阅读说明：本技术 一种激光雷达发射端以及激光雷达 (Laser radar transmitting terminal and laser radar ) 是由 李家盛 向少卿 于 2019-11-07 设计创作，主要内容包括：本申请提供一种激光雷达发射端和激光雷达,激光雷达发射端包括发射板组、发射板固定杆和发射板固定架,其中,该发射板组中的发射板上设置有激光器,每个发射板设置贯穿孔,该发射板固定杆的数量为至少一根,每根发射板固定杆穿过贯穿孔而与该发射板组连接,发射板固定杆与该发射板固定架连接。根据本申请的激光雷达发射端,技术效果至少可以包括提供了一种新的激光雷达发射端。(The application provides a laser radar transmitting terminal and laser radar, the laser radar transmitting terminal includes launching plate group, launching plate dead lever and launching plate mount, wherein, is provided with the laser instrument on the launching plate among this launching plate group, and every launching plate sets up the through hole, and the quantity of this launching plate dead lever is at least one, and every launching plate dead lever passes the through hole and is connected with this launching plate group, and the launching plate dead lever is connected with this launching plate mount. According to the laser radar transmitting terminal, the technical effect at least comprises that a novel laser radar transmitting terminal is provided.)

1. A lidar transmitting end comprising: launching pad group, launching pad dead lever and launching pad mount, wherein:

the laser device is arranged on the emitting plates in the emitting plate group, each emitting plate is provided with a through hole, the number of the emitting plate fixing rods is at least one, each emitting plate fixing rod penetrates through the through hole to be connected with the emitting plate group, and the emitting plate fixing rods are connected with the emitting plate fixing frame.

2. The lidar transmitting end of claim 1, wherein the transmitting plate fixing rod has one end fixed to the transmitting plate fixing frame and the other end suspended;

the transmitting plate fixing frame is arranged close to a central shaft of the laser radar.

3. The lidar transmitting end of claim 1, wherein the transmitting plate mount comprises a first mount and a second mount, the first mount and the second mount being non-coplanar;

the first fixing piece is attached to the central shaft of the laser radar and is suitable for being connected with the transmitting plate fixing rod;

one end of the second fixing piece is connected with the top of the first fixing piece, and the other end of the second fixing piece is suspended and is suitable for being connected with the top of the emitting plate group.

4. The lidar transmitting end of claim 1, wherein the transmitting plate is provided with an L-shaped cut, the L-shaped cut comprises a first cut and a second cut, and the transmitting plate is connected to the second fixing member through the first cut and the second cut formed by the L-shaped cut.

5. The lidar transmitting end of claim 4, wherein a glue is disposed between the first section of the L-shaped notch and the second fixing member, and a glue is disposed between the second section of the L-shaped notch and the second fixing member.

6. The lidar transmitting end of claim 1, wherein the through hole of the transmitting plate is connected with the transmitting plate fixing rod through a glue.

7. The lidar transmitting end of any of claims 1-6, wherein the number of the transmitting plate fixing bars is 2.

8. The lidar transmitting end of claim 1, further comprising: the backup pad, the backup pad with the back laminating of expelling plate for support the expelling plate.

9. The lidar transmitting end of claim 8, further comprising: the heating panel, the heating panel is laminated with the backup pad or with the expelling plate for dispel the heat for the expelling plate.

10. Lidar comprising a lidar transmitting end according to any of claims 1-9.

Technical Field

The application relates to the technical field of laser detection, in particular to a laser radar transmitting end and a laser radar.

Background

This section provides background information related to the present application and does not necessarily constitute prior art.

In the automatic driving technology, an environment sensing system is a basic and crucial ring and is a guarantee for the safety and intelligence of an automatic driving automobile, and a laser radar in an environment sensing sensor has incomparable advantages in the aspects of reliability, detection range, distance measurement precision and the like. The laser radar analyzes the turn-back time of the laser after encountering the target object by transmitting and receiving the laser beam, and calculates the relative distance between the target object and the vehicle.

The lidar may include a transmitting end (also referred to as a lidar transmitting end) that may be used to transmit laser light. The structure of the transmitting end may affect the performance of the transmitting end, for example, the accuracy of the laser emitted by the transmitting end.

Content of application

The application provides a laser radar transmitting terminal and a laser radar.

