203 results about "Magnetic probe" patented technology

The invention discloses a miniature piezoelectric driving type detection contact integrated laser module and a contact type calibration method, particularly relates to the technical field of precision measurement, is used for solving the problem of dynamic time-varying interference of high-voltage driving pulses on micro-force signals, and is an interference coupling path synchronous acquisition and dynamic resolving technology based on a distributed electromagnetic probe. Online identification of transient interference energy distribution characteristics is realized; a multi-dimensional parameter fusion mechanism of an interference-response dynamic model quantifies cross-domain characteristics of interference energy, system response and signal noise into a comprehensive suppression coefficient, and reverse compensation waveform injection and adaptive filter dynamic adjustment are performed, so that full life cycle offset of common-mode noise is realized, and damage of residual interference to closed-loop control is avoided; through cross-domain collaborative analysis of laser-mechanical data, a self-healing iteration mechanism of contact type calibration parameters is established, progressive pollution of dynamic interference to a calibration reference is eradicated, and long-term consistency of detection precision under complex working conditions is ensured.

The invention relates to the technical field of fault diagnosis and intelligent manufacturing, in particular to a steel wire rope defect identification and quantitative analysis method based on deep transfer learning. According to the technical scheme, the method comprises the following steps that leakage magnetic field signals LF and magnetic flux signals LMA of a steel wire rope are synchronously collected through a double-channel magnetic probe, and multi-channel data high-speed synchronous collection is conducted on the signals; and carrying out double-signal feature extraction on the LF signal and the LMA signal, wherein the extracted features comprise defect image information # imgabs0 #, a defect enclosed area # imgabs1 #, a defect wave crest number # imgabs2 #, a defect width # imgabs3 # and a defect height # imgabs4 #. Through deep transfer learning and multi-modal signal fusion, the problems that qualitative analysis is inaccurate and quantitative means are deficient in traditional steel wire rope defect detection are solved, the method has the advantages of high precision, strong generalization, high efficiency and automation, innovative technical support is provided for safe operation and intelligent operation and maintenance of industrial equipment, and the method is worthy of popularization and application. And steel wire rope defect identification and quantification are facilitated.

The invention provides a method and system for diagnosing high-frequency magnetic disturbance in a quasi-ring symmetrical star simulator, and relates to the technical field of star simulators, and the method comprises the steps: designing the three-dimensional size of a magnetic probe body in combination with a physical research target and a vacuum chamber space limiting condition, and preparing a magnetic probe entity adaptive to an experimental environment; designing a magnetic probe array space layout according to the triangular magnetic configuration characteristics of the CFQS star simulator to obtain a positioned magnetic probe array; a positioned magnetic probe array is utilized to construct a signal transmission link, and a calibration qualification system is formed; generating a multi-channel time domain voltage signal set according to a calibration qualified system; and performing frequency response correction on the multi-channel time domain voltage signal set in combination with a transfer function database, analyzing a disturbance mode structure and a propagation direction through time-frequency spectrum analysis and array phase difference, and finally outputting three-dimensional magnetic disturbance evolution characteristics. The three-dimensional high-frequency magnetic disturbance measuring device has the beneficial effects that the three-dimensional high-frequency magnetic disturbance measuring capability is realized, multi-channel high-fidelity signal acquisition can be realized, and the experimental data quality and the physical analysis capability are improved.

The invention provides a method for plasma bombardment energy distribution detection and life prediction of a silicon carbide part, and belongs to the technical field of semiconductor processing based on deep learning. The method comprises the following steps: firstly, arranging a magnetic probe array to obtain local electromagnetic parameters, and obtaining plasma luminescence characteristics by using optical imaging and spectrum acquisition equipment; preprocessing the acquired data to obtain multi-source fusion features; designing an energy distribution reconstruction framework based on a generative adversarial network, wherein a generator is used for deducing a three-dimensional energy distribution field of plasma; and inputting the three-dimensional energy distribution field time sequence characteristics into a bombardment dynamic characteristic modeling time sequence depth network, establishing a nonlinear mapping relation between energy distribution and material aging, further obtaining life prediction parameters, and finally obtaining the remaining service life of the silicon carbide part. According to the method, a complex degradation mechanism can be reflected more accurately, and the precision and robustness of life prediction are remarkably improved.

