Photoelectric scanning devices, motors, and self-driving cars

Abstract

The embodiments of the present application provide a photoelectric scanning device, a motor, and an autonomous vehicle, relating to the technical field of photoelectric scanning equipment. The embodiments are used to simplify the structure of the photoelectric scanning device and reduce the probability of coupling failure between coils in the wireless transmission component of the photoelectric scanning device. The photoelectric scanning device includes a motor, a wireless transmission component, and an environmental detection device. The motor includes a stator, a rotor, and a base, wherein the stator is fixedly mounted on the base, and the rotor is sleeved on the stator. The wireless transmission component includes a first coil and a second coil, wherein the first coil and the environmental detection device are respectively mounted on the rotor and electrically connected to the environmental detection device, and the second coil is mounted on the base and electrically connected to a control host. The first coil and the second coil are magnetically coupled to achieve wireless signal and / or power transmission between the control host and the environmental detection device.

Description

Technical Field

[0001] The present application relates to the technical field of photoelectric scanning equipment, and in particular to a photoelectric scanning device, a motor, and an autonomous driving vehicle. Background Art

[0002] When driving autonomously, self-driving cars generally use photoelectric scanning devices installed on the car to detect and identify the surrounding environment, and then make behavioral decisions based on the environmental information obtained.

[0003] In the related art, the photoelectric scanning device generally includes a radar and a motor, and the motor is generally a separate motor, such as Figure 1 As shown, the motor includes a stator (not shown), a rotor (not shown), a fixed shaft 300, and a rotating body 200. The rotating body 200 is rotatably mounted on the fixed shaft 300; the stator is mounted on the fixed shaft 300, and the rotor is mounted on the rotating body 200. A radar is mounted on one end of the rotating body 200 and rotates with the rotating body to increase the radar's recognition range. The power and control signals required for radar operation are transmitted wirelessly. For example, the power signal is transmitted to the radar by a power transmission component located at one end of the motor, and the control signal is transmitted to the radar by a signal transmission component located at the other end of the motor. The power transmission assembly includes an inner power transmission ring 121 and an outer power transmission ring 122, while the signal transmission assembly includes an inner signal ring 131 and an outer signal ring 132. The inner power transmission ring 121 is mounted on the fixed shaft 300 via a first adapter 400, while the outer power transmission ring 122 is mounted on the rotating body 200 via a second adapter 500. The inner power transmission ring 121 wirelessly transmits power to the outer power transmission ring 122 through magnetic coupling. The inner signal ring 131 is mounted on the fixed shaft 300, while the outer signal ring 132 is mounted on the rotating body 200 and sleeved outside the inner signal ring 131. The inner signal ring 131 wirelessly transmits signals to the outer signal ring 132 through magnetic coupling.

[0004] However, the above-mentioned photoelectric scanning device includes many components and has a complex structure. In addition, the assembly process of the above-mentioned photoelectric scanning device is complicated and requires multiple assemblies, resulting in large cumulative assembly tolerances, which in turn leads to a high probability of coupling failure of the power transmission components and / or signal transmission components. Summary of the Invention

[0005] Embodiments of the present application provide a photoelectric scanning device, a motor, and an autonomous driving vehicle, which are used to simplify the structure of the photoelectric scanning device and reduce the probability of coupling failure of power transmission components and / or signal transmission components in the photoelectric scanning device.

[0006] In a first aspect, an embodiment of the present application provides a photoelectric scanning device, which includes a motor, a wireless transmission component and an environmental detection device, wherein the motor includes a stator, a rotor and a base, the stator is fixedly mounted on the base, and the rotor is sleeved on the stator; the wireless transmission component includes a first coil and a second coil, the first coil and the environmental detection device are respectively mounted on the rotor, and the first coil is electrically connected to the environmental detection device, the second coil is mounted on the base, and the second coil is electrically connected to the control host; the first coil and the second coil are magnetically coupled to realize wireless signal and / or power transmission between the control host and the environmental detection device.

[0007] In the photoelectric scanning device provided in this embodiment, the first coil is installed on the rotor, and the second coil is installed on the base. The installation of the wireless transmission component is realized by using a motor. Compared with the related art, the adapter is eliminated; in addition, the environmental detection device is installed on the rotor, which realizes the direct driving of the environmental detection device by the motor. Compared with the related art, the fixed shaft and the rotating body are eliminated. The elimination of the adapter, the fixed shaft and the rotating body makes the structure of the photoelectric scanning device simpler, which helps to reduce the overall volume of the photoelectric scanning device; in addition, the simple structure of the photoelectric scanning device reduces the number of assemblies during the assembly process of the photoelectric scanning device, thereby reducing the cumulative tolerance caused by multiple assemblies and reducing the failure probability of the magnetic coupling between the first coil and the second coil in the wireless transmission component.

[0008] In one possible embodiment, the base includes a bottom plate and an annular sidewall disposed on the bottom plate. The annular sidewall is coaxial with the stator, and the stator and rotor are located within a sidewall space enclosed by the annular sidewall. This design protects the stator and rotor within the sidewall space, preventing foreign objects from affecting the rotor's movement.

[0009] In a possible implementation, the first coil is mounted on the outer circumferential surface of the rotor, the second coil is mounted on the inner wall surface of the annular side wall, and the second coil is coaxially sleeved outside the first coil.

[0010] In another possible embodiment, a first mounting groove is defined on the outer circumference of the rotor, and the first coil is mounted within the first mounting groove. Providing the first mounting groove prevents the first coil from sliding on the outer circumference of the rotor, thereby ensuring reliable installation of the first coil and accurate installation position. Furthermore, this prevents the rotor from increasing in size after the first coil is installed, thereby reducing the overall size of the motor.

[0011] In one possible embodiment, a second mounting groove is defined on the inner surface of the annular sidewall, and the second coil is mounted within the second mounting groove. This design prevents the second coil from sliding on the inner surface of the annular sidewall, thereby ensuring reliable installation and accurate positioning of the second coil. Furthermore, the second coil's installation on the annular sidewall prevents it from interfering with the rotation of the rotor and also prevents the overall size of the motor from increasing due to its installation.

[0012] In another possible embodiment, the first coil and the second coil are located within the sidewall space, with the first coil mounted on the bottom end surface of the rotor facing the base plate, and the second coil mounted on the base plate within the annular sidewall. This arrangement places the first and second coils closer to the connection between the base and the stator, minimizing the impact of assembly tolerances between the base and the stator on the coupling tolerance between the first and second coils, thereby reducing the probability of failure in the magnetic coupling between the first and second coils.

