Device for isolating magnetic field interference of unmanned aerial vehicle

Abstract

The utility model provides a device for isolating magnetic field interference for an unmanned aerial vehicle, which comprises a shielding body, the shielding body comprises a first shielding upper cover plate and a first shielding shell, the first shielding upper cover plate covers the first shielding shell, the device is characterized in that the shielding body is made of iron and permalloy, and the first shielding shell is made of iron and permalloy. The shielding device comprises a first shielding bottom plate, a first vertical shielding baffle, a second vertical shielding baffle and a third vertical shielding baffle.

Description

Technical Field

[0001] The present application relates to the field of mechanics, and more specifically to a device for isolating magnetic field interference for drones. Background Art

[0002] Currently, when a drone is running, the motor will generate a large magnetic field when running at high power. The drone needs to use a magnetic compass sensor to indicate the heading, which will be disturbed by the changing magnetic field, causing the heading to shift. Summary of the invention

[0003] The present application provides a device for isolating magnetic field interference of a drone, comprising: a shielding body, the shielding body comprising a first shielding upper cover plate and a first shielding shell, the first shielding upper cover plate covering the first shielding shell, characterized in that the material of the shielding body is iron and permalloy, the first shielding shell comprising a first shielding bottom plate, a first vertical shielding baffle plate, a second vertical shielding baffle plate and a third vertical shielding baffle plate, wherein the first shielding bottom plate is provided with a plurality of holes so that the wires connecting the drone components pass through the holes; the first vertical shielding baffle plate is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and wherein the first vertical shielding baffle plate is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and wherein the first vertical shielding baffle plate is provided with a plurality of holes so that the wires connecting the drone components pass through the holes; the first vertical shielding baffle plate is provided ... with a plurality of holes so that the wires connecting the drone components pass through the holes; the first vertical shielding baffle plate is provided perpendicular to the first shielding bottom plate and the first The baffle is provided with a plurality of circular holes for reducing the magnetic field interference of the components arranged in the shielding body to the external components; the second vertical shielding baffle is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and is arranged on the opposite side of the first vertical shielding baffle, and a plurality of circular holes are arranged at corresponding positions; the third vertical shielding baffle is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, the third vertical shielding baffle has no holes or is provided with holes so that the wires connecting the drone components pass through the holes, and the first vertical shielding baffle, the second vertical shielding baffle and the third vertical shielding baffle are connected to each other in a direction perpendicular to the first shielding bottom plate.

[0004] The device can significantly reduce the magnetic field interference of the magnetic compass on the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the invention of the present application, any of the currently described embodiments or preferred methods.

[0006] Figure 1 This is a diagram of the shielding cover structure.

[0007] Figure 2 This is a schematic diagram of the magnetic field shielding principle.

[0008] Figure 3 This is the installation structure diagram of the shielding cover and the magnetic compass.

[0009] Figure 4 This is a schematic diagram of the shield cover being applied to a drone. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0011] Figure 1 This is a diagram of the shielding cover structure. Figure 2 This is the principle diagram of magnetic field shielding. Figure 1 and Figure 2 The device of the present application is described. Figure 1 A structural diagram of a shielding body according to an embodiment of the present application is shown. The shielding body includes a shielding cover upper cover and a shielding cover lower cover. The shielding cover lower cover may also be a shielding cover bottom plate. On the shielding cover bottom plate, a plurality of vertical shielding baffles are vertically arranged, and the vertical shielding baffles are provided with a plurality of circular holes. Preferably, 4 circular holes may be provided. Two circular holes are provided near the first shielding upper cover plate, and two circular holes are provided near the first shielding bottom plate. In one embodiment, placing a device that generates a large magnetic field into the shielding cover and appropriately leaving small holes for routing can greatly reduce the intensity of the magnetic field radiated to the outside world.

[0012] Figure 2 This is the principle diagram of magnetic field shielding. Magnetic field shielding refers to the use of materials with high magnetic permeability, which can bypass the interference magnetic flux, thereby preventing the interference from interfering with the protected circuit. In addition, the alternating interference magnetic flux will form eddy currents in the conductive shielding layer, and the eddy current effect will weaken the strength of the external magnetic field. The shielding layer made of iron and permalloy has both functions, which can make the interference magnetic field lose its influence on the circuit. The weak signal circuit near the power transformer should avoid magnetic field interference, and can be shielded with a cover made of iron and permalloy to reduce the strength of the magnetic field radiated outside the cover.

