CN111953234A - A DC-powered magnetic suspension device - Google Patents

Abstract

The present invention provides a DC-powered magnetic suspension device, comprising a DC power supply device, a lower suspension body, an electromagnet, a sensor, a control circuit and a bracket, wherein the DC power supply device, the sensor, the electromagnet and the control circuit are mounted on the bracket, and the lower suspension body is built with a permanent magnet, characterized in that when the sensor detects that the permanent magnet is located below, the DC power supply device energizes the electromagnet through the control circuit, and the lower suspension body is magnetically suspended directly below the electromagnet through the balance of the opposite attraction force and the weight of the lower suspension body, and the lower suspension body is controlled to be in a balanced position through the control circuit. This device comprehensively utilizes the technical principles of magnetic field opposite attraction, object detection, DC boost, etc., to realize the functions and characteristics of intelligent detection of suspended objects, precise hovering in the air, and convenient deployment and movement.

Description

A DC-powered magnetic suspension device

technical field

The invention relates to the field of electromagnetism, in particular to a magnetic attraction type suspension device powered by direct current.

Background technique

At present, the existing magnetic suspension devices on the market are basically mainly magnetic repulsion type suspension devices, and there are very few magnetic suspension devices, such as CN1729614B, CN100544183C, CN204993114U and so on.

The base disclosed in CN1729614B includes one or two sets of symmetrically arranged magnets to form a horizontal uniaxial control magnetic field, and a peripheral ring magnet with co-direction magnetism can be selectively added to enhance the anti-rollover capability. The base structure is relatively complex and the suspension is unstable.

The base disclosed in CN100544183C includes a single ring magnet to form a horizontal biaxial control magnetic field and at the same time form a sufficient anti-rollover capability. Although this base has a simple structure and stable suspension, the suspension height is not ideal.

The base disclosed by CN204993114U includes a ring magnet and a cylindrical magnet arranged in the center of the ring magnet to be oppositely magnetic. Although this type of base takes into account the suspension height, it creates a spatial obstacle for the arrangement of horizontal control mechanisms such as electromagnets.

At present, the products on the market are generally large-scale. The combination of electromagnets and permanent magnets realizes the suspension of the objects above, and the suspension of magnetic objects below is less, and generally requires the help of the AC power supply network, which requires high placement. , inconvenient to move. The present invention provides a magnetic attraction type suspension device powered by direct current.

SUMMARY OF THE INVENTION

The present invention provides a DC power supply magnetic suction type suspension device, including a DC power supply device, a lower suspension body, an electromagnet, a sensor, a control circuit and a bracket, the sensor and the electromagnet are mounted on the bracket, and the lower suspension body has a built-in permanent The magnet is characterized in that, when the sensor detects that the permanent magnet is located below, the DC power supply device energizes the electromagnet through the control circuit, and the lower suspension body is magnetically suspended in the electromagnetic suspension through the balance between the attraction force of the opposite sex and the gravity of the lower suspension body. The iron is directly below, and the lower suspension is controlled by the control circuit to be in the equilibrium position.

In the present invention, the electromagnetic field generated by the electrified electromagnet is opposite to the magnetic field of the built-in permanent magnet of the suspended object below, and opposites attract each other to generate a magnetic attraction force; under the condition of appropriate spacing and position, the magnetic attraction force received by the suspended object below is equal to its own gravity, Hovering is generated; the suspended object below is precisely designed to make the center of gravity of the suspended object perpendicular to the direction of the magnetic field to ensure the effective suspension of the suspended object; when the suspended object detection sensor detects an object below, the electromagnet power-on command is issued through the circuit board ; After the electromagnet coil is energized, a magnetic field is generated, the iron core inside the coil is magnetized, and an electromagnetic field with a downward direction of the magnetic field is generated; Attractive force; in the case of suitable spacing and position, the magnetic attraction force of the suspended object below is equal to its own gravity, resulting in hovering; the suspended object below has undergone precise structural design, so that the center of gravity of the suspended object is perpendicular to the direction of the magnetic field, ensuring the suspension of the suspended object. Effectively floating.

Further, the DC power supply device and the control circuit are built into the support, or externally placed outside the support.

Further, the electromagnets are one or more and contain iron cores and coils.

Further, the bracket is a fixed bracket or a movable bracket.

Further, the DC power supply device is a mobile power supply, preferably a common 5V mobile power supply.

Further, the DC power supply device includes a booster circuit, which can convert the 5V power supply into the 12V power supply.

Further, the control circuit includes a magnetic control switch circuit, a DC power supply circuit and a system control circuit.

The system circuit is divided into a part which is a booster circuit, a part b which is a central microprocessor circuit, a part c which is an operational amplifier circuit, and a part d which is the Hall detection iC (magnetron detection iC).

Circuit principle: When the product is connected to the 5V power supply, the booster circuit (a) will increase the voltage to 12V, and provide power to the central microprocessor circuit, operational amplifier circuit and magnetron detection circuit. When the magnetron detection iC (d) detects When it reaches the lower suspension with the built-in permanent magnet below, the magnetic detection iC will convert the magnetic signal into an electrical signal to the central microprocessor circuit. After the central microprocessor circuit (b) receives the detected electric signal, it outputs the signal to the operational amplifier (c). ) to deal with the corresponding signal size and control the size of the corresponding current of the coil, so that the magnetic force generated by the coil is balanced with the weight of the suspended object to achieve the purpose of suspension.

