CN220439340U

CN220439340U - Space magnetic field generating device and magnetic property testing equipment

Info

Publication number: CN220439340U
Application number: CN202322131602.8U
Authority: CN
Inventors: 付婷; 王明; 杨晓蕾
Original assignee: Hikstor Technology Co Ltd
Current assignee: Hikstor Technology Co Ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2024-02-02
Anticipated expiration: 2033-08-09

Abstract

The utility model relates to the field of magnetic field generation, in particular to a space magnetic field generation device and magnetic property testing equipment, which comprises a fixing frame and a plurality of surrounding electromagnets; the surrounding electromagnets are fixedly connected to the fixing frame; the surrounding electromagnet comprises a magnetic core and a winding coil; the magnetic conduction core comprises a rod-shaped main body and a rod end bending part, and the winding coil is sleeved on the rod-shaped main body; all electromagnet central axes in the space magnetic field generating device are symmetrically distributed, and the bent parts of the rod ends point to the symmetrical axes. According to the utility model, the central axes of the peripheral electromagnets are symmetrically arranged, the rod end bending part is arranged at one end of the peripheral electromagnets, a space magnetic field is formed by the peripheral electromagnets with simple structures, the cost is low, the working stability is good, and the device to be tested is not arranged in the space surrounded by the peripheral electromagnets, but is arranged in the peripheral space of the peripheral electromagnets, so that the device to be tested with more sizes can be tested, and the universality is stronger.

Description

Space magnetic field generating device and magnetic property testing equipment

Technical Field

The utility model relates to the field of magnetic field generation, in particular to a space magnetic field generation device and magnetic property testing equipment.

Background

In the existing three-dimensional magnetic field generating method, a mode of generating a three-dimensional magnetic field by utilizing three groups of Helmholtz coils is the most common method, but the method has the same problem that the three groups of Helmholtz coils are spheres surrounded by six circular coils, the range of the applied magnetic field is limited to the center of the spheres, the smallest circular coils are inside, namely, the range of the applied magnetic field is very limited, a measured sample is required to be placed in the magnetic field, the size of a test object is strictly limited, and further the conclusion that the method for generating the magnetic field by utilizing the Helmholtz coils is poor in universality can be obtained. In addition, three groups of Helmholtz coils are complex in structure, high in maintenance cost and poor in working stability.

In the test of the anti-magnetic performance of the memory device, the space magnetic field is a necessary condition, but with the development of technology, the form of the memory device is more changeable, and in special cases, the memory device is required to be connected with other components to be put into the space magnetic field together for testing under the installation condition, namely, the volume of the object to be tested is continuously increased, and the shape is changeable.

Therefore, how to improve the space size of the installation position of the device to be tested of the space magnetic field generating device in the prior art, improve the latitude of the space magnetic field generating device to the size of the device to be tested, and improve the universality of the device is a problem to be solved by the person skilled in the art.

Disclosure of Invention

The utility model aims to provide a space magnetic field generating device and magnetic property testing equipment, which are used for solving the problems of poor tolerance of the space magnetic field generating device to the size of a device to be tested and low universality in the prior art.

In order to solve the technical problems, the utility model provides a space magnetic field generating device, which comprises a fixing frame and a plurality of surrounding electromagnets;

the surrounding electromagnets are fixedly connected to the fixing frame;

the surrounding electromagnet comprises a magnetic core and a winding coil; the magnetic conduction core comprises a rod-shaped main body and a rod end bending part, and the winding coil is sleeved on the rod-shaped main body;

all electromagnet central axes in the space magnetic field generating device are symmetrically distributed, and the bent parts of the rod ends point to the symmetrical axes.

Optionally, in the spatial magnetic field generating device, the rod end bending part is perpendicular to the rod-shaped main body.

Optionally, in the spatial magnetic field generating device, the fixing frame includes a top fixing plate;

the rod-shaped main body of the surrounding electromagnet is fixed around the top fixing plate, and the center of the top fixing plate comprises a reserved hole.

Optionally, in the spatial magnetic field generating device, the fixing frame further comprises a bottom fixing plate;

the rod-shaped main body of the surrounding electromagnet is fixed around the bottom fixing plate.

