Magnetic suspension laser radar

Abstract

The utility model belongs to the technical field of distance detection, and discloses a magnetic suspension laser radar, which comprises a base, a bottom plate, a main circuit board, a magnetic suspension assembly, a driving motor and a radar assembly, and is characterized in that the base comprises a first accommodating groove and a second accommodating groove, the second accommodating groove is provided with a first space and a second space, and the main circuit board comprises a mainboard which is arranged in the first accommodating groove; the magnetic suspension assembly comprises two opposite annular magnets with the same magnetism and a power supply coil located in center holes of the annular magnets, the power supply coil and the annular magnet are arranged in the first space, the power supply coil and the driving motor are both electrically connected with the main board, the driving motor comprises a stator and a rotor, the stator is arranged in the second space, and the rotor is arranged in the second space. The radar assembly comprises a mounting base, a receiving coil and a radar unit, the other annular magnet, the rotor and the radar unit are all connected with the mounting base, the receiving coil is electrically connected with the radar unit, and the bottom plate blocks the first containing groove. The magnetic suspension laser radar is free of noise in the working process, stable in rotation and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to distance detection technical field especially relates to a magnetic suspension laser radar. BACKGROUND

[0002] Laser radar is a kind of component that emits and receives laser beam, analyzes the turnaround time of laser beam after meeting detection target, calculates the relative distance of detection target and the place of laser radar, and is mostly applied in the fields such as vehicle, low-altitude flying helicopter and fixed detection equipment.

[0003] In order to expand the detection range of laser radar and more accurately determine the location of detection target, the laser light source in the existing laser radar can mostly rotate. The conventional laser radar is mostly supported by bearing and realizes the rotation of laser light source by the mode of gear and belt, but the bearing, gear and belt will produce noise and the stability of bearing rotation is poor in the working process, that is, the existing laser radar will produce noise and the rotation stability is poor in the working process. At the same time, the bearing, gear and belt will produce friction damage after long time work, which affects the service life of laser radar.

[0004] Therefore, a magnetic suspension laser radar is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of magnetic suspension laser radar, can solve the technical problems that the existing laser radar will produce noise, rotation stability is poor and service life is relatively short in the working process.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of magnetic suspension laser radar, comprising:

[0008] Base and bottom plate, including first containing groove and second containing groove, the second containing groove is provided with annular baffle, the annular baffle is used to separate the second containing groove into first space and second space, the first space is communicated with the first containing groove;The bottom plate is used to block the first containing groove;

[0009] Main circuit board, including main plate and flat cable, the main plate is placed in the first containing groove, and the flat cable is partially exposed to the base;

[0010] Magnetic suspension assembly, including two opposite and magnetically same annular magnets and a power supply coil, the power supply coil is located in the center hole of two annular magnets, the power supply coil and one of the annular magnets are placed in the first space, and the main plate is electrically connected with the power supply coil;

[0011] A driving motor is electrically connected with the main board, and the driving motor comprises a stator and a rotor, and the stator is arranged in the second space.

[0012] A radar assembly comprises a mounting base, a receiving coil and a radar unit, the mounting base is connected with another annular magnet, the rotor is connected with the mounting base, the receiving coil is electrically connected with the radar unit, and the radar unit is connected with the mounting base.

[0013] As the preferred technical scheme of the magnetic suspension laser radar, a center column is arranged at the center of the first space, the center column is provided with a through hole, the mounting base is provided with a positioning column opposite to the through hole, the positioning column is provided with a convex head, and when the positioning column passes through the through hole, the convex head is clamped with the bottom surface of the center column.

[0014] As the preferred technical scheme of the magnetic suspension laser radar, the radar assembly further comprises a clamping spring, the clamping spring is sleeved on the outer periphery of the positioning column and located between the convex head and the bottom surface of the center column.

[0015] As the preferred technical scheme of the magnetic suspension laser radar, the outer periphery of the center column is provided with a first annular groove, and the power supply coil is arranged in the first annular groove.

