7 results about "Magnetic field imaging" patented technology

The application discloses a kind of sparse magnetic field data reconstruction method, system, equipment and storage medium, is related to magnetic field imaging and neural network image processing technical field, including by data acquisition department obtaining the initial sampling sparse magnetic field data of target detection area;Initial sampling sparse magnetic field data is input into sampling strategy department, generates sampling probability distribution graph, according to sampling probability distribution graph, obtains active sampling sparse magnetic field data;Active sampling sparse magnetic field data and initial sampling sparse magnetic field data are input into spatial superposition department, obtain final sampling sparse magnetic field data;Final sampling sparse magnetic field data is input into sparse data reconstruction module, and high-resolution reconstructed magnetic field data is output.The method described in the application is more good in improving sampling efficiency, optimizing reconstruction quality, reducing redundant data, enhancing reconstruction stability.

The application relates to the technical field of magnetic field imaging, in particular to a fast magnetic field imaging method based on diamond NV color center coherent regulation. In order to solve the problem that the existing diamond NV color center-based magnetic field imaging method is complex to operate, a new fast magnetic field imaging method based on diamond NV color center coherent regulation is provided, and the method comprises the following steps: 1) setting the frequency of pulsed microwaves; 2) setting a synchronous control sequence, collecting fluorescence intensities of diamond NV color centers at different positions in a two-dimensional space; 3) drawing Rabi curves about time-fluorescence intensity corresponding to the different positions of the diamond NV color centers in the two-dimensional space; 4) obtaining actual angular frequencies corresponding to each Rabi curve; 5) calculating the magnetic field strength variation of the diamond NV color centers at different positions in the two-dimensional space; and 6) realizing magnetic field imaging. The method realizes the target of fast magnetic field imaging.

This invention relates to the field of quantum imaging technology and proposes a digital phase-locked microwave magnetic field imaging system and method based on diamond NV centers. This invention images microwave fields based on the principle of power-broadened magnetic resonance. The system consists of multiple subsystems: an excitation optical path, an imaging optical path, an acquisition system, and a bias magnetic field. The excitation light is used to excite the diamond NV centers; the imaging optical path captures the fluorescence changes during microwave exposure; the acquisition system controls the testing system and analyzes data through a programmed host computer; and the bias magnetic field splits the resonance peaks to increase the bandwidth of the measured microwave field. Furthermore, imaging at different resolutions can be achieved by changing the objective lens. This invention enables non-destructive, non-invasive measurement of microstrip lines at room temperature using the NV center ensemble, thereby analyzing their operating status. In practical applications, this method offers advantages such as high sensitivity and rapid imaging.

The present application relates to the field of electromagnetic wave imaging technology, and specifically discloses an electromagnetic field imaging method, which mainly comprises: 1. constructing an imaging model; 2. Determining the element number N and the array pose based on the mode requirements for imaging and the actual size of the antenna, and calculating the circular array radius corresponding to each mode separately; 3. Controlling the system according to the array pose determined in step 2, the phase-shifting parameters of each element antenna, and the radius of the circular array; 4. Receiving the echoes corresponding to each pose with the receiving antenna, and forming a two-dimensional (2D) echo matrix based on the frequency and the mode; 5. Processing the echo signal to obtain a distance-azimuth 2D imaging result.

The application belongs to the technical field of data processing, and specifically discloses a power hardware defect detection method and system based on visual intelligence, wherein the method comprises a power hardware defect detection method based on visual intelligence, which comprises the following steps: obtaining an initial image data set containing a target power equipment surface magnetic field distribution image according to the magnetic field imaging data of a target power equipment component collected in a target environment; performing feature extraction on the initial image data set to obtain a feature vector set, wherein the feature vector set represents a magnetic field anomaly mode in the image; and comparing the feature vector set with a preset deviation standard, and if the comparison result shows that the deviation exceeds the standard, it is judged that the environment interference affects, and an interference correction parameter is obtained, wherein the interference correction parameter is used for adjusting the imaging setting; and the application aims to solve the problems of the influence of complex environment interference on the accuracy of magnetic field imaging data and the accurate classification of defect types in the prior art.

This invention provides a diamond magnetic field imaging device and method based on an irregularly shaped beam, belonging to the field of diamond thin-film magnetic imaging technology. It includes a linearly polarized light excitation unit, a scalar irregularly shaped beam modulation unit, a fluorescence collection and detection unit, and a data processing unit. The linearly polarized light excitation unit emits laser light to the scalar irregularly shaped beam modulation unit, generating a scalar irregularly shaped beam. The scalar irregularly shaped beam passes through the fluorescence collection and detection unit to obtain a fluorescence image containing information about the magnetic field to be measured. The data processing unit processes the ODMR spectral data of each pixel according to a frequency sweep applied by microwaves, and then fits the image of the magnetic field to be measured according to the Lorentz relationship. This device utilizes an irregularly shaped beam with adjustable shape and geometric side count generated by cross-phase generation to calibrate the spatial positional relationship between the measured magnetic field image and the sample under test. This method not only eliminates the pre-calibration step required in existing technologies but also improves detection efficiency, eliminating the need to move the magnetic field to be measured.