84results about "Permeability measurements" patented technology

The invention provides an intelligent material damage diagnosis method and system based on magnetic characteristic data fusion, and relates to the technical field of nondestructive testing, and the method comprises the following steps: collecting magnetic characteristic data by using a magnetic stress detection robot; performing multi-scale decomposition on the data to construct a magnetic domain evolution characteristic spectrum; inputting the characteristic spectrum into a composite neural network to extract a material damage characteristic matrix; constructing a fusion feature vector by using tensor dimensionality reduction and a multilayer belief transfer network; and realizing damage calculation through temperature field modulation and self-adaptive weight distribution to obtain the damage grade and the residual life. According to the invention, accurate diagnosis of the material damage in the welding seam area of the pressure vessel is realized.

The invention relates to the technical field of bearing detection, and discloses a bearing fault diagnosis method and system, and the system comprises the steps that an acquisition unit collects magnetic signals of a to-be-detected bearing in a non-contact manner in the operation process of the to-be-detected bearing, and the magnetic signals specifically comprise magnetic flux density and magnetic conductivity; the preprocessing unit is used for preprocessing the acquired magnetic signals to form signal fragments to be analyzed; the first processing unit judges whether an early fault exists or not according to the preprocessed magnetic conductivity; the second processing unit extracts a fault discrimination feature vector based on Hilbert transform and wavelet packet reconstruction, inputs the fault discrimination feature vector into a historical discrimination database or a health state baseline model, and outputs a judgment result of a fault degree; the early warning unit determines an alarm level according to the fault degree and an early fault. According to the method, continuous sensing of multi-stage fault states is realized, and the recognition capability of early micro-damage such as fatigue cracks and local stripping is effectively improved.

The invention discloses a composite shielding material effect experiment data analysis method, and particularly relates to the field of material shielding effect analysis, and the method comprises the following steps: measuring key data such as dielectric constant, magnetic conductivity, conductivity and thickness of each layer of a composite shielding material through an electromagnetic performance measurement instrument; establishing an electromagnetic wave propagation model for describing propagation of electromagnetic waves in the multilayer medium based on a Maxwell equation, and defining boundary conditions of a test sample; time domain and frequency domain characteristics of an electromagnetic interference source are simulated through Fourier transform, and actual input interference is simulated. And analyzing the dynamic response of the electromagnetic wave propagation model under transient and steady-state interference signals to form an electromagnetic wave interference response propagation model. Through comparison with actual shielding effectiveness test data, model parameters are adjusted, and it is ensured that model calculation errors are within an acceptable range. A full-band shielding effectiveness prediction map of the composite shielding material is generated based on the model, and theoretical support is provided for material design and optimization.

The invention discloses an inductance material electromagnetic performance prediction method and system based on machine learning, and the method comprises the steps: collecting inductance performance index data, carrying out the data preprocessing of an inductance material performance index optimization data set, and carrying out the visualization of the data set, and obtaining the linear relation between the variables of the quantized inductance material performance index optimization data set. Through inductance material magnetic conductivity prediction, saturated magnetic field intensity prediction and inductance material electromagnetic performance prediction, inductance material electromagnetic performance characterization reference data are finally obtained. According to the method, the potential nonlinear relationship among the inductance raw materials is mined by utilizing the powerful calculation learning capability of the machine learning model, so that the raw material selection and formula design of inductance products with different specifications are accurately guided.

The invention relates to the field of fusion devices, and discloses an acceptance inspection method and device for a cold shield device, the cold shield device comprises a plurality of cold shield sectors, each cold shield sector comprises an outer panel, an inner panel and a connecting assembly, the outer panel is provided with a half window, and the half windows between partial adjacent two of the plurality of outer panels are arranged adjacently; the method comprises the following steps: mounting a plurality of window fixing plates on a test bracket; the half window of the outer panel is installed on the window fixing plate in a matched mode, and the half window, the inner panel and the connecting assembly are assembled to form a cold screen sector; and scanning the cold shield sector to obtain measurement data, comparing the measurement data with theoretical data of the theoretical model of the cold shield sector to obtain a comparison result, and determining whether the cold shield sector is qualified or not according to the comparison result. According to the invention, the supporting and stress states during real assembly can be simulated for the assembly of the cold shield fan section, and the quality control of the cold shield fan section in the manufacturing and acceptance handover process can be realized.