Optionally, in the spatial magnetic field generating device, the surrounding electromagnet is fixed on the bottom fixing plate and the top fixing plate through bolts and corresponding bolt connecting plates;

the bolt connecting plate is fixedly connected to the bottom fixing plate and the top fixing plate and comprises a strip-shaped slot;

the rod-shaped main body is fixed on the bolt connecting plate through a connecting bolt, and the distance between surrounding electromagnets at opposite positions can be changed by adjusting the position of the bolt in the strip-shaped slot.

Optionally, in the spatial magnetic field generating device, each connecting bolt correspondingly includes a plurality of bolt fixing positions arranged along the extending direction of the rod-shaped main body on the rod-shaped main body;

the connecting bolts can adjust the distance between the bent part of the rod end and the top fixing plate and the bottom fixing plate by selecting different bolt fixing positions.

Optionally, the spatial magnetic field generating device further comprises a central electromagnet;

the central electromagnet is fixed in the center of the area surrounded by the surrounding electromagnets through the reserved hole.

Optionally, in the spatial magnetic field generating device, a magnetic conduction plate is further included;

the magnetic conduction plate is arranged on the axis of the central electromagnet.

A magnetic performance testing device comprising an information acquisition component and the spatial magnetic field generating device according to any one of the above;

and the acquisition head of the information acquisition assembly corresponds to the setting area of the device to be detected.

Optionally, in the magnetic performance testing apparatus, the information acquisition component is fixed through a reserved hole of a top fixing plate of the spatial magnetic field generating device.

The utility model provides a space magnetic field generating device, which comprises a fixing frame and a plurality of surrounding electromagnets; the surrounding electromagnets are fixedly connected to the fixing frame; the surrounding electromagnet comprises a magnetic core and a winding coil; the magnetic conduction core comprises a rod-shaped main body and a rod end bending part, and the winding coil is sleeved on the rod-shaped main body; all electromagnet central axes in the space magnetic field generating device are symmetrically distributed, and the bent parts of the rod ends point to the symmetrical axes.

In the utility model, a plurality of peripheral electromagnets are symmetrically arranged on the central axis, and a rod end bending part is arranged at one end of each peripheral electromagnet, so that a horizontal magnetic field can be obtained at the middle point between the rod end bending parts, and if the peripheral electromagnets arranged in an aligned manner have a height difference, a vertical magnetic field can be obtained at the middle point between the height directions. The utility model also provides magnetic property testing equipment with the beneficial effects.

Drawings

For a clearer description of embodiments of the utility model or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a spatial magnetic field generating device according to an embodiment of the present utility model;

FIG. 2 is a schematic structural diagram of a spatial magnetic field generating device according to an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a spatial magnetic field generating device according to an embodiment of the present utility model;

FIGS. 4 to 7 are schematic structural views of an embodiment of a magnetic performance testing apparatus according to the present utility model;

FIGS. 8 to 11 are schematic structural views of another embodiment of the magnetic performance testing apparatus according to the present utility model;

fig. 12 to 15 are schematic structural views of a magnetic performance testing apparatus according to another embodiment of the present utility model.

The drawing comprises a 100-surrounding electromagnet, a 110-magnetic conductive core, a 120-winding coil, a 111-rod-shaped main body, a 112-rod-shaped bending part, a 200-fixing frame, a 210-top fixing plate, a 220-bottom fixing plate, a 211-reserved hole, a 310-bolt, a 320-bolt connecting plate, a 321-strip-shaped slot, a 400-central electromagnet, a 500-magnetic conductive plate, a 600-information acquisition component, a 610-microscope and a 620-Hall element.

