Automatic fully-built-in superconducting magnet magnetic field intensity measuring device and measuring method

Abstract

The present application discloses an automatic fully-built-in superconducting magnet magnetic field intensity measuring device and measuring method. The magnetic field intensity measuring device comprises a measurement probe, a position adjustment assembly, a control unit, a position measurement assembly, and a data processing unit; the measurement probe is used for measuring magnetic field intensity; the position adjustment assembly is used for driving the measurement probe to move; the control unit is used for receiving test information, and issuing a control signal to the position adjustment assembly so as to control the position adjustment assembly to move; the position measurement assembly is used for measuring the displacement and / or rotation angle of the position adjustment assembly or the measurement probe, and the position measurement assembly can issue a measurement signal to the control unit; and the data processing unit is electrically connected to the measurement probe, and is used for receiving a test result obtained from measurement by the measurement probe. The magnetic field intensity measuring device and measuring method of the present application are used for achieving automatic adjustment of the position of the measurement probe, thereby improving the adjustment precision of the position of the measurement probe and the measurement efficiency, and ensuring the safety during measurement.

Description

Automatic fully built-in superconducting magnet magnetic field strength measurement device and measurement method

[0001] This application claims priority to Chinese Patent Application No. 202311771197.4 filed on December 21, 2023, which is incorporated by reference in its entirety. Technical Field

[0002] The present application relates to the technical field of high-end medical equipment, for example, to a device and method for measuring the magnetic field strength of a superconducting magnet. Background Art

[0003] Superconducting magnets are the most important components of medical proton accelerators. Particles in the proton accelerator are accelerated by the superconducting magnet's magnetic field. Once accelerated to the energy required for treatment and entering the human body, they release a large amount of energy in diseased areas, such as tumors, to treat the patient's affected areas. The magnetic field distribution range of proton accelerators in related technologies spans a wide range, and the accuracy of magnetic field measurement within the superconducting magnet is required to be high. Any errors in magnetic field measurement will directly affect the subsequent shimming of the main magnet, affecting the beam quality of the medical proton accelerator and the patient's treatment.

[0004] In the related art, the magnetic field strength of a superconducting magnet is detected by measuring it using a nuclear magnetic field probe and / or a Hall probe. In order to enable the probe to measure multiple positions inside the superconducting magnet, a measuring device is provided that can drive the probe to move so that the probe can be moved to multiple positions inside the superconducting magnet for measurement.

[0005] To improve the accuracy of the probe's position adjustment, test devices in related technologies typically employ a semi-automatic, semi-manual drive method. This involves automatically adjusting one or more degrees of freedom of the probe through motors and other devices, while manually adjusting one or more other degrees of freedom. Because the high magnetic field of a superconducting magnet prevents humans from approaching, manual adjustments require first eliminating the magnetic field and then re-energizing it. This semi-automatic, semi-manual drive method takes a long time to measure and reduces measurement efficiency. Summary of the Invention

[0006] The purpose of this application is to provide an automated fully built-in superconducting magnet magnetic field strength measurement device and measurement method, which is used to automatically adjust the position of the detection probe and improve the adjustment accuracy and detection efficiency of the detection probe position.

[0007] The purpose of this application is achieved by the following technical solutions:

[0008] An automated fully built-in superconducting magnet magnetic field strength measuring device, comprising:

[0009] Detection probe, used to detect the surrounding magnetic field strength;

[0010] A position adjustment component, used for driving the detection probe to move;

[0011] a control unit electrically connected to the position adjustment component, and configured to receive test information and send a control signal to the position adjustment component to control the movement of the position adjustment component;

[0012] a position detection component, configured to detect the displacement and / or rotation angle of the position adjustment component or the detection probe, wherein the position detection component is also electrically connected to the control unit and is capable of sending a detection signal to the control unit;

[0013] The data processing unit is electrically connected to the detection probe and is used to receive the test results obtained by the detection probe.

[0014] In some optional embodiments, the position adjustment assembly includes a first driving unit, a second driving unit, and a rotation unit, wherein the first driving unit is used to drive the detection probe to move along a first direction, the second driving unit is used to drive the detection probe to move along a second direction, and the rotation unit is used to drive the detection probe to rotate around the first direction or the second direction;

[0015] The angle formed by the first direction and the second direction is 80-100°.

[0016] In some optional embodiments, the position adjustment assembly also includes a first mounting seat and a second mounting seat, the first mounting seat is installed on the rotating unit so that the rotating unit can drive the first mounting seat to rotate; the first driving unit is installed on the first mounting seat, and the first driving unit includes a first moving member, the first moving member is connected to the second mounting seat, and can drive the second mounting seat to move along the first direction; the second driving unit is installed on the second mounting seat, and the second driving unit also includes a second moving member, the second moving member is connected to the detection probe, and can drive the detection probe to move along the second direction.

[0017] In some optional embodiments, the rotation unit includes a first driving member and a first rotating member, the first driving member is used to drive the first rotating member to rotate; the position detection component includes an angle detection element for detecting the rotation angle, the angle detection element is connected to the first rotating member, and can move synchronously with the first rotating member.

[0018] In some optional embodiments, the device further includes a first protective sleeve, which is disposed on the outer periphery of the angle detection element to protect the angle detection element;

[0019] And / or, the angle detection element is a rotary encoder.

[0020] In some optional embodiments, the position detection component includes a first detection component for detecting movement in a first direction, the first detection component includes a first detection element fixed to the first mounting seat, and a second detection element mounted on the second mounting seat or the first movable member, the second detection element passes through the first detection element and can move synchronously with the second mounting seat, and the first detection element is used to detect the movement amount of the second detection element.

[0021] In some optional embodiments, the first detection assembly further includes a first connecting member, the first connecting member being fixedly mounted on the second mounting seat or the first movable member, and the second detection element being mounted on the first connecting member; the first connecting member including first limiting portions located at opposite ends of the first detection element along a first direction, wherein a pair of the first limiting portions limit the relative movement range of the first detection element and the second detection element;

[0022] And / or, the first detection element is a linear encoder, and the second detection element is a grating ruler.

[0023] In some optional embodiments, the position detection component includes a second detection component for detecting movement in a second direction, the second detection component includes a third detection element fixed to the second mounting seat, and a fourth detection element installed on the second movable member, the fourth detection element passes through the third detection element and can move synchronously with the second movable member, and the third detection element is used to detect the movement amount of the fourth detection element.

[0024] In some optional embodiments, the second detection assembly further includes a second connecting member, the second connecting member being fixedly mounted on the second movable member, and the fourth detection element being mounted on the second connecting member; the second connecting member including second limiting portions located at opposite ends of the third detection element along the first direction, a pair of the second limiting portions limiting the relative movement range of the third detection element and the fourth detection element;

[0025] And / or, the third detection element is a linear encoder, and the fourth detection element is a grating ruler.

[0026] In some optional embodiments, a probe mounting member is further included, and the probe mounting member is fixedly connected to the detection probe.

[0027] In some optional embodiments, the probe mounting member is provided with a mounting cavity, and at least a portion of the detection probe is placed in the mounting cavity, so that the probe mounting member protects at least a portion of the detection probe; the detection end of the detection probe extends to the end of the probe mounting member, and at least a portion of the detection end of the detection probe is exposed from the probe mounting member.

