Magnetic shielding testing device

Abstract

The utility model provides a magnetic shielding testing device, which relates to the technical field of magnetic shielding and comprises a supporting platform, a magnetic shielding box and a testing mechanism. A plurality of universal wheels are arranged at the bottom of the supporting platform; a plurality of first wiring through holes are formed in the top of the supporting platform; the bottom of the magnetic shielding box body is detachably connected to the top of the supporting platform; each panel of the magnetic shielding box body is provided with a plurality of second wiring through holes; the top of the magnetic shielding box body is detachably connected with a box cover; a plurality of third wiring through holes are formed in the box cover; the test mechanism comprises a test positioning bracket, a sensor test base and a fluxgate sensor; the test positioning bracket is arranged in the magnetic shielding box body; a plurality of test positioning holes are formed in the top of the test positioning bracket; and the fluxgate sensor is arranged on the sensor test base. The movable gradient magnetic testing device has the advantages that the movable gradient magnetic testing device is movable, coil threading and routing are facilitated, and gradient magnetic testing is simply and efficiently achieved through the fluxgate sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic shielding, in particular to a magnetic shielding testing device. Background Art

[0002] The electrical signals generated by the activity of neurons in the human brain form a brain magnetic field at all times, and brain magnetic signals have become an important way to explore the mysteries of the human brain. Since brain magnetic signals are extremely weak, the detection and accurate analysis of magnetic signals in the brain is a huge challenge. At present, with the development and maturity of magnetic shielding technology, it can help scientists and doctors decipher human cognition, overcome the difficulties in the diagnosis and treatment of neurological diseases such as epilepsy and depression, as well as language and movement disorders, and benefit the daily life of the public.

[0003] At present, after research at home and abroad, magnetic shielding mainly includes passive shielding and active shielding methods. Passive shielding mainly uses high magnetic permeability and high electrical conductivity materials combined with structural design to achieve magnetic shielding; active shielding mainly relies on demagnetization and magnetic compensation technology to achieve magnetic shielding. The winding method and measurement technology of the demagnetization coil are of great significance to the exploration and analysis of active shielding, so it is very necessary to design a comprehensive demagnetization test device.

[0004] At present, the demagnetization performance is verified by developing a complex magnetic shielding cabin, which results in a long development cycle and high cost. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing magnetic shielding cabin has a long development cycle and high cost. In order to overcome the above defects of the prior art, the present invention provides a movable and convenient coil threading and routing, and at the same time, the gradient magnetic test is simply and efficiently solved by a sensor test base and a fluxgate sensor, so as to achieve the purpose of quickly verifying the simulation results.

[0006] For the purpose of this utility model, the following technical solutions are adopted:

[0007] A magnetic shielding test device comprises a support platform, a hollow magnetic shielding box and a test mechanism; the support platform is provided with a plurality of universal wheels at the bottom; the support platform is provided with a plurality of first wiring through holes distributed in an array at the top; the bottom of the magnetic shielding box is detachably connected to the top of the support platform; each panel of the magnetic shielding box is provided with a plurality of second wiring through holes distributed in an array; the top of the magnetic shielding box is not closed, and a box cover for closing the magnetic shielding box is detachably connected to the top of the magnetic shielding box; the box cover is provided with a plurality of third wiring through holes distributed in an array; the test mechanism comprises a test positioning bracket, a sensor test base and a fluxgate sensor; the test positioning bracket is arranged in the magnetic shielding box; the top of the test positioning bracket is provided with a plurality of test positioning holes distributed in an array; the sensor test base is detachably connected to the top of the test positioning bracket; the sensor test base is provided with a mounting hole penetrating in a horizontal direction; the fluxgate sensor is detachably connected to the sensor test base, and the fluxgate sensor is penetrated in the mounting hole. The magnetic shielding box is supported by a supporting platform, and is convenient for disassembly and production in a detachable manner. It is also convenient for the coil to be routed on the supporting platform. The mobility of the entire device is achieved through universal wheels, which improves the convenience during use. The routing holes at various positions facilitate the coil routing and improve the convenience of routing. The sensor test base is used to position and support the fluxgate sensor, and the test positioning holes on the test positioning bracket are used to position different gradients of the X and Y axes; the sensor test base and the fluxgate sensor are conveniently matched to calibrate the bias and residual magnetism measurement.