The invention relates to the field of dam deformation monitoring, and discloses a dam deformation monitoring device based on a settlement magnetic ring and an MEMS accelerometer, and the device comprises an inclinometer pipe which is buried in a dam body drill hole and is used for synchronously deforming along with a dam body; the flexible intelligent displacement meter is formed by connecting a plurality of single-section flexible displacement meters in series through flexible joints, an MEMS accelerometer and a microprocessor are arranged in a side wall slot of each single-section flexible displacement meter, and the MEMS accelerometer and the microprocessor are used for measuring the inclination angle of each section; the settlement magnetic ring synchronously moves along with the settlement of the dam body; the magnetic probe detects the elevation change of the settlement magnetic ring; and after the data acquisition equipment receives the measured data, the data processing center calculates the horizontal displacement and settlement of the dam body. According to the invention, the flexible displacement meter is combined with the settlement magnetic ring to obtain the three-dimensional coordinates of each single section, so that the horizontal displacement and settlement of the dam body are calculated, the deformation of the dam body is monitored under the condition that the flexible displacement meter is only vertically mounted, the limitation of an embedding mode is overcome, and the adaptability and practicability of monitoring are improved.

Disclosed herein is an instrument and associated methods for a fully automated bench-top NULISA platform, comprising an X-Y-Z-gantry, a microtiter plate stage, an incubator, a quantitative PCR module, a decontamination cleaner for microtiter plates, a microtiter plate sealer, a magnetic probe and comb assembly for sample mixing and magnetic bead extraction, a storage unit for reagents and supplies, and a controller.

The invention provides a calibration system and method for a fluxgate current sensor, the system comprises a power supply module, a test tool module and a current clamp clamped on the input hole wall of the fluxgate current sensor, the power supply module is connected with the test tool module, and the test tool module is connected with the current clamp; the test tool module comprises a control circuit, a current source circuit, a multipath controller circuit and an interface circuit, the control circuit is respectively connected with the current source circuit and the multipath controller circuit, and the current source circuit is connected with the current clamp through a calibration interface in the interface circuit; and the multi-path controller circuit is used for being connected with a fluxgate current sensor through a sensor communication interface in the interface circuit. According to the invention, the problems of easy overload of power supply, high current source cost of large current and high precision and the like of the vehicle-mounted fluxgate current sensor in test calibration due to the characteristics (such as small internal resistance of a magnetic probe coil and large starting current) are solved.

Disclosed is an apparatus for measuring property of an eye. The apparatus has an elongated magnetic probe having a probe head, wherein the probe head has an ultrasonic sensor, a driver coil arranged partially to surround the elongated magnetic probe; and a controller configured to, when in use, selectively energize the driver coil to create a magnetic force to initiate movement of the elongated magnetic probe to contact the probe head with a surface of the eye The ultrasonic sensor in the probe head is configured to send an ultrasonic pulse upon contacting the surface of the eye; measure, using the ultrasonic sensor, time taken to receive at least one reflection of plurality of reflections of the ultrasonic pulse, and calculate the property of the eye using value of the time taken to receive at least one reflection of the ultrasonic pulse.

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.

Disclosed herein is an instrument and associated methods for a fully automated bench-top NULISA platform, comprising an X-Y-Z-gantry, a microtiter plate stage, an incubator, a quantitative PCR module, a decontamination cleaner for microtiter plates, a microtiter plate sealer, a magnetic probe and comb assembly for sample mixing and magnetic bead extraction, a storage unit for reagents and supplies, and a controller.