[0028] In some optional embodiments, the control unit and the data processing unit are both integrated into a NI (National Instruments, National Instruments Inc., USA) controller; the NI controller includes multiple input ports and multiple output ports, the output port is connected to the driving member in the position adjustment component through a driver, and the input port is connected to the detection probe, or is connected to the position detection component through a photoelectric conversion box.

[0029] A method for measuring the magnetic field strength of an automated fully built-in superconducting magnet, which is applied to any of the above-mentioned magnetic field strength measuring devices, comprises:

[0030] Step S01: The magnetic field strength measuring device is fully built into the superconducting magnet, and a calibration device is used to detect whether the installation position of the magnetic field strength measuring device is correct; Step S02: Test information is input to the control unit, and the control unit controls the movement of the position adjustment component according to the test information;

[0031] Step S03: the position adjustment component drives the detection probe to move, and the position detection component detects the displacement and / or rotation angle of the position adjustment component and feeds back to the control unit;

[0032] Step S04: The control unit determines whether the detection probe has reached the test position based on the feedback information from the position detection component. If so, the control unit controls the position adjustment component to stop. If not, the control unit controls the position adjustment component to continue driving the detection probe to move until it reaches the test position.

[0033] Step S05: The detection probe detects the magnetic field at the coordinate point, and feeds back the detected test results to the data processing unit for processing.

[0034] In some optional embodiments, the test information includes the amount of rotation and / or movement required for the position adjustment component to move to the desired test coordinate position; the detection probe feeds back to the data processing unit one or more data of the magnetic field strength at the test position, the voltage value of the detection probe, and the temperature of the detection probe;

[0035] The control unit determines whether the displacement and / or rotation angle fed back by the position detection component is the same as the rotation and / or movement amount included in the test information, so as to determine whether the detection probe reaches the test position.

[0036] In some optional embodiments, in step S05, the detection probe performs multiple detections on the same coordinate point, and the multiple detected test data are fed back to the data processing unit for processing;

[0037] The method for measuring the magnetic field strength also includes:

[0038] Step S06: The data processing unit calculates the average value and standard deviation of the magnetic field based on the multiple test results corresponding to the same coordinate value;

[0039] When the test information includes the required rotation and / or movement amounts for multiple required test coordinate positions, steps S03 to S06 are sequentially performed according to each required coordinate position.

[0040] In some optional embodiments, the detection probe is a Hall probe; the step S05 specifically includes: the data processing unit calculates the magnetic field strength by linear interpolation according to the voltage value of the detection probe.

[0041] In some optional embodiments, the control unit and the data processing unit are both integrated into a NI controller compatible with the G language;

[0042] And / or, the test information is input into the control unit via a CSV file.

[0043] In some optional embodiments, in step S01, the detection probe is connected to a detection probe position calibration rod, and the extension direction of the detection probe position calibration rod is the same as the moving path of the detection probe; the calibration device is provided with a test slot, and the test slot is adapted to the size of the detection probe position calibration rod, and the test slot is set on the moving path of the detection probe; the position adjustment component drives the detection probe position calibration rod to move along the moving path of the detection probe, and if the position adjustment component passes through the test slot, it is judged that the installation position of the magnetic field strength measuring device is correct; otherwise, it is judged that the installation position of the magnetic field strength measuring device is offset, and the position of the magnetic field strength measuring device is adjusted.

[0044] The automated fully built-in superconducting magnet magnetic field strength measurement device and measurement method provided by this application have at least the following advantages:

[0045] By adopting the magnetic field strength measuring device of the present application, precise control of the position adjustment component can be achieved through the cooperation of the position detection component and the control unit, and automatic adjustment of the position of the detection probe can be achieved through the cooperation of the control unit and the position adjustment component, so that no manual intervention is required when adjusting the position of the detection probe, thereby improving detection efficiency and ensuring safety during measurement.

[0046] By providing a probe mounting member to mount the detection probe, the extended length range of the detection probe in the magnetic field strength measuring device can be changed by replacing the probe mounting member with different lengths; therefore, by changing the length of the probe mounting member, the magnetic field strength measuring device can perform magnetic field strength tests on superconducting magnets of different radii. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG1 is a schematic structural diagram of a magnetic field intensity measuring device according to an embodiment of the present application;

[0048] FIG2 is a schematic diagram of a partial structure of a magnetic field intensity measuring device according to an embodiment of the present application;

[0049] FIG3 is a schematic structural diagram of a rotating unit connected to an angle detection element according to an embodiment of the present application;

[0050] FIG4 is a schematic diagram of the structure of the magnetic field intensity measurement device according to an embodiment of the present application from a top view;

[0051] FIG5 is a schematic diagram of a partial structure of a magnetic field strength measurement device according to an embodiment of the present application.

[0052] FIG6 is another partial structural diagram of the magnetic field intensity measuring device according to an embodiment of the present application;

[0053] FIG7 is a schematic diagram of another portion of the structure of the magnetic field intensity measuring device according to an embodiment of the present application;

[0054] FIG8 is a schematic structural diagram of a detection probe and a probe mounting member when connected to each other according to an embodiment of the present application;

[0055] FIG9 is a partial schematic diagram of another part of the structure of the magnetic field intensity measurement device according to an embodiment of the present application;

[0056] FIG10 is a schematic structural diagram of a detection probe, a probe mounting member, and a detection probe position calibration rod when connected according to an embodiment of the present application;

[0057] FIG11 is a schematic structural diagram of a calibration device according to an embodiment of the present application;

[0058] FIG12 is a connection block diagram of a partial structure of a magnetic field intensity measurement device according to an embodiment of the present application.

[0059] In the figure: 1. Detection probe; 11. Detection end; 2. Probe mounting member; 21. Mounting cavity; 3. Position adjustment assembly; 31. First drive unit; 311. First moving member; 3111. First transmission belt; 3112. Second connecting plate; 312. Second drive member; 313. First slider; 32. Second drive unit; 321. Second moving member; 3211. Second transmission belt; 3212. Third connecting plate; 322. Third drive member; 323. Second slider; 33. Rotation unit; 331. First drive member; 332. First rotating member; 3321. Annular transmission belt; 3322. First connecting plate; 34. First mounting base; 35 , second mounting seat; 4. position detection component; 41. angle detection element; 42. first protective cover; 43. first detection component; 431. first detection element; 432. second detection element; 433. first connecting piece; 4331. first limiting part; 44. second detection component; 441. third detection element; 442. fourth detection element; 443. second connecting piece; 4431. second limiting part; 5. control unit; 51. input port; 52. output port; 6. base; 61. positioning column; 7. calibration device; 71. test slot; 8. detection probe position calibration rod; 9. data processing unit; 100. magnetic field strength measuring device. DETAILED DESCRIPTION

[0060] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures represent identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0061] The words expressing position and direction described in this application are all explained based on the accompanying drawings as examples, but can be changed as needed, and all changes are included in the scope of protection of this application.

[0062] As shown in Figures 1 to 9, an automated, fully built-in superconducting magnet magnetic field strength measurement device 100, corresponding to one embodiment of the present application, is designed to be built into a superconducting magnet to measure the magnetic field strength within the superconducting magnet. The device compares the measured magnetic field strength data with the target magnetic field strength of the superconducting magnet. If a discrepancy occurs, the device corrects the magnetic field strength of the superconducting magnet by means of magnetic field shimming or other means to bring the magnetic field strength of the superconducting magnet into line with the target magnetic field strength. The device 100 includes a base 6, a detection probe 1, a position adjustment assembly 3, a control unit 5, a position detection assembly 4, and a data processing unit 9.

