41 results about "Electromagnetic testing" patented technology

The present invention relates to the technical field of data processing, and in particular to a method and apparatus for evaluating the service life of a furnace tube, and a device and a medium. The method comprises: acquiring a furnace tube high-temperature plasticity evaluation model, wherein the furnace tube high-temperature plasticity evaluation model is obtained by means of training based on high-temperature plasticity data of historical furnace tubes; using a crawling robot to acquire a surface image, an electromagnetic testing result and a raster scanning result of a target furnace tube; on the basis of the surface image, the electromagnetic testing result and the raster scanning result, determining the degree of oxidation, carburization data and the degree of deformation at different height positions on the target furnace tube; on the basis of any two or more types of the above data and the furnace tube high-temperature plasticity evaluation model, determining plasticity results at different height positions on the target furnace tube; and finally evaluating the remaining service life of the target furnace tube. A prediction model is trained on the basis of data pertaining to three causative factors, i.e., carburization, deformation and oxidation of furnace tubes, such that the prediction model can accurately predict the plasticity of an in-service furnace tube, so as to evaluate the remaining service life of the furnace tube.

The application provides an electromagnetic safety restoring force digital twin training method and system, constructs a test twin space, determines a test equipment group based on electromagnetic test data, and associates real interference data; determines interference dimensions based on equipment properties of each test equipment in the test equipment group, generates false interference data according to the interference dimensions; updates the state of the test equipment according to the real interference data, generates actual data, and directionally replaces the running data of the corresponding dimensions based on the false interference data to generate false data; collects calling information of the training end to the auxiliary plug-in, generates error area guide data according to the comparison information of the calling information, the actual data and the false data, and the auxiliary plug-in one-to-one corresponds to the running data of each dimension, so that the real interference data and the false interference data can be fused, the training complexity is improved, and the disposal efficiency of an operation and maintenance personnel for an electromagnetic safety event is improved.

The present application belongs to the technical field of low-scattering electromagnetic testing, and solves the problems of load bearing, attitude adjustment, power supply, control, cooling and other functional requirements of active targets, and discloses a heavy-load two-dimensional rotating top with active RCS testing, comprising a rotating top cylinder, an elevation assembly and an azimuth assembly in the rotating top cylinder, and an axially-through central passage formed inside, the elevation assembly and the azimuth assembly being arranged on both sides or the periphery of the central passage; the elevation assembly is connected with a lower connecting seat, the connecting seat passage is in communication with the central passage of the rotating top cylinder, the azimuth assembly drives the rotating top shell to rotate, and the top end of the rotating top cylinder is provided with an interface assembly. The present application adopts multi-stage speed reduction and screw transmission technology, has high load bearing capacity and high-precision motion characteristics, and realizes the integration of power supply, liquid supply, signal transmission and other functions through the design of hollow structure and interface plate.

The embodiment of the invention discloses a monitoring device for a vehicle electromagnetic compatibility anti-interference test. The monitoring device comprises a monitoring and controlling device and a plurality of mechanical spring metronomes, each mechanical clockwork metronome is correspondingly placed in a shooting field of view of each camera image device of the to-be-tested vehicle; the monitoring and controlling device is electrically connected with each camera type image device of the to-be-tested vehicle, and is used for acquiring a dynamic video picture which is shot by each camera type image device and is related to the mechanical clockwork metronome; and comparing the dynamic video picture of the related mechanical spring metronome shot by each camera type image device with the target dynamic video picture so as to monitor the operation condition of each camera type image device in the electromagnetic test environment. The monitoring device adopts a monitoring device insensitive to electromagnetic signals, namely does not contain an electronic structure or an electronic device, and can stably and reliably work under strong electromagnetic interference, so that the problems of display screen clamping stagnation, equipment shutdown and the like in an electromagnetic interference environment are avoided.

The invention provides a hiding device for a test darkroom and the test darkroom. The top of the test darkroom is provided with a hiding parking area. The hiding device comprises a lifting mechanism, a turnover mechanism and a control system, and the lifting mechanism and the turnover mechanism can jointly form a closed wave-absorbing shielding surface through the control system so as to shield interference sources such as travelling vehicles in the hidden parking area. Driving or similar electromagnetic test interference sources can be effectively shielded and shielded, and the influence of the structure on the electromagnetic environment of the test darkroom is reduced.

