115 results about "Test distance" patented technology

The invention relates to the technical field of Teflon high-temperature cloth production, in particular to a detection device for Teflon high-temperature cloth production. A Teflon high-temperature cloth conveying structure for continuously conveying the Teflon high-temperature cloth is assembled on the machine body; the device has a flexible detection mode to adapt to multiple requirements, a Teflon high-temperature cloth detection structure flexibly switches a sealing pipe passage through an electromagnetic valve, medium conveying is accurately regulated and controlled according to the requirements of detection items, rapid conversion of waterproof, windproof and high-temperature-resistant detection is achieved, the same device efficiently completes multi-performance detection, stretching puncture detection is accurate and effective, and the detection efficiency is improved. The tensile test simulates real working conditions to comprehensively evaluate performance: the bidirectional screw rod is linked with the detection turntable to drive the tensile test assembly to perform multi-dimensional tensile on the high-temperature cloth. The two-way screw rod accurately regulates and controls the test distance to simulate different stress distributions, detects the annular stretching of the turntable to reproduce the stress state of a complex use scene, excites the mechanical response of the material in an omnibearing manner, accurately obtains the tensile property parameters, and deeply evaluates the applicability and durability of the material.

The invention relates to the technical field of artificial intelligence, and discloses an efficient software testing method and system based on artificial intelligence. Generating test points one by one according to code segments of code data in the demand code data set, and generating a test path according to the test points; generating a test case of the code data according to the code features and the test path, calculating a test distance between the test case and a historical test case, and generating a test scheduling sequence according to the test distance; performing synchronous testing on the demand code data set according to the test scheduling case, and extracting defect code data in the demand code data set through a test defect report in the test result set; and generating a test update case of the defect code data according to the test case, generating a test update report of the defect code data through the test update case, and generating a test report of the target software according to the test result set and the test update report. According to the invention, the software testing efficiency can be improved.

The invention relates to the technical field of sensors, and discloses an automatic testing method and device for an inductance proximity sensor, electronic equipment and a storage medium. The method comprises the following steps: acquiring test configuration data of a tested inductance proximity sensor, and analyzing the test configuration data to obtain a first test distance; moving the tested inductance proximity sensor to a first test position through the test clamp, wherein the distance between the tested inductance proximity sensor and the target at the first test position is a first test distance; acquiring inductance change data and sensor output data of the detected inductance proximity sensor in the moving process; sending the first test distance, the inductance change data and the sensor output data as first test result data to a target machine learning model; and performing correction and optimization processing on the first test result data through the target machine learning model to obtain target test result data corresponding to the tested inductance proximity sensor. Through the method, the test efficiency is improved, and the test error is reduced.

According to the scanning device and the tracking type three-dimensional scanning equipment, the scanning device comprises a frame and a plurality of mark islands, the mark islands are arranged on the periphery of the frame and connected with the frame, at least two mark points in each mark island can be recognized by a tracking device at the same time, the diameter of each mark point is set to be D, and D is larger than or equal to 10 mm and larger than or equal to 25 mm. When the scanning device is applied to the tracking type three-dimensional scanning equipment and works, the at least two marking points on the marking island are easier to identify by a tracking device, so that on one hand, the scanning test distance of the scanning device during working can be increased, and the scanning test space can be expanded; and on the other hand, the scanning precision of the scanning device during working can be improved.

The present application relates to the technical field of vehicle control, in particular to a position identification method and apparatus for a digital key, and a storage medium. The method comprises: acquiring an anchor point distance between every two adjacent anchor points among four anchor points on a vehicle, a test distance between each anchor point and a digital key, and a boundary distance between each anchor point and an inner and outer boundary of a vehicle body, wherein each anchor point is used for determining the test distance on the basis of a distance measurement signal between the anchor point and the digital key, the four anchor points on the vehicle form an anchor point plane, and the boundary distance is the distance between each anchor point and the nearest inner and outer boundary of the vehicle body; determining a projection distance of the test distance on the anchor point plane on the basis of the test distance and the anchor point distance; and determining a final position of the digital key on the basis of the projection distance, the anchor point distance and the boundary distance, wherein the final position is inside or outside the vehicle. The embodiments of the present application are used for solving the problem of the position identification of a digital key being inaccurate.