[0013] In one possible embodiment, a third mounting groove is defined on the bottom end surface of the rotor, and the first coil is mounted within the third mounting groove. Providing the third mounting groove prevents the first coil from sliding on the bottom end surface, thereby ensuring reliable installation of the first coil and accurate installation position. Furthermore, this prevents the rotor from increasing in size after the first coil is installed, thereby reducing the overall size of the motor.

[0014] In one possible embodiment, a fourth mounting slot is defined on the side of the base plate facing the rotor, and the second coil is mounted within this fourth mounting slot. This design prevents the second coil from sliding on the inner surface of the annular sidewall, thereby ensuring reliable installation and accurate positioning of the second coil. Furthermore, the second coil's installation on the base plate prevents it from interfering with the rotation of the rotor and increasing the overall size of the motor.

[0015] In a possible embodiment, the stator and the base are connected via a first flange. The connection between the stator and the base via the first flange is convenient, reliable, and easy to disassemble and assemble, and facilitates maintenance of the motor interior.

[0016] In one possible embodiment, the stator and the base are integrally formed. Designing the stator and base as an integral structure further integrates the motor, eliminates the need for assembly of the stator and base, and reduces the number of assembly steps during the motor assembly process, thereby minimizing the cumulative tolerances caused by multiple assembly steps.

[0017] In one possible embodiment, the wireless transmission component further includes a third coil and a fourth coil, the third coil being mounted on the rotor and the fourth coil being mounted on the base. Wireless power transmission is achieved between the control host and the environmental detection device through magnetic coupling between the first and second coils, and wireless signal transmission is achieved between the control host and the environmental detection device through magnetic coupling between the third and fourth coils. Using the first and second coils for wireless power transmission and the third and fourth coils for wireless signal transmission, with both wireless signals and wireless power transmitted using independent coils, results in higher transmission efficiency and better reliability.

[0018] In one possible embodiment, the first coil is disposed on the outer circumference of the rotor, the second coil is disposed on the base and coaxially sleeved around the first coil; the third coil is disposed on the bottom end surface of the rotor facing the base, and the fourth coil is mounted on the base. By disposing the first and second coils for wireless signal transmission, and the third and fourth coils for wireless power transmission, in separate locations, mutual interference between wireless signal transmission and wireless power transmission can be avoided.

[0019] In one possible implementation, the first and third coils are both disposed on the outer circumference of the rotor; the second coil is disposed on the base and coaxially sleeved around the outside of the first coil; and the fourth coil is disposed on the base and coaxially sleeved around the outside of the third coil. This design places the first and third coils on the same surface of the rotor, making their installation more convenient.

[0020] In one possible embodiment, the first and third coils are both located on the bottom end surface of the rotor facing the base, while the second and fourth coils are mounted on the base. This design places the first and third coils on the same surface of the rotor, making their installation more convenient. Furthermore, the first and third coils are located closer to the connection between the base and the stator, minimizing the impact of assembly tolerances between the base and the stator on the installation tolerances of the first and third coils.

[0021] In a possible embodiment, a magnetic isolation member is provided between the first coil and the rotor. By providing the magnetic isolation member, interference with wireless power transmission caused by the magnetic field generated when the motor is operating can be avoided.

[0022] In one possible embodiment, the signal transmission assembly further includes an inner signal magnetic ring and an outer signal magnetic ring, the third coil being wound around the inner signal magnetic ring, and the fourth coil being wound around the outer signal magnetic ring. The inner signal magnetic ring and the outer signal magnetic ring provide a mounting base for the third and fourth coils, supporting them. Furthermore, both the inner signal magnetic ring and the outer signal magnetic ring are annular structures made of a magnetic conductor, providing an anti-interference effect.

[0023] In one possible embodiment, a connection interface for installing an environment detection device is provided at one end of the rotor. With this design, the environment detection device can be directly connected to the rotor using the connection interface, making it easy to disassemble, assemble, and replace the environment detection device.

[0024] In one possible embodiment, the connection interface includes a mounting block symmetrically arranged relative to the rotor axis, the mounting block having a mounting hole. This design allows the environment detection device to be directly mounted to the motor using bolts inserted through the mounting hole, which is simple and convenient. Furthermore, the mounting block and mounting hole are simple to manufacture and easy to implement.

[0025] In a possible implementation, the environment detection device includes a laser radar, an infrared radar, a millimeter-wave radar, or a camera.

[0026] In the second aspect, an embodiment of the present application provides a motor for driving an environmental detection device, the motor including a stator, a rotor, a base and a wireless transmission component; the stator is fixedly mounted on the base, the rotor is sleeved on the stator, the wireless transmission component includes a first coil and a second coil, the first coil is mounted on the rotor, and the second coil is mounted on the base; the environmental detection device is mounted on the rotor, and the environmental detection device is electrically connected to the first coil; the second coil is electrically connected to a control host that controls the environmental detection device; wireless signal and / or power transmission is achieved between the control host and the environmental detection device through magnetic coupling between the first coil and the second coil.

[0027] With the motor provided in this embodiment, the first coil is installed on the rotor, and the second coil is installed on the base. The motor is used to realize the installation of the wireless transmission component, and the adapter is eliminated compared with the related art; in addition, the environmental detection device is installed on the rotor, which realizes the direct drive of the environmental detection device by the motor, and the fixed shaft and the rotating body are eliminated compared with the related art. The elimination of the adapter, the fixed shaft and the rotating body makes the motor structure simpler, which is conducive to the miniaturization of the motor, and thus helps to reduce the overall volume of the photoelectric scanning device; in addition, the simple motor structure reduces the number of assemblies during the motor assembly process, thereby reducing the cumulative tolerance caused by multiple assemblies, and reducing the failure probability of the magnetic coupling between the first coil and the second coil in the wireless transmission component.