[0063] The detection probe 1 is used to detect the surrounding magnetic field strength. The detection probe 1 can include two parts: a detection head and a transmission line. The detection head is located at the detection end 11 of the detection probe 1 and is used to detect the surrounding magnetic field strength. The transmission line can be connected to other devices to feed the magnetic field information detected by the detection head back to other components, such as the control unit 5.

[0064] In some possible embodiments, the detection probe 1 can be a Hall probe. The Hall probe can generate a Hall voltage due to the Hall effect in a magnetic field. After measuring the Hall voltage, the magnitude of the magnetic induction intensity can be determined based on the Hall voltage formula and the known Hall coefficient. Specifically, the Hall voltage formula is U = RHIB / h. Among them, U is the Hall voltage, RH is the Hall coefficient, I is the current, B is the magnetic field intensity, and h is the thickness of the probe. The Hall coefficient is the product of the resistivity of the Hall probe and the electron mobility. Therefore, when the magnetic field intensity changes, the Hall voltage of the Hall probe will also change, allowing the Hall probe to calculate the magnetic field intensity in which the Hall probe is located through the voltage value of the Hall probe.

[0065] The position adjustment component 3 is used to drive the detection probe 1 to move so that the detection probe 1 can be moved to multiple positions for measurement. In order to enable the detection probe 1 to measure a three-dimensional space, the position adjustment component 3 may include a first drive unit 31, a second drive unit 32, and a rotation unit 33. The first drive unit 31 is used to drive the detection probe 1 to move in the first direction, the second drive unit 32 is used to drive the detection probe 1 to move in the second direction, and the rotation unit 33 is used to drive the detection probe 1 to rotate around the first direction or the second direction. Specifically, the rotation unit 33 can drive the detection probe 1 to rotate around the first direction. The angle formed by the first direction and the second direction is 80 to 100 degrees, and preferably the first direction is perpendicular to the second direction. The position adjustment component 3 controls the freedom of movement and rotation of the detection probe 1 along the first direction, and controls the freedom of movement in the second direction, so that these three degrees of freedom of the detection probe 1 can be controlled.

[0066] The internal space of a proton accelerator is generally small, and the axial dimension of its internal space is generally within 30 mm. Therefore, the superconducting magnet and the magnetic field strength measuring device 100 installed in the superconducting magnet are also small in size. The magnetic field strength detection device in the related art can only achieve movement in two degrees of freedom, such as along one rotational degree of freedom and one translational degree of freedom. Therefore, the magnetic field strength detection device in the related art can only measure in a disk-shaped plane. The magnetic field strength measuring device 100 of the present application can achieve control of three degrees of freedom, and can control the detection probe 1 to move freely in the three-dimensional space of the superconducting magnet to detect the magnetic field in the three-dimensional space. It can perform a more comprehensive measurement of the magnetic field strength in the superconducting magnet, and can provide more accurate pre-data support for subsequent magnetic field shimming and other operations, which is convenient for adjusting the magnetic field strength in the superconducting magnet.

[0067] In some possible embodiments, when the magnetic field intensity measurement device 100 is installed on a superconducting magnet, the second direction may be parallel to or coincide with the radial direction of the superconducting magnet, and the first direction may be parallel to or coincide with the axial direction of the superconducting magnet.

[0068] In order to enable the first drive unit 31, the second drive unit 32, and the rotation unit 33 to work together, the position adjustment assembly 3 may further include a first mounting seat 34 and a second mounting seat 35. The first mounting seat 34 is mounted on the rotation unit 33 so that the rotation unit 33 can drive the first mounting seat 34 to rotate, for example, the rotation unit 33 drives the first mounting seat 34 to rotate about a first direction. The first drive unit 31 is mounted on the first mounting seat 34 so that when the first mounting seat 34 rotates, it can drive the first drive unit 31 to rotate. The first drive unit 31 may include a first moving member 311, which is connected to the second mounting seat 35 so that the second mounting seat 35 can rotate synchronously with the first drive unit 31; and the first moving member 311 can drive the second mounting seat 35 to move along the first direction. The second drive unit 32 is mounted on the second mounting seat 35 so that when the second mounting member moves or rotates, it can drive the second drive unit 32 to move or rotate synchronously. The second drive unit 32 may include a second moving member 321, which is connected to the detection probe 1 so that when the second drive unit 32 rotates or moves, it can drive the detection probe 1 to rotate or move synchronously. In addition, the second moving member 321 can drive the detection probe 1 to move along the second direction. Therefore, the first drive unit 31, the second drive unit 32, and the rotation unit 33 work together so that when any one of them moves or moves, it can drive the detection probe 1 to rotate or move.

[0069] With further reference to FIG. 2 , in some possible embodiments, the rotating unit 33 is mounted on the base 6 and may include a first driving member 331 and a first rotating member 332. The first driving member 331 is configured to drive the first rotating member 332 to rotate, specifically, to drive the first rotating member 332 to rotate in a first direction. The first rotating member 332 is connected to the first mounting base 34 so that the first rotating member 332 can drive the first mounting base 34 to rotate synchronously. Specifically, the first rotating member 332 may include an endless transmission belt 3321 and a first connecting plate 3322 fixedly connected to the endless transmission belt 3321. The endless transmission belt 3321 is connected to the first driving member 331 and can be driven by the first driving member 331 to rotate in the first direction. The first connecting plate 3322 is fixedly connected to the first mounting base 34 so that the endless transmission belt 3321 can drive the first connecting plate 3322 and the first mounting base 34 to rotate synchronously. The first driving members 331 may be provided in a plurality, preferably in an even number, and the even number of first driving members 331 may be distributed around the periphery of the endless transmission belt 3321, and the plurality of first driving members 331 may jointly or individually drive the endless transmission belt 3321 to rotate. The first driving member 331 may be a motor, and the number of the first driving members 331 may be two, four, or the like.

[0070] With further reference to FIG6 , in some possible embodiments, the first drive unit 31 may include a first moving member 311 and a second driving member 312. The first moving member 311 is connected to the second mounting base 35, specifically fixedly connected, for example, the first moving member 311 is screwed to the second mounting base 35. The second driving member 312 can be mounted on the first mounting base 34, for example, the second driving member 312 is fixedly mounted on the first mounting base 34 by screws; and the second driving member 312 is used to drive the first moving member 311 to move along the first direction. The second driving member 312 may be a motor.

[0071] In addition, to guide the movement of the first moving member 311, the first driving unit 31 may further include a first slider 313 extending along the first direction. The first slider 313 may be mounted on the first mounting base 34, for example, by screws. The first moving member 311 is provided with a slide groove that mates with the first slider 313. The first moving member 311 is slidably connected to the first slider 313, so that the first slide guides the first moving member 311.

