Laser radar skylight self-cleaning device
By integrating the air curtain control unit, wiper spray unit and cross-flow hot air blowing unit on the lidar sunroof, combined with automatic control of sensors, the problem of automatic cleaning of the sunroof in high humidity or cold weather is solved, and the automatic self-cleaning of the lidar is realized , ensuring the stability and data integrity of signal reception.
Patent Information
- Application Number
- CN202420341258.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-02-23
AI Technical Summary
Lidar sunroof is easily covered by dew, frost or dust in high humidity or cold weather, resulting in the inability to receive beam scattering and echo signals. The existing technology requires manual maintenance and cleaning, and cannot achieve automated self-cleaning.
A lidar sunroof self-cleaning device including an air curtain control unit, a wiper spray unit and a cross-flow hot blowing unit is designed. The air curtain control unit is used to reduce humidity, the wiper spray unit sprays cleaning liquid and remove dust, and cross-flow hot blowing air is used. The unit is dried, and the temperature and humidity sensor and rain sensor are combined to automatically control the work of each unit.
Automatic cleaning of lidar sunroof is realized, manual maintenance is avoided, normal operation is ensured under different weather conditions, and detection blind spots and data loss is reduced.
Smart Images
Figure CN222343554U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of meteorological monitoring laser radar, and in particular relates to a laser radar skylight self-cleaning device. Background Art
[0002] At present, the skylights used by laser radars are basically ordinary glass lenses or coated anti-reflection glass installed on the flange. This type of skylight basically meets the needs of radar external detection, but it is necessary to manually clean and wipe the skylight glass regularly. In high humidity or cold weather, the outer glass of the skylight will be covered with dew or frost, and the water vapor on the inside of the skylight will liquefy and form condensed water, or even freeze to form ice flowers, causing serious scattering of the laser radar beam, and the echo signal cannot be fully received, resulting in a large detection blind area or even unable to collect data; similarly, dust deposition, leaves, grass seeds and even bird droppings in the air will inevitably fall on the skylight glass, affecting the normal operation of the laser radar. In response to the above problems, most companies in the industry use engineers to maintain and clean the existing skylights on site, and some companies use the wiper spray assembly working procedure, which requires manual judgment of the cleanliness of the skylight glass and then issue control instructions. For condensed water or ice flowers generated on the inside of the skylight glass due to the temperature difference between the inside and the outside, since the laser radar beam needs to penetrate the glass, it is usually only possible to heat the inside of the skylight glass along the periphery with a heating plate to increase the temperature. Therefore, a laser radar skylight self-cleaning device is urgently needed. Utility Model Content
[0003] In view of the above problems, the utility model discloses a laser radar sunroof self-cleaning device, which includes an air curtain control unit, a wiper spray unit and a cross-flow hot air blowing unit;
[0004] The air curtain control unit is installed on the inner side of the laser radar skylight, and the wiper spray unit and the cross-flow hot air blowing unit are installed on the outer side of the laser radar skylight;
[0005] The air curtain control unit comprises a circular air outlet pipe and an air curtain flange air storage chamber. The circular air outlet pipe is evenly provided with air outlet holes, and the directions of the air outlet holes are all toward the center position of the circular air outlet pipe.
[0006] Further, the wiper spray unit includes a wiper assembly;
[0007] The wiper assembly comprises a rotating motor and a wiper, one end of the wiper is fixed to the output end of the rotating motor;
[0008] The output end of the rotating motor is fixed to one side of the circular air outlet pipe, and the length of the wiper is greater than the diameter of the circular air outlet pipe.
[0009] Furthermore, the wiper spray unit further comprises a spray assembly, and the spray assembly comprises a cleaning liquid storage tank and a foam spray head;
[0010] The foam nozzle and the output end of the rotating motor are symmetrical about the center of the circular air outlet pipe, and the foam nozzle faces the area where the circular air outlet pipe is located;
[0011] The foam nozzle is connected to the cleaning liquid storage tank via an air pump, and the foam nozzle sprays cleaning liquid toward a front fan-shaped area.
[0012] Furthermore, the cross-flow hot air blowing unit includes an air outlet duct, a heater and an air pump;
[0013] The air outlet of the air outlet duct is located outside the laser radar skylight, and the heater and the air pump are arranged in the air outlet duct in sequence.