In a first aspect, an embodiment of the present application provides a laser radar transmitting end, including transmitting plate group, transmitting plate dead lever and transmitting plate mount, wherein: the laser is arranged on the emitting plate in the emitting plate group, each emitting plate is provided with a through hole, the number of the emitting plate fixing rods is at least one, each emitting plate fixing rod penetrates through the through hole to be connected with the emitting plate group, and the emitting plate fixing rods are connected with the emitting plate fixing frame.

In some embodiments, one end of the transmitting plate fixing rod is fixed on the transmitting plate fixing frame, and the other end of the transmitting plate fixing rod is suspended; the transmitting plate fixing frame is arranged close to a central shaft of the laser radar.

In some embodiments, the launch plate mount comprises a first mount and a second mount, the first mount and the second mount being non-coplanar; the first fixing piece is attached to the central shaft of the laser radar and is suitable for being connected with the transmitting plate fixing rod; one end of the second fixing piece is connected with the top of the first fixing piece, and the other end of the second fixing piece is suspended and is suitable for being connected with the top of the emitting plate group.

In some embodiments, the emitting plate is provided with an L-shaped cut, the L-shaped cut comprises a first cut and a second cut, and the emitting plate is connected with the second fixing member through the first cut and the second cut formed by the L-shaped cut.

In some embodiments, a glue is disposed between the first surface of the L-shaped opening and the second fixing member, and a glue is disposed between the second surface of the L-shaped opening and the second fixing member.

In some embodiments, the through holes of the emission plate are connected with the emission plate fixing rods through glue.

In some embodiments, the number of the transmitting plate fixing rods is 2.

In some embodiments, the lidar transmitting end further includes a supporting plate attached to the back surface of the transmitting plate for supporting the transmitting plate.

In some embodiments, the lidar transmitting end further includes a heat dissipation plate, and the heat dissipation plate is attached to the supporting plate or attached to the transmitting plate, and is used for dissipating heat of the transmitting plate.

In a second aspect, an embodiment of the present application provides a laser radar, including: any one of the lidar transmitting terminals provided by the first aspect above.

Therefore, according to the laser radar transmitting end provided by the application, the transmitting plate group is connected through the at least one transmitting plate fixing rod, the transmitting plate fixing rod is connected with the transmitting plate fixing frame, and the technical effect at least comprises that a new laser radar transmitting end is provided.

Drawings

The foregoing and additional features and characteristics of the present application will be better understood from the following detailed description, taken with reference to the accompanying drawings, which are given by way of example only and which are not necessarily drawn to scale. Like reference numerals are used to indicate like parts in the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a lidar transmitting end according to the present application;

FIG. 2A is a schematic view of a launch plate according to the present application connected to a second mount through an L-shaped cut-out;

FIG. 2B is a schematic view of a launch plate according to the present application connected to a second mount through an alternative L-shaped cut-out;

FIG. 3 is a schematic view of a single emitter plate with one emitter plate securing bar provided in accordance with the present application;

fig. 4 is a schematic view of a single emitter plate in a case where three emitter plate fixing bars are provided according to the present application;

fig. 5 is a schematic view of a positional relationship among a radiation plate, a support plate, and a radiation plate according to the present application;

wherein:

1-emitting plate group, 11-emitting plate, 111-first section, 112-second section; 2-transmitting plate fixing rod; 3-a transmitting plate fixing frame, 31-a first fixing piece and 32-a second fixing piece; 4-a laser; 5-a support plate; 6-a heat dissipation plate; 7-through hole.

Detailed Description

Preferred embodiments of the present application will now be described in detail with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the present application and its applications or uses.

In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

Referring to fig. 1, an embodiment of the present application provides a laser radar transmitting end, including: the device comprises a launching plate group 1, a launching plate fixing rod 2 and a launching plate fixing frame 3.

In this embodiment, the laser 4 may be disposed on an emission plate in the emission plate group.

In the present embodiment, each emission plate is provided with a through-hole 7. The number of the launching plate fixing rods is at least one, and each launching plate fixing rod penetrates through the through hole to be connected with the launching plate group.

In some embodiments, the set of emitter plates corresponds to at least one opening position, and each emitter plate is provided with a through hole 7 at the at least one opening position.