The invention provides an abnormal detection positioning method and system for an electromagnetic test, and the method comprises the steps: carrying out the electromagnetic interference test of a target device, and obtaining abnormal position information and abnormal test parameters when a detection abnormality occurs; obtaining an equipment abnormal area and a plurality of implicit abnormal elements in the equipment abnormal area according to the abnormal position information and an index, and collecting an infrared image of the equipment abnormal area; according to the plurality of implicit abnormal elements, carrying out integration level analysis to obtain an integration level, and configuring a detection positioning coefficient; and according to the infrared image, identifying a plurality of temperature anomalies of the plurality of implicit abnormal elements, respectively correcting the detection positioning coefficients, and respectively carrying out array anomaly identification according to the anomaly test parameters to obtain a plurality of element anomaly probabilities as anomaly detection positioning results. The technical problem that in the prior art, when electronic equipment is subjected to electromagnetic interference testing, abnormal element detection and positioning are not accurate is solved.

The invention relates to the technical field of deep rock mechanics, and provides a deep in-situ environment rock parameter acoustic electromagnetic fidelity test system and method.The deep in-situ environment rock parameter acoustic electromagnetic fidelity test system comprises a cabin, a test space is formed in the cabin, and a rock core sample enters the test space from one end of the cabin through a displacement unit; the temperature and pressure control unit is communicated with the cabin body and is used for adjusting the temperature and the pressure in the cabin body to reach target values and keeping the target values stable; the acoustic electromagnetic testing module is arranged in the cabin body and used for calculating the wave velocity, the resistivity and the apparent resistivity of the rock core sample, and the acoustic electromagnetic testing module is connected with an external acoustic electromagnetic data acquisition system; and the remote control system is electrically connected with the acoustic electromagnetic test module and the temperature and pressure control unit. According to the method, the original occurrence state of the rock can be restored in a fidelity manner, the physical and mechanical parameters of the rock in a deep in-situ real environment are tested and analyzed, the evolution law of the physical and mechanical parameters along with the deep environment is analyzed, and reliable data support is provided for revealing the constitutive relation, the failure mechanism and the disaster breeding mechanism of the deep rock mass.

The invention relates to a ground reflection coefficient estimation method based on broadband imaging, and relates to the technical field of electromagnetic scattering characteristic testing, and the method comprises the steps: calculating the height of an antenna and the height of the center position of a reference target based on a to-be-tested reflection angle and the distance between a test system and the reference target in an actual scene; the height-direction scanning guide rail carries the antenna to move in the height direction, and the radio frequency transceiver system synchronously carries out broadband to obtain broadband synthetic aperture data; performing focusing imaging processing on a test result; the method has the advantages that the mode that a single-station testing system is combined with a reference target for broadband imaging is adopted, ground forward reflection coefficient estimation under the condition of a small grazing angle is completed, electromagnetic wave multi-path transmission characteristics are studied, and the method has the advantages that the method is simple and easy to implement, and the application range is wide. And development of an electromagnetic test technology and research on environmental electromagnetic characteristics are supported.

The invention discloses an electric vehicle static current test method and device, electronic equipment, a medium and a product. The method comprises the following steps: configuring an upper computer engineering file and electromagnetic interference parameters for a static current test of the whole vehicle; simulating an electromagnetic test environment according to the electromagnetic interference parameters; according to the upper computer engineering file, performing a whole vehicle static current test on the to-be-tested vehicle in the electromagnetic test environment to obtain a test result; and storing the test result, and outputting an exception report when an exception is detected according to the test result. The method can solve the problem that an existing test method cannot realize reliable test and abnormality diagnosis of the static current of the whole vehicle in a complex electromagnetic environment.