[0016] As the preferred technical scheme of the magnetic suspension laser radar, one side of the mounting base towards the base is provided with a mounting column, the mounting column is arranged in the center hole of the two annular magnets, the center of the mounting column is provided with an avoiding groove, the avoiding groove covers the center column, the outer periphery of the avoiding groove is provided with a second annular groove, and the receiving coil is arranged in the second annular groove.

[0017] As the preferred technical scheme of the magnetic suspension laser radar, the main circuit board is provided with a receiving module, the radar unit comprises a transmitting module, and the transmitting module is in communication connection with the receiving module.

[0018] As the preferred technical scheme of the magnetic suspension laser radar, the magnetic suspension laser radar further comprises an optical cover, and the optical cover covers the base.

[0019] As the preferred technical scheme of the magnetic suspension laser radar, a protrusion is arranged around one end of the base towards the optical cover, and the optical cover is correspondingly provided with a groove.

[0020] As the preferred technical scheme of the magnetic suspension laser radar, a stud is arranged in the second accommodating groove, the optical cover is provided with an assembly hole corresponding to the stud, and the magnetic suspension laser radar further comprises a locking piece, and the locking piece is in threaded connection with the stud.

[0021] As a preferred technical scheme of the magnetic suspension laser radar, the side wall of the first accommodating groove is provided with a wire passing hole, and the wire is exposed outside the base through the wire passing hole.

[0022] The magnetic suspension laser radar has the advantages that:

[0023] The magnetic suspension laser radar is powered by an external power supply, the main board supplies power to the power supply coil, the upper ring-shaped magnet in the two ring-shaped magnets is subjected to zero force, and a suspension state is formed, the mounting seat is connected to the ring-shaped magnet in the suspension state, the radar unit is suspended, the mounting seat and the base are separated in the height direction, the main board supplies power to the driving motor, the rotor of the driving motor is connected to the mounting seat, and the radar unit can be driven to rotate after the driving motor is powered on. The magnetic suspension assembly and the driving motor are arranged, the radar assembly does not rub against the base when rotating, and the problem that the existing rotatable laser radar generates noise during operation is effectively solved. Moreover, compared with the existing technology of driving the radar assembly to rotate through a bearing, a gear and a belt, the magnetic suspension laser radar does not generate friction damage during operation, so that the service life of the magnetic suspension laser radar is guaranteed. After the power supply coil is powered on, the suspended ring-shaped magnet can be kept in a stable state, and after the driving motor operates, the stability of the radar unit during rotation can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a sectional view of the magnetic suspension laser radar provided by the utility model;

[0025] Fig. 2 is a structural schematic view of the base of the magnetic suspension laser radar provided by the utility model;

[0026] Fig. 3 is a structural schematic view of the mounting seat of the magnetic suspension laser radar provided by the utility model.

[0027] In the drawings:

[0028] 1, base; 11, first accommodating groove; 12, second accommodating groove; 120, ring-shaped baffle; 121, first space; 1211, center column; 122, second space; 13, protrusion;

[0029] 2, main circuit board; 21, main board; 22, wire;

[0030] 3, magnetic suspension assembly; 31, ring-shaped magnet; 32, power supply coil;

[0031] 4, driving motor; 5, radar assembly; 51, mounting seat; 511, positioning column; 5111, protruding head; 512, mounting column; 52, receiving coil; 53, radar unit; 54, clamping spring;

