阅读说明：本技术 激光雷达组件 (Laser radar assembly ) 是由 丁思奇 陈思宏 丁海鹏 钟义晖 纪淑花 于 2020-07-28 设计创作，主要内容包括：本发明公开了一种激光雷达组件,包括：激光雷达,所述激光雷达包括视窗部；第一防护板和第二防护板,所述第一防护板和所述第二防护板分别设于所述视窗部的上端和下端,所述第一防护板和所述第二防护板分别向外凸出于所述视窗部所在表面。根据本发明实施例的激光雷达组件,通过在激光雷达的视窗部设置第一防护板和第二防护板,可以对激光雷达的视窗部进行保护,防止外部飞溅物击打市场部,还可以防止外部杂散光和扬尘对视窗部的影响。(The invention discloses a laser radar component, comprising: a lidar including a window portion; first guard plate and second guard plate, first guard plate with the second guard plate is located respectively the upper end and the lower extreme of window portion, first guard plate with the second guard plate respectively outside protrusion in window portion place surface. According to the laser radar component provided by the embodiment of the invention, the first protection plate and the second protection plate are arranged on the window part of the laser radar, so that the window part of the laser radar can be protected, external splashes are prevented from hitting the market part, and the influence of external stray light and dust on the window part can be prevented.)

1. A lidar assembly, comprising:

a lidar including a window portion;

first guard plate and second guard plate, first guard plate with the second guard plate is located respectively the upper end and the lower extreme of window portion, first guard plate with the second guard plate respectively outside protrusion in window portion place surface.

2. The lidar assembly of claim 1, wherein the first guard plate and the second guard plate are each flat plates.

3. The lidar assembly of claim 2, wherein the first guard plate and the second guard plate are parallel to each other.

4. The lidar assembly of claim 1, wherein the first guard plate and/or the second guard plate comprises a bullet-proof glass material.

5. The lidar assembly of claim 1, wherein a minimum value of a vertical distance between the free end of the first fender panel and the window portion is L0, wherein L0 ═ x0-x1|, and x0 and x1 are given by the following relationships:

wherein α is an angle of the external spatter, y is a vertical movement distance of the external spatter, x is a lateral movement distance of the external spatter, v₀Is the initial velocity of the external spatter.

6. The lidar assembly of claim 2, wherein a vertical distance between the free end of the first shielding plate and a surface of the window portion is L, and L is greater than or equal to L0.

7. The lidar assembly of claim 1, wherein the first guard plate and the second guard plate protrude outwardly beyond the surface of the window portion by an equal distance.

8. The lidar assembly of claim 1, wherein the lidar includes a cylindrical bottom housing, the window portion is cylindrical and is disposed above the bottom housing, the first protective plate is disc-shaped, and the second protective plate is ring-shaped and is disposed at a junction of the window portion and the bottom housing.

9. The lidar assembly of claim 1, wherein the lidar comprises a rectangular main body, the window portion is disposed on a side portion of the main body, and a distance that the first protection plate protrudes outward from a surface where the window portion is located is equal to a distance that the second protection plate protrudes outward from a surface where the window portion is located.

10. The lidar assembly of claim 9, wherein the first guard plate and the second guard plate have a length that is greater than or equal to a length of the window portion.

Technical Field

The invention relates to the technical field of laser radars, in particular to a laser radar component.

Background

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a laser radar assembly, and according to the laser radar assembly provided by the embodiment of the invention, the window part of the laser radar can be protected by arranging the first protection plate and the second protection plate on the window part of the laser radar, so that external splashes are prevented from hitting the market part, and the influence of external stray light and dust on the window part can be prevented.

A lidar assembly according to an embodiment of the invention comprises: a lidar including a window portion; first guard plate and second guard plate, first guard plate with the second guard plate is located respectively the upper end and the lower extreme of window portion, first guard plate with the second guard plate respectively outside protrusion in window portion place surface.

According to the laser radar component, the external environment can be monitored through the window part of the laser radar, the window part of the laser radar can be effectively protected to a certain extent through the structure that the first protection plate and the second protection plate are arranged in the direction far away from the window part of the laser radar, external splashes above the laser radar can be shielded through the first protection plate, external splashes below the laser radar can be shielded through the second protection plate, therefore, the first protection plate and the second protection plate can protect the laser radar in multiple directions, and in addition, the first protection plate and the second protection plate can also prevent other stray light and dust from influencing the laser radar.

