KR20170126136A - Apparatus for preventing pollution of sensor equipped at outside of moving body - Google Patents

Abstract

A device for preventing pollution of a sensor mounted on the outside of a moving body according to the present invention comprises: a sensor mounted on the outside of the moving body; an air current generating part generating an air current around the sensor; and an air supplying part supplying the air to the air current generating part. The air current generating part can form a descending current of the air so as to prevent foreign substances included in the air flowing toward the sensor as the moving body drives from being attached to the sensor or so as to remove the foreign substances attached to the sensor. According to embodiments of the present invention, the device for preventing pollution of a sensor mounted on the outside of a moving body can prevent the foreign substances from being attached to a surface of the sensor due to strong air current.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for preventing contamination of a moving object external mounting sensor,

The present invention relates to a sensor for preventing contamination of a sensor, and more particularly, to a sensor for preventing contamination of a moving object such as a vehicle or a construction machine mounted on the outside of a moving object, To a sensor for preventing contamination of the sensor.

Currently, vehicles such as passenger cars, construction machines, etc. mostly use video devices to understand the environmental information of the surrounding vehicles. However, the driving information that can be obtained only by the video device information is very limited. In order to solve these problems, recently, a radar sensor is used in combination with a video device, or environment information of a vehicle under running is acquired using a LIDAR sensor, which is more expensive than a radar sensor.

In recent years, sensors and sensors have been applied to acquire three-dimensional environmental information on the periphery of a vehicle and on a moving route as technologies for intelligent and unattended operation of vehicles and construction machines have been developed. At this time, since the sensor is mounted while being exposed to the outside of the vehicle, foreign matter such as earth, insect, etc. is attached to the surface of the sensor at the time of moving and working of the vehicle. If the foreign matter adheres to the surface of the sensor, the value measured by the sensor becomes unreliable, and the sensor does not recognize the surrounding environment itself.

Conventionally, a transparent front window (or a transmission window) is mounted on the front surface of the sensor to prevent foreign matter from being directly attached to the sensor, or the foreign object attached to the surface of the sensor is directly removed by the driver.

However, if a transparent window or the like is formed on the front surface of the sensor, an error occurs in the measured value of the sensor, so that it is not applicable to a sensor that requires precise distance measurement.

The present applicant has proposed the present invention in order to solve the above problems, and as prior art documents related thereto, Japanese Patent Application Laid-Open No. Hei 5-87580 (entitled " The date of publication: November 26, 1993).

It is an object of the present invention to provide a contamination prevention device for a mobile body external mounting sensor mounted on the outside of a moving body such as a vehicle or a construction machine and capable of preventing the contamination of the sensor surface by forming an air current around a sensor will be.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

The above object is achieved according to the present invention by a sensor mounted on the outside of a moving body; An airflow generating unit for generating airflow around the sensor; And an air supply unit for supplying air to the airflow generating unit; Wherein the airflow generating unit is mounted on a moving body that prevents a foreign body contained in air flowing toward the sensor from being attached to the sensor as the moving body travels or forms a downward flow to remove foreign substances adhered to the sensor This is accomplished by a contamination prevention device of the sensor.

The intensity, speed, or injection direction of the airflow generated by the airflow generator may be adjusted according to the speed of the moving body.

The airflow generating unit may include a hood formed on the lower surface of the sensor and having a plurality of ejection holes for ejecting air toward the periphery of the sensor; And a hood supporter connected to the hood to support the hood so as to be positioned above the sensor.

Wherein the ejection hole includes: an outer ejection hole formed in a rear surface of the hood to be close to an edge of the hood; And an inner ejection hole formed on a rear surface of the hood so as to be positioned closer to the center of the hood than the outer ejection hole.

The outer spray holes are formed such that air is sprayed vertically downward, and the inner spray holes are formed such that air is sprayed toward the sensor.

The hood may be formed to have a streamlined shape in which a front portion of the sensor protrudes more than a rear portion of the sensor so as to cover the upper end of the sensor.

The air supply unit may supply the air to the airflow generating unit through any one of a hydraulic device or an air tank that is interlocked with or provided separately from the air conditioner provided in the moving body.

The air supply unit may include an air filter for removing foreign matter from the supplied air; And a temperature regulator for regulating the temperature of the supplied air.

