CN217656565U

CN217656565U - Dynamic magnetic suspension device

Info

Publication number: CN217656565U
Application number: CN202221359919.6U
Authority: CN
Inventors: 吴建祥
Original assignee: Shenzhen Xuanfu Technology Co ltd
Current assignee: Shenzhen Xuanfu Technology Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-10-25
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a dynamic magnetic suspension device, which comprises a base and a suspension body which have magnetic repulsion, wherein a first magnetic force resisting the dead weight of the suspension body is generated between the base and the suspension body, an attraction medium body is arranged in the base, and a second magnetic force resisting the rollover of the suspension body is generated between the attraction medium body and the suspension body; a reference position resetting device is arranged in the base; the control circuit enables the reference position resetting device to generate a third magnetic force for controlling the suspension body to be stably reset. The utility model discloses adopt brand-new combination in the aspect of spatial structure, selected material, let whole active magnetic suspension device not only with low costs, the rotational speed is controllable moreover, is rich in the sensation of movement, brings brand-new experience for the sight of magnetic suspension product. Meanwhile, the technical problem that the traditional magnetic suspension product is difficult to place is solved, and conditions are created for the large-scale popularization and use of the magnetic suspension product.

Description

Dynamic magnetic suspension device

Technical Field

The utility model relates to a magnetic suspension control technical field, concretely relates to active magnetic suspension device.

Background

The magnetic suspension products in the current market mainly have two defects, one is that the suspension body is difficult to place, and the placement skill is difficult to grasp for a novice, so that the use experience of consumers is poor; secondly, the suspension body can only rotate ceaselessly, and the rotating speed is not adjustable, so that the ornamental experience is lacked, and the functional widening application is restricted.

The patent application of the Chinese utility model (application number 200610065336.1) discloses a magnetic repulsion type suspension device, which adopts an annular ferrite magnet, and has a small structure head and a large foot, so that the appearance is not harmonious and the viewing experience is not good. The chinese utility model patent application (application number 201910603771.2) discloses "a dynamic magnetic levitation device", though the inconsistent problem of outward appearance has been solved effectively, the uncontrollable problem of its magnetic levitation product rotation has not been solved. Chinese utility model patent application (application number 201910933498. X) discloses a "active magnetic suspension device and rotary lifting mechanism thereof", has adopted automatic lifting mechanism, though solved effectively that the suspension product is placed difficult problem, nevertheless too complicated because of its structure causes the cost to sharply rise, and the product selling unit price doubles and improves to influence the outward appearance, cause the difficulty for using widely.

In summary, there is a need for a dynamic magnetic levitation device with more reasonable structure and cost design, easy placement and easy rotation control.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the suspension body of the existing magnetic suspension product is difficult to place, the rotating speed is uncontrollable, the cost is high and the popularization is difficult.

In order to solve the technical problem, the technical solution of the present invention is to provide a dynamic magnetic suspension device, which comprises a base and a suspension body that have magnetic repulsion property, the base and the suspension body are oppositely arranged from bottom to top, a first magnetic force resisting the self weight of the suspension body is generated between the base and the suspension body,

an attractive medium body is arranged in the base, and the attractive medium body and the suspension body are mutually attracted to generate a second magnetic force resisting the side turning of the suspension body;

a reference position resetting device is arranged in the base;

and a control circuit connected with the reference position resetting device is also arranged in the base, and the control circuit enables the reference position resetting device to generate a third magnetic force for controlling the suspension body to be stably reset.

In the above solution, a first repulsive magnet is disposed in the base, a second repulsive magnet is disposed in the suspension, the first repulsive magnet and the second repulsive magnet have magnetic repulsion therebetween, and the reference position resetting device is a plurality of electromagnets respectively disposed along the periphery of the inner axis of the base.

In the above solution, an X-axis coordinate line and a Y-axis coordinate line are arranged along the inner axial plane of the base, the control circuit detects the distance of the suspension body relative to the axial reference position along the X-axis and the Y-axis directions, respectively, and causes the reference position resetting device to generate a third magnetic force that pulls the suspension body to the axial reference position, the number of the reference position resetting devices is 4, and 2 reference position resetting devices are arranged along the X-axis and the Y-axis directions of the base, respectively, and are connected in series with the two reference position resetting devices on the X-axis or the Y-axis.

