CN117589861A - A non-destructive testing system based on magnetic sensors - Google Patents

Abstract

The invention discloses a nondestructive testing system based on a magnetic sensor, which comprises: the device comprises a magnetic sensor, an information processing module, an upper computer and a sample driving device, wherein the sample driving device is used for driving the relative position of a magnetic sample to be detected and the magnetic sensor to change; the magnetic sensor is used for collecting magnetic field intensity information of the position where the magnetic sensor is located in real time; the information processing module is used for collecting and processing the detection signals; the upper computer is used for processing the signals and comparing the results with the standard samples to obtain detection results. According to the nondestructive detection system based on the magnetic sensor, provided by the invention, the magnetic material is detected, so that a sample is not required to be magnetized, a complex magnetizing device is eliminated, and the cost is greatly reduced; no coupling agent or magnetic powder liquid is needed, the operation is simple, and the detection is rapid and convenient; the non-contact detection can completely realize automatic or semi-automatic detection, and the labor cost is reduced; any irregularly shaped magnetic sample to be tested can be detected.

Description

A non-destructive testing system based on magnetic sensors

Technical field

The invention relates to the technical field of magnetic material damage detection, and in particular to a non-destructive detection system based on magnetic sensors.

Background technique

Non-destructive testing can evaluate the performance and working status of the components to be tested without damaging them. It is a key technology to ensure the safe operation of equipment and is widely used in the industrial field. Metal components are widely used in production and life. Accurate and effective detection of damage and failure of metal components is of great significance to the safety of life and property of the country and people. In terms of non-destructive testing of metal components, conventional non-destructive testing technologies (such as magnetic flux leakage testing, magnetic particle testing, penetrant testing, eddy current testing, ultrasonic testing, radiographic testing, etc.) are mostly inefficient, bulky, or can only detect surface defects of metal components. (such as eddy current testing and magnetic particle testing), when it comes to internal damage, the detection is generally cumbersome (such as magnetic flux leakage testing requires a complex magnetization device, ultrasonic testing requires the addition of couplant, etc.), or it is difficult to perform internal testing. Most of the current technologies are Contact detection, which must be in contact with the magnetic sample to be tested, is difficult to implement automated detection, resulting in high labor costs for detection. Several existing non-contact non-destructive testing technologies, such as eddy current testing, machine vision, etc., can only detect surface defects and damage of the magnetic samples to be tested. Therefore, there is currently no simple and convenient method that can detect the interior and surface of the magnetic samples to be tested. Non-contact non-destructive testing technology that detects simultaneously.

Magnetic non-destructive testing technology is an important non-destructive testing technology. The principle is to detect cracks or damage on the surface and inside of magnetic objects by detecting the magnetic field distribution on the surface. However, current magnetic non-destructive testing technologies, such as magnetic flux leakage and magnetic particle testing, all have complex magnetizing devices, which result in bulky, complex testing procedures and high costs. In particular, current non-destructive testing technologies cannot detect irregularly shaped items. So far, there is no simple, convenient, fast and non-contact magnetic non-destructive testing technology and means.

Therefore, a non-destructive testing system based on magnetic sensors is urgently needed.

Contents of the invention

The purpose of the present invention is to provide a non-destructive testing system based on a magnetic sensor to solve the above-mentioned problems in the prior art and enable rapid and non-contact detection of magnetic samples to be tested.

The invention provides a non-destructive testing system based on a magnetic sensor, which includes: a magnetic sensor, an information processing module, a host computer and a sample driving device, wherein the sample driving device is used to drive the magnetic sample to be tested and the magnetic sensor. The relative position changes; the magnetic sensor is used to collect the magnetic field intensity information of the position of the magnetic sensor in real time during the position change of the magnetic sensor relative to the magnetic sample to be measured; the information processing module is used to The magnetic field intensity detection signal of the magnetic sensor is collected, recorded, stored and processed, and the signal processing results are uploaded to the host computer; the host computer is used to visualize the signal processing results obtained by the information processing module The interface is displayed and compared with the signal corresponding to the standard sample to obtain the detection result of the magnetic sample to be tested.

The non-destructive testing system based on the magnetic sensor as described above, preferably, the non-destructive testing system based on the magnetic sensor further includes a controller connected to the magnetic sensor and the sample driving device for controlling the test object. Relative motion between the magnetic sample and the magnetic sensor.

