Laser radar with heat dissipation structure

Abstract

The utility model provides a laser radar with a heat dissipation structure, which comprises a protective shell for protecting a laser radar body and a fixed base for supporting and fixing the bottom of the laser radar body, heat dissipation openings for dissipating heat in the shell are formed in the two sides of the protective shell, and an obliquely downward opening can be used for dissipating heat in the shell under the action of gravity. Hot air is promoted to flow out naturally, so that the heat dissipation efficiency is improved. The inner wall of the protection shell is provided with a filtering mechanism for filtering air entering from the interior of the heat dissipation opening, a filtering plate can effectively block external dust and tiny particles, the dust and the tiny particles are prevented from entering the interior of the laser radar, the influence of environmental factors on the performance of the laser radar is reduced, and the stability of the working state of the laser radar is kept. The bottom of the fixed base is provided with a heat dissipation mechanism for enhancing internal air flow for heat dissipation, air flow can be accelerated, the air flow speed at the heat dissipation holes is improved, and therefore the heat dissipation efficiency of the laser radar is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of laser radar technology, and in particular relates to a laser radar with a heat dissipation structure. Background Art

[0002] LiDAR is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of a target. Its working principle is to emit a detection signal (laser beam) to the target, and then compare the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, relevant information about the target can be obtained, such as target distance, direction, height, speed, attitude, and even shape parameters, so as to detect, track and identify obstacles, vehicles and other targets. The shell of the existing LiDAR device cannot support the heat dissipation capacity required for its work, resulting in a shortened service life of the device. At the same time, the heat dissipation port is not designed with a dust removal structure, and dust and other tiny particles can more easily enter the interior of the LiDAR, which may lead to a decrease in heat dissipation efficiency, because the heat dissipation hole is blocked, which affects the discharge of heat. Long-term exposure to dust and pollutants may cause corrosion or damage to the internal components of the LiDAR, which will shorten the service life of the device.

[0003] In the announcement number CN 218848322 U, a laser radar with a heat dissipation structure is disclosed, which includes a box body, and the box body is composed of a front panel, a rear panel, a left panel, a right panel, a top panel and a bottom panel: a camera channel and a laser channel are arranged on the bottom panel; a first heat dissipation hole is arranged between the camera channel and the laser channel; a second heat dissipation hole and a first cover are arranged on the front panel; a third heat dissipation hole and a second cover are arranged on the rear panel; a host panel is arranged on the left panel, and a fourth heat dissipation hole is arranged above the host panel. The purpose is to solve the problem that the existing airborne laser radar camera or laser scanner is exposed outside the box body and has poor heat dissipation performance.

[0004] However, the heat dissipation holes of the above-mentioned device are not provided with a filter device. Without a filter plate, dust and other tiny particles can more easily enter the interior of the laser radar, which may lead to a decrease in heat dissipation efficiency, because the heat dissipation holes are blocked, which will affect the discharge of heat. In harsh environmental conditions, such as dusty or humid environments, the laser radar without a filter plate may not be able to maintain a good working condition, limiting its scope of application. At the same time, the practicality of the device is low. The device only dissipates heat through the heat dissipation holes. Relying solely on the heat dissipation holes for heat dissipation may not provide sufficient heat dissipation efficiency, especially when the laser radar power is large or the ambient temperature is high. This may cause the internal temperature of the laser radar to be too high, affecting its performance and stability. Therefore, in order to solve the above problems, a laser radar with a heat dissipation structure is proposed. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a laser radar with a heat dissipation structure which is highly practical and can be easily operated and has a relatively simple structure.

[0006] In order to solve the above technical problems, the utility model provides a laser radar with a heat dissipation structure, comprising: a protective shell for protecting the laser radar body, and a fixed base for supporting and fixing the bottom of the laser radar body, the protective shell is provided with heat dissipation ports for dissipating heat from the inside of the shell on both sides, the inner wall of the protective shell is provided with a filtering mechanism for filtering the air entering from the inside of the heat dissipation ports, the front side of the protective shell is threadedly connected with an optical cover for conveniently transmitting and receiving radar signals, the bottom of the laser radar body is fixed with fixed blocks for convenient installation and disassembly, and a supporting block matched with the fixed block is provided on the top of the fixed base, the laser radar body is provided with a signal processing mechanism, the signal processing mechanism includes a signal transmitting port and a signal receiving port, the signal transmitting port and the signal receiving port ensure that the laser beam can be effectively emitted through the optical cover on the front side of the protective shell, and can receive the reflected laser signal, and the bottom of the fixed base is provided with a heat dissipation mechanism for enhancing internal air flow for heat dissipation; the filtering mechanism includes a filter plate, wherein the filter plate abuts against the heat dissipation port on the inner wall of the protective shell; the heat dissipation mechanism includes a mounting groove, wherein the mounting groove is provided at the bottom of the fixed base.