[0032] 6, bottom plate; 7, optical housing; 71, groove. DETAILED DESCRIPTION

[0033] The utility model will be described in further detail below in connection with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, but not limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0037] As Figs. 1 to 3As shown, the embodiment provides a magnetic suspension laser radar, which comprises a base 1, a main circuit board 2, a magnetic suspension assembly 3, a driving motor 4, a radar assembly 5 and a bottom plate 6. The base 1 comprises a first accommodating groove 11 and a second accommodating groove 12, and the second accommodating groove 12 is provided with an annular baffle 120, which divides the second accommodating groove 12 into a first space 121 and a second space 122. The main circuit board 2 comprises a main board 21 and a wire 22, the main board 21 is arranged in the first accommodating groove 11, and part of the wire 22 is exposed to the base 1, so that the main board 21 can be powered by an external power supply. Specifically, a wire passing hole is arranged on the side wall of the first accommodating groove 11, and the wire 22 is exposed to the base 1 through the wire passing hole. The bottom plate 6 is used to block the first accommodating groove 11 to prevent the main board 21 from leaking electricity. The magnetic suspension assembly 3 comprises two annular magnets 31 which are opposite and have the same magnetism, and a power supply coil 32, the power supply coil 32 is located in the center hole of the two annular magnets 31, and the power supply coil 32 and one of the annular magnets 31 are arranged in the first space 121, i.e. in the inner ring of the annular baffle 120, wherein the first space 121 is communicated with the first accommodating groove 11, the main board 21 is electrically connected with the power supply coil 32, and the main board 21 is provided with a lead-out wire which is electrically connected with the power supply coil 32 after passing through the place where the first space 121 is communicated with the first accommodating groove 11. Since the two annular magnets 31 are opposite and have the same magnetism, the two annular magnets 31 repel each other in the opposite case, and at the same time, the main board 21 supplies power to the power supply coil 32, the main board 21 supplies positive and negative alternating voltage to the power supply coil 32, so that the upper annular magnet 31 in the two annular magnets 31 is subjected to zero resultant force and suspends above the other annular magnet 31. The main board 21 is electrically connected with the driving motor 4, so that the driving motor 4 operates. The driving motor 4 comprises a stator and a rotor, the stator is arranged in the second space 122, and specifically, the stator is sleeved on the outer periphery of the annular baffle 120, so as to improve the rationality of the layout of the driving motor 4 on the base 1. In the embodiment, the annular magnet 31 in the first space 121 is fixedly connected with the base 1. The driving motor 4 can be an asynchronous motor.

[0038] The radar assembly 5 comprises a mounting seat 51, a receiving coil 52 and a radar unit 53. The mounting seat 51 is connected with the other annular magnet 31, that is, the mounting seat 51 is connected with the suspended annular magnet 31, and the two are fixedly connected. In this way, the mounting seat 51 is suspended, that is, the mounting seat 51 and the base 1 are separated in the height direction. The rotor is connected with the mounting seat 51. In this way, when the main board 21 supplies power to the driving motor 4, the rotor drives the mounting seat 51 to rotate. The radar unit 53 is connected with the mounting seat 51. When the rotor rotates, the radar unit 53 rotates 360 degrees. The receiving coil 52 is electrically connected with the radar unit 53. When the main board 21 supplies power to the power supply coil 32, the power supply coil 32 generates a changing magnetic field, which generates an electric current in the receiving coil 52, thereby realizing power supply to the radar unit 53. The changing magnetic field generated by the power supply coil 32 when supplying power belongs to the conventional technical means in the field of wireless charging, and does not belong to the key protection content of the embodiment.

[0039] The magnetic suspension laser radar provided in the embodiment is powered by an external power supply. The main board 21 supplies power to the power supply coil 32, so that the annular magnet 31 located above the two annular magnets 31 is in a state of zero force, forming a suspended state. The mounting seat 51 is connected with the annular magnet 31 in the suspended state, so that the radar unit 53 is suspended, that is, the mounting seat 51 and the base 1 are separated in the height direction. The main board 21 supplies power to the driving motor 4, and the rotor of the driving motor 4 is connected with the mounting seat 51. After the driving motor 4 is powered on, the radar assembly 5 can rotate. By arranging the magnetic suspension assembly 3 and the driving motor 4, the radar assembly 5 can rotate without friction contact with the base 1, effectively solving the problem of noise generated by the existing rotatable laser radar during operation. Moreover, compared with the existing technology of driving the radar assembly 5 to rotate by means of bearings, gears and belts, the magnetic suspension laser radar does not generate friction damage during operation, so that the service life of the magnetic suspension laser radar is guaranteed. After the power supply coil 32 is powered on, the suspended annular magnet 31 can be kept in a stable state. After the driving motor 4 is operated, the stability of the radar unit 53 during rotation can be improved.