[0072] In some possible embodiments, the first moving member 311 may include a first transmission belt 3111 extending along a first direction and a second connecting plate 3112 connected to the first transmission belt 3111. The first transmission belt 3111 is connected to the second driving member 312 so that the second driving member 312 can drive the first transmission belt 3111 to move along the first direction, and the first transmission belt 3111 drives the second connecting plate 3112 connected thereto to move synchronously. The second connecting plate 3112 is connected to the second mounting base 35 to drive the second mounting base 35 to move synchronously. The first transmission belt 3111 can be fixedly connected to the second connecting plate 3112 by bonding, screw fixing, snap-fit ​​connection, etc., or the second driving member 312 can realize belt transmission through the first transmission belt 3111 and the second connecting plate 3112.

[0073] With further reference to Figures 4 to 6, in some possible embodiments, two second connecting plates 3112 and two first sliders 313 may be provided, and the two second connecting plates 3112 may correspond one to one. The two second connecting plates 3112 may be provided on opposite sides of the second mounting base 35 along the second direction, and may also be located on opposite sides of the third direction. The third direction is substantially perpendicular to the second direction and the first direction, i.e., the angle formed between the third direction and the first direction is 80-100°, and the angle formed between the third direction and the second direction is 80-100°. The third direction is preferably perpendicular to the first direction and the second direction. It should be noted that in Figure 1, the arrow of the first direction is not limited to being only in the direction indicated by the arrow. The first direction includes not only the direction indicated by the arrow, but also the direction opposite to the arrow. Similarly, the arrows of the second and third directions are also in the same manner. Therefore, the two second connecting plates 3112 are arranged diagonally relative to the second mounting seat 35, and the two first sliders 313 correspond one-to-one with the second connecting plates 3112, that is, the two first sliders 313 are also arranged diagonally relative to the second mounting seat 35, thereby improving the stability of the second connecting plates 3112 during movement. It should be noted that the second driving member 312 and the first transmission belt 3111 can be provided as one or two. When the second driving member 312 and the first transmission belt 3111 are provided as two, the two second driving members 312 and the first transmission belt 3111 are connected to the two second connecting plates 3112 in a one-to-one correspondence. In this embodiment, the second driving member 312 and the first transmission belt 3111 can be provided as one, and the second driving member 312 and the first transmission belt 3111 are connected to any second connecting plate 3112. When the second connecting plate 3112 drives the second mounting seat 35 to move, the second mounting seat 35 will drive the other second connecting plate 3112 connected thereto to move synchronously.

[0074] With further reference to FIG. 7 , in some possible embodiments, the second drive unit 32 may include a second movable member 321 and a third drive member 322. The second movable member 321 is connected to the detection probe 1. The third drive member 322 may be mounted on the second mounting base 35, for example, by being fixed to the second mounting base 35 via screws. The third drive member 322 is configured to drive the second movable member 321 to move in the second direction. The third drive member 322 may be a motor.

[0075] In addition, to guide the movement of the second movable member 321, the second driving unit 32 may further include a second slider 323 extending along the second direction. The second slider 323 is mounted on the second mounting base 35. For example, the second slider 323 is fixed to the second mounting base 35 by screws. The second movable member 321 is provided with a sliding groove that is matched with the second slider 323, so that the second movable member 321 and the second slider 323 are slidably connected, thereby allowing the second slider 323 to guide the second movable member 321.

[0076] In some possible embodiments, the second moving member 321 may include a second transmission belt 3211 extending along the second direction and a third connecting plate 3212 connected to the second transmission belt 3211. The second transmission belt 3211 is connected to the third driving member 322 so that the third driving member 322 can drive the second transmission belt 3211 to move along the first direction, and the second transmission belt 3211 drives the third connecting plate 3212 connected thereto to move synchronously. The third connecting plate 3212 is connected to the detection probe 1 to drive the detection probe 1 to move synchronously. The second transmission belt 3211 can be fixedly connected to the third connecting plate 3212 by bonding, screwing, snap-fitting, or the like, or the third driving member 322 realizes belt transmission through the second transmission belt 3211 and the third connecting plate 3212.

[0077] With further reference to FIG8 , in some possible embodiments, the magnetic field strength measuring device 100 further includes a probe mounting member 2, through which the third connecting plate 3212 is connected to the detection probe 1. Specifically, the detection probe 1 is fixedly mounted on the probe mounting member 2, which is then fixedly mounted on the third connecting plate 3212, so that the third connecting plate 3212 can drive the probe mounting member 2 and the detection probe 1 mounted on the probe mounting member 2 to move. The detection probe 1 can be fixedly mounted on the probe mounting member 2 by screws, and at least a portion of the detection end 11 of the detection probe 1 is exposed on the probe mounting member 2 and can be in contact with the outside world, so that the detection probe 1 can detect the magnetic field; the probe mounting member 2 can be fixedly mounted on the third connecting plate 3212 by screws.

[0078] Since superconducting magnets vary in size, the size of the space required to measure each superconducting magnet is also different. The magnetic field strength measuring device 100 in the related art is a cylindrical space whose test height is parallel to the first direction and whose diameter is the maximum extension length of the detection probe 1 in the second direction. For example, if the maximum extension length of the detection probe 1 is 150 mm, the detection probe 1 can be extended and retracted between 0-150 mm, and under the action of rotation and movement in the first direction, a cylindrical detection area with a maximum detection area of ​​150 mm is formed. The difference in the size of the measurement space required for different superconducting magnets mainly lies in the change in radial space. Therefore, when the second direction is parallel to or coincides with the radial direction of the superconducting magnet, the maximum extension length of the detection probe 1 is changed, and the spatial range that the magnetic field strength measuring device 100 can be changed.

[0079] In the present application, the extension direction of the probe mounting member 2 can be parallel to the second direction. By changing the extension length of the probe mounting member 2, the maximum extension length of the detection probe 1 can be changed, thereby increasing or decreasing the maximum extension length of the detection probe 1. This allows the magnetic field strength measurement device 100 of the present application to measure superconducting magnets of different sizes by simply changing the probe mounting member 2.

[0080] In some possible embodiments, the probe mounting member 2 may further be provided with a mounting cavity 21, with at least a portion of the detection probe 1 being placed within the mounting cavity 21, so that the probe mounting member 2 can cover at least a portion of the detection probe 1 and protect the detection probe 1. Specifically, the mounting cavity 21 can be used to accommodate the transmission line of the detection probe 1. Furthermore, the mounting cavity 21 can also be used to accommodate a portion of the detection head, so that the end of the detection head used for detection can protrude from the probe mounting member 2, ensuring that the detection head can perform detection normally.

[0081] The position detection component 4 is used to detect the displacement and / or rotation angle of the position adjustment component 3 or the detection probe 1. Specifically, the position detection component 4 is used to detect the displacement and / or rotation angle of the position adjustment component 3, and the position adjustment component 3 is used to drive the detection probe 1 to move. That is, the displacement and / or rotation angle of the detection probe 1 can be obtained by the displacement and / or rotation angle of the position adjustment component 3.

[0082] In some possible embodiments, the position detection component 4 includes an angle detection element 41 , a first detection component 43 and a second detection component 44 .

[0083] Angle detection element 41 is used to detect the amount of rotation of rotation unit 33 about a first direction. Angle detection element 41 is connected to first rotating member 332 and can move synchronously with first rotating member 332. Angle detection element 41 can be a rotary encoder. Angle detection element 41 can provide feedback of the rotation angle to data processing unit 9.

