572 results about "Magnetic measurements" patented technology

The invention discloses a single-end open type high-performance magnetic shielding system and a design method thereof. The system is formed by combining a passive magnetic shielding subsystem and an active magnetic compensation subsystem. The passive magnetic shielding subsystem is formed by alternately nesting single-end open type high-permeability and high-conductivity metal barrels, and the structure is beneficial to synchronously improving the shielding capability for full-band magnetic interference; the active magnetic compensation subsystem is composed of a group of axial nonlinear gradient coils, two groups of radial nonlinear gradient coils with orthogonal magnetic fields and a magnetic compensation control circuit, and three groups of magnetic compensation coil windings are obtained based on specific nonlinear distributed magnetic interference reverse design in a single-end open type magnetic shielding barrel; different from conventional shimming and linear gradient coils, accurate compensation of magnetic interference in a working area in the barrel can be realized. According to the invention, the shielding capability of the single-end open type magnetic shielding system is improved, and a required near-zero magnetic environment is provided for extremely weak magnetic measurement.

The present invention relates to the technical field of measuring magnetic variables, and specifically to a bracket and multi-array control method for adjustable TMR and electromagnetic measurement sensors. The bracket body of the present invention includes a number of fan-shaped bottom plates made of SMC composite materials, and adjacent fan-shaped bottom plates are spliced ​​together to form a complete annular structure; the adjustment mechanism includes a ball screw and a motor, and the ball screw is installed on the track of the bracket body; the electromagnetic measurement sensor includes a carrier and an electromagnetic measurement unit installed on the carrier; the bracket body and the electromagnetic measurement sensor adopt an upper and lower layered layout, and the probe electromagnetic measurement sensor is independently adjusted by the adjustment mechanism, and arranged in an array along the track, thereby forming an adjustable array sensor together. By improving the adjustable bracket structure, the electromagnetic measurement sensor can be flexibly arranged and independently adjusted in an array on the bracket, so as to more accurately detect magnetic field signals at different positions and directions, and improve the efficiency and accuracy of magnetic field detection.

The invention belongs to the technical field of ground-space frequency domain electromagnetic detection, and relates to a ground-space frequency domain electromagnetic detection coil motion attitude error evaluation system and method, and the system comprises a motion execution unit which drives a three-component coil magnetic sensor to perform static deflection or periodic swing; the three-component magnetic measurement unit is used for acquiring ground-air electromagnetic three-component magnetic field data acquired by the three-component coil magnetic sensor; the attitude measurement unit is used for acquiring an initial attitude angle, an attitude angle after static deflection and an attitude angle of periodic swing of the three-component coil magnetic sensor; and the processor is used for calculating a magnetic field amplitude attitude error and a magnetic field phase attitude error of the three-component coil magnetic sensor under different static deflections or periodic swings according to the initial attitude angle, the attitude angle after static deflection, the attitude angle after periodic swing and the ground-air electromagnetic three-component magnetic field data. Interference of static deflection and periodic swing amplitude and frequency parameters on electromagnetic data can be quantitatively studied.

The invention discloses an underground target imaging method and imaging system based on variable scale deep learning, and belongs to the technical field of geophysical exploration, and the method comprises the following steps: S1, building a multi-scale magnetic survey data set; s2, constructing a UNet + +-based variable-scale deep learning network model, and performing feature fusion on pooled information and information subjected to split convolution by a dynamic information fusion layer so as to adapt to input data of any size and make up for information loss caused by pooling; s3, designing a multi-constraint loss function formed by mean square error and loss weighting; s4, migration learning is adopted, model parameters trained in a fixed size serve as initial weights, progressive training of multi-size data is achieved by freezing and fine tuning of decoder parameters, and finally the effectiveness of the whole network model is verified according to a test set prediction effect, so that the universality and flexibility of the network are improved when data of different sizes are processed, and the network performance is improved. And large-size data features in a specific area can be quickly adapted.

In one embodiment, a method includes accessing a first series of first magnetic values that represents a first magnetic recording that includes a first set of first magnetic measurements. Each of the first magnetic values represents one of the first magnetic measurements. The method includes accessing a second series of second magnetic values that represents a second magnetic recording that includes a second set of second magnetic measurements. Each of the second magnetic values represents one of the second magnetic measurements. The method includes approximately aligning the first and second series with each other; calculating a difference between the first and second series as aligned with each other; and determining a similarity between the first and second series based on the difference.

