Laser radar automatic dimming device

Abstract

The utility model discloses an automatic dimming device for a laser radar, which comprises a mounting base, a fixing frame arranged on the mounting base, an adjusting frame movably connected with the fixing frame, and an adjusting mechanism used for adjusting the angle of the adjusting frame, and a reflecting mirror is mounted on the adjusting frame. The adjusting mechanism comprises an adjusting frame, a driving mechanism arranged on the adjusting frame and two adjusting screws connected with the driving mechanism, the ends of the adjusting screws abut against and make contact with the adjusting frame, the driving mechanism drives the adjusting screws to move in the direction close to or away from the adjusting frame, the number of the adjusting screws is two, and the adjusting screws are arranged in the direction close to or away from the adjusting frame. And each adjusting screw rod can be independently driven. According to the scheme, through automatic adjustment, the problems that the light path of the laser radar is changed due to temperature change or vibration and light needs to be adjusted by personnel are solved, especially for the outdoor unattended laser radar, personnel maintenance and debugging are greatly reduced, equipment does not need to be started, and remote control is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of laser radar, more specifically, relate to a laser radar automatic light adjusting device. BACKGROUND

[0002] Laser radar emits specific wavelength laser beams to the atmosphere, and measures the concentration and distribution of specific components in the atmosphere through Rayleigh scattering, Mie scattering, Raman scattering or absorption effect with molecules and aerosol particles in the air.

[0003] The laser beam of the laser radar is emitted by a laser, expanded, reflected, and directionally adjusted, and finally emitted from the optical telescope axis, enters the atmosphere, and the telescope receives the signals returned after the interaction of various molecules and particles in the atmosphere on the laser emission path, and obtains the collected signals through the photoelectric conversion system. The matching degree of the laser emission system and the signal receiving system directly affects the accuracy of the collected signals, thereby affecting the final data of the radar. The optical path needs to be adjusted manually by personnel due to temperature changes or vibration of the laser radar, especially for outdoor unattended laser radars, which is difficult to maintain. SUMMARY

[0004] The utility model discloses a laser radar automatic light adjusting device, which solves the technical problems in the background art.

[0005] The utility model technical scheme provides a laser radar automatic light adjusting device, it includes installation base, the fixed frame that is set on the installation base, with the adjustment frame that the fixed frame is movably connected, and the adjusting mechanism for adjusting the angle of the adjustment frame, the mirror is installed on the adjustment frame;

[0006] The adjusting mechanism includes a drive mechanism arranged on the adjusting frame and an adjusting screw connected with the drive mechanism, the end of the adjusting screw is in contact with the adjustment frame, the drive mechanism drives the adjusting screw to move along the direction close to or away from the adjustment frame, the adjusting screw is provided with two, and each adjusting screw can be driven independently.

[0007] In a preferred embodiment, the adjustment frame is in the form of a right-angled triangle, and the two adjusting screws are located at the two acute angles respectively.

[0008] In a preferred embodiment, a spherical structure is arranged on the adjusting screw and in contact with the adjustment frame, and the spherical structure is rotatably connected with the adjustment frame.

[0009] In a preferred embodiment, a limiting groove is arranged on the back of the adjustment frame, and the spherical structure extends into the limiting groove.

[0010] In a preferred embodiment, the driving mechanism comprises a driving motor, a driving wheel connected with the output end of the driving motor and a driven wheel engaged with the driving wheel, and the adjusting screw is connected with the driven wheel.

[0011] In a preferred embodiment, the fixing frame is provided with a threaded hole, and the adjusting screw is arranged through the threaded hole.

[0012] In a preferred embodiment, the fixing frame and the adjusting frame are movably connected through two springs and a universal joint, the two springs are arranged at two acute angles of the adjusting frame, and the universal joint is arranged at the direct of the adjusting frame.

[0013] The technical scheme of the utility model has the advantages of:

[0014] The scheme solves the problem that the light path of a laser radar changes due to temperature change or vibration and personnel is needed to adjust the light, especially for the laser radar without personnel on duty outdoors, greatly reduces the need for personnel maintenance and debugging, does not need to open the equipment, and can be remotely controlled. Meanwhile, the device structure is compact, small in size, can be compatible with installation on existing radar products, and can be upgraded. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 Fig. 1 is a schematic diagram of the overall structure of the utility model,

[0016] Fig. 2 Fig. 2 is another schematic diagram of the overall structure of the utility model,

[0017] Fig. 3 Fig. 3 is still another schematic diagram of the overall structure of the utility model.

[0018] The reference signs are as follows: 1, mounting base; 2, fixing support; 3, adjusting frame; 4, adjusting frame; 5, adjusting screw; 6, spherical structure; 7, limiting groove; 8, driving motor; 9, driving wheel; 10, driven wheel; 11, universal joint; 12, spring; 13, reflecting mirror. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings and specific embodiments. The embodiments of the utility model are given for the convenience of example and description, and are not exhaustive or limit the utility model to the disclosed forms. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0020] As Figs. 1-3The utility model discloses technical scheme provides a laser radar automatic light adjusting device, including installation baseplate 1, set up on the installation baseplate 1 fixed frame 2, with the fixed frame 2 swing joint's adjusting frame 3 and for adjusting the adjusting frame 3 angle's adjusting mechanism, reflector 13 is installed on the adjusting frame 3. The adjusting mechanism includes adjusting frame 4 set up on the adjusting frame 4 drive mechanism and with the drive mechanism connection's adjusting screw 5, the end of adjusting screw 5 and adjusting frame 3 resist pressure contact, the drive mechanism drives adjusting screw 5 along close or far from adjusting frame 3 direction movement, adjusting screw 5 is provided with two, each adjusting screw 5 can be driven alone.