The invention discloses a radon gas detector test method and related equipment, and the method comprises the steps: obtaining equipment parameters of a tested radon gas detector, and determining the first test concentration of the tested radon gas detector according to the equipment parameters; determining the test distance of the radon gas detector to be tested according to the first test concentration, wherein the first test concentration is in negative correlation with the test distance; controlling the distance between the americium 241 radioactive source and the detected radon gas detector to meet the test distance, and controlling the americium 241 radioactive source to be turned on; acquiring a plurality of first test data acquired by the signal transceiving module from the radon gas detector to be tested during the starting period of the americium 241 radioactive source, wherein the first test data are electric signal data corresponding to alpha particles generated by the americium 241 radioactive source; and determining a test result of the tested radon gas detector according to the plurality of first test data. By adopting the method provided by the invention, the problem of high detection cost caused by a radon source in a traditional detection method is solved.

The invention discloses a near-field test method, which is characterized in that sampling points are arranged on a near-field plane, plane near-far field conversion is carried out according to field values of the sampling points, the sampling points are non-uniformly distributed, the distance between the sampling points is in positive correlation with the test distance of the sampling points, and the test distance is the distance between the positions of the sampling points and the original point of an area to be tested. The invention further discloses a near-field test system which uses the method and comprises a data processing system, a control system and a darkroom. The number of sampling points is reduced, and the problem that an existing testing method is high in cost is solved.

The utility model relates to a testing device for a head-mounted camera module. The testing device for the head-mounted camera module comprises a rotating platform, a white field testing module, an SFR testing module, a relay lens module and a dark field testing module. The rotating platform is provided with four stations, at least one station is provided with a camera module, the initial positions of the four stations are a feeding position, a white field testing position, an SFR testing position and a dark field testing position in sequence, and the rotating platform is controlled to rotate so that all the stations can rotate to the corresponding designated positions. And the white field test module corresponds to the white field test position in position and is used for carrying out white field test on the camera module. And the SFR test module corresponds to the SFR test position in position, is provided with a test graphic card of which the height can be adjusted along the vertical direction, and is used for carrying out SFR test on the camera module. And the relay lens module is matched with the SFR test module to adjust the test distance. And the dark field test module corresponds to the dark field test position in position and is used for performing dark field test on the camera module.

The invention aims to provide a dual-camera focusing and focus checking system based on a UVC mode, and the system achieves the automatic switching of an equivalent test distance between a main camera and an auxiliary camera through a cooperative control mechanism of an electric sliding rail type Chart platform and a teleconverter module. MTF threshold tables corresponding to different test stages are called according to different test stages of focusing, focus checking, final inspection and the like of the camera, so that the MTF values of the different test stages are compared; through adaptive focusing and focus checking of the double cameras based on the UVC mode, the cameras delivered to a user can work in an optimal use state.

The invention relates to the technical field of running intelligent testing, in particular to a running intelligent testing method, system and equipment based on multi-camera cooperation. According to the invention, identity verification is carried out through deep learning face recognition, and basic information is obtained; establishing an adaptive rule set including a test distance and a speed setting range by combining real-time environmental parameters; multi-camera cooperative acquisition is utilized, and space mapping is established by calibrating common coordinate points to realize track splicing; a neural network is adopted to analyze motion characteristics such as speed trend, acceleration distribution and attitude change, and track effectiveness is evaluated; and finally, generating a report containing test data and training suggestions. According to the invention, through combination of multi-camera cooperation and an adaptive rule, omnibearing monitoring is realized, the standard can be flexibly adjusted according to the environment and individual characteristics, and support is provided for scientific training.

