阅读说明：本技术 一种接收光路调轴平台 (Receiving light path shaft adjusting platform ) 是由 疏达 李�远 南景洋 张海武 梁炳寅 于 2019-03-27 设计创作，主要内容包括：本申请涉及雷达安装技术领域,尤其涉及一种接收光路调轴平台。本申请接收光路调轴平台,包括接收模块、接收电路板、固定件和三维调节件,所述固定件、三维调节件安装在一基板上,所述的固定件用于固定接收模块；所述的三维调节件用于将接收电路板与接收模块的光轴对准,所述的三维调节件包括三维调整架、转接板、隔离柱,所述的三维调整架安装在基板上,转接板用于连接三维调整架、隔离柱,所述的隔离柱一端与接收电路板相配合。本申请实施例通过三维调整架调节光轴,操作简单,调节精度高。(The application relates to the technical field of radar installation, in particular to a receiving light path shaft adjusting platform. The receiving optical path axis adjusting platform comprises a receiving module, a receiving circuit board, a fixing piece and a three-dimensional adjusting piece, wherein the fixing piece and the three-dimensional adjusting piece are arranged on a substrate, and the fixing piece is used for fixing the receiving module; the three-dimensional adjusting piece is used for aligning the optical axis of the receiving circuit board with the optical axis of the receiving module, the three-dimensional adjusting piece comprises a three-dimensional adjusting frame, a switching plate and an isolation column, the three-dimensional adjusting frame is installed on the base plate, the switching plate is used for connecting the three-dimensional adjusting frame and the isolation column, and one end of the isolation column is matched with the receiving circuit board. The embodiment of the application adjusts the optical axis through the three-dimensional adjusting frame, and is simple to operate and high in adjusting precision.)

1. A receiving optical path axis-adjusting platform is characterized by comprising a receiving module, a receiving circuit board, a fixing piece and a three-dimensional adjusting piece, wherein the fixing piece and the three-dimensional adjusting piece are arranged on a substrate,

the fixing piece is used for fixing the receiving module;

the three-dimensional adjusting piece is used for aligning the optical axis of the receiving circuit board with the optical axis of the receiving module, the three-dimensional adjusting piece comprises a three-dimensional adjusting frame, a switching plate and an isolation column, the three-dimensional adjusting frame is installed on the base plate, the switching plate is used for connecting the three-dimensional adjusting frame and the isolation column, and one end of the isolation column is matched with the receiving circuit board.

2. The receiving optical path adjusting platform of claim 1, wherein the receiving circuit board has a plurality of adjusting holes, a positioning post corresponding to the adjusting holes is disposed on a surface of the receiving module contacting the receiving circuit board, a diameter of the positioning post is smaller than a diameter of the adjusting holes, and the positioning post can move in the adjusting holes.

3. The optical receiving path axis adjusting platform of claim 2, wherein the diameter of the positioning post is 1-2mm, and the diameter of the adjusting hole is 2.5-3.5 mm.

4. The optical receiving path axis adjusting platform as claimed in claim 3, wherein the number of the adjusting holes and the positioning posts is three.

5. The optical receiving path axis adjusting platform of claim 4, wherein the positioning posts and the adjusting holes are disposed around the optical axis.

6. The receive optical path boresight platform of claim 5 further comprising a positioning sleeve, a head of the positioning sleeve being insertable into the adjustment hole for preliminary positioning of the receive circuit board.

7. The optical receiving path boresight platform of claim 6 wherein the positioning sleeve is a cone structure, the inner diameter of the positioning sleeve is the same as the diameter of the positioning post, and the diameter of the bottom circle of the cone is larger than the diameter of the adjusting hole.

8. The optical receiving path boresight platform as claimed in claim 7, wherein the inner diameter of the positioning sleeve is 1-2mm, and the diameter of the bottom circle of the cone is 4-6 mm.

9. The optical receiving circuit axis adjusting platform of claim 8, wherein the receiving circuit board is provided with a plurality of mounting holes, and the receiving circuit board and the isolation column are connected with the screws through the mounting holes.

