CN216083085U

CN216083085U - Suspended rotary optical scanning sensor

Info

Publication number: CN216083085U
Application number: CN202122454559.XU
Authority: CN
Inventors: 石国杰; 史长余
Original assignee: Yueyang Hagong Feismier Photoelectric Technology Co ltd
Current assignee: Yueyang Hagong Feismier Photoelectric Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-03-18
Anticipated expiration: 2031-10-12

Abstract

The utility model discloses a suspension rotary optical scanning sensor, comprising: a base; the optical protective cover is arranged on the base, and a cavity is formed in the optical protective cover; the motor is arranged at the top of the optical protective cover, and the rotating end of the motor is positioned in the cavity and faces downwards; a mirror assembly comprising: the rotating body is arranged at the rotating end of the motor, and the reflecting mirror is arranged at the lower end of the rotating body and forms an angle of 45 degrees with the rotating shaft; the power receiving coil circuit module is arranged at the lower end of the rotating body; the optical path of the optical transceiving component is coaxial with the rotation axis and faces the reflector; the base is provided with a power supply coil circuit module which supplies power to the power receiving coil circuit module in an induction mode. According to the suspended rotary type optical scanning sensor provided by the utility model, the suspended rotary type reflector component is supplied with power in a non-contact manner, so that the reflector component can perform high-speed and high-frequency scanning operation within the range of 360 degrees.

Description

Suspended rotary optical scanning sensor

Technical Field

The utility model relates to the technical field of optical scanning sensors, in particular to a suspended rotary type optical scanning sensor.

Background

Optical scanning sensors, also known as ranging lidar, require distance measurements of objects on a section of space of the environment of use at a certain scanning frequency (e.g. 50 Hz), a basic measurement method being "time-of-flight measurement". The method is characterized in that a laser radar emits laser pulses in a specific space angle, simultaneously detects the laser pulses reflected by the surface of a measured target in the space angle, calculates the flight time from the emission of the laser pulses to the reflection of the laser pulses, and obtains a distance value through time and distance conversion.

The existing pulse type distance measurement scanning laser radar is provided with an active distance measurement device on a rotating mechanism, the distance measurement device comprises an optical transceiving component consisting of a laser emitting part and a laser receiving part, and power supply and signal transmission are realized between the distance measurement device and a non-rotating part of the laser radar through a metal friction type conductive slip ring. The optical axis of the laser beam emitted by the distance measuring device forms a layer of scanning surface, so that the environment to be measured can be scanned. The ranging type laser radar has the following problems: 1) the rotating load has larger mass, lower rotating speed and scanning frequency and higher power consumption; 2) the metal friction type conductive slip ring has low reliability and limited service life; the reflective system type scanning laser radar with high rotating speed and high scanning frequency limits the scanning angle and cannot realize 360-degree omnidirectional scanning, so that a novel design structure form is provided.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a suspended rotary optical scanning sensor, which uses a suspended rotary mirror assembly and uses a wireless power supply coil to supply power to a rotary motor of the suspended rotary optical scanning sensor in a non-contact manner, so that the mirror assembly can perform scanning operation at high speed and high frequency within 360 °.

To achieve the above object, the present invention provides a suspended rotary type optical scanning sensor comprising:

a base;

the optical protective cover is arranged on the base, and a cavity is formed in the optical protective cover;

the motor is arranged at the top of the optical protective cover, and the rotating end of the motor is positioned in the cavity and faces downwards;

a mirror assembly, comprising: the rotating body is arranged at the rotating end of the motor, and the reflector is arranged at the lower end of the rotating body and forms an angle of approximately 45 degrees with the rotating shaft; the power receiving coil circuit module is arranged at the lower end of the rotating body; and

an optical transceiver module mounted on the base, an optical path of the optical transceiver module being substantially coaxial with the rotation axis and directed toward the mirror; the base is further provided with a power supply coil circuit module, and the power supply coil circuit module is close to the power receiving coil circuit module to form a non-contact induction power supply device.