And a sensor mounting portion for supporting the lower end of the sensor to fix the sensor to the moving object, wherein the sensor mounting portion can reduce or absorb vibration transmitted to the sensor by the moving object.

The sensor mounting portion may have an inclined outer surface in the up-and-down direction so that the sensor mounting portion has a trapezoidal shape in a vertical direction, and at least one drain hole may be provided in the sensor mounting portion.

The hood supporter may be provided with a channel connecting the ejection hole of the hood and the supply unit.

The sensor may be a LIDAR sensor or a RADAR sensor.

The hood may be provided with an ejection angle adjusting unit for adjusting the ejecting direction of the inner ejection holes or the outer ejection holes.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to prevent foreign substances from adhering to the surface of a sensor due to a strong air flow formed around the sensor.

In addition, according to the present invention, even if a sensor for measuring a distance or the like is contaminated by a foreign substance or the like, it is possible to remove foreign matter adhered through an air current formed around the sensor.

Further, the contamination prevention device for a moving object external mounting sensor of the present invention does not require the driver to stop the operation of the vehicle in order to remove the foreign matter adhered to the sensor, thereby improving the working efficiency of the vehicle.

In addition, since the direction or strength of airflow can be adjusted according to the traveling speed of the moving object, the contamination prevention device of the moving object external mounting sensor of the present invention can keep the measurement reliability of the sensor constant regardless of the traveling speed of the moving object.

1 is a view showing a state where a contamination prevention device of a moving object external mounting sensor is mounted on a vehicle according to an embodiment of the present invention.
Fig. 2 is a view for explaining the contamination prevention device of the moving object external mounting sensor shown in Fig. 1. Fig.
Fig. 3 is a view showing a rear surface of the hood of the airflow generating unit shown in Fig. 2. Fig.
4 is a configuration diagram of a contamination prevention device for a moving object external mounting sensor according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures are shown exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. And to the same structure, element or component appearing in more than one drawing, the same reference numerals are used to denote similar features.

The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the drawings are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a contamination prevention device 100 (hereinafter, referred to as a "pollution prevention device") of a moving object external mounting sensor according to an embodiment of the present invention will be described with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a state where a contamination prevention device for a mobile body external mounting sensor is mounted on a vehicle according to an embodiment of the present invention; Fig. 2 is a view for explaining a contamination prevention device for a mobile body external mounting sensor shown in Fig. 1 FIG. 3 is a rear view of the hood of the airflow generating unit shown in FIG. 2, and FIG. 4 is a block diagram of a contamination preventing device for a moving object external mounting sensor according to an embodiment of the present invention.

1 to 4, the contamination prevention apparatus 100 according to an embodiment of the present invention includes a sensor 110 mounted on the outside of the moving object 1, an air flow generated around the sensor 110 And an air supply unit 130 for supplying air to the airflow generating unit 120. The airflow generating unit 120 includes an air supply unit 130,

The anti-fouling apparatus 100 according to an embodiment of the present invention is an apparatus for preventing contamination of a sensor mounted on the outside of a moving vehicle traveling at a predetermined speed, such as a vehicle, a construction machine, or a moving machine. Hereinafter, a case where the contamination prevention device 100 is mounted on a vehicle will be described as an example for convenience of explanation.

Referring to FIG. 1, a contamination prevention apparatus 100 according to an embodiment of the present invention generates a downward air stream (air curtain) around a sensor 110 mounted on the outside of a moving vehicle 1 So that contaminants such as dust, mist, water vapor, rainwater, snow, insects, etc., which may be adhered to the surface of the sensor 110 by the traveling of the moving body 1, are removed by the downward current or air curtain, To prevent contamination.

Here, the intensity or direction of the foreign matter blocking / removing air flow B (see FIG. 2) generated around the sensor 110 may vary according to the speed of the moving object 1. For example, if the speed of the moving object 1 is increased, the strength of the foreign matter blocking / removing airflow B generated in the periphery of the sensor 110 is increased. If the speed of the moving object 1 is slowed, The intensity of the foreign matter blocking / removing airflow B generated in the foreign matter blocking / removing airflow B can also be reduced. When the traveling speed of the moving body 1 is high, the direction of spraying is adjusted so that the foreign matter blocking / removing airflow B generated around the sensor 110 is jetted in a direction away from the sensor 110, The injection direction can be adjusted so that the foreign matter blocking / removing airflow B generated in the vicinity of the sensor 110 is sprayed in a direction approaching the sensor 110. [ At this time, the structure for controlling the injection direction of the foreign matter blocking / removing airflow B will be described later.

