82 results about "Visual test" patented technology

The present application belongs to the technical field of geotechnical engineering and indoor test, and provides a visual test device and method for interaction between high-pressure rotary jet flow and soft soil, which comprises a detachable model box, a jet medium simulation system, a high-pressure rotary jet flow generation system, an overburden pressure simulation system, a data acquisition system and a tracing system.The test device has the advantages of high visual degree, detachability, easy assembly and easy production.The jet medium simulation system has significant shear thinning characteristics, and has a high degree of reduction of the non-Newtonian fluid properties of cement slurry, which not only overcomes the problem of easy blockage of the pipeline, but also avoids distortion defects.The trajectory of the fluorescent powder particles in the jet medium simulation system can be captured by a high-speed camera under the irradiation of the pulsating laser beam generated by the pulsating laser, so as to accurately reproduce the flow field information of the high-pressure rotary jet flow in the soft soil.

A system may include a headset device comprising a display screen and an adaptive map perimetry algorithm that is configured to access or implement a normative database or model. The system may implement a VF test adapted to fit an area of the display screen based on values in the normative database or model and is rendered as a same or similar visualization compared to one or more different headset devices having different display screens having different respective shapes, formats, sizes, and / or resolutions. The system may receive visual test data indicating a visual field of the user and detect one or more initial test locations. The one or more initial test locations define one or more healthy clusters indicative of an absence of scatoma and one or more damaged clusters indicative of scotoma. The system may generate a spatial mapping identifying locations of the one or more damaged clusters.

There is provided a method for determining type of cataract by an electronic device. The method includes performing vision focus calibration for a user, determining central and peripheral regions of interest on a display of the electronic device based on fixated vision, performing a primary test for obtaining scores for the central and peripheral regions of interest, selecting at least one vision test mode based on the obtained score, and adapting at least one visual display parameter based on the obtained score and the selected at least one vision test mode. The method also includes determining a type of cataract from the selected at least one vision test mode, determining severity of the determined type of cataract, and providing the determined type of cataract and the determined severity with one or more recommendations to the user.

A virtual vision test can be performed to evaluate response time in detecting subtle visual changes under varying light conditions in a virtual reality (VR) environment. The test can be conducted using an electronic device with a head-mounted display (HMD) and a camera. The device can generate and render a VR user interface in a photorealistic virtual environment, simulating dynamic lighting scenarios. The device can continuously track eye movements in response to visual stimuli presented in these scenarios. The system can then evaluate the detection of subtle visual changes based on the tracked eye movements, and provide a comprehensive assessment of visual acuity and responsiveness under different lighting conditions.

A vision test can be performed based on real-time audio instructions in a virtual environment. An electronic device, such as a head-mounted display, can execute a visual assessment application, including generating a user interface corresponding to a three-dimensional virtual environment. The electronic device can display a plurality of visual stimuli in the user interface, and each visual stimulus can be displayed in duplication with respect to a respective target depth. The electronic device can receive one or more user responses, and each user response can indicate whether a user perceives a corresponding visual stimulus in duplication at the respective target depth. Based on the one or more user responses, the electronic device can determine a depth perception profile of the user, and the depth perception profile can include a plurality of depth perception levels corresponding to a plurality of target depths.

The application discloses a kind of rock fissure low temperature two-phase percolation visual test system and test method, system includes low temperature control system, data acquisition system, high-definition video image acquisition and transmission system, gas transmission system, transparent fissure sample, gas drainage pipe, telescopic stand, parallel light source;The transparent fissure sample is placed on parallel light source in low temperature control box, both ends are equipped with steady flow tank, two gas drainage pipes are respectively installed in the lower end of two end steady flow tank, and pressure sensor for measuring the gas parameters in each gas drainage pipe is arranged in each gas drainage pipe.The low temperature control system of the application keeps the transparent fissure sample and fluid in low temperature state, and different low temperature environments are set during the test to carry out fissure low temperature two-phase percolation test.The application has simple structure and is easy to operate;The displacement of transparent fissure sample can be observed in real time;The displacement law of the sample under low temperature and different flow conditions can be continuously measured and studied.

A system for displaying visual content, comprising at least one output device, and at least one controller, and at least one input device, wherein the visual content comprises features comprising a color scheme and / or at least one color group, the output device is configured to display the visual content, the controller is configured to generate a first visual test comprising at least one first test image, and to allow displaying the visual content on the output device if a user correctly identifies an object in the first test image, the input device is configured to receive input by the user to identify the object in the first test image. In some examples, the first test image is generated using features and / or expected features of the visual content.