In the above solution, the base is provided with magnetic sensors for detecting distances of the suspension body with respect to a reference position of the axis, corresponding to the X-axis and the Y-axis directions, the control circuit is connected to the magnetic sensors, the magnetic sensors on the X-axis are arranged corresponding to 2 reference position resetting devices on the X-axis, the magnetic sensors on the Y-axis are arranged corresponding to 2 reference position resetting devices on the Y-axis, and the magnetic sensors are detachably arranged in the base.

In the above scheme, the control circuit comprises sensor signal detection circuit, amplifier circuit and power amplifier circuit that connect gradually, sensor signal detection circuit, amplifier circuit, power amplifier circuit are parallelly connected with power supply circuit respectively, magnetic sensor is linear sensor, sensor signal detection circuit according to the distance value that magnetic sensor detected to amplifier circuit output corresponding voltage value, amplifier circuit carries out after the voltage signal amplification output to power amplifier circuit, and makes power amplifier circuit drive reference position resetting means produces corresponding third magnetic force.

In the above-mentioned scheme, one or more dynamic electromagnetic control devices are built in the base, and a fourth magnetic force for controlling the suspension body to generate action is generated.

In the above scheme, the dynamic electromagnetic control device is connected to the control circuit, and the plurality of dynamic electromagnetic control devices are sequentially arranged around the central axis of the base.

In the above scheme, a fixing plate is arranged in the base, and all the components in the base are respectively fixed or detachably arranged on the fixing plate.

In the above scheme, a lifting mechanism is arranged in the base, the lifting mechanism is respectively connected to the control circuit and the first repulsion magnet, and the lifting mechanism controls the first repulsion magnet to vertically lift.

In the above scheme, the first repulsive magnet is fixed at a position on the axis thereof, and the fixed position of the first repulsive magnet is higher than, lower than or flush with the upper surface of the electromagnet.

In the above scheme, the attraction medium body is a non-magnetic electrolytic iron, a permanent magnet or a material capable of attracting the suspension body, the attraction medium body is in an annular shape or a plurality of cylinders and square columns arranged in a similar annular shape, or the attraction medium body is a matched annular iron ring and a matched round iron column, the upper surface of the attraction medium body is a plane, an inclined plane, an arc surface or a wavy surface, and the attraction medium body is fixed in the base or is independently fixed on a plastic support.

In the above scheme, the first repulsive magnet is a permanent magnet or an energized electromagnet, the second repulsive magnet is a permanent magnet, and the electromagnet is a structure in which an iron core is arranged in the middle and a coil is wound outside or a coil without an iron core.

The utility model discloses, adopt brand-new combination of arranging in the space, choose the gravitation medium body for use simultaneously, let whole active magnetic suspension device reasonable more, compact to the rotatory rotational speed of suspension is controllable, and control is more stable.

Drawings

FIG. 1 is a schematic side view of the magnetic force distribution of the present invention;

fig. 2 is a top view of the base of the present invention;

FIG. 3 is a perspective view of the base of the present invention;

fig. 4 is a control flow chart of the middle circuit of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The utility model discloses a dynamic magnetic suspension device, technical personnel in the field can borrow from this paper content for reference, suitably improve technological parameter and realize. It is expressly noted that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be included in the invention and it is apparent to those skilled in the art that the inventive technique can be practiced and applied by modifying or appropriately combining the teachings herein without departing from the spirit and scope of the invention.

In the present application, unless otherwise specified, scientific and technical terms used herein have the meanings as commonly understood by one of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that, in the description of the present invention, the terms "first" and "second" are only used for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Generally, for the product to be suspended in the air smoothly, 3 conditions must be met: 1, the suspension base provides repulsion force to counteract the gravity of the product to be suspended, so that the suspension body floats. 2, in order to raise the suspension height as much as possible and enhance the ornamental value, the magnet is usually placed under the product to be suspended, so that the center of gravity of the product is higher than that of the magnet, the product is easy to turn on one's side, and the suspension base must provide the force for resisting the turning on one's side. 3, the gravity center of the product is required to be on the center line of the repulsion force of the suspension base, otherwise, the product can shift and fall to be adsorbed on the base.