[0028] In a third aspect, embodiments of the present application provide an autonomous vehicle, comprising a vehicle body and a photoelectric scanning device as described in the first aspect, or a motor as described in the second aspect, mounted on the vehicle body. Because the autonomous vehicle includes the photoelectric scanning device as described in the first aspect, or the motor as described in the second aspect, the autonomous vehicle also possesses the advantages of the aforementioned photoelectric scanning device or motor. For details, please refer to the relevant description above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a cross-sectional view of a motor in the related art;

[0030] Figure 2 A schematic diagram of the structure of an autonomous driving vehicle provided in an embodiment of the present application;

[0031] Figure 3 A schematic structural diagram of a photoelectric scanning device provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of a motor provided in an embodiment of the present application;

[0033] Figure 5 for Figure 4 Exploded view of the motor;

[0034] Figure 6 for Figure 5 The main view of the rotor and stator;

[0035] Figure 7 for Figure 5 A cross-sectional view of the middle base;

[0036] Figure 8 for Figure 5 Cross-sectional view of the motor;

[0037] Figure 9 for Figure 4 A cross-sectional view of another embodiment of the motor;

[0038] Figure 10 for Figure 9 Main view of the stator and rotor;

[0039] Figure 11 for Figure 9 A cross-sectional view of the middle base;

[0040] Figure 12 for Figure 4 A cross-sectional view of another embodiment of the motor;

[0041] Figure 13 for Figure 12 A cross-sectional view of the middle base;

[0042] Figure 14 A schematic structural diagram of a motor provided in another embodiment of the present application;

[0043] Figure 15 for Figure 14 Exploded view of the motor;

[0044] Figure 16 for Figure 14 Bottom view of the middle motor;

[0045] Figure 17 for Figure 14 A cross-sectional view of the middle base;

[0046] Figure 18 for Figure 14 Cross-sectional view of the motor. DETAILED DESCRIPTION

[0047] It should be noted that, for the sake of convenience of description, this article describes the motor structure with the Y-axis coordinate direction marked in the accompanying drawings as the up and down directions. Obviously, the up and down are based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0048] In the related art, the photoelectric scanning device includes a radar and a motor, wherein the motor is a separate motor, such as Figure 1 As shown, the motor includes a stator, a rotor, a fixed shaft 300, and a rotating body 200. The rotating body 200 has a central shaft hole, into which the fixed shaft 300 is inserted. A bearing is disposed between the fixed shaft 300 and the inner wall of the shaft hole. The stator is mounted on the fixed shaft 300, and the rotor is mounted on the rotating body 200. The radar is mounted on the rotating body 200 and rotates with the rotating body 200 to increase the radar's recognition range. The motor also includes a wireless transmission assembly, which includes a power transmission assembly and a signal transmission assembly. The power transmission assembly is used for wireless power transmission required for radar operation, while the signal transmission assembly is used for wireless signal transmission required for radar operation. The power transmission assembly includes an inner power transmission ring 121, an outer power transmission ring 122, a first power transmission lead (not shown), and a second power transmission lead (not shown). The signal transmission assembly includes an inner signal ring 131, an outer signal ring 132, a first signal lead (not shown), and a second signal lead (not shown).

[0049] The inner power transmission ring 121 is mounted on the fixed shaft 300 via a first adapter 400, while the outer power transmission ring 122 is mounted on the rotating body 200 via a second adapter 500. The second adapter 500 can be located at one end of the rotating body 200, between the first adapter 400 and the rotating body 200. A first power transmission lead has one end connected to the inner power transmission ring 121 and the other end extending from the bottom of the motor to connect to an external power source. A second power transmission lead has one end connected to the outer power transmission ring 122 and the other end passing through a central hole in the fixed shaft 300 and extending from the top of the rotating body 200 to connect to the radar. When the photoelectric scanning device is in operation, the operating current is transmitted from the first power transmission lead to the inner power transmission ring 121. The inner power transmission ring 121 wirelessly transmits power to the outer power transmission ring 122 through magnetic coupling. The outer power transmission ring 122 then transmits the operating current to the radar via the second power transmission lead.

[0050] The inner signal ring 131 is mounted on the fixed shaft 300, near its top. The outer signal ring 132 is installed in the axial hole of the rotating body 200, with an interference fit against the inner wall of the hole. A first signal lead is connected to the inner signal ring 131 at one end and extends downward through the fixed shaft 300, extending from the bottom of the fixed shaft 300 to connect to the control device. A second signal lead is connected to the outer signal ring 132 at one end and extends out of the rotating body 200 to connect to the radar. When the photoelectric scanning device is operating, the control signal is transmitted from the first signal lead to the inner signal ring 131. The inner signal ring 131 transmits the wireless signal to the outer signal ring 132 through magnetic coupling. The outer signal ring 132 then transmits the control signal to the radar via the second signal lead.

[0051] During assembly of the aforementioned motor, the first adapter 400, signal inner ring 131, and stator are generally first mounted on the fixed shaft 300, and the power transmission inner ring 121 is mounted on the first adapter 400. Next, one end of the first signal lead is connected to the signal inner ring 131, and the other end is extended downward through the center hole of the fixed shaft 300, passing over the rotating body 200 and protruding from the bottom of the fixed shaft 300, thus completing the wiring of the first signal lead. The second adapter 500, bearing, rotor, and signal outer ring 132 are then mounted on the axial hole of the rotating body 200, and the power transmission outer ring 122 is mounted on the second adapter 500. Next, one end of the second power transmission lead is connected to the power transmission outer ring 122, and the other end is extended upward through the center hole of the fixed shaft 300, protruding from the top of the fixed shaft 300 and the rotating body 200, thus completing the wiring of the second power transmission lead. The assembled fixed shaft 300 is then assembled and inserted into the axial hole of the rotating body 200.

[0052] The motors described in the related art include numerous components and a relatively complex structure. Furthermore, the motor assembly process demonstrates that, due to their separate design, multiple assembly steps are required during assembly. These multiple assembly steps result in significant cumulative tolerances, impacting the relative positional accuracy between the power transmission inner ring 121 and the power transmission outer ring 122, as well as the relative positional accuracy between the signal inner ring 131 and the signal outer ring 132. This increases the probability of magnetic coupling failure between the power transmission inner ring 121 and the power transmission outer ring 122, and between the signal inner ring 131 and the signal outer ring 132. Furthermore, the second power transmission lead must pass through the center hole of the fixed shaft 300, and the first signal lead must also pass through the center hole of the fixed shaft 300. The long fixed shaft 300 complicates machining the center hole of the fixed shaft 300. The long fixed shaft 300 also lengthens the second power transmission lead and the first signal lead, which increases costs. Furthermore, an excessively long first signal lead can pose a safety hazard.