To perform a visual acuity test with high accuracy so as to be easily understood even by a child or the like.SOLUTION: A visual acuity examination display tool 20 includes a display tool body 21 and a visual acuity examination mark 100 displayed on the display tool body 21, and the visual acuity examination mark 100 includes a mark part 101 which can be recognized by an examination object person including a child, and a notch part 105 which is formed in a part of the mark part 101 and indicates a minimum separation threshold.SELECTED DRAWING: Figure 1

Some systems and methods disclosed herein facilitate calibration of a head-mounted display while a visual test is performed. One mechanism of facilitating calibration involves detecting, as a visual test is being performed, that the user's eyes moved in the direction of a displayed stimulus but have not stopped at the point of where the stimulus is displayed, and instead stopped at a different point (e.g., a threshold distance away from the stimulus). Based on that detection, the system may determine that the user has seen the stimulus and that calibration of the sensors is needed. The system may then record that the user has seen the stimulus and perform sensor calibration before displaying the next stimulus.

A patient's visual health can be evaluated via a virtual reality (VR) system, which can include a VR headset in electronic communication with a computing device. The computing device can cause a phenomenon (such as a visual test or an image) to be displayed on the screens of the VR headset. Using varying combinations of sensors, cameras, probes, and microphones, the VR headset collects data about the patient as she perceives and responds to the phenomenon. Optionally, the computing device can alter the phenomenon and analyze the patient's perception and responses to evaluate the patient for macular degeneration. Optionally, the computing device can alter the phenomenon based on the patient's perception and responses.

The invention discloses a shield tunneling whole process visualization test model, which belongs to the technical field of shield simulation tests and comprises a model box body, a shield simulation system, a propulsion control system, an acquisition system and an intelligent electric control system. The model box body is used for loading transparent soil, three surfaces are provided with transparent toughened glass, and the top is provided with a sliding cover plate; the shield simulation system comprises a pipe joint, a shield shell, a cutterhead and a sealing bin, and has the functions of reduction cutting, deslagging and grouting; the propelling system provides fine propelling speed and stable driving force; the acquisition system synchronously acquires the internal displacement of the soil body and the soil pressure data of the sealing bin; and the intelligent electric control system realizes parameter setting, real-time monitoring and cooperative control. The model solves the problems that an existing model is incomplete in observation, low in control precision and poor in scene adaptability, multiple scenes such as tunneling excavation and excavation face instability can be simulated, and a precise test carrier is provided for shield construction mechanism research and risk prevention and control.

In some embodiments, a wearable device performs a visual test that includes simultaneously presenting a first eye stimulus for a first eye of a user of the device and a second eye stimulus for a second eye of the user, where the first eye stimulus has a display characteristic level greater than a display characteristic level of the second eye stimulus. The display characteristic level of the first eye stimulus and second eye stimulus are sequentially increased until feedback information indicates detection of at least one of the first eye stimulus or the second eye stimulus by the user. In response to the feedback information indicating such detection by the user, the other stimulus is presented at one or more sequentially increasing display characteristic levels until the feedback information indicates detection of the other stimulus. Ocular anomaly information of the user is generated based on the feedback information.

This invention relates to the field of fluid mechanics and transient process analysis of hydraulic systems, and discloses a method for determining the occurrence boundary and risk level of liquid column separation. The method utilizes a visual test bench to conduct multiple experiments under different combinations of test parameters, collecting data and simultaneously recording the liquid column separation state. Based on Buckingham's π theorem, dimensional analysis is used to construct multiple independent dimensionless parameter sets from the test parameter combinations. These are used as input features, with the separation state as the target variable. A machine learning algorithm is introduced for multiple batch training to calculate importance scores, selecting the dominant dimensionless parameter with the highest and most stable score. Subsequently, regression analysis is used to fit the data boundary, solving for the intersection point and outputting the critical equilibrium point as a quantitative benchmark for the occurrence boundary. After confirming separation, high-scoring dimensionless parameters are selected to construct composite judgment parameters, which are compared with preset thresholds to classify the risk level. This invention can accurately define the critical equilibrium point of cavitation occurrence and quantitatively assess its risk severity.