An electromagnetic (EM) probe for monitoring at least one biological tissue. The EM probe comprises a spiral antenna conductor (not shown) and an EM radiation absorbing layer (92) mounted along the antenna. The EM radiation absorbing layer has a plurality of substantially concentric frame shaped regions (93A-C) corresponding to portions of said spiral antenna having equal surface of antenna conductor, any of said plurality of concentric frame shaped regions has an EM radiation absorption coefficient different than any other of said neighboring concentric frame shaped regions.

Disclosed herein is an instrument and associated methods for a fully automated bench-top NULISA platform, comprising an X-Y-Z-gantry, a microtiter plate stage, an incubator, a quantitative PCR module, a decontamination cleaner for microtiter plates, a microtiter plate sealer, a magnetic probe and comb assembly for sample mixing and magnetic bead extraction, a storage unit for reagents and supplies, and a controller.

An electromagnetic (EM) probe for monitoring one or more biological tissues. The EM probe comprises a cup shaped cavity having an opening and an interior volume, a circumferential flange formed substantially around the cup shaped cavity, in proximity to the opening, at least one layer of a material, for absorbing electromagnetic radiation, applied over at least one of a portion of the circumferential flange and a portion of the outer surface of the cup shaped cavity, and at least one EM radiation element which performs at least one of emitting and capturing EM radiation via the interior volume.

The invention relates to the technical field of Tokamak magnetic probe fault detection, in particular to a real-time fault detection method for a Tokamak magnetic probe. According to the technical scheme, the method comprises the following steps that neural network model training data are collected to construct a training database, and physical parameters related to magnetic probe signals serve as model input; a neural network model with multiple coding layers and decoding layers is adopted to capture the evolution characteristic of the magnetic probe signal in time, and the magnetic probe signal in the subsequent time period is predicted based on the input time period; and inputting and transmitting the model to a trained neural network model to predict a magnetic probe signal in real time. According to the method, the fault detection of the magnetic probe diagnosis in the Tokamak device is realized by using the artificial intelligence algorithm, the calculation precision of the model is improved, and the calculation time of the model is greatly optimized, so that the real-time fault detection of the magnetic probe becomes feasible, and the method has relatively high universality.

The invention relates to a lunar soil trace water accurate detection test method under equivalent vacuum and ultralow temperature coupling, and belongs to the technical field of extraterrestrial celestial body sampling detection. Aiming at the technical bottleneck that the existing lunar soil trace water detection technology in the earth environment is interfered by water vapor, the method comprises the following steps: placing lunar soil in a sample cabin in a nuclear magnetic probe; the temperature of the sample cabin is adjusted through liquid nitrogen refrigeration, and the ultralow-temperature lunar environment is simulated; the humidity condition of the sample cabin is adjusted, and lunar soil nuclear magnetic semaphores under different humidity are collected; establishing a relation curve of different humidity and nuclear magnetic signal increments; when the semaphore is different, deducting signal increment caused by environment humidity by taking a nuclear magnetic signal of unit humidity under a steady-state condition as a reference to obtain nuclear magnetic signal data under an equivalent vacuum environment; and inverting the semaphore under the equivalent vacuum to obtain the lunar soil water content. Compared with the prior art, the method has the advantages that the key technical problem in extraterrestrial sample earth environment detection is solved, and an important means is provided for moon water resource detection and sampling return sample analysis.

This invention discloses a mechanical guide vane master controller, which utilizes a movable wedge-shaped trigger rod to trigger left and right limit switches at the same position, causing each limit switch to output a switching signal. The wedge-shaped trigger rod also moves a travel trigger plate, and magnetic probes at both ends of the travel trigger plate cooperate with corresponding travel sensors to trigger left and right travel sensors to output analog signals. This invention is used for monitoring the travel signals of turbine guide vanes, and can output redundant switching and analog signals, unaffected by weather, location, time, or unit operating conditions, thus offering higher reliability.