As shown in fig. 1 to 4, the utility model provides a dynamic magnetic suspension device, including base 1 and the suspensoid 2 that have the magnetic repulsion nature each other, base 1 and suspensoid 2 are from bottom to top relative arrangement, preferably have built-in first repulsion magnet 11 along the axis of base 1, have built-in second repulsion magnet 21 along the axis of suspensoid 2, the upper surface of first repulsion magnet 11 has the magnetic repulsion nature and produces the first magnetic force F1 that resists the self-weight of suspensoid 2 with the magnetism of the lower surface of second repulsion magnet 21 the same, first magnetic force F1 can let suspensoid 2 float in the predetermined reference position above base 1, first repulsion magnet 11 and second repulsion magnet 21 are usually respective upper and lower surface magnetism opposite.

The attraction medium body 12 is arranged along the base 1, the central axis of the attraction medium body 12 is generally overlapped with the central axis of the base 1, the attraction medium body 12 and the second repulsion magnet 21 attract each other to generate a second magnetic force F2 resisting the side turning of the suspension body 2, the second magnetic force F2 can effectively prevent the suspension body 2 from turning in a vertical plane, and the axis of the suspension body 2 is kept vertical.

An ideal state position when the base 1 and the suspension body 2 are stably suspended can be set as a reference position, a reference position resetting device is arranged in the base 1, preferably, the reference position resetting device is a plurality of electromagnets 13 respectively arranged along the periphery of the inner axis of the base 1, and a control circuit connected with the electromagnets 13 is further arranged in the base 1; specifically, preferably, an X-axis coordinate line and a Y-axis coordinate line are set along an inner axial plane of the

base

1, 2 electromagnets 13 are respectively arranged in the base 1 along the X-axis and the Y-axis, and are generally symmetrically arranged along the Y-axis and the X-axis, two electromagnets 13 on the X-axis or the Y-axis are connected in series and are respectively located at two sides of the axial center, the distances of the second repulsive magnets 21 relative to the axial center reference position in the X-axis and Y-axis directions are respectively detected by the control circuit, and third magnetic forces F3 with opposite magnetism are generated, and the control circuit enables the electromagnets 13 to generate third magnetic forces F3 for pulling the suspension 2 to the axial center reference position for stable resetting.

The magnetic sensors 14 for detecting the reference distance of the second repulsive magnet 21 relative to the axis are respectively arranged in the base 1 corresponding to the X-axis direction and the Y-axis direction, the control circuit is respectively connected with each magnetic sensor 14, the magnetic sensor 14 on the X-axis is arranged corresponding to 2 electromagnets 13 on the X-axis, the magnetic sensor 14 on the Y-axis is arranged corresponding to 2 electromagnets 13 on the Y-axis, the magnetic sensor 14 is preferably in a plug-in type, and the magnetic sensor 14 is detachably arranged on the fixing plate 15 in a plug-in manner.

The action principle of the electromagnet 13 is that when a control circuit gives a control current to the electromagnet, the upper ends of the two electromagnets 13 on the X axis or the Y axis are opposite in magnetism, so that a resultant force is generated on the suspension body 2, and the movement of the suspension body 2 in the direction of X, Y is controlled.

Thus, the suspension body 2 stably suspends a certain preset position above the base 1 under the three forces of the upper surfaces F1, F2 and F3.

The utility model discloses circuit control does: the control circuit is composed of a sensor signal detection circuit 16, an amplification circuit 17 and a power amplifier circuit 18 which are connected in sequence, the sensor signal detection circuit 16, the amplification circuit 17 and the power amplifier circuit 18 are respectively connected with a power circuit 19 in parallel, the magnetic sensor 14 is a linear sensor, the sensor signal detection circuit 16 outputs a corresponding voltage value to the amplification circuit 17 according to a distance value detected by the magnetic sensor 14, the amplification circuit 17 amplifies the voltage signal and outputs the amplified voltage signal to the power amplifier circuit 18, and the power amplifier circuit 18 drives the electromagnet 13 to generate a corresponding third magnetic force F3.