The invention discloses a radius-adjustable compensation anti-magnetic flux transient electromagnetic measurement device and method, and relates to the field of transient electromagnetic exploration, and the device comprises a transmitter, a receiver, a transmitting coil, a compensation coil and a receiving coil. The transmitting coil and the compensating coil are connected in series and are connected with two poles of the transmitter, and the receiver is connected with two ends of the receiving coil; the compensating coil is arranged on the outer side of the receiving coil; the transmitting coil is arranged on the outer side of the compensating coil; an adjustable buckle is arranged on the compensation coil; the adjustable buckle is used for adjusting the radius of the compensation coil. The reverse magnetic flux is adjusted by adjusting the radius of the compensation coil, so that primary field influences such as self-inductance and mutual inductance are effectively eliminated, more accurate secondary field response signals are obtained, and more reliable transient electromagnetic exploration data can be obtained.

The invention relates to a miniaturized closed-loop FID scalar atom magnetometer and an implementation method thereof, and belongs to the field of atom magnetic measurement. According to the method, the closed-loop working mode of the FID magnetometer is realized by utilizing a self-made electronics system, the modulation frequency of pumping light is corrected in real time, so that the magnetometer still keeps high sensitivity under a large magnetic field change rate, and the performance restriction between the dynamic range and the sensitivity of an open-loop FID magnetometer is broken through. The interaction between the self-made frequency meter and the time sequence control system is the core component of the closed loop of the magnetometer system. The device can measure a magnetic field with a large change rate at a high speed, is high in sensitivity and accuracy, and plays an important role in field magnetic measurement application.

The invention discloses a space magnetic field automatic measurement control system and method, and relates to the technical field of magnetic field measurement. The system comprises a guide rail erected on the inner side of the annular coil and arranged in the axial direction of the annular coil; the measuring device comprises an omnibearing measuring assembly and a supporting part used for supporting the omnibearing measuring assembly. One part of the supporting part is assembled in the guide rail, and the omnibearing measurement assembly comprises a magnetic measurement sensor, a radial driving module, an angular driving module and an axial driving module and is used for measuring magnetic field data of any radial position, any angular direction and any axial position in the annular coil; and the control device is used for respectively controlling the radial driving module, the angular driving module and the axial driving module so as to drive the magnetic measurement sensor to measure magnetic field data at a specified position. According to the invention, precise positioning of a three-dimensional space magnetic field, space omnibearing measurement and space omnibearing automatic control are realized.

The invention discloses a geomagnetic matching navigation algorithm based on an improved ant colony algorithm, and belongs to the field of geomagnetic navigation, control and guidance. The algorithm is implemented by the following steps: acquiring initial position information, detecting a magnetic measurement value of data by a geomagnetic sensor, and resolving a magnetic course angle; initializing parameters of the ant colony algorithm; putting the ant at an initial position, and transferring the ant to a next node according to a state transition probability formula until the ant reaches a magnetic measurement sequence; calculating and recording a global similarity measurement function of each ant, and updating pheromones; when the maximum number of iterations is reached, the optimal ant path is output, and the optimal geomagnetic navigation trajectory can be obtained. According to the method, approaching to the optimal solution is realized by utilizing the search randomness and positive feedback behavior of the ant colony algorithm, the optimal track is obtained through the algorithm, and the improvement of the geomagnetic navigation matching precision is realized.

The invention discloses an ultrahigh-sensitivity three-axis closed-loop spin exchange relaxation-free atom magnetometer, which expands the ultrahigh-sensitivity measurement capability of the atom magnetometer to three axes based on parameter modulation optimization and double detection light, fully inhibits transverse spin relaxation introduced by a modulation magnetic field, provides more high-quality information for weak magnetic measurement, and improves the measurement accuracy. Based on decoupled magnetic field information, a three-axis magnetic field sensitive to an atomic ensemble is locked to zero in real time, and closed-loop feedback quantity is used as magnetic field measurement information, so that the problems of nonlinear offset of a magnetometer calibration coefficient and cross-axis coupling crosstalk caused by magnetic field drift are fundamentally inhibited; the high anti-interference capability of the atom magnetometer in a complex magnetic field environment is enhanced, long-time stable measurement and magnetic field measurement precision of the atom magnetometer are guaranteed, sub-fT-level sensitivity and pT-level precision can be achieved on transverse double axes, and the atom magnetometer is suitable for the fields of extremely weak magnetic measurement testing, biomedical weak magnetic imaging and the like.

