Multi-line laser radar optical calibration jig

Abstract

The application discloses a kind of multi-line laser radar optical calibration jig, including fixed platform, multi-line laser radar, first fine adjustment platform, second fine adjustment platform, first adjusting arm and second adjusting arm.Fixed platform is used to fix multi-line laser radar, and multi-line laser radar includes first laser emission part and second laser emission part.First fine adjustment platform and second fine adjustment platform are arranged on both sides of fixed platform;First adjusting arm is set on first fine adjustment platform and is aligned with first laser emission part, and second adjusting arm is set on second fine adjustment platform and is aligned with second laser emission part.By first adjusting arm and second adjusting arm control adjustment corresponding laser emission part, simultaneous optical calibration to two laser emission parts is realized.Add fine adjustment platform and adjusting arm, and the optical calibration efficiency of multi-line laser radar is improved, and multiple laser emission parts of multi-line laser radar are simultaneously subjected to optical calibration.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser radar, in particular to a multi-line laser radar optical calibration jig. BACKGROUND

[0002] As a kind of radar equipment, laser radar has the advantages of high precision, strong anti-interference ability, fast reaction speed, etc., so it is suitable for various use environments. As described above, laser radar can emit laser beams as detection signals to the surrounding three-dimensional space, and the laser beams are reflected by the objects in the surrounding space to become echo signals and return, and the laser radar compares the received echo signals with the emitted detection signals, thereby obtaining relevant information such as distance, speed, etc. about the surrounding objects.

[0003] The laser radar at present is divided into single-line laser radar and multi-line laser radar, wherein the multi-line laser radar can contain a single or multiple laser emitting parts, and the installation of laser emitting parts needs to be optically calibrated. The traditional method adopts single calibration in sequence, and for multi-line laser radar with multiple laser emitting parts, the optical calibration efficiency is relatively low.

[0004] The present application provides a multi-line laser radar optical calibration jig, which can simultaneously calibrate multiple laser emitting parts of a multi-line laser radar, thereby improving the optical calibration efficiency of the multi-line laser radar. SUMMARY

[0005] The multi-line laser radar optical calibration jig disclosed by the present application is provided with two fine adjustment devices, i.e. a first fine adjustment table and a second fine adjustment table, which control and adjust the corresponding laser emitting parts through a first adjusting arm and a second adjusting arm, respectively, so as to realize the optical calibration of two laser emitting parts at the same time.

[0006] The technical scheme adopted by the present application is as follows: a multi-line laser radar optical calibration jig, comprising a fixing table, a multi-line laser radar, a first fine adjustment table, a second fine adjustment table, a first adjusting arm and a second adjusting arm. The fixing table is used for fixing the multi-line laser radar, and the multi-line laser radar contains a first laser emitting part and a second laser emitting part; the first fine adjustment table and the second fine adjustment table are arranged on both sides of the fixing table; the first adjusting arm is arranged on the first fine adjustment table and aligned with the first laser emitting part, and the second adjusting arm is arranged on the second fine adjustment table and aligned with the second laser emitting part.

[0007] As an optional scheme of the technical scheme of the present application, the fixing table comprises a first base, and an L-shaped fixing frame is fixedly arranged on the first base, a limiting groove is arranged at the bottom of the L-shaped fixing frame, and a clamp is fixedly arranged at the top of the L-shaped fixing frame.

[0008] As an optional scheme of the technical scheme of the present application, a radar fixing wing is arranged on the multi-line laser radar, and the radar fixing wing is matched with the limiting groove.

[0009] As an optional solution of the technical scheme of the present application, the first fine adjustment table comprises a second base, a first horizontal linear slide table is fixedly arranged on the second base, a first T-shaped table is arranged on the first horizontal linear slide table, a first vertical linear slide table is fixedly arranged on the side surface of the first T-shaped table, and a first rotary slide table is fixedly arranged on the first vertical linear slide table.

[0010] As an optional solution of the technical scheme of the present application, the first adjustment arm is horizontally arranged and fixedly connected with the first rotary slide table.

[0011] As an optional solution of the technical scheme of the present application, the second fine adjustment table comprises a third base, a second horizontal linear slide table is fixedly arranged on the third base, a second T-shaped table is arranged on the second horizontal linear slide table, a second vertical linear slide table is fixedly arranged on the side surface of the second T-shaped table, and a second rotary slide table is fixedly arranged on the second vertical linear slide table.

[0012] As an optional solution of the technical scheme of the present application, the second adjustment arm is horizontally arranged and fixedly connected with the second rotary slide table.

[0013] As an optional solution of the technical scheme of the present application, the first laser emitting part is extended with a supporting leg on both sides, and a through hole is arranged on the supporting leg; a fixing hole and a spring probe groove are further arranged on the first laser emitting part.