[0007] As a further solution of the utility model, the heat dissipation port is designed to be high inside and low outside. The heat dissipation hole inclined downward is not easy to accumulate dust because gravity will help the dust slide down the inclined surface to keep the heat dissipation channel unobstructed.

[0008] As a further solution of the utility model, the filtering mechanism includes a filter plate and a fixed frame. The cross-section of the fixed frame is an L-shaped structure design and is fixed on both sides of the heat dissipation port. The filter plate is inserted in the fixed frame and contacts the heat dissipation port. The filter plate can effectively block external dust and tiny particles and prevent them from entering the interior of the laser radar.

[0009] As a further solution of the utility model, the cross section of the fixed base is a U-shaped structure, and the fixed base is fixed by inserting the top into the bottom of the protective shell and fixing it with screws at the four corners.

[0010] As a further solution of the utility model, the laser radar body is fixed on a fixed base, and has a certain height with the fixed base through a support block, thereby increasing the heat dissipation effect of the device.

[0011] As a further solution of the utility model, the heat dissipation mechanism includes a vent, a mounting groove and a heat dissipation fan. The mounting groove is opened at the bottom of the fixed base, the fixed base is installed in the mounting groove, and a vent is opened at the top of the fixed base at a position cooperating with the heat dissipation fan, which helps to quickly discharge the heat generated inside and keep the operating temperature of the laser radar within an ideal range.

[0012] Compared with the related art, the laser radar with a heat dissipation structure provided by the utility model has the following beneficial effects:

[0013] 1. The utility model designs the heat dissipation opening as an oblique opening structure with a high inside and a low outside. The oblique downward heat dissipation hole design helps prevent dust and debris from falling directly into the heat dissipation hole, which can reduce the risk of internal components being contaminated and keep the heat dissipation channel unobstructed. At the same time, the oblique downward opening can use gravity to promote the natural outflow of hot air, thereby improving the heat dissipation efficiency. This design helps to quickly discharge hot air and reduce heat accumulation inside the lidar.

[0014] 2. The utility model provides a filter device at the heat dissipation port. The filter plate can effectively block external dust and tiny particles and prevent them from entering the interior of the laser radar, which helps to protect the internal precision components and reduce the decrease in heat dissipation efficiency caused by dust accumulation. At the same time, due to the existence of the filter plate, the internal components will not be directly exposed to the external environment, which can extend the cleaning and maintenance cycle of the laser radar and reduce maintenance costs. The filter plate can reduce the impact of environmental factors on the performance of the laser radar and maintain the stability of its working state, especially in harsh environmental conditions, such as dusty or humid environments.

[0015] 3. The utility model is provided with a cooling fan on a fixed base, which can accelerate the air flow and increase the air flow speed at the heat dissipation holes, thereby effectively improving the heat dissipation efficiency of the laser radar. This helps to quickly discharge the heat generated inside and keep the operating temperature of the laser radar within an ideal range. In the absence of active heat dissipation equipment, heat accumulation may form inside the laser radar due to the rising hot air, causing local overheating. The cooling fan can break up this heat accumulation and ensure that the heat is evenly distributed and discharged. By keeping the temperature of the laser radar stable, performance instability or failures caused by temperature fluctuations can be reduced, thereby improving the overall stability and reliability of the laser radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is a schematic diagram of the exploded structure of the protective shell and the fixed base of the utility model;

[0019] Figure 3 It is a cross-sectional perspective schematic diagram of the protective shell and optical cover structure of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the cross-section of the protective shell structure of the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the cross-section of the fixed base and the heat dissipation mechanism structure of the utility model.