A modular RF power amplifying system is provided. The system includes a housing that supports RF transmission and applications such as electromagnetic testing and sterilization. The system includes a pulsed RF signal generator and one or more RF amplifying modules, which may be replaceable and operate across different frequency ranges including L-band. An antenna that transmits amplified RF signals toward a target, which may include microorganisms, vegetation, or medical tools. The antenna may be a horn type and positioned in an anechoic chamber for electromagnetic measurements. A power management system supplies power to the RF generator and amplifiers and the antenna may activate transmission upon detecting a target in a sterilization zone.

The invention discloses a dynamic electromagnetic reverberation chamber based on plasma regulation and control and a control method thereof, and belongs to the technical field of electromagnetic testing. A plasma array module and a driving control module are arranged on the inner wall surface of a cavity of the reverberation chamber; the electronic density and the collision frequency of the plasma unit are changed by adjusting the discharge parameters of the plasma unit in real time, so that the equivalent quality factor Q value, the normalized field intensity and the energy attenuation time constant of the reverberation chamber are dynamically and continuously adjusted and controlled; the limitation that a traditional reverberation chamber depends on a fixed wave-absorbing material or a mechanical stirrer is broken through, millisecond-level rapid switching of key electromagnetic parameters is achieved, the device has the advantages of being high in space efficiency, compatible in broadband and flexible in working mode, and the testing efficiency and the application range of the reverberation chamber are remarkably improved.

This invention relates to the field of engine control systems, and more specifically, to an electromagnetic testing method and system for engine control systems based on an open-loop mode. The method includes the following steps: calibrating the test environment according to the electromagnetic test requirements of the engine control system; setting relevant state parameters for the control system's operating mode, adjusting the drive unit speed to ensure the alternator operates at a specified speed, and setting the excitation device to cause the speed sensor to output a specified signal; monitoring and recording the controller's transmission data; applying test-level electromagnetic excitation to the control system; monitoring changes in key signals during the test, and sequentially completing the test at all test points; stopping the application of the electromagnetic excitation signal, and repeating the above steps according to the control system's operating mode until the electromagnetic test of the control system is completed. This invention improves test safety, reduces test complexity, and increases the efficiency of electromagnetic compatibility design and test verification for engine control systems.

The present invention belongs to the electrical devices sector, and refers, more specifically, to a manufacturing process of inductors and transformers in general, with continuous winding, with or without an iron / ferrimagnetic core. In relation to the current methods, of individual manufacture, the main innovations of this invention are the reduction of manufacturing costs and agility in the process (greater productivity). The central inventive concept lies in the coiling process on a continuous line for the manufacture of inductors and transformers. In addition to coiling, the processes of core formation, assembly, cutting and electromagnetic testing are part of this continuous manufacturing line. The process for manufacturing inductors and transformers with continuous winding is divided into the following stages: I. Solid Bar Formation (1); II. Continuous Coiling (2); III. Assembly and Fixing of Terminals (3); IV. Cutting and Testing (4); and V. Packaging (5).

The application discloses a train interference analysis method and device and a storage medium, and relates to the field of train interference analysis. In the scheme, the complex permittivity under different frequencies is measured in advance to obtain a corresponding relationship between the complex permittivity and the frequency, so that when electromagnetic analysis is performed on the whole train, the target complex permittivity corresponding to the current simulation frequency in the corresponding relationship is used instead of the complex permittivity provided in the existing literature, thereby avoiding the problem that the cited complex permittivity cannot be verified. Furthermore, the accuracy of electromagnetic testing on the whole train is higher by using the pre-measured complex permittivity. In addition, when electromagnetic analysis is performed on the whole train in the application, an electromagnetic simulation model is established, which is an entity simulation model based on the vehicle body structure. Compared with the simplified electromagnetic model commonly used in the prior art, the simulation result obtained is closer to the actual application scenario, so that the reference significance of the simulation result is greater and the value is higher.

A test system (10) comprises a device under test (14) and a test device (12). The device under test (14) comprises a first initiation unit (27), wherein the first initiation unit (27) is configured to generate a first wireless initiation signal. The initiation signal consists of at least one of an electromagnetic wave and a sound wave, wherein the initiation signal comprises a first test command. The test device (12) comprises a first sensor unit (17), wherein the first sensor unit (17) is configured to receive the initiation signal via the first sensor unit (17). The test device (12) is configured to generate a first electromagnetic test signal based on the first test command.