Detailed Description

In order to better understand the aspects of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The core of the present utility model is to provide a spatial magnetic field generating device, a schematic structural diagram of one embodiment of which is shown in fig. 1, which is referred to as embodiment one, and includes a fixing frame 200 and a plurality of surrounding electromagnets 100;

the surrounding electromagnet 100 is fixedly connected to the fixing frame 200;

the surrounding electromagnet 100 includes a magnetic core 110 and a winding coil 120; the magnetic core 110 includes a rod-shaped main body 111 and a rod end bending portion, and the winding coil 120 is sleeved on the rod-shaped main body 111;

The central axis symmetry refers to that all electromagnets in the spatial magnetic field generating device are both central symmetry and axisymmetric, which requires that the spatial magnetic field generating device only comprises an even number of electromagnets, and all the figures in the utility model are taken as examples of spatial magnetic field generating devices of 4 surrounding electromagnets 100, and of course, in actual use, the number of the surrounding electromagnets 100 can be changed according to actual needs.

In the present utility model, the extending direction of the rod-shaped body 111 is generally referred to as a vertical direction, and a direction perpendicular to the vertical direction is referred to as a horizontal direction, which will not be described in detail.

The magnetic core 110 is usually an iron core, the winding coil 120 is usually a copper winding coil, and the winding coil 120 in the surrounding electromagnet 100 is connected to a power supply and a control device, and the power supply and the control device control the intensity and the direction of the magnetic field generated by different surrounding electromagnet 100 components.

The spacing between the tips of the rod-shaped bent portions 112 of different surrounding electromagnets 100 can be adjusted according to actual needs.

The device to be tested is usually disposed near the rod-shaped bending portion 112, that is, the spatial magnetic field generating device, and mainly adjusts and controls the spatial magnetic field near the rod-shaped bending portion 112 to achieve the desired effect.

Since it is generally necessary to apply currents in opposite directions to the surrounding electromagnets 100 arranged in alignment during the generation of the space magnetic field, so that the rod end bent portions of the surrounding electromagnets 100 to which currents in different directions are applied respectively emit magnetic induction lines and incident magnetic induction lines, so as to form a predetermined electromagnetic field in the vicinity of the rod end bent portions, in a preferred embodiment, the rod end bent portions are perpendicular to the rod-shaped body 111.

The rod end bending part perpendicular to the rod-shaped main body 111 greatly reduces the processing difficulty of the surrounding electromagnet 100, meanwhile, the rod-shaped main body 111 of the surrounding electromagnet 100 is usually vertically fixed on the fixing frame 200, then the rod-shaped bending parts 112 of different surrounding electromagnets 100 are positioned in the same horizontal plane and extend in opposite directions, in this case, the device to be tested is arranged at the middle point of the rod-shaped bending parts 112 of the surrounding electromagnet 100, which is electrified with current in opposite directions, so that the device to be tested can be considered to be in a magnetic field environment in the horizontal direction, the difficulty of arranging the position of the device to be tested is greatly reduced, and the simplicity of operation is improved.

In one embodiment, the mount 200 includes a top mount plate 210;

the rod-shaped body 111 of the surrounding electromagnet 100 is fixed around the top fixing plate 210, and the center of the top fixing plate 210 includes a reserved hole 211.

The top that the top fixed plate 210 indicates is the stick-shaped main part 111 of surrounding electromagnet 100 is kept away from the one end of stick-shaped kink 112, spatial magnetic field generating device is vertical in the normal condition setting, the stick-shaped main part 111 of all electromagnets extends in vertical direction, make place near stick-shaped kink 112 await measuring device possess more setting space, further reduce spatial magnetic field generating device await measuring device's size requirement promotes spatial magnetic field generating device's universality, in addition, top fixed plate 210 Zhong Kai has seted up reserved hole 211, reserved hole 211 can assist the fixed electromagnet of top fixed plate 210 dispels the heat when empty, greatly increased spatial magnetic field generating device's radiating efficiency, simultaneously, also can be as the mounting hole of device, install devices such as central electromagnet 400, or microscope 610, expand spatial magnetic field generating device's application scenario promotes the universality.

Still further, the fixing frame 200 further includes a bottom fixing plate 220;

the rod-shaped body 111 of the surrounding electromagnet 100 is fixed around the bottom fixing plate 220. After the bottom fixing plate 220 is additionally arranged, the single electromagnet is fixed by the top fixing plate 210 and the bottom fixing plate 220 at the same time, so that the extending direction of the electromagnet is ensured to be firmly fixed, the space magnetic field is further ensured to meet the design expectation, and the working stability of the space magnetic field generating device is improved.