As described above, in the non-destructive testing system based on a magnetic sensor, preferably, the change in the relative position of the magnetic sample to be measured and the magnetic sensor includes: the positions of both the magnetic sample to be measured and the magnetic sensor change, specifically is the rotation of the magnetic sample to be measured. During the rotation, the height of the magnetic sensor relative to the magnetic sample to be measured remains unchanged. After the magnetic sample to be measured rotates once, the height of the magnetic sensor relative to the magnetic sample to be measured changes once. The detection information of the magnetic sensor can cover all heights of the magnetic sample to be measured.

As described above, in the non-destructive testing system based on magnetic sensors, it is preferable that the sample driving device includes a base, a rotating platform and a first mounting bracket are provided on the base, and the magnetic sample to be tested is provided on the On the rotating platform, a rotating motor is provided on one side of the rotating platform for driving the rotating platform to rotate; the magnetic sample to be measured can rotate with the rotating platform, and the first mounting bracket is arranged in a vertical direction. There is a guide rail, the information processing module is arranged on the guide rail, the guide rail is connected with a lifting motor, and the information processing module can be lifted and lowered along the guide rail, and the magnetic sensor is arranged on the side wall of the information processing module , the magnetic sensor can move up and down along the guide rail along with the information processing module.

As described above, in the non-destructive testing system based on magnetic sensors, it is preferable that a first position detection sensor for detecting the lifting position of the magnetic sensor is provided on one side of the guide rail, and the lower end stop point of the magnetic sensor is in contact with the The lower end position of the magnetic sample to be measured corresponds to the upper end stop point of the magnetic sensor corresponding to the top position of the magnetic sample to be measured.

As described above, the non-destructive testing system based on the magnetic sensor, preferably, the change in the relative position of the magnetic sample to be measured and the magnetic sensor includes: the position of the magnetic sample to be measured remains unchanged, and the magnetic sensor is relative to the magnetic sensor. The magnetic sample to be measured moves laterally and/or vertically, so that the magnetic sensor fully covers a plane of the magnetic sample to be measured.

As described above, the non-destructive testing system based on magnetic sensors, preferably, the sample driving device includes a second mounting bracket, the information processing module is arranged on the second mounting bracket, and the magnetic sensor is arranged on Below the information processing module, the information processing module is connected to a motor unit. The motor unit is used to drive the information processing module to drive the magnetic sensor to move in the horizontal direction and/or vertical direction on the surface of the magnetic sample to be measured. .

As described above, the non-destructive testing system based on magnetic sensors, preferably, the motor unit includes a horizontal motor, a vertical motor and a vertical motor, wherein the horizontal motor is used to drive the information processing module to drive the The magnetic sensor moves along the x-axis direction on the surface of the magnetic sample to be measured. The vertical motor is used to drive the information processing module to drive the magnetic sensor to move along the y-axis direction on the surface of the magnetic sample to be measured. The vertical motor is used to The information processing module is driven to drive the magnetic sensor to move along the z-axis direction.

The non-destructive testing system based on magnetic sensors as described above, wherein preferably, the magnetic sensors include at least one of anisotropic magnetic sensors, giant magnetoresistance, tunnel junction magnetic sensors and Hall sensors; and, Magnetic sensors include a single sensor with a single probe, or multiple sensors with multiple probes.

As described above, in the non-destructive testing system based on magnetic sensors, preferably, the information processing module includes a signal amplification circuit, and the signal amplification circuit includes an operational amplifier, an A/D chip, a microcontroller, a resistor and a capacitor.

The non-destructive testing system based on the magnetic sensor of the present invention drives the relative position of the magnetic sample to be measured and the magnetic sensor to change through the sample driving device; real-time magnetic field strength information of its location through the magnetic sensor; and the magnetic field of the magnetic sensor through the information processing module. The intensity detection signal is collected, recorded, stored and processed, and the signal processing results are uploaded to the host computer; the signal processing results are displayed on a visual interface through the host computer and compared with the signals corresponding to the standard samples to obtain the results to be measured Detection results of magnetic samples; by detecting the size and distribution of the magnetic field on the surface of the magnetic sample to be tested, it is possible to determine whether there are defects, materials, uniformity and residual stress inside and on the surface of the magnetic sample to be tested; for testing magnetic materials, There is no need to magnetize the sample, eliminating the complex magnetization device, which greatly reduces the cost; no coupling agent or magnetic powder liquid is required, the operation is simple, and the detection is fast and convenient; the non-contact detection can fully realize automatic or semi-automatic detection, reducing manpower Low cost; can detect any irregularly shaped magnetic sample to be tested.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings, in which:

Figure 1 is a schematic structural diagram of a first embodiment of a non-destructive testing system based on magnetic sensors provided by the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of a magnetic sensor-based non-destructive testing system provided by the present invention.