[0008] Preferably, the sensor test base includes four test connection blocks, and the four test connection blocks are combined and connected to form a rectangular parallelepiped with a central portion passing through; a positioning groove is provided on the inner wall of the test connection block located at the top and / or bottom; the fluxgate sensor is provided with a positioning block that is positioned and matched with the positioning groove, and is threadedly connected to the positioning block through the threaded end of the connecting screw passing through the test connection block. The four test connection blocks facilitate installation and production, and the matching between the positioning groove and the positioning block facilitates the positioning of the fluxgate sensor, and the connecting screws facilitate disassembly and assembly.

[0009] Preferably, the top surface of the test connection block located at the top is provided with a plurality of first test antennae distributed in an array;

[0010] The distance between two adjacent first test antennae is equal to the distance between two adjacent test positioning holes. The first test antennae cooperate with the test positioning bracket to calibrate the bias and residual magnetism measurement.

[0011] Preferably, the bottom surface of the test connection block at the bottom is provided with a plurality of second test antennae distributed in an array;

[0012] The distance between two adjacent second test antennae is equal to the distance between two adjacent test positioning holes. The second test antennae cooperate with the test positioning bracket to calibrate the bias and residual magnetism measurement.

[0013] Preferably, the magnetic shielding box includes a magnetic shielding bottom plate and four magnetic shielding side plates; the magnetic shielding bottom plate and the four magnetic shielding side plates are combined and connected to form a hollow rectangular parallelepiped; a plurality of the second wiring through holes are arrayed on the magnetic shielding bottom plate and the four magnetic shielding side plates, and each second wiring through hole on the magnetic shielding bottom plate corresponds to each first wiring through hole one by one. The stability and support of the entire structure are improved by the rectangular magnetic shielding box.

[0014] Preferably, the upper parts of the outer walls of the four magnetic shielding side panels are all provided with lock buckles; the four sides of the box cover are all provided with bending parts; the outer walls of the bending parts are provided with locking blocks that are locked with the lock buckles; when the box cover is fixed to the magnetic shielding box body, the lock buckles are locked with the locking blocks, and the inner walls of the bending parts are abutted against the top outer walls of the magnetic shielding side panels. The cooperation between the lock buckles and the locking blocks facilitates the quick fixing and opening of the box cover, and also ensures close contact during connection, which can enhance the conductive performance of the magnetic shielding box.

[0015] Preferably, the magnetic shielding box further comprises a frame bottom plate and four frame side plates; the frame bottom plate and the four frame side plates are combined and connected to form a hollow rectangular parallelepiped; the top surface of the magnetic shielding bottom plate is fixedly connected to the bottom surface of the frame bottom plate, and the outer wall of the frame side plate is fixedly connected to the inner wall of the magnetic shielding side plate. The frame structure further improves the stability of the overall structure and the connection strength.

[0016] Preferably, the test positioning bracket includes a plurality of test support columns and a test positioning plate; the bottom of each of the test support columns is detachably connected to the magnetic shielding bottom plate; the test positioning plate is connected to the top of all the test support columns, and the test positioning plate is arranged flat in the horizontal direction; a plurality of the test positioning hole arrays are distributed on the test positioning plate, and the sensor test base is detachably connected to the top surface of the test positioning plate. The test positioning plate is fixed under the support of the test support column, and the flatness of the test positioning plate can also be ensured, thereby ensuring the accuracy and stability of the installation of the fluxgate sensor.

