1087 results about "Test object" patented technology

The invention provides a multi-step automatic testing method based on machine vision, and the method comprises the steps: capturing an original image sequence of a test scene through a camera, extracting the contour features of a test object in an image through an edge detection algorithm, and obtaining a preliminary positioning coordinate; if the dynamic position change trend exceeds a preset threshold value, adjusting an image enhancement parameter to suppress background noise, and obtaining an enhanced target image; feature matching is carried out through the enhanced target image, a robust identifier such as a texture mode is extracted, and an accurate three-dimensional position coordinate is obtained; according to the accurate three-dimensional position coordinates, calculating an execution deviation value of the current step, and judging whether the deviation value is within an allowable range or not; if the deviation value is within the allowable range, a control instruction sequence is generated and transmitted to the mechanical arm, and a step execution confirmation signal is obtained; comparing a confirmation signal with a next image sequence through the steps, updating positioning model parameters, and determining a continuous adjustment scheme of the whole test process.

The invention is applicable to the technical field of PCB testing, and particularly relates to a PCB electrical performance testing method, which comprises the following steps of: acquiring test object information; wherein the object information comprises a PCB image and at least one test area, the PCB image corresponds to the PCB and reflects the circuit structure of the PCB, the test area is marked on the PCB image, and the test area comprises a main test position and an auxiliary test position; when an electrical performance test instruction is received, contact judgment information is obtained based on the test object information; when it is detected that the auxiliary test probe is in stable contact with the auxiliary test position, the control device controls the main test probe to continuously send test signals and collect test results in real time, and test analysis information is obtained based on the test results. According to the PCB electrical performance test method provided by the embodiment of the invention, the problem of high test error caused by asynchronous actions of the main test probe and the auxiliary test probe can be improved.

The invention provides an intelligent debugging method and system for transformation of secondary equipment of an intelligent substation, and the method comprises the steps: calculating a sub-CRC value of an SCD file, comparing the sub-CRC consistency of IED in the SCD file before and after transformation, and obtaining a consistency comparison result; after detecting that the configuration of a certain IED is changed, determining an object to be tested and a boundary to be tested; executing a secondary equipment debugging task, performing modeling processing on the to-be-tested object, the test instrument and the test process to form a test task standard model, and generating a test template for the fixed single body and the whole group of equipment; according to the consistency comparison result, the to-be-tested object and the to-be-tested boundary, calling a test template, and instantiating to generate a debugging scheme; testing is carried out according to the testing scheme, and a secondary equipment transformation debugging result is obtained; and when all tests are completed, recovering the states of the equipment pressing plate and the control word before the tests. The technical problem that the field operation risk is caused due to the fact that the transformation and debugging efficiency and safety of the secondary equipment are low is solved.

A system, method, and computer-program product includes obtaining, via an application programming interface (API), a test object that includes application usage data of a deployed AI application for a target time span, executing, in real-time by one or more computer processors, one or more application behavior tests that assess an operational behavior of the deployed AI application, detecting, by the one or more computer processors, that a misbehavior occurred in the deployed AI application during the target time span and one or more deviant features contributing to the misbehavior in response to executing the one or more application behavior tests, and returning, by the one or more computer processors, the one or more deviant features contributing to the misbehavior to a subscribing entity associated with the deployed AI application.

A mask-based testing system for detecting a biomarker received from lungs and airways of a test subject includes an exhaled breath condensate (EBC) collector integrated into an inside of a face mask worn by the test subject. The EBC collector converts breath vapor received from the lungs and airways of the test subject into a fluid biosample. A biosensor is fixed to the inside of the face mask for receiving a fluid biosample from the EBC collector and testing the fluid biosample for a target analyte. The biosensor generates a test signal dependent on at least the presence and absence of the target analyte in the fluid biosample. An electronic circuit is fixed to an outside of the mask for receiving the test signal, determining from the test signal a test result signal depending on detecting or not detecting the target analyte, and transmitting the test result signal to a remote receiver.