Explanation of reference symbols: 1-magnetic sensor, 2-magnetic sample to be measured, 3-base, 4-rotating platform, 5-first mounting bracket, 6-guide rail, 7-information processing module, 8-host computer, 9- Controller, 10-motor unit, 11-second mounting bracket.

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only and is in no way intended to limit the disclosure, its application or uses. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangements of parts and steps, compositions of materials, numerical expressions, and numerical values set forth in these examples are to be construed as illustrative only and not as limitations.

The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Similar words such as "include" or "include" mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", etc. are only used to express relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In this disclosure, when a specific component is described as being between a first component and a second component, there may or may not be an intervening component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without intervening components, or may not be directly connected to the other components but have intervening components.

All terms (including technical terms or scientific terms) used in this disclosure have the same meanings as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant technology and should not be interpreted in an idealized or highly formalized sense, except as expressly stated herein. Define it this way.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and devices should be considered a part of the specification.

As shown in Figures 1 and 2, the magnetic sensor-based non-destructive testing system provided by this embodiment includes: a magnetic sensor 1, an information processing module 7, a host computer 8 (not shown in Figure 2) and a sample driving device, where, The sample driving device is used to drive the relative position of the magnetic sample 2 to be measured to the magnetic sensor 1 to change; the magnetic sensor 1 is used to change the position of the magnetic sensor 1 relative to the magnetic sample 2 to be measured. , the magnetic field strength information of the location of the magnetic sensor 1 is collected in real time; the information processing module 7 is used to collect, record, store and process the magnetic field strength detection signal of the magnetic sensor 1, and upload the signal processing results to the host computer 8; the host computer 8 is used to visualize the signal processing results obtained by the information processing module 7 and compare them with the signals corresponding to the standard samples to obtain the magnetic samples to be measured. 2 test results.

Among them, the standard sample refers to a defect-free product with the same shape, material, process and other parameters as the magnetic sample to be tested. The standard sample can be obtained through detection methods such as XRD detection. The magnetic sample 2 to be tested refers to a large number of magnetic components, such as carbon steel, metal auto parts, bearings and other magnetic materials.

Further, the magnetic sensor 1 is at least one of anisotropic magnetic sensor (AMR), giant magnetoresistance (GMR), tunnel junction magnetic sensor (TMR) and Hall sensor (Hall). Further, the magnetic sensor 1 includes a single sensor with a single probe, or multiple sensors with multiple probes. It should be noted that the present invention does not specifically limit the type, quantity and probe type of magnetic sensors.

Further, the information processing module 7 includes a signal amplification circuit, which includes an operational amplifier, an A/D chip, a microcontroller, and various resistors and capacitors. In specific implementation, the signal amplification circuit can be arranged on the PCB board. Specifically, the information processing module 7 collects, processes, digitizes, and transmits and communicates the detection signals of the magnetic sensor 1 to the host computer 8 so that the back-end host computer 8 can analyze, process, and display the collected data. The host computer 8 is a computer or an industrial computer, which is used to process and display the collected data.

During work, the relative position of the magnetic sample 2 to be measured and the magnetic sensor 1 is driven by the sample driving device to change. During this process, the magnetic field intensity information of its location is real-timely obtained through the magnetic sensor 1; the magnetic sensor is processed through the information processing module 7 The magnetic field strength detection signal of 1 is processed, and the signal processing result is uploaded to the host computer 8; the host computer 8 compares the signal processing result with the signal corresponding to the standard sample, thereby obtaining the detection result of the magnetic sample 2 to be tested. Among them, the test results include whether there are defects, material, uniformity, residual stress, etc. inside and on the surface of the magnetic sample 2 to be tested.

Considering that the internal performance of any magnetic object is closely related to its surface magnetic field distribution, changes in its internal composition, defects, holes and stress will cause abnormalities in its surface magnetic field distribution. Therefore, the present invention detects the surface magnetic field of the magnetic sample 2 to be measured. The distribution can be used to judge the internal performance of the magnetic sample 2 to be tested. By comparing it with the standard sample, the sample test result can be obtained, which can be used as a new non-destructive testing method.

