Laser radar device based on double two-dimensional laser galvanometer scanning

Abstract

The utility model discloses a laser radar device based on double two-dimensional laser galvanometer scanning, which comprises a base, a boss is fixed at the central position of the upper end face of the base, a motor is fixed on the upper end face of the boss, and a laser radar body is fixed at the output end of the motor; a laser transmitter is fixed in the laser radar body, air holes are formed in the laser radar body, a lens is further fixed to the front side of the laser radar body, and an extension frame fixed to the laser radar body is arranged on the outer side of the lens; a threaded rod is in angle connection with the base, an anti-skid pad is installed on the end face of the threaded rod, and the lower end face of the anti-skid pad is of a rough structure. According to the laser radar device based on double-two-dimensional laser galvanometer scanning, the rotating mechanism is adopted, the comprehensive scanning detection effect can be achieved so that the actual scanning requirement can be met, the rapid heat dissipation effect of the laser transmitter can be achieved in cooperation with an air cooling mechanism composed of heat dissipation fins and air holes, and then the service life of the laser transmitter is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser radars, in particular to a laser radar device based on dual two-dimensional laser galvanometer scanning. Background Art

[0002] Laser radar is an active detection system. Its working principle is to actively transmit laser signals to the target to be measured and receive the laser signals reflected back by the target. By comparing and analyzing the characteristics of the transmitted and received signals, the information of the target to be measured is obtained. Dual two-dimensional laser galvanometer scanning laser radar is one of them. It mainly realizes three-dimensional scanning of terrain and buildings. It is widely used in engineering construction and surveying and mapping projects. However, in actual use, the temperature of the laser transmitter head of the existing laser scanning radar will rise sharply due to the long-term operation of the laser, and the existing device lacks a heat dissipation mechanism, which affects the service life of the device. In addition, in the process of engineering surveying and mapping, when a lot of external dust adheres to the surface lens of the laser scanning radar, it will affect the emission and reflection recovery of the laser, thereby effectively scanning the data. To this end, in response to the above problems, a laser radar device based on dual two-dimensional laser galvanometer scanning is designed to better meet the actual use needs. Utility Model Content

[0003] The purpose of the utility model is to provide a laser radar device based on dual two-dimensional laser galvanometer scanning to solve the problems of inconvenience in heat dissipation and dust adhesion affecting scanning data raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser radar device based on dual two-dimensional laser galvanometer scanning, comprising a base, a boss is fixed at the center position of the upper end surface of the base, a motor is fixed to the upper end surface of the boss, and a laser radar body is fixed to the output end of the motor; a laser emitter is fixed in the laser radar body, an air hole is opened on the laser radar body, a lens is also fixed on the front side of the laser radar body, and an extension frame fixed to the laser radar body is provided on the outer side of the lens.

[0005] Preferably, a threaded rod is connected at an angle on the base, and an anti-skid pad is installed on the end face of the threaded rod, and the lower end face of the anti-skid pad is a rough structure. When the device is in use, the height of the base can be adjusted by the action of the threaded rod and the anti-skid pad, so as to achieve the leveling effect of the device and ensure normal scanning.

[0006] Preferably, four groups of connecting frames are fixed at equal angles on the lower end surface of the laser radar body, and balls are installed on the connecting frames, and the balls contact the bosses and can roll. When the laser radar body rotates to achieve scanning, the stability of the rotation of the laser radar body can be ensured by the rolling action between the balls and the bosses and the limiting action of the connecting frames.

[0007] Preferably, heat sink fins are fixed to the outside of the laser emitter, and the heat sink fins are distributed at equal angles with respect to the center of the laser emitter. The heat sink fins can effectively increase the contact area with the air, thereby ensuring the heat dissipation effect of the laser emitter.

[0008] Preferably, the length of the heat dissipation fin is smaller than the distance between the laser emitter and the laser radar body. By limiting the length of the heat dissipation fin, air flow can be facilitated.

[0009] Preferably, the wind holes are distributed at equal angles about the center of the laser radar body, and the wind holes are an inclined structure. Through the action of the wind holes, when the laser radar body rotates, the outside air can enter the laser radar body conveniently, thereby ensuring the heat dissipation of the laser emitter.

[0010] Preferably, the distance between the extension frame and the lens is 2-3 cm, and the extension frame is a ring structure. By limiting the structural dimensions of the extension frame, the protective effect on the lens can be guaranteed.

[0011] Preferably, the extension frame is also provided with air vents symmetrically and evenly distributed on the left and right, and the air vents are trumpet-shaped structures. Through the action of the air vents, the wind gathering effect can be achieved, thereby providing a basic guarantee for blowing away dust on the surface of the lens, avoiding dust adhesion and affecting the scanning data, and thus ensuring the accuracy of the device measurement data.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The laser radar device based on dual two-dimensional laser galvanometer scanning adopts a rotating mechanism to achieve comprehensive scanning and detection to meet the actual scanning needs. Combined with the air cooling mechanism composed of heat dissipation fins and air holes, it can achieve rapid heat dissipation of the laser transmitter, thereby effectively ensuring the service life of the laser transmitter:

[0014] 2. The laser radar device based on dual two-dimensional laser galvanometer scanning adopts the functions of extension frame and air outlet, which can not only realize the protection function of the lens and reduce dust adhesion, but also cooperate with the wind gathering function of the air outlet to form high-speed wind flow on the lens surface, thereby realizing the dust cleaning function on the lens surface, ensuring the cleanliness of the lens, and thus ensuring the accuracy of the scanning data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the device of the utility model when viewed from above;

[0017] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the laser radar body cross-section of the utility model.