[0053] In view of this, in the photoelectric scanning device provided in the embodiment of the present application, the environmental detection device and the wireless transmission component are mounted on the motor, and the motor structure is utilized to achieve the installation of the wireless transmission component, eliminating the need for an adapter compared to related technologies. The motor directly drives the environmental detection device, eliminating the need for a fixed shaft 300 and a rotating body 200 compared to related technologies. The omission of the adapter, fixed shaft 300, and rotating body 200 simplifies the structure of the photoelectric scanning device. Furthermore, since the number of components included in the photoelectric scanning device is reduced, the number of assemblies is reduced, thereby reducing the cumulative tolerances caused by multiple assemblies and the probability of coupling failure between the coupling coils in the wireless transmission component. In addition, the first signal lead and the second power transmission lead do not need to pass through the center hole of the fixed shaft 300, eliminating the need for perforation processing of shaft parts, reducing the difficulty of wiring.

[0054] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0055] Figure 2 A schematic diagram of the structure of an autonomous driving vehicle provided in an embodiment of the present application is shown in FIG. Figure 2As shown, autonomous vehicles (full name in English: Autonomous vehicles), also known as driverless cars, are intelligent cars that achieve unmanned driving through a computer system. In this embodiment, the autonomous vehicle includes a vehicle body 1, a control host, and a photoelectric scanning device 2. The vehicle body 1 includes a body, a chassis, and a power unit, which is similar to a traditional car and will not be described here. The photoelectric scanning device 2 is placed on the top of the vehicle body or other position where there is no visual obstruction. The control host is installed in the vehicle body 1. The control host includes a power supply and a control device. The power supply provides power to the photoelectric scanning device 2. The control signal is transmitted between the control device and the photoelectric scanning device 2, thereby controlling the photoelectric scanning device 2 to detect and identify the surrounding environment, and then making behavioral decisions based on the environmental information obtained to achieve autonomous driving.

[0056] Figure 3 A schematic diagram of the structure of a photoelectric scanning device provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the photoelectric scanning device 2 includes a motor 4 and an environment detection device 3. The environment detection device 3 includes, but is not limited to, a laser radar, an infrared radar, a millimeter-wave radar, or a camera. The environment detection device 3 rotates under the drive of the motor 4, thereby obtaining a larger scanning range and improving the recognition range of the photoelectric scanning device 2.

[0057] In this embodiment, motor 4 is used to drive the environment detection device 3 to rotate. Motor 4 includes a stator and a rotor. Generally, the stationary portion of motor 4 during operation is referred to as the stator, whose primary function is to generate a magnetic field. The rotating portion of motor 4 during operation is referred to as the rotor, whose primary function is to generate electromagnetic torque and induced electromotive force, and is the hub of energy conversion in motor 4.

[0058] Scene 1

[0059] Figure 4 A schematic diagram of the structure of a motor provided in an embodiment of the present application is shown. Figure 5 for Figure 4 The exploded diagram of the motor is as follows: Figure 4 and Figure 5 As shown, the motor 4 includes a stator 11, a rotor 5, a base 6 and a wireless transmission component 8. The wireless transmission component 8 includes a first coil 81 and a second coil 82. The second coil 82 and the second coil 82 are coaxial ring structures. The two coils achieve wireless transmission of control signals and / or working currents through magnetic coupling. Figure 5 The wireless transmission component 8 also includes a first lead 83 connected to the first coil 81 and a second lead 84 connected to the second coil 82; the first lead 83 extends upward and extends from the top of the rotor 5, and is used to connect to the environmental detection device 3 installed on the motor 4; the second lead 84 extends downward and extends from the bottom of the base 6, and is used to connect to the control host.

[0060] Figure 6 for Figure 5 The front view of the rotor 5 and the stator 11 is as follows: Figure 6 As shown, in general, the motor 4 is placed vertically, and the central axis of the stator 11 is defined as the first axis. In this embodiment, the first axis is a vertical straight line, that is, the first axis is parallel to Figure 6 Y axis of the coordinate system. The rotor 5 is sleeved and mounted on the stator 11 and can rotate around the first axis. The lower end of the stator 11 extends out of the bottom end face 54 of the rotor 5. The stator 11 is also connected to the motor lead 10 for controlling the normal operation of the motor 4. The bottom end of the stator 11 is connected to the first flange. The base 6 is arranged below the stator 11 and is connected to the stator 11 through the first flange, thereby achieving fixed installation of the base 6 and the stator 11. In this embodiment, by providing the first flange, it is convenient to achieve connection and disassembly between the stator 11 and the base 6, and to facilitate maintenance of the motor 4. In a possible implementation, the base 6 and the stator 11 are an integrated structure, that is, a book, and the base 6 is part of the stator 11. With this design, the first flange and the fasteners passing through the first flange are omitted, so that the motor 4 is further integrated, the number of assemblies during the assembly of the motor 4 is reduced, and the cumulative tolerance of multiple assemblies is reduced.

[0061] like Figure 6 As shown, the rotor 5 is a rotating structure with the first axis as the central axis. A mounting hole is provided in the middle of the rotor 5, and the rotor 5 is mounted on the stator 11. The rotor 5 includes a vertically extending outer peripheral surface 53 and a horizontally extending top surface and bottom end surface 54. The outer peripheral surface 53 is provided with a first mounting groove 52. The first mounting groove 52 is an annular groove surrounding the first axis, and the center line of the annular groove coincides with the first axis. The first mounting groove 52 has a groove bottom surface, and the first coil 81 is installed in the first mounting groove 52. A magnetic isolation member 9 is provided between the first coil 81 and the groove bottom surface of the first mounting groove 52. The magnetic isolation member 9 is used to prevent the magnetic field generated by the motor 4 when working from interfering with the wireless transmission component 8. The magnetic isolation member 9 is an annular structure attached to the groove bottom surface of the first mounting groove 52, for example, it can include two semicircular magnetic isolation tiles that are connected or spliced.

[0062] Figure 7 for Figure 5 A cross-sectional view of the middle base 6 is shown in FIG. Figure 7 As shown, the base 6 is a structural member coaxially arranged with the stator 11. For example, the base 6 can be a disc structure with an opening at the top, the axis of which coincides with the axis of the stator 11. The base 6 includes a bottom plate 62 and an annular sidewall 61 mounted on the bottom plate 62. The bottom plate 62 can be a circular plate with the first axis as the central axis. The bottom plate 62 has a central hole 621 corresponding to the first axis. The lower end of the stator 11 is inserted into the central hole 621.