Furthermore, the non-destructive testing system based on magnetic sensors provided by the present invention can be used for non-destructive testing of steel pipe defects and wall thickness; non-destructive testing of magnetic ring defects and wall thickness; and performance testing of magnetic materials, such as testing of insulator magnetic materials. Magnetic permeability and magnetic loss, etc.; detection of various materials; surface flatness and roughness detection of chips, solar silicon wafers and other materials; detection of sewage and pesticide residues; detection of railway wheels, bridges, underground Real-time monitoring and detection of target detection objects in pipelines and other application fields; detection of welds; detection of PCB boards, etc. It should be noted that the present invention does not specifically limit the application scenarios of the non-destructive testing system.

Furthermore, the magnetic sensor-based non-destructive testing system also includes a controller 9 (not shown in Figure 2), which is connected to the magnetic sensor 1 and the sample driving device, and is used to control the magnetic sample 2 to be tested and the magnetic sample 2. The relative motion between the magnetic sensors 1. Illustratively, the controller 9 is a programmable logic controller (PLC). In one embodiment of the present invention, the model of the controller 9 is S7-300. It should be noted that the present invention does not specify the type of the controller 9 and models are not specifically limited.

As shown in Figure 1, in one embodiment of the present invention, the change in the relative position of the magnetic sample 2 to be measured and the magnetic sensor 1 includes: the positions of both the magnetic sample 2 to be measured and the magnetic sensor 1 change. , specifically, the magnetic sample 2 to be measured rotates. During the rotation process, the height of the magnetic sensor 1 relative to the magnetic sample 2 to be measured remains unchanged. After the magnetic sample 2 to be measured rotates once, the height of the magnetic sensor 1 relative to the magnetic sample 2 to be measured remains unchanged. The height of the sample 2 changes once so that the detection information of the magnetic sensor 1 can cover all heights of the magnetic sample 2 to be measured.

Specifically, as shown in Figure 1, the sample driving device includes a base 3. A rotating platform 4 and a first mounting bracket 5 are provided on the base 3. The magnetic sample 2 to be measured is arranged on the rotating platform 4. On one side of the rotating platform 4, a rotating motor (not shown) is provided for driving the rotating platform 4 to rotate; the magnetic sample 2 to be measured can rotate with the rotating platform 4, and the first installation The bracket 5 is provided with a guide rail 6 in a vertical direction, and the information processing module 7 is provided on the guide rail 6. The guide rail 6 is connected to a lifting motor (not shown), and the information processing module 7 can move along the The guide rail 6 rises and falls, and the magnetic sensor 1 is arranged on the side wall of the information processing module 7 . The magnetic sensor 1 can rise and fall along the guide rail 6 with the information processing module 7 . Specifically, the controller 9 is used to control the rotation direction and speed of the rotating motor, the lifting direction, lifting speed, lifting start and stop of the lifting motor, etc. In one embodiment of the present invention, the rotating platform 4 may be a three-dimensional moving platform on which the magnetic sample to be measured is placed.

Further, a first position detection sensor (not shown) for detecting the lifting position of the magnetic sensor 1 is provided on one side of the guide rail 6 , and the lower end stop point of the magnetic sensor 1 is in contact with the magnetic sample 2 to be measured. The lower end position corresponds to the upper end stop point of the magnetic sensor 1 and the top position of the magnetic sample 2 to be measured.

In a specific implementation, the magnetic sample 2 to be measured is placed on the rotating platform 4, and the rotation of the rotating motor is controlled by the controller 9. When the magnetic sample 2 to be measured rotates with the rotating platform 4, the magnetic sample 2 to be measured can be detected. The magnetic field distribution on the surface; by controlling the height of the lifting motor through the controller 9 and then adjusting the height of the magnetic sample 2 to be measured, the surrounding magnetic field at different heights of the magnetic sample 2 to be measured can be detected and all information of the magnetic sample 2 to be measured can be obtained. , based on comparing the changes in the output signal of the magnetic sensor 1 with the standard data pre-stored in the host computer 8, the internal defects or damage of the magnetic sample 2 to be measured can be determined. Moreover, by analyzing the relevant data through the host computer 8, the internal relevant information of the magnetic sample 2 to be tested can be detected, such as material, shape, defect size and location, thickness, etc. In another embodiment of the present invention, multiple magnetic sensors 1 can also be placed at different heights close to the magnetic sample 2 to be measured, which can speed up the detection rate. The distance between the magnetic sensors and the magnetic sample 2 to be measured can be According to different scene adjustments, the present invention does not specifically limit this.