[0084] With further reference to FIG3 , in some possible embodiments, the angle detection element 41 is further connected to a first protective cover (not shown), and the first protective cover covers at least a portion of the outer periphery of the angle detection element 41 to protect the angle detection element 41. The first protective cover can be fixedly connected to the first rotating member 332, for example, by interference fit, screw fixation, or the like, and a portion of the angle detection element 41 is embedded in the first protective cover, and the angle detection element 41 can be fixedly connected to the first protective cover by fasteners such as screws. When the first connecting plate 3322 rotates, the first protective cover rotates synchronously with the angle detection element 41. The first protective cover can be fixedly connected to the first connecting plate 3322 in the first rotating member 332.

[0085] 5 , the first detection component 43 is used to detect the amount of movement of the first drive unit 31 along the first direction. The first detection component 43 may include a first detection element 431 and a second detection element 432. The second detection element 432 passes through the first detection element 431 and can be driven by the first drive unit 31 to move along the first direction. At this time, the second detection element 432 and the first detection element 431 produce relative displacement. The first detection element 431 detects the amount of movement of the second detection element 432. The amount of movement of the second detection element 432 is the amount of movement of the detection probe 1 along the first direction under the drive of the first drive unit 31. The first detection component 43 can feedback the amount of movement along the first direction to the data processing unit 9.

[0086] In some possible implementations, the first detection element 431 is connected to a cable to transmit the detection signal. When the first detection element 431 moves, for example, when the rotation unit 33 drives the first mounting base 34 to rotate and the first detection element 431 to rotate synchronously, the cable connected to the first detection element 431 also moves. Therefore, to prevent the cable from being overly tightened due to the movement of the first detection element 431, a certain length of cable is reserved. In this embodiment, the first detection element 431 can be fixed to the first mounting seat 34, and the second detection element 432 can be installed on the second mounting seat 35 or the first movable member 311. By fixing the first detection element 431 to the first mounting seat 34, it is possible to avoid the first detection element 431 from generating a buffer distance due to inertia after being driven by the rotating unit 33, thereby reducing the bending radius of the cable connected to the first detection element 431 when the first detection element 431 rotates, and the first detection element 431 can be moved only by the drive of the rotating unit 33, thereby reducing the reserved length of the cable connected to the first detection element 431, and preventing excessively long cables from being entangled with other components during operation. Among them, the first detection element 431 can be fixedly installed on the first mounting seat 34 by screws, and the second detection element 432 can be specifically fixedly installed on the second mounting seat 35 by screws. In addition, the first detection element 431 can be a linear encoder, and the second detection element 432 can be a grating ruler.

[0087] In some possible embodiments, the first detection assembly 43 may further include a first connecting member 433, the first connecting member 433 is fixedly mounted on the second mounting seat 35 or the first movable member 311, and the second detection element 432 is mounted on the first connecting member 433, so that the second detection element 432 can be fixedly mounted on the second mounting seat 35 or the first movable member 311 through the first connecting member 433. Specifically, the second detection element 432 can be fixedly mounted on the second mounting seat 35 through the first connecting member 433. The first connecting member 433 may include first limiting portions 4331 located at opposite ends of the first detection element 431 along the first direction, one end of the second detection element 432 is fixedly connected to one first limiting portion 4331, and the other end is fixedly connected to the other first limiting portion 4331, wherein the second detection element 432 can be fixedly connected to the first limiting portion 4331 by a screw. When the first drive unit 31 drives the second mounting base 35 to move, the first connecting member 433 will move synchronously. At this time, the first limiting portion 4331 will move closer to or farther away from the first detection element 431. In addition, the first limiting portion 4331 may abut against the first detection element 431 under the drive of the first drive unit 31 to limit the further movement of the first detection element 431. That is, a pair of first limiting portions 4331 can limit the relative movement range of the first detection element 431 and the second detection element 432. The relative movement range is the spacing between the pair of first limiting portions 4331 along the first direction. By setting the first limiting portion 4331 for limiting, the second detection element 432 can be made to slide back and forth within a specified area, preventing the second detection element 432 from moving too far, causing the reading of the first detection component 433 to exceed the range.

[0088] In addition, in order to provide buffering when the first limiting portion 4331 contacts the first detection element 431 , a rubber buffer pad is provided on the surface of the first limiting portion 4331 facing the first detection element 431 along the first direction to buffer the impact force of the first limiting portion 4331 contacting the first detection element 431 .

[0089] In some possible embodiments, the first connecting member 433 may be an integrated structure, and the first connecting member 433 may be a U-shaped structure, and the two free ends of the U-shaped structure form two first limiting portions 4331 .

[0090] 9 , the second detection assembly 44 is used to detect the amount of movement of the second drive unit 32 along the second direction. The second detection assembly 44 may include a third detection element 441 and a fourth detection element 442. The fourth detection element 442 passes through the third detection element 441 and can be driven by the second drive unit 32 to move along the second direction. At this time, the fourth detection element 442 and the third detection element 441 produce relative displacement. The third detection element 441 detects the amount of movement of the fourth detection element 442. The amount of movement of the fourth detection element 442 is the amount of movement of the detection probe 1 along the second direction under the drive of the second drive unit 32. The second detection assembly 44 can feedback the amount of movement along the second direction to the data processing unit 9.

[0091] In some possible embodiments, the third detection element 441 is connected to a cable to transmit the detection signal. When the third detection element 441 moves, for example, when the rotation unit 33 drives the first mounting base 34 to rotate, thereby indirectly driving the second mounting base 35 to rotate, or when the first drive unit 31 drives the second mounting base 35 to move, the third detection element 441 is driven to rotate or move synchronously, and the cable connected to the third detection element 441 also moves. Therefore, to prevent the cable from being overly tightened due to the movement of the third detection element 441, a certain length of cable is reserved. In this embodiment, the third detection element 441 can be fixed to the second mounting seat 35, and the fourth detection element 442 is installed on the second movable member 321. By fixing the third detection element 441 to the second mounting seat 35, it is possible to avoid the third detection element 441 from generating a buffer distance due to inertia after the second mounting seat 35 is directly or intermittently driven by the rotation unit 33 or the first drive unit 31, thereby reducing the bending radius of the cable connected to the third detection element 441 during movement, and allowing the third detection element 441 to move without being driven by the second drive unit 32, thereby reducing the reserved length of the cable connected to the third detection element 441 and preventing an excessively long cable from being entangled with other components during operation. The third detection element 441 can be fixedly mounted on the second mounting seat 35 by screws, and the fourth detection element 442 can be fixedly mounted on the second movable member 321 by screws. Furthermore, the third detection element 441 can be a linear encoder, and the fourth detection element 442 can be a grating ruler.

[0092] In some possible embodiments, the second detection component 44 may further include a second connecting member 443, the second connecting member 443 is fixedly mounted on the second movable member 321, and the fourth detection element 442 is mounted on the second connecting member 443, so that the fourth detection element 442 can be fixedly mounted on the second movable member 321 through the second connecting member 443. Specifically, the fourth detection element 442 can be fixedly mounted on the second movable member 321 through the second connecting member 443. Wherein, the second connecting member 443 can be provided with a pair, and a pair of second connecting members 443 are arranged at opposite ends of the third detection element 441 along the second direction. One end of the fourth detection element 442 is fixedly connected to a second connecting member 443, and the other end is fixedly connected to another second connecting member 443, wherein the fixing method of the fourth detection element 442 and the second connecting member 443 can be screw fixing.