The invention relates to the technical field of quantum precision measurement, and provides a quantum magnetometer which comprises a solid-state spinning color center probe, a microwave module, a laser module, a photoelectric detection module, a lock-in amplification module, a PID module and a data processing module. According to the scheme, an ODMR sweep frequency spectrum line does not need to be drawn when the magnetic field is measured every time, tracking of the changing magnetic resonance frequency can be rapidly achieved through comparison of the target data and the demodulation result, the time for obtaining the new magnetic resonance frequency is greatly shortened, and the magnetic measurement efficiency of the quantum magnetometer is improved.

The invention discloses an underground fluxgate sensor signal processing method, which comprises the following steps of: extracting a magnetic field voltage signal mainly comprising a second harmonic component by adopting a signal detection circuit, and further removing other harmonic components through a digital phase-sensitive rectification and smooth filtering algorithm to realize effective extraction of the magnetic field signal. The second harmonic extraction effect of the phase-sensitive rectification algorithm is verified through a time sequence simulation result, and an open-loop fluxgate sensor designed based on a second harmonic method is experimented. Compared with other types of fluxgate signal detection methods, the second harmonic method effectively improves key performance such as resolution and linearity of the sensor, and the fluxgate sensor designed based on the second harmonic method can realize detection and effective modulation of a detected magnetic field signal and shows a relatively high magnetic measurement level.

A wearable electronic device including a magnetic strap is provided. The wearable electronic device includes a communication module, a geomagnetic sensor, a motion sensor, memory storing one or more computer programs, and one or more processors communicatively coupled to the communication module, the geomagnetic sensor, the motion sensor, and the memory, wherein one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the wearable electronic device collect geomagnetic measurement values collected using the geomagnetic sensor, determine whether to update a reference magnetic field stored in the memory on the basis of offset update information of the geomagnetic sensor, when updating the reference magnetic field, designate, as reference data, geomagnetic measurement values satisfying a first condition collected within the effective time of the reference magnetic field, a second condition for collecting of magnetic field strengths within an average error range, and a third condition collected within a movement range through the motion sensor, and update the reference magnetic field based on the designated reference data.

The invention discloses a marine geological profile rapid imaging and stratigraphic structure inversion system and a marine geological profile rapid imaging and stratigraphic structure inversion method. Comprising a multi-source marine geological data synchronous acquisition module, an acquisition signal noise reduction and space-time registration module, a stratum interface initial positioning and feature enhancement module, a multi-scale geological section rapid imaging module, a stratum physical parameter inversion initialization module, a constraint stratum structure inversion optimization module and an inversion result verification and visual output module. According to the invention, through GPS and Beidou synchronization and Kalman registration, the problem of spatial-temporal dislocation of multi-source data is solved, and deep fusion of sound wave, gravity and magnetic survey data is realized; based on self-adaptive wavelet threshold noise reduction, effective signals are reserved, and meanwhile, marine environment noise interference is greatly reduced; the multi-scale fusion algorithm gives consideration to shallow details and deep structures, and meets the requirements of different exploration targets.

The invention relates to a flexible measuring device for direct current large current measurement. The flexible measuring device comprises an integrated flexible non-contact current probe, a signal conditioning circuit and a signal processing unit, the integrated flexible non-contact current probe comprises a flexible magnetic core, and a magnetic measuring element and a temperature measuring element are integrated in the flexible magnetic core. After an output signal of the integrated flexible non-contact current probe passes through the signal processing unit, an analog signal in linear relation with a to-be-detected current and a digital signal of the to-be-detected current are output; the invention has the advantages of high precision, wide frequency band, low cost, excellent sensitivity and anti-interference capability, and improved measurement precision.

The invention relates to the technical field of electromagnetic measurement, and provides a hybrid magnetic array current sensor and a construction method. The hybrid magnetic array current sensor comprises a TMR array unit used for converting sensed current magnetic field change into an electric signal to obtain first current data; the quantum current sensing unit is used for converting the sensed quantum state signal change into an electric signal to obtain second current data; the data acquisition unit is used for acquiring the temperature of the TMR array and the output voltage of the corresponding temperature under the reference magnetic field; the data fusion unit is used for obtaining a sensitivity drift coefficient based on the temperature of the TMR array and the output voltage of the corresponding temperature under the reference magnetic field; compensating the first current data according to the sensitivity drift coefficient to obtain compensated first current data; and fusing the compensated first current data and the compensated second current data to obtain fused current data.