[0017] Preferably, the support platform includes a support bottom plate, a plurality of support columns and a support top plate; a plurality of the universal wheels are connected to the bottom surface of the support bottom plate, and a plurality of the support columns are vertically arranged on the top surface of the support bottom plate; the bottom surface of the support top plate is fixedly connected to the tops of all the support columns, and the support top plate is arranged flat in the horizontal direction; a plurality of the first wiring through-hole arrays are arranged on the support top plate. Arranging support columns by supporting the support bottom plate and the support top plate can facilitate the routing of the bottom demagnetization coil, and while supporting the magnetic shielding box, it can also achieve mobility through universal wheels, thereby improving the convenience of use.

[0018] Preferably, two symmetrical handles are provided on the top of the box cover, which facilitate the disassembly and assembly of the box cover, thereby improving overall convenience.

[0019] To sum up, the advantages of the utility model are that the magnetic shielding box is supported by a supporting platform, and it is convenient for disassembly and production in a detachable manner, and it is also convenient for the coil to be routed on the supporting platform. The mobility of the entire device is achieved through universal wheels, which improves the convenience during use. The routing holes at various positions facilitate the routing of the coil, which improves the convenience of routing. The test positioning holes on the test positioning bracket are used to position different gradients of the X and Y axes; the sensor test base is used to position and support the fluxgate sensor, and the double-sided feelers cooperate with the test positioning bracket to calibrate the bias and residual magnetism measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a magnetic shielding test device of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the magnetic shielding test device of the utility model;

[0022] Figure 3 It is an exploded view of the magnetic shielding box of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the testing mechanism of the utility model;

[0024] Figure 5 It is an exploded view of the sensor test base of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the support platform of the utility model.

[0026] Description of reference numerals:

[0027] 1. Support platform; 10. First wiring through hole; 11. Support bottom plate; 12. Support column; 13. Support top plate; 2. Magnetic shielding box; 20. Second wiring through hole; 21. Magnetic shielding bottom plate; 22. Magnetic shielding side plate; 23. Frame bottom plate; 24. Frame side plate; 3. Test mechanism; 31. Test positioning bracket; 311. Test support column; 312. Test positioning plate; 30. Test positioning hole; 32. Sensor test base; 320. Mounting hole; 321. Test connection block; 322. Positioning groove; 323. First test feeler; 324. Second test feeler; 33. Fluxgate sensor; 331. Positioning block; 34. Connecting screw; 4. Universal wheel; 5. Box cover; 50. Third wiring through hole; 51. Bending part; 511. Lock block; 52. Handle; 6. Lock buckle. DETAILED DESCRIPTION

[0028] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0029] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0030] In the embodiments of the present application, unless otherwise clearly specified or limited, a first feature is "on" a second feature.

[0031] Or "below" can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 6As shown, a magnetic shielding test device includes a supporting platform 1, a hollow magnetic shielding box 2 and a testing mechanism 3; four silent universal wheels 4 are arranged at the bottom of the supporting platform 1, and the four universal wheels 4 are respectively arranged at the four corners of the bottom of the supporting platform 1, so as to facilitate movement and improve the convenience of use. The top of the support platform 1 is provided with a plurality of first wiring through holes 10 in an array; the bottom of the magnetic shielding box 2 is detachably connected to the top of the support platform 1 by means of screws; each panel of the magnetic shielding box 2 is provided with a plurality of second wiring through holes 20 in an array; the top of the magnetic shielding box 2 is not closed, and a box cover 5 for closing the magnetic shielding box 2 is detachably connected to the top of the magnetic shielding box 2 by means of screws; the box cover 5 is made of Permalloy material, and a plurality of third wiring through holes 50 are provided in an array on the box cover 5; the test mechanism 3 includes a test positioning bracket 31, a sensor test base 32 and a fluxgate sensor 33; the test positioning bracket 31 is arranged in the magnetic shielding box 2; a plurality of test positioning holes 30 are provided on the top of the test positioning bracket 31; the sensor test base 32 is fixedly connected to the top of the test positioning bracket 31; a penetrating mounting hole 320 is provided on the sensor test base 32; the fluxgate sensor 33 is horizontally penetrated in the mounting hole 320. The magnetic shielding box 2 is supported by the support platform 1, and is convenient for disassembly and production in a detachable manner, and also convenient for routing the coil on the support platform 1. The mobility of the entire device is achieved through the universal wheel 4, which improves the convenience during use. The routing holes at various positions facilitate the routing of the coil, which improves the convenience of routing. The test positioning bracket 31 is used to position different gradients of the X and Y axes; the sensor test base 32 is used to support and position the fluxgate sensor 33, and the sensor test base 32 and the fluxgate sensor 33 cooperate with each other to calibrate the bias and residual magnetism measurement.

