heat dissipation system module selects and adjusts the cooling intensity of the natural convection unit or the flow boiling unit; the life prediction module constructs a life physical-statistical hybrid prediction model and predicts the residual life of the device; the failure analysis module analyzes a heat-electricity-light-stress coupling failure mechanism and generates a performance optimization scheme. According to the invention, the accelerated test and performance optimization of the whole life cycle of the LED lighting device are realized through the cooperative work of multiple modules, and the test efficiency and accuracy are improved.

The present disclosure provides an optical component, which may be a metasurface grating, including (a) a substrate; and (b) an array of subwavelength-spaced phase-shifting elements, which are tessellated on the substrate to produce, when illuminated with a polarized incident light, a diffracted light beam with a distinct polarization state for each of a finite number of diffraction orders, wherein the finite number is 2 or more.

There is provided a photonic integrated apparatus for determining an orientation and / or a position of an optical waveguide, by measuring a relative intensity and a relative phase difference of the probe light signal incident on a sensor array. The phase profile of the probe light signal projected spatially on the sensor array is particularly sensitive to small changes in the optical probe's orientation and distance. The apparatus measures the relative intensity and relative phase difference of the probe light signal incident on a sensor array. A photonic integrated sensor circuit comprises the sensor array and one or more optical interferometric circuits. Changes in the sensed relative intensity and relative phase difference of the probe light signal, as sampled by the sensor array, indicate variations in the relative orientation and / or distance between the optical waveguide and the sensor array.

Apparatus and methods for monitoring the status of a floating roof. The floating-roof tank assembly has: an impermeable roof section, and a floating-roof seal configured to span between the impermeable roof section and components of a container. One or more deformable floats are attached to the roof section to provide buoyancy so that the roof floats on top of the liquid contained in the container. To monitor the status of the floating roof tank, it is provided with a fiber optic sensor array comprising one or more fiber optic sensors. A light source configured to transmit light to the fiber optic sensors and a receiver configured to detect light from each fiber optic cable after it has interacted with the fiber optic cable. Based on the received light, a controller configured to process the light received by the receiver to determine the status of the floating roof tank.

A method for monitoring pipeline integrity is provided. The method includes obtaining, using at least one hardware processor, acoustic signal captured by at least one optical fiber arranged along a pipeline. The method includes inputting, using the at least one hardware processor, the acoustic signal to a machine learning model. The machine learning model is trained to execute a first analysis on a first representation of the acoustic signal and a second analysis on a second representation of the acoustic signal, the first analysis being independent to the second analysis. An output of the trained machine learning model is at least one of a first result based on the first analysis or a second result based on the second analysis. The method includes determining, using the at least one hardware processor, an indication of pipeline integrity based on the at least one of the first result or the second result.

The invention discloses automatic aging equipment for a vehicle-mounted screen. The automatic aging equipment comprises an aging furnace body, a material receiving translation machine, a feeding transfer table, a ground rail travelling crane, a jig aging bin, an automatic cooling line, an elevator, a wire pulling translation machine, a discharging translation machine, a jig return line and an aging jig. The material receiving translation machine, the feeding transfer table, the ground rail travelling crane, the jig aging bin, the automatic cooling line, the elevator, the line pulling translation machine, the discharging translation machine and the jig return line are sequentially connected to form an automatic production process, and the aging jig flows among the stations and is used for bearing vehicle-mounted screen products, so that the labor cost of a factory is effectively saved, and the engineering energy consumption is reduced.

The invention relates to the technical field of circuit breaker switch monitoring, and provides a method for monitoring the position state of a circuit breaker switch based on a video recognition technology, and the method comprises the steps: collecting a real-time image of a circuit breaker through a camera device, judging the physical state of the circuit breaker, and determining a first judgment result; acquiring real-time data of the relay protection device, recording the operation state of the circuit breaker, and determining a second judgment result; inputting the first judgment result and the second judgment result into a preset signal response device to generate a corresponding response action; wherein the response action comprises an opening action, a fault action and a closing action.

Disclosed herein is an optical frequency comb generator for a distributed acoustic anomaly detection system. The system can include a continuous wave frequency modulated laser source configured to generate a laser signal. The system can include an acousto-optical modulator configured to modulate the laser signal by altering an amplitude and / or frequency of the laser signal based on an RF drive signal applied to the AOM, and to output an optical pulse with multiple frequency sidebands based on the modulation. The output can form an optical frequency comb usable detecting and locating acoustic anomalies within a structure under observation.