On the other hand, the sensor 110 mounted on the outside of the moving object 1 is a sensor for grasping the surrounding information of the moving object 1 while traveling or in operation. For example, the sensor 110 may be a distance measuring sensor for acquiring three-dimensional environment information on the moving object and the moving path for realizing the intelligent / unmanned state of the moving object 1 such as a vehicle or a construction machine.

The sensor 110 is preferably mounted on the upper end of the outer surface of the mobile unit 1 so as not to interfere with the driver's view because the sensor 110 is used for grasping the environment information of the mobile unit 1 during movement or operation using a laser or the like.

The sensor 110 is mounted on the outside of the moving object 1 and generates a sensing signal for measuring the distance between the moving object 1 and the surrounding object during movement and operation and transmits the sensing signal to the moving object 1, Can be measured. In this case, the sensor 110 according to an embodiment of the present invention may be provided with either a LIDAR sensor or a RADAR sensor. The Lidar sensor and the radar sensor refer to a wide range distance sensor or the like for measuring a distance on the periphery of the moving object 1 from 180 degrees to 360 degrees and can be generally provided in a cylindrical shape like a cylinder. Lidar sensors and radar sensors are expensive, but they are robust to environmental factors and have high accuracy.

Referring to FIGS. 1 and 2, the airflow generating unit 120 is a component that generates a downward air stream or an air curtain around the sensor 110. In other words, the airflow generating unit 120 may blow air to generate the foreign matter blocking / removing airflow B in the vicinity of the sensor 110. The airflow generating portion 110 may include a hood 122 and a hood supporting portion 126.

It is preferable that the airflow generating part 120 is provided in a form to cover the upper part of the sensor 110 and is provided so as to cover the front side of the sensor 110 with respect to the traveling direction of the moving object 1. [ The airflow generating unit 120 may be spaced apart from the upper end of the sensor 110 by a predetermined distance.

1 through 3, the hood 122 of the airflow generating unit 120 is located on the upper side (or the upper side) of the sensor 110 and covers the upper end of the sensor 110, The air can be blown toward the periphery of the air blower, or a downward airflow can be generated. It is preferable that the hood 122 is formed larger than the outer surface of the sensor 110 in the vertical direction and is formed in a streamlined shape in which the front portion of the sensor 110 protrudes more than the rear portion of the sensor 110. This is because foreign substances such as dust, snow, rain, etc. are splashed from the four sides of the sensor 110 mounted on the moving body 1. If the hood 122 is formed to be smaller than the sensor 110, it is difficult to prevent foreign matter from adhering to the front surface of the sensor 110. On the contrary, when the periphery of the hood 122 is formed to be larger than the circumference of the height direction of the sensor 110, it is possible to prevent direct contact and collision with foreign matter falling toward the upper surface of the sensor 110.

In addition, the airflow A generated when the moving object 1 is moved in the front of the sensor 110 is blown in proportion to the traveling speed of the moving object 1, and the airflow A generated when the moving object moves is dust, There is a possibility that a large amount of foreign matter such as snow, rain, etc. may be contained. Therefore, since the hood 122 must be formed so as to form more foreign matter blocking / removing airflow B in front of the sensor 110 on the basis of the sensor 110, the hood 122 is longer than the rear Or formed in a streamlined shape so as to protrude more.

Meanwhile, a plurality of ejection holes may be provided on the lower surface (back surface) of the hood 122 to eject air to the sensor 110 or to form a foreign matter blocking / removing airflow B. At this time, the ejection hole provided in the hood 122 may prevent foreign matter from adhering to the sensor 110 or remove foreign matter adhered to the sensor 110. [

2 and 3, the ejection holes are formed on the back surface of the hood 122 so as to be close to the edge of the hood 122 and have external ejection holes 123a and 123b for preventing foreign matter from adhering to the sensor 110. [ And inner spray holes 124a and 124b formed on the rear surface of the hood 122 to be positioned near the center of the hood 122 to remove foreign matter adhered to the sensor 110. [

2, air can be blown vertically downward so that foreign matter blocking / removing airflow B is formed along the outer surface of the hood 122, that is, around the periphery. At this time, the outer spray holes 123a and 123b form a foreign matter blocking / removing air flow B falling downward by blowing air vertically downward, and the foreign matter blocking / removing air flow B moves The foreign object is attached to the sensor 110 by blocking the airflow A generated, that is, the airflow A generated when the moving object moves while colliding with the airflow blown to the sensor 110 according to the progress of the moving object 1 Can be prevented. Therefore, it is preferable that the outer ejection holes 123a and 123b are formed in the vertical direction.