The utility model discloses in, control circuit guarantees that gravity is with the concrete principle of repulsion on same straight line: supposing that the suspension body deviates by delta X along the positive direction of the X axis, because the movement of the suspension body inevitably causes the change of a magnetic field, then the magnetic sensor arranged in the middle of the X axis can sense the deviation delta X, further the deviation delta X is converted into a voltage V with a corresponding size and output to the control circuit, the control circuit receives the weak voltage signal and then amplifies the weak voltage signal, then the power amplification circuit is driven, the power amplification circuit provides strong current to drive 2 electromagnets in the X direction, and the 2 electromagnets generate magnetic force to pull the suspension body back to the central position (delta X → 0) together; similarly, the levitation body is stably controlled on the axis position of the base by the control circuit, when the levitation body is stably levitated in the center, the control circuit does not work much, and the power consumption is low.

The base 1 is preferably provided with a fixing plate 15 inside, the first repulsive magnet 11, the attractive force medium body 12, the electromagnet 13, the magnetic sensor 14, the dynamic electromagnet 131 and the control circuit are respectively fixed or detachably arranged on the fixing plate 15 as required, generally, the fixing plate 15 is a main board, the control circuit can be separated from the fixing plate 15, a control circuit main board is additionally arranged, and the first repulsive magnet 11, the attractive force medium body 12, the electromagnet 13, the magnetic sensor 14 and the dynamic electromagnet 131 can be fixed on the plastic bracket alone or in combination.

The first repulsion magnet is a permanent magnet or an electrified electromagnet, and the second repulsion magnet is a permanent magnet generally, preferably a cylinder, and can also be other bodies such as a square cylinder and the like. The suspension body is a sphere, a cube or an irregular shape. The attraction medium body is generally annular, can also be in other shapes similar to the annular shape, can also be formed by a plurality of round iron columns, fang Tiezhu and the like which are arranged into a similar annular shape, and can even be used by matching an annular iron ring with the round iron columns simultaneously to achieve a certain specific function. The upper surface of the attraction medium body can be a plane, an inclined plane, a cambered surface or a wavy surface and the like according to the appearance requirement. The attraction medium body 12 is a non-magnetic electrolytic iron or a permanent magnet or a material capable of attracting the second repulsive magnet, the attraction medium body can be fixed on a fixed plate in the base or independently fixed on a plastic support, and the electromagnet 13 is of a structure with an iron core in the middle and a coil wound outside or a coil without the iron core.

Magnetic sensor 14 of magnetic suspension product in the market at present all installs the central point of base 1 and puts, and they are fixed on mainboard 15 through 2 little PCB board crosses, and for example the utility model patent application of china (application number 201910603771.2), it is not low that its structure complexity and cost are seen, and the cross board will weld on mainboard 15, must skilled technical worker to go on, but often the product has a lot of badness. For this reason, it is known that the magnetic sensor 14 must be placed at the center of the base to pull the suspension body 2 back to the center with the electromagnet 13 at the center 2 under balanced force.

The utility model discloses break conventional design, can place any position in 4 electro-magnet 13 center line within ranges with magnetic sensor 14. The first repulsive magnet 11 can be arranged in the middle of the magnetic field generating device, and the magnetic field generating device has the advantages that the attractive medium body 12 (which is made of iron and not made of strong magnetic magnet materials) can be introduced to be used smoothly, and the cost is greatly reduced.