A vision test can be aided with controller actuation in a virtual environment. An electronic device, such as a head-mounted display, can establish a communication link between the electronic device and a controller held by a user associated with the electronic device. A user application can be executed to enable the vision test. The electronic device can display a VR user interface based on a driver license issuing requirement to create a 3D virtual environment, and the VR user interface can include a moving traffic scene on which one or more visual stimuli are displayed. The electronic device can drive one or more actuators of a controller in synchronization with displaying the VR user interface.

A virtual eye test can be conducted to evaluate night vision and glare sensitivity in a virtual reality (VR) environment. The test can be conducted using an electronic device that includes a head-mounted display (HMD) and a camera. The electronic device can generate a VR user interface corresponding to a photorealistic virtual environment and render the VR user interface on the HMD. The electronic device can simulate one or more dynamic lighting scenarios and while simulating these scenarios, in real time, continuously track eye movements and response times to visual stimuli using the camera. The device can then evaluate user response based on the eye movements and response times for testing night vision and glare sensitivity.

The invention relates to the technical field of out-of-tube boiling heat exchange, and discloses a visual bias type multi-type out-of-tube normal-temperature boiling heat exchange experiment system which comprises a shell-and-tube heat exchanger body, an evaporative condenser, a magnetic transmission gear pump, a liquid level meter, a metal float flowmeter, a data collector, a constant-temperature water tank, a turbine flowmeter, a low-temperature constant-temperature bath and a nitrogen cylinder. According to the system, the boiling phenomenon outside the heat exchange copper pipe in the heat exchanger can be observed and the heat exchange coefficients of the heat exchange pipes in different shapes can be measured through the visual offset type outside-pipe normal-temperature boiling heat exchange experiment system and the effective connection of the heat exchange copper pipe, the shell, the visual window and the light source collection port; the system is simple in structure and convenient to operate, can test related operation parameters of each component in the refrigeration process, realizes the characteristic of multiple functions of one set of system, adopts double-layer laminated transparent toughened glass as a light-transmitting material, has good sealing performance and high pressure resistance, and can realize visual test of boiling heat exchange outside a refrigerant pipe.

The present application relates to the field of geotechnical simulation test, disclose a kind of loose soil particle dynamic migration test method based on solid-liquid gradual phase change, the test device used includes pressurized water supply system, test box system and water pressure monitoring system, test box system includes visual test box, the bottom of box has the water inlet of porous water-permeable plate, variable cross-section size ice column is placed on the plate, loose soil sample is layered and filled around ice column according to set density, and different layer height position of sample is divided into pressure measuring hole, overflow port is arranged above the position of loose soil sample surface;Water pressure monitoring system is used to measure the water pressure parameter at each pressure measuring hole;When testing, pressurized water supply system supplies water to test box system through the water inlet, the migration of loose soil sample is observed, the dynamic evolution process simulation of loose soil sample piping is carried out, and the water pressure change of different parts of loose soil sample in the test process is recorded, which can be used to intuitively reflect and study the piping instability mechanism of loose soil.

1. The name of the design product: separate visual testing device. 2. The use of the design product: for code reader high-speed decoding ability test and visual detection algorithm ability test. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This specification provides an embodiment of a near-eye display device and its calibration method, apparatus, and storage medium. The near-eye display device includes two display modules corresponding one-to-one with a user's two eyes. The method includes: obtaining strabismus data and fusion range corresponding to the first eye of the target user through an interactive visual test while the near-eye display device is being worn by a target user; determining a personalized visual comfort zone corresponding to the first eye based on the fusion range and according to a preset visual comfort rule; and adjusting the module configuration parameters of the near-eye display device based on the strabismus data and the personalized visual comfort zone so that the perceived eye position of the first eye falls within the personalized visual comfort zone.

The utility model discloses plastic part detection equipment with a Type-D interface, and the plastic part detection equipment comprises vibrators, a visual test bottom, a vibrator product discharge channel, a transparent glass disc, a CCD test module, a probe, an air blowing and discharging part, a storage mechanism and a rotary motor, and the two vibrators convey products to the inner ring and the outer ring of the transparent glass disc through the product discharge channel at the same time for testing; and the tested products are conveyed to the defective product storage mechanism and the non-defective product storage mechanism for classified output. According to the invention, the defects of missing detection of a manual detection mode and confusion of different types of plastic part products are overcome, the stable detection effect of the plastic part of the Type-D interface is ensured, the detection efficiency is improved, the yield of a production line is further improved, the production operation cost can be reduced, and the goal of lean production is achieved. Under the condition that the detection quality is guaranteed, the labor cost is reduced, the operation time is short, and the operation efficiency is greatly improved.