[0093] Each second connecting member 443 forms a second limiting portion 4431 towards one end of the third detecting element 441. When the second driving member 312 drives the second movable member 321 to move, the second limiting portion 4431 will be close to or away from the third detecting element 441. And, the second limiting portion 4431 may abut with the third detecting element 441 under the drive of the second driving member 312, to limit the further movement of the third detecting element 441, that is, a pair of second limiting portions 4431 can limit the relative movement range of the third detecting element 441 and the fourth detecting element 442, and this relative movement range is the spacing of a pair of second limiting portions 4431 along the second direction. By arranging the second limiting portion 4431, it is possible to make the fourth detecting element 442 slide back and forth in a specified area, prevent the moving distance of the fourth detecting element 442 from being too large, and cause the reading of the second detection assembly 44 to exceed the range.

[0094] In addition, in order to provide buffering when the second limiting portion 4431 contacts the third detection element 441, a rubber buffer pad is provided on the surface of the second limiting portion 4431 facing the third detection element 441 along the second direction to buffer the impact force of the second limiting portion 4431 contacting the third detection element 441.

[0095] The control unit 5 can be electrically connected to the position adjustment component 3 and the position detection component 4. For example, the first driving member 331, the second driving member 312, the third driving member 322, the angle detection element 41, the first detection element 431, and the third detection element 441 are all electrically connected to the control unit 5 via cables. The control unit 5 can be used to receive test information, which may include the position to be measured. After receiving the test information, the control unit 5 can send a control signal to the position adjustment component 3 according to the content of the test information to control the position adjustment component 3 to drive the detection probe 1 to move toward the position to be measured. At the same time, the position detection component 4 can detect the movement and / or rotation of the position adjustment component 3 and provide feedback to the control unit 5. The control unit 5 determines whether the movement and / or rotation of the position adjustment component 3 is correct, and can control the position adjustment component 3 to stop moving after the position adjustment component 3 moves and / or rotates to the specified position.

[0096] The data processing unit 9 may be electrically connected to the detection probe 1 and configured to receive a test result obtained by the detection probe 1. For example, the data processing unit 9 may be electrically connected to a transmission line of the detection probe 1. The test result of the detection probe 1 may be a Hall voltage value.

[0097] Referring further to Figure 12 , in some possible implementations, the control unit 5 and the data processing unit 9 are both integrated into a National Instruments (NI) controller. The NI controller can utilize the graphical programming language G, which runs within the LabVIEW environment. This facilitates subsequent expansion of the NI controller's functionality. The NI controller can include multiple input ports 51 and multiple output ports 52. The output ports 52 are connected to the drive elements in the position adjustment assembly 3 via drivers, while the input ports 51 are connected to the position detection assembly 4 or the detection probe 1 via photoelectric converters. Specifically, the first drive element 331 is connected to one output port 52 via a rotary motor driver, while the second and third drive elements 312 and 322 are each connected to one output port 52 via a linear motor driver. The angle detection element 41, the first detection element 431, and the second detection element 432 are each connected to one input port 51 via an encoder photoelectric converter. The detection probe 1 is connected to one input port 51. Furthermore, a power supply unit can be connected to and powered by the two linear motor drivers and the rotary motor driver, respectively. Another power supply unit can be connected to and powered by the three encoder photoelectric converters.

[0098] 1 , the base 6 is used to connect to the superconducting magnet, allowing the magnetic field strength measurement device 100 to be installed on the superconducting magnet. Specifically, the base 6 can be provided with a plurality of positioning posts 61, and the superconducting magnet is provided with a plurality of positioning holes. When the magnetic field strength measurement device 100 is connected to the superconducting magnet, the plurality of positioning posts 61 can be matched with the plurality of positioning holes to install the magnetic field strength measurement device 100 inside the superconducting magnet.

[0099] Since the magnetic field strength measuring device 100 of the present application needs to operate in a strong magnetic environment, the first driving member 331, the second driving member 312, and the third driving member 322 can all be piezoelectric ceramic motors; the first transmission belt 3111, the second transmission belt 3211, and the annular transmission belt 3321 can all be ceramic transmission belts; various screw fasteners can all be brass and stainless steel screws; the base 6 can be made of aluminum alloy; each moving part, slider, probe mounting member 2, rotating part, mounting seat, connector, connecting plate, etc. can all be made of FR-4 (a code name for a flame resistant material grade) material, so that the various components of the magnetic field strength measuring device 100 will not affect the magnetic field of the superconducting magnet body, thereby allowing the magnetic field strength measuring device 100 to be completely built into the superconducting magnet for measurement and to operate normally in an ultra-high magnetic field of 8 T. Among them, the ceramic motor is matched with the ceramic transmission belt, so that the movement path of the ceramic motor can be affected by the length of the ceramic transmission belt. The longer the length of the ceramic transmission belt, the larger the movement range of the ceramic motor, ensuring that the entire device can have a larger measurement range. The measuring instrument disclosed in the related art Chinese patent application CN113281686A is exposed to the outside of the superconducting magnet along the height direction. When the magnet is excited, the surrounding magnetic field strength is high, which will have a certain impact on workers exposed to the strong magnetic field. At the same time, related metal objects carried by the workers are more likely to cause major safety accidents due to the high magnetic field. In addition, the strong magnetic field also has a significant interference with electronic control equipment. The magnetic field strength measuring device 100 of the present application is fully embedded in the superconducting magnet. After being enclosed in the superconducting magnet, it does not expose the superconducting magnet along the height direction, i.e., the first direction, and is not visible to the human eye. It will define a 5 Gauss line based on the surrounding magnetic field range, for example, with a magnetic field value of 5 Gauss as the boundary. The control unit 5 is placed outside the 5 Gauss line and is connected to the motor, encoder, detection probe and other components of the magnetic field strength measuring device 100 via cables. This allows workers to control the magnetic field strength measuring device 100 from a low magnetic field installation location, avoiding safety hazards for personnel in a high magnetic field environment during magnet excitation and improving the stability of the strong magnetic field. In some embodiments, the magnetic field strength measurement device 100 of the present application is completely built into the superconducting magnet, that is, it is built into and enclosed in the superconducting magnet, with only a cable extending to the outside of the superconducting magnet. The cable is part of the superconducting magnet magnetic field strength measurement device 100.

[0100] The scale and encoder utilize a fixed encoder, with the scale moving back and forth with the slider or rail. This shortens the encoder cable length, reduces the scale's optical power consumption, and significantly improves encoder feedback accuracy. The encoder's fixed position mechanically limits the scale, achieving maximum travel range. The fixed encoder and moving scale motion facilitate protection of high-value components such as the encoder. For example, a fixed encoder refers to a rotary encoder that rotates only circumferentially and remains stationary in all other directions; a linear encoder that remains stationary in the scale's direction of travel and moves in all other directions.

[0101] The present application also provides a method for measuring magnetic field strength, which can be applied to the above-mentioned magnetic field strength measuring device 100. The method for measuring magnetic field strength may include:

[0102] Step S01: Install the magnetic field strength measuring device 100 in a superconducting magnet, and use a calibration device to detect whether the installation position of the magnetic field strength measuring device 100 is correct.

[0103] Step S02: inputting test information into the control unit 5, and the control unit 5 controls the position adjustment component 3 to move according to the test information.