In some embodiments, the neutral axis of the power receiving coil circuit module is disposed substantially coincident with the rotation axis, and correspondingly, the neutral axis of the power supplying coil circuit module is disposed substantially coincident with the rotation axis.

In some embodiments, further comprising: the photoelectric coding disc is approximately coaxially arranged at the lower end of the rotating body with the rotating shaft, and the photoelectric coding switch is arranged on the base and aligned with the photoelectric coding disc.

In some embodiments, the photoelectric coding disc is integrally mounted on the power supply coil circuit module.

In some embodiments, further comprising: the light path of the first reflector shading cylinder and the light path of the second reflector shading cylinder form an angle of approximately 90 degrees and converge on the reflector; the second reflector shading cylinder is arranged close to the optical transceiving component, and the optical path of the second reflector shading cylinder is approximately coaxial with the rotating shaft.

In some embodiments, the first reflector shade tube and the second reflector shade tube are integrally formed into an L-shaped shade tube.

In some embodiments, the L-shaped shade cylinder is detachably mounted to the lower end of the rotary body.

In some embodiments, the lower end of the rotating body has a first installation plane which is approximately 45 degrees with the rotating shaft, and correspondingly, the light path convergence of the L-shaped shading cylinder has a second installation plane which is approximately 45 degrees with the light path, and the second installation plane presses the reflector on the first installation plane and is fixed through the column hole structure.

In some embodiments, the optical transceiver component includes an integrally mounted laser transmitter and laser receiver.

In some embodiments, an upper cover is further disposed on the base, and the optical protective cover is detachably mounted to the upper cover.

Compared with the prior art, the utility model has the beneficial effects that: according to the suspended rotary type optical scanning sensor, the reflector component is suspended and rotated, and meanwhile, the wireless power supply coil supplies power to the rotating motor in a non-contact mode, so that the reflector component can scan at high rotating speed and high frequency within the range of 360 degrees.

In addition, the rotation speed of the optical scanning sensor during rotary scanning can be adjusted by adjusting the power of wireless power supply, and the optical scanning sensor is more sensitive and accurate.

Drawings

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

FIG. 1 is a schematic top view of an embodiment of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1 according to the present invention;

fig. 3 is a schematic perspective view of fig. 1 according to the present invention.

In the figure: 1. a base; 11. a power receiving coil circuit module; 12. a power supply coil circuit module; 13. a photoelectric coding disc; 14. a photoelectric coding switch; 2. an optical protective cover; 3. a motor; 4. a mirror assembly; 41. a rotating body; 42. a mirror; 401. a first reflector shading cylinder; 402. a second reflector shade tube; 5. an optical transceiver component; 6. and (7) covering.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, fig. 1 is a schematic top view of an embodiment of the present invention; FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1 according to the present invention; fig. 3 is a schematic perspective view of fig. 1 according to the present invention.

The embodiment of the utility model provides a suspended rotary optical scanning sensor, which comprises:

a base 1 for mounting and fixing each element;

an optical protection cover 2 mounted on the base 1, wherein the optical protection cover 2 has a cavity inside, and a transparent layer for transmitting laser is arranged around the optical protection cover 2;

the motor 3 is arranged at the top of the optical protective cover 2, and the rotating end of the motor 3 is positioned in the cavity and faces downwards;

a mirror assembly 4, comprising: a rotating body 41, a reflecting mirror 42 and a power receiving coil circuit module 11, wherein the rotating body 41 is installed at the rotating end of the motor 3, and the reflecting mirror 42 is installed at the lower end of the rotating body 41 and forms an angle of approximately 45 degrees with the rotating shaft; the power receiving coil circuit module 11 is mounted on the lower end of the rotating body 41; and

an optical transceiver module 5 mounted on the base 1, an optical path of the optical transceiver module 5 being substantially coaxial with the rotation axis and directed toward the mirror 42; still be equipped with power supply coil circuit module 12 on the base 1, power supply coil circuit module 12 is close to receiving coil circuit module 11 and forms non-contact induction power supply setting, and wherein, supply, receiving coil are the same with current cell-phone wireless charging principle, and the structure is similar.