The utility model discloses a portable foldable far-vision testing chart, which comprises a dial plate member, the dial plate member is provided with an inclined plane, and testing scales are arranged on the inclined plane; a supporting frame body is arranged above the dial piece, the bottom end of the supporting frame body is fixedly connected with the dial piece, the two sides of the top end of the supporting frame body are rotationally connected with a first reflection assembly and a second reflection assembly, a first reflection mirror is arranged in the first reflection assembly, and a second reflection mirror is arranged in the second reflection assembly; the first reflecting mirror is located between the dial plate piece and the second reflecting mirror and reflects the test scales on the dial plate piece to the second reflecting mirror, and the second reflecting mirror is located above the first reflecting mirror and reflects the test scales reflected to the second reflecting mirror to the eyes of a tested person. According to the utility model, the indoor space occupied by the test distance is effectively shortened; vision testing work can be carried out in a small indoor space, and the using effect of the visual chart is improved.

The invention discloses a contact and non-contact combined temperature rise data testing method, which relates to the field of temperature testing, and is characterized in that a contact temperature measurement result is corrected by using a temperature rise rate in non-contact temperature measurement according to contact and non-contact temperature measurement characteristics, and a non-contact temperature measurement result is corrected by using temperature rise data obtained by the contact temperature measurement. The influence of the thermal resistance between the test sensor and the tested object on the contact temperature measurement response rate and the influence of the test distance, the surface thermal emissivity of the tested object, smoke dust and the like on the non-contact temperature measurement precision are reduced, and a high-response accurate temperature test result is obtained.

The utility model provides a testing device and a testing system. The testing device comprises a track structure; the rotating structure comprises a base slidably connected with the track structure and a rotating assembly capable of rotating relative to the base, a supporting rod is fixedly connected to the center of the rotating assembly, and a rotating shaft assembly is rotatably connected to the top end of the supporting rod; the human body model sleeves the periphery of the supporting rod and can rotate relative to the base around a first rotating center along with the rotating assembly; the head model is fixedly connected with the rotating shaft assembly and can rotate relative to the supporting rod around the second rotating center along with the rotating shaft assembly; an image acquisition and recognition part is arranged on the rotating shaft assembly to recognize an image in front of the human body model and judge a test result. The testing device and the testing system can effectively and accurately complete testing distance changing, head turning and nodding actions so as to meet the testing requirements, are higher in accuracy, can automatically judge the testing result, greatly improve the testing efficiency and liberate manpower.

The utility model discloses a remote real vehicle test system for a nitrogen-oxygen sensor, which belongs to the technical field of sensor test and comprises a nitrogen-oxygen sensor test mechanism, an installation protection assembly, a server and a mobile terminal, and the nitrogen-oxygen sensor test mechanism is installed on a vehicle through the installation protection assembly. The nitrogen and oxygen sensor testing mechanism is in wireless connection with the server, the server is in wireless connection with the mobile terminal, all detection data are received through the signal conversion assembly and transmitted to the CAN bus-to-4G equipment, the CAN bus-to-4G equipment transmits CAN bus data to the server through a 4G network, and therefore remote monitoring is achieved; and the GPS positioning device converts the position information of the vehicle into a CAN bus format through an RS485 interface to a CAN bus, and finally sends the position information in a 4G signal form, so that the overall communication reliability of the system is improved, the test distance is increased, and more comprehensive data is provided.

The invention relates to the technical field of pressing equipment, and particularly discloses a protection device of a cubic press, which comprises a mounting shell mounted on the outer side of the cubic press, and a signal controller, a protection signal harness end and a connection harness group are mounted on one side of the mounting shell. The signal controller is in signal connection with a detection axial calibration assembly, a three-monitoring-point debugging mechanism and a self-locking signal response assembly through the protection signal wire harness end. According to the diameter of a crack generation area, the magnetoresistive sensors are driven by the driving motor to axially debug the positions around the regulation and control support, and the extension lengths of the magnetoresistive sensors are debugged by the extension mechanism according to the central point of the crack generation area as a symmetrical end point, so that the three groups of magnetoresistive sensors can adjust the positions of the magnetoresistive sensors even if the crack is not in a holding-up hammer central plane state. The center point of the crack can be reselected to set equilateral test distances among the three groups of magnetoresistive sensors, so that the stability of the output end of the magnetic field is ensured, and the damage state of the holding-up hammer is accurately confirmed.