[0014] As an optional solution of the technical scheme of the present application, a supporting column and a spring probe are arranged at the end of the first adjustment arm, the supporting column is matched with the through hole, and the spring probe is matched with the spring probe groove.

[0015] The present application has the following beneficial effects: two fine adjustment devices, i.e., the first fine adjustment table and the second fine adjustment table, are arranged on both sides of the fixing table, the first adjustment arm and the second adjustment arm are used to control the adjustment of the corresponding laser emitting parts, and the optical calibration of the two laser emitting parts is simultaneously realized. The fine adjustment table and the adjustment arm are used to simultaneously perform the optical calibration of the multiple laser emitting parts of the multi-line laser radar, and the optical calibration efficiency of the multi-line laser radar is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole schematic view of the calibration jig according to the present application.

[0017] Figure 2 It is a whole schematic view of the fixing table according to the present application.

[0018] Figure 3 It is a structural schematic view of the first laser emitting part according to the present application.

[0019] Figure 4 Overall schematic diagram of the first fine adjustment table according to the present application.

[0020] Figure 5 Overall schematic diagram of the second fine adjustment table according to the present application.

[0021] Figure 6 Schematic diagram of the first adjustment arm end structure according to the present application.

[0022] Wherein, 100 - fixed table; 110 - first base; 120 - L-shaped fixed frame; 130 - limiting groove; 140 - clamp; 200 - multi-line laser radar; 210 - first laser emitting part; 211 - leg; 212 - through hole; 213 - fixing hole; 214 - spring probe groove; 220 - second laser emitting part; 230 - radar fixing wing; 300 - first fine adjustment table; 310 - second base; 320 - first transverse linear slide table; 330 - first T-shaped table; 340 - first longitudinal linear slide table; 350 - first rotary slide table; 400 - second fine adjustment table; 410 - third base; 420 - second transverse linear slide table; 430 - second T-shaped table; 440 - second longitudinal linear slide table; 450 - second rotary slide table; 500 - first adjustment arm; 510 - strut; 520 - spring probe; 600 - second adjustment arm. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present application clearer, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the following specific examples are only used to explain the present application, and are not used to limit the present application. Based on the following examples, all other examples obtained by those skilled in the art without creative labor are within the protection scope of the present application. The parts such as clamps, transverse linear slide tables, longitudinal linear slide tables and rotary slide tables used in the examples of the present application are common adjustment devices, which can be directly purchased and used in the market, and do not belong to the protection scope of the present application.

[0024] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship of the drawings, and are only for the convenience of the simplified description of the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the embodiments, unless otherwise explicitly specified and limited, the terms "set", "connected", and the like should be understood broadly. For example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or connected through an intermediate medium, or connected internally between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0026] As shown in the overall schematic view of the multi-line laser radar optical calibration jig, a fixed table 100 is arranged at the middle position, and a multi-line laser radar 200 to be calibrated is fixed on the fixed table 100. A first fine adjustment table 300 is arranged at the left side position of the fixed table 100, and a second fine adjustment table 400 is arranged at the right side position. The first fine adjustment table 300 is connected with the bottom laser emitting part of the multi-line laser radar 200 through a first adjusting arm 500, and the second fine adjustment table 400 is connected with the top laser emitting part of the multi-line laser radar 200 through a second adjusting arm 600. Figure 1 As shown in the overall schematic view of the fixed table 100, it includes a first base 110 at the bottom, and an L-shaped fixing frame 120 is vertically fixed on the first base 110. A limiting groove 130 is arranged at the bottom of the L-shaped fixing frame 120, and a clamp 140 is fixed at the top.

[0027] Figure 2 As shown, it also includes a multi-line laser radar 200 to be calibrated, which is arranged on the L-shaped fixing frame 120 vertically. The radar fixing wing 230 is embedded in the limiting groove 130 at the bottom of the L-shaped fixing frame 120, and the top is clamped and fixed by the clamp 140. At this time, the first laser emitting part 210 is at the bottom, and the second laser emitting part 220 is at the top. Figure 2 It should be noted that the first laser emitting part 210 and the second laser emitting part 220 have the same structure in this embodiment, so the end of the first adjusting arm 500 and the end of the second adjusting arm 600 also have the same structure. Therefore, the detailed description of the first laser emitting part 210 and the end of the first adjusting arm 500 in this embodiment is also applicable to the second laser emitting part 220 and the end of the second adjusting arm 600. However, the laser emitters used in the laser emitting parts can be the same laser emitters or different laser emitters, which can be edge emitting lasers (EEL) or vertical cavity surface emitting lasers (VCSEL).