The working principle is as follows: the optical transceiver module 5 continuously sends out laser signals, the laser signals change 90 degrees after being emitted to the reflector 42 and then pass through the optical protective cover 2 to be emitted to the scanned object, and the returned signals are returned to the optical transceiver module 5 according to the original path to finish one-time measurement; it should be noted that the motor 3 drives the rotating body 41, the reflecting mirror 42, and the power receiving coil circuit module 11 to rotate an angle for the next scanning measurement, so as to form a scanning plane, wherein the power receiving coil circuit module 11 is continuously supplied with power by the power supply coil circuit module 12 in a non-contact manner, and is finally supplied to the motor 3; it can be understood that, because there is no blocking of the connection circuit between the base 1 and the motor 3, the optical scanning sensor can conveniently scan within the 360-degree range plane without dead angle, and because of the non-contact power supply, the abrasion loss in the past is reduced correspondingly, and the scanning with high rotating speed and high frequency can be carried out.

In order to ensure the stability of wireless power supply during rotation, in this embodiment, optionally, the neutral axis of the power receiving coil circuit module 11 is substantially overlapped with the rotation axis, and correspondingly, the neutral axis of the power supplying coil circuit module 12 is substantially overlapped with the rotation axis.

Further, still include: photoelectric coding disk 13, photoelectric coding switch 14, photoelectric coding disk 13 roughly sets up in the lower extreme of rotator 41 with the rotation axis is coaxial, photoelectric coding switch 14 is installed in base 1 and is aimed at photoelectric coding disk 13 and set up. The photoelectric coded switch 14 is equivalent to an angular velocity sensor, and is used in cooperation with the photoelectric coded disc 13 for testing the rotation speed of the rotating body 41, so that the rotation speed of the motor 3 can be adjusted by adjusting the power of wireless power supply.

Still further, the photoelectric encoding disk 13 is integrally mounted on the power supply coil circuit module 12.

In order to reduce interference during transmission of the laser light path, in this embodiment, optionally, the method further includes: a first reflector shielding cylinder 401 and a second reflector shielding cylinder 402, wherein the optical path of the first reflector shielding cylinder 401 and the optical path of the second reflector shielding cylinder 402 form an angle of approximately 90 ° and meet on the reflector 42, that is, the first reflector shielding cylinder 401 and the second reflector shielding cylinder 402 both form an angle of approximately 45 ° with the reflector 42; the second reflector 402 is disposed near the optical transceiver module 5, and an optical path of the second reflector 402 is substantially coaxial with the rotation axis. Therefore, the laser emitted by the optical transceiver module 5 can be transmitted to the first reflector shade cylinder 401 in the second reflector shade cylinder 402, and the interference in the inner space is reduced.

Further, the first mirror shielding cylinder 401 and the second mirror shielding cylinder 402 are integrally formed into an L-shaped shielding cylinder. By the integral forming processing, the light paths of the first reflector shading cylinder 401 and the second reflector shading cylinder 402 can be guaranteed to be basically vertical, and the consistency is good.

Still further, the L-shaped shade cylinder is detachably mounted to the lower end of the rotating body 41. At this time, the disassembly, assembly, replacement and the like are convenient.

Still further, the lower end of the rotating body 41 has a first mounting plane at an angle of approximately 45 ° with respect to the rotation axis, and correspondingly, the light path converging portion of the L-shaped light shielding cylinder has a second mounting plane at an angle of approximately 45 ° with respect to the light path, and the second mounting plane presses the reflecting mirror 42 against the first mounting plane and is fixed by the post hole structure. At this time, the disassembly, assembly, replacement and the like are convenient.