This invention proposes a rapid cycle life testing system and method for lithium-ion batteries, relating to the field of functional testing, and more specifically to the field of electrical performance testing. The system includes: multiple analysis mechanisms for acquiring various radio electromagnetic test data, correlation parameters, and the average cycle life and previous batch intervals of lithium-ion batteries from each historical production batch; and a cycle life assessment mechanism for intelligently assessing the cycle life of the current lithium-ion battery based on the analysis results from the multiple analysis mechanisms using an intelligent cycle life assessment model. This invention addresses the technical problem of the difficulty in rapidly and accurately testing the cycle life of massive quantities of lithium-ion batteries one by one. By introducing a customized intelligent cycle life assessment model and comprehensively selecting multiple fundamental information sources, an intelligent cycle life numerical analysis mechanism is constructed, thereby solving the aforementioned technical problem.

The invention discloses an electromagnetic environment test stationing optimization method based on big data analysis, relates to the technical field of electromagnetic environment test, and is used for solving the problems of low efficiency and distortion of test stationing. According to the method, an electromagnetic test data base is generated by collecting electromagnetic monitoring data and interference event data, credible hierarchical management is carried out on records through quality tags, space-time aggregation and partition clustering are executed on the basis to generate risk partitions and cover gaps, interpretable generation of candidate distribution points is driven, the candidate distribution points are worked into work orders, and the reliability of the work orders is improved. The work order comprises a measurement parameter set, a constraint parameter set, a replacement point set and a priority rule, linkage scheduling solving is carried out in combination with spatial constraint and a resource state, an execution plan comprising work order selection, resource allocation, a route sequence and time period scheduling is output, sampling is transmitted back in the execution process, consistency verification is carried out, and the work order is obtained. And when the trigger rule is met, a supplementary work order or a retest work order is generated, closed-loop iteration of stationing optimization is realized, and invalid field work and rework are reduced.

A method for identifying indications in an object via non-destructive testing using inspection equipment comprising a probe is described. The method includes: recording test data corresponding to a signal measurement acquired by the probe; processing the test data using a first analysis machine learning algorithm trained to output a list of detected landmarks; processing the list of detected landmarks to identify regions in the object based on the landmarks; processing the test data and the identified regions using a second analysis machine learning algorithm to output a list of detected indications; processing the list of indications to automatically classify each indication according to one of a plurality of predefined indication types; and outputting the classified indications in a report specifying positions of the classified indications in the object. A corresponding system and non-transitory computer-readable medium are also described.

Electromagnetic ("EM") test stirrer (20, 120) for use in EM testing in an EM test chamber (10, 110). The stirrer (20, 120) has a test element (24, 124) with a rotationally asymmetrical geometry. The asymmetrical geometry is defined by a plurality of openings (30, 130), each of the openings extending outwardly from at or proximal a radial centre (52, 152) of the test element (24, 124) along a respective path. The radial centre (52, 152) defines an alignment axis (50, 150) of the EM test stirrer (20, 120).

The invention provides a rapid detection system and method for the cycle life of a lithium ion battery, and relates to the field of function testing, in particular to the field of electrical performance testing. The system comprises a plurality of analysis mechanisms which are used for respectively acquiring a plurality of wireless electromagnetic test data and associated parameters of a current lithium ion battery, the average cycle life times of the lithium ion battery of each historical production batch and the interval duration of a previous batch; and the service life identification mechanism is used for intelligently identifying the cycle life times of the current lithium ion battery according to the analysis results of the plurality of analysis mechanisms by adopting an intelligent cycle life identification model. In order to solve the technical problem that the requirement for one-by-one rapid and accurate detection of the cycle life of massive lithium ion batteries in batches is difficult to meet, an intelligent cycle life numerical value analysis mechanism is constructed by introducing a cycle life intelligent identification model designed in a customized structure and multiple items of basic information fully and comprehensively selected; therefore, the technical problem is solved.