As a specific embodiment, the device further comprises a central electromagnet 400;

the central electromagnet 400 is fixed in the center of the area surrounded by the peripheral electromagnets 100 through the reserved hole 211.

The central electromagnet 400 may provide the spatial magnetic field generating device with more degrees of freedom for generating the spatial magnetic field, referring to fig. 10, after the central electromagnet 400 is arranged, the direction of the current flowing into the central electromagnet 400 may be opposite to the direction of the current flowing into the peripheral electromagnet 100, and at this time, if the lower end of the central electromagnet 400 is located above the rod-shaped bending portion 112 of the peripheral electromagnet 100, the spatial magnetic field in the height direction may occur in the area between the lower end of the central electromagnet 400 and the rod-shaped bending portion 112 of the peripheral electromagnet 100. Of course, the central electromagnet 400 is also an electromagnet in the spatial magnetic field generating device, and the central axis symmetry principle needs to be satisfied, so the central electromagnet 400 should be disposed at the symmetry point of the surrounding electromagnets 100, and further, the central electromagnet 400 may be an electromagnet group formed by a plurality of sub-electromagnets, and still the central axis symmetry principle of the spatial magnetic field generating device needs to be satisfied.

Still further, the spatial magnetic field generating device further includes a magnetic conductive plate 500;

the magnetic conductive plate 500 is disposed on the axis of the central electromagnet 400.

Referring to fig. 13, the magnetic conductive plate 500 may further assist in setting and arranging a spatial magnetic field, as shown in fig. 13, only the central electromagnet 400 is electrified, the magnetic conductive plate 500 is disposed at the lower end of the central electromagnet 400, and the device to be tested is disposed between the magnetic conductive plate 500 and the lower end of the central electromagnet 400, so that a spatial magnetic field in a vertical direction (height direction) can be obtained, which is simple and easy to use, and improves the versatility of the spatial magnetic field generating device.

The utility model provides a space magnetic field generating device, which comprises a fixing frame 200 and a plurality of surrounding electromagnets 100; the surrounding electromagnet 100 is fixedly connected to the fixing frame 200; the surrounding electromagnet 100 includes a magnetic core 110 and a winding coil 120; the magnetic core 110 includes a rod-shaped main body 111 and a rod end bending portion, and the winding coil 120 is sleeved on the rod-shaped main body 111; all electromagnet central axes in the space magnetic field generating device are symmetrically distributed, and the bent parts of the rod ends point to the symmetrical axes. In the utility model, a plurality of peripheral electromagnets 100 are symmetrically arranged on the central axis, and a rod end bending part is arranged at one end of the peripheral electromagnets 100, so that a horizontal magnetic field can be obtained at the middle point between the rod end bending parts, and if the peripheral electromagnets 100 arranged in an aligned manner have a height difference, a vertical magnetic field can be obtained at the middle point between the height directions.

Based on the first embodiment, the fixing manner of the peripheral electromagnet 100 is further improved to obtain a second embodiment, and the structural schematic diagram is the same as that of the previous embodiment, and the description thereof is omitted, including the fixing frame 200 and a plurality of peripheral electromagnets 100;

the surrounding electromagnet 100 is fixedly connected to the fixing frame 200;

all electromagnet central axes in the space magnetic field generating device are symmetrically distributed, and the bent parts of the rod ends point to the symmetrical axes;

the fixing frame 200 includes a top fixing plate 210;

the rod-shaped main body 111 of the surrounding electromagnet 100 is fixed around the top fixing plate 210, and the center of the top fixing plate 210 includes a reserved hole 211;

the fixing frame 200 further includes a bottom fixing plate 220;

the rod-shaped body 111 of the surrounding electromagnet 100 is fixed around the bottom fixing plate 220;

the surrounding electromagnet 100 is fixed to the bottom fixing plate 220 and the top fixing plate 210 by bolts 310 and corresponding bolt connection plates 320;

the bolt connection plate 320 is fixedly connected to the bottom fixing plate 220 and the top fixing plate 210, and the bolt connection plate 320 includes a strip-shaped slot 321;

the rod-shaped body 111 is fixed to the bolt connection plate 320 by a connection bolt 310, and the distance between the surrounding electromagnets 100 in the opposite positions can be changed by adjusting the position of the bolt 310 in the bar-shaped slot 321.

