A motor and a laser radar lens structure with automatic scanning function

Abstract

The present invention provides a motor and a laser radar lens structure with an automatic scanning function that has a simple structure, a reasonable layout, and fully utilizes space. The motor of the present invention comprises a substrate (1), a stator (3) with a winding (2) is fixed on the substrate, a rotor (4) is coaxially arranged inside the stator, the interior of the rotor is a through hole, the through hole is provided for a telescope module to pass through, a rotating plate (5) is fixedly arranged on the upper end of the rotor, and a gap is left between the rotating plate and the stator; the laser radar lens structure with an automatic scanning function also comprises a telescope module (8), a wedge mirror (9) is arranged above the telescope module, the telescope module is fixedly arranged on the substrate and passes through the through hole inside the rotor, the telescope module and the inside of the rotor are in a non-contact state, a connecting tube (10) is fixedly arranged on the rotating plate, and the wedge mirror is fixedly arranged on the upper part of the connecting tube (10). The present invention is applied to the field of laser radar technology.

Description

Technical Field

[0001] The present invention relates to the field of laser radar technology, and in particular to a motor and a laser radar lens structure with an automatic scanning function. Background Art

[0002] Laser wind radar is a new type of atmospheric remote sensing equipment. It scans the wind field through laser wind radar and then detects the wind field data. At present, large-scale laser wind radar is widely used in airports and military fields. However, some areas cannot deploy large-scale radar equipment, which makes it impossible to calculate the wind field data in the area. For this reason, it is necessary to develop radar equipment with a small size, easy to carry and use. For this reason, the structure of the radar equipment needs to be redesigned. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a motor and a laser radar lens structure with an automatic scanning function that has a simple structure, a reasonable layout, and fully utilizes space.

[0004] The technical solution adopted by a motor described in the present invention is a motor, comprising a substrate, a stator with a winding is fixed on the substrate, a rotor is coaxially arranged inside the stator, the interior of the rotor is a through hole, and the through hole is provided for a telescope module to pass through, a rotating plate is fixedly arranged on the upper end of the rotor, a gap is left between the rotating plate and the stator, a control board is also arranged on the lower side of the substrate, a power supply interface is arranged on the substrate, the power supply interface supplies power to the winding, and an encoder is arranged on the stator, and the encoder is electrically connected to the control board.

[0005] It can be seen from the above scheme that a motor composed of a stator and a rotor is arranged on a substrate, with the rotor located inside and the stator located outside, the inside of the rotor is arranged with a through hole for the telescope module to pass through, and a rotating plate is arranged at the upper end of the rotor. The rotor drives the rotating plate to rotate, thereby further driving the devices located on the rotating plate, such as a wedge mirror, to rotate, thereby realizing the automatic rotation scanning function of the laser radar lens. The structure is simple, the layout is reasonable, and the space inside the motor is fully utilized, providing support for the miniaturization of the equipment.

[0006] Furthermore, a plurality of annular protrusions are provided on the upper end surface of the stator, and a plurality of annular grooves matching the annular protrusions are provided on the lower surface of the rotating plate. The annular protrusions cooperate with the annular grooves to form a dislocated closed structure. The lower surface of the rotating plate, the annular grooves and the surfaces of the annular protrusions are coated with an electromagnetic radiation protection coating, and a clearance hole is provided on the substrate. It can be seen that due to the cooperation of the plurality of annular protrusions and the annular grooves, the electromagnetic radiation inside the motor can be shielded from spreading outwards, and the anti-radiation coating is applied at the same time, which further enhances the electromagnetic radiation protection performance, avoids the magnetic field inside the motor from interfering with the laser radar data, and improves the accuracy of the laser radar.

[0007] The laser radar lens structure with automatic scanning function including the above-mentioned motor also includes a telescope module, a wedge-shaped mirror is arranged above the telescope module, the telescope module is fixedly arranged on the substrate and passes through the through hole inside the rotor, the telescope module and the inside of the rotor are in a non-contact state, a connecting tube is fixedly arranged on the rotating plate, the telescope module is located in the connecting tube, the wedge-shaped mirror is fixedly arranged on the upper part of the connecting tube, and a signal interface is also arranged on the substrate, and the control board provides a driving signal to the motor through the signal interface.

[0008] It can be seen from the above scheme that the rotating plate is connected to the wedge mirror through the connecting tube to form a synchronous rotating structure, and the telescope module is fixed on the base plate. The wedge mirror deflects the light emitted from the telescope module lens, and then the wedge mirror is driven to rotate by a motor to realize the scanning of the wind field by light. This structure is simple and reliable, maximizes the use of space, and realizes the miniaturization design of the radar lens.