Provided are a visual inspection device, a visual inspection method, and a visual inspection program that make it possible to accurately evaluate a subject having optical transparency.　The present invention is provided with: a mounting part (10) on which a lens L is mounted; an illumination unit that is capable of irradiating the mounting part (10) with illumination light having a plurality of shapes; an image capturing unit (30) that captures an image of the mounting part (10); a driving unit that changes the relative positions of the mounting part (10), the illumination unit (20), and the image capturing unit (30); and a processor that performs control for causing the image capturing unit (30) to capture an image of the lens L a plurality of times, while changing the relative positions and the shape of the illumination light. The processor causes the image capturing unit (30) to capture an image of the lens L including reflected light formed by reflection of the illumination light by the lens L, as well as an image of the lens L including transmitted light formed by transmission of the illumination light through the lens L.

A device for interface shape of an optical element including at least one low-coherence light source, at least one optical sensor, an interferometric device illuminated by the light source and configured for shaping at least one measurement beam and at least two reference beams, directing one measurement beam to the element to pass through the interfaces, and directing the light from at least two interfaces to the sensor or sensors, each sensor globally configured for detecting at least two interference signals resulting respectively from interferences between the measurement beam reflected by one of the at least two interfaces and one of the reference beams; the measurement device also including a positioner for positioning a coherence area at the level of each interface and a digital processor for producing, from the interference signals, an item of information of the shape of each interface according to a field of view.

The invention discloses an intelligent diagnosis system for health and collapse risks of a vertical shaft structure, and relates to the technical field of mine safety monitoring. The acute lesion diagnosis module is used for diagnosing acute physical damage of a sensing optical fiber so as to generate a spatial data confidence index map; the chronic lesion compensation module is used for compensating chronic signal drift caused by internal residual stress relaxation of the sensing optical fiber so as to establish a dynamic zero correction vector; the signal fusion processing module purifies the original apparent strain information through a nonlinear weighting algorithm according to the output of the first two modules, and reconstructs a net structure strain field calibrated by the space-time drift of the instrument; and the collapse risk prediction module is used for intelligently diagnosing and predicting the structural health state and the collapse risk of the vertical shaft. According to the method, the authenticity of monitoring data can be improved from the source, the false alarm rate is greatly reduced, and long-term and weak structural evolution omen are effectively captured.

The invention discloses a vibration monitoring and displacement identification method for a towering steel structure based on machine vision, and relates to the technical field of towering steel structures. Comprising the following steps: S1, visual acquisition and reference calibration: arranging visual acquisition equipment in the height direction and the circumferential direction of the towering steel structure according to mechanical characteristics of a vertical stiffness mutation region and a dynamic response sensitive part of a geometric asymmetric distribution characteristic of the structure; a three-dimensional coordinate system is established based on a structure installation reference surface, fixed reference monitoring points are arranged in a tower foot symmetric area and a mast antenna root, three-dimensional coordinate data of the reference points are synchronously collected, the collection range completely covers a node concentration area and a key stress part of a structure transparent area, and a continuous image sequence of the structure surface is captured in real time; the resolution and the sampling frequency of the visual acquisition equipment are determined according to the inherent frequency of the structure and the vibration response characteristics, and calibration is completed through reference point coordinates after the equipment is installed; s2, carrying out image preprocessing and feature enhancement; S3, carrying out feature point extraction and trajectory tracking; S4, carrying out vibration displacement calculation and twin fusion; and S5, carrying out multi-source verification and structural state linkage treatment.

The invention discloses a display light color detection system, and relates to the technical field of low-brightness display light color detection, and the system comprises a dynamic modulation module which is configured to carry out the high-frequency pulse modulation of a dark-state signal of a detection object, and is used for enabling the dark-state signal to carry a modulation component of a characteristic frequency; the time sequence division acquisition unit comprises a high-speed optical shutter assembly and a detector, and the high-speed optical shutter assembly synchronously switches the on-off state of an optical path according to the characteristic frequency; according to the invention, through high-frequency pulse modulation of dark state signals, time-sequence-divided acquisition of noise and signals and time-frequency domain combined decoupling, traditional hardware limitation is broken through, ultra-low brightness signals and stray light interference are effectively separated, 0.01 cd / m < 2 >-level high-precision detection is realized, the detection efficiency is improved by more than 7 times, and the misjudgment rate is significantly reduced. The problems of missing detection of a novel display technology and the yield of an automatic production line are solved, and an active coding-time sequence calibration-cross-domain cooperation framework has remarkable innovativeness and industrial value.

