Self-cleaning device for a lidar

Abstract

The utility model discloses a kind of self-cleaning devices for laser radar, it is related to laser radar cleaning technical field, including laser radar installation cover, the inside of laser radar installation cover is equipped with heat preservation bin, installation bin, mounting seat, the inside of installation bin is equipped with air pump, installation bin inner chamber is equipped with heater, wind knife is installed on the laser radar installation cover.This self-cleaning device for laser radar, by the cooperation of wind knife, air pump, heater and temperature detector, by air pump and wind knife cooperation, utilize wind knife to generate oblique downward impact air curtain and laser radar surface contact, can realize to the rain and dew, dust, insect net of laser radar surface and carry out self-cleaning, simultaneously utilize the cooperation of heater, in low temperature environment, utilize the hot air flow generated by heater to improve air curtain temperature, utilize hot gas to clean the frost and snow on the surface of laser radar, change the mode of traditional manual cleaning, can greatly reduce manpower input.

Description

Technical Field

[0001] This utility model relates to the field of lidar cleaning technology, specifically a self-cleaning device for lidar. Background Technology

[0002] LiDAR plays a crucial role in monitoring moving objects in tunnels, highways, urban areas, factories, warehousing and logistics, and robotics. During daily operation, lidar is exposed to the environment, and dirt such as dust and insect webs on its surface can affect its ability to receive reflected laser beams, leading to inaccurate detection or even malfunction.

[0003] In addition, when lidar is applied in regions with different temperatures, the large temperature and humidity difference during the day can cause frost, dew, snow, etc. on the lidar surface, which can also affect the normal operation of the lidar.

[0004] The current method for removing the above stains requires regular manual cleaning of the lidar surface, which increases maintenance costs. In addition, manual cleaning is dangerous in traffic locations such as tunnels and highways. Therefore, we have designed a self-cleaning device for lidar. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a self-cleaning device for lidar, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a self-cleaning device for lidar, comprising a lidar mounting cover, wherein the lidar mounting cover is provided with an insulation chamber, a mounting chamber, and a mounting base, the mounting chamber is provided with an air pump, the inner cavity of the mounting chamber is provided with a heater, the lidar mounting cover is equipped with an air knife, and the mounting base is equipped with a lidar located inside the air knife.

[0007] Preferably, the output shaft end of the air pump is connected to a main pipe, the main pipe is connected to a branch pipe, and the branch pipe extends into the insulation chamber. One end of the main pipe is connected to an air knife.

[0008] Preferably, the lidar mounting cover is equipped with a temperature detector and a controller, the controller being used to control the temperature detector, air pump, and heater.

[0009] Preferably, the inner cavity of the mounting base is connected to the inner cavity of the mounting compartment, and an air inlet is provided at the bottom of the lidar mounting cover and below the mounting base, and a filter device is installed on the air inlet.

[0010] Preferably, the filtering device is a filter screen.

[0011] This invention provides a self-cleaning device for lidar, which has the following beneficial effects: This self-cleaning device for lidar uses a combination of an air knife, an air pump, a heater, and a temperature detector. The air pump and air knife work together to create a downward-sloping impact air curtain that contacts the lidar surface, effectively cleaning away rain, dust, and insect webs. Simultaneously, the heater, in low-temperature environments, raises the air curtain temperature using the hot air, cleaning away frost and snow on the lidar surface. This significantly reduces manpower compared to traditional manual cleaning methods. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of this utility model; Figure 2 This is a schematic diagram of the external structure of this utility model; Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 4 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0013] In the diagram: 1. LiDAR; 2. Air knife; 3. Air pump; 4. Heater; 5. Main pipeline; 6. Filter device; 7. Insulation chamber; 8. LiDAR mounting cover; 9. Mounting chamber; 10. Mounting base; 11. Partition; 12. Vent.

[0014] Specific implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Example 1: Refer to Figures 1-2 This utility model provides a self-cleaning device for lidar, including a lidar mounting cover 8. The lidar mounting cover 8 has an insulated chamber 7, a mounting chamber 9, and a mounting base 10 inside. An air pump 3 is installed inside the mounting chamber 9. A heater 4 is fixedly connected to the inner cavity of the mounting chamber 9. One end of the heater 4 extends into the inner cavity of the insulated chamber 7. The inner wall of the insulated chamber 7 is lined with high-temperature resistant insulation cotton. An air knife 2 is installed on the lidar mounting cover 8, and a lidar 1 is installed on the mounting base 10. The lidar 1 is located inside the air knife 2. The air knife 2 is an annular air knife.

[0016] The output shaft of the air pump 3 is connected to the main pipe 5, and a branch pipe is connected to the main pipe 5, which extends into the insulation chamber 7. One end of the main pipe 5 is connected to the air knife 2.