The inner spray holes 124a and 124b are formed inside the hood 122 rather than the outer spray holes 123a and 123b so that air can be sprayed toward the sensor 110. [ At this time, the inner ejection holes 124a and 124b may be formed obliquely toward the sensor 110 rather than in a vertical direction. The air blown out from the inner spray holes 124a and 124b is directed to the sensor 110 and the foreign matter blocking / removing airflow B is formed by the air blown toward the sensor 110, So that the foreign matter attached to the sensor 110 can be removed.

The number of the outer discharge holes 123a and the inner discharge holes 124a provided at the front of the hood 122 protrudes from the outer discharge holes 123b and the inner discharge holes 123a provided at the rear of the hood 122 124b. This is because the airflow A generated at the time of moving the moving object 1 is blown in a direction substantially proportional to the traveling speed of the moving object 1 in front of the sensor 110 and the airflow A generated at the time of moving the moving object is dust, There is a possibility that a large amount of foreign substances such as rain may be included. If the number of the outer blowing holes 123a and the number of the inner blowing holes 124a are not sufficiently formed in front of the sensor 110 and the airflow A blowing in the same direction as the moving direction of the moving body 1 can not be canceled If the foreign matter blocking / removing airflow B of the intensity is formed through the external discharge hole 123a and the internal discharge hole 124a, the foreign matter is adhered directly to the front of the sensor 110, Is difficult to properly detect the environment around the mobile device 1. [ For this reason, it is preferable that the number of the ejection holes 123a, 124a formed in front of the hood 122 is larger than the number of ejection holes formed at the rear side.

Although not shown in the drawing, a spray angle adjusting unit (not shown) for adjusting the spray direction of the outer spray holes 123a and 123b and the inner spray holes 124a and 124b may be formed. The spraying angle adjusting unit (not shown) interlocks with the speed sensor 2 (see FIG. 4) of the moving object 1 to adjust the jetting angle of the moving object 1 to the outer jetting holes 123a and 123b and the inner jetting holes 124a, 124b. For example, when the traveling speed of the moving object 1 is fast, the spray angle of the outer spray holes 123a, 123b and the inner spray holes 124a, 124b is adjusted so that they are sprayed in the direction away from the sensor 110, Can be adjusted. That is, as the traveling speed of the moving object 1 increases, the intensity of the airflow A generated when the moving object 1 moves increases. Therefore, in order to cancel the flow of the airflow A, the outer discharge holes 123a, 123b and the inner discharge holes 124a, Removing flow B is directed in a direction away from the sensor 110. The foreign matter blocking / For reference, the spray angle adjusting unit (not shown) may be provided as a mechanical spray angle adjusting unit having a spring or an electronic spray angle adjusting unit.

The hood support portion 126 is a portion that connects the hood 122 and supports the hood 122 so that the hood 122 is positioned on the upper portion of the sensor 110. [ In other words, one side of the hood support part 126 is connected to the sensor mounting part 140 supporting the sensor 110 and the other side is connected to the hood 122 so that the hood 122 is positioned above the sensor 110 The hood 122 can be supported.

In addition, the hood support portion 126 may connect the hood 122 and the air supply portion 130. That is, the hood 122 and the air supply unit 130 may be connected to each other through the hood support unit 126. For this purpose, a flow path 127 may be formed in the hood support portion 126. The flow path 127 formed in the hood support portion 126 transfers the air supplied from the air supply portion 130 to the hood 122 so that the hood 122 can discharge the air toward the sensor 110.

The hood supporter 126 may be formed in a thin column shape and the hood supporter 126 may be formed of a plurality of pillars according to the shape and size of the hood 122. For reference, the shape of the hood supporter 126 is not limited to a pillar shape, but may be modified into various shapes as necessary.