Provided is a method for inspecting a light-transmissive laminate, said method being capable of detecting foreign substances that are very small as compared with the prior art. This method for inspecting a light-transmissive laminate detects 8-50 m-sized defects in a light-transmissive laminate by performing a transmission inspection in a state in which the light-transmissive laminate is fixed in the air one by one. For example, the defect detection includes the steps of: creating an XY coordinate graph of a defect by aligning a focal point of an optical system having a predetermined magnification with a surface of a first main surface of a light-transmissive laminate and scanning the light-transmissive laminate with the optical system; a step for creating an XY coordinate map of the other defect by shifting the focal point of the optical system inward in the thickness direction from the surface of the first main surface of the light-transmissive laminate by a predetermined distance and scanning the light-transmissive laminate with the optical system; and integrating the created XY coordinate maps of the defects.

The invention relates to the technical field of industrial automation and machine vision, and discloses an automatic debugging calibration system and method. The method comprises the following steps: establishing standard parameters, recording hardware installation parameters and software process parameters of reference laser processing equipment, and establishing a standard parameter library; preparing to-be-debugged equipment, and completing basic hardware installation and program import of the to-be-debugged equipment according to the standard parameter library; starting a VAC automatic debugging process, and sequentially executing automatic focusing confirmation, photographing position confirmation, light source intensity confirmation and pixel equivalent confirmation; coordinate system calibration of the laser and the camera is executed, and the coordinate transformation relation of the laser and the camera is established; static and dynamic repeatability verification is carried out, and precision and stability are evaluated; the optimized debugging parameters are stored, and parameters of other devices are migrated; through the automatic VAC process, manual debugging of several hours or even several days is shortened to the minute level, the machine difference caused by human factors is eliminated, and efficiency and consistency are greatly improved.

Method for operating an EUV mirror system, in which heating radiation emitted by a radiation source (41) is directed onto an EUV mirror (M1-M6) using a heating device (29). A portion of the heating radiation (32) is coupled out. A sensor (39) records measured values ​​relating to the radiant power of the coupled-out portion (38) of the heating radiation (32). A first comparison is performed between an absolute value (47) of the measured radiant power and a first threshold value (44). A second comparison is performed between a rate of change (48) of the measured radiant power and a second threshold value (46). The first comparison and the second comparison are evaluated in order to determine an error in the heating device (29). The invention also relates to an EUV mirror system and a microlithographic projection exposure system.

The invention relates to a grating detection method and equipment, and the method comprises the steps: controlling a first movement mechanism to move under the condition that a light source device emits incident light to a first to-be-detected region of a to-be-detected grating on an optical waveguide, and driving a bearing platform for placing the optical waveguide to move in a first direction and rotate around the first direction, the first direction is perpendicular to the plane, where the optical waveguide is placed, of the bearing table until the intensity of diffracted light, received by the detection device, of the first to-be-detected area meets the preset requirement; the detection device is controlled to be aligned with the first to-be-detected area for scanning, and scanning data corresponding to the diffraction light of the first to-be-detected area are obtained; obtaining a diffraction pattern according to the scanning data corresponding to the diffraction light of the first to-be-detected area; under the condition that a specific diffraction bright band appears in the diffraction pattern of the diffraction light of the first to-be-detected area, it is determined that manufacturing defects appear in the first to-be-detected area, and distribution of the specific diffraction bright band is different from distribution of diffraction bright bands in the diffraction pattern when the to-be-detected grating does not have the manufacturing defects.

An electro-optical device capable of identifying a target in the time series of the images so as to measure motion of a civil structure, such as a bridge, in response to forces (such as the weight of a vehicle traversing the bridge).

The utility model discloses an optical filter detection tool, which comprises a bottom plate, two vertical rods fixed at the top of the bottom plate, a cross beam fixed between the two vertical rods, a movable base plate arranged on the front surface of the cross beam, and a high-definition identification camera arranged on the surface of the movable base plate, the objective table is fixed to the top of the bottom plate and located under the cross beam, the objective groove is formed in the top face of the objective table, the carrier plate is placed in the objective groove, and a plurality of optical filters are placed at the top of the carrier plate; the limiting mechanisms are arranged on the two sides of the objective table; according to the utility model, the optical filter detection tool in the prior art is improved and optimized, and on the basis of the original structure, the limiting mechanisms are designed on the two sides of the objective table, so that the carrier plate placed in the objective groove can be effectively pressed and limited, the stability in the subsequent detection process is ensured, the detection effect is ensured, and the detection efficiency is improved. Moreover, the limiting mechanism is easy to operate, and facilitates the taking and placing of the carrier plate after the detection of an operator.