If on the basis of the Chinese utility model patent (application number: 201921051782.6), the cross plate is continuously used to strengthen the magnetic force of the repulsion magnet 11 under the main plate, and the design of the attraction medium body 12 of the utility model is also adopted, not only the sharp rise of the product cost of the magnetic force is strengthened, but also the magnetic force is strengthened again and can not be realized. Because, firstly, the control circuit can not be turned on, the control circuit of the magnetic suspension product is turned on by detecting that the suspension body 2 is close to the base 1, and the magnetic force of the second repulsive magnet 21 on the upper surface of the base is enhanced. The polarity of the lower surface of the second repulsive magnet 21 in the suspension 2 is the same as that of the upper surface of the first repulsive magnet 11 in the base 1, and the magnetic forces cancel each other at the upper surface of the base and cannot trigger the control circuit. If the utility model discloses put first repulsion magnet 11 on the mainboard, its magnetic force at the base upper surface has strengthened equally, nevertheless because its distance from second repulsion magnet 21 is closer, so just can reduce the diameter of first repulsion magnet 11 greatly to reduce first repulsion magnet 11 greatly at the magnetic force distribution scope of base upper surface, so trigger circuit sensor just avoids first repulsion magnet 11 to its influence very easily. Second, the magnetic force of the magnets is inversely proportional to the cube of the distance, that is, the magnetic force between the magnets (including the magnets and the iron) decreases sharply with the increase of the distance. When the suspension 2 approaches the base 1, the second repulsive magnetic body 21 is in close proximity to the attracting dielectric body 12 (iron) and the electromagnet (iron core is an iron material), and the attraction force therebetween is very large. When the first repulsive magnet 11 is placed under the main board, the distance is long, and the repulsive force between the first repulsive magnet 11 and the second repulsive magnet 21 is difficult to overcome the attractive force between the second repulsive magnet 21 and the attractive force medium body 12 and the electromagnet 13, so that the suspension body 2 cannot float. (for example, the attraction medium body 12 is a magnet instead of iron, and although its upper surface is attracted to the second repulsive magnet 21, the resultant force at the center of the attraction medium body 12 is repulsive to the second repulsive magnet 21, as in utility model patent application No. 200610065336.1, which utilizes this characteristic).

To sum up, the utility model discloses a key has broken present conventional design, has changed into the mode that utilizes the fixed magnetic sensor of cross in the middle of base 1, changes to plug-in components formula magnetic sensor 14, vacates central space and gives first repulsion magnet 11. The advantages of such a design are: 1, the attraction medium body 1 is made of iron instead of conventional magnetic material, so that the cost is greatly reduced. 2, the plate manufacturing cost and the patch manufacturing cost of the cross plate are saved. 3, the magnetic sensor 14, which is a plug-in, is not only much easier to weld, but also hardly suffers from a welding problem. 4, because the first repulsive magnet 11 moves downwards from the main board to the main board, the distance from the suspension body 2 is closer, a magnet with large magnetic force is not needed, and the cost is further reduced.

The utility model discloses still effectively solved the magnetic suspension product to the difficult problem of putting of novice, the problem of placing the magnetic suspension product is exactly how to align the axis of second repulsion magnet 21 with the 11 axes of first repulsion magnet fast. In general terms, the problem of aligning the center of the suspension body 2 with the center of the base 1. It is difficult for the human eye to center the 2, with many more and few deviations. The electromagnet 13 can correct this deviation and pull the suspension 2 into central alignment. But an electromagnet is in fact an energized coil, which generates a magnetic force that can act on the magnet, with a large force when the electromagnet is close to the magnet and little force when it is far away. That is, the closer the electromagnet 13 needs to pull the suspension 2 to the center of the base 1, the better the 2 are. The distance between the two magnets 2 is determined by the first repulsive magnet 11 and the second repulsive magnet 21, and the distance between them also determines the height of the floating body 2. That is, the higher the suspension 2 floats, the smaller the pulling force of the electromagnet 13 is, and the harder it is to release. But too low a float loses sight.

The utility model discloses elevating system 111 has been introduced, promptly: the base 1 is internally provided with a lifting mechanism 111, the lifting mechanism 111 is respectively connected to the control circuit and the first repulsive magnet 11, the lifting mechanism 111 controls the first repulsive magnet 11 to vertically lift, preferably, the first repulsive magnet 11 is fixed at a certain position of the axis thereof, and the fixed position of the first repulsive magnet 11 is higher than, lower than or flush with the upper surface of the electromagnet 13.

Before the suspension body 2 is placed, the lifting mechanism 111 controls the first repulsive magnet 11 to be in a low position, and the suspension body 2 is relatively low in floating and relatively close to the electromagnet 13, so that a consumer can easily place the suspension body 2 on the base 1 in a floating manner. When the consumer places the suspension body 2 on the base 1, the control circuit sends a feedback signal to the lifting mechanism 111 after detecting that the suspension body 2 is placed. After the lifting mechanism 111 receives the feedback signal, the driving stepping motor drives the first repulsive magnet 11 to move upwards, so that the suspension body 2 floats to a reasonable height, and the problem that the magnetic suspension product is difficult to place is effectively solved.