[0034] like Figures 1 to 3As shown, the magnetic shielding box 2 includes a magnetic shielding bottom plate 21 and four magnetic shielding side plates 22; the magnetic shielding bottom plate 21 and the four magnetic shielding side plates 22 are combined and connected to form a hollow rectangular parallelepiped with an unclosed top; a plurality of second wiring through holes 20 are arranged in an array on the magnetic shielding bottom plate 21 and the four magnetic shielding side plates 22, and each second wiring through hole 20 on the magnetic shielding bottom plate 21 corresponds to each first wiring through hole 10 one by one, so as to facilitate alignment and threading and prevent wiring confusion. The stability and support of the entire structure are improved by the rectangular magnetic shielding box 2. The magnetic shielding box 2 also includes a frame bottom plate 23 and four frame side plates 24, and the frame bottom plate 23 and the four frame side plates 24 are all made of Permalloy material. The frame bottom plate 23 and the four frame side plates 24 are combined and connected to form a hollow rectangular parallelepiped; the top surface of the magnetic shielding bottom plate 21 is fixedly connected to the bottom surface of the frame bottom plate 23; the outer wall of each frame side plate 24 is fixedly connected to the inner wall of the magnetic shielding side plate 22. The frame structure further supports the plate on the magnetic shielding box 2, thereby further improving the stability of the overall structure and the connection strength.

[0035] like Figures 1 to 3 As shown, the upper part of the outer wall of the four magnetic shielding side plates 22 is provided with a lock 6; the four sides of the box cover 5 are provided with a bent portion 51 bent downward at 90°; the outer wall of the bent portion 51 is provided with a locking block 511 that is locked with the lock 6; when the box cover 5 is fixed to the magnetic shielding box body 2, the lock 6 is locked with the locking block 511, and the inner wall of the bent portion 51 is abutted against the top outer wall of the magnetic shielding side plate 22. Through the cooperation of the lock 6 and the locking block 511, it is convenient to quickly fix and open the box cover 5, and at the same time ensure that the bent portion 51 of the box cover 5 is in full contact with the top Permalloy, thereby enhancing the conductive performance of the magnetic shielding box.

[0036] like Figures 4 to 5 As shown, the test positioning bracket 31 includes a plurality of test support columns 311 and a test positioning plate 312; the bottom of each test support column 311 is detachably connected to the magnetic shielding bottom plate 21 by screw connection; the test positioning plate 312 is connected to the top of all the test support columns 311, and the test positioning plate 312 is arranged in a flat shape, and the test positioning plate 312 is used to position different gradients of the X and Y axes; a plurality of test positioning holes 30 are arranged in an array on the test positioning plate 312, and the sensor test base 32 is fixedly connected to the top surface of the test positioning plate 312. The test positioning plate 312 is kept fixed under the support of the test support column 311, and the flatness of the test positioning plate 312 can also be ensured, thereby ensuring the accuracy and stability of the installation of the fluxgate sensor 33.