[0009] A focusing device is arranged at the lower side of the substrate, and the focusing device includes a driving motor, a reversing shaft and a focusing gear matched with the lower part of the telescope module. The driving motor is connected to the control board by electrical signals, and the reversing shaft is rotatably matched with the bracket located at the lower part of the substrate. A first driving wheel is arranged on the output shaft of the driving motor, and a first driven wheel meshing with the first driving wheel is arranged on the reversing shaft. A second driving wheel meshing with the focusing gear is also arranged on the reversing shaft. When the focusing gear rotates, it drives the fiber coupling lens located below the telescope module to move on the optical axis, adjusts the distance between the fiber coupling lens and the lens group in the telescope module, and realizes the focusing of the telescope. It can be seen that through the arrangement of the focusing device, the automatic focusing of the telescope can be realized, which provides guarantee for the full automatic operation of the whole equipment.

[0010] The focusing device also includes a travel limit device arranged at the lower side of the substrate, and the travel limit device includes a fixed frame fixedly arranged at the lower side of the substrate, and photoelectric detection probes are arranged at the upper and lower parts of the fixed frame, and the photoelectric detection probes are connected to the control board signal. It can be seen that by setting the travel limit device, the travel of the focusing gear moving up and down in a straight line at the telescope module can be detected by using the two photoelectric detection probes located on the fixed frame. When the focusing gear moves to the detection position on the telescope module, the driving motor stops working to avoid causing a collision, thereby ensuring the safe operation of the focusing device.

[0011] A positioning pin hole is provided on the connecting tube at a position matching with the wedge-shaped mirror, and a notch is provided on the outer edge of the wedge-shaped mirror. When the positioning pin is fitted in the positioning pin hole, the positioning pin is clamped at the notch. It can be seen that the matching arrangement of the positioning pin hole and the notch can ensure rapid positioning and installation quality when installing the wedge-shaped mirror, greatly improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a simplified structural diagram of the laser radar lens structure with automatic scanning function from the first perspective;

[0013] Figure 2 is a schematic diagram of an exploded structure of the laser radar lens structure with automatic scanning function;

[0014] Figure 3 is a schematic cross-sectional structural diagram of the laser radar lens structure with automatic scanning function;

[0015] Figure 4 is a schematic diagram of a top view of the laser radar lens structure with an automatic scanning function;

[0016] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure of part A;

[0017] Figure 6 is a simplified structural schematic diagram of the motor from a first viewing angle;

[0018] Figure 7 is a simplified structural schematic diagram of the motor from a second viewing angle;

[0019] Figure 8 is a schematic cross-sectional structural diagram of the motor;

[0020] Fig. 9 It is a simplified schematic diagram of the signal light path in the present invention. DETAILED DESCRIPTION

[0021] like Figure 6 to Figure 9As shown, a motor 01 includes a substrate 1, a stator 3 with a winding 2 is fixed on the substrate 1, a rotor 4 is coaxially arranged in the stator 3, the interior of the rotor 4 is a through hole, and the through hole is provided for the telescope module to pass through, a rotating plate 5 is fixedly arranged on the upper end of the rotor 4, a gap is left between the rotating plate 5 and the stator 3, a control board 35 is also arranged on the lower side of the substrate 1, a power interface 6 is arranged on the substrate 1, and the power interface 6 supplies power to the winding 2, an encoder 21 is arranged on the stator 3, and the encoder 21 is electrically connected to the control board 35, and the encoder 21 counts the number of rotations of the rotor. According to the radar operation requirements, when the set number of rotations of the rotor is reached, the encoder feeds back to the control board 35. A plurality of annular protrusions 7 are arranged on the upper end surface of the stator 3, and a plurality of annular grooves 24 matched with the annular protrusions 7 are arranged on the lower surface of the rotating plate 5. The annular protrusions 7 and the annular grooves 24 cooperate to form a staggered closed structure. The lower surface of the rotating plate 5, the annular grooves 24 and the surfaces of the annular protrusions 7 are all coated with an electromagnetic radiation protection coating, and a clearance hole 22 is arranged on the substrate 1.

[0022] like Figure 1 to Figure 5 As shown, a laser radar lens structure with an automatic scanning function including the above-mentioned motor, the laser radar lens structure with an automatic scanning function also includes a telescope module 8, a wedge mirror 9 is arranged above the telescope module 8, the telescope module 8 is fixedly arranged on the substrate 1 and passes through the through hole inside the rotor 4, the telescope module 8 and the inside of the rotor 4 are in a non-contact state, a connecting tube 10 is fixedly arranged on the rotating plate 5, the telescope module 8 is located in the connecting tube 10, the wedge mirror 9 is fixedly arranged on the upper part of the connecting tube 10, and a signal interface 11 is also arranged on the substrate 1, and the control board 35 provides a driving signal to the motor 01 through the signal interface 11.