[0063] The annular sidewall 61 is an annular sidewall with the first axis as its central axis. The annular sidewall 61 extends upward from the bottom plate 62. The space enclosed by the annular sidewall 61 can be defined as the sidewall space 63. After the stator 11 is connected to the bottom plate 62, the stator 11 and the rotor 5 are both located in the sidewall space 63. The top of the rotor 5 is slightly higher than the top of the annular sidewall 61. The bottom end surface 54 of the rotor 5 is opposite the bottom plate 62, and the outer peripheral surface 53 of the rotor 5 is opposite the inner wall surface of the annular sidewall 61. As can be seen from the above description, the stator 11 and the rotor 5 are located in the sidewall space 63, and the base 6 protects the stator 11 and the rotor 5, preventing foreign objects from interfering with the movement of the rotor 5.

[0064] The inner surface of the annular sidewall 61 is provided with a second mounting groove 611. This second mounting groove 611 may be an annular groove formed on the inner surface of the annular sidewall 61. The centerline of the annular groove coincides with the first axis. The opening of the second mounting groove 611 opposes the opening of the first mounting groove 52 and faces the first axis. The second mounting groove 611 has a groove bottom surface, which is an annular surface surrounding the first axis; and upper and lower side surfaces located on either side of the groove bottom surface. The upper and lower side surfaces, together with the groove bottom surface, constitute the second mounting groove 611.

[0065] In one possible embodiment, the upper side of the second mounting groove 611 is removable. That is, the second mounting groove 611 includes a bottom surface and a lower side surface, and the cross-section of the second mounting groove is L-shaped, with the plane passing through the first axis as the cross-section. This design facilitates the installation of the second coil 82 from the top of the base 6.

[0066] Figure 8 for Figure 5 The cross-sectional view of the motor is as follows: Figure 8 As shown, the first coil 81 is installed in the first mounting groove 52, and the second coil 82 is installed in the second mounting groove 611. The first mounting groove 52 and the second mounting groove 611 are coaxially arranged, and the second coil 82 is located outside the first coil 81. A magnetic coupling can be formed between the first coil 81 and the second coil 82, and the coupled electromagnetic field is used as a medium to achieve wireless transmission of electrical energy and / or signals. The motor 4 in this embodiment can achieve wireless transmission of electrical energy or wireless transmission of control signals through the magnetically coupled first coil 81 and the second coil 82, or achieve simultaneous transmission of electrical energy and control signals.

[0067] The first coil 81 and the second coil 82 are not limited to being arranged at the above positions. Figures 9 to 11 As shown, the first coil 81 and the second coil 82 may also be arranged between the rotor 5 and the base plate 62 .

[0068] Figure 9 for Figure 4 A cross-sectional view of another embodiment of the motor, Figure 10for Figure 9 The main view of the stator and rotor; Figure 9 and Figure 10 As shown, in one possible embodiment, the bottom end surface 54 of the rotor 5 is provided with a third mounting groove 55. The third mounting groove 55 may be an annular groove surrounding the first axis, with the opening facing the bottom plate 62. The first coil 81 may be mounted in the third mounting groove 55, for example, by bonding, embedding, or snapping.

[0069] Figure 11 for Figure 9 The cross-sectional view of the middle base is as follows: Figure 11 As shown, the surface of the base plate 62 facing the rotor 5 is provided with a fourth mounting slot 622 arranged around the first axis. The fourth mounting slot 622 is opposite the opening of the third mounting slot 55 and faces the rotor 5. The fourth mounting slot 622 is coaxial with the third mounting slot 55 and is located directly below the third mounting slot 55. The second coil 82 is mounted in the fourth mounting slot 622, for example, by bonding, embedding, or snapping. The second coil 82 is coaxial with the first coil 81 and is located below the first coil 81.

[0070] In this embodiment, the first coil 81 and the second coil 82 are arranged between the bottom end surface 54 of the rotor 5 and the bottom plate 62. This is closer to the connection position between the base 6 and the stator 11. The relative position accuracy between the first coil 81 and the second coil 82 is easier to ensure, thereby further reducing the probability of coupling failure between the first coil 81 and the second coil 82.

[0071] In the above embodiment, by providing the first mounting groove 52 and the second mounting groove 611, as well as the third mounting groove 55 and the fourth mounting groove 622, the positions of the first coil 81 and the second coil 82 are fixed, and the accuracy of the installation positions of the first coil 81 and the second coil 82 can be ensured; in addition, the first coil 81 is accommodated in the rotor 5, and the second coil 82 is accommodated in the base 6, so that the first coil 81 and the second coil 82 will not increase the volume of the motor, thereby facilitating further reduction in the volume of the motor 4.

[0072] Figures 12 to 13 FIG. 4 shows a schematic structural diagram of another embodiment of the motor 4 provided in this application. Figure 12 and Figure 13 As shown, in this embodiment, the outer circumferential surface 53 of the rotor 5 does not need to be provided with the first mounting groove 52, and the base 6 does not need to be provided with the second mounting groove 611. The first coil 81 in the motor 4 is directly sleeved on the outer circumferential surface 53 of the rotor 5, and the second coil 82 is directly installed on the annular side wall 61 by means of adhesive, connectors or interference fit.

[0073] In one possible embodiment, the bottom end surface 54 of the rotor 5 does not need to be provided with the third mounting groove 55, and the bottom plate 62 does not need to be provided with the fourth mounting groove 622. The first coil 81 is installed on the bottom end surface 54 of the rotor 5 by means of adhesive or connectors, and the second coil 82 is installed on the bottom plate 62 by means of adhesive or connectors.

[0074] The working principle of the motor 4 is: when the motor 4 is working, the rotor 5 rotates around the first axis on the stator 11, thereby driving the environmental detection device 3 to rotate, and the power supply current of the power supply in the control host and / or the control signal of the control device in the control host enter the second coil 82 through the second lead 84. The second coil 82 wirelessly transmits the power supply current and / or control signal to the first coil 81 through magnetic coupling between the coils, and then further transmits it to the environmental detection device 3 installed on the motor 4 through the first lead 83, thereby realizing control or power supply of the environmental detection device 3.

[0075] Scene 2

[0076] Figures 14 to 18 Another motor 4 provided in the embodiment of the present application is shown. Figure 14 and Figure 18 As can be seen, the motor 4 includes a stator 11, a rotor 5, a base 6, and two wireless transmission components. The structural composition, installation method, or connection method of the stator 11, rotor 5, and base 6 are the same as those of the stator 11, rotor 5, and base 6 in the above-mentioned scenario 1. For details, please refer to the relevant description in the above-mentioned scenario 1, and therefore, no further description is given. This embodiment differs from the above-mentioned embodiment in that it includes two wireless transmission components: a power transmission component 12 for power transmission and a signal transmission component 13 for signal transmission.