The invention relates to the technical field of grain detection, discloses a grain electromagnetic parameter measuring device and method, and aims at solving the problem that an existing electromagnetic parameter detecting method is poor in accuracy, and the scheme mainly comprises a temperature sensor, a coaxial transmission line structure, a vector network analyzer and a control module. The coaxial transmission line structure comprises a cylindrical inner conductor and a cylindrical outer conductor, the inner conductor is located on the central axis of the outer conductor, and a hollow structure is formed between the inner conductor and the outer conductor; the hollow structure is used for filling grain, the temperature sensor is used for detecting grain temperature, the vector network analyzer is used for calculating electromagnetic parameters of the grain according to amplitudes and phases of output electromagnetic wave signals and input electromagnetic wave signals, and the control module is used for constructing a mapping relation between the grain temperature and the electromagnetic parameters. The mapping relation is used for grain pile temperature detection; the radiuses of the inner conductor and the outer conductor satisfy impedance matching conditions. The accuracy of grain electromagnetic parameter measurement is improved, and the method is suitable for various grains.

The invention relates to the technical field of magnetic variable measurement, in particular to a nondestructive testing method and device for magnetic conductivity of flaky metal magnetic powder, and the method comprises the following steps: acquiring initial sensitivity obtained by detecting the flaky metal magnetic powder to be detected by a detection coil in an initial state, and if the initial sensitivity is less than a preset sensitivity threshold value, determining that the flaky metal magnetic powder to be detected is detected; if not, adjusting the initial number of turns according to the minimum coil number of turns increase value to obtain an adjusted number of turns until the correction sensitivity of the detection coil in the latest state is greater than or equal to a preset sensitivity threshold value, so as to improve the induction sensitivity of the detection coil to the inductance value of a small-size sample of flaky metal magnetic powder. Further, the accuracy degree of magnetic conductivity detection of the flaky metal magnetic powder is improved; and obtaining the damage probability of the to-be-detected flaky metal magnetic powder obtained in the process that the detection coil detects the to-be-detected flaky metal magnetic powder in the latest state, and adjusting the initial excitation current based on the damage probability to reduce the damage probability of the to-be-detected flaky metal magnetic powder in the detection process.

The invention relates to the technical field of low-temperature environment simulation and material characteristic test, in particular to a high-speed rail traction system fault diagnosis method based on electromagnetic parameter fusion, which is used for solving the problems of material electromagnetic characteristic test distortion and fault diagnosis algorithm verification deficiency in a high and cold environment. The method comprises the following steps: constructing a multi-physical field coupling test environment, simulating temperature cycle and humidity sudden change working conditions from-50 DEG C to + 80 DEG C, and synchronously acquiring dynamic parameters of resistivity, dielectric loss and magnetic conductivity; according to the method, the limitation of a traditional static test is broken through, the real representation of the material performance degradation rule is realized, a closed-loop verification system of laboratory and field data is constructed, and the performance of the material is verified. The accuracy and environmental adaptability of fault diagnosis in a high and cold environment are remarkably improved, and reliable guarantee is provided for safe operation of a traction system under an extreme working condition.

The application provides a kind of bar type magnetic core effective permeability low frequency distribution measurement method and device, it is related to low frequency fluctuation detection and application technical field.The method comprises: winding test coil on coil framework, the winding length of test coil is measured and the number of turns is recorded;Test magnetic core is inserted into different positions of test coil, and the inductance of test coil is measured when test magnetic core is in different positions;According to the relationship between permeability and inductance, the area average effective permeability of test magnetic core in different positions is calculated;Based on the preset algorithm, the effective permeability distribution function of test magnetic core is fitted;According to the effective permeability distribution function of test magnetic core, the effective permeability distribution function of the bar type iron-based nanocrystalline alloy magnetic core to be measured is obtained.The application can reduce the measurement error of magnetic core effective permeability, improve the modeling reliability, and obtain the effective permeability distribution function, so as to reduce repeated experiments and improve the modeling efficiency.

A sensor apparatus for determining and / or monitoring a process variable of a medium in a containment includes: a crystal body including at least one defect; a magnetic field system for producing a magnetic field in the region of the crystal body and in the region of the medium within the containment, wherein the crystal body and the magnetic field system are arrangeable from the outside at a wall of the containment; a detection unit for detecting a magnetic field-dependent, fluorescent signal from the crystal body, wherein the detection unit has an excitation unit for optical exciting of the defect and a detector for detecting the fluorescent signal; and an evaluation unit for ascertaining at least one piece of information concerning the process variable based on the fluorescent signal.