The invention discloses a material electromagnetic parameter testing system and method. The system comprises a product conveying device, a material testing device and a control device. The product conveying device comprises a first conveying module and a second conveying module; the first conveying module sucks a material plate from a discharging area and places the material plate at a preset detection position of the second conveying module; the second conveying module is arranged in the center of the material testing device and used for adjusting the material plate placed at the preset detection position to a detection posture and moving the material plate into the material testing device for electromagnetic testing; the material testing device comprises a plurality of pairs of testing antennas with different testing frequencies; the control device is used for controlling the product conveying device to convey the material plate and controlling the material testing device to test the material plate to obtain the electromagnetic parameter of the material plate, the full-automatic electromagnetic parameter testing can be realized, and the testing efficiency and the testing precision are improved.

The invention relates to the field of hearing aid anti-electromagnetic, in particular to a hearing aid anti-electromagnetic test method and system, and the system comprises a test system which comprises a hardware platform, a software platform and a data transmission end. The hardware platform comprises a signal generator, an electromagnetic interference source and data acquisition and processing equipment; the software platform comprises a data acquisition layer, a data processing layer, a business logic layer and a user interface layer; the system adopts a modular design, each component can be flexibly combined and expanded to adapt to changes of different test requirements, a traditional test system is often fixed and is not easy to expand, automation of a test process is realized through a software system, manual intervention is reduced, the test efficiency and accuracy are improved, and the system has real-time data processing capability and is suitable for popularization and application. Test data can be analyzed in real time and a result can be given, while a traditional test system usually needs to carry out data analysis and result evaluation after a test is finished, and the system is integrated with an intelligent diagnosis module.

This application discloses a method, apparatus, processor, and storage medium for testing electromagnetic radiation from a vehicle. The method includes: acquiring electromagnetic radiation data and electrical waveform data generated by the vehicle under the influence of disturbance noise applied by a disturbance generator in the vehicle's test environment, wherein the disturbance generator is deployed in the test apparatus; correlating the electromagnetic radiation data and electrical waveform data to obtain time-correlation data, wherein the time-correlation data is used to represent the correlation between the electromagnetic radiation data and electrical waveform data in the time dimension; and performing electromagnetic testing on the vehicle based on the time-correlation data to obtain electromagnetic test results, wherein the electromagnetic test results are used to represent the relationship between the electromagnetic radiation state of the vehicle under steady-state and transient operating conditions and the normal or abnormal radiation state. This application solves the technical problem of low accuracy in electromagnetic radiation testing of vehicles.

The application discloses a full-system amplitude-phase calibration method and device for a multi-frequency-band common-aperture array, and relates to the technical field of electromagnetic testing and antenna array. The method comprises the following steps: constructing a full-link amplitude-phase error model; deploying an internal multi-frequency calibration probe array; exciting and collecting full-link amplitude-phase data in a frequency band; eliminating cross-frequency-band interference and extracting errors through a frequency band decoupling algorithm; generating calibration weights and completing real-time amplitude-phase correction. The device comprises a multi-frequency-band common-aperture array, an internal calibration probe array, a distributed collection unit, an amplitude-phase adjustment module and a main control module. The application realizes full-link error compensation from a radio frequency front end to a radiation end, suppresses frequency band coupling interference, and has the advantages of high precision, online calibration, adaptation to large-scale arrays and the like, and can be directly integrated into an ultra-wideband plane wave synthesis system and an electromagnetic testing system.

The present invention relates to the technical field of electromagnetic testing. Disclosed are an electromagnetic interference detection apparatus and a detection method, the electromagnetic interference detection apparatus comprising a work platform, a wire winding mechanism, and a driving mechanism for driving the wire winding mechanism to move in the axial direction of a power cord, wherein the work platform is provided with a clamping mechanism for fixing a power cord to be tested; the wire winding mechanism comprises a moving frame, a first drive electric motor, and a sleeve configured to be coaxially sleeved on the power cord; the first drive electric motor is fixedly arranged on the moving frame; an output shaft of the first drive electric motor is fixedly provided with a driving gear, and the axial direction of the output shaft is parallel to that of the sleeve, the driving gear meshing with a ring gear at one end of the sleeve; and the side wall of the sleeve is provided with a wire passage hole, through which a conductive wire to be wound around the power cord can pass. Automated winding of the conductive wire around the power cord is realized, thereby greatly improving work efficiency, and reducing the complexity and errors in manual operations.