[0077] Figure 14 A schematic diagram of the structure of a motor provided in another embodiment of the present application is shown in FIG. Figure 14 As shown, the top surface of the rotor 5 is provided with a first extension opening 57 and a second extension opening 56 , and the first extension opening 57 and the second extension opening 56 are used for extending the leads of the wireless transmission component in the motor 4 .

[0078] A connection interface and a code disk 7 are provided on the top of the rotor 5. The connection interface includes a waist-shaped mounting block 51 symmetrically arranged relative to the first axis. The waist-shaped mounting block 51 is provided with at least one mounting hole, which is a threaded hole. The environment detection device 3 is mounted to the rotor 5 of the motor 4 via a threaded fastener inserted through the threaded hole. This design allows the environment detection device 3 to be directly docked with the motor 4, improving the convenience of assembly and disassembly of the environment detection device 3.

[0079] Code disk 7 comprises a circular plate with a plurality of equally spaced rectangular holes. Code disk 7 is coaxially arranged with rotor 5. When motor 4 rotates, code disk 7 rotates at the same speed as motor 4. Code disk 7 can detect the speed and rotation angle of motor 4, thereby enabling control of the speed and rotation angle of motor 4. Photoelectric scanning device 2 controls the rotation speed and direction of environment detection device 3 by controlling motor 4.

[0080] Figure 15 for Figure 14 For the exploded view of the motor, please refer to Figure 15 The power transmission component 12 includes an inner power transmission ring 121 and an outer power transmission ring 122. The inner power transmission ring 121 includes an inner power transmission magnetic ring and a first coil, which is wound around the inner power transmission magnetic ring. The outer power transmission ring 122 includes an outer power transmission magnetic ring and a second coil, which is wound around the outer power transmission magnetic ring. The signal transmission component 13 includes an inner signal ring 131 and an outer signal ring 132. The inner signal ring 131 includes an inner signal magnetic ring and a third coil, which is wound around the inner signal magnetic ring. The outer signal ring 132 includes an outer signal magnetic ring and a fourth coil, which is wound around the inner signal magnetic ring. The inner power transmission magnetic ring, outer power transmission magnetic ring, and inner signal magnetic ring all have the same function and similar structure. For example, the inner power transmission magnetic ring is a ring-shaped structure made of a magnetic conductor. It serves as an anti-interference element, suppressing high-frequency noise and supporting the first coil.

[0081] Both the power transmission assembly 12 and the signal transmission assembly 13 further include leads, including a first power transmission lead 123 connected to the first coil, a second power transmission lead 124 connected to the second coil, a first signal lead 133 connected to the third coil, and a second signal lead 134 connected to the fourth coil. The first power transmission lead 123 and the first signal lead 133 extend upward. The first power transmission lead 123 extends from the first extension opening 57 on the top surface of the rotor 5 and is connected to the environmental detection device 3. The first signal lead 133 extends from the second extension opening 56 on the top surface of the rotor 5 and is connected to the environmental detection device 3. In a feasible embodiment, the first power transmission lead 123 and the first signal lead 133 are connected to the wiring terminals set on the top surface of the rotor 5, and the environmental detection device 3 is connected to the mating terminals that are plugged into and matched with the wiring terminals. By plugging and matching the wiring terminals and the mating terminals, the first power transmission lead 123 and the first signal lead 133 can be connected to the environmental detection device 3, and the wiring terminals and the mating terminals can be repeatedly disassembled and used. Such a design makes it more convenient for the docking installation of the environmental detection device 3 and the motor 4, and helps to disassemble, replace and maintain the environmental detection device 3 relative to the motor 4.

[0082] Please refer to Figure 15The second power transmission lead 124 and the second signal lead 134 extend downward and extend from the bottom of the base 6. The second power transmission lead 124 is connected to the power supply in the control host to receive the power provided by the power supply for operating the environment scanning device; the second signal lead 134 is connected to the control device in the control host to receive the control signal sent by the control device for controlling the environment scanning device.

[0083] Figure 16 for Figure 14 For bottom view of the motor, please refer to Figure 16 In one possible embodiment, two notches are defined at the edge of the base plate 62: a motor lead opening 624 and a third opening 625. The motor lead opening 624 corresponds to the position of the motor lead 10, allowing it to extend. The third opening 625 is for the second signal lead 134, which extends from the bottom of the base 6 and connects to the control device. A fourth opening 612 is defined on the annular sidewall 61, facing outward from the base plate 62. The second power lead 124 extends from the fourth opening 612 and the edge of the base plate 62 to the bottom of the base 6. After extending, the second power lead 124 connects to an external power source. In one possible embodiment, the second power transmission lead 124 and the second signal lead 134 can also be connected to the wiring terminals provided at the bottom of the base 6, and the power supply and control device can be connected to cables with mating terminals. By plugging and matching the wiring terminals and the mating terminals, the second power transmission lead 124 can be connected to the power supply, and the second signal lead 134 can be connected to the control device. In addition, the wiring terminals and the mating terminals can be repeatedly disassembled and used. Such a design makes it more convenient to connect the motor 4 with the power supply and control device, and is conducive to disassembly, replacement and maintenance.

[0084] Please refer to Figure 16 The edge of the bottom plate 62 is provided with a plurality of outwardly protruding assembly legs 623 for installing and fixing the motor 4. The assembly legs 623 are provided with connection holes that cooperate with threaded fasteners. The bottom plate 62 is fixed to the vehicle body by threaded fasteners passing through the connection holes.

[0085] Figure 17 for Figure 14 Cross-sectional view of the middle base, Figure 18 for Figure 14 The cross-sectional view of the motor is as follows: Figure 17 and Figure 18 As shown, the surface of the base plate 62 facing the rotor 5 is provided with a fourth mounting groove 622 arranged around the first axis. The fourth mounting groove 622 is an annular groove opening toward the rotor 5 and surrounding the first axis. The cross-section of the fourth mounting groove 622 can be a rectangle with the plane passing through the first axis as the cross-section.

[0086] A second mounting groove 611 is provided on the inner surface of the annular sidewall 61. The second mounting groove 611 is located near the top of the annular sidewall 61. The second mounting groove 611 may be an annular groove extending along the inner surface of the annular sidewall 61 around the first axis. In one possible embodiment, the upper side of the second mounting groove 611 extends through the top of the annular sidewall 61. The cross-section of the second mounting groove 611, taken along a plane passing through the first axis, is L-shaped.