[0021] When installing, the installation baseplate 1 is fixed to the laser emission plane light path reflection, and the included angle with the incident light is 45 degrees. Usually, the emitted light is reflected several times, and finally passes through the upper part of the telescope and is emitted coaxially with the telescope into the atmosphere. The reflector 13 is placed in the lens groove of the adjusting frame 3 and fixed. The mirror surface of the lens is parallel to the end surface of the adjusting frame 3. By adjusting the angle of the adjusting frame 3, the angle of the reflector 13 can be adjusted. The two adjusting screws 5 are located on the back of the adjusting frame 3. The two drive mechanisms corresponding to the adjusting screws 5 can drive the adjusting screws 5 to push the adjusting frame 3. The two adjusting screws 5 push at different points. The two adjusting screws 5 are driven separately, thereby realizing omnidirectional adjustment of the angle of the adjusting frame 3, and indirectly realizing adjustment of the angle of the reflector 13.

[0022] The adjusting frame 3 is in the shape of a right triangle. The two adjusting screws 5 are located at the two acute angles, respectively. The two adjusting screws 5 are located on the two sides of the adjusting frame 3, and have a certain spacing therebetween. The adjusting effect is more obvious.

[0023] The shape of the fixed frame 2 is substantially the same as that of the adjusting frame 3. The fixed frame 2 and the adjusting frame 3 are movably connected through two springs 12 and a universal joint 11. The two springs 12 are arranged at the two acute angles of the adjusting frame 3. The universal joint 11 is arranged at the direct angle of the adjusting frame 3. The spring 12 is in a lifted state. The universal joint 11 connects the adjusting frame 3 and the fixed frame 2. During adjustment, the adjusting frame 3 can rotate around the universal joint 11. The spring 12 can reset the adjusting frame 3 when the adjusting screw 5 is retracted. The above-mentioned connecting structure can realize synchronous movement of the adjusting frame 3 when the adjusting screw 5 moves, and the adjusting flexibility is high.

[0024] A spherical structure 6 is arranged on the adjusting screw 5 and in contact with the adjusting frame 3. The spherical structure 6 is movably connected with the adjusting frame 3. A limiting groove 7 is arranged on the back of the adjusting frame 3. The spherical structure 6 extends into the limiting groove 7. The spherical structure 6 reduces the friction between the adjusting screw 5 and the adjusting frame 3, and avoids jamming during adjustment.

[0025] The driving mechanism comprises a driving motor 8, a driving wheel 9 connected with the output end of the driving motor 8, and a driven wheel 10 engaged with the driving wheel 9, and the adjusting screw 5 is connected with the driven wheel 10. Threaded holes are arranged on the fixed frame 2, and the adjusting screw 5 is arranged through the threaded holes. The driving motor 8 drives the driving wheel 9 to rotate, drives the driven wheel 10 engaged with the driving wheel 9 to rotate, and then realizes the axial movement of the adjusting screw 5, realizes the angle adjustment, and the driving motor 8 is a direct-current speed reduction motor.

[0026] During adjustment, the radar acquisition software can display the real-time received acquisition signal, one of the driving motors 8 is first adjusted to rotate in one direction through the control system, the change of the feedback signal is observed, if the signal strength becomes stronger, the same direction is continuously rotated until the signal becomes weaker. Similarly, if the signal strength becomes weaker, it means that the adjustment direction is reversed, and the adjustment direction needs to be changed. After the signal in one direction is adjusted to the optimum, the other driving motor 8 is adjusted to perform the same adjustment steps, so that the radar signal reaches the optimum. The two driving motors 8 are repeatedly executed for several times, and the path of the reflected laser can reach the optimum.

[0027] The scheme solves the problem that the light path of the laser radar changes due to temperature change or vibration, and personnel adjustment is required, especially for the outdoor unattended laser radar, greatly reduces the need for personnel maintenance and debugging, does not need to open the equipment, and can be controlled remotely. At the same time, the device structure is compact, and miniaturization is emphasized, and can be compatible with existing radar products for upgrading and modification.

[0028] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by ordinary skilled in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A laser radar automatic light adjusting device, characterized by: The adjusting mechanism comprises an adjusting frame, a driving mechanism arranged on the adjusting frame, and an adjusting screw connected with the driving mechanism, the end of the adjusting screw is in contact with the adjusting frame, the driving mechanism drives the adjusting screw to move towards or away from the adjusting frame, and the adjusting screw is provided as two, each of the adjusting screws can be driven independently. The adjusting frame is in the shape of a right triangle as a whole, and the two adjusting screws are respectively arranged at two acute angles.

2. The laser radar automatic light adjusting device according to claim 1, wherein: A spherical structure is arranged on the adjusting screw and in contact with the adjusting frame, and the spherical structure is rotationally connected with the adjusting frame.

3. The laser radar automatic light adjusting device according to claim 1, wherein: A limiting groove is arranged on the back of the adjusting frame, and the spherical structure extends into the limiting groove.

4. The laser radar automatic light adjusting device according to claim 3, wherein: The driving mechanism comprises a driving motor, a driving wheel connected with the output end of the driving motor, and a driven wheel engaged with the driving wheel, and the adjusting screw is connected with the driven wheel.

5. The laser radar automatic light adjusting device according to claim 1, wherein: A threaded hole is arranged on the fixing frame, and the adjusting screw is arranged through the threaded hole.

6. The laser radar automatic light adjusting device according to claim 5, wherein: The fixing frame and the adjusting frame are movably connected through two springs and a universal joint, the two springs are arranged at two acute angles of the adjusting frame, and the universal joint is arranged at the direct of the adjusting frame.

7. The laser radar automatic light adjusting device according to claim 2, wherein: ​

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