The present invention provides a method and system for intelligent diagnosis of material damage by magnetic characteristic data fusion, which relates to the field of nondestructive testing technology. The method includes using a magnetic stress detection robot to collect magnetic characteristic data; performing multi-scale decomposition on the data to construct a magnetic domain evolution feature spectrum; inputting the feature spectrum into a composite neuron network to extract a material damage feature matrix; constructing a fusion feature vector by using tensor dimensionality reduction and a multi-layer belief transfer network; and realizing damage calculation through temperature field modulation and adaptive weight allocation to obtain the damage level and remaining life. The present invention realizes the accurate diagnosis of material damage in the weld area of a pressure vessel.

This invention provides a method for constructing a magnetic property measurement system for magnetic materials based on an LLC resonant circuit, belonging to the field of switching converter technology. The measurement system includes: a DC power supply. V in Square wave generator, resonant capacitor C r Resonant inductor L r Magnetic ring, primary winding of magnetic ring L p Secondary winding of magnetic ring L s rectifier and filter capacitor C 0. Load L o And a power analyzer; wherein, the magnetic ring is made based on the magnetic material to be tested; wherein, a DC power supply V in Square wave generator, resonant capacitor C r and resonant inductor L r Connect sequentially and connect to the primary winding of the magnetic ring. L p resonant capacitor C r Resonant inductor L r and the primary winding of the magnetic ring L p excitation inductor L m Forming a resonant circuit; the rectifier is connected to the secondary winding of the magnetic ring. L s A filter capacitor is connected in parallel across the rectifier. C 0 and load L o A power analyzer is used to collect the primary-side current and secondary-side voltage of a magnetic ring to determine the magnetic characteristic parameters of the magnetic material under test. This invention can reduce the error in the measurement results of the magnetic characteristics of magnetic materials.

The application discloses a kind of anti DC bias magnetic methods and current transformers based on magnetic permeability feedback compensation, comprising: the magnetic permeability of current transformer core is acquired in real time by magnetic permeability measuring unit;According to the relationship model of magnetic permeability and DC component established in advance, the DC component of invading current transformer is determined based on the magnetic permeability acquired;DC bias compensation unit generates reverse DC counter-biasing according to the DC component determined on compensation winding.The application realizes real-time monitoring and dynamic compensation adjustment to the magnetization state of transformer core by introducing magnetic permeability measuring unit and magnetic permeability feedback control, compared with traditional open-loop compensation or simple current feedback, can more accurately judge the saturation degree of magnetic core, adjusts compensation strategy in time according to the change of magnetic core state, effectively avoids compensation lag or overcompensation problem, improves the adaptability and measurement stability of transformer in complex current environment.

The invention discloses an auxiliary device and method for rapidly determining three parameters of soft magnetic composite powder, and belongs to the technical field of soft magnetic material performance testing. The invention provides a simple device and method based on a medical injector and an insulated copper wire, aiming at solving the problems that a traditional testing method depends on complex equipment, steps are tedious, the cost is high and the efficiency is low. By measuring the inductance and the resistance of the coil and combining calculation of the size of an inner cavity of the injector and the length of a magnetic circuit, the quality factor, the effective magnetic conductivity and the direct-current bias of the soft magnetic powder can be quickly and accurately calculated. The device is simple in structure, mainly comprises an injector, an insulated copper wire, soft magnetic powder and an insulated rubber tape or transparent adhesive tape, and is convenient to operate and low in cost. The method is especially suitable for rapid quality detection of a production field and preliminary performance evaluation of a laboratory, can significantly improve the test efficiency and reduce the test cost, and has the advantages of simplicity, rapidness, low cost and high applicability.

The invention relates to the field of composite material electromagnetic parameter testing, in particular to a composite material electromagnetic parameter automatic testing system based on vector network analysis. The data acquisition module is used for acquiring electromagnetic characteristic parameters through the vector network analyzer; acquiring an environment temperature; analyzing an electromagnetic characteristic characterization value according to the electromagnetic characteristic parameters through a data analysis module; evaluating whether the electromagnetic parameter automatic test system meets the standard or not through a standard evaluation module; determining, by the compensation control module, a cause of non-compliance with the criteria based on the ambient temperature; and determining to start a test area temperature compensation device or determine whether to start an electromagnetic shielding device based on the reason that the test area does not accord with the standard. By analyzing the reason that the automatic test system does not meet the standard, the environment temperature is adjusted or the electromagnetic interference is eliminated according to the reason, so that the precision of the automatic test system for the electromagnetic parameters of the composite material based on vector network analysis is remarkably improved.