The invention relates to the technical field of artificial intelligence, and discloses a nuclear fusion plasma multi-scale dynamic optimization method and system based on quantum-deep learning cooperation. The method comprises the following steps: dispersing a plasma cross section into grids, constructing an Ising model containing sub-bits, and optimizing magnetic field distribution through a quantum annealing algorithm; a space-time convolutional neural network (ST-CNN) is adopted to predict the plasma rupture risk, and an input layer comprises multichannel magnetic probe time sequence data; quantum computing and classical computing resources are dynamically allocated through reinforcement learning, and multi-physics field collaborative optimization is achieved.

The invention provides a design method of a separated miniature magnetic probe of a fluxgate sensor. The design method comprises the following steps: dividing the fluxgate sensor into two independent structural units, namely a magnetic probe module and a signal processing module; the magnetic probe module adopts a #-shaped magnetic probe mounting base made of a non-magnetic material; x-axis, Y-axis and Z-axis magnetic field coils are installed on the base, and each axis is composed of two coils; the magnetic probe voltage signal adapter plate is embedded into the magnetic probe base so as to reduce the overall size; and the magnetic probe module is connected with the signal processing module through a shielding cable to realize signal transmission. According to the scheme, the magnetic probe module and the signal processing module of the fluxgate sensor are separated, the overall size is greatly reduced, and the application requirements of miniaturization and light weight are met.

The present application relates to a kind of colorimetric aptamer sensor based on RCA-HCR The method for detecting mycotoxin, the method includes the preparation of Fe3O4@Au magnetic particle, the preparation of Fe3O4@Au@cDNA@APT magnetic probe, the preparation of ring template, Fe3O4@Au@cDNA@APT magnetic probe is incubated with mycotoxin standard solution or sample to be detected, RCA amplification, triggers HCR, the product obtained in step (6) is added with streptavidin-horseradish peroxidase, incubation, magnetic cleaning, then H2O2 And TMB are added, after reaction at room temperature in the dark, machine detection absorbance value is carried out.The method established in the present application has higher sensitivity, and the detection limit is as low as 0.02 ng / mL.The method established in the present application has good specific recognition ability to GT, and there is no obvious cross reaction between other possible non-target substances.

The invention discloses a nuclear magnetic probe relay mounting bracket assembly and a nuclear magnetic probe, and belongs to the technical field of oil exploration and development, the nuclear magnetic probe relay mounting bracket assembly comprises an electrical connection assembly, a sealing assembly and a frequency adjusting assembly, the electrical connection assembly comprises an upper joint, a lower joint and a transition rod, and the upper joint and the lower joint are respectively connected to two ends of the transition rod; the sealing assembly comprises a sealing plug body, a pressure-bearing sealing plug and a sealing plug contact pin, the sealing plug contact pin penetrates through and is connected to the middle of the sealing plug body in a sealing mode, the sealing plug contact pin is electrically connected with the lower connector, the pressure-bearing sealing plug is connected to the sealing plug body, and the sealing face of the pressure-bearing sealing plug protrudes out of the outer diameter side of the sealing plug body; the frequency adjusting assembly comprises an installation disc used for installing a relay, and the installation disc is connected to the side, close to the upper connector, of the sealing plug body. The sealing assembly is used for sealing, the frequency adjusting assembly is used for frequency adjusting, the sealing performance in the ultrahigh-pressure well hole environment can be improved, and the frequency adjusting precision is improved.

The invention relates to the technical field of defect detection, in particular to a robot magnetic detector constant magnetic field control system and method, and the system comprises a control circuit, a power supply circuit, a magnet yoke winding drive circuit, a magnet yoke winding current detection circuit, a magnet yoke winding temperature detection circuit, a magnetic field detection circuit and a switching signal input and output circuit. The robot magnetic detector constant magnetic field control system and method have the advantages that high-precision constant magnetic control is achieved, detection quality can be guaranteed, intelligent temperature protection can be achieved, equipment damage is prevented, anti-interference design is carried out, signal acquisition reliability can be improved, multi-state indication and remote control are achieved, operation efficiency can be improved, and the robot magnetic detector constant magnetic field control system and method are suitable for popularization and application. The whole system is compact in structure and reasonable in circuit layout, adapts to robot integration, and meets automatic detection requirements of special equipment in complex environments such as high altitude and closed environments.