In addition, the laser radar component according to the present invention may also have the following additional technical features:

in some embodiments of the invention, the first guard plate and the second guard plate are both flat plates.

In some embodiments of the invention, the first guard plate and the second guard plate are parallel to each other.

In some embodiments of the invention, the first protective panel and/or the second protective panel comprises a bullet-proof glass material.

In some embodiments of the present invention, a minimum value of a vertical distance between the free end of the first shielding plate and the window portion is L0, where L0 ═ x0-x1|, x0 and x1 are given by the following relations:where α is the angle of the outer spatter, y is the vertical movement distance of the outer spatter, x is the lateral movement distance of the outer spatter, and v0 is the initial velocity of the outer spatter.

In some embodiments of the invention, the vertical distance between the free end of the first protection plate and the surface where the window part is located is L, and L is more than or equal to L0.

In some embodiments of the present invention, the first protection plate and the second protection plate protrude outward beyond the surface of the window portion by an equal distance.

In some embodiments of the invention, the lidar includes a cylindrical bottom housing, the window portion is cylindrical and is disposed above the bottom housing, the first protection plate is disc-shaped, and the second protection plate is ring-shaped and is disposed at a connection portion of the window portion and the bottom housing.

In some embodiments of the invention, the laser radar includes a main body portion of a rectangular body, the window portion is disposed at a side portion of the main body portion, and a distance that the first protection plate protrudes outward from a surface where the window portion is located is equal to a distance that the second protection plate protrudes outward from the surface where the window portion is located.

In some embodiments of the present invention, a length of the first shield plate and the second shield plate is greater than or equal to a length of the window part.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a lidar according to an embodiment of the invention;

FIG. 2 is a schematic diagram of an embodiment of a lidar assembly according to an embodiment of the invention;

FIG. 3 is a side view schematic diagram of an embodiment of a lidar assembly according to an embodiment of the invention.

FIG. 4 is a simplified block diagram of one embodiment of a lidar assembly according to an embodiment of the present disclosure;

FIG. 5 is a top view of an assembly of a second fender and a lidar of an embodiment of a lidar assembly according to an embodiment of the invention;

FIG. 6 is a schematic diagram of the trajectory of an external spatter striking a lidar window portion in an embodiment of a lidar assembly according to an embodiment of the present disclosure;

FIG. 7 is a schematic block diagram of another embodiment of a lidar assembly according to an embodiment of the invention;

FIG. 8 is a side view of another embodiment of a lidar assembly according to an embodiment of the present invention.

Reference numerals:

a laser radar assembly 100;

a laser radar 1; a window unit 11; a bottom housing 12; a main body portion 13;

a first guard plate 2; a second shield plate 3; a free end 10.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A lidar assembly 100 according to an embodiment of the invention is described below with reference to fig. 1-8.

As shown in fig. 1-8, a lidar assembly 100 includes: laser radar 1, first guard plate 2 and second guard plate 3. Through installing first guard plate 2 and second guard plate 3 on laser radar 1, can effectively shelter from outside splash and other stray light to have the effect that prevents the raise dust and cause the influence to laser radar.

Wherein, lidar 1 includes window portion 11, and lidar 1 can monitor the outside through window portion 11. The upper end and the lower extreme of window portion 11 are located respectively to first guard plate 2 and second guard plate 3, and first guard plate 2 and second guard plate 3 outwards are protruding out window portion 11 place surface respectively.

Further, in the upper end of window portion 11 of laser radar 1, be equipped with first guard plate 2, first guard plate 2 can shelter from outside splash or stray light that come from laser radar 1 top, and at the lower extreme of window portion 11 of laser radar 1, second guard plate 3 that is equipped with can shelter from outside splash or stray light that come from laser radar 1's below.

And, first guard plate 2 and second guard plate 3 are the structure that has certain convexity, the direction on the place surface of window portion 11 is kept away from to the direction of protrusion of first guard plate 2, the direction on the place surface of window portion 11 also can be kept away from to the direction of protrusion of second guard plate 3 simultaneously, from this first guard plate 2 and second guard plate 3 can shelter from outside splash for window portion 11, prevent that outside splash from sputtering window portion 11 on, first guard plate 2 and second guard plate 3 can also effectively shelter from outside stray light and raise dust simultaneously, effectively prevent that outside stray light and raise dust from causing the influence when using laser radar.