The present application proposes a method for optimizing a magnetic coupling coil, the method comprising: calculating the equivalent magnetic permeability of the magnetic coupling coil according to the air gap length of the magnetic coupling coil; calculating the effective cross-sectional area of ​​the magnetic coupling coil according to the equivalent magnetic permeability and the power of the magnetic coupling coil; calculating the number of secondary end turns of the magnetic coupling coil according to the effective cross-sectional area and the equivalent magnetic permeability; optimizing the magnetic coupling coil according to the number of secondary end turns. The present application calculates the average magnetic path length and the effective cross-sectional area of ​​the magnetic coupling coil according to the equivalent magnetic permeability and the power of the magnetic coupling coil, and calculates the number of secondary end turns of the magnetic coupling coil according to the effective cross-sectional area and the equivalent magnetic permeability; the parameters of the magnetic coupling coil can be reasonably configured, and energy can be effectively obtained from the power grid to provide a stable power supply for detection or communication equipment in the power grid, and the magnetic coupling coil can be made more reliable while meeting the power requirements.

This invention relates to a testing device for the magnetic properties of high-permeability materials under low-frequency weak magnetic environments, comprising: a coil assembly, a magnetic property tester, a magnetic shielding cylinder, and a host computer; the coil assembly is wound around the sample under test and connected to the magnetic property tester, and the sample under test with the coil assembly placed inside the magnetic shielding cylinder; the magnetic shielding cylinder provides a weak magnetic environment for the sample under test; the magnetic property tester is used to provide excitation current to the coil assembly and detect the induced voltage of the sample under test, and transmit the measured data to the host computer; the host computer is used to acquire the data measured by the magnetic property tester and plot the magnetization curve. The technical solution of this invention solves the problem that current magnetic property testing devices for magnetic materials cannot obtain the permeability of high-permeability materials under low-frequency weak magnetic environments, thereby improving the accuracy and precision of theoretical and simulation calculations of magnetic shielding devices and reducing the error between design and actual values.

The present invention relates to the field of data processing technology, and specifically to a method and system for online monitoring the inductance of an inductor device, comprising: determining the magnetic leakage ratio of the inductor device at the current moment based on the proportion of the core insertion length in the coil length at the current moment, combined with the minimum and maximum magnetic leakage ratios, then determining the effective change in the magnetic permeability of the core of the inductor device at the current moment, determining the effective total magnetic resistance of the electromagnetic device at the current moment based on the vacuum magnetic permeability, the coil length, the relative magnetic permeability and cross-sectional area of ​​the core, and the core insertion length at the current moment, combined with the effective change, and determining the true effective inductance of the inductor device at the current moment based on the effective total magnetic resistance and the number of coil turns, combined with the magnetic leakage ratio of the inductor device at the current moment. The present invention improves the accuracy of online monitoring of the inductance of the inductor device.

Provided herein is a magnetic permeability measuring method including measuring a measured permeability coefficient of the magnetic material using a measuring probe; setting an analysis model corresponding to a measurement condition, and calculating, using finite element analysis, a calculated permeability coefficient of the magnetic material in the analysis model and the magnetic permeability of the magnetic material corresponding to the calculated permeability coefficient; acquiring a first set including a plurality of pairs of real-parts and imaginary-parts of the magnetic permeability corresponding to a real-part of the calculated permeability coefficient that matches a real-part of the measured permeability coefficient; acquiring a second set including a plurality of pairs of real-parts and imaginary-parts of the magnetic permeability corresponding to an imaginary-part of the calculated permeability coefficient that matches an imaginary-part of the measured permeability coefficient; and determining the magnetic permeability whose real-part and imaginary-part match in the first and second sets.