Referring to fig. 1, the transmitting plate group 1 may include a first transmitting plate 11, a second transmitting plate (not indicated by reference numerals), a third transmitting plate (not indicated by reference numerals), a fourth transmitting plate (not indicated by reference numerals), a fifth transmitting plate (not indicated by reference numerals), a sixth transmitting plate (not indicated by reference numerals), a seventh transmitting plate (not indicated by reference numerals), and an eighth transmitting plate (not indicated by reference numerals). It is to be understood that the number of the emitting plates of the emitting plate group may be one or more, and the number of the emitting plates shown in fig. 1 is only an illustration and should not be construed as a limitation on the number of the emitting plates.

In the present embodiment, the number of the lasers installed on the emitting panel may be one or at least two, and the number of the lasers on the emitting panel shown in fig. 1 is only illustrative and should not be construed as a limitation on the number of the lasers.

In some embodiments, the set of emitter plates may correspond to at least one aperture location. In general, the shape and size of the emitter plates in an emitter plate group may be substantially the same. The positions of the holes corresponding to the emitting plate groups can indicate the specific positions of the holes at the same position for the emitting plates.

For example, a circle is made by taking a position which is on an angular bisector of the upper right corner of the emitting plate and is 2 centimeters away from the upper right corner of the emitting plate as a circle center and taking 0.5 centimeter as a radius; the position of this circle may be the first aperture position.

For example, a circle is drawn by taking the position which is on the angular bisector of the lower right corner of the transmitting plate and is 2 centimeters away from the lower right corner of the transmitting plate as the center of the circle and taking 0.5 centimeter as the radius; the position of this circle may be the second aperture position.

In some embodiments, each emission plate may be provided with a through-hole at the at least one opening position.

For example, each emission plate in the emission plate group may be provided with a through hole at the first opening position.

For example, each of the emission plates in the emission plate group may be provided with a first through hole at the first hole position, and may be provided with a second through hole at the second hole position.

In this embodiment, the number of the firing plate fixing rods is at least one, and each firing plate fixing rod passes through the through hole at the same hole position to be connected with the firing plate group.

Here, the number of the radiation plate fixing bars is the same as the number of the hole positions (also the number of the through holes per radiation plate).

In the present embodiment, the launch plate fixing lever 2 is connected with the launch plate holder 3.

In this embodiment, the transmitting plate fixing frame may be a part of the laser radar optical engine skeleton, or may be a structure additionally disposed outside the optical engine skeleton. The transmitting plate fixing frame can be fixedly connected with an optical machine framework of the laser radar.

It should be noted that the above-mentioned transmitting plate fixing frame, although named as "frame", may be any structural member having a fixing function, and the "frame" should not be construed as limiting the shape of the transmitting plate fixing frame.

It should be noted that, the laser radar transmitting end provided by the above embodiment of the present application may be connected to the transmitting plate group through at least one transmitting plate fixing rod, the transmitting plate fixing rod is connected to the transmitting plate fixing frame, and the technical effects at least include: firstly, a novel laser radar transmitting end is provided; second, probably need roughly fix a position earlier in the expelling plate installation and finely tune, the setting of expelling plate dead lever is passed through to this application embodiment, can realize wearing the expelling plate to the expelling plate dead lever on realize promptly that it roughly fixes a position to expelling plate group, and avoid all needing to carry out the process of roughly fixing a position to single expelling plate, from this, the lidar emission end that this application embodiment provided, this kind of new structural style can make installation effectiveness improve.

In the embodiment of the present application, the connection may be a fixed connection, and the connection manner is not limited.

In this embodiment, the lidar transmitting end may be configured to transmit laser light. In general, the lidar transmitting end may be provided in the lidar.

In some embodiments, the number of the emission plates of the emission plate group may be one or more.

In some embodiments, one end of the transmitting plate fixing rod is fixed to the transmitting plate fixing frame, and the other end of the transmitting plate fixing rod is suspended in the air; the transmitting plate fixing frame is arranged close to a central shaft of the laser radar. In other words, the transmitting plate fixing frame 3 is located close to the center axis of the laser radar with respect to the transmitting plate fixing rod 2.