The difference between this embodiment and the above embodiment is that the fixing connection means between the surrounding electromagnet 100 and the fixing frame 200 is defined in this embodiment, and the other structures are the same as those of the above embodiment, so that no redundant description is given here.

In this embodiment, the surrounding electromagnet 100 is firmly connected with the bottom fixing plate 220 and the top fixing plate 210 by bolts 310 and bolt connection plates 320, and the bolts 310 are low in cost and rapid in installation. In addition, in this embodiment, the bolt connection plate 320 is further provided with a strip slot 321, and the bolt 310 may be fixedly connected to any position of the strip slot 321, which gives the degree of freedom that the surrounding electromagnet 100 approaches or departs from the bottom fixing plate 220 and the top fixing plate 210, that is, the distance between the aligned surrounding electromagnets 100 may be adjusted, the size of the gap between the bent portions at the rod end may be adjusted, and further the size requirement on the device to be tested may be met, thereby improving the versatility of the spatial magnetic field generating device. Referring to fig. 3, among the 4 peripheral electromagnets 100 in fig. 3, 2 are located at one end of the strip-shaped slot 321 away from the fixing frame 200, and the other 2 are located at one end of the strip-shaped slot 321 close to the fixing frame 200.

Further, each of the connection bolts 310 includes a plurality of fixing positions of the bolts 310 arranged along the extending direction of the rod-shaped body 111 on the rod-shaped body 111;

the connecting bolt 310 can adjust the distance between the bent part of the rod end and the top fixing plate 210 and the bottom fixing plate 220 by selecting different fixing positions of the bolt 310.

In combination with the drawings, that is, by arranging a plurality of fixing positions of bolts 310 on the rod-shaped main body 111 (not labeled in the drawings, it can be seen from fig. 2 that the height of different peripheral electromagnets 100 after the fixing positions of the bolts 310 are adjusted), the peripheral electromagnets 100 can move up and down in the extending direction of the rod-shaped main body 111, the peripheral electromagnets 100 with height differences are conveniently formed, and the device to be tested is inserted between the rod end bending parts of the higher peripheral electromagnets 100 and the rod end bending parts of the lower peripheral electromagnets 100, so that a spatial magnetic field in the vertical direction (i.e., the height direction) can be obtained at the midpoint of the height directions of the two rod end bending parts.

The utility model also provides a magnetic performance testing device, the structure schematic diagrams of several specific embodiments of which are shown in fig. 4 to 15, comprising an information acquisition component 600 and a spatial magnetic field generating device according to any one of the above;

the collection head of the information collection assembly 600 corresponds to the set area of the device to be tested.

The information acquisition module 600 is a module for acquiring magnetic field data and magnetic performance data of the device under test, and may be a microscope 610, a hall element 620, or the like, and may be selected according to practical situations.

The information acquisition component 600 is fixed by the reserved hole 211 of the top fixing plate 210 of the spatial magnetic field generating device. The reserved hole 211 can assist heat dissipation, so as to greatly improve the working stability of the magnetic performance testing device, and meanwhile, the reserved hole 211 can be used as a mounting hole of the information acquisition component 600, see fig. 4 to 15.

Embodiments of the magnetic performance testing apparatus and corresponding structural schematic diagrams are given below in conjunction with the foregoing respective spatial magnetic field generating devices, and specific technical details may refer to the foregoing specific embodiments of the respective spatial magnetic field generating devices, which are not described herein again.