By applying the principle, other specific actions can also be realized, for example, the suspension body 2 jumps up and down in the air along with music, a music signal can be converted into a voltage or current signal to be transmitted to the stepping motor, and the stepping motor drives the first repulsive magnet 11 to make the suspension body 2 jump up and down in the air.

It is known that a faster rotation speed indicates a higher centrifugal force of the levitation body 2, which means a higher probability of being off-centre, and that the electromagnet 13 is intended to pull the levitation body 2 towards the centre. The load on the electromagnet 13 increases as the rotation speed increases. I.e. the current passed by the electromagnet 13 is large for a long time. The larger the heat generated by the electromagnet 13 is, the higher the base temperature is, the worse the stability of the electronic components is, and the worse the stability of the whole magnetic suspension system is, so that the rotating speed is too high, which is the gram of the magnetic suspension product, and the rotating speed is very necessary to be controlled.

The utility model provides a dull rotatory and uncontrollable problem of rotational speed of suspension body, the characteristics of magnetic suspension product are exactly unsettled and float, autogiration. The speed of the magnetic suspension products on the market is random, and some magnetic suspension products are slow and uncontrollable. The utility model discloses a rotational speed is controllable just can be accomplished to the active electro-magnet. The concrete structure is as follows: one or more dynamic electromagnetic control devices are arranged in the base 1, preferably, the dynamic electromagnetic control device is a dynamic electromagnet 131, the dynamic electromagnet 131 is connected with a control circuit and generates a fourth magnetic force F4 for controlling the rotation of the second repulsive magnet 21, the dynamic electromagnet 131 is an iron core in the middle, a structure of winding coils outside or a coil without an iron core is arranged outside, the dynamic electromagnet 131 is usually arranged on the fixing plate 15, and the dynamic electromagnets can be sequentially arranged around the central axis of the base 1.

The utility model discloses, in view of the periodic variation that magnetic field and electric current all can be brought to suspension body 2 per turn round, just can detect the number of times that 1 minute changed, when the number of times surpassed reasonable scope, detection sensor just gave a signal of control circuit, and control circuit just defeated gives a corresponding electric current of active electromagnet 131, and active electromagnet just produces fourth magnetic force F4 and holds suspension body 2, and the rotational speed of suspension body 2 will drop very fast. When the rotating speed is lower than a reasonable value, the detection sensor gives a signal to the control circuit, and the control circuit stops supplying current to the dynamic electromagnet 131. The rotational speed of the suspension 2 is thus controlled within a reasonable range. Similarly, when the rotation speed of the suspension body 2 is very low, the rotation speed can be increased to a reasonable range. The number of the dynamic electromagnets 131 can be 1, or several dynamic electromagnets can be arranged around the circumference to cooperate with each other.

The rotating speed of the suspension body 2 can be controlled, so that the ornamental value of the magnetic suspension product is improved, and the possibility of widening the application range of the magnetic suspension product is provided. Such as an implanted monitoring camera. By adjusting the rotating speed, the condition of the home around the magnetic suspension product can be seen clearly. Through the coordination of a plurality of dynamic electromagnets, the camera faces to a specific position (such as a door). If the intelligent sound box is a suspended intelligent sound box, the magnetic suspension sound box can generate actions similar to nodding by giving an instantaneous current to the dynamic electromagnet. Therefore, the magnetic suspension product can enter the Internet of things and the smart home.

The present invention is not limited to the above best mode, and any person should learn the structural changes made under the teaching of the present invention, all with the present invention has the same or similar technical solution, all fall into the protection scope of the present invention.

Claims

1. A dynamic magnetic suspension device comprises a base and a suspension body which have magnetic repulsion, the base and the suspension body are oppositely arranged from bottom to top, a first magnetic force resisting the self weight of the suspension body is mutually generated between the base and the suspension body, and the dynamic magnetic suspension device is characterized in that,

a reference position resetting device is arranged in the base;

and a control circuit connected with the reference position resetting device is also arranged in the base, and the control circuit enables the reference position resetting device to generate a third magnetic force for controlling the suspension body to stably reset.