The application provides a text interaction traffic robustness automatic testing method and device, the method comprises the following steps: based on the test target, different scenes are configured, different scene configurations are combined to obtain test cases covering different scenes, multiple parameters of the test cases are configured, the test cases are grouped and prioritized based on the test requirements, the configuration parameters required for testing are processed to obtain configuration parameters that meet the parameter receiving requirements of the large model firewall system, the configuration parameters are sent to the large model firewall system, the large model firewall system is preconfigured based on the configuration parameters, simulated test traffic is sent to the large model firewall system based on the test case parameters for traffic detection, the traffic detection results returned by the large model firewall system are received, the target test data of the whole test process is collected and processed, the core evaluation indexes are calculated based on the processed target test data, and the visual test report is generated based on the core evaluation indexes.

The utility model belongs to transformer production test equipment technical field discloses a kind of automatic testing, screening and tray integration equipment, including case, workstation, material taking mechanism, pressure resistance test mechanism, transfer storage jig, interlayer test mechanism, comprehensive test mechanism, visual test mechanism, defective product collection mechanism, tray mechanism and PLC controller.Material taking mechanism is used to transfer transformer material to test mechanism;Each test mechanism carries out different project test to transformer material;Transfer storage jig is used to temporarily store the material that passes test;Defective product collection mechanism is used to collect the material that fails test;Tray mechanism is used to arrange tray to the material that passes test;PLC controller is used to control the collaborative work of each mechanism.The utility model realizes the full automation operation of transformer test procedure, reduces manual intervention, improves test accuracy and work efficiency, reduces defective rate simultaneously, guarantees the consistency and reliability of product quality.

The invention provides an automatic screen recording testing method and device, a storage medium and electronic equipment, and is applied to the technical field of automatic testing. When the test task is executed, the video stream of the application interface and the corresponding view structure tree change sequence are synchronously collected, the change of the view structure tree is monitored, and the video stream and the view tree change sequence are cut into a plurality of time-associated video clips and view tree clips according to the stable state of the interface; according to the method, the double-track data are matched to form a plurality of double-track data pairs, and the double-track data pairs are subjected to behavior analysis to generate a step-by-step visual test case video, so that accurate backtracking of a test process is realized, and the credibility of a test result and the problem positioning efficiency are effectively improved.

The utility model discloses a portable handheld visual tester for network optimization, which comprises a network detector and a handheld mechanism, an adjustable handle is arranged on the upper side of the network detector; the handheld mechanism comprises holding grooves, anti-skid protrusions, nylon belts, stop blocks and finger grooves, the holding grooves are formed in the left side and the right side of the network detector respectively, the anti-skid protrusions which are evenly distributed are fixedly connected to the interiors of the holding grooves, the nylon belts which are symmetrically distributed up and down are fixedly connected to the left surface and the right surface of the network detector respectively, and the finger grooves are formed in the stop blocks. A baffle block is fixedly connected between every two adjacent nylon belts on the same side, finger grooves are formed in the left side and the right side of the rear surface of the network detector, and a first fixing rod is fixedly connected to the lower side of the rear surface of the network detector. And more labor is saved during holding, and meanwhile falling is not prone to occurring.

The application discloses a kind of metro tunnel mine method excavation visual test system, comprising: installation in the combined model box of optical platform: wherein with visual filling material to simulate the surrounding rock of subway tunnel;Tunnel excavation module utilizes isolation material to divide internal interface into multiple cavern areas, to form the tunnel model of predetermined plan excavation, each cavern area is filled with visible, meltable filling, and is buried with conductive hot melting device to simulate the excavation of tunnel;Support system is the anchor rod simulation device of pre-setting in surrounding rock material;Loading device includes stress loading unit for applying load to simulate the original stress of tunnel around and pressure sensor for monitoring load size;Laser instrument is used to emit laser beam to generate speckle field;Imaging device is used to take speckle field image;There are image recognition and interpretation module (special image analysis tool GEO-PIV based on matlab development). The application can realize the whole process visualization of tunnel any part excavation.