[0014] Furthermore, the air outlet of the air outlet duct is in an arc shape, wherein the curvature of the arc shape is the same as the curvature of the circular air outlet duct.
[0015] Furthermore, the self-cleaning device further includes a first temperature and humidity sensor, a second temperature and humidity sensor, a rain sensor and a master control unit, wherein the first temperature and humidity sensor is installed on the outside of the laser radar skylight, and the second temperature and humidity sensor and the rain sensor are installed on the inside of the laser radar skylight;
[0016] The first temperature and humidity sensor, the second temperature and humidity sensor and the rainfall sensor are connected to the main control unit, and the main control unit is connected to the air curtain control unit, the wiper spray unit and the cross-flow hot blowing unit, and is used to control the switch and power of the air curtain control unit, the wiper spray unit and the cross-flow hot blowing unit.
[0017] Furthermore, the air curtain control unit, the wiper spray unit and the cross-flow hot air blowing unit all include solenoid valves, and the main control unit is connected to the solenoid valves, and the air curtain control unit, the wiper spray unit and the cross-flow hot air blowing unit are controlled by the solenoid valves.
[0018] The utility model has the advantage of being able to automatically clean the skylight glass of the laser radar.
[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A front view of the laser radar skylight self-cleaning device according to the utility model is shown;
[0022] Figure 2 A top view of a laser radar skylight self-cleaning device according to an embodiment of the utility model is shown;
[0023] Figure 3 The structure diagram of the air curtain control unit according to the implementation of the utility model is shown.
[0024] In the figure: 1. Skylight; 2. Circular air outlet duct; 3. Air curtain control unit; 4. Wiper spray unit; 5. Foam nozzle; 6. Spray assembly; 7. Air outlet duct; A. Air curtain flange air storage chamber. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.
[0026] like Figure 1-3 As shown, the utility model discloses a laser radar sunroof self-cleaning device, which includes an air curtain control unit 3, a wiper spray unit and a cross-flow hot air blowing unit;
[0027] The air curtain control unit 3 is installed inside the laser radar skylight 1, and the wiper spray unit and the cross-flow hot air blowing unit are installed outside the laser radar skylight 1;
[0028] The air curtain control unit 3 includes a circular air outlet pipe 2 and an air curtain flange air storage chamber. The circular air outlet pipe 2 is evenly provided with air outlet holes, and the directions of the air outlet holes are all toward the center position of the circular air outlet pipe 2.
[0029] Specifically, the wiper spray unit is installed on the outside of the laser radar skylight 1, and is used to spray cleaning liquid to the skylight 1 and clean the skylight 1. The cross-flow hot air blowing unit is used to blow hot air to dry the outside of the skylight 1. The air curtain control unit 3 is installed inside the laser radar skylight 1. When the humidity inside the glass of the skylight 1 reaches a predetermined value, the air curtain control unit 3 starts to work, reduces the humidity in the air, and prevents the condensation of water vapor inside the skylight 1. Among them, the area where the circular air outlet duct 2 is located is the laser emission area of the laser radar and the receiving area of the echo signal, that is, the area where the laser radar interacts with the outside. The area must be kept clean and there must be no interference such as water mist. The air curtain flange air storage chamber introduces high-pressure air into the circular air outlet duct 2, and the high-pressure air is ejected from the air outlet of the circular air outlet duct 2, covering the entire area of the skylight 1 where the laser radar interacts with the outside, ensuring that the water vapor in the area is quickly dried, and preventing the formation of water mist in the area, or even condensing into ice flowers. Figure 3 A in the figure indicates the connected air curtain flange air storage chamber.
[0030] Further, the wiper spray unit includes a wiper assembly;
[0031] The wiper assembly comprises a rotating motor and a wiper, one end of the wiper is fixed to the output end of the rotating motor;
[0032] The output end of the rotating motor is fixed to one side of the circular air outlet pipe 2 , and the length of the wiper is greater than the diameter of the circular air outlet pipe 2 .