The present invention addresses the problem of providing an optometric device that, when an optical member is set and a pseudo refractive power test is performed, prevents a decrease in test precision caused by changing the apparent size of a visual target presented at a far test distance position. An optometric device (1) comprises a reflector head (100) that has an optometric window (114) for observing a visual target M, a visual target presentation device (200) that presents a visual target M at a far test distance position, and a control unit (330) that controls the parts of the device. The reflector head (100) sets, at the position of the optometric window (114) which is disposed in front of an eye E being examined, a spherical lens that is used to simulatively present, as a near-distance visual target at a near test distance position, a visual target M which is presented at a far test distance position. The control unit (330) has a visual target rendering magnification alteration unit (336) that, when the spherical lens is set and a pseudo near-distance test is performed, changes the rendering magnification β of the visual target M displayed on the visual target presentation device (200) to a magnification that suppresses a change in the apparent size of the visual target M presented at the far test distance position.

In a test method for performing a cable magnetic flux leakage test for detecting defects, a test device (100) and a cable (200) are moved relative to each other in a longitudinal direction of the cable. In this case, by means of a magnetizing device (120) of the testing device, the part of the cable is magnetized segment by segment in such a way that the magnetizing field line in the cable is oriented substantially in the longitudinal direction of the cable. The circumference of the magnetized portion of the cable is scanned by means of a magnetic field sensitive probe (140) of a probe device (130) for detecting a leakage magnetic field due to a defect. The probe device has a plurality of magnetic field-sensitive probes (140) which are arranged offset from one another in the circumferential direction and are arranged at a test distance (142) from the surface of the material under test during the test. The electrical probe signals of these probes are evaluated for qualification of defects. Each probe of the probe arrangement is arranged in a movably arranged test shoe (150) having a sliding surface (146) for sliding on the circumferential surface of the cable, the probe (140) being arranged at a probe distance (145) relative to the sliding surface. In a first test configuration, the test shoe (150) is pressed onto the circumferential surface such that the sliding surface (146) is in contact with the circumferential surface and the probe is held at a limited first test distance from the surface of the material under test substantially corresponding to the probe distance.

A radiation magnetic moment test system of a magnetic dipole radiator comprises three orthogonal electromagnetic measurement sensors arranged at a test point, the electromagnetic measurement sensors obtain magnetic field components under rectangular coordinates of the test point, and a radiation magnetic moment measurement value of the magnetic dipole radiator is calculated according to the magnetic field components. According to the radiation magnetic moment test system of the magnetic dipole radiator in the technical scheme of the utility model, only the size and the test distance of the electromagnetic emission system where the magnetic dipole radiator is located need to be given, so that a single magnetic dipole emission antenna or a magnetic dipole radiator formed by a plurality of magnetic dipole emission antennas can be tested; the field intensity component is tested under the condition of any angle and any frequency, and an effective technical approach is provided for accurate, complete and standard radiation magnetic moment testing of various electromagnetic emission systems.

The invention provides a self-service vision tester and a use method thereof, and relates to the field of self-service vision testing. The self-service vision tester comprises a rocker device and an App client which are in communication connection. The rocker device is provided with four-direction rockers capable of being shifted upwards, downwards, leftwards and rightwards; and the App client is used for displaying an E letter of which the density-independent pixel size is matched with the test distance and the opening direction is random, and acquiring and storing the vision value of a single tester by combining the orientation of the four-way rocker and adopting a price guessing logical algorithm. The vision test can be automatically completed, the cost is low, the operation is convenient, and the interestingness of the vision test is also increased by the application of the four-way rocker; and meanwhile, a price guessing logical algorithm is introduced at the App client, so that the accuracy of a test result is ensured on one hand, and the test efficiency is greatly improved on the other hand. In addition, the provided App client also supports group testing, and the testing efficiency is high.

A system includes a controller having one or more processors. The system also includes a memory, and instructions stored on the memory, and executable by the one or more processors to output a control signal that causes an actuation of a valve to move a test distance via an electromechanical actuator; receive electrical property data corresponding to the actuation over the test distance by the electromechanical actuator; evaluate a condition of the valve based on the electrical property data; and generate an output based on the condition of the valve.