[0023] A focusing device is provided at the lower side of the substrate 1, and the focusing device includes a driving motor 12, a reversing shaft 13, and a focusing gear 14 matched with the lower part of the telescope module 8. The driving motor 12 is electrically connected to the control board 35, and the reversing shaft 13 is rotatably matched with a bracket 15 located at the lower part of the substrate 1. A first driving wheel 16 is provided on the output shaft of the driving motor 12, and a first driven wheel 17 meshing with the first driving wheel 16 is provided on the reversing shaft 13. A second driving wheel 18 meshing with the focusing gear 14 is also provided on the reversing shaft 13. When the focusing gear 14 rotates, it drives the optical fiber coupling lens 28 located below the telescope module 8 to move on the optical axis, adjusts the distance between the optical fiber coupling lens 28 and the lens group in the telescope module 8, and realizes the focusing of the telescope. Here, the focusing gear 14 is arranged on the periphery of the sleeve 33 extending downwardly of the telescope module. A sliding sleeve 36 is also sleeved outside the sleeve 33. The focusing gear 14 is fixed on the periphery of the sliding sleeve 36. The sliding sleeve 36 is connected to a lens barrel portion 37 on which the optical fiber coupling lens 28 is arranged. An external thread is arranged on the outer periphery of the lower portion of the lens barrel portion 37. An internal thread is arranged on the inner wall of the sleeve 33. The external thread cooperates with the internal thread. Figure 3 The B part is a threaded mating part. The focusing gear 14, the sliding sleeve 36, the lens barrel part 37 and the optical fiber coupling lens 28 are fixed as a whole. When rotating, since the sleeve 33 extending downward of the telescope module is threadedly mated with the lens barrel part 37, when the focusing gear 14 rotates, the focusing gear 14, the sliding sleeve 36, the lens barrel part 37 and the optical fiber coupling lens 28 will integrally follow the thread to perform fine adjustments in the up and down directions. The second driving wheel 18 and the focusing gear 14 are externally meshed gears, so the focusing gear 14 can achieve fine adjustments up and down along the thread lines while rotating, thereby achieving the focusing of the telescope module.

[0024] A top tube 38 is also provided in the sleeve 33. The top tube 38 is fitted on the inner wall of the sleeve 33 in a lubricated manner. A limit pin hole 39 is provided on the wall surface of the sleeve 33 in the same direction as the axis direction. A limit pin 40 is provided on the outer wall surface of the top tube 38. The limit pin 40 passes through the limit pin hole 39 and is exposed on the surface of the sleeve 33. The cooperation between the limit pin hole 39 and the limit pin 40 ensures that the relative movement between the sleeve 33 and the top tube 38 only occurs on the axis. The internal thread originally provided on the inner wall of the sleeve 33 is provided on the inner wall surface of the top tube 38. A spring 34 is provided between the top tube 38 and the inner top of the sleeve 33. The spring is always in a compressed state, and the lower end surface of the top tube 38 presses the optical fiber fixing part 32 to eliminate the matching clearance between the optical fiber fixing part 32 and the sleeve 33, thereby ensuring the accuracy of the radar.

[0025] The telescope module 8 is connected to the optical fiber signal line 27 at the lower part, and the optical fiber signal line 27 is connected to the optical fiber module and then passes through the optical fiber coupling lens 28. The optical fiber signal is emitted from the optical fiber coupling lens 28, and the optical signal enters the telescope main body 30 after unnecessary signals are filtered out by the optical filter 29. After the optical signal emitted from the telescope main body 30 passes through the optical lens 31, the optical signal is emitted in parallel to the wedge-shaped mirror 9. Under the action of the wedge-shaped mirror 9, the optical signal is deflected, and the motor 01 drives the connecting tube 10 to rotate, and the connecting tube 10 drives the wedge-shaped mirror 9 to rotate, thereby realizing the circular scanning of the wind field by the optical signal.

[0026] The focusing device also includes a travel limit device arranged on the lower side of the substrate 1, and the travel limit device includes a fixing frame 25 fixedly arranged on the lower side of the substrate 1, and photoelectric detection probes 26 are arranged on the upper and lower parts of the fixing frame 25, and the photoelectric detection probes 26 are connected to the control board 35 by signal.