The invention provides an electrically conductive contact pin that improves test reliability for a test object and prevents separation in a side opening direction of a guide hole due to a lower catch portion.

The invention belongs to the field of hydrogen filling control, relates to a data analysis technology, and aims to solve the problem that control parameter adjustment cannot be performed by combining various basic parameters of a hydrogen filling machine in a hydrogen filling process in the prior art, in particular to a hydrogen filling control method and equipment of the hydrogen filling machine and a storage medium. Comprising the following steps: performing control test on the filling process of the hydrogen adding machine: marking the hydrogen adding machine as a test object, allocating a plurality of groups of test tasks to the test object, allocating a group of control parameters to the test tasks, performing filling control on the test object according to the control parameters, and executing the test tasks; dynamic optimization control over the hydrogen filling process of the hydrogen filling machine is achieved, and the system can automatically adjust the filling parameters according to different environments and equipment states by establishing association between the basic parameters and the control parameters; according to the method, the fluctuation of the cold load of the heat exchanger is effectively reduced, and the nonlinear cumulative effect of the temperature rise of the storage tank is reduced.

Proposed are a test device and a manufacturing method of the test device capable of testing a test object that is provided with an electrode which has a size and / or a pitch distance ranging from 1 to 100 micrometers (μm).

The invention relates to the technical field of anti-deception positioning, and discloses a GNSS equipment anti-deception signal interference positioning capability test system and method, and the system comprises a receiving module, a deception signal generation module, a transmitting module, a reference receiving module, a power dividing module, and a control module. The method corresponds to the system. According to the application, the power of a single-path forwarding type deception signal, a single-path forwarding type deception signal and a single-path forwarding type deception signal can be adjusted in the frequency bands of 1.5 GHz to 1.6 GHz and 1.2 GHz to 1.3 GHz, the power of the deception signal can be adjusted, a plurality of tested objects can be compared and tested at the same time, and the problems of large difference between a test environment and a real environment, low reliability of a test result and the like in the prior art can be effectively solved.

The invention provides a marine intelligent test device, which comprises a heave measurement unit, a tension detection device, a winch, a telescopic mechanism and a control unit, and is characterized in that the heave measurement unit is used for measuring a heave signal of a ship body and transmitting the heave signal of the ship body to the control unit; the winch is used for winding and unwinding a cable, the telescopic mechanism comprises a pulley block used for guiding the cable, the pulley block is installed on a telescopic beam, the telescopic beam is connected with a telescopic driving device used for driving the telescopic beam to horizontally move, and the cable of the winch penetrates through the pulley block on the telescopic mechanism to be connected with a tested object; the tension detection device is used for detecting the tension on the cable and transmitting a tension signal to the control unit; and the control unit is used for receiving the heave signal and the tension signal, outputting a first control signal to the winch according to the heave signal and the tension signal so as to realize winding and unwinding of the cable, and outputting a second control signal to the telescopic driving device so as to realize expansion or retraction of the telescopic beam.

The invention discloses a multichannel thermocouple temperature compensation method for a liquid rocket engine test, and relates to the technical field of liquid rocket engine tests, and the method comprises the steps: determining the type of a target thermocouple temperature sensor according to the characteristics of a tested object in a to-be-tested liquid rocket engine, and determining a corresponding temperature compensation wire; a target thermocouple temperature sensor is connected with a temperature compensation wire to form an acquisition device; a thermocouple voltage signal and a thermistor voltage signal are acquired in real time through an acquisition device, and the signals are transmitted to a processor based on a wiring terminal in the temperature compensation cabinet; and the thermocouple temperature corresponding to the input data is determined through a preset cold end compensation algorithm in the processor. According to the invention, the precision and reliability of temperature measurement can be improved, the system structure is simplified, the system cost is reduced, and the system is suitable for temperature measurement requirements of multi-channel, high-precision and complex environments in a liquid rocket engine test.