[0017] A temperature detector and a controller are installed on the lidar mounting cover 8. The controller is used to control the temperature detector, air pump 3, and heater 4. When in use, air pump 3 starts to draw in air. The external airflow enters the inner cavity of the mounting chamber 9 after being filtered by the filter device 6. Air pump 3 delivers the blown airflow through the main pipe 5 to the inside of the air knife 2. After the airflow enters the air knife 2, it is blown out at high speed in the form of a thin sheet of airflow. Through the Coanda effect principle and the special geometry of the air knife, a thin, high-intensity, large-airflow impact air curtain is formed to blow away impurities, dust, residual liquid, moisture, and insect webs on the surface of lidar 1, achieving self-cleaning. The air pump 3 can be set to start at a timer by the controller. When the temperature is below 0 degrees Celsius, it can ensure that the lidar surface is clean when working at room temperature and will not be affected by frost, rain, dew, snow, or other stains.

[0018] The inner cavity of the mounting base 10 is connected to the inner cavity of the mounting chamber 9, and an air inlet is provided at the bottom of the lidar mounting cover 8 located below the mounting base 10, and a filter device 6 is installed on the air inlet, the filter device 6 being a filter screen.

[0019] Example 2, please refer to Figure 3 Based on Embodiment 1, a partition 11 is fixedly connected inside the lidar mounting cover 8 and located in the inner cavity of the mounting chamber 9. The partition 11 is located above the air pump 3. An air vent 12 is provided inside the lidar mounting cover 8 and located outside the mounting chamber 9. A filter device 6 is also provided in the inner cavity of the air vent 12. The filter device 6 is a filter screen. The mounting chamber 9 is divided into two chambers by the partition 11, so that the upper chamber forms an air flow channel. The airflow enters through the air vent 12 and is heated by the heater 4 before entering the inner cavity of the heat preservation chamber.

[0020] Example 3, please refer to Figure 4 Based on Embodiment 1, an air knife 2 is installed on the lidar mounting cover 8, and a lidar 1 is installed on the mounting base 10. The lidar 1 is located inside the air knife 2. The air knife 2 adopts a rectangular air knife structure, and its air outlet is located at the detection end of the lidar 1. It should be noted that the selection of the air knife 2 can be matched with the lidar 1. In actual production, the shape of the lidar 1 and the air knife is not limited.

[0021] In summary, when the self-cleaning device for lidar is in use, the power is connected via a line, and the temperature of the environment in which lidar 1 is used is detected by a temperature detector. When the temperature is below 0°C, the controller receives the signal and controls the heater 4 to start. The heater 4 is a heating fan, and the air inlet is located in the inner cavity of the installation chamber 9. The heater 4 heats the air, and the hot air is stored in the heat preservation chamber 7. As the airflow generated by the air pump 3 enters the air knife 2 through the main pipe 5, the hot air in the insulation chamber 7 enters the main pipe 5 through the branch pipe due to the difference in air pressure, and then follows the airflow into the air knife 2 to clean the surface of the lidar 1. The hot air is used to clean the frost and snow on the surface of the lidar 1. When the temperature is above 0℃, the heater 4 does not start. The air enters the installation chamber 9 through the filter device 6 and is pressurized by the air pump 3. The airflow generated by the air pump 3 directly cleans the surface of the lidar 1 through the air knife 2, cleaning the rain, dust and insect webs on the surface of the lidar 1.

[0022] It should be noted that the cleaning process cannot completely guarantee that the air knife 2 can completely remove the dust from the surface of the lidar 1. Some stubborn impurities still need to be manually cleaned periodically. This cleaning device can remove most of the dust from the surface of the lidar 1, thereby reducing the possibility that frost, dew, snow, dust, insect webs and other stains will affect the performance of the lidar. All electrical equipment is powered by an external power supply.

[0023] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning device for a laser radar, comprising a laser radar mounting cover (8), a laser radar (1), characterized in that: The lidar mounting cover (8) is equipped with an insulation chamber (7), a mounting chamber (9), and a mounting base (10). The mounting chamber (9) is equipped with an air pump (3) and a heater (4) in its inner cavity. The lidar mounting cover (8) is equipped with an air knife (2), and the mounting base (10) is equipped with a lidar (1). The lidar (1) is located inside the air knife (2).

2. A self-cleaning device for a lidar according to claim 1, characterized in that: The output shaft of the air pump (3) is connected to a main pipe (5), and a branch pipe is connected to the main pipe (5), which extends into the insulation chamber (7). One end of the main pipe (5) is connected to the air knife (2).

3. A self-cleaning device for a lidar according to claim 1, wherein: The lidar mounting cover (8) is equipped with a temperature detector and a controller. The controller is used to control the temperature detector, the air pump (3), and the heater (4).

4. The self-cleaning device for a lidar according to claim 1, wherein: The inner cavity of the mounting base (10) is connected to the inner cavity of the mounting chamber (9), and an air inlet is provided at the bottom of the lidar mounting cover (8) and below the mounting base (10), and a filter device (6) is installed on the air inlet.

5. A self-cleaning device for lidar according to claim 4, characterized in that: The filtration device (6) is a filter screen.

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