First, as shown in fig. 4 to 7, the first embodiment is a schematic structural diagram, and includes 4 peripheral electromagnets 100, which are connected to the top fixing plate 210 and the bottom fixing plate 220 by bolts 310 and corresponding bolt connection plates 320, and the rod end bending portion is perpendicular to the rod-shaped main body 111, and the information acquisition assembly 600 in this embodiment includes a microscope 610 and hall elements 620, wherein the four hall elements 620 are respectively disposed between adjacent peripheral electromagnets 100, and probes of the hall elements 620 extend toward a concentrated position of the rod end bending portion of the peripheral electromagnets 100, and are used for reading magnetic field strength of a position of a device to be tested and puncturing the device to be tested; the microscope 610 passes through the top fixing plate 210 and is fixed by the reserved hole 211, the device to be measured should be located at the center of the field of view of the microscope 610, in order to better observe the device to be measured, the microscope 610 may move in the height direction (i.e. the extending direction of the rod-shaped main body 111) through its supporting mechanism, and of course, in order to ensure that the microscope 610 can observe the device to be measured, the bottom fixing plate 220 needs to have a light-transmitting hole, or the light-transmitting bottom fixing plate 220 is selected (the method of setting a light-transmitting hole is adopted in fig. 4 to 7).

Referring to fig. 5, the winding coils 120 of a and C in the peripheral electromagnet 100 are turned on, and opposite currents are applied to the two winding coils 120, so that a horizontal space magnetic field can be generated at the device to be tested, and the device to be tested is disposed at a point which is equal to the distance between the end points of the rod-shaped bent portions 112 of a and C in the horizontal direction, preferably, below the peripheral electromagnet 100, as shown in fig. 5, it is apparent that there is no other structure barrier below the peripheral electromagnet 100, and even if the device to be tested is soldered on a PCB substrate, the whole PCB substrate can be taken into the magnetic performance testing apparatus for testing, only the midpoint of the end points of a and C in the horizontal direction needs to be ensured, and the magnetic performance testing apparatus in the present utility model has almost no limitation on the size of the sample to be tested, thereby greatly improving the versatility of the apparatus.

Referring to fig. 6 again, in fig. 6, a single-sided peripheral electromagnet 100 (for example, B, C, where a peripheral electromagnet 100C is blocked by a peripheral electromagnet 100B and is not shown in the drawing) is moved downward by a certain distance along the height direction, then the peripheral electromagnet 100 is turned on, where the current flowing in the peripheral electromagnet 100 that is not moved downward is opposite to the current flowing in the peripheral electromagnet 100 that is moved downward, and the device under test is inserted into a midpoint between the end point of the rod-shaped bent portion 112 that is moved downward and the end point of the rod-shaped bent portion 112 that is not moved downward in the horizontal direction and in the vertical direction, and at this time, the device under test is in a spatial magnetic field in the vertical direction. Fig. 7 is a bottom view of the first embodiment.

Fig. 8 to 11 are the second embodiment, most of which are the same as those of the first embodiment, and are not repeated herein, except that the microscope 610 is not installed in the reserved hole 211 of the top fixing plate 210, but the central electromagnet 400 is installed in the reserved hole 211 of the top fixing plate 210, in this embodiment, the information collecting assembly 600 is installed between the adjacent peripheral electromagnets 100, referring to fig. 8, all of the microscope 610 and the hall element 620 are installed between the adjacent peripheral electromagnets 100, and the lens of the microscope 610 and the probe of the hall element 620 extend toward the center of the rod end bending portion of the peripheral electromagnets 100.

The second embodiment generates a spatial magnetic field in the horizontal direction and the arrangement manner of the device to be tested is the same as that of the first embodiment, and is not changed (the lower end of the central electromagnet 400 is far away from the rod-shaped bending portion 112 of the peripheral electromagnet 100, and the magnetic field at the position of the device to be tested is not affected), as shown in fig. 9, but the generation of the spatial magnetic field in the vertical direction is different, the peripheral electromagnet 100 and the central electromagnet 400 need to be electrified for the generation of the spatial magnetic field in the vertical direction and the arrangement of the device to be tested, and the current flowing directions of the peripheral electromagnet 100 and the central electromagnet 400 are opposite, and the device to be tested is arranged under the central electromagnet 400, and at this time, the device to be tested is in the spatial magnetic field in the vertical direction, as shown in fig. 10, the size of the device to be tested is limited by the distance between the peripheral electromagnets 100, and can be adjusted by the bolts 310 and the bolt connection plates 320 with the strip-shaped grooves 321. Fig. 11 is a bottom view of the second embodiment.