The present application belongs to the technical field of communications. Disclosed are a fault diagnosis method, an electronic device and a storage medium. The method comprises: separately performing connectivity detection, configuration information detection and performance analysis on a path to be tested; during the process of performing the configuration information detection on said path and in response to a connectivity detection result obtained by performing the connectivity detection on said path, performing the configuration information detection on an object, the status of which is abnormal as indicated by the connectivity detection result, among a current test object of said path undergoing the configuration information detection and a next object to be tested; and on the basis of the connectivity detection result, the configuration information detection result and a performance analysis result, obtaining a fault diagnosis result of said path, the fault diagnosis result comprising information of the abnormal object.

The embodiment of the invention relates to the field of computer software testing, and discloses a buried point testing method and system, a server, a storage medium and a program product. The method comprises the following steps: calling a burying point test case described by a natural language corresponding to a tested object; identifying an operation platform of the tested object; converting the burying point test case described by the natural language into an underlying operation instruction executable by the operation platform, and sending the underlying operation instruction to the operation platform; and obtaining test result data reported after the operation platform executes the underlying operation instruction, obtaining expected result data of the buried point test case for the operation platform, and performing data assertion according to the test result data and the expected result data. According to the application, through the burying point test case described by the natural language, the operation steps in the burying point test are decoupled from the operation platform and the specific business, and the same test case can be suitable for different operation platforms, so that the problem of high maintenance cost caused by the fact that different platforms need to maintain test codes respectively is solved.

The invention provides a high-parallelism test method of an optical comprehensive test platform, relates to the field of active optical testing, and aims to realize parallel testing of multiple tested objects or multiple test items through N independent test channels, avoid waiting time of traditional serial testing, and effectively improve manufacturing efficiency by combining the high-parallelism characteristic of the platform. Dynamic resource scheduling distributes tasks based on channel resource states monitored in real time, resource idling is avoided, the characteristic of high integration of a platform is matched, multiple modules share the platform, cost is effectively shared, the overall utilization rate of equipment is improved, modules such as optical power meters and variable optical attenuators integrated in all channels in a hardware architecture support hot plugging, and the overall performance of the equipment is improved. And the task analysis algorithm can flexibly map test items, adapt to requirements of different tested objects, conform to the advantages that the platform is matched as needed and easy to expand, can protect investment and adapt to dynamic changes of a test scene, and a distributed data acquisition mechanism synchronously acquires data of each channel and provides support for generating a reliable test report.

Methods, systems, and software are provided for predicting care pathway options for a medical condition in a test subject. In one implementation, a method includes retrieving a set of characteristics of the test subject from an electronic medical record for the test subject, retrieving data from a system modeling human tissue, and providing information comprising the set of characteristics from the electronic medical record and the data from the system modeling human tissue to an artificial intelligence (AI) component to receive as output from the AI component one or more care pathways for the medical condition.

The invention provides a real-time online self-calibration method and system for a charge and discharge test channel, and relates to the technical field of automatic calibration. According to the method, key parameters of each test channel are continuously monitored through an upper computer, and once the control precision of a certain channel exceeds a preset threshold due to deviation, a system automatically identifies the channel as a to-be-calibrated channel. And then, the system intelligently matches and allocates an available target independent calibration channel according to the channel information and the real-time operation state of each calibration channel in the calibration module. Through automatic operation of the switch matrix, a to-be-calibrated channel is disconnected from a test object and connected with a target calibration channel, the target calibration channel is controlled to carry out multi-point calibration on the to-be-calibrated channel, data are collected to generate a calibration curve, a new calibration coefficient is calculated according to the calibration curve, the coefficient is written into the to-be-calibrated channel, and after calibration is completed, the to-be-calibrated channel is calibrated. And the channel automatically recovers the original test process. On-line and closed-loop full-automatic calibration is realized in the whole process, and continuity and accuracy of test data are ensured.