10. The receiving optical path boresight platform of claim 9, further comprising an axial positioning block disposed between the receiving circuit board and the receiving module for preliminary positioning of the receiving circuit board and the receiving module.

Technical Field

The invention relates to the technical field of radar installation, in particular to a receiving light path axis adjusting platform.

Background

In the existing laser radar optical-mechanical system, the optical axis alignment needs to be carried out on the receiving optical path of the laser radar, so that the receiving optical path of the laser radar is converged to the photoelectric detector arranged on the receiving circuit board, and an optical signal is converted into an electric signal. When the eccentricity of the photoelectric detector exceeds the allowable range of the optical axis system, and insufficient optical signals enter the photoelectric detector, the photoelectric detector cannot detect the optical signals, and the laser radar cannot work normally, so that the photoelectric detector needs to be adjusted to align the optical axis of the photoelectric detector.

The existing adjusting method mostly adopts a manual adjusting mode, the precision seriously depends on the experience level of operators, and the time consumption is long.

Disclosure of Invention

The embodiment of the application provides a laser radar shaft adjusting platform, which adopts a three-dimensional adjusting part to adjust a receiving optical axis, can accurately align the receiving optical axis, enables a received signal to be in an optimal state, and is simple, convenient and reliable in adjusting process.

To achieve the purpose, the embodiment of the invention adopts the following technical scheme:

on one hand, the receiving optical path axis adjusting platform comprises a receiving module, a receiving circuit board, a fixing piece and a three-dimensional adjusting piece, wherein the fixing piece and the three-dimensional adjusting piece are arranged on a base plate,

the fixing piece is used for fixing the receiving module;

the three-dimensional adjusting piece is used for aligning the optical axis of the receiving circuit board with the optical axis of the receiving module, the three-dimensional adjusting piece comprises a three-dimensional adjusting frame, a switching plate and an isolation column, the three-dimensional adjusting frame is installed on the base plate, the switching plate is used for connecting the three-dimensional adjusting frame and the isolation column, and one end of the isolation column is matched with the receiving circuit board.

In a possible implementation manner, the receiving circuit board is provided with a plurality of adjusting holes, one surface of the receiving module, which is in contact with the receiving circuit board, is provided with positioning columns corresponding to the adjusting holes, the diameters of the positioning columns are smaller than the diameters of the adjusting holes, and the positioning columns can move relative to the adjusting holes.

In a possible implementation manner, the diameter of the positioning column is 1-2mm, and the diameter of the adjusting hole is 2.5-3.5 mm.

In a possible implementation manner, the number of the adjusting holes and the positioning columns is three.

In a possible implementation manner, the positioning column and the adjusting hole are arranged around the optical axis.

In a possible implementation mode, the positioning device further comprises a positioning sleeve, and the head of the positioning sleeve can penetrate into the adjusting hole and is used for preliminarily positioning the receiving circuit board.

In a possible implementation mode, the positioning sleeve is of a conical structure, the inner diameter of the positioning sleeve is the same as the diameter of the positioning column, and the diameter of the bottom circle of the cone is larger than the diameter of the adjusting hole.

In a possible realization mode, the inner diameter of the positioning sleeve is 1-2mm, and the diameter of the conical bottom circle is 4-6 mm.

In a possible implementation manner, a plurality of mounting holes are formed in the receiving circuit board, and the receiving circuit board and the isolation column are connected with the screws through the mounting holes in a matched manner.

In a possible implementation manner, the receiving module further comprises an axial positioning block, which is arranged between the receiving circuit board and the receiving module and is used for performing primary positioning on the receiving circuit board and the receiving module.

The embodiment of the application adjusts the optical axis through the three-dimensional adjusting frame, and is simple to operate and high in adjusting precision.

Drawings

Fig. 1 is an overall schematic diagram of an embodiment of the present application.

Fig. 2 is a schematic diagram of a connection between a receiving module and a receiving circuit board according to an embodiment of the present application.