The optical transceiver module 5 comprises a laser emitting device and a laser receiving device which are integrally installed, and occupies a small space.

In order to facilitate the manufacturing process, in this embodiment, optionally, an upper cover 6 is further disposed on the base 1, and the optical protective cover 2 and the upper cover 6 are detachably mounted, and may be mounted in an adhesive manner.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Claims

1. A suspended rotary optical scanning sensor, comprising:

a base (1);

the optical protection cover (2) is arranged on the base (1), and a cavity is formed inside the optical protection cover (2);

the motor (3) is arranged at the top of the optical protective cover (2), and the rotating end of the motor (3) is positioned in the cavity and faces downwards;

a mirror assembly (4) comprising: a rotating body (41), a reflecting mirror (42) and a power receiving coil circuit module (11), wherein the rotating body (41) is installed at the rotating end of the motor (3), and the reflecting mirror (42) is installed at the lower end of the rotating body (41) and forms an angle of approximately 45 degrees with the rotating shaft; the power receiving coil circuit module (11) is mounted on the lower end of the rotating body (41); and

an optical transceiver module (5) mounted on the base (1), wherein an optical path of the optical transceiver module (5) is substantially coaxial with the rotation axis and faces the reflector (42); still be equipped with power supply coil circuit module (12) on base (1), power supply coil circuit module (12) are close to receiving coil circuit module (11) and form the setting of non-contact induction power supply.

2. The suspended rotary optical scanning sensor of claim 1, wherein the neutral axis of the power coil circuit module (11) is arranged substantially coincident with the axis of rotation, and correspondingly, the neutral axis of the power coil circuit module (12) is arranged substantially coincident with the axis of rotation.

3. The suspended rotary optical scanning sensor of claim 2, further comprising: the photoelectric coding device comprises a photoelectric coding disc (13) and a photoelectric coding switch (14), wherein the photoelectric coding disc (13) is approximately coaxially arranged at the lower end of a rotating body (41) with a rotating shaft, and the photoelectric coding switch (14) is arranged on a base (1) and is aligned with the photoelectric coding disc (13).

4. The suspended rotary optical scanning sensor according to claim 3, characterized in that the photoelectric encoder disk (13) is integrally mounted on the power coil circuit module (12).

5. The suspended rotary optical scanning sensor of any of claims 1-4, further comprising: a first reflector shade cylinder (401) and a second reflector shade cylinder (402), wherein the light path of the first reflector shade cylinder (401) and the light path of the second reflector shade cylinder (402) form an angle of approximately 90 degrees and are converged on the reflector (42); the second reflector shade tube (402) is arranged close to the optical transceiving component (5), and the optical path of the second reflector shade tube (402) is approximately coaxial with the rotating shaft.

6. The suspended rotary optical scanning sensor of claim 5, wherein the first mirror shade cylinder (401) and the second mirror shade cylinder (402) are integrally formed as an L-shaped shade cylinder.

7. The suspended rotary optical scanning sensor of claim 6, wherein the L-shaped light shielding cylinder is detachably mounted to the lower end of the rotating body (41).

8. The suspended rotary optical scanning sensor of claim 7, wherein the lower end of the rotating body (41) has a first mounting plane at an angle of approximately 45 ° with respect to the rotation axis, and correspondingly, the convergence of the optical path of the L-shaped shade cylinder has a second mounting plane at an angle of approximately 45 ° with respect to the optical path, and the second mounting plane presses the mirror (42) against the first mounting plane and is fixed by the post hole structure.

9. A suspended rotary optical scanning sensor according to any of claims 1 to 4, wherein the optical transceiver component (5) comprises an integrally mounted laser emitting device and a laser receiving device.

10. A suspended rotary optical scanning sensor according to any of claims 1 to 4, wherein an upper cover (6) is further provided on the base (1), and the optical shield (2) is detachably mounted to the upper cover (6).