[0022] In the figure: 1. Protective shell; 2. Heat dissipation port; 3. Fixed base; 4. Optical cover; 5. LiDAR body; 6. Signal transmitting port; 7. Signal receiving port; 8. Fixed block; 9. Filter plate; 10. Fixed frame; 11. Support block; 12. Ventilation port; 13. Mounting slot; 14. Cooling fan; 15. Screws. DETAILED DESCRIPTION

[0023] Please refer to Figure 1-5 A laser radar with a heat dissipation structure comprises: a protective shell 1 for protecting a laser radar body 5, and a fixed base 3 for supporting and fixing the bottom of the laser radar body 5, heat dissipation ports 2 for dissipating heat from the inside of the shell are provided on both sides of the protective shell 1, a filtering mechanism for filtering air entering from the heat dissipation port 2 is provided on the inner wall of the protective shell 1, an optical cover 4 for conveniently transmitting and receiving radar signals is threadedly connected to the front side of the protective shell 1, fixed blocks 8 for convenient installation and disassembly are fixed on both sides of the bottom of the laser radar body 5, and a supporting block 11 matching the fixed block 8 is provided on the top of the fixed base 3, a signal processing mechanism is provided on the laser radar body 5, and a heat dissipation mechanism for enhancing internal air flow for heat dissipation is provided at the bottom of the fixed base 3.

[0024] Preferably, the heat dissipation hole 2 is designed with an inner high and outer low slanted opening. The heat dissipation hole slanted downward is not easy to accumulate dust because gravity will help the dust slide down the slope to keep the heat dissipation channel unobstructed. The heat dissipation hole design slanted downward helps prevent dust and debris from falling directly into the heat dissipation hole, which can reduce the risk of contamination of internal components.

[0025] Preferably, the filtering mechanism includes a filter plate 9 and a fixed frame 10. The cross-section of the fixed frame 10 is an L-shaped structure and is fixed on both sides of the heat dissipation port 2. The filter plate 9 is inserted into the fixed frame 10 and contacts the heat dissipation port 2. The filter plate can effectively block external dust and tiny particles and prevent them from entering the interior of the laser radar, which helps to protect the internal precision components and reduce the decrease in heat dissipation efficiency due to dust accumulation.

[0026] Preferably, the cross-section of the fixed base 3 is a U-shaped structure. The fixed base 3 is fixed by inserting the top into the bottom of the protective shell 1 and fixing it with screws 15 at the four corners. The laser radar body 5 is fixed on the fixed base 3 and has a certain height with the support block 11 and the fixed base 3, so that the heat of the laser radar body 5 is relatively uniform, reducing the possibility of local overheating.

[0027] Preferably, the signal processing mechanism includes a signal transmitting port 6 and a signal receiving port 7. The signal transmitting port 6 and the signal receiving port 7 ensure that the laser beam can be effectively emitted through the optical cover 4 on the front side of the protective shell 1, and can receive the reflected laser signal. The optical cover 4 is usually made of a material with high light transmittance, such as special plastic or glass, to minimize the loss in signal transmission. The optical cover 4 needs to have a certain anti-interference ability to prevent environmental factors (such as rain, dust, etc.) from affecting the emission and reception of the laser.

[0028] Preferably, the heat dissipation mechanism includes a vent 12, a mounting groove 13 and a heat dissipation fan 14. The mounting groove 13 is opened at the bottom of the fixed base 3, the fixed base 3 is installed in the mounting groove 13, and a vent 12 is opened at a position on the top of the fixed base 3 that matches the heat dissipation fan 14. By installing the heat dissipation fan 14 at the bottom of the vent 12 and placing a filter plate 9 above the vent 12, the heat dissipation fan 14 can accelerate the air flow and increase the air flow speed at the heat dissipation port 2, thereby effectively improving the heat dissipation efficiency of the laser radar, which helps to quickly discharge the heat generated inside and keep the operating temperature of the laser radar within an ideal range.

[0029] The working principle of a laser radar with a heat dissipation structure provided by the utility model is as follows:

[0030] When in use, align the fixing blocks 8 on both sides of the bottom of the laser radar body 5 with the supporting blocks 11 on the fixed base 3, and use tools to thread the screws 15 to connect the two.