The invention relates to a measuring arrangement for the interferometric determination of the surface shape of a test object, wherein a test wave generated from electromagnetic radiation and reflected at the test object can be superimposed with a reference wave not reflected at the test object, with a reference element (110, 210, 310, 410) having a reference surface (112, 212, 312, 412) which, in the optical beam path, splits off the reference wave from the test wave before it strikes the test object (120, 220, 320, 420) by reflection, and at least one beam shaping surface (111, 211, 311, 411, 413, 414) located in the optical beam path in front of the reference surface, wherein this beam shaping surface is designed as an aspherical distortion correction surface such that a distortion occurring in a predetermined reference plane of the measuring arrangement is reduced. The invention further relates to a method for manufacturing an optical element for such a measuring arrangement.

The invention relates to a self-adaptive control method, system and device for environment test equipment, and the method comprises the following steps: S1, data collection: collecting environment detection data and data of a corresponding actuator according to a to-be-controlled physical quantity; s2, selecting or constructing a control object according to the physical quantity to be controlled; s3, performing online identification operation when an identification condition is met, otherwise, directly executing the step S4; s4, feedforward and feedback: calculating feedforward compensation and feedback compensation according to the value of the to-be-estimated quantity, and superposing the feedforward compensation and the feedback compensation to obtain a control instruction; and S5, performing constraint allocation on the actuator: performing saturation constraint processing on the control instruction to obtain a control quantity of the corresponding actuator. Joint online identification can be carried out on the to-be-estimated quantity only through perturbation excitation; different loads and test object states are automatically adapted; saturation constraint processing is adopted; the model and the algorithm are low in calculation amount, and precision, speed and engineering realizability are considered.

The invention discloses a fusion device magnet coil copper conductor nondestructive testing method and a computer product, and relates to the technical field of nondestructive testing, the method comprises the following steps: obtaining original eddy current testing signals of a to-be-tested object or a plurality of areas of the to-be-tested object under specific physical conditions; preprocessing the original eddy current detection signal, wherein the preprocessing comprises denoising and signal correction; extracting features from the preprocessed signals and carrying out normalization processing; on the basis of a pre-established multi-parameter model related to the physical conditions of the to-be-tested object, theoretical signals of the to-be-tested object under various physical conditions are predicted through finite element simulation; and performing matching estimation on the normalized signal and a theoretical signal to obtain an estimated signal, and evaluating the defect existence probability based on the estimated signal. Based on an eddy current testing technology, a probe scans a sample and obtains a signal, and a finite element analysis method is combined to simulate and evaluate defects such as cracks possibly existing in a material.

Systems and methods are directed toward low temperature testing of motion, vibration, or force responses of test fixtures. For cryogenic shock testing, a test object can be secured on a test apparatus, such as a test fixture of a shock table. An elongated enclosure, such as a flexible tube, can be connected between the test fixture and a laser vibrometer, positioned orthogonal to a surface normal at a test region of the test fixture to enable light emitted by the vibrometer to be reflected from the test region back to the vibrometer. A flow of purge gas can be introduced into the tube, proximate the test fixture, to direct moisture away from the test fixture. The flow can prevent condensation or ice from forming on the surface of the test fixture at the cryogenic temperature. A shock event can be simulated, and the response of the test region measured by the laser vibrometer. The impact of the shock event on the test object can then be observed.

The invention relates to an electric field visualization real-time monitoring system and method, belongs to the technical field of electric field visualization, and is used for solving the problems of insufficient real-time performance, large measurement interference, incomplete imaging, weak multi-user cooperation and lack of unified time reference in the prior art. The method comprises the following steps: acquiring electric field scattering data of a test body by a conformal optical fiber electric field sensor array, transmitting the electric field scattering data to an edge GPU node through a plastic optical fiber-CAN-FD link, and converting the electric field scattering data into electric field amplitude data; the edge GPU node is combined with WebGL3D texture mapping and a volume ray casting algorithm to complete volume rendering, and multi-user concurrent interaction is realized through a Web server and a browser client; and a White-Rabbit clock architecture is adopted to provide a unified time reference for the whole process. According to the method, dynamic and accurate capturing of the electric field is achieved, and the multi-user concurrent access requirement is effectively met.