[0013] In one embodiment, a device for isolating magnetic field interference of a drone is provided, comprising: a shielding body, the shielding body comprising a first shielding upper cover plate and a first shielding shell, the first shielding upper cover plate covering the first shielding shell, characterized in that the material of the shielding body is iron and permalloy, the first shielding shell comprising a first shielding bottom plate, a first vertical shielding baffle plate, a second vertical shielding baffle plate and a third vertical shielding baffle plate, wherein the first shielding bottom plate is provided with a plurality of holes so that the wires connecting the drone components pass through the holes; the first vertical shielding baffle plate is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and wherein the first vertical The shielding baffle is provided with a plurality of circular holes for reducing the magnetic field interference of the components arranged in the shielding body to the external components; the second vertical shielding baffle is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and is arranged on the opposite side of the first vertical shielding baffle, and a plurality of circular holes are arranged at corresponding positions; the third vertical shielding baffle is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, the third vertical shielding baffle has no holes or is provided with holes so that the wires connecting the drone components pass through the holes, and the first vertical shielding baffle, the second vertical shielding baffle and the third vertical shielding baffle are connected to each other in a direction perpendicular to the first shielding bottom plate.

[0014] In another embodiment, the number of the circular holes is 4, two circular holes are arranged close to the first shielding upper cover plate, and two circular holes are arranged close to the first shielding bottom plate.

[0015] In another embodiment, a fourth vertical shielding baffle is provided, which is arranged perpendicularly to the first shielding base plate and the first shielding upper cover plate, and wherein the fourth vertical shielding baffle is provided with a plurality of circular holes; a fifth vertical shielding baffle is provided, which is arranged perpendicularly to the first shielding base plate and the first shielding upper cover plate, and wherein the fifth vertical shielding baffle is provided with a plurality of circular holes, and is provided on the opposite side of the fourth vertical shielding baffle.

[0016] Figure 3 This is the installation structure diagram of the shielding cover and the magnetic compass. Figure 4 This is a schematic diagram of the shielding cover applied to the drone. In actual testing, it was found that the power supply board (distributor board) and the ESC that provides energy for the drone will generate a large magnetic field when the power is high, which will seriously interfere with the magnetic compass. Therefore, the ESC and the distributor board are placed in the shielding cover box. The magnetic compass is also placed slightly away from the shielding cover to further reduce magnetic field interference.

[0017] In another embodiment, the power supply board and the electronic speed regulator of the drone may be disposed inside the shielding body, and the compass of the drone may be disposed outside the shielding body to be spaced apart from the power supply board and the electronic speed regulator.

[0018] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0019] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A device for isolating magnetic field interference for a drone, comprising: The shielding body comprises a first shielding upper cover plate and a first shielding shell, wherein the first shielding upper cover plate covers the first shielding shell, and is characterized in that the material of the shielding body is iron and Permalloy, and the first shielding shell comprises a first shielding bottom plate, a first vertical shielding baffle plate, a second vertical shielding baffle plate and a third vertical shielding baffle plate, wherein the first shielding bottom plate is provided with a plurality of holes so that the wires connecting the drone components pass through the holes; the first vertical shielding baffle plate is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and wherein the first vertical shielding baffle plate is provided with a plurality of circular holes for reducing The components arranged in the shielding body interfere with the magnetic field of external components; a second vertical shielding baffle, which is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, and is arranged on the opposite side of the first vertical shielding baffle, and a plurality of circular holes are arranged at corresponding positions; a third vertical shielding baffle, which is arranged perpendicular to the first shielding bottom plate and the first shielding upper cover plate, the third vertical shielding baffle has no holes or is provided with holes so that the wires connecting the drone components pass through the holes, and the first vertical shielding baffle, the second vertical shielding baffle and the third vertical shielding baffle are connected to each other in a direction perpendicular to the first shielding bottom plate.

2. The device for isolating magnetic field interference for a drone according to claim 1, wherein: The number of circular holes is 4, two circular holes are arranged close to the first shielding upper cover plate, and two circular holes are arranged close to the first shielding bottom plate.

3. The device for isolating magnetic field interference for a drone according to claim 2, characterized in that: A fourth vertical shielding baffle is set, which is perpendicular to the first shielding base plate and the first shielding upper cover plate, and wherein the fourth vertical shielding baffle is provided with a plurality of circular holes; a fifth vertical shielding baffle is set, which is perpendicular to the first shielding base plate and the first shielding upper cover plate, and wherein the fifth vertical shielding baffle is provided with a plurality of circular holes, and is set on the opposite side of the fourth vertical shielding baffle.

4. A device for isolating magnetic field interference for drones, characterized in that: The power supply board and the electronic speed regulator of the drone are arranged inside the shielding body as claimed in claim 1, and the compass of the drone is arranged outside the shielding body to be physically separated from the power supply board and the electronic speed regulator.

Images