The invention relates to the technical field of electromagnetic testing, in particular to a complex electromagnetic environment generation method based on multi-source data fusion, and the method comprises the steps: carrying out the preprocessing of multi-source electromagnetic data collected by an unmanned plane, so as to output a fusion feature set capable of reflecting an electromagnetic situation; inputting the fusion feature set into an initial model for training to obtain an electromagnetic environment generation model, inputting a preset scene condition into the electromagnetic environment generation model to generate an electromagnetic environment sample, and optimizing the electromagnetic environment generation model according to the electromagnetic environment sample and an actual scene condition; determining whether the conditional constraint weight of the electromagnetic environment sample needs to be increased or not; determining whether a field uniformity correction coefficient generated by the electromagnetic environment needs to be increased; and determining a multi-source electromagnetic data transmission frequency hopping rate based on the multi-source electromagnetic data signal-to-noise ratio. According to the invention, the generation authenticity of the complex electromagnetic environment is improved.

The invention provides an electromagnetic safety restoring force digital twinning training method and system, and the method comprises the steps: constructing a test twinning space, determining a test equipment group based on electromagnetic test data, and associating real interference data; determining an interference dimension based on the device attribute of each test device in the test device group, and generating false interference data according to the interference dimension; performing state updating on the test equipment according to the real interference data to generate actual data, and directionally replacing the operation data of the corresponding dimension based on false interference data to generate false data; the calling information of the training end to the auxiliary plug-ins is collected, the misunderstanding guidance data is generated according to the calling information and the comparison information of the actual data and the false data, the auxiliary plug-ins are in one-to-one correspondence with the operation data of each dimension, the real interference data and the false interference data can be fused, the training complexity is improved, and the training efficiency is improved. Therefore, the handling efficiency of the operation and maintenance personnel on the electromagnetic safety event is improved.

The invention belongs to the technical field of low-scattering electromagnetic testing, solves the problem of functional requirements of bearing, attitude adjustment, power supply of an active target, control, cooling and the like, and discloses a heavy-load two-dimensional rotating top with an active RCS (radar cross section) test, which comprises a rotating top cylinder, a pitching assembly and an orientation assembly are arranged in the rotating top cylinder, and an axial through central channel is formed in the rotating top cylinder. The pitching assembly and the orientation assembly are arranged on the two sides or in the circumferential direction of the center channel. The pitching assembly is connected with the lower connecting base, a connecting base channel communicates with a center channel of the top rotating cylinder, the orientation assembly drives the top rotating shell to rotate, and the connector assembly is arranged at the top end of the top rotating cylinder. The multi-stage speed reduction and screw transmission technology is adopted, high bearing capacity and high-precision motion characteristics are achieved, and the functions of power supply, liquid supply, signal transmission and the like are integrated through the design of the hollow structure and the interface board.

The application discloses a high-low temperature environment electromagnetic compatibility test method, comprising the following steps: S1, placing a device to be tested in an environment simulation device of an anechoic chamber; S2, a system controller controls the environment simulation device to adjust the temperature of a sealed cavity in the environment simulation device to a temperature to be measured; S3, the system controller controls an electromagnetic test device to start, the electromagnetic test device performs EMC test on the device, and saves an EMC test value in a database; and S4, repeating S2-S3 until the device to be tested is subjected to EMC test at all the temperatures to be measured. The application adopts a mode of arranging an environment simulation device in an anechoic chamber to perform high-low temperature test, does not damage the original anechoic chamber, and does not reduce the service life and the original test feasibility of the anechoic chamber. The high-low temperature environment electromagnetic compatibility comprehensive test system of the application performs EMC test on the above-mentioned device under high-low temperature environment, and comprehensively tests the anti-interference performance of the device.