[0087] Please refer to Figure 18 A first mounting groove 52 is provided on the outer circumferential surface 53 of the rotor 5 at a position opposite the second mounting groove 611. The first mounting groove 52 may be an annular groove surrounding the first axis, with the centerline of the annular groove coinciding with the first axis. The opening of the first mounting groove 52 is horizontal and faces away from the first axis. The first mounting groove 52 and the second mounting groove 611 are coaxially arranged.

[0088] A third mounting groove 55 is provided at a position opposite to the fourth mounting groove 622 on the bottom end surface 54 of the rotor 5. The third mounting groove 55 can be an annular groove surrounding the first axis, and the opening of the annular groove faces the fourth mounting groove 622. The third mounting groove 55 is coaxial with the fourth mounting groove 622, and the third mounting groove 55 is located directly above the fourth mounting groove 622.

[0089] The power transmission inner ring 121 is installed in the first mounting slot 52, with the power transmission inner magnetic ring attached to the bottom surface of the first mounting slot 52. The power transmission outer ring is installed in the second mounting slot 611, with the power transmission outer magnetic ring attached to the vertical wall of the second mounting slot 611. A magnetic shield 9 is provided between the power transmission inner ring 121 and the first mounting slot 52 to prevent the magnetic field generated by the motor 4 during operation from interfering with the power transmission assembly 12. The magnetic shield 9 is an annular structure attached to the bottom surface of the first mounting slot 52, and may, for example, consist of two semicircular magnetic shielding tiles connected or spliced ​​together. As can be seen from the above description, the central axes of the power transmission outer ring 122 and the power transmission inner ring 121 both coincide with the first axis, and the power transmission outer ring 122 is sleeved onto the outer side of the power transmission inner ring 121.

[0090] The power transmission principle of the power transmission assembly 12 is based on electromagnetic induction. The first and second coils wirelessly transmit electrical energy using a coupled electromagnetic field as a medium. In one possible implementation, the inner and outer magnetic rings can be omitted from the power transmission assembly 12, leaving only the first and second coils. This design reduces the weight and number of components of the power transmission assembly 12, further reducing the cost of the motor 4 using this assembly while also increasing the integration level of the motor 4 using this assembly.

[0091] The inner signal ring 131 is mounted in the third mounting slot 55. The inner signal magnetic ring is an annular structure that fits against the bottom surface of the third mounting slot 55. The outer signal ring 132 is mounted in the fourth mounting slot 622. The outer signal magnetic ring is an annular structure that fits against the bottom surface of the fourth mounting slot 622. As can be seen from the above description, the central axes of the inner signal ring 131 and the outer signal ring 132 coincide with the first axis, with the inner signal ring 131 positioned above the outer signal ring 132.

[0092] The operating principle of motor 4 is as follows: rotor 5 rotates around a first axis on stator 11, thereby driving the environment detection device 3 to rotate. The supply current from an external power source enters the outer power transmission ring 122 via the second power transmission lead 124. The operating signal of the control device enters the outer signal ring 132 via the second signal lead 134. The signal is wirelessly transmitted to the inner power transmission ring 121 and the inner signal ring 131 through magnetic coupling between the coils of the outer power transmission ring 122 and the inner power transmission ring 121, and between the coils of the inner signal ring 131 and the outer signal ring 132. The inner power transmission ring 121 then transmits the operating current to the environment detection device 3 installed on motor 4 via the first power transmission lead 123. The inner signal ring 131 then transmits the control signal to the environment detection device 3 installed on motor 4 via the first signal lead 133.

[0093] According to the above description, the motor 4 in this embodiment fixes the power transmission inner ring 121 and the signal inner ring 131 directly to the rotor 5, and fixes the power transmission outer ring 122 and the signal outer ring 132 to the base 6 coaxial with the stator 11. Compared with the related art, such a design reduces the adapters, fixed shafts and rotating bodies, making the structure of the motor 4 simpler, which is conducive to the miniaturization of the motor 4 and further helps to reduce the overall volume of the photoelectric scanning device; in addition, the simple motor structure reduces the number of assemblies during the motor assembly process, thereby reducing the cumulative tolerance caused by multiple transfers and reducing the probability of magnetic coupling failure between the coupling coils in the wireless transmission component.

[0094] Furthermore, the post-assembly tolerance between stator 11 and rotor 5 is significantly smaller than the maximum allowable coupling tolerance between first coil 81 and second coil 82 in wireless transmission assembly 8. Therefore, generally, maintaining the tolerance between base 6 and stator 11 will meet design requirements. It is understandable that the coaxiality tolerance between base 6 and stator 11 is easier to achieve than the coaxiality tolerance between fixed shaft 300 and rotating body 200 in the related art, reducing processing difficulty. Furthermore, the wireless transmission assembly is mounted on the assembled stator 11 and rotor 5, and the first and second leads in the wireless transmission assembly can be extended without having to pass through multiple fixed shafts, making processing relatively simple. Furthermore, power transmission and signal transmission are accomplished using separate components, resulting in higher transmission efficiency and improved reliability.

[0095] As can be seen from the above description, the power transmission assembly 12 is located on the outer circumferential surface 53 and annular sidewall 61 of the rotor 5, while the signal transmission assembly 13 is located on the bottom end surface 54 and bottom plate 62 of the rotor 5. The power transmission assembly 12 and the signal transmission assembly 13 are located on different planes and are relatively far apart, thereby preventing interference between the power transmission assembly 12 and the signal transmission assembly 13. Obviously, the positions of the power transmission assembly 12 and the signal transmission assembly 13 can be reversed.

[0096] In one possible implementation, the power transmission inner ring 121 and the signal inner ring 141 are both sleeved onto the outer circumferential surface 53 of the rotor 5. Correspondingly, the power transmission outer ring 122 and the signal outer ring 132 are both mounted on the inner side surface of the annular sidewall 61. For example, the outer circumferential surface 53 of the rotor 5 is provided with a first mounting groove 52 and a third mounting groove 55. The first mounting groove 52 and the third mounting groove 55 can be annular grooves circumferentially surrounding the first axis. The openings of the first mounting groove 52 and the third mounting groove 55 are both horizontal and facing away from the first axis. The annular sidewall 61 is provided with a second mounting groove 611 at a position corresponding to the first mounting groove 52, and a fourth mounting groove 622 at a position corresponding to the third mounting groove 55.