Referring to FIGS. 2 and 4, the air supply unit 130 supplies air to the airflow generating unit 120. Specifically, the air supply unit 130 supplies air from a hydraulic device or an air tank formed separately from the air conditioner or the air conditioner provided inside the mobile unit 1, To the hood 122.

Meanwhile, the air supply unit 130 may include an air filter 132 for removing foreign substances contained in the supplied air, and a temperature controller 134 for controlling the temperature of the supplied air.

Further, the air supply unit 130 can be interlocked with the speed sensor 2 of the moving object 1. In other words, in order to adjust the injection speed or intensity of the foreign matter blocking / removing airflow B generated by the air ejected according to the running speed of the moving object 1, The air supply amount, the supply speed, and the like can be adjusted in cooperation with the air conditioner 2. For example, when the speed of the moving object 1 sensed by the speed sensor 2 is fast, the air supply unit 130 increases the amount of supplied air or speeds up the supply speed of air. As a result, the speed or flow rate of the air blown out from the airflow generating unit 120 is increased, the speed of the foreign matter blocking / removing airflow B generated around the sensor 110 is further increased, 110 can be effectively prevented from being adhered to each other.

1 and 2, the contamination prevention apparatus 100 according to an embodiment of the present invention may further include a sensor mounting unit 140 for fixing the sensor 110 to the moving object 1.

The sensor mounting portion 140 is for fixing the sensor 110 to the mobile body 1. The sensor mounting portion 140 may be fixed to the outer surface of the moving body 1 while supporting the lower end of the sensor 110.

The sensor mounting portion 140 can reduce vibration (high frequency vibration) transmitted from the moving object 1 to the sensor 110 when the sensor 110 is fixedly mounted on the moving object 1. [ For this purpose, it is preferable that the sensor mounting portion 140 is formed of a material capable of absorbing vibration such as rubber, spring, etc., and the sensor mounting portion 140 may be a kind of damper.

The sensor mounting part 140 may be provided to support the lower end of the sensor 110 and may be inclined so as to be enlarged from the upper end to the lower end. In other words, the sensor mounting portion 140 may have an inclined outer surface in the up-and-down direction so that the sensor mounting portion 140 has a trapezoidal cross-sectional shape in the vertical direction.

Since the outer surface of the sensor mounting portion 140 has an inclined shape, the foreign matter blocking / removing airflow B generated by the air ejected from the airflow generating portion 120 moves along the inclined outer surface of the sensor mounting portion 140 It can pass smoothly.

Also, at least one drain hole 142 may be provided in the sensor mounting portion 140. Foreign matter such as snow or rain that is contained in the airflow A generated when the moving object 1 is moved through the drain hole 142 or attached to the sensor 110 may be discharged to the outside. In other words, if foreign substances such as snow, rain, dust, and the like attached to the sensor 110 are removed by the airflow generating unit 120 and flowed down from the surface of the sensor 110, the sensor mounting unit 140 To be discharged to the outside. At this time, the drain hole 142 according to an embodiment of the present invention is preferably formed over the entire sensor mounting portion 140, but is not limited thereto and may be formed in only a part of the sensor mounting portion 140.

Referring to Figs. 1 to 4, the operation of the contamination prevention apparatus 100 of the moving object external mounting sensor according to an embodiment of the present invention will be briefly described.

When the driver turns on the starting of the movable body 1, the air supply unit 130 is operated. However, the air supply unit 130 may not be operated according to the operation of the driver.

Then, the speed sensor 2 of the moving body 1 senses the speed of the moving body 1. Then, At this time, if the speed of the moving object 1 is faster than the predetermined reference speed, the speed of the air supplied from the air supply unit 130 is increased or a large amount of air is supplied to the airflow generation unit 120, The speed of the air supplied from the air supply unit 130 is slowed or a small amount of air is supplied to the airflow generation unit 120 when the speed of the air supply unit 130 is slower than the preset reference speed.

Then, the airflow generating unit 120 sprays the air supplied from the air supplying unit 130 to the periphery of the sensor 110. [ And the foreign matter blocking / removing airflow B is generated around the sensor 110 by the jetted air. Accordingly, the foreign matter blocking / removing air flow B can prevent foreign matter from adhering to the sensor 110, and can easily remove the foreign matter adhered even if foreign matter adheres thereto. Meanwhile, the velocity of the foreign matter blocking / removing airflow B formed around the sensor 110 varies according to the velocity of the air blown out.