The utility model relates to the camera module detection field, and discloses an accurate multi-segment spacing module test tool comprising a fixed pedestal, the top surface of the fixed pedestal is slidably connected with a support assembly through a guide rail and a slide block, the support assembly is used for supporting a camera module, the top of the fixed pedestal is fixedly connected with an electric push rod, and the electric push rod is used for driving the camera module to move. The front face of the supporting assembly is fixedly connected to the telescopic end of the rear side of the electric push rod. The supporting assembly comprises a connecting bottom plate, the bottom face of the connecting bottom plate is fixedly connected to the top face of the sliding block, and the top faces of the left side and the right side of the bottom plate are each fixedly connected with a set of supporting plates. According to the utility model, through the arrangement of the slide block, the slide column and the damping disc, the camera module can move back and forth on the two slide rails, and the height and angle of the camera module can be adjusted to adapt to the height of an object to be detected, so that the test distance can be accurately and effectively controlled for detection, and the detection data is relatively accurate.

The utility model discloses a tool for detecting the environmental applicability of a single-point dof range finder, and the tool comprises an adjusting table which is disposed in a temperature control cabinet; the number of the reflection panels is two, the reflection panels are symmetrically arranged on the adjusting table, and an adjusting lead screw used for adjusting the distance between the two reflection panels is arranged in the adjusting table; and the fixed support is arranged between the two groups of reflection panels, the fixed support comprises an adjusting platform and a rotating support, the rotating support is rotatably arranged on the adjusting platform, and the rotating support is used for fixing a range finder to be measured and adjusting the angle of the range finder to be measured. According to the utility model, the adjusting table is arranged in the temperature control cabinet, the range finder to be measured is arranged between the two groups of reflection panels through the fixing support, the distance is prolonged through the reflection between the mirror surfaces, and then the detection panel is arranged at the corresponding position for adjustment until the required test distance is reached.

The present invention relates to a method for detecting defects in ferromagnetic test materials, in particular for the flux leakage test of ferromagnetic pipes, comprising magnetizing a test volume of the test material by means of an external magnetic field in order to generate a magnetization state of the test volume that can be characterized by magnetization, and scanning the surface of the test material by means of a probe arrangement having at least one magnetic field-sensitive flux leakage probe for detecting the flux leakage field caused by the defects, the flux leakage probe being held at a finite test distance from the surface of the test material during scanning and generating an electrical probe signal which is a measure of the strength of the flux leakage field. The method is characterized by determining the magnetization state of the test volume in the region of the flux leakage probe and generating a magnetization signal representing that measure, determining a probe signal normalized by the assigned magnetization signal, and evaluating the normalized probe signal to identify defects.

The application discloses a drift fast compensation method for an infrared radiation calibration system, which is based on two ambient temperature calibrations and two test distance calibrations, and is used for correcting temperature drift and path attenuation respectively. The blackbody temperature, the ambient temperature and the test distance are set to have at least two values respectively. In the linear response interval of the detector of the infrared radiation calibration system, the values of two factors are fixed, the infrared image gray values of the blackbody at the two values of the third factor are obtained, and at least four infrared image gray values are obtained. The expression equations of the four infrared image gray values are solved to obtain the blackbody radiation brightness response, the temperature drift compensation coefficient, the distance drift coefficient and the detector response bias. According to the solving result, the fast compensation of the gray value attenuation caused by the changes of the ambient temperature and the test distance is realized.

Systems and methods for contactless identification of an optical fiber under test (FUT) are disclosed. System embodiments include an optical power meter and an optical accessory. The power meter can include a casing, a detection port extending through the casing, and a photodetector optically coupled to the detection port within the casing. The accessory can include a housing and a focusing lens. The housing extends between an attachment end and a testing end, and encloses an interior region defining an optical pathway. The attachment end is releasably connected to the detection port, while the testing end is configured to be positioned at a testing distance from the FUT and allow fiber light emanating from the FUT to enter the optical pathway via free-space propagation. The focusing lens is positioned within the housing along the optical pathway and configured to direct the fiber light onto the photodetector through the detection port.