The invention provides a gap nonlinear control surface flutter wind tunnel test system and method based on steering engine excitation. The system comprises a wind tunnel test section, a test object and a parameter-adjustable excitation mechanism outside a wind tunnel field, wherein the parameter-adjustable excitation mechanism is composed of a transverse clamping mechanism, a longitudinal supporting mechanism, an excitation system and an angle sensor. The excitation system comprises a steering engine, a steering engine rocker arm and a connecting rod, one end of a spring rod is fixed to the longitudinal supporting mechanism, and the other end is in clearance fit with the connecting rod. By adjusting the effective length of the spring rod, the fit clearance and the excitation of the steering engine, the clearance nonlinear rigidity applied to the test control surface can be changed. In a wind tunnel test, an angle sensor is used for collecting rudder shaft rotation angular displacement response in real time, excitation-response characteristic testing before and after flutter occurs is achieved, and the influence rule of gap nonlinear parameters on rudder surface dynamic characteristics is effectively studied. The test principle is simple, and a new way is provided for excitation-response characteristic measurement of the full-motion control surface under different gap nonlinear rigidities.

The invention relates to an interferometric testing arrangement for testing the surface shape of a test object, comprising a lighting device (105, 205, 305) for generating an input wave from electromagnetic radiation produced by a light source and an interferometer (150) in which, after splitting the input wave into at least one test wave directed towards the test object (170) and a reference wave, testing the surface shape of at least a partial surface of the test object (170) can be carried out by interferometric superposition of the at least one test wave and the reference wave, wherein a diffuser (130, 230, 330) is arranged in the lighting device, wherein the lighting device has a first optical path (110, 210, 310) and a separate second optical path (120, 220, 320), and wherein the input wave is transmitted via both the first optical path (110, 210, 310) and the second optical path (120, 220, 320). 220,320) can be coupled into the interferometer (150).

The invention discloses a signal identification method and system, electronic equipment and a storage medium. The method comprises the following steps: acquiring an original electroencephalogram signal of a test object; performing feature extraction on the original electroencephalogram signals, and constructing an initial feature matrix of the original electroencephalogram signals; reconstructing the initial feature matrix based on module parameters of a plurality of target hardware modules in the signal recognition device to obtain a target feature matrix, the target feature matrix satisfying processing conditions of the plurality of target hardware modules, and the data dimension of the target feature matrix being greater than the data dimension of the initial feature matrix; the target feature matrix is input into a signal recognition device, the original electroencephalogram signals are recognized through the signal recognition device, a signal recognition result is obtained, and the signal recognition result is used for representing the behavior intention of the test object. The technical problem that the operation speed of electroencephalogram signal recognition is low in the prior art is solved.

The invention discloses a non-contact uniaxial compression test infrared strain meter and a use method thereof, and belongs to the field of rock mechanics and engineering testing. The objective of the invention is to solve the prominent problems of low measurement precision, easy influence by characteristics of a test object, difficulty in comprehensively and accurately reflecting full-field strain distribution and the like of a traditional contact type strain measurement device in a uniaxial compression test. A non-contact infrared imaging measurement technology is adopted, a high-speed infrared camera is matched with a DIC algorithm, real-time mapping of full-field strain distribution is accurately achieved, transient behaviors such as crack initiation and expansion are clearly captured, strain field data and temperature field data can be synchronously obtained, measurement of the strain field data and the temperature field data are organically combined, and by means of the infrared technology and an environment control device, the measurement accuracy is improved. The device can stably work in severe environments such as high temperature and corrosivity, and is suitable for various complex samples; according to the method, the accuracy and comprehensiveness of measurement are effectively improved, the test efficiency is greatly improved, the method can be widely expanded to multiple fields of civil engineering, aerospace and the like, and powerful support is provided for research on mechanical properties of materials.