It should be noted that, the transmitting plate fixing frame is arranged at the central shaft (rotating shaft) closer to the laser radar, in other words, the fixing manner of the transmitting plate fixing frame inside and the transmitting plate fixing rod outside (inside close to the central shaft and outside far from the central shaft) can make the transmitting plates installed one by one from the direction close to the central shaft to the direction far from the central shaft when the laser radar is assembled; when a single emitting plate is installed, the emitting plate can be moved from outside to inside; due to the fact that the assembly mode is not blocked by the shell, the installation space is large, and the assembly is convenient (it can be understood that the shell is installed last in general). In contrast, if the transmitting plate fixing frame is far away from the central shaft relative to the transmitting plate fixing rod, the transmitting plate needs to be moved from inside to outside when a single transmitting plate is installed, and due to the fact that some devices are installed inside the optical machine rotor, the installation space is small and the assembly is inconvenient.

In some embodiments, referring to fig. 1, the above-mentioned transmitting board fixing frame 3 may include a first fixing member 31 and a second fixing member 32. The first fixing member 31 and the second fixing member 32 are not coplanar.

In some embodiments, the first fixing member is attached to a central shaft of the laser radar, and is adapted to be connected to the transmitting plate fixing rod. In other words, the first fixing member 31 of the above-mentioned launch pad fixing frame is connected with the launch pad fixing rod 2; the second fixing member 32 may be connected to the emitting plate group.

In some embodiments, the second fixing member 32 has one end connected to the top of the first fixing member and the other end suspended and adapted to be connected to the top of the emitting plate group. The connection position of the second fixing member 32 to the launch plate may be any position of the launch plate, and is not limited herein.

In some embodiments, the emitting plate is provided with an L-shaped cut, the L-shaped cut comprises a first cut and a second cut, and the emitting plate is connected with the second fixing member through the first cut and the second cut formed by the L-shaped cut. In other words, the above-described emission plate may be provided with an L-shaped cutout. The L-shaped cut may include a first cut and a second cut. The emitting plate is connected with the second fixing piece through the first tangent plane and the second tangent plane.

It should be noted that the emitting plate has a certain thickness, and after the L-shaped cut is formed on the emitting plate, the cut surface can be formed.

Here, the position of the L-shaped notch on the emitting plate may be set according to practical situations, and is not limited herein.

Referring to fig. 2A, fig. 2A is a schematic view of the connection between the emitting plate and the second fixing member through an L-shaped cut. In fig. 2A, an L-shaped cut-out may be provided at the upper left corner of the emitter plate. The portion of the second fixing member 32 connected to the emitting plate group may be a rectangular parallelepiped. One face of the rectangular parallelepiped may be connected to a first cut surface 111 of the L-shaped cutout of the emission plate 11, and the other face of the rectangular parallelepiped may be connected to a second cut surface 112 of the L-shaped cutout of the emission plate 11. Here, the first tangent plane and the second tangent plane may form an angle of about 90 degrees.

Referring also to FIG. 2B, FIG. 2B is a schematic view of the emitter plate being coupled to the second mount through an alternative L-shaped cut-out. FIG. 2B is different from FIG. 2A in that L-shaped notches are arranged differently; the L-shaped cut-out in fig. 2A is formed by a small portion protruding with respect to the emission plate main body; the L-shaped cut in fig. 2B is formed by a small portion missing with respect to the body of the emitter plate.

It should be noted that, through the L-shaped cut, the connecting position of the transmitting plate and the second fixing member can be arranged on the plane in two directions, thereby improving the connecting stability between the transmitting plate and the second fixing member.

In some embodiments, a glue may be disposed between the first section of the L-shaped notch and the second fixing member. A glue body can be arranged between the second section of the L-shaped cut and the second fixing piece.

In some embodiments, the second fixing member of the transmitting plate fixing frame may be connected to the transmitting plate through a glue.

In some embodiments, the through holes of the emission plate are connected with the emission plate fixing rods through glue.

In some embodiments, the fixing rod of the launching plate and the first fixing piece of the launching plate fixing frame can be connected in various ways; for example, the connection may be fixed by integral molding, screws, glue, or the like.

In some embodiments, the number of the above-described transmitting plate fixing bars may be one. For example, please refer to fig. 3, which is a schematic diagram of a single emitting plate in the case of disposing a emitting plate fixing rod. In fig. 3, the emission plate is provided with a through hole 7, and is connected with an emission plate fixing rod through the through hole; the emitter plate may be provided with two L-shaped cutouts in connection with two second fixing elements 32.