Furthermore, as shown in Figure 2, the change in the relative position of the magnetic sample 2 to be measured and the magnetic sensor 1 includes: the position of the magnetic sample 2 to be measured remains unchanged, and the magnetic sensor 1 is relative to the magnetic sample to be measured. 2 moves laterally and/or vertically so that the magnetic sensor 1 fully covers a plane of the magnetic sample 2 to be measured.

Specifically, as shown in Figure 2, the sample driving device includes a second mounting bracket 11, the information processing module 7 is disposed on the second mounting bracket 11, and the magnetic sensor 1 is disposed on the information processing module. Below the module 7, the information processing module 7 is connected to a motor unit 10. The motor unit 10 is used to drive the information processing module 7 to drive the magnetic sensor 1 on the surface of the magnetic sample 2 to be measured in the horizontal direction and/or vertical movement.

Further, the motor unit 10 includes a horizontal motor, a vertical motor and a vertical motor, wherein the horizontal motor is used to drive the information processing module 7 to drive the magnetic sensor 1 on the surface of the magnetic sample 2 to be measured along the x-axis. The vertical motor is used to drive the information processing module 7 to drive the magnetic sensor 1 to move in the y-axis direction on the surface of the magnetic sample 2 to be measured. The vertical motor is used to drive the information processing module 7 to drive the magnetic sensor 1 to move along the y-axis direction. The magnetic sensor 1 moves along the z-axis direction. Specifically, the controller 9 is used to control the running direction, running speed, etc. of the horizontal stepper motor, the vertical stepper motor, and the vertical stepper motor. Through the horizontal motor and the vertical motor, the scanning direction and scanning speed of the magnetic sensor 1 to the magnetic sample 2 to be measured can be controlled; through the vertical motor, the height of the magnetic sensor 1 relative to the magnetic sample 2 to be measured can be controlled to adapt to different thicknesses. Detection of magnetic samples to be tested and different scenarios. In one embodiment of the present invention, the horizontal motors, vertical motors and vertical motors are all stepper motors. It should be noted that the present invention does not specify the type, model, quantity and distribution of the horizontal motors, vertical motors and vertical motors. The location is not specifically limited.

In the specific implementation, the magnetic sample 2 to be measured is placed under the magnetic sensor 1, and the magnetic sensor 1 is driven by the motor unit to scan the magnetic sample 2 to be measured line by line to obtain the two-dimensional surface magnetic field distribution information of the magnetic sample 2 to be measured, and Compare it with a standard sample or preset data to determine the internal information of the magnetic sample 2 to be tested.

The present invention determines whether there are defects, materials, uniformity, residual stress, etc. inside and on the surface of the magnetic sample to be measured by detecting the size and distribution of the magnetic field on the surface of the magnetic sample to be measured; the detection method is greatly simplified, and there is no complicated and huge magnetization, Demagnetization, auxiliary consumables and mechanical transmission devices can not only be made into portable detection devices; non-contact measurement methods can be directly installed in certain locations that require key observations, such as underground pipelines, chemical pipelines and other accident-prone places, and can be used at any time. Transmit data to detect the performance of the target under test in real time.

The non-destructive testing system based on the magnetic sensor provided by the embodiment of the present invention uses the sample driving device to drive the relative position of the magnetic sample to be tested and the magnetic sensor to change; uses the magnetic sensor to obtain real-time magnetic field intensity information at its location; and uses the information processing module to detect the magnetic field intensity. The magnetic field strength detection signal of the sensor is collected, recorded, stored and processed, and the signal processing results are uploaded to the host computer; the signal processing results are displayed on a visual interface through the host computer and compared with the signals corresponding to the standard samples, thereby obtaining Test results of the magnetic sample to be tested; by detecting the size and distribution of the magnetic field on the surface of the magnetic sample to be tested, it is possible to determine whether there are defects, materials, uniformity, residual stress, etc. inside and on the surface of the magnetic sample to be tested; for magnetic materials The detection does not require magnetizing the sample, eliminating the complex magnetization device, which greatly reduces the cost; it does not require any coupling agent or magnetic powder liquid, the operation is simple, and the detection is fast and convenient; the non-contact detection can fully realize automatic or semi-automatic detection. Reduce labor costs; can detect any irregularly shaped magnetic samples to be tested.

Up to this point, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concepts of the present disclosure, some details that are well known in the art have not been described. Based on the above description, those skilled in the art can completely understand how to implement the technical solution disclosed here.

Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the disclosure is defined by the appended claims.