2. A dynamic magnetic levitation apparatus as recited in claim 1, wherein a first repulsive magnet is disposed in the base, a second repulsive magnet is disposed in the suspension, the first repulsive magnet and the second repulsive magnet have magnetic repulsion with each other, and the reference position resetting means is a plurality of electromagnets disposed around the inner axis of the base, respectively.

3. The dynamic magnetic levitation device of claim 1, wherein X-axis and Y-axis coordinate lines are provided along an inner axial plane of the base, the control circuit detects distances of the levitation body along X-axis and Y-axis directions with respect to an axial reference position, respectively, and causes the reference position resetting device to generate a third magnetic force that pulls the levitation body toward the axial reference position, the number of the reference position resetting devices is 4, and 2 reference position resetting devices are arranged along X-axis and Y-axis directions of the base, respectively, and are connected in series with two reference position resetting devices on the X-axis or the Y-axis.

4. The dynamic magnetic levitation device of claim 3, wherein magnetic sensors for detecting the distance between the levitation body and a reference position of the axle center are respectively disposed in the base corresponding to the directions of the X-axis and the Y-axis, the control circuit is respectively connected to each of the magnetic sensors, the magnetic sensor on the X-axis is disposed corresponding to 2 reference position resetting devices on the X-axis, the magnetic sensor on the Y-axis is disposed corresponding to 2 reference position resetting devices on the Y-axis, and the magnetic sensors are detachably disposed in the base.

5. The dynamic magnetic levitation device of claim 4, wherein the control circuit comprises a sensor signal detection circuit, an amplification circuit and a power amplification circuit which are connected in sequence, the sensor signal detection circuit, the amplification circuit and the power amplification circuit are respectively connected in parallel with the power circuit, the magnetic sensor is a linear sensor, the sensor signal detection circuit outputs a corresponding voltage value to the amplification circuit according to the distance value detected by the magnetic sensor, the amplification circuit amplifies the voltage signal and outputs the amplified voltage signal to the power amplification circuit, and the power amplification circuit drives the reference position resetting device to generate a corresponding third magnetic force.

6. The dynamic magnetic levitation apparatus of claim 1, wherein one or more dynamic electromagnetic control devices are built into the base and generate a fourth magnetic force that controls the motion of the levitation body.

7. The dynamic magnetic levitation device according to claim 6, wherein the dynamic electromagnetic control device is connected to the control circuit, and a plurality of the dynamic electromagnetic control devices are sequentially arranged around the central axis of the base.

8. The dynamic magnetic levitation device according to any one of claims 1 to 7, wherein a fixed plate is disposed in the base, and each component in the base is respectively fixed or detachably disposed on the fixed plate.

9. The dynamic magnetic levitation device as recited in claim 2, wherein a lifting mechanism is disposed in the base, the lifting mechanism is connected to the control circuit and the first repulsive magnet, and the lifting mechanism controls the first repulsive magnet to lift vertically.

10. The dynamic magnetic levitation device of claim 9, wherein the first repulsive magnet is fixed at a position on its axis, and the fixed position of the first repulsive magnet is higher, lower or flush with the upper surface of the electromagnet.

11. The dynamic magnetic suspension device according to claim 1, wherein the attraction medium body is a non-magnetic electrolytic iron, a permanent magnet or a material capable of attracting the suspension body, the attraction medium body is in a ring shape or a plurality of cylinders and square columns arranged in a similar ring shape, or the attraction medium body is a matched ring-shaped iron ring and a round iron column, the upper surface of the attraction medium body is a plane, an inclined plane, an arc surface or a wave surface, and the attraction medium body is fixed in the base or is independently fixed on a plastic support.

12. The dynamic magnetic levitation device of claim 2, wherein the first repulsive magnet is a permanent magnet or an energized electromagnet, the second repulsive magnet is a permanent magnet, and the electromagnet is a structure with an iron core in the middle, a coil wound outside or a coil without an iron core.