Fig. 12 to 15 are a third embodiment, which is a three-dimensional schematic diagram of other structures except the magnetic conductive plate 500, and fig. 12 is a schematic diagram showing that only one magnetic conductive plate 500 is added in the third embodiment compared with the second embodiment, and fig. 13 is a schematic diagram showing that the device under test is disposed under the central electromagnet 400 in fig. 13, and the magnetic conductive plate 500 is disposed under the central electromagnet 400 at a position lower than the device under test, and only the central electromagnet 400 is powered on, at this time, the device under test is in a spatial magnetic field in a vertical direction; when the device to be tested needs to be placed in the space magnetic field in the horizontal direction, the central electromagnet 400 needs to be lifted in the vertical direction, so that the effect that the magnetic field (specifically, the magnetic field at the position where the device to be tested is placed) near the rod-shaped bending portion 112 of the peripheral electromagnet 100 is not affected by the magnetic core 110 of the central electromagnet 400 is achieved, and the third embodiment can be equivalently regarded as the second embodiment.

Preferably, the lower end of the central electromagnet 400 is a gradually folded tip to ensure the verticality of the magnetic field directly below the tip, so that the device to be tested is better positioned (disposed directly below the tip), as can be seen in fig. 12.

The magnetic performance testing device provided by the utility model comprises an information acquisition component 600 and the space magnetic field generating device; the collection head of the information collection assembly 600 corresponds to the setting area of the device to be tested; the space magnetic field generating device comprises a fixing frame 200 and a plurality of surrounding electromagnets 100; the surrounding electromagnet 100 is fixedly connected to the fixing frame 200; the surrounding electromagnet 100 includes a magnetic core 110 and a winding coil 120; the magnetic core 110 includes a rod-shaped main body 111 and a rod end bending portion, and the winding coil 120 is sleeved on the rod-shaped main body 111; all electromagnet central axes in the space magnetic field generating device are symmetrically distributed, and the bent parts of the rod ends point to the symmetrical axes. In the utility model, a plurality of peripheral electromagnets 100 are symmetrically arranged on the central axis, and a rod end bending part is arranged at one end of the peripheral electromagnets 100, so that a horizontal magnetic field can be obtained at the middle point between the rod end bending parts, and if the peripheral electromagnets 100 arranged in an aligned manner have a height difference, a vertical magnetic field can be obtained at the middle point between the height directions.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The space magnetic field generating device and the magnetic property testing device provided by the utility model are described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The space magnetic field generating device is characterized by comprising a fixing frame and a plurality of surrounding electromagnets;

the surrounding electromagnets are fixedly connected to the fixing frame;

2. The spatial magnetic field generating device according to claim 1 wherein the rod end bent portion is perpendicular to the rod-shaped body.

3. The spatial magnetic field generating device according to claim 1 wherein the mount comprises a top mount plate;

4. The spatial magnetic field generating device according to claim 3 wherein the mount further comprises a bottom mounting plate;

5. The spatial magnetic field generating device according to claim 4, wherein the surrounding electromagnet is fixed to the bottom fixing plate and the top fixing plate by bolts and corresponding bolt connection plates;

6. The spatial magnetic field generating device according to claim 5, wherein each of the connecting bolts comprises a plurality of bolt fixing positions arranged along the extending direction of the rod-shaped body on the rod-shaped body;

7. The spatial magnetic field generating device according to claim 3, further comprising a central electromagnet;

8. The spatial magnetic field generating device according to claim 7, further comprising a magnetically permeable plate;

9. A magnetic performance testing device, comprising an information acquisition component and the spatial magnetic field generating device according to any one of claims 1 to 8;

10. The magnetic performance testing apparatus of claim 9, wherein the information acquisition assembly is secured by a preformed hole in a top securing plate of the spatial magnetic field generating device.