[0027] A positioning pin hole 19 is provided on the connecting tube 10 at a position matching with the wedge-shaped mirror 9 , and a notch 20 is provided on the outer edge of the wedge-shaped mirror 9 . When a positioning pin 23 is fitted in the positioning pin hole 19 , the positioning pin is clamped in the notch 20 .

[0028] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor, characterized in that: The motor comprises a substrate (1), a stator (3) with a winding (2) is fixed on the substrate (1), a rotor (4) is coaxially arranged inside the stator (3), the interior of the rotor (4) is a through hole, the through hole is provided for a telescope module to pass through, a rotating plate (5) is fixedly arranged on the upper end of the rotor (4), a gap is left between the rotating plate (5) and the stator (3), a control board (35) is also arranged on the lower side of the substrate (1), a power interface (6) is arranged on the substrate (1), the power interface (6) supplies power to the winding (2), and a control board (35) is arranged on the stator (3). An encoder (21) is arranged, and the encoder (21) is electrically connected to the control board (35); a plurality of annular protrusions (7) are arranged on the upper end surface of the stator (3); a plurality of annular grooves (24) matching the annular protrusions (7) are arranged on the lower surface of the rotating plate (5); the annular protrusions (7) and the annular grooves (24) are matched to form a dislocated closed structure; the lower surface of the rotating plate (5), the annular grooves (24) and the annular protrusions (7) are coated with an electromagnetic radiation protection coating; and a clearance hole (22) is arranged on the substrate (1). A focusing device is arranged on the lower side of the substrate (1), the focusing device comprising a driving motor (12), a reversing shaft (13) and a focusing gear (14) engaged with the lower part of the telescope module (8), the driving motor (12) being connected to the control board (35) by electrical signals, the reversing shaft (13) being rotatably engaged with a bracket (15) located at the lower part of the substrate (1), a first driving wheel (16) being arranged on the output shaft of the driving motor (12), a first driven wheel (17) meshing with the first driving wheel (16) being arranged on the reversing shaft (13), and a first driven wheel (17) meshing with the first driving wheel (16) being arranged on the reversing shaft (13). A second driving wheel (18) meshing with the focusing gear (14) is also provided on the shaft (13); the focusing gear (14) is arranged on the periphery of a sleeve (33) extending downwardly of the telescope module; a sliding sleeve (36) is also sleeved outside the sleeve (33); the focusing gear (14) is fixed on the periphery of the sliding sleeve (36); the sliding sleeve (36) is connected to a lens barrel portion (37) on which a fiber coupling lens (28) is provided; an external thread is provided on the outer periphery of the lower portion of the lens barrel portion (37); an internal thread is provided on the inner wall of the sleeve (33); the external thread matches the internal thread.

2. A laser radar lens structure with automatic scanning function comprising a motor as claimed in claim 1, characterized in that: The laser radar lens structure with automatic scanning function also includes a telescope module (8), a wedge mirror (9) is arranged above the telescope module (8), the telescope module (8) is fixedly arranged on the substrate (1) and passes through the through hole inside the rotor (4), the telescope module (8) and the inside of the rotor (4) are in a non-contact state, a connecting tube (10) is fixedly arranged on the rotating plate (5), the telescope module (8) is located in the connecting tube (10), the wedge mirror (9) is fixedly arranged on the upper part of the connecting tube (10), and a signal interface (11) is also arranged on the substrate (1), and the control board (35) provides a driving signal to the motor through the signal interface (11).

3. The laser radar lens structure with automatic scanning function according to claim 2, characterized in that: When the focusing gear (14) rotates, it drives the optical fiber coupling lens (28) located below the telescope module (8) to move on the optical axis, thereby adjusting the distance between the optical fiber coupling lens (28) and the lens group in the telescope module (8), and achieving the focusing of the telescope.

4. The laser radar lens structure with automatic scanning function according to claim 3 is characterized in that: The focusing device further comprises a travel limit device arranged on the lower side of the substrate (1), the travel limit device comprising a fixing frame (25) fixedly arranged on the lower side of the substrate (1), photoelectric detection probes (26) being arranged on the upper and lower parts of the fixing frame (25), and the photoelectric detection probes (26) being connected to the control board (35) by signal.

5. The laser radar lens structure with automatic scanning function according to claim 2, characterized in that: A positioning pin hole (19) is provided on the connecting tube (10) at a position matching with the wedge-shaped mirror (9), and a notch (20) is provided on the outer edge of the wedge-shaped mirror (9). When a positioning pin is fitted into the positioning pin hole (19), the positioning pin is clamped tightly at the notch (20).

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