[0040] In this embodiment, a center column 1211 is arranged at the center of the first space 121, the center column 1211 is provided with a through hole, a positioning column 511 is arranged on the mounting seat 51 and is opposite to the through hole, the positioning column 511 is provided with a convex head 5111, when the positioning column 511 passes through the through hole, the convex head 5111 is clamped with the bottom surface of the center column 1211. In this way, the deflection of the annular magnet 31 and the mounting seat 51 in the suspension state can be prevented when the driving motor 4 drives the radar assembly 5 to rotate, and the stability of the radar unit 53 during rotation is further improved. Further, the radar assembly 5 further comprises a clamping spring 54, the clamping spring 54 is clamped on the outer periphery of the positioning column 511 and between the convex head 5111 and the bottom surface of the center column 1211, the arrangement of the clamping spring 54 can prevent the mounting seat 51 from being separated from the base 1 when the magnetic suspension laser radar is taken, and further improve the rationality of the design of the magnetic suspension laser radar. Further, a first annular groove is arranged on the outer periphery of the center column 1211, the power supply coil 32 is arranged in the first annular groove, so that the layout of the power supply coil 32 and the base 1 is more compact, the occupied space is smaller, and the miniaturization degree of the magnetic suspension laser radar is improved.

[0041] Further, the mounting seat 51 is provided with a mounting column 512 on the side facing the base 1, the mounting column 512 is arranged in the center hole of the two annular magnets 31, the center of the mounting column 512 is provided with a avoiding groove, the avoiding groove covers the center column 1211, and the compactness of the layout of the mounting seat 51 and the base 1 is further improved. Specifically, the positioning column 511 is located at the center of the avoiding groove. Wherein, a second annular groove is arranged on the outer periphery of the avoiding groove, the receiving coil 52 is arranged in the second annular groove, so that the layout of the receiving coil 52 and the mounting seat 51 and the base 1 is more compact, the miniaturization of the magnetic suspension laser radar is further improved, and the magnetic suspension laser radar can be applied to more assembly scenes.

[0042] In the embodiment, the main circuit board 2 is provided with a receiving module, the radar unit 53 comprises a transmitting module, and the transmitting module is in communication connection with the receiving module. The radar unit 53 communicates the distance data of the detected target object to the receiving module, the receiving module is connected with one of the transmission lines in the flat cable 22, so that the distance data of the target object can be transmitted to the external display device through the transmission line. Specifically, the radar unit 53 further comprises an integrated circuit board, a laser emitter, an optical receiver and a chip arranged on the integrated circuit board. The laser emitter is used to emit a plurality of laser beams outward. When the laser beams meet the target object, part of the light will be reflected back. The optical receiver is used to capture the reflected light. The chip is provided with a timer for recording the interval between the laser emission time and the receiving time. The chip is also provided with a calculation module for calculating the distance of the target object according to the time interval and the speed of light. One pin of the chip is connected with the transmitting module to transmit the calculated distance value of the target object to the transmitting module, and then the transmitting module communicates the distance value of the target object to the receiving module on the main board 21. The structure and principle of the radar unit 53 can refer to the prior art, and will not be described in detail here. In the embodiment, the transmitting module and the receiving module are in communication connection through Bluetooth. Bluetooth communication is a conventional technical means in the communication field and does not belong to the key protection content of the embodiment.

[0043] In the embodiment, the magnetic suspension laser radar further comprises an optical cover 7, wherein the optical cover 7 is arranged on the base 1. The optical cover 7 can protect the magnetic suspension assembly 3, the driving motor 4 and the radar assembly 5, and improve the service life of the magnetic suspension laser radar. The optical cover 7 has high transmittance and radiation resistance, which ensures that the emission and reception of laser light are not affected, and prevents external radiation from interfering with the laser emitter and the optical receiver. Further, a protrusion 13 is arranged around one end of the base 1 facing the optical cover 7, and a groove 71 is arranged around the optical cover 7 corresponding to the protrusion 13. When the optical cover 7 is arranged on the base 1, the protrusion 13 is arranged in the groove 71. The arrangement of the protrusion 13 and the groove 71 can position the assembly of the optical cover 7 and the base 1, and realize quick assembly. At the same time, it can also prevent foreign matter and water vapor from entering the inside of the magnetic suspension laser radar, and improve the service life of the magnetic suspension laser radar.