An inspection apparatus includes: a stage on which a display substrate having a plurality of cell regions and a boundary region adjacent to the plurality of cell regions is seated and a plurality of photographing units which photograph the display substrate. The plurality of photographing units may include a first photographing unit which photographs a first photographing region of the display substrate and a second photographing unit which photographs a second photographing region adjacent to the first photographing region of the display substrate, the first photographing unit is capable of independently adjusting the first photographing region and the second photographing units is capable of independently adjusting the second photographing region, and a boundary of the first photographing region and a boundary of the second photographing region overlap the boundary region in a plan view.

The invention discloses full-automatic dial plate pointer press-fitting equipment and method, and relates to the technical field of pointer press-fitting. The full-automatic dial plate pointer press-fitting equipment comprises a conveyor and a box body, the conveyor comprises a conveying belt, a plurality of positioning molds are arranged on the conveying belt, a first material disc and a second material disc are arranged in the box body, a first mechanical arm and a second mechanical arm are arranged in the box body, a pneumatic suction cup is arranged at the tail end of the first mechanical arm, and a second suction cup is arranged at the tail end of the second mechanical arm. The tail end of the second mechanical arm is fixedly connected with a mounting plate, and a plurality of press fitting modules are arranged on the mounting plate and used for press fitting of the pointer body. According to the full-automatic dial plate pointer press-fitting equipment and method, assembly line automatic press-fitting is adopted, the press-fitting efficiency can be improved, the extrusion force during pointer press-fitting can be controlled, after press-fitting is completed, the tightness of the pointer can be automatically detected, and the press-fitting efficiency and quality are guaranteed.

The invention relates to the technical field of vehicle-mounted screens, in particular to a screen rotating shaft torque anomaly detection method, device and equipment and a storage medium. Stress data of rotating shafts on the two sides of a vehicle-mounted screen and phase data of a driving motor are obtained, the torque deviation on the two sides and the change trend of the torque deviation are determined, and the torque anomaly is detected according to the change trend and the accumulated deviation total amount. And determining a grading result of the torque deviation of the two sides of the rotating shaft, and activating emergency retracement control when the stress overload risk is triggered. And calculating a motor phase compensation amount based on a deviation grading result and calibrating a motor phase to realize rotating shaft torque balance adjustment. According to the scheme, the torque deviation and the change trend are accurately quantified through stress distribution data and multi-dimensional analysis, deviation grading is achieved, the phase of the motor is dynamically adjusted according to the grading result, mechanical aging and load change in long-term use are adapted through historical compensation records and amplitude limiting intervals, the limitation of a traditional method is effectively solved, and the reliability of the motor is improved. The service life of the rotating shaft is prolonged and the use experience of the vehicle-mounted screen is optimized.

The invention belongs to the technical field of optical precision control, and particularly relates to an automatic calibration system and method for a fast steering mirror sensor, and the calibration method comprises the following steps: S1, carrying out the initialization configuration; s2, generating and sending an instruction sequence; s3, data storage: storing the angle data, fed back by the autocollimator, of the fast steering mirror; s4, dynamic calibration parameters are generated through data segmentation and data fitting; S5, calibration output is carried out; and S6, performing real-time compensation. The calibration system comprises an autocollimator, an upper computer and a fast reflecting mirror controller, a step angle instruction is automatically generated and sent through the upper computer, feedback data of the autocollimator is collected in real time, and first-order or second-order fitting is selected based on data segmentation and model selection to generate dynamic calibration parameters, so that the calibration accuracy of the fast reflecting mirror is improved. Global fitting is replaced by multi-interval independent linear fitting, the characteristic that nonlinearity of the sensor changes along with the angle is adapted, and the compensation precision is improved.

The invention relates to the technical field of optical measurement, and discloses a biaxial galvanometer error calibration method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a camera internal reference containing an internal reference matrix and a distortion coefficient through a calibration board; establishing an ideal geometric transformation model of the biaxial galvanometer, and defining a first galvanometer transformation matrix determined by the rotation angle of the first galvanometer and the first distance and a second galvanometer transformation matrix determined by the rotation angle of the second galvanometer and the second distance; installing error parameters are introduced, and a complete coordinate transformation model used for describing a complete light path transformation relation from an actual camera coordinate system to a final imaging coordinate system is formed; calibration data are collected, galvanometer system parameters and installation error parameters are optimized based on re-projection errors, re-projection residual errors are constructed, the re-projection residual errors are minimized through a nonlinear optimization algorithm, and optimal parameters are obtained. The installation error can be accurately calibrated and effectively compensated.