[0037] like Figures 4 to 5As shown, the sensor test base 32 includes four test connection blocks 321, and the four test connection blocks 321 are combined and connected to form a rectangular parallelepiped with a central portion; the inner surface of the test connection block 321 located at the bottom and / or the top is provided with a positioning groove 322 in the left and right directions; the fluxgate sensor 33 adopts the Mag-13MS fluxgate sensor, and the bottom of the fluxgate sensor 33 is provided with a positioning block 331 that is positioned and matched with the positioning groove 322, and the positioning block 331 is provided with a screw connection hole, and the threaded end of the connecting screw 34 passes through the test connection block 321 and is threadedly connected to the positioning block 331. By providing the positioning grooves 322 at both the bottom and the top, it is convenient to achieve positioning and installation on both sides during installation, thereby improving convenience. The four test connection blocks 321 facilitate installation and production, and at the same time, the positioning and matching between the positioning grooves 322 and the positioning blocks 331 facilitate the positioning and fixing of the fluxgate sensor 33. The top surface of the test connection block 321 at the top is provided with four first test antennae 323 distributed in an array; and the distance between two adjacent first test antennae 323 is equal to the distance between two adjacent test positioning holes 30. The bottom surface of the test connection block 321 at the bottom is provided with four second test antennae 324 distributed in an array; and the distance between two adjacent second test antennae 324 is equal to the distance between two adjacent test positioning holes 30. The sensor test base 32 cooperates with the test positioning plate 312 through the double-sided antennae to calibrate the bias and residual magnetism measurement, realizing two-side testing, further ensuring the test accuracy, and preventing the test error caused by a single test.

[0038] like Figure 6 As shown, the support platform 1 includes a support base plate 11, four support columns 12 and a support top plate 13; the support base plate 11 is made of thickened aluminum plate, which is used to place test tools and enhance the stability of the magnetic shielding box during movement. Four universal wheels 4 are connected to the bottom surface of the support base plate 11, and four support columns 12 are vertically arranged on the top surface of the support base plate 11; the support top plate 13 is made of Permalloy material, and the bottom surface of the support top plate 13 is fixedly connected to the top of all support columns 12. The support top plate 13 is supported by the support columns 12, and the support top plate 13 is placed horizontally and flatly. A plurality of first wiring through holes 10 are arranged in an array on the support top plate 13. The arrangement of the support columns 12 by the support base plate 11 and the support top plate 13 can facilitate the wiring of the bottom demagnetization coil, and while supporting the magnetic shielding box 2, it can also achieve mobility through the universal wheels 4, thereby improving the convenience of use.

[0039] like Figures 1 to 3 As shown, two symmetrically arranged handles 52 made of plastic material are arranged on the top of the box cover 5. The handles 52 facilitate the disassembly and assembly of the box cover 5, thereby improving the overall convenience.

[0040] During the test, the fluxgate sensor 33 is positioned and installed in the mounting hole 320 of the sensor test base 32, and the fluxgate sensor 33 and the sensor test base 32 are fixed by connecting screws 34. The array-arranged test positioning holes 30 are equivalent to the X and Y axes. By inserting the four antennae on the sensor test base 32 into different test positioning holes 30, different gradient positioning is performed, thereby facilitating the coordination of the sensor test base 32 and the fluxgate sensor 33 to calibrate the bias and residual magnetism measurement, and taking the average value through double-sided testing to further improve the accuracy of the test and prevent the test error caused by single-sided testing.

[0041] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0042] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A magnetic shielding test device, characterized in that: The invention comprises a support platform (1), a hollow magnetic shielding box (2) and a testing mechanism (3); the bottom of the support platform (1) is provided with a plurality of universal wheels (4); the top of the support platform (1) is provided with a plurality of first wiring through holes (10) distributed in an array; the bottom of the magnetic shielding box (2) is detachably connected to the top of the support platform (1); each panel of the magnetic shielding box (2) is provided with a plurality of second wiring through holes (20) distributed in an array; the top of the magnetic shielding box (2) is not closed, and a box cover (5) for closing the magnetic shielding box (2) is detachably connected to the top of the magnetic shielding box (2); the box cover (5) is provided with a plurality of third wiring through holes distributed in an array. The test mechanism (3) comprises a test positioning bracket (31), a sensor test base (32) and a fluxgate sensor (33); the test positioning bracket (31) is arranged in a magnetic shielding box (2); a plurality of test positioning holes (30) distributed in an array are arranged on the top of the test positioning bracket (31); the sensor test base (32) is detachably connected to the top of the test positioning bracket (31); a mounting hole (320) penetrating in a horizontal direction is arranged on the sensor test base (32); the fluxgate sensor (33) is detachably connected to the sensor test base (32), and the fluxgate sensor (33) is arranged in the mounting hole (320).