The invention relates to a material magnetic permeability temperature stability testing device and method based on an atomic magnetometer, characterized in that the device comprises an atomic magnetometer, a magnetic material layer, a flexible heating coil, a temperature sensor, a simulated magnetic field coil, a magnetic shielding unit, a magnetic field control module, a temperature data acquisition module, a temperature control module, a magnetometer circuit acquisition control module, and a multifunctional host computer. The atomic magnetometer tests the magnetic shielding coefficient of the magnetic material layer. After the flexible heating coil heats the magnetic material layer to a specific temperature, the atomic magnetometer measures magnetic noise and incorporates the magnetic noise into the relationship between the shielding coefficient and the magnetic permeability to calculate the material magnetic permeability at different temperatures. The temperature stability of the material magnetic permeability is analyzed, which is conducive to in-situ measurement of the magnetic permeability temperature stability of the formed magnetic shielding barrel material. At the same time, the device can effectively avoid the problems of multiple measurements, the influence of the number of coil turns, and the inability to flexibly adjust the test voltage and frequency in traditional magnetic permeability testing methods.

The application provides a multi-coil incremental permeability dynamic detection probe and a yield strength detection method. The probe mode of the multi-coil is used to detect different positions of materials in different magnetization states at the same time. In the movement process, the mechanical properties of the materials can be quickly and efficiently predicted. Compared with the traditional static detection mode, the dynamic detection probe can be used for continuous detection, so as to improve the detection efficiency and realize the purpose of pipeline detection operation.

A method includes receiving, from a plurality of magnetic field receivers including magnetic sensors, data characterizing samples obtained by the plurality of magnetic field receivers, the samples of a combination of a first magnetic field and a second magnetic field resulting from interaction of the first magnetic field and an object; determining, using the received data, a polarizability index of the object, the polarizability index characterizing a magnetic polarizability property of the object; classifying, using the determined polarizability index, the object as threat or non-threat; and providing the classification. Related apparatus, systems, techniques, and articles are also described.

Provided is a measurement device for measuring the magnetic permeability and the dielectric constant of an electromagnetic material as an object to be measured. This measurement device for measuring the magnetic permeability and the dielectric constant of an object to be measured that is an electromagnetic material comprises: a probe in which a signal transmission line is formed, it being possible to position an object to be measured near or in contact with the signal transmission line; a magnetic field application part for applying a magnetic field to the object to be measured; a signal measuring instrument for measuring a signal transmitted through the signal transmission line in each of the presence and absence of placement of the object to be measured in the signal transmission line and the presence and absence of application of a magnetic field by the magnetic field application part; a magnetic permeability processing means for determining the magnetic permeability of the object to be measured on the basis of a signal transmitted through the signal transmission line in each of the presence and absence of application of a magnetic field by the magnetic field application part; and a dielectric constant processing means for determining the dielectric constant of the object to be measured on the basis of a signal transmitted through the signal transmission line in each of the presence and absence of placement of the object to be measured in the signal transmission line.

This application proposes a magnetic coupling coil optimization method. The method comprises: calculating an equivalent magnetic permeability of a magnetic coupling coil based on an air gap length of the magnetic coupling coil; calculating an effective cross-sectional area of the magnetic coupling coil based on the equivalent magnetic permeability and the power of the magnetic coupling coil; calculating a number of turns of the secondary winding of the magnetic coupling coil based on the effective cross-sectional area and the equivalent magnetic permeability; optimizing the magnetic coupling coil based on the number of turns of the secondary winding. The present application can reasonably configure the parameters of the magnetic coupling coil, effectively acquire energy from the power grid to provide stable power for detection or communication equipment in the power grid, and make the magnetic coupling coil more reliable while meeting the power demand.

The application discloses a current transformer measurement method, and particularly relates to the field of current transformer monitoring and measurement, which comprises the following steps: before the measurement of the current transformer starts, the nanocrystalline material made core of the current transformer is initially magnetized, and the core is brought to a saturation state through a magnetic field; a known alternating current signal is applied to the current transformer through a primary winding, the alternating current generates an alternating magnetic field in the core, and the magnetic flux in the core changes; after the current transformer senses the change of the current, an induced electromotive force is generated through a secondary winding, and a measurement value is represented; the induced current in the secondary winding and the induced current of the primary winding change in a fixed proportional relationship, and the induced current is transmitted to a measurement device for collection. Through real-time monitoring of the external mechanical stress density and the core magnetic permeability decline rate, the system can timely judge and respond to the high stress state, and ensure the working stability and measurement accuracy of the current transformer under the high stress condition.