The invention discloses a superconducting magnet device and a vector magnetic field loading method. The method comprises the following steps: step 1, determining the size and the direction of a vector magnetic field; the superconducting magnet device and the vector magnetic field loading method are provided. Under the same working magnetic field, the structure space is smaller, the magnetic field utilization rate is higher, the manufacturing cost can be remarkably reduced, meanwhile, the uniformity of the magnetic fields provided by the X coil and the Y coil is higher, meanwhile, the ultra-low vibration performance is achieved under the high magnetic field, the optical or magnetic measurement requirement with the very high vibration requirement can be met, and the application prospect is wide. The superconducting coil is cooled by using the flexible cold conduction belt, the vibration of the superconducting coil can be effectively reduced, the vibration stability of a magnetic field is improved, 0.5-1% of current is overshot when the magnetic field is loaded, and then the current is adjusted to be reduced to a target magnetic field, so that the magnetic field can be quickly stabilized, and the drift effect of the magnetic field is reduced.

The invention provides a satellite magnetic measurement data downward continuation method, device and equipment and a medium, and the method comprises the steps: inputting observation data, and converting the observation data obtained during satellite in-orbit measurement from a spherical coordinate system to a rectangular coordinate system; determining a model calculation domain, and generating a series of configuration points in the model calculation domain; normalizing observation data position coordinates, configuration point position coordinates and magnetic field three-component data under the rectangular coordinate system to serve as training data; inputting observation data position coordinates and configuration point position coordinates under the rectangular coordinate system into a neural network model, constructing a loss function based on observation data fitting errors and Laplacian equation physical constraints, and training the neural network model; and according to application requirements, generating a target position coordinate on a target continuation plane or space, inputting the target position coordinate into the trained neural network model, obtaining magnetic field three-component data at the target position coordinate, and realizing high-precision downward continuation.

The invention provides a spacecraft and a product magnetic field measurement method thereof, electronic equipment and a storage medium, and the method comprises the steps: arranging a product magnetometer sensor and a background magnetometer sensor in a test region, and taking background measurement values of first background magnetic field data and second background magnetic field data at the same moment in each direction as input; fitting coefficients of background measured values and product measured values at the same moment in each direction are obtained through linear regression, a linear regression equation in each direction is constructed, background magnetic field interference is calculated according to the linear regression equations, the background magnetic field interference is eliminated from product magnetic field data, and the real magnetic induction intensity of the spacecraft and the product of the spacecraft is obtained. And calculating the magnetic moment of the spacecraft and the product thereof according to the real magnetic induction intensity. Based on the above mode, the influence of environmental fluctuation on the magnetic measurement of the spacecraft is reduced, and the purpose of accurately calculating the magnetic moment of the spacecraft and the product thereof is achieved.

The invention discloses a prospecting method and system based on air-ground-well three-dimensional geophysical exploration, and relates to the field of geological mineral exploration. The method comprises the specific steps that large-area high-resolution aviation gravity and magnetic detection is carried out according to existing geological data of a research area, aviation gravity and magnetic data are acquired, and a prospecting prospective area is delineated; in the prospecting distant view area, ground gravity and magnetic measurement is carried out, ground measurement data are obtained, the ground measurement data are processed and explained, aeronautical geophysical prospecting abnormity is verified, the occurrence state of an ore body is preliminarily deduced, and a prospecting target area is delineated; in the prospecting target area, drilling verification holes are formed, logging is carried out, drilling information is obtained, and air-ground-well joint inversion is carried out based on the aviation gravity and magnetic data, the ground measurement data and the drilling data; and carrying out constrained three-dimensional geophysical-geological modeling based on an inversion result, and predicting the position, the form and the scale of mineral resources in the research area. According to the method, fine exploration of mineral resources is realized by fully utilizing the characteristics of air-ground-well three-dimensional geophysical data.

The present disclosure relates to methods, systems, and apparatus, including computer programs encoded on computer storage media, for denoising magnetic measurements. An example method includes obtaining, using a plurality of magnetometers of a magnetically unshielded device, noisy magnetic measurement data of a magnetic field at least partially caused by an organ of a subject; obtaining, using one or more inertial measurement units (IMUs) of the magnetically unshielded device, a motional measurement of the plurality of magnetometers; determining cleaned magnetic field data based at least in part on the noisy magnetic measurement data and the motional measurement data; and taking an action based at least in part on the cleaned magnetic field data.