[0033] Specifically, the output end of the rotating motor is installed on one side of the circular air outlet pipe 2, and one end of the wiper is fixed on the output end of the rotating motor. Driven by the output end of the rotating motor, the wiper performs reciprocating motion in the area where the circular air outlet pipe 2 is located, and through the reciprocating motion, the dust and foreign matter on the laser radar skylight 1 are scraped off to keep the area clean. The length of the wiper is greater than the diameter of the circular air outlet pipe 2 so that the wiper can completely cover the area where the circular air outlet pipe 2 is located.
[0034] Furthermore, in order to deeply clean the outer side of the sunroof 1 and remove some stubborn stains such as bird droppings and gum that may not be cleaned by the wiper, the wiper spray unit further includes a spray assembly 6, which includes a cleaning liquid storage tank and a foam spray head 5;
[0035] The foam nozzle 5 and the output end of the rotating motor are symmetrical about the center of the circular air outlet pipe 2, and the foam nozzle 5 faces the area where the circular air outlet pipe 2 is located;
[0036] The foam nozzle 5 is connected to the cleaning liquid storage tank via an air pump, and the foam nozzle 5 sprays cleaning liquid toward a front fan-shaped area.
[0037] Specifically, the foam nozzle 5 is connected to the cleaning liquid storage tank through an air pump, and the cleaning liquid in the cleaning liquid storage tank is sprayed out through the foam nozzle 5 under the action of the air pump to form cleaning liquid foam, and the cleaning liquid foam covers the area of the circular air outlet pipe 2. Then the wiper assembly is used to deeply clean the area.
[0038] Furthermore, in order to quickly dry the outer side of the skylight 1 glass after deep cleaning, the self-cleaning device in this embodiment also includes a cross-flow hot air blowing unit, and after deep cleaning the outer side of the skylight 1, the cross-flow hot air blowing unit is used for rapid drying. The cross-flow hot air blowing unit includes an air outlet duct 7, a heater and an air pump;
[0039] The air outlet of the air outlet duct 7 is located outside the laser radar skylight 1, and the heater and the air pump are arranged in the air outlet duct 7 in sequence.
[0040] Specifically, the wind blown out by the air pump forms hot air after passing through the heater, and the hot air is blown toward the area where the circular air outlet duct 2 is located outside the skylight 1 through the air outlet of the air outlet duct 7, so as to quickly dry the area.
[0041] Preferably, the air outlet of the air outlet duct 7 is in an arc shape, wherein the curvature of the arc shape is the same as the curvature of the circular air outlet duct 2 .
[0042] Specifically, the arc-shaped air outlet can make the wind direction more concentrated, and the curvature of the arc is the same as the curvature of the circular air outlet duct 2. The hot air blown out by the arc-shaped air outlet can better clean the outside of the skylight 1.
[0043] Furthermore, the self-cleaning device further includes a first temperature and humidity sensor, a second temperature and humidity sensor, a rain sensor and a master control unit, wherein the first temperature and humidity sensor is installed on the outside of the laser radar skylight 1, and the second temperature and humidity sensor and the rain sensor are installed on the inside of the laser radar skylight 1;
[0044] The first temperature and humidity sensor, the second temperature and humidity sensor and the rainfall sensor are connected to the main control unit, and the main control unit is connected to the air curtain control unit 3, the wiper spray unit and the cross-flow hot blowing unit, and is used to control the switch and power of the air curtain control unit 3, the wiper spray unit and the cross-flow hot blowing unit.
[0045] Specifically, the first temperature and humidity sensor and the second temperature and humidity sensor are used to judge the weather outside the rain sensor skylight 1 and the temperature inside and outside the skylight 1. The master control unit controls the air curtain control unit 3, the wiper spray unit and the cross-flow hot air blowing unit based on the weather and temperature data.
[0046] For example,
[0047] 1. In rainy weather, the rainfall sensor is used to determine the rainfall amount, and continuous working signals are given to the cross-flow hot air blowing unit and the wiper assembly to keep the outer side of the sunroof 1 glass clean;
[0048] 2. In frosty and dewy weather, the first temperature and humidity sensor is used to determine the outdoor temperature and humidity changes, and intermittent working signals are given to the cross-flow hot air blowing unit and the wiper assembly to keep the outer side of the skylight 1 glass clean;
[0049] 3. In clear and dry weather, the first temperature and humidity sensor and the rainfall sensor have no signal output. The cross-flow hot air blowing unit and the wiper assembly work once at regular intervals to clean the outer side of the sunroof 1 glass once.