The present invention relates to the technical field of magnetic variable measurement, and particularly to a method and device for nondestructive testing of the magnetic permeability of flaky metal magnetic powder. The method comprises obtaining an initial sensitivity obtained by a detection coil in an initial state when detecting the flaky metal magnetic powder to be tested. If the initial sensitivity is less than a preset sensitivity threshold, the initial number of turns is adjusted according to a minimum coil turn increase value to obtain an adjusted number of turns until the corrected sensitivity obtained by the detection coil in the latest state is greater than or equal to the preset sensitivity threshold, thereby improving the inductive sensitivity of the detection coil to the inductance value of a small-sized sample such as the flaky metal magnetic powder, and thereby improving the accuracy of the magnetic permeability testing of the flaky metal magnetic powder. The method also comprises obtaining a damage probability of the flaky metal magnetic powder to be tested obtained during the detection process when the detection coil is in the latest state, and adjusting the initial excitation current based on the damage probability to reduce the damage probability of the flaky metal magnetic powder to be tested during the detection process.

The invention discloses a method and a system for measuring the magnetic conductivity of a flat plate. The method comprises the following steps: placing a soft magnetic material flat plate in a spatial range of a uniform magnetic field; for a plurality of measurement points in the spatial range, respectively measuring magnetic field intensities of the soft magnetic material flat plate before and after the flat plate is placed; establishing a magnetic field distribution model around the soft magnetic material flat plate, and obtaining theoretical magnetic field intensities of the plurality of measurement points; calculating the theoretical magnetic induction intensity and the actual magnetic induction intensity of the measuring point after the soft magnetic material flat plate is placed, and establishing a fitness function taking the magnetic conductivity of the flat plate as an unknown quantity; and carrying out optimization solution by taking the minimum fitness function as a target to obtain the magnetic conductivity of the flat plate. According to the invention, a flat plate sample piece for actual installation of a shielding body is tested, the magnetic conductivity of a shielding layer structure can be directly obtained, and the magnetic characteristics of a soft magnetic material flat plate can be truly reflected; the process of measuring and obtaining the magnetic conductivity is simple and rapid, data reading and detection can be completed after a to-be-tested flat plate is placed, and the testing efficiency is high.

A sensor device (1) comprises: a magnetic material core part (2) capable of forming a closed magnetic circuit including two outer leg parts; two coil parts (L1 and L2) that are respectively formed by winding wires around the two outer leg parts and each generate a signal magnetic flux according to an alternating-current signal applied; a magnetic flux generation unit that generates a bias magnetic flux so that the bias magnetic flux circulates through the closed magnetic circuit; an alternating-current signal circuit (3) for applying an alternating-current signal to each of the two coil parts so that a signal magnetic flux in the same direction as the bias magnetic flux is generated in each of the outer leg parts; and signal output terminals (V1 and V2) for outputting detection signals that allow for detection of voltage balance between the two coil parts (L1 and L2) that changes according to an external magnetic field acting on the magnetic material core part (2).

The present invention relates to the field of grain detection technology and discloses a device and method for measuring grain electromagnetic parameters. This device aims to address the poor accuracy of existing electromagnetic parameter detection methods. The solution primarily comprises a temperature sensor, a coaxial transmission line structure, a vector network analyzer, and a control module. The coaxial transmission line structure includes a cylindrical inner conductor and an outer conductor, the inner conductor being located on the central axis of the outer conductor, with a hollow structure formed between the inner and outer conductors. The hollow structure is used to hold grain, the temperature sensor is used to detect the grain temperature, the vector network analyzer is used to calculate the grain's electromagnetic parameters based on the amplitude and phase of the output and input electromagnetic wave signals, and the control module is used to establish a mapping relationship between the grain temperature and the electromagnetic parameters, which is used to detect the grain pile temperature. The radii of the inner and outer conductors meet impedance matching conditions. The present invention improves the accuracy of grain electromagnetic parameter measurement and is applicable to various types of grain.

The present invention provides a system and method for measuring the electromagnetic parameters of materials in a strong microwave electric field environment based on parallel strips, belonging to the field of microwave testing technology. The present invention innovatively designs a double-sided parallel strip with a slotted structure, and constructs a measurement system under strong microwave electric field loading based on the double-sided parallel strip. The test sample is tested by separating the test frequency from the strong microwave electric field frequency, and the reflection coefficient and transmission coefficient of the test sample are obtained, thereby calculating the electromagnetic parameters of the material to be tested under the microwave strong field loading environment. The measurement system of the present invention realizes the decoupling of the test frequency and the strong microwave electric field frequency, that is, the test frequency is no longer determined by the setting of the microwave electric field frequency, thereby meeting the testing requirements at different frequencies.