According to the laser radar assembly 100 provided by the embodiment of the invention, the external environment can be monitored through the window part 11 of the laser radar 1, the window part 11 of the laser radar 1 can be effectively protected to a certain extent through the structure that the first protection plate 2 and the second protection plate 3 are arranged in the direction away from the window part 11 of the laser radar 1, external splashes from the upper part of the laser radar 1 can be shielded through the first protection plate 2, the external splashes from the lower part of the laser radar 1 can be shielded through the second protection plate 3, so that the first protection plate 2 and the second protection plate 3 can protect the laser radar 1 in multiple directions, and in addition, the first protection plate 2 and the second protection plate 3 can also prevent other stray light and flying dust from influencing the laser radar 1.

Further, as shown in fig. 1 to 8, the first shielding plate 2 and the second shielding plate 3 are both flat plates. That is to say, first guard plate 2 locates the upper end of window portion 11 and extends, and second guard plate 3 locates window portion 11 lower extreme and extends to form platelike structure in the direction of keeping away from window portion 11, shelter from window portion 11's last edge and lower edge, thereby effectively prevent outside splash and other stray light to the influence of window portion 11, also avoided the raise dust to the influence of window portion 11.

As shown in fig. 1 to 8, the first shield plate 2 and the second shield plate 3 are parallel to each other. That is, the first shielding plate 2 and the second shielding plate 3 are arranged in parallel, so that the window unit 11 can be completely shielded, and the window unit 11 can be prevented from being hit by external splashes.

In an alternative embodiment of the invention, the first protection plate 2 and/or the second protection plate 3 comprise a bullet-proof glass material. That is, it is possible to make the first shield plate 2 of a bulletproof glass material, whereby it is possible to enhance the performance of the first shield plate 2, and to provide the first shield plate 2 with the capability of blocking external splashes having a greater impact force.

Accordingly, the second shield plate 3 may be made of a bulletproof glass material, so that the performance of the second shield plate 3 may be enhanced and the second shield plate 3 may have a capability of blocking external splashes having a greater impact force.

Can also make first guard plate 2 and second guard plate 3 all adopt bulletproof glass material to make, can promote the performance of first guard plate 2 and second guard plate 3 simultaneously from this, make first guard plate 2 and second guard plate 3 all can realize blockking the ability that has the outside splash of bigger impact force, make first guard plate 2 and second guard plate 3 better to the protection effect of laser radar 1's window portion 11.

It should be noted that, in the embodiment of the present invention, the first protection plate 2 and the second protection plate 3 are both plate-shaped structures, the first protection plate 2 and the second protection plate 3 may be circular plates, and the first protection plate 2 and the second protection plate 3 may also be rectangular plates, and the like, so that the first protection plate 2 and the second protection plate 3 have simple shapes, regular shapes, and convenient processing. Therefore, the first protection plate 2 and the second protection plate 3 may be made of a bulletproof glass material.

Further, as shown in fig. 6, the minimum value of the vertical distance between the free end 10 of the first protection plate 2 and the window portion 11 is L0, where L0 ═ x0-x1|, and x0 and x1 are given by the following relation:where α is the angle of the outer spatter, y is the vertical movement distance of the outer spatter, x is the lateral movement distance of the outer spatter, and v0 is the initial velocity of the outer spatter. In addition, g in the above relational expression is the gravitational acceleration. It should be noted that one end of the first protection plate 2 is connected to the laser radar 1, and the free end 10 refers to an end of the first protection plate 10 that is not connected to the laser radar 1.

Specifically, as shown in fig. 6, the movement locus of the external splash hitting the window portion 11 satisfies the relationship:the movement locus of the external splash when striking the surface of the window portion 11 of the laser radar 1 can be known through a relational expression, wherein α is the angle of the broken stone when being sputtered, and the initial speed v0 of the broken stone can be obtained through an external device test.

In the relational expression, the position of the point where the external splash hits the surface of the window portion 11, that is, the point B in fig. 6, may be first known, and as shown in fig. 6, the ordinate of the point B, that is, the H + H in fig. 6, may be first known, where H is the height of the position where the laser radar 1 is mounted on the external mechanism, and H is the height from the lower edge of the window portion 11 to the bottom surface of the laser radar 1.