The invention relates to the field of quantum measurement, and provides a CPT magnetometer magnetic measurement signal-to-noise ratio improving method and device based on a differential EIT-EIA signal. The CPT magnetometer solves the problem that a traditional CPT magnetometer is low in magnetic measurement signal-to-noise ratio due to the influence of environment temperature noise, laser stability and atomic gas chamber buffer gas. According to the main scheme, the CPT magnetometer comprises a laser generation module, a reference correction module, a differential detection module, a non-magnetic heating module and a signal processing module. The laser generation module generates reference / measurement double beams through the laser and the polarization regulation and control assembly; the reference correction module performs polarization conversion and optical path regulation and control on the reference light; the differential detection module divides the measurement light into two paths by adopting polarization beam splitting, the first path is subjected to polarization state conversion through an interference light path after frequency modulation, the second path is converted into circularly polarized light after optical fiber transmission, the two paths of light are coupled and then enter an atomic gas chamber for interaction, and differential detection is realized through a polarization beam splitting detector; and the non-magnetic heating module accurately controls the temperature of the air chamber by using a non-contact photo-thermal conversion technology.

The invention relates to the technical field of electromagnetic measurement, and discloses a measurement unit stabilization method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining three-dimensional displacement trajectory data in real time, and building a motion error compensation model containing a mechanical vibration direction vector and a phase offset; on the basis of asymmetric magnetic pole distribution, combined with phase difference calculation of a magnetic circuit gradient direction vector and a mechanical vibration direction vector, a closed loop current orthogonal to the mechanical vibration direction vector is generated on an interface to realize gradient isolation; based on a multi-branch common-mode suppression mechanism, an interference signal reaches a preset attenuation amplitude before a loop is closed through combination of a magnetic core impedance matching characteristic and an eddy current effect; and performing dynamic matching based on the displacement parameter and an electromagnetic interference attenuation result, adjusting a magnetic pole inclination angle in real time, and forming a closed-loop control path of magnetic field gradient compensation and mechanical vibration suppression. According to the invention, the stability and anti-interference capability of the measuring unit under severe working conditions can be improved.

A magnetic shielding barrel noise floor evaluation method based on cross-spectrum analysis comprises the steps of data acquisition, simultaneous acquisition of noise data at the central position of a magnetic shielding barrel by using two independent atom magnetometers, windowing processing of discretized noise data of two channels by using a Hanning window, and reduction of near side lobe leakage. The method comprises the following steps: windowing two-channel data, performing Fourier transform on the windowed two-channel data to obtain frequency spectrum data, and finally performing frequency domain cross-correlation conjugate operation to calculate frequency domain characteristics of common-mode components of the two atom magnetometers and obtain a noise spectrum of the common-mode components of the two atom magnetometers, namely the noise floor of the magnetic shielding barrel. According to the method, common-mode components between the channels are extracted through cross-spectrum analysis operation, so that the noise floor of the magnetic shielding barrel or the noise floor of the magnetic shielding environment is evaluated, a metering type magnetometer with higher precision does not need to be researched, developed and used, the noise floor of the magnetic shielding barrel can be evaluated only through two magnetometers with lower sensitivity, the cost is lower, and the method is suitable for popularization and application. The equipment complexity of the extremely weak magnetic measurement device does not need to be increased, and the credibility is high.

The invention discloses a high-precision magnetic field data acquisition unit for aeromagnetic measurement and an acquisition method thereof, belongs to the technical field of aeromagnetic measurement, and solves the problems that the acquisition resolution of an aeromagnetic measurement magnetic field is low, the measurement precision is influenced by a power supply and electromagnetic interference, and the data processing and storage reliability is insufficient. According to the invention, a framework of'acquisition module + control module 'is adopted, the acquisition module realizes high-precision sampling through low-noise power supply, differential reference and analog front-end full-link conditioning, the control module completes error compensation and aeromagnetic compensation through a Zynq core, and the 1nT-level magnetic field acquisition precision is achieved by matching an anti-interference design and stable storage and transmission. The 1nT-level magnetic field acquisition precision in the aeromagnetic measurement process is achieved, the signal acquisition precision and stability are remarkably improved, electromagnetic and power interference is effectively inhibited, the reliability of data processing, storage and transmission is guaranteed, and the strict requirements of aeromagnetic measurement for precision and interference resistance are met.

A method of detecting presence or absence of a magnetic measurement probe at a measurement launch position in an electromagnetic coil of an ophthalmic instrument includes applying a temporary current pulse to the electromagnetic coil, detecting a counter-electromotive force voltage spike induced in the electromagnetic coil by the current pulse, evaluating a decay behavior of the counter-electromotive force voltage spike, and correlating the decay behavior of the counter-electromotive force voltage spike to presence or absence of the measurement probe at the measurement launch position.