[0044] Further, a stud is arranged in the second accommodating groove 12, and an assembly hole corresponding to the stud is arranged on the optical cover 7. The magnetic suspension laser radar further comprises a locking piece, and the locking piece is in threaded connection with the stud. Specifically, the stud comprises a threaded groove, and the locking piece is selected from a bolt. The bolt has an external thread, and the threaded groove has an internal thread, so as to realize the threaded connection between the locking piece and the stud.

[0045] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A magnetic levitation lidar, characterized by, The utility model relates to a kind of radar module, including: Base (1) and bottom plate (6), the base (1) includes first accommodating groove (11) and second accommodating groove (12), annular baffle (120) is provided in the second accommodating groove (12), the annular baffle (120) is used to separate the second accommodating groove (12) into first space (121) and second space (122), the first space (121) is communicated with the first accommodating groove (11);The bottom plate (6) is used to block the first accommodating groove (11); Main circuit board (2), including main plate (21) and flat cable (22), the main plate (21) is placed in the first accommodating groove (11), and the flat cable (22) is partially exposed to the base (1); Magnetic suspension assembly (3), including two opposite and magnetically identical annular magnets (31) and a power coil (32), the power coil (32) is located in the center hole of two annular magnets (31), the power coil (32) and one of the annular magnets (31) are placed in the first space (121), and the main plate (21) is electrically connected with the power coil (32); Driving motor (4), the main plate (21) is electrically connected with the driving motor (4), and the driving motor (4) includes a stator and a rotor, and the stator is placed in the second space (122); Radar assembly (5), including mounting seat (51), receiving coil (52) and radar unit (53), the mounting seat (51) is connected with the other annular magnet (31), the rotor is connected with the mounting seat (51), the receiving coil (52) is electrically connected with the radar unit (53), and the radar unit (53) is connected with the mounting seat (51).

2. The magnetic suspension lidar of claim 1, wherein, The center of the first space (121) is provided with a center column (1211), the center column (1211) is provided with a through hole, the mounting seat (51) is provided with a positioning column (511) opposite to the through hole, the positioning column (511) is provided with a lug (5111), and the lug (5111) is clamped with the bottom surface of the center column (1211) after the positioning column (511) passes through the through hole.

3. The magnetic suspension lidar of claim 2, wherein, The radar assembly (5) further includes a snap spring (54), which is sleeved on the outer periphery of the positioning column (511) and located between the lug (5111) and the bottom surface of the center column (1211).

4. The magnetic suspension lidar of claim 2, wherein, The outer periphery of the center column (1211) is provided with a first annular groove, and the power coil (32) is placed in the first annular groove.

5. The magnetic suspension lidar of claim 4, wherein, One side of the mounting seat (51) towards the base (1) is provided with a mounting column (512), the mounting column (512) is placed in the center hole of the two annular magnets (31), the center of the mounting column (512) is provided with a avoiding slot, the avoiding slot is covered on the center column (1211), the outer periphery of the avoiding slot is provided with a second annular groove, and the receiving coil (52) is placed in the second annular groove.

6. The magnetic suspension lidar of claim 1, wherein, The main circuit board (2) is provided with a receiving module, and the radar unit (53) comprises a transmitting module which is in communication connection with the receiving module.

7. The magnetic suspension lidar of claim 1, wherein, The magnetic suspension laser radar further comprises an optical cover (7) which is covered on the base (1).

8. The magnetic suspension lidar of claim 7, wherein, A protrusion (13) is arranged around one end of the base (1) which faces the optical cover (7), and the optical cover (7) is correspondingly provided with a groove (71).

9. The magnetic suspension lidar of claim 8, wherein, A stud is arranged in the second accommodating groove (12), the optical cover (7) is provided with a mounting hole corresponding to the stud, and the magnetic suspension laser radar further comprises a locking member which is in threaded connection with the stud.

10. The magnetic suspension lidar of claim 1, wherein, A wire passing hole is arranged on the sidewall of the first accommodating groove (11), and the wire (22) is exposed to the base (1) through the wire passing hole.

Images