By substituting the ordinate of the point B and other variables into the relational expression, the values of two x thereof, one of which is the abscissa of the point B, i.e., x0, and the other of which is the abscissa of the point a, i.e., x1, can be calculated by the relational expression.

Further, the minimum L0 of the vertical distance from the free end 10 of the first protection plate 2 to the surface of the window 11, that is, the minimum of the length of the first protection plate 2 to be designed, can be calculated through | x0-x1 |.

Note that the trajectory relational expression of the external splash hitting the window portion 10 can be obtained by estimation.

Decomposing the movement process of the external splash in a coordinate axis, and respectively obtaining the movement relational expressions of the external splash in the vertical direction and the transverse direction, wherein the movement relational expressions are parabolic movement in the vertical direction, and the relational expressions are as follows:the transverse movement of the external splash is uniform movement, and the relation is x ═₀tcosα。

The two relations are combined to obtain the relation above:

furthermore, the vertical distance between the free end 10 of the first protection plate 2 and the surface of the window 11 is L, and L is greater than or equal to L0. Wherein. The free end 10 of the first shielding plate 2, i.e. the end of the first shielding plate 2 not connected to the lidar 1, is the end of the first shielding plate 2 away from the surface on which the window portion 11 is located. The minimum value of the length of the first shielding plate 2, i.e., L0, is known from the above-mentioned relation. Therefore, when the actual length L of the first protection plate 2 is greater than or equal to L0, the protection effect of the first protection plate 2 on the window portion 11 of the laser radar 1 can be achieved.

In one embodiment of the present invention, the first shielding plate 2 and the second shielding plate 3 protrude outward beyond the surface on which the window portion 11 is located by the same distance. The distance of the first protection plate 2 protruding outwards from the surface of the window 11 is equal to the distance of the second protection plate 3 protruding outwards from the surface of the window 11, so that the overall structure of the laser radar assembly 100 is more compact and attractive.

Meanwhile, the distances between the first protection plate 2 and the second protection plate 3 protruding outward from the surface where the window portion 11 is located are equal, and it can be known that the size calculation of the second protection plate 3 can also be designed to meet the size calculation above, and therefore, the minimum vertical distance between the free end 10 of the second protection plate 3 and the surface where the window portion 11 is located can be L0, and the actual size of the second protection plate 3 can be L. When the actual length L of the second protection plate 3 is greater than or equal to L0, the protection effect of the second protection plate 3 on the window portion 11 of the laser radar 1 can be achieved.

In one embodiment of the present invention, as shown in fig. 1-6, the lidar 1 includes a cylindrical bottom housing 12, a window portion 11 is cylindrical and disposed above the bottom housing 12, a first protection plate 2 is disc-shaped and disposed on the top of the window portion 11, and a second protection plate 3 is ring-shaped and disposed at the connection between the window portion 11 and the bottom housing 12.

Specifically, laser radar 1 is the cylinder structure, and wherein laser radar 1's lower part is bottom shell 12, and the upper portion of bottom shell 12 is equipped with laser radar 1's window portion 11, can make window portion 11 have to reach the scanning range that is close 360 to the outside from this, and scanning range is wide.

Wherein, the top of window portion 11 is equipped with first guard plate 2, the lower part of window portion 11 and the junction of bottom shell 12, be equipped with second guard plate 3, first guard plate 2 is the plectane structure, second guard plate 3 is the ring column structure, and laser radar 1's outside is located to first guard plate 2, can carry out effectual protection to laser radar 1's window portion 11 through first guard plate 2 and second guard plate 3 from this, guarantee that laser radar 1 can not receive hitting of outside splash and hit and beat, and prevent that laser radar 1's window portion 11 from receiving the influence of outside stray light and raise dust.

In another embodiment of the present invention, as shown in fig. 7 to 8, the laser radar 1 includes a main body portion 13 having a rectangular body, and the window portion 11 is provided on a side portion of the main body portion 13.

Specifically, as shown in fig. 7, the laser radar 1 is a rectangular body, the window portion 11 is disposed on a side surface of the main body portion 13, the first protection plate 2 is disposed on a side surface of the laser radar 1 on the same side as the window portion 11, the second protection plate 3 is disposed on a side surface of the laser radar 1 on the same side as the window portion 11, the first protection plate 2 is disposed on an upper portion of the window portion 11, and the second protection plate 3 is disposed on a lower portion of the window portion 11.