The lossless magnetic flaw detection device comprises a magnet yoke, an alternating current power supply and a control host, the alternating current power supply provides a power supply for the magnet yoke, the lossless magnetic flaw detection device further comprises a detector, the detector comprises a shell, a shielding layer is arranged in the shell, a protective sleeve and a cable connector are communicated with the shell, a partition plate is arranged in the shell, a supporting pipe is arranged on the partition plate, and the supporting pipe is connected with the control host. Through holes are formed in the partition plate and the shell, a soft magnetic probe and a phase-locked amplification circuit board are arranged in the shell, the lower end of the soft magnetic probe penetrates through the through holes in the supporting pipe, the partition plate and the shell, the upper end of the soft magnetic probe is connected with the shielding layer through a spring, the soft magnetic probe is sleeved with a detection coil, and the input side of the phase-locked amplification circuit board is connected with the detection coil. The output side of the phase-locked amplification circuit board is connected with an alternating-current power supply and a control host through two signal lines arranged in the cable connector, and the control host is connected with the alternating-current power supply through a control line. According to the invention, rapid, sensitive, convenient and nondestructive detection of cracks and defects on the surface layer and near surface layer of the metal material can be realized.

The present invention provides a tunnel transient electromagnetic combined detection device, which belongs to the field of detection technology. It includes a bottom plate, a circular seat is installed on the bottom plate, a first adjustment component is installed on the circular seat, a first rectangular column is installed on the first adjustment component, a second rectangular column is slidably installed in the first rectangular column, two symmetrical first electric push rods are installed on the first rectangular column, one end of the first electric push rod is fixedly installed on the second rectangular column, a first U-shaped frame is fixedly installed on the upper end of the second rectangular column, a second U-shaped frame is hinged on the first U-shaped frame, and a fixed block is installed on one side of the first U-shaped frame. The rotating component is conducive to adjusting the position of the first adjustment rod moving in the second adjustment rod, and the magnetic probe is deeply inserted into the borehole. The protective tube is conducive to avoiding damage to the magnetic probe, and the second electric push rod is conducive to extending the magnetic probe out of the protective tube for use.

A fluxgate current sensor and a current measurement method, wherein the fluxgate current sensor includes a magnetic probe and an excitation and detection circuit, and the magnetic probe includes an excitation iron core and an excitation coil, the excitation coil is connected to the excitation and detection circuit, the excitation and detection circuit is used to output alternating excitation voltages to the excitation coil, and the excitation coil is excited to generate alternating excitation currents and cause the excitation iron core to reach saturation alternately; the excitation and detection circuit is further configured to convert the excitation currents flowing through the excitation coil, into equivalent differences of two currents, so as to calculate average values of the excitation currents flowing through the excitation coil via differential equivalent currents, thereby calculating to-be-measured primary currents by the average values of the excitation currents.

The present invention relates to a precise detection test method for trace water in lunar soil under the coupling of equivalent vacuum and ultra-low temperature, belonging to the technical field of extraterrestrial celestial body sampling and detection. Aiming at the technical bottleneck that the existing lunar soil trace water detection technology on the earth is interfered by water vapor, the solution steps include: placing the lunar soil in the sample chamber inside the nuclear magnetic probe; using liquid nitrogen refrigeration to adjust the temperature of the sample chamber to simulate the ultra-low temperature environment of the moon; adjusting the humidity condition of the sample chamber and collecting the nuclear magnetic signal amount of lunar soil under different humidities; establishing a relationship curve between different humidities and the increment of nuclear magnetic signals; when there are differences in the signal amounts, taking the nuclear magnetic signal per unit humidity under steady-state conditions as the benchmark to deduct the signal increment caused by environmental humidity, and obtaining the nuclear magnetic signal data under the equivalent vacuum environment; and inverting the signal amount under the equivalent vacuum to obtain the lunar soil water content. Compared with the existing technology, the present invention solves the key technical problems in the detection of extraterrestrial samples in the earth environment, and provides an important means for lunar water resource detection and the analysis of sampling return samples.