Beneficial effects of the invention: the device comprehensively utilizes the technical principles of magnetic field opposites attract, object detection, DC boost, etc., and realizes functions and features such as intelligent detection of suspended objects, accurate hovering in the air, and convenient deployment and movement;

Description of drawings

Fig. 1 is a schematic diagram of the principle structure of a DC-powered magnetic suspension device;

2 is a schematic structural diagram of a DC-powered magnetic suspension device;

Fig. 3 is a magnetic control switch circuit of a DC-powered magnetic suction type suspension device;

Fig. 4 is a kind of DC-powered magnetic attraction type suspension device magnetic control switch B board circuit;

Fig. 5 is a DC power supply circuit of a DC power supply magnetic suction type suspension device;

Fig. 6 is a magnetic attraction type suspension device system circuit of DC power supply;

FIG. 7 is a schematic diagram of a system circuit of a DC-powered magnetic suspension device.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

Example 1

As shown in Figures 1 and 2, it includes a DC power supply device, a lower suspension 2, an electromagnet 1, a sensor 4, a control circuit 3 and a bracket 5. The DC power supply device, the sensor 4, the electromagnet 1 and the control circuit 3 are installed in the On the bracket 5, the lower suspension body 2 has a built-in permanent magnet 21. It is characterized in that, when the sensor 4 detects that the permanent magnet 21 is located below, the DC power supply device energizes the electromagnet 1 through the control circuit 3, and passes through the opposite sex. The balance between the attractive force and the gravity of the lower suspension body 2 magnetically suspends the lower suspension body 2 directly below the electromagnet 1 , and the control circuit 3 controls the lower suspension body 2 to be in a balanced position. The electromagnet includes an iron core 11 and a coil 12 .

For example, if the device is applied to a miniature magnetic levitation doll, after the sensor detects the lower doll, the controller energizes the upper electromagnet to generate a downward magnetic field, and the built-in magnetic field of the doll is generated by an upward magnet. Magnetic attraction, so that the doll can be suspended in the air. The device supports 5V DC power supply, so it can be powered by a common mobile power supply on the market, which is convenient for the arrangement and movement of the device. In addition, the diameter of the system is 32mm, the diameter of the magnet is 12-14mm, the height is 8-10mm, and the lifting weight of the system is 50-60g.

Example 2

As shown in Figures 3-6, further, the control circuit includes a magnetic control switch circuit, a DC power supply circuit and a system circuit.

Among them, as shown in Figure 7, the system circuit is divided into (a) part is the booster circuit, (b) part is the central microprocessor circuit, (c) part is the operational amplifier circuit, (d) part is the Hall detection IC ( Magnetic detection iC).

Circuit principle: When the product is connected to the 5V power supply, the power boost circuit (a) will increase the voltage to 12V, and provide power to the central microprocessor circuit, operational amplifier circuit and magnetron detection circuit. When the magnetron detects iC (d) When detecting a magnetic suspended object below, the magnetic detection iC will convert the magnetic signal into an electrical signal to the central microprocessor circuit. After the central microprocessor circuit (b) receives the detected electric signal, it outputs the signal to the operational amplifier (c). ) to deal with the corresponding signal size and control the size of the corresponding current of the coil, so that the magnetic force generated by the coil is balanced with the weight of the suspended object to achieve the purpose of suspension.

The above descriptions are only preferred embodiments of the present invention, and are further detailed descriptions of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a magnetic suction type suspension device of DC power supply, comprising a DC power supply device, a lower suspension body, an electromagnet, a sensor, a control circuit and a bracket, the sensor and the electromagnet are installed on the bracket, and the lower suspension body has a built-in The permanent magnet is characterized in that when the sensor detects that the permanent magnet is located below, the DC power supply device energizes the electromagnet through the control circuit, and the lower suspension body is magnetically suspended in the magnetic suspension through the balance of the opposite-phase attraction force and the lower suspension gravity force. The electromagnet is directly below, and the lower suspension is controlled by the control circuit to be in the equilibrium position. 2 . The magnetic suspension device according to claim 1 , wherein the DC power supply device and the control circuit are built into the bracket, or externally placed outside the bracket. 3 . 3 . The magnetic suspension device according to claim 1 , wherein the electromagnet is one or more, and contains an iron core and a coil. 4 . 4 . The magnetic suspension device according to claim 2 , wherein the support is a fixed support or a movable support. 5 . 5 . The magnetic suspension device according to claim 1 , wherein the DC power supply device is a 5V mobile power supply. 6 . 6 . The magnetic suspension device according to claim 5 , wherein the DC power supply device contains a booster circuit, which converts the 5V power supply into a 12V power supply. 7 . 7. Further, the magnetic suspension device according to claim 1 or 6, wherein the control circuit comprises a magnetic control switch circuit, a DC power supply circuit and a system control circuit. 8. The magnetic suspension device according to claim 7, wherein the system circuit is divided into a part that is a booster circuit, part b is a central microprocessor circuit, part c is an operational amplifier circuit, and part d is a hoist circuit. Er detects the iC circuit. 9 . The magnetic suspension device according to claim 8 , wherein the booster circuit boosts the voltage to 12V and supplies power to the central microprocessor circuit, the operational amplifier circuit and the magnetron detection circuit. 10 . 10. The magnetic suspension device according to claim 9, wherein when the magnetron detection iC detects the lower suspension with a built-in permanent magnet below, the magnetic detection iC converts a magnetic signal into an electrical signal to the central microcomputer. Processing circuit, after the central microprocessor circuit receives the detected electrical signal, it outputs the signal to the operational amplifier to process the corresponding signal size and controls the size of the corresponding current of the coil.

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