Further, the first protection plate 2 and the second protection plate 3 are both in a protruding arrangement structure, that is, the first protection plate 2 and the second protection plate 3 are both arranged in a direction protruding outwards from the main body portion 13, so that the window portion 11 can be prevented from being hit by external splashes above through the first protection plate 2, and the window portion 11 can be prevented from being hit by external splashes below through the second protection plate 3.

Further, as shown in fig. 7, the first shielding plate 2 protrudes outward from the surface of the window 11 by the same distance as the second shielding plate 3 protrudes outward from the surface of the window 11. That is, the first shielding plate 2 protrudes outward beyond the surface on which the window portion 11 is located, i.e., the width-directional dimension of the first shielding plate 2. And the second shielding plate 3 may protrude outward from the surface on which the window part 11 is located, that is, the size of the second shielding plate 3 in the width direction may be the same.

The dimension in the width direction, for example, the dimension in the front-rear direction in fig. 7, further makes the overall structure of laser radar unit 100 more compact and the external design more beautiful. The first protection plate 2 and the second protection plate 3 protect the window portion 11 and simultaneously avoid shielding the window portion 11.

Alternatively, the distance that the first shielding plate 2 protrudes outward from the surface where the window part 11 is located may be different from the distance that the second shielding plate 3 protrudes outward from the surface where the window part 11 is located. That is, the first shielding plate 2 protrudes outward beyond the surface on which the window portion 11 is located, i.e., the width-directional dimension of the first shielding plate 2. And the second shielding plate 3 may protrude outward from the surface on which the window part 11 is located, that is, the size of the second shielding plate 3 in the width direction may be different.

From this can be according to actual conditions, carry out the adaptability adjustment to the size of laser radar 1's first guard plate 2 and second guard plate 3 to make laser radar 1's first guard plate 2 and second guard plate 3's design more diversified, the practicality is higher.

As shown in fig. 7, the lengths of the first shield plate 2 and the second shield plate 3 are greater than or equal to the length of the window part 11. The length of the window portion 11 of the laser radar 1 is, for example, the dimension in the left-right direction of the laser radar 1 shown in fig. 7, and the lengths of the first guard plate 2 and the second guard plate 3 are also, for example, the dimension in the left-right direction shown in fig. 7.

In an optional embodiment of the present invention, the length of the first protection plate 2 may be greater than the length of the window 11, and the size of the second protection plate 3 may be equal to the length of the window 11, so that the first protection plate 2 may have a larger shielding area above the window 11 of the laser radar 1, and may more effectively shield the impact of the external splashes from above the window 11 of the laser radar 1, and may better shield the external stray light and the dust from above.

In another optional embodiment of the present invention, the length of the first protection plate 2 may be equal to the length of the window 11, and the length of the second protection plate 3 may be greater than the length of the window 11, so that the shielding area of the second protection plate 3 under the window 11 of the laser radar 1 may be larger, the impact of external splashes from below the window 11 of the laser radar 1 may be more effectively shielded, and meanwhile, external stray light and dust from below may be better shielded.

In yet another alternative embodiment of the present invention, the length dimension of the first protection plate 2 may be greater than the length dimension of the window portion 11, and the dimension of the second protection plate 3 may also be greater than the length dimension of the window portion 11, so that the shielding area of the first protection plate 2 above the window portion 11 of the laser radar 1 may be larger, and the impact of external splashes above the window portion 11 of the laser radar 1 may be more effectively shielded; correspondingly, the shielding area of the second protection plate 3 below the window part 11 of the laser radar 1 is larger, and the second protection plate can more effectively shield the impact of the external splash below the window part 11 of the laser radar 1. Furthermore, it is also possible to better shield stray light and dust from outside above and below the window portion 11 of the laser radar 1.

In yet another alternative embodiment of the present invention, the length dimension of the first protection plate 2 may be equal to the length dimension of the window portion 11, and the dimension of the second protection plate 3 may also be equal to the length dimension of the window portion 11, so that the first protection plate 2 can effectively shield the upper side of the window portion 11 of the laser radar 1; accordingly, the second shielding plate 3 effectively shields the lower part of the window part 11 of the laser radar 1. And the length setting of first guard plate 2 and second guard plate 3 is the same with the length size of window portion 11 of lidar 1, can make lidar subassembly 100's overall structure compacter, and whole molding is more pleasing to the eye.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.