Illustrative embodiments include a method, an electronic device, and a computer program product for test case generation. The method includes, in response to a target function of a system being developed, determining updated knowledge, corresponding to the target function, in a knowledge base for the system. The method further includes identifying at least one test path from the updated knowledge in the knowledge base based on a predetermined test range for the target function. The method further includes extracting a test object from each of the at least one test path to generate a test case for the target function. By this method, ontology-based automatic generation of test cases can be realized. For example, whenever a product is iteratively updated, incremental knowledge is used as a test target, which can ensure comprehensive coverage of a test strategy without missing any test points, while also improving efficiency and case quality.

A device, system and methodology for horizontal gaze nystagmus (HGN) testing. Prior to a test subject taking an action that is verboten in an impaired state, such as driving a vehicle or operating complex or dangerous machinery, the test subject is positioned within a face recognition box of a screen and a HGN simulation test performed, capturing HGN eye movements of the test subject from which the present HGN physiological state of the test subject is determined. The present HGN physiological state of the test subject is compared to a reference HGN state to determine whether the test subject is impaired. Impairment causes temporary restriction of the functionality of the machinery or vehicle.

The invention relates to the technical field of online material performance test instruments, and discloses a sensor pulse pressure fatigue test closed-loop control system based on signal drift compensation, which comprises a load excitation execution module, a signal feedback acquisition module and a closed-loop control logic module, the closed-loop control logic module selects a phase-locked characteristic observation window by calculating a load first-order derivative, extracts a dynamic gain coefficient reflecting the response characteristic of a controlled test object in the observation window, and inputs the dynamic gain coefficient into a filter to generate a characteristic variable; the variable is compared with the standard response envelope line, the deviation is calculated, the compensation factor is calculated and superposed to the driving instruction, the real-time correction of the output gain is realized, and through the identification and active compensation of the signal drift, the sensing deviation caused by the structural degradation of the sensitive component is effectively eliminated, and the sensing consistency of the test process is maintained.

The embodiment of the invention provides a method for adjusting a human-computer interface in a vehicle, the vehicle and a computer readable storage medium. The method comprises the steps that a crisis perception test is conducted on a test object based on a preset test device, a first adjustment strategy is obtained, the preset test device comprises an electroencephalogram instrument, an eye movement instrument and an electrocardio instrument, and the first adjustment strategy is used for adjusting the opportunity that a human-computer interface of a vehicle transmits dangerous driving scene information to a driver; driving distraction tests are conducted on the test object based on a preset test device, a second adjustment strategy is obtained, and the driving distraction tests comprise a visual distraction test, an auditory distraction test, a cognitive distraction test and a manual distraction test; determining a human-computer interface adjustment strategy based on the first adjustment strategy and the second adjustment strategy; and adjusting the human-computer interface based on the human-computer interface adjustment strategy. According to the method and the device, the technical problems that the safety assessment of the HMI design is not accurate enough and the HMI design still has potential safety hazards in related technologies are solved.

The invention provides a double-layer focusing method and system. The method comprises the following steps: acquiring a light spot image reflected by the surface of an object to be measured; preprocessing the light spot image, obtaining a pixel line-pixel value curve graph, and screening peak points and valley points of the pixel line-pixel value curve graph; calculating a left threshold value and a right threshold value of each valley point based on the pixel value of each valley point and the pixel value of the peak point adjacent to the valley point; on the basis of the left threshold value and the right threshold value of the valley point, the number and the width of segmentation segments on the left side and the right side of the valley point are obtained respectively, and whether the valley point is a segmentation point or not is judged on the basis of the pixel value of a peak point in each segmentation segment; and respectively calculating centroids on the left side and the right side of the segmentation point, and obtaining a first adjustment distance between the microscope objective and the target layer of the object to be measured so as to realize automatic focusing. According to the method and the device, the valley points meeting the conditions are screened as the segmentation points, and the error between theoretical calculation and practical operation is reduced, so that the focusing precision is improved, and focusing is realized more quickly within an allowable deviation range.