Fig. 3 is a top view of the connection between the receiving module with the positioning sleeve and the receiving circuit board according to the embodiment of the present application.

FIG. 4 is a sectional view taken along the plane A-A in the present embodiment.

FIG. 5 is a cross-sectional view of a receiving optical axis adjusting platform with an axial positioning block according to an embodiment of the present application.

In the figure:

1. a receiving module; 2. receiving a circuit board; 3. a fixing member; 4. a substrate; 5. a three-dimensional adjusting frame; 6. an adapter plate; 7. an isolation column; 8. an adjustment hole; 9. a positioning column; 10. a positioning sleeve; 11. mounting holes; 12. and (5) axially positioning the blocks.

Detailed Description

The technical scheme of the application is further explained by the specific implementation mode in combination with the attached drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

As shown in fig. 1, a receiving optical path axis adjusting platform comprises a receiving module 1, a receiving circuit board 2, a fixing member 3 and a three-dimensional adjusting member, wherein the fixing member 3 and the three-dimensional adjusting member are arranged on a substrate 4,

the fixing piece 3 is used for fixing the receiving module 1;

the three-dimensional adjusting part is used for aligning the optical axis of the receiving circuit board 2 with the optical axis of the receiving module 1, the three-dimensional adjusting part comprises a three-dimensional adjusting frame 5, an adapter plate 6 and an isolation column 7, the three-dimensional adjusting frame 5 is installed on the base plate 4, the adapter plate 6 is used for connecting the three-dimensional adjusting frame 5 and the isolation column 7, and one end of the isolation column 7 is matched with the receiving circuit board 2.

The receiving circuit board 2 is driven to move relative to the receiving module 1 through the three-dimensional adjusting frame 5, so that the optical axes of the receiving circuit board 2 and the receiving module 1 are aligned, and the adjustment is accurate and convenient.

As shown in fig. 2, the receiving circuit board 2 is provided with a plurality of adjusting holes 8, one surface of the receiving module 1 contacting the receiving circuit board 2 is provided with a positioning column 9 corresponding to the adjusting holes 8, the diameter of the positioning column 9 is smaller than that of the adjusting holes 8, and the positioning column 9 can move in the adjusting holes 8.

The receiving circuit board 2 includes a photodetector (not shown), and the photodetector is soldered on the receiving circuit board 2 and integrated with the receiving circuit board 2. When adjusting, the three-dimensional adjusting frame 5 is moved away from the receiving module 1 along the optical axis direction, and enough space is reserved. The receiving circuit board 2 is placed on the receiving module 1, the adjusting hole 8 of the receiving circuit board 2 is correspondingly sleeved on the positioning column 9 of the receiving module 1, then the three-dimensional adjusting frame 5 is close to the receiving circuit board 2 along the optical axis, the isolating column 7 is driven to contact with the receiving circuit board 2, and then the receiving circuit board 2 is fixed on the isolating column 7 by using a screw (not shown in the figure). The three-dimensional adjusting frame 5 is adjusted to drive the receiving circuit board 2 to move in the three-dimensional direction, so that the optical axis of the receiving circuit board 2 is aligned with the optical axis of the receiving module 1, the signal amplitude of the aligned photoelectric detector is maximum, a pad (not shown in the figure) is arranged at the edge of the adjusting hole 8, the positioning column 9 of the receiving module 1 is welded with the pad of the adjusting hole 8 of the receiving circuit board 2, and the receiving circuit board 2 is firmly fixed on the receiving module 1. And finally, checking whether the welding is firm or not, and finishing the adjustment and installation work of the receiving module.

By adopting the matching mode of the adjusting holes 8 and the positioning columns 9, the receiving circuit board 2 can move in the three-dimensional direction relative to the receiving module 1 under the driving of the three-dimensional adjusting frame 5. The precision of the three-dimensional adjusting frame 5 can be set, the general scale is 0.5mm, and the precision is 0.01 mm.

The diameter of the positioning column 9 is 1-2mm, and the diameter of the adjusting hole 8 is 2.5-3.5 mm.