The invention discloses a geomagnetic detection data optimization method, which comprises the following steps: generating a standard magnetic field by using a parallel ring, recording the magnetic field intensity as a ring mark measurement value, measuring the magnetic measurement intensity of the standard magnetic field by using a magnetic measurement probe based on the standard magnetic field, recording the magnetic measurement intensity as a ring measurement measurement value, and calculating the geomagnetic detection data based on the ring mark measurement value and the ring measurement measurement value. And obtaining a probe sensitivity correction coefficient of the magnetic measurement probe. And measuring the local magnetic field intensity of the location by using the magnetic probe, recording the local magnetic field intensity as a geometric measurement value, and combining with a reference standard value of the local magnetic field intensity to obtain the zero point deviation of the magnetic probe. The reference standard value of the local magnetic field intensity can be measured by using a higher-resolution instrument, and can also be published in related standards. And correcting the magnetic field measurement value by using the probe sensitivity correction factor and the zero deviation. According to different earth environment magnetic fields in different regions, the actual measurement value of the magnetic field can be correspondingly corrected.

A magnetic sensor according to the present invention is capable of measuring a small magnetic field with high accuracy by eliminating 1 / f noise. The magnetic sensor comprises a variable magnetic field detection unit that includes a Hall element having a magnetism-sensing direction giving rise to an anomalous Hall effect and a magnetic field control unit for controlling the Hall element so that a magnetic field having a component in a non-sensing direction orthogonal to the magnetism-sensing direction is generated in the Hall element. The magnetic sensor may further comprise a magnetic field calculation unit that calculates a measurement magnetic field on the basis of a first output and a second output, the first output including a measurement result obtained when the variable magnetic field detection unit measures a measurement magnetic field along the magnetism-sensing direction in a first state in which the direction of the magnetic field generated in the Hall element is not controlled by the magnetic field control unit, the second output including a measurement result obtained when the variable magnetic field detection unit measures the measurement magnetic field in a second state in which the direction of the magnetic field generated in the Hall element is controlled by the magnetic field control unit.

The invention provides a nuclear magnetism-resistivity combined measurement method for occurrence and migration of fluid in a rock core. The nuclear magnetism-resistivity combined measurement method comprises the steps that the rock core is dried and cooled to the room temperature; applying a specified confining pressure to the rock core and keeping the confining pressure constant; measuring background resistivity distribution of the rock core, and closing the resistivity analyzer; opening a liquid pump and a liquid inlet valve, and stopping pumping when the liquid level of the fluid is flush with the upper surface of the sponge; performing nuclear magnetic resonance imaging on the rock core, dividing the rock core into a plurality of observation sections in the longitudinal direction, and ensuring that at least one observation section is formed at the place with the conductivity probe; turning off the nuclear magnetic analysis system and the nuclear magnetic resonance imaging system, and measuring the resistivity of the rock core; nuclear magnetic measurement and resistivity measurement are carried out alternately; calculating a fluid migration rule in a spontaneous imbibition process to simulate a soaking process; and calculating a fluid migration rule in a gas driving process, and realizing nuclear magnetism-resistivity combined measurement of fluid occurrence and migration. The method can effectively avoid the interference of magnetic polarization on the resistivity test in the nuclear magnetic measurement process, and is high in measurement precision.

The invention discloses a rapid quantum magnetic measurement method and device based on multilayer sensing, and relates to the field of electrical quantum sensing. Comprising the steps of constructing a to-be-trained mixed distribution function model and a training set thereof; based on the training set, training the to-be-trained mixed distribution function model to obtain a mixed distribution function model; performing microwave frequency conversion scanning in a preset microwave frequency sweeping range, recording diamond NV color center fluorescence intensities corresponding to different microwave frequencies, and recording a point between a falling edge point of a peak deviating from the fluorescence intensity for the first time and a rising edge point of a valley deviating from the fluorescence intensity for the first time as an effective point; based on the microwave frequency value corresponding to the effective point and the mixed distribution function model, fitting to obtain a mixed distribution function of the to-be-measured magnetic field; and obtaining a frequency value of a trough position in the mixed distribution function of the to-be-measured magnetic field, and calculating the to-be-measured magnetic field intensity. The problem that the sampling rate of an existing optical detection magnetic resonance technology cannot meet the requirement of a power system for the high sampling rate is solved.