The invention discloses a buried pipeline visual test system and method for simulating a differential load effect, and belongs to the technical field of geotechnical engineering. The soil body model is filled in the test soil body container, and a test pipeline model is buried in the soil body model; the difference loading device is fixed above the upper sealing cover of the test soil body container, the difference loading device comprises a first servo electric cylinder and a second servo electric cylinder, and loading rods of the first servo electric cylinder and the second servo electric cylinder penetrate through a preset hole channel of the upper sealing cover to act on the lower soil body and the test pipeline model; the first servo electric cylinder and the second servo electric cylinder are different in specification, and the loading rate is independent and controllable; and the monitoring and data acquisition system comprises a stress sensor, a strain sensor and a pore water pressure sensor which are buried in the soil body model, and a pressure sensor and a displacement sensor which are arranged around the test pipeline model. According to the invention, the actual stress condition of the buried pipeline in the actual working condition can be better simulated.

The invention discloses a visual critical heat flux density test method and device, and belongs to the field of thermal hydraulic tests. The visual critical heat flux density test method comprises the following steps: providing a CHF test device with a transparent heater; synchronously acquiring infrared signal distribution data and bubble distribution image data of the transparent heater; establishing a heat conduction / radiation heat transfer coupling model of the transparent heater, and calculating temperature distribution data of the transparent heating film according to the infrared signal distribution data; and combining the surface temperature distribution data of the transparent heating film with the bubble distribution image data, and determining the position of the boiling phenomenon in the test process and the temperature of the transparent heating film at the corresponding moment. According to the method, the accuracy of the CHF visualization test can be effectively improved.

The invention discloses a slurry pressure fracturing CT (Computed Tomography) visual test method, which comprises the following steps: taking zirconia particles as speckles, then mixing the zirconia particles with feldspar powder, preparing a hollow cylindrical sample by adopting an inclined layered deposition-selective sintering method, and vertically and upwards arranging fracturing holes at equal intervals in the center position of the thickness of the side wall of the sample; a hollow cylinder sample is placed in a pressure-torsion test system compatible with CT, and different principal stress states are realized by controlling changes of axial pressure, torque and internal and external peripheral pressure; cement paste is injected into the open hole sections of the fracturing holes through a paste pressure controller for porous synergistic fracturing; cT scanning is conducted in the fracturing process and before and after fracturing; based on image reconstruction, crack propagation, a convergence rule, a three-dimensional shape, slurry migration and solid particle accumulation and blockage characteristics are analyzed, and a three-dimensional deformation field of the sample is obtained by using a digital volume correlation method. According to the invention, multi-field visualization of the whole grouting fracturing process is realized.

The invention provides a T-Box law and regulation data automatic testing system and method based on a configurable rule engine. The system comprises a vehicle type configuration management module, a test rule base and engine module, a test case automatic generation and execution engine module, a vehicle network and environment simulation module, a T-Box communication and data acquisition module, a data analysis and compliance verification module and a test report generation module. The method comprises the following sub-steps: S1, configuring a target vehicle model; s2, configuring a test rule set; s3, generating a test case; s4, executing the test case and data acquisition; s5, real-time compliance verification is carried out, and whether re-measurement is needed or not is judged; s6, generating a visual test report and recording a test log; according to the method, the ECU node is processed through the preset template and the component, the target vehicle type configuration scheme is generated, and repeated development is reduced; parameter adjustment is carried out on the general rule to adapt to different vehicle types, rewriting is not needed, and the development and maintenance workload is reduced.

The present application belongs to the technical field of impeller machine test measurement, and discloses a visual test system and method for an inlet passage of a heavy-duty gas turbine, wherein the system comprises an inlet fan, a pressure stabilizing chamber, an outlet fan, a flow meter, a particle image velocimetry component, a probe measurement component and an inlet passage model test piece; the particle image velocimetry component is used to obtain two-dimensional velocity data of gas at the outlet of the inlet passage model test piece; and the probe measurement component is used to determine the circumferential gas flow field parameter distribution at the outlet of the inlet passage model test piece according to the obtained gas velocity information and pressure information at different circumferential positions of the outlet of the inlet passage model test piece. The experimental system of the present application combines the particle image velocimetry component with the probe measurement component, and uses the probe experimental results obtained by the probe measurement component to check the experimental results of the particle image velocimetry component, thereby improving the accuracy of measurement.