[0097] Alternatively, the power transmission inner ring 121 and the signal inner ring 131 can both be mounted on the bottom end surface 54 of the rotor 5. Correspondingly, the power transmission outer ring 122 and the signal outer ring 132 can both be mounted on the bottom plate 62 of the base 6. For example, the bottom end surface 54 of the rotor 5 is provided with a first mounting groove 52 and a third mounting groove 55. The first and third mounting grooves 52, 55 can be annular grooves circumferentially surrounding the first axis, with a rectangular cross-section taken along a plane passing through the first axis. Both the first and third mounting grooves 52, 55 open vertically toward the bottom plate 62. A second mounting groove 611 is defined on the bottom plate 62 at a position corresponding to the first mounting groove 52, and a fourth mounting groove 622 is defined on the bottom plate 62 at a position corresponding to the third mounting groove 55.

[0098] It should be noted that the photoelectric scanning device 2 provided in this embodiment is not limited to the field of autonomous driving vehicle technology, but can also be applied to fields such as urban monitoring.

[0099] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A photoelectric scanning device, characterized in that: The invention comprises a motor, a wireless transmission component and an environment detection device, wherein the motor comprises a stator, a rotor and a base, wherein the stator is fixedly mounted on the base and the rotor is sleeved on the stator; the wireless transmission component comprises a first coil and a second coil, wherein the first coil and the environment detection device are respectively mounted on the rotor and electrically connected to the environment detection device, and the second coil is mounted on the base; the second coil is electrically connected to a control host; the first coil and the second coil are magnetically coupled to realize wireless signal and / or power transmission between the control host and the environment detection device; The base includes a bottom plate and an annular side wall provided on the bottom plate, the annular side wall is coaxial with the stator, and the stator and the rotor are located in a side wall space surrounded by the annular side wall; The first coil is mounted on the outer circumferential surface of the rotor, and the second coil is mounted on the inner wall surface of the annular side wall, and the second coil is coaxially sleeved outside the first coil; or, the first coil and the second coil are located in the side wall space, and the first coil is mounted on the bottom end surface of the rotor facing the bottom plate, and the second coil is mounted on the bottom plate located in the side wall space; The wireless transmission component further includes a third coil and a fourth coil, wherein the third coil is mounted on the rotor and the fourth coil is mounted on the base; the control host and the environment detection device realize wireless power transmission through magnetic coupling between the first coil and the second coil; the control host and the environment detection device realize wireless signal transmission through magnetic coupling between the third coil and the fourth coil; A magnetic isolation member is provided between the first coil and the rotor; the wireless transmission component further comprises a signal inner magnetic ring and a signal outer magnetic ring, the third coil is wound around the signal inner magnetic ring, and the fourth coil is wound around the signal outer magnetic ring.

2. The photoelectric scanning device according to claim 1, wherein: The outer circumferential surface of the rotor is provided with a first mounting groove, and the first coil is installed in the first mounting groove, and / or the inner wall surface of the annular side wall is provided with a second mounting groove, and the second coil is installed in the second mounting groove.

3. The photoelectric scanning device according to claim 1, wherein: The bottom end surface of the rotor is provided with a third mounting groove, and the first coil is installed in the third mounting groove, and / or the side of the bottom plate facing the rotor is provided with a fourth mounting groove, and the second coil is installed in the fourth mounting groove.

4. The photoelectric scanning device according to any one of claims 1 to 3, characterized in that: The first coil is arranged on the outer circumference of the rotor, the second coil is arranged on the base and coaxially sleeved on the outside of the first coil; the third coil is arranged on the bottom end surface of the rotor facing the base, and the fourth coil is installed on the base.

5. The photoelectric scanning device according to any one of claims 1 to 3, characterized in that: The first coil and the third coil are both arranged on the outer circumference of the rotor; the second coil is arranged on the base and coaxially sleeved outside the first coil, and the fourth coil is arranged on the base and coaxially sleeved outside the third coil.

6. The photoelectric scanning device according to any one of claims 1 to 3, characterized in that: The first coil and the third coil are both arranged on the bottom end surface of the rotor facing the base, and the second coil and the fourth coil are installed on the base.

7. The photoelectric scanning device according to claim 1, wherein: One end of the rotor is provided with a connection interface for installing an environment detection device. The connection interface includes two mounting blocks symmetrically arranged relative to the axis of the rotor. The mounting blocks are provided with mounting holes.

8. The photoelectric scanning device according to claim 1, wherein: The environment detection device includes a laser radar, an infrared radar, a millimeter wave radar or a camera.

9. A motor for driving an environment detection device, characterized in that: The motor includes a stator, a rotor, a base and a wireless transmission component; the stator is fixedly mounted on the base, the rotor is sleeved on the stator, and the wireless transmission component includes a first coil and a second coil, the first coil is mounted on the rotor, and the second coil is mounted on the base; the environment detection device is mounted on the rotor and electrically connected to the first coil; the second coil is electrically connected to a control host that controls the environment detection device; wireless signal and / or power transmission is achieved between the control host and the environment detection device through magnetic coupling between the first coil and the second coil; The base includes a bottom plate and an annular side wall provided on the bottom plate, the annular side wall is coaxial with the stator, and the stator and the rotor are located in a side wall space surrounded by the annular side wall; The first coil is mounted on the outer circumferential surface of the rotor, and the second coil is mounted on the inner wall surface of the annular side wall, and the second coil is coaxially sleeved outside the first coil; or, the first coil and the second coil are located in the side wall space, and the first coil is mounted on the bottom end surface of the rotor facing the bottom plate, and the second coil is mounted on the bottom plate located in the side wall space; The wireless transmission component further includes a third coil and a fourth coil, wherein the third coil is mounted on the rotor and the fourth coil is mounted on the base; the control host and the environment detection device realize wireless power transmission through magnetic coupling between the first coil and the second coil; the control host and the environment detection device realize wireless signal transmission through magnetic coupling between the third coil and the fourth coil; A magnetic isolation member is provided between the first coil and the rotor; the wireless transmission component further comprises a signal inner magnetic ring and a signal outer magnetic ring, the third coil is wound around the signal inner magnetic ring, and the fourth coil is wound around the signal outer magnetic ring.

10. An autonomous driving vehicle, characterized in that: It comprises a vehicle body, and the photoelectric scanning device according to any one of claims 1 to 8, or the motor according to claim 9, which is mounted on the vehicle body.

Images