[0104] Step S03 : the position adjustment component 3 drives the detection probe 1 to move, and the position detection component 4 detects the displacement and / or rotation angle of the position adjustment component 3 and feeds back to the control unit 5 .

[0105] Step S04 : the control unit 5 determines whether the detection probe 1 reaches the test position based on the feedback information from the position detection component 4 .

[0106] Step S05: The detection probe 1 detects the magnetic field at the coordinate point where it is located, and feeds back the detected test results to the data processing unit 9 for processing.

[0107] 10 and 11 , step S01 may specifically include: before testing begins, installing the magnetic field strength measurement device 100 within the superconducting magnet. First, four positioning rods are installed in the four positioning holes of the superconducting magnet. Then, the positioning posts 61 of the magnetic field strength measurement device 100 are inserted into the positioning rods, and then the positioning rods are replaced with screws.

[0108] After the base 6 of the magnetic field strength measuring device 100 is fixedly connected to the superconducting magnet, the detection probe position calibration rod 8 is installed on the probe mounting member 2. The extension direction of the detection probe position calibration rod 8 is the same as the extension direction of the probe mounting member 2, so that the detection probe position calibration rod 8 can be used as an extension rod to facilitate subsequent calibration operations. Multiple calibration devices 7 are placed on the predetermined extension path of the detection probe 1; wherein the calibration device 7 is provided with a test slot 71 that is adapted to the size of the detection probe 1, and the height of the test slot 71 is the same as the height of the predetermined extension path of the detection probe 1. Two, three, four, etc. calibration devices 7 can be provided. Then, the position adjustment component 3 is controlled to drive the probe mounting part 2 and the detection probe position calibration rod 8 to extend. If the detection probe position calibration rod 8 can pass through the test slots 71 of multiple calibration devices 7 in sequence, the installation position of the magnetic field strength measuring device 100 is correct. If the detection probe position calibration rod 8 cannot pass through the test slots 71 of multiple calibration devices 7 in sequence, the installation position of the magnetic field strength measuring device 100 is incorrect. At this time, the installation position of the magnetic field strength measuring device 100 can be adjusted by adding a gasket or other adjustment methods between the base 6 and the superconducting magnet to adjust the radial distance between the magnetic field strength measuring device 100 and the center of the superconducting magnet to 0 mm. At this time, the probe should be located at the center of the entire superconducting magnet. After the position calibration of the magnetic field strength measuring device 100 is completed, the detection probe position calibration rod 8 is removed and subsequent magnetic field detection can be carried out.

[0109] In step S02, test information may be input into the control unit 5 via a CSV (Comma-Separated Values) file. The test information may include the amount of rotation and / or movement required for the position adjustment component 3 to move to the desired test coordinate position. For example, the test information may include the angle value required for the rotation unit 33 to move to the desired test coordinate position, the required movement distance of the first drive unit 31, and the required movement distance of the second drive unit 32.

[0110] In step S04, the position detection component 4 detects the distance and / or angle change of the position adjustment component 3 and feeds it back to the control unit 5. The control unit 5 then compares the actual distance and / or angle change of the detected position adjustment component 3 with the pre-calculated distance and / or angle change to achieve precise control of the position of the detection probe 1.

[0111] In step S05, the test results of the detection probe 1 include one or more of the magnetic field strength at the test location, the voltage value of the detection probe 1, and the temperature of the detection probe 1. The detection probe 1 can directly provide feedback on the magnetic field strength or the voltage value of the detection probe 1. For example, the detection probe 1 may be a nuclear magnetic resonance probe and directly provide feedback on the magnetic field strength; or the detection probe 1 may be a Hall effect probe and provide feedback on the voltage value.

[0112] When executing the magnetic field strength measurement method, the magnetic field strength at one or more target locations can be measured. In this case, the test information in step S02 may include the required rotation and / or movement of the position adjustment component 3 corresponding to one or more coordinate values. After the detection probe 1 moves to a coordinate point to be measured, the position of the coordinate point can be detected multiple times, and the test data detected multiple times can be fed back to the data processing unit 9 for processing. After the detection probe 1 completes detection of a coordinate position, it can be moved to the next position for detection.

[0113] Step S06: The data processing unit 9 calculates the mean and standard deviation of the magnetic field based on the multiple test results corresponding to the same coordinate value. The mean value reflects the magnetic field strength at the coordinate point, while the standard deviation reflects the magnitude of the change in the coordinate point. If the standard deviation of the magnetic field strength is too large, it can be considered an anomaly, and the equipment can be adjusted and measured again.

[0114] Because some Hall probes in the related art have high test accuracy when the magnetic field strength is low, for example, when the magnetic field strength is below 3T, and when the Hall probe is in a higher magnetic field strength, for example, when the magnetic field strength is higher than 3T, the test accuracy of the Hall probe will decrease. Therefore, the error of some Hall probes in the related art may reach 10% under the higher magnetic field strength state.

[0115] In order to reduce the influence of magnetic field strength on the accuracy of Hall probe testing, the magnetic field strength can be calculated by linear interpolation. Specifically, under different magnetic field strengths, the voltage value corresponding to the detection probe 1 is measured; wherein, the selection of magnetic field strength can be selected along an arithmetic progression. Afterwards, with the voltage value as the horizontal coordinate and the magnetic field strength as the vertical coordinate, a number of scattered points can be obtained, and these scattered points are connected to form a continuous linear function. When actually performing magnetic field detection, the corresponding magnetic field strength is obtained according to the measured voltage value according to the linear function. Therefore, by calculating the magnetic field strength by linear interpolation, the measured magnetic field strength can be made closer to the actual magnetic field strength, thereby improving the measurement accuracy. And the magnetic field strength measurement method of the present application can perform high-field magnetic field strength detection. Among them, the high-field magnetic field strength is about 8T.

Claims

1. An automated fully built-in superconducting magnet magnetic field strength measurement device, wherein: include: A detection probe (1) is used to detect the surrounding magnetic field strength; A position adjustment component (3) used for driving the detection probe (1) to move; A control unit (5) is electrically connected to the position adjustment component (3), and the control unit (5) is used to receive test information and send a control signal to the position adjustment component (3) to control the movement of the position adjustment component (3); A position detection component (4) for detecting the displacement and / or rotation angle of the position adjustment component (3) or the detection probe (1), wherein the position detection component (4) is also electrically connected to the control unit (5) and is capable of sending a detection signal to the control unit (5); A data processing unit (9) is electrically connected to the detection probe (1) and is used to receive the test results obtained by the detection probe (1).

2. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 1, wherein: The position adjustment component (3) comprises a first driving unit (31), a second driving unit (32) and a rotating unit (33), wherein the first driving unit (31) is used to drive the detection probe (1) to move along a first direction, the second driving unit (32) is used to drive the detection probe (1) to move along a second direction, and the rotating unit (33) is used to drive the detection probe (1) to rotate around the first direction or the second direction; Wherein, the angle formed by the first direction and the second direction is 80-100°.

3. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 2, wherein: The position adjustment assembly (3) further comprises a first mounting seat (34) and a second mounting seat (35), wherein the first mounting seat (34) is mounted on the rotating unit (33) so that the rotating unit (33) can drive the first mounting seat (34) to rotate; the first driving unit (31) is mounted on the first mounting seat (34), and the first driving unit (31) comprises a first moving member (311), the first moving member (311) is connected to the second mounting seat (35), and can drive the second mounting seat (35) to move along a first direction; the second driving unit (32) is mounted on the second mounting seat (35), and the second driving unit (32) further comprises a second moving member (321), the second moving member (321) is connected to the detection probe (1), and can drive the detection probe (1) to move along a second direction.

4. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 3, wherein: The rotating unit (33) comprises a first driving member (331) and a first rotating member (332), wherein the first driving member (331) is used to drive the first rotating member (332) to rotate; the position detection component (4) comprises an angle detection element (41) for detecting a rotation angle, wherein the angle detection element (41) is connected to the first rotating member (332) and is capable of moving synchronously with the first rotating member (332).

5. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 4, wherein: It also includes a first protective sleeve (42), wherein the first protective sleeve (42) is sleeved on the outer periphery of the angle detection element (41) to protect the angle detection element (41); And / or, the angle detection element (41) is a rotary encoder.

6. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 3, wherein: The position detection component (4) comprises a first detection component (43) for detecting movement in a first direction, the first detection component (43) comprising a first detection element (431) fixed to the first mounting seat (34), and a second detection element (432) mounted on the second mounting seat (35) or the first moving member (311), the second detection element (432) passing through the first detection element (431) and being capable of moving synchronously with the second mounting seat (35), the first detection element (431) being used to detect the amount of movement of the second detection element (432).

7. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 6, wherein: The first detection assembly (43) further comprises a first connecting member (433), the first connecting member (433) being fixedly mounted on the second mounting seat (35) or the first moving member (311), and the second detection element (432) being mounted on the first connecting member (433); the first connecting member (433) comprises first limiting portions (4331) located at opposite ends of the first detection element (431) along a first direction, and the pair of first limiting portions (4331) limit the relative movement range of the first detection element (431) and the second detection element (432); And / or, the first detection element (431) is a linear encoder, and the second detection element (432) is a grating ruler.

8. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 3, wherein: The position detection component (4) comprises a second detection component (44) for detecting movement in a second direction, the second detection component (44) comprises a third detection element (441) fixed to the second mounting seat (35), and a fourth detection element (442) mounted on the second movable member (321), the fourth detection element (442) passes through the third detection element (441) and is capable of moving synchronously with the second movable member (321), and the third detection element (441) is used to detect the movement amount of the fourth detection element (442).

9. According to the automated fully built-in superconducting magnet magnetic field strength measuring device of claim 8, the second detection component (44) further comprises a second connecting member (443), the second connecting member (443) is fixedly mounted on the second moving member (321), and the fourth detection element (442) is mounted on the second connecting member (443); the second connecting member (443) comprises a second limiting portion (4431) located at opposite ends of the third detection element (441) along the first direction, and a pair of the second limiting portions (4431) limit the relative movement range of the third detection element (441) and the fourth detection element (442); And / or, the third detection element (441) is a linear encoder, and the fourth detection element (442) is a grating ruler.

10. The automated fully built-in superconducting magnet magnetic field strength measuring device according to claim 1, wherein: The apparatus further comprises a probe mounting member (2), wherein the probe mounting member (2) is fixedly connected to the detection probe (1), and the probe mounting member (2) is provided with a mounting cavity (21), and at least a portion of the detection probe (1) is placed in the mounting cavity (21), so that the probe mounting member (2) protects at least a portion of the detection probe (1); the detection end (11) of the detection probe (1) extends to the end of the probe mounting member (2), and at least a portion of the detection end (11) of the detection probe (1) is exposed from the probe mounting member (2); the control unit (5) and the data processing unit (9) are both integrated in an NI controller; the NI controller comprises a plurality of input ports (51) and a plurality of output ports (52), wherein the output ports (52) are connected to a driving member in the position adjustment component (3) through a driver, and the input port (51) is connected to the detection probe (1), or is connected to the position detection component (4) through a photoelectric conversion box.

11. A method for measuring the magnetic field strength of an automated fully built-in superconducting magnet, wherein: It is applied to the magnetic field strength measuring device according to any one of claims 1 to 10, and the magnetic field strength measuring method comprises: Step S01: The magnetic field strength measuring device (100) is completely built into the superconducting magnet, and a calibration device (7) is used to detect whether the installation position of the magnetic field strength measuring device (100) is correct; Step S02: inputting test information into the control unit (5), and the control unit (5) controls the position adjustment component (3) to move according to the test information; Step S03: the position adjustment component (3) drives the detection probe (1) to move, and the position detection component (4) detects the displacement and / or rotation angle of the position adjustment component (3) and feeds back to the control unit (5); Step S04: the control unit (5) determines whether the detection probe (1) has reached the test position based on the feedback information of the position detection component (4); if so, the position adjustment component (3) is controlled to stop; if not, the position adjustment component (3) is controlled to continue to drive the detection probe (1) to move until it reaches the test position; Step S05: The detection probe (1) detects the magnetic field at the coordinate point, and feeds back the detected test result to the data processing unit (9) for processing.

12. The method for measuring the magnetic field strength of an automated fully built-in superconducting magnet according to claim 11, wherein: The test information includes the rotation and / or movement amount required for the position adjustment component (3) to move to the desired test coordinate position; the detection probe (1) feeds back one or more data of the magnetic field strength at the test position, the voltage value of the detection probe (1), and the temperature of the detection probe (1) to the data processing unit (9); The control unit (5) determines whether the displacement and / or rotation angle fed back by the position detection component (4) is the same as the rotation and / or movement amount included in the test information, so as to determine whether the detection probe (1) has reached the test position.

13. The method for measuring the magnetic field strength of an automated fully built-in superconducting magnet according to claim 12, wherein: In the step S05, the detection probe (1) detects the same coordinate point position multiple times, and the test data detected multiple times are fed back to the data processing unit (9) for processing; The method for measuring the magnetic field strength also includes: Step S06: the data processing unit (9) calculates the average value and standard deviation of the magnetic field according to the multiple test results corresponding to the same coordinate value obtained; When the test information includes the rotation and / or movement amounts required for multiple required test coordinate positions, step S03 to step S06 are performed in sequence according to each required coordinate position.

14. The method for measuring the magnetic field strength of an automated fully built-in superconducting magnet according to claim 12, wherein: The detection probe (1) is a Hall probe; the step S05 specifically comprises: the data processing unit (9) calculates the magnetic field strength in a linear interpolation manner according to the voltage value of the detection probe (1).

15. The method for measuring the magnetic field strength of an automated fully built-in superconducting magnet according to claim 11, wherein: The control unit (5) and the data processing unit (9) are both integrated into a NI controller compatible with the G language; and / or, the test information is input into the control unit (5) via a CSV file; In the step S01, the detection probe (1) is connected to a detection probe position calibration rod (8), the extension direction of the detection probe position calibration rod (8) is the same as the moving path of the detection probe (1); the calibration device (7) is provided with a test slot (71), the test slot (71) is adapted in size to the detection probe position calibration rod (8), and the test slot (71) is arranged on the moving path of the detection probe (1); the position adjustment component (3) drives the detection probe position calibration rod (8) to move along the moving path of the detection probe (1); if the position adjustment component (3) passes through the test slot (71), it is determined that the installation position of the magnetic field strength measuring device (100) is correct; otherwise, it is determined that the installation position of the magnetic field strength measuring device (100) is offset, and the position of the magnetic field strength measuring device (100) is adjusted.

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