The invention provides a black box magnetic induction searching device and method.The black box magnetic induction searching device comprises an MCU main control circuit, a data acquisition front-end processing circuit and a magnetic gradient sensor, the magnetic gradient sensor comprises two magnetic probes used for detecting the magnetic field intensity of different positions, and the two magnetic probes form a magnetic gradient difference; the magnetic gradient sensor is connected with the input end of the data acquisition front-end processing circuit, the output end of the data acquisition front-end processing circuit is connected with the MCU main control circuit, and the data acquisition front-end processing circuit is used for converting an acquired analog magnetic signal into a digital signal and then sending the digital signal to the MCU main control circuit for analysis and processing. And the MCU main control circuit matches the acquired magnetic field intensity data with a preset magnetic field intensity threshold value, and determines the position of the black box according to a matching result. According to the invention, accurate positioning and searching of the black box at the depth of 0.5 m from the ground are realized, the problem that the black box cannot be searched and positioned when an airplane crashes on the land is solved, and rapid and effective searching of the black box on the land is realized.

The invention relates to the technical field of quantum precision measurement, and provides a quantum magnetic probe which comprises a diamond block, a polarization-maintaining single-mode optical fiber and a microwave radiator. According to the scheme, the optical waveguide for transmitting the linear polarization excitation light in the specific direction is connected with the diamond block containing the NV color center, and the transmission direction of the linear polarization excitation light and the NV axial direction are controlled to form a specific angle, so that efficient excitation in the specified NV axial direction is realized, and the measurement accuracy of the magnetic component in the specified axial direction is further improved; the structure is simple and stable, the size is small, and the practicability is high.

The present invention belongs to the field of biomedicine technology, and more specifically, to a magnetic probe and its application in the preparation and detection of matrix metalloproteinases. The present invention provides a magnetic probe and its application in the preparation and detection of matrix metalloproteinases, the purpose of which is to utilize the hydrolysis characteristics of matrix metalloproteinases to identify specific oligopeptide sequences and cut them, prepare functionalized signal probes, and combine magnetic separation technology and commercial test strips to solve the problems of high cost, low detection sensitivity and narrow scope of application of the existing technology. The present invention utilizes the high specificity of protease hydrolysis and the high sensitivity of the test strips to the target probe to achieve sensitive detection of MMP-1, with a visual detection limit of 65.5 pg / mL, which has good anti-interference and sensitivity in the application of biological sample matrices.

The present disclosure provides a detection system comprising: one or more magnetic probes configured to acquire stress measurements at a plurality of points along a surface of a sample, where stress data is acquired at a plurality of angles for each of the plurality of points; and a computing system communicatively coupled to the one or more magnetic probes, the computing system including at least one data processor and a memory storing a plurality of predetermined material calibration parameters and material characteristics of a plurality of materials and instructions, the instructions, when executed by the at least one processor, cause the at least one processor to perform operations including receiving stress measurements from the one or more magnetic probes, comparing the stress measurements to the material calibration parameters and material characteristics, determining a material characteristic of the sample based on the comparison, and determining the material characteristic of the sample based on the determined material characteristic. And providing the material characteristics of the sample to a user interface display.

The present disclosure relates to the field of rock soil detection and in particular to a multi-probe nuclear magnetic resonance (NMR) rock soil in-situ monitoring system, which includes a multi-probe component, a spectrograph component, an industrial control computer and a power cable. The multi-probe component includes a shell and multiple nuclear magnetic probes disposed inside the shell. The multiple nuclear magnetic probes are respectively located at the soil layers of different depths and have different measurement frequencies. The spectrograph component is used to transmit and receive NMR-measured radio frequency signals, the industrial control computer is used to transmit a measurement instruction and perform real-time processing on the measurement data, and the power cable is connected with the multiple nuclear magnetic probes, the spectrograph component and the industrial control computer to supply power and transmit the measurement data.