By adopting the diameter, the adjusting range of the receiving circuit board 2 relative to the receiving module 1 is +/-0.75 mm, and the requirement of optical axis alignment can be met.

The adjusting holes and the positioning columns are preferably three.

And the positioning column 9 and the adjusting hole 8 are arranged around the optical axis. The design can better position and align the optical axis.

As shown in fig. 3, in order to improve the adjustment accuracy, the receiving optical path axis adjusting platform further includes a positioning sleeve 10, and a head of the positioning sleeve 10 can penetrate into the adjusting hole 8 to perform preliminary positioning on the receiving circuit board 2.

As shown in fig. 4, the positioning sleeve 10 is a conical structure, the inner diameter of the positioning sleeve is the same as the diameter of the positioning column 9, and the diameter of the bottom circle of the cone is larger than the diameter of the adjusting hole 8.

When the positioning sleeve 10 is sleeved on the positioning column 9, the conical surface of the positioning sleeve can be clamped at the edge of the adjusting hole 8, the positions of the positioning column 9 and the adjusting hole 8 are fixed, and then the positions of the receiving circuit board 1 and the receiving module 2 are preliminarily positioned.

The inner diameter of the positioning sleeve 10 is 1-2mm, and the diameter of the conical bottom circle is 4-6 mm.

The adjusting method after the initial positioning by the positioning sleeve 10 comprises the following steps: the three-dimensional adjusting frame 5 is moved away from the receiving module 1 in the optical axis direction so that there is enough space to place the receiving circuit board 2 on the receiving module 1. The adjusting holes of the receiving circuit board 2 are correspondingly sleeved on the three positioning columns 9 of the receiving module 1, and the position of the photoelectric detector of the receiving circuit board 2 is fixed. The three positioning sleeves 10 are sequentially inserted into the positioning columns 9, and the positioning sleeves are enabled to axially press the receiving circuit board 2 and enable the receiving circuit board to be in contact with the receiving module 1, so that the photoelectric detector of the receiving circuit board 2 is preliminarily positioned relative to the receiving module 1 through the positioning sleeves 10. Then, the three-dimensional adjustment bracket 5 is brought close to the receiving circuit board 2 along the optical axis until the spacer 7 mounted thereon contacts the receiving circuit board 2, and the receiving circuit board 2 is fixed to the spacer 7 with screws. The positioning sleeve 10 is removed, the three-dimensional adjusting frame 5 is adjusted to enable the signal amplitude of the photoelectric detector to be at the maximum, the photoelectric detector is located at the best position at the moment, and the positioning column 9 of the receiving module 1 is welded with the welding disc of the adjusting hole 8 of the receiving circuit board 2, so that the receiving circuit board 2 is firmly fixed on the receiving module 1. And checking whether the welding is firm or not, and enabling the photoelectric detector to work normally. And the receiving module is adjusted and installed.

The receiving light path axis adjusting platform is initially positioned in the adjusting process, and then is accurately adjusted through the three-dimensional adjusting frame, so that the adjustment is more accurate.

The receiving circuit board 2 is provided with a plurality of mounting holes 11, and the receiving circuit board 2 and the isolation column 7 are connected with screws through the mounting holes 11 in a matching manner.

As shown in fig. 5, the receiving optical path axis adjusting platform further includes an axial positioning block 12, which is disposed between the receiving circuit board 2 and the receiving module 1, and is used for primarily positioning the receiving circuit board 2 and the receiving module 1.

The axial positioning block 12 is used for positioning the distance between the photoelectric detector and the receiving module 1 to realize axial coarse positioning, is placed between the receiving circuit board 2 and the receiving module 1, is removed after positioning, and realizes axial fine adjustment through the three-dimensional adjusting frame 5. The addition of the axial positioning block 12 can improve the axial accuracy.

The technical principles of the present application have been described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the present application and is not to be construed in any way as limiting the scope of the application. Based on the explanations herein, those skilled in the art will be able to conceive other embodiments of the present application without inventive effort, which shall fall within the scope of the present application.