2. The magnetic shielding test device according to claim 1, characterized in that: The sensor test base (32) comprises four test connection blocks (321), and the four test connection blocks (321) are combined and connected to form a rectangular parallelepiped with a central portion passing through; a positioning groove (322) is provided on the inner wall of the test connection block (321) located at the top and / or the bottom; a positioning block (331) is provided on the fluxgate sensor (33) and is positioned and matched with the positioning groove (322), and is threadedly connected to the positioning block (331) by passing the threaded end of the connecting screw (34) through the test connection block (321).

3. The magnetic shielding test device according to claim 2, characterized in that: The top surface of the test connection block (321) located at the top is provided with a plurality of first test antennae (323) distributed in an array; and the distance between two adjacent first test antennae (323) is equal to the distance between two adjacent test positioning holes (30).

4. The magnetic shielding test device according to claim 2 or 3, characterized in that: The bottom surface of the test connection block (321) at the bottom is provided with a plurality of second test antennae (324) distributed in an array; and the distance between two adjacent second test antennae (324) is equal to the distance between two adjacent test positioning holes (30).

5. The magnetic shielding test device according to claim 1, characterized in that: The magnetic shielding box (2) comprises a magnetic shielding bottom plate (21) and four magnetic shielding side plates (22); the magnetic shielding bottom plate (21) and the four magnetic shielding side plates (22) are combined and connected to form a hollow rectangular parallelepiped; a plurality of second wiring through holes (20) are arranged in an array on the magnetic shielding bottom plate (21) and the four magnetic shielding side plates (22), and each second wiring through hole (20) on the magnetic shielding bottom plate (21) corresponds one-to-one to each first wiring through hole (10).

6. The magnetic shielding test device according to claim 5, characterized in that: The upper parts of the outer walls of the four magnetic shielding side panels (22) are all provided with lock buckles (6); the four side edges of the box cover (5) are all provided with bending parts (51); the outer walls of the bending parts (51) are provided with locking blocks (511) that are locked with the lock buckles (6); when the box cover (5) is fixed to the magnetic shielding box body (2), the lock buckles (6) are locked with the locking blocks (511), and the inner walls of the bending parts (51) are abutted against the top outer walls of the magnetic shielding side panels (22).

7. The magnetic shielding test device according to claim 5, characterized in that: The magnetic shielding box (2) also includes a frame bottom plate (23) and four frame side plates (24); the frame bottom plate (23) and the four frame side plates (24) are combined and connected to form a hollow rectangular parallelepiped; the top surface of the magnetic shielding bottom plate (21) is fixedly connected to the bottom surface of the frame bottom plate (23), and the outer wall of the frame side plate (24) is fixedly connected to the inner wall of the magnetic shielding side plate (22).

8. The magnetic shielding test device according to claim 5, characterized in that: The test positioning bracket (31) comprises a plurality of test support columns (311) and a test positioning plate (312); the bottom of each of the test support columns (311) is detachably connected to the magnetic shielding bottom plate (21); the test positioning plate (312) is connected to the top of all the test support columns (311), and the test positioning plate (312) is arranged flat in a horizontal direction; a plurality of the test positioning holes (30) are distributed in an array on the test positioning plate (312), and the sensor test base (32) is detachably connected to the top surface of the test positioning plate (312).

9. The magnetic shielding test device according to claim 1, characterized in that: The support platform (1) comprises a support base plate (11), a plurality of support columns (12) and a support top plate (13); a plurality of the universal wheels (4) are connected to the bottom surface of the support base plate (11), and a plurality of the support columns (12) are vertically arranged on the top surface of the support base plate (11); the bottom surface of the support top plate (13) is fixedly connected to the tops of all the support columns (12), and the support top plate (13) is arranged flat in a horizontal direction; and a plurality of the first wiring through holes (10) are arranged in an array on the support top plate (13).

10. The magnetic shielding test device according to claim 1, characterized in that: Two symmetrical handles (52) are arranged on the top of the box cover (5).

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