[0031] After the laser radar body 5 is installed, the two filter plates 9 are respectively inserted into the fixed frame 10 in the protective shell 1. After the filter plates 9 are installed, a filter plate 9 is glued above the vent 12 at the top of the fixed base 3, and the bottom of the protective shell 1 is inserted into the assembled fixed base 3. Use screws 15 to connect the protective shell 1 and the fixed base 3.

[0032] The cooling fan 14 is installed in the installation groove 1 at the bottom of the fixed base 3 , and finally the optical cover 4 is fixed to the protective shell 1 and the fixed base 3 using screws 15 .

[0033] Before officially using the LiDAR for data collection, a series of tests and verifications should be performed to ensure that the LiDAR can accurately capture the distance and speed of the target object. Before starting the LiDAR, conduct a comprehensive inspection to ensure that all heat dissipation components are properly installed and working properly. During the operation of the LiDAR, monitor its temperature changes and adjust the heat dissipation system if necessary to ensure optimal performance.

[0034] Check the heat dissipation mechanism regularly, clean the dust and dirt accumulated in the heat dissipation port 2 and replace the filter plate 9 to maintain a good heat dissipation effect.

[0035] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A laser radar with a heat dissipation structure, comprising: A protective shell (1) for protecting a laser radar body (5), and a fixed base (3) for supporting and fixing the bottom of the laser radar body (5), characterized in that: heat dissipation ports (2) for dissipating heat from the inside of the shell are opened on both sides of the protective shell (1), and a filtering mechanism for filtering air entering from the heat dissipation ports (2) is arranged on the inner wall of the protective shell (1), an optical cover (4) for conveniently transmitting and receiving radar signals is threadedly connected to the front side of the protective shell (1), and optical covers (4) for conveniently installing and removing the laser radar body (5) are fixed on both sides of the bottom of the laser radar body (5). A fixed block (8) is disposed on the top of the fixed base (3) and a support block (11) matched with the fixed block (8) is disposed; a signal processing mechanism is disposed on the laser radar body (5); the signal processing mechanism includes a signal transmitting port (6) and a signal receiving port (7); the signal transmitting port (6) and the signal receiving port (7) ensure that the laser beam can be effectively emitted through an optical cover (4) on the front side of the protective shell (1) and can receive the reflected laser signal; and a heat dissipation mechanism for enhancing internal air flow for heat dissipation is disposed at the bottom of the fixed base (3); The filtering mechanism comprises a filtering plate (9), wherein the filtering plate (9) abuts against a heat dissipation opening (2) on the inner wall of the protective shell (1); The heat dissipation mechanism comprises a mounting groove (13), wherein the mounting groove (13) is provided at the bottom of the fixed base (3).

2. The laser radar with a heat dissipation structure according to claim 1, characterized in that: The heat dissipation opening (2) is designed to be high inside and low outside. The heat dissipation opening inclined downward is not easy to accumulate dust because gravity will help the dust slide down the inclined surface, thus keeping the heat dissipation channel unobstructed.

3. The laser radar with a heat dissipation structure according to claim 1, characterized in that: The filtering mechanism comprises a filtering plate (9) and a fixing frame (10); the fixing frame (10) has an L-shaped cross section and is fixed on both sides of the heat dissipation port (2); the filtering plate (9) is inserted into the fixing frame (10) to contact the heat dissipation port (2).

4. The laser radar with a heat dissipation structure according to claim 1, characterized in that: The cross section of the fixed base (3) is a circular structure. The fixed base (3) is inserted into the bottom of the protective shell (1) at the top and fixed at the four corners using screws (15).

5. The laser radar with a heat dissipation structure according to claim 1, characterized in that: The laser radar body (5) is fixed on the fixed base (3) and has a certain height with the fixed base (3) through the support block (11), thereby increasing the heat dissipation effect of the device.

6. The laser radar with a heat dissipation structure according to claim 1, characterized in that: The heat dissipation mechanism comprises a vent (12), a mounting groove (13) and a heat dissipation fan (14); the mounting groove (13) is arranged at the bottom of the fixed base (3); the fixed base (3) is installed in the mounting groove (13); and the top of the fixed base (3) is provided with a vent (12) at a position matching with the heat dissipation fan (14).

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