The invention discloses a test method and device based on vehicle-in-the-loop, electronic equipment and a storage medium. The method is realized by a test system based on vehicle-in-the-loop, and the system comprises a scene simulation platform and a vehicle platform. The method comprises the following steps: constructing a traffic simulation scene by adopting a scene simulation platform, and obtaining virtual perception information; sending the virtual perception information to a vehicle platform for processing to obtain virtual scene information, and displaying the virtual scene information on a front windshield of the tested vehicle; and the tested vehicle is controlled according to the virtual scene information on the front windshield of the tested vehicle, and the pose information of the tested vehicle is collected and fed back to the scene simulation platform. By adopting the technical scheme of the embodiment of the invention, the tested vehicle in-the-loop test system is constructed to test the head-up display, and the vehicle head-up display function is comprehensively and accurately tested and verified in combination with the real running state of the tested vehicle and the simulated traffic simulation scene.

The invention discloses an optical chip test assembly. The optical chip test assembly comprises a substrate and an optical chip fixed on the substrate, the bearing platform is arranged on the substrate; the metal cover plate covers the optical chip; when a test is carried out, the pressure-bearing table and the metal cover plate bear pressure together, so that the substrate pushes the ejector pin on the PCB test board back, and the substrate is electrically connected with the PCB test board. According to the invention, the pressure bearing platform is arranged on the substrate and is used for bearing the downward pressure, so that the optical chip is protected under the condition of ensuring the successful electric connection with the PCB test board. Meanwhile, the optical chip is also provided with the metal cover plate, and when the optical chip is pressed, the metal cover plate bears pressure at the same time, thereby solving the problem of non-uniform stress.

The utility model discloses an optical module detection system. The optical module detection system comprises a rack, a to-be-detected material loading module, a non-defective product unloading module, an NG product unloading module, a robot loading and unloading module, a lower visual code scanning module, an end detection loading and unloading module, a plugging cleaning module, a high and low temperature tester, an end detector and a test cabinet, through cooperation of the robot loading and unloading module, the to-be-tested material loading module, the non-defective product unloading module, the NG product unloading module, the lower visual code scanning module, the end inspection loading and unloading module, the plugging cleaning module and the high and low temperature tester, efficient transfer of optical modules among the modules is realized, and automatic loading and unloading of the optical modules and automatic plugging of optical fiber heads can be realized. The device is simple in structure, saves time and labor, effectively improves the detection efficiency of the optical module, is controllable in plugging force in the detection process, is high in safety coefficient, and reduces the damage risk of products and equipment.

The invention relates to the technical field of display screen detection equipment. The invention discloses a computer display screen strength testing device. A mounting plate is horizontally arranged at the bottom of a mounting seat; the device further comprises a sequential feeding device, the top of the mounting base is provided with the sequential feeding device used for feeding and discharging a plurality of display screens so as to facilitate detection work, the top of the mounting plate is provided with an impact testing device used for testing the strength of the display screens, and one side of the top of the mounting plate is provided with an intermittent transmission device. A locking device is arranged on one side of the transmission ratio adjusting device, and a linkage device is arranged on the transmission ratio adjusting device. According to the invention, two detection modes are realized, one mode is that the impact speed of the test piece is gradually increased under the condition that the size of the impact contact surface of the test piece and the display screen is not changed, and the other mode is that the impact contact area of the test piece and the display screen is gradually reduced under the condition that the impact speed of the test is not changed, so that how many times of impact can be borne by the display screen can be observed; therefore, the effect of rich and diversified detection results is presented.

The invention discloses a method and equipment for detecting a getter of a ring laser based on machine vision, and belongs to the technical field of laser gyroscope detection. According to the method, the thin film image of the getter is collected, the consumption condition of the getter is recognized by combining the color fading property of the getter after the getter reacts with the impurity gas, meanwhile, the getter parameter and the activation parameter of the ring laser are calculated according to the working condition data of the ring laser during standing and working, and the residual gas capacity of the getter is predicted based on the activation parameter. And combining the suction parameters to fit a suction characteristic function of the ring laser, and further predicting the remaining working time of the getter. According to the method, products with unqualified getter allowance can be effectively screened out, and the application reliability of the ring laser in the fields of aviation, spaceflight and the like is improved.