In some embodiments, the number of the above-described transmitting plate fixing bars may be at least two. For example, referring to fig. 1, a lidar transmitting end is shown with two transmitting plate fixing rods.

It should be noted that, by providing 2 transmitting board fixing rods, the installation speed and the installation accuracy can be balanced. The installation speed can be improved by adopting the fixed rod of the transmitting plate, and the installation accuracy can be ensured by adopting the L-shaped notch. The mode of combining 2 transmitting plate fixing rods and an L-shaped notch is adopted, firstly, the two transmitting plate fixing rods can be quickly and roughly positioned, and the two-rod positioning mode is faster and more accurate in positioning relative to one rod; then the mounting accuracy can be ensured through the L-shaped notch; thus, the structure can make the installation speed faster and the installation accuracy more guaranteed.

In some embodiments, the number of the above-described transmitting plate fixing bars may be three. For example, please refer to fig. 4, which is a schematic diagram of a single transmitting plate in a case where three transmitting plate fixing rods are provided; in the emission plate shown in fig. 4, three through-holes 7 are provided.

In some embodiments, please refer to fig. 5, the lidar transmitting end may further include a supporting plate 5. Here, the support plate 5 may be attached to the back surface of the emitting plate and may be used to support the emitting plate. The side of the emitter plate on which the lasers are provided may be referred to as the front side and the side of the emitter plate on which the lasers are not provided may be referred to as the back side. It is to be understood that, in fig. 5, the positional relationship of the support plate 5 and the emitting plate 11 is shown. In fig. 5, the support plate 5 is fixedly connected (and attached) to the emission plate 11; it is to be understood that the gap between the support plate 5 and the emission plate 11 in fig. 5 is for convenience to show the relative position between the support plate 5 and the emission plate 11; in practice, there may be no significant gap between the support plate 5 and the emitter plate 11.

It should be noted that the transmitting board may be a circuit board, and when electronic components on the circuit board are in an operating state, a large amount of heat may be generated, which may cause deformation of the circuit board. The deformation of the circuit board may cause deviation of the direction of light emitted from the laser from a predetermined direction. The supporting plate is arranged, so that the circuit board can be supported when the circuit board is possibly deformed, and the circuit board is prevented from deforming; therefore, deviation of the direction of emergent light of the laser can be avoided, and the precision of the laser radar can be improved.

In some embodiments, referring to fig. 5, the lidar transmitting end may further include a heat dissipation plate 6. The heat sink plate may be used to dissipate heat for the emitter plate. Here, the heat dissipation plate may be bonded to the support plate or may be bonded to the emission plate. Referring to fig. 5, fig. 5 shows the heat sink 6 attached to the support plate 5. It should be noted that the heat dissipation plate may be directly attached to the emission plate, which is not shown in the drawings. It is to be understood that the gap between the support plate 5 and the heat dissipation plate 6 in fig. 5 is for convenience to show the relative position between the support plate 5 and the heat dissipation plate 6; in practice, there may be no significant gap between the support plate 5 and the heat dissipation plate 6.

The number of the support plates and the number of the heat dissipation plates are not limited herein.

In some embodiments, the number of support plates may be the same as the number of emitter plates. The number of the heat dissipation plates may be the same as the number of the emission plates.

It should be noted that, the mode of heating panel and backup pad or expelling plate laminating can increase the heat dissipation contact surface, improves the radiating efficiency, guarantees laser radar's precision, slows down the ageing speed of electronic components in the laser radar transmitting terminal to and extension laser radar's life.

On the other hand, this application embodiment still provides a lidar, and above-mentioned lidar can include any one lidar transmitting terminal that this application mentioned.

It is obvious that further different embodiments can be devised by combining different embodiments and individual features in different ways or modifying them.

The scanning device and the lidar comprising same and the operating method according to preferred embodiments of the present application have been described above with reference to specific embodiments. It will be understood that the above description is intended to be illustrative and not restrictive, and that various changes and modifications may be suggested to one skilled in the art in view of the above description without departing from the scope of the present application. Such variations and modifications are also intended to be included within the scope of the present application.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.