At this time, the speed of the air blown to the periphery of the sensor 110 may be adjusted by using a separate device according to the driver's judgment, or the blowing angle adjusting unit (not shown) provided in the hood 122 may be adjusted, 120 can be controlled by adjusting the angle of ejection of the air. Further, the driver may determine the temperature and the environment around the vehicle, and adjust the temperature of the supplied air using the temperature controller 134. [

According to the above-described configuration, the foreign object prevention apparatus 100 of the moving object external mounting sensor according to the embodiment of the present invention can prevent foreign matter from adhering to the surface of the sensor due to strong air flow formed around the sensor.

In addition, according to an embodiment of the present invention, even if a sensor for measuring a distance or the like is contaminated by a foreign substance or the like, the foreign object attached through the air current formed around the sensor can be removed .

Furthermore, since the fouling prevention apparatus 100 of the moving object external mounting sensor according to the embodiment of the present invention does not require the driver to stop the operation of the vehicle in order to remove the foreign substances attached to the sensor, .

In addition, according to an embodiment of the present invention, the contamination prevention device for a moving object external mounting sensor can adjust the airflow direction or intensity according to the traveling speed of the moving object, so that the measurement reliability of the sensor is constant regardless of the traveling speed of the moving object .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: Pollution prevention device of external mounting sensor of moving object
110: sensor
120: Airflow Generator 122: Hood
123a, 123b: outer ejection holes 124a, 124b: inner ejection holes
126: hood support part 127:
130:
132: air filter 134: thermostat
140: sensor mounting part 142: drain hole
A: Air flow generated when moving object
B: foreign substance blocking / removing air flow

Claims (13)

A sensor mounted on the outside of the moving body;
An airflow generating unit for generating airflow around the sensor; And
An air supply unit for supplying air to the airflow generating unit;
/ RTI >
Wherein the airflow generating unit forms a downward flow to prevent foreign matter contained in air flowing toward the sensor from adhering to the sensor or to remove foreign matter adhered to the sensor as the moving body travels, Sensor pollution prevention device.
The method according to claim 1,
Wherein the intensity, velocity, or injection direction of the airflow generated by the airflow generator is adjusted according to the velocity of the moving object.
3. The method of claim 2,
The airflow generating unit
A hood disposed at an upper portion of the sensor and having a plurality of ejection holes formed at the lower surface thereof for ejecting air toward the periphery of the sensor; And
And a hood supporter connected to the hood to support the hood so that the hood is positioned at an upper portion of the sensor.
The method of claim 3,
The spray hole
An outer ejection hole formed in a rear surface of the hood to be close to an edge of the hood; And
And an inner ejection hole formed on a rear surface of the hood so as to be positioned closer to the center of the hood than the outer ejection hole.
5. The method of claim 4,
Wherein the outer spray hole is formed such that air is sprayed vertically downward, and the inner spray hole is formed such that air is sprayed toward the sensor.
6. The method of claim 5,
The hood,
Wherein the sensor is formed so as to have a streamlined shape in which a front portion of the sensor is protruded more than a rear portion of the sensor so as to cover the upper end of the sensor, .
The method according to claim 1,
The air-
Wherein the air supply unit supplies air to the airflow generating unit through one of a hydraulic device or an air tank provided in the air conditioner provided in the mobile unit or separately provided.
8. The method of claim 7,
The air-
An air filter for removing foreign matter from the supplied air; And
And a temperature controller for controlling the temperature of the supplied air.
The method according to claim 1,
And a sensor mounting portion for supporting a lower end of the sensor to fix the sensor to a moving body,
Wherein the sensor mounting portion reduces or absorbs vibration transmitted to the sensor by the moving body.
10. The method of claim 9,
Wherein the sensor mounting portion is inclined in the vertical direction so that a vertical cross-sectional shape of the sensor mounting portion becomes a trapezoidal shape,
Wherein the sensor mounting portion is provided with at least one drain hole.
The method of claim 3,
Wherein the hood support portion is provided with a flow path connecting the blow hole of the hood and the supply portion.
The method according to claim 1,
The sensor includes:
Wherein the sensor is provided with any one of a LIDAR sensor and a RADAR sensor.
5. The method of claim 4,
In the hood,
Wherein an injection angle adjusting unit for adjusting an injection direction of the inner spray hole or the outer spray hole is formed.

Images