[0019] In the figure: 1. base; 101. threaded rod; 102. anti-slip pad; 2. boss; 3. motor; 4. laser radar body; 401. connecting frame; 402. ball bearing; 5. laser transmitter; 501. heat sink; 6. air hole; 7. lens; 8. extension frame; 801. air outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a laser radar device based on dual two-dimensional laser galvanometer scanning, including a base 1, a boss 2 is fixed at the center position of the upper end surface of the base 1, a motor 3 is fixed to the upper end surface of the boss 2, and a laser radar body 4 is fixed to the output end of the motor 3; a laser emitter 5 is fixed in the laser radar body 4, an air hole 6 is opened on the laser radar body 4, a lens 7 is also fixed on the front side of the laser radar body 4, and an extension frame 8 fixed to the laser radar body 4 is arranged on the outer side of the lens 7.

[0022] A threaded rod 101 is connected at an angle on the base 1, and an anti-skid pad 102 is installed on the end face of the threaded rod 101, and the lower end face of the anti-skid pad 102 is a rough structure; four sets of connecting frames 401 are fixed at equal angles on the lower end face of the laser radar body 4, and a ball 402 is installed on the connecting frame 401, and the ball 402 contacts the boss 2 and can roll;

[0023] When using the laser radar device based on dual two-dimensional laser galvanometer scanning, Figure 1-Figure 4As shown, first place the entire device, and adjust the height of the anti-skid pad 102 by rotating the threaded rod 101, so as to achieve the leveling effect of the entire device and ensure that the laser radar body 4 is in a horizontal state. After the adjustment is completed, the entire device is powered by an external power supply, and the motor 3 is started to drive the laser radar body 4 to rotate. The rolling effect between the connecting frame 401 and the ball 402 and the boss 2 can ensure the stability of the rotation of the laser radar body 4. The laser emitter 5 and the refraction of the laser galvanometer in the laser radar body 4 can make the laser emitter 5 and the laser galvanometer in the laser radar body 4 emit outward through the lens 7, and the reflected laser is received by the laser radar body 4 through the lens 7, thereby realizing the scanning effect, and the rotation of the laser radar body 4 can achieve 360° scanning to ensure the accuracy of the scanning data.

[0024] A heat sink 501 is also fixed on the outside of the laser emitter 5, and the heat sink 501 is distributed at equal angles with respect to the center of the laser emitter 5; the length of the heat sink 501 is less than the distance between the laser emitter 5 and the laser radar body 4; the air holes 6 are distributed at equal angles with respect to the center of the laser radar body 4, and the air holes 6 are inclined structures; the extension frame 8 is also symmetrically and evenly distributed with air outlets 801, and the air outlets 801 are trumpet-shaped structures; the distance from the extension frame 8 to the lens 7 is 2-3 cm, and the extension frame 8 is a ring structure;

[0025] During the scanning process, Figure 1-Figure 4 As shown, the lens 7 can be protected by the extension frame 8, which can effectively reduce the dust adhesion on the surface of the lens 7, and when the laser radar body 4 rotates, the wind gathering effect of the air outlet 801 can form a high-speed airflow on the surface of the lens 7, thereby effectively avoiding the dust adhesion on the surface of the lens 7, ensuring the cleanliness of the lens 7, and thus ensuring the accuracy of the scanning data. When the laser radar body 4 rotates, the wind hole 6 of the tilting mechanism can allow external airflow to enter the laser radar body 4, thereby accelerating the air flow inside the laser radar body 4, and the effect of the heat dissipation fins 501 can achieve rapid heat dissipation of the laser emitter 5, ensuring the heat dissipation effect of the laser emitter 5, thereby effectively extending the service life of the laser emitter 5. This is the working principle of the laser radar device based on dual two-dimensional laser galvanometer scanning.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser radar device based on dual two-dimensional laser galvanometer scanning, comprising a base (1), a boss (2) fixed at the center of the upper end surface of the base (1), a motor (3) fixed to the upper end surface of the boss (2), and a laser radar body (4) fixed to the output end of the motor (3); characterized in that: A laser transmitter (5) is fixed inside the laser radar body (4), an air hole (6) is provided on the laser radar body (4), a lens (7) is also fixed on the front side of the laser radar body (4), and an extension frame (8) fixed on the laser radar body (4) is provided on the outside of the lens (7).

2. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 1, characterized in that: The base (1) is connected at an angle to a threaded rod (101), and an anti-skid pad (102) is installed on the end surface of the threaded rod (101), and the lower end surface of the anti-skid pad (102) is a rough structure.

3. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 1, characterized in that: Four groups of connecting frames (401) are fixed at equal angles on the lower end surface of the laser radar body (4), and balls (402) are installed on the connecting frames (401), and the balls (402) are in contact with the boss (2) and can roll.

4. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 1, characterized in that: Heat dissipation fins (501) are also fixed on the outside of the laser emitter (5), and the heat dissipation fins (501) are distributed at equal angles with respect to the center of the laser emitter (5).

5. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 4, characterized in that: The length of the heat dissipation fin (501) is less than the distance between the laser emitter (5) and the laser radar body (4).

6. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 1, characterized in that: The wind holes (6) are distributed at equal angles with respect to the center of the laser radar body (4), and the wind holes (6) are inclined structures.

7. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 1, characterized in that: The extension frame (8) is also provided with air outlets (801) which are evenly distributed in a bilaterally symmetrical manner, and the air outlets (801) are trumpet-shaped structures.

8. The laser radar device based on dual two-dimensional laser galvanometer scanning according to claim 1, characterized in that: The distance between the extension frame (8) and the lens (7) is 2-3 cm, and the extension frame (8) is a ring-shaped structure.

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