[0050] When the ambient temperature is below zero degrees Celsius, the second temperature and humidity sensor and the first temperature and humidity sensor determine that condensation, mist, ice and the like may form on the inside of the sunroof 1 due to the temperature difference, and the air curtain control unit 3 continues to work. Because the outdoor temperature is below zero degrees, the outside of the sunroof 1 may freeze due to rain or snow, so the cross-flow hot air blowing unit and the wiper assembly keep working intermittently to ensure that the glass outside the sunroof 1 is clean.
[0051] Furthermore, the air curtain control unit 3, the wiper spray unit and the cross-flow hot air blowing unit all include solenoid valves, and the main control unit is connected to the solenoid valves, and the air curtain control unit 3, the wiper spray unit and the cross-flow hot air blowing unit are controlled by the solenoid valves.
[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A laser radar skylight self-cleaning device, characterized in that: The self-cleaning device comprises an air curtain control unit (3), a wiper spray unit and a cross-flow hot air blowing unit; The air curtain control unit (3) is installed on the inner side of the laser radar skylight (1), and the wiper spray unit and the cross-flow hot air blowing unit are installed on the outer side of the laser radar skylight (1); The air curtain control unit (3) comprises a circular air outlet pipe (2) and an air curtain flange air storage chamber, the circular air outlet pipe (2) is evenly provided with air outlet holes, and the directions of the air outlet holes are all toward the center position of the circular air outlet pipe (2).
2. A laser radar skylight self-cleaning device according to claim 1, characterized in that: The wiper spray unit includes a wiper assembly; The wiper assembly comprises a rotating motor and a wiper, one end of the wiper is fixed to the output end of the rotating motor; The output end of the rotating motor is fixed to one side of the circular air outlet pipe (2), and the length of the wiper is greater than the diameter of the circular air outlet pipe (2).
3. A laser radar skylight self-cleaning device according to claim 2, characterized in that: The wiper spray unit further comprises a spray assembly (6), wherein the spray assembly (6) comprises a cleaning liquid storage tank and a foam spray head (5); The foam nozzle (5) and the output end of the rotating motor are symmetrical about the center of the circular air outlet pipe (2), and the foam nozzle (5) faces the area where the circular air outlet pipe (2) is located; The foam spray head (5) is connected to the cleaning liquid storage tank via an air pump, and the foam spray head (5) sprays cleaning liquid toward a front fan-shaped area.
4. A laser radar skylight self-cleaning device according to claim 3, characterized in that: The cross-flow hot air blowing unit comprises an air outlet duct (7), a heater and an air pump; The air outlet of the air outlet duct (7) is located outside the laser radar skylight (1), and the heater and the air pump are arranged in sequence in the air outlet duct (7).
5. A laser radar skylight self-cleaning device according to claim 4, characterized in that: The air outlet of the air outlet duct (7) is in the shape of an arc, wherein the curvature of the arc is the same as the curvature of the circular air outlet duct (2).
6. The laser radar skylight self-cleaning device according to claim 1, characterized in that: The self-cleaning device further comprises a first temperature and humidity sensor, a second temperature and humidity sensor, a rainfall sensor and a master control unit, wherein the first temperature and humidity sensor is mounted on the outside of the laser radar skylight (1), and the second temperature and humidity sensor and the rainfall sensor are mounted on the inside of the laser radar skylight (1); The first temperature and humidity sensor, the second temperature and humidity sensor and the rainfall sensor are connected to the master control unit, and the master control unit is connected to the air curtain control unit (3), the wiper spray unit and the cross-flow hot air blowing unit, and is used to control the switch and power of the air curtain control unit (3), the wiper spray unit and the cross-flow hot air blowing unit.
7. A laser radar skylight self-cleaning device according to claim 6, characterized in that: The air curtain control unit (3), the wiper spray unit and the cross-flow hot air blowing unit all include electromagnetic valves, and the master control unit is connected to the electromagnetic valves to control the air curtain control unit (3), the wiper spray unit and the cross-flow hot air blowing unit through the electromagnetic valves.