The application discloses a method and device for adjusting the testing distance of a camera module card, wherein the method comprises: obtaining the theoretical working distance of a target camera module, and determining the distance adjustment interval according to the theoretical working distance; controlling the testing card to move along the Z-axis in the distance adjustment interval according to a preset stepping strategy, and triggering the target camera module to collect corresponding card images at each stepping position to generate an image sequence; extracting the edge amplitude features of each card image, and calculating the gray value deviation based on the edge amplitude features as the definition evaluation value of the corresponding card image; determining the target stepping position according to the definition evaluation value, and driving the testing card to move to the target stepping position to complete the adaptive adjustment of the testing distance. Thus, the objectivity, consistency and accuracy of the determination of the testing distance of the card are improved.

The invention belongs to the field of zooming control, relates to a data analysis technology, is used for solving the problems that an existing automatic zooming system is low in efficiency and high in computing power dependence, and particularly relates to an automatic zooming system which comprises a control test module, an automatic control module and a control evaluation module which are connected in sequence. The control test module, the automatic control module and the control evaluation module are all in communication connection with the storage module, and the control evaluation module is further in communication connection with the control test module; all test distance values and matching values can be comprehensively processed to obtain the comparison table, the normalized pairing value in the comparison table is the universal focal length of the corresponding distance interval, the zoom control logic is optimized, the zoom control efficiency is improved, the zoom parameters of the lens are automatically controlled and analyzed, and the zoom efficiency of the lens is improved. Automatic control is carried out on the equipment terminal in an edge calculation mode, the zooming response time is shortened, the zooming control timeliness is improved, and meanwhile the focusing efficiency is guaranteed.

The present invention relates to a method for selecting a minimum test distance of target infrared radiation characteristics, comprising the following steps: determining the highest calibration temperature of a surface source black body when a spectroradiometer fills the field of view for calibration, calculating the radiation emittance of the surface source black body at the highest calibration temperature, calculating the radiation flux function of the surface source black body at the highest calibration temperature, calculating the radiation emittance of the target, calculating the radiation flux function of the target, determining the relationship between the area ratio of the target within the full field of view and the radiation emittance ratio, determining the preliminary minimum test distance of the target infrared radiation characteristics, and determining the minimum test distance of the target infrared radiation characteristics. The present invention determines the minimum test distance of the target infrared radiation characteristics based on a method for comparing the saturation of the radiation flux response voltage value on the detector image plane after the black body and the target radiation brightness pass through an optical system; the minimum test distance of the target infrared radiation characteristics determined by the method is verified, and the relative error is 1%.

The invention provides a test system for radar target detection. The test system for radar target detection comprises a base which is provided with a guide rail in the length direction; the target simulation device is arranged on the guide rail in a sliding mode, the target simulation device comprises a plurality of moving tables arranged in the height direction of the target simulation device, and the moving tables are configured to translate in the height position of the moving tables in the direction perpendicular to the guide rail; one or more test radio frequency front ends selectively arranged on the mobile station; and the tested radar device is also slidably arranged on the guide rail, is spaced from the target simulation device along the guide rail, and is used for arranging the tested target radar, so that the test distance is adjusted through the movement of the target simulation device and the tested radar device on the guide rail. According to the scheme, the size of the radio frequency front end can be ignored, the method is suitable for 3D millimeter wave radar and 4D millimeter wave radar detection, and radar detection cost and space requirements can be reduced.

The invention relates to a method for measuring a test distance (DT) separating a camera (CAM) from a user (1), comprising steps of: - prompting the user to get in a first position, - displaying a reference object, - acquiring a first image comprising the reference object and at least one body of the user, - detecting and measuring a calibration length from the reference and obtaining a calibration distance separating the camera and the reference object, - detecting and measuring at least one first reference length relative to the at least one body part, - prompting the user to get in a second position, - acquiring a second image comprising the at least one body part, - detecting and measuring at least one second reference length (RL') in the second image, and - obtaining the test distance (DT).