Claims (10)

1. A non-destructive inspection system based on a magnetic sensor, comprising: the device comprises a magnetic sensor, an information processing module, an upper computer and a sample driving device, wherein the sample driving device is used for driving the relative position of a magnetic sample to be detected and the magnetic sensor to change; the magnetic sensor is used for collecting magnetic field intensity information of the position of the magnetic sensor in real time in the process that the position of the magnetic sensor changes relative to a magnetic sample to be detected; the information processing module is used for collecting, recording, storing and processing the magnetic field intensity detection signals of the magnetic sensor and uploading the signal processing results to the upper computer; the upper computer is used for displaying the signal processing result obtained by the information processing module in a visual interface and comparing the signal processing result with a signal corresponding to a standard sample to obtain a detection result of the magnetic sample to be detected.

2. The magnetic sensor-based non-destructive inspection system according to claim 1, further comprising a controller coupled to the magnetic sensor and the sample driving device for controlling relative movement between the magnetic sample to be inspected and the magnetic sensor.

3. The magnetic sensor-based non-destructive testing system of claim 1, wherein the changing of the relative position of the magnetic sample to be tested and the magnetic sensor comprises: the positions of the magnetic sample to be measured and the magnetic sensor are changed, specifically, the magnetic sample to be measured rotates, in the rotating process, the height of the magnetic sensor relative to the magnetic sample to be measured is kept unchanged, and after the magnetic sample to be measured rotates once, the height of the magnetic sensor relative to the magnetic sample to be measured is changed once, so that the detection information of the magnetic sensor can cover all the heights of the magnetic sample to be measured.

4. A magnetic sensor-based nondestructive testing system according to claim 3, wherein the sample driving device comprises a base, a rotary platform and a first mounting bracket are arranged on the base, the magnetic sample to be tested is arranged on the rotary platform, and a rotary motor is arranged on one side of the rotary platform and used for driving the rotary platform to rotate; the magnetic sample to be tested can rotate along with the rotating platform, a guide rail is arranged on the first mounting bracket along the vertical direction, the information processing module is arranged on the guide rail, the guide rail is connected with a lifting motor, the information processing module can lift along the guide rail, the magnetic sensor is arranged on the side wall of the information processing module, and the magnetic sensor can lift along the guide rail along the information processing module.

5. The nondestructive testing system based on the magnetic sensor according to claim 4, wherein a first position detection sensor for detecting the lifting position of the magnetic sensor is arranged on one side of the guide rail, the lower end stopping point of the magnetic sensor corresponds to the lower end position of the magnetic sample to be tested, and the upper end stopping point of the magnetic sensor corresponds to the top end position of the magnetic sample to be tested.

6. The magnetic sensor-based non-destructive testing system of claim 1, wherein the changing of the relative position of the magnetic sample to be tested and the magnetic sensor comprises: the position of the magnetic sample to be measured is kept unchanged, and the magnetic sensor moves transversely and/or vertically relative to the magnetic sample to be measured, so that the magnetic sensor completely covers one plane of the magnetic sample to be measured.

7. The nondestructive testing system based on the magnetic sensor according to claim 6, wherein the sample driving device comprises a second mounting bracket, the information processing module is arranged on the second mounting bracket, the magnetic sensor is arranged below the information processing module, the information processing module is connected with a motor unit, and the motor unit is used for driving the information processing module to drive the magnetic sensor to move on the surface of the magnetic sample to be tested in the horizontal direction and/or the vertical direction.

8. The magnetic sensor-based nondestructive testing system according to claim 7, wherein the motor unit comprises a horizontal motor, a vertical motor and a vertical motor, wherein the horizontal motor is used for driving the information processing module to drive the magnetic sensor to move along the x-axis direction on the surface of the magnetic sample to be tested, the vertical motor is used for driving the information processing module to drive the magnetic sensor to move along the y-axis direction on the surface of the magnetic sample to be tested, and the vertical motor is used for driving the information processing module to drive the magnetic sensor to move along the z-axis direction.

9. The magnetic sensor-based non-destructive testing system of claim 1, wherein said magnetic sensor comprises at least one of an anisotropic magnetic sensor, a giant magnetoresistance, a tunnel junction magnetic sensor, and a hall sensor; and, the magnetic sensor includes a single sensor having a single probe, or a plurality of sensors having a plurality of probes.

10. The magnetic sensor-based non-destructive inspection system according to claim 1, wherein said information processing module comprises a signal amplification circuit comprising an operational amplifier, an a/D chip, a single chip, a resistor, and a capacitor.