[0028] As shown in the overall schematic view of the multi-line laser radar optical calibration jig, a fixed table 100 is arranged at the middle position, and a multi-line laser radar 200 to be calibrated is fixed on the fixed table 100. A first fine adjustment table 300 is arranged at the left side position of the fixed table 100, and a second fine adjustment table 400 is arranged at the right side position. The first fine adjustment table 300 is connected with the bottom laser emitting part of the multi-line laser radar 200 through a first adjusting arm 500, and the second fine adjustment table 400 is connected with the top laser emitting part of the multi-line laser radar 200 through a second adjusting arm 600.

[0029] Figure 3 ​​The schematic diagram of the first laser emitting unit 210 shown is shown. The first laser emitting unit 210 is rectangular and has four legs 211 on both sides in the horizontal direction. The legs 211 are provided with through holes 212. The first laser emitting unit 210 is also provided with fixing holes 213 and spring probe slots 214. The fixing holes 213 are used to fix the first laser emitting unit 210 to the multi-line lidar 200 with screws. The spring probe slots 214 are the placement positions for the spring probes 520.

[0030] like Figure 4 The schematic diagram of the first fine-tuning stage 300 shown includes a second base 310 at the bottom, a first transverse linear slide 320 fixedly mounted on the second base 310, a first T-shaped stage 330 fixedly mounted on the sliding surface of the first transverse linear slide 320, the transverse surface of the first T-shaped stage 330 being fixed to the sliding surface of the first transverse linear slide 320, a first longitudinal linear slide 340 fixedly mounted on the longitudinal surface of the first T-shaped stage 330, a first rotary slide 350 fixedly mounted on the sliding surface of the first longitudinal linear slide 340, a first adjusting arm 500 mounted on the first rotary slide 350, and the end of the first adjusting arm 500 being aligned with the position of the first laser emitting part 210.

[0031] like Figure 5 The schematic diagram of the second fine-tuning stage 400 shown includes a third base 410 at the bottom, a second transverse linear slide 420 fixedly mounted on the third base 410, a second T-shaped stage 430 fixedly mounted on the sliding surface of the second transverse linear slide 420, the transverse surface of the second T-shaped stage 430 being fixed to the sliding surface of the second transverse linear slide 420, a second longitudinal linear slide 440 fixedly mounted on the longitudinal surface of the second T-shaped stage 430, a second rotary slide 450 fixedly mounted on the sliding surface of the second longitudinal linear slide 440, a second adjusting arm 600 mounted on the second rotary slide 450, and the end of the second adjusting arm 600 being aligned with the position of the second laser emitting unit 220.

[0032] like Figure 6 The schematic diagram of the end structure of the first adjusting arm 500 shown indicates that the end of the first adjusting arm 500 is provided with a support column 510, the position of which is aligned with the position of the through hole 212 on the first laser emitting part 210; a spring probe 520 is also provided, the position of which is aligned with the position of the spring probe groove 214. The specific detailed structure of the end of the first adjusting arm 500 is designed according to different laser emitting part structures. When adjusting the laser emitting part, in order to avoid squeezing the electronic components on the laser emitting part, hollowing out is performed at the corresponding positions. Therefore, the specific detailed structure is not limited.

[0033] The following description of the usage steps of the multi-line lidar 200 optical calibration fixture will further illustrate the invention:

[0034] S1, first, the fixed platform 100, the first fine adjustment platform 300 and the second fine adjustment platform 400 are installed on the optical platform, and the first adjusting arm 500 is installed on the first rotating slide 350, and the second adjusting arm 600 is installed on the second rotating slide 450, and the transverse, longitudinal and angle of the first fine adjustment platform 300 and the second fine adjustment platform 400 are coarsely adjusted to the required position;

[0035] S2, the first laser emitting part 210 and the second laser emitting part 220 are placed at the end position of the first adjusting arm 500 and the second adjusting arm 600, the support 510 passes through the through hole 212, and the end of the spring probe 520 is located in the spring probe slot 214;

[0036] S3, the multi-line laser radar 200 is placed on the fixed platform 100, the radar fixing wing 230 is embedded in the limiting groove 130 at the bottom of the L-shaped fixing frame 120, the position is adjusted so that the spring probe 520 presses the first laser emitting part 210 and the second laser emitting part 220 on the multi-line laser radar 200, and the clamp 140 is locked to fix the multi-line laser radar 200;

[0037] S4, the first fine adjustment platform 300 and the second fine adjustment platform 400 are adjusted, and the first laser emitting part 210 and the second laser emitting part 220 are optically tested at the same time until they are adjusted to the required position, and the first laser emitting part 210 and the second laser emitting part 220 are fixed on the multi-line laser radar 200 by using the screw passing through the fixed hole 213;

[0038] S5, open the clamp 140, take out the multi-line laser radar 200 and complete the optical calibration.

[0039] As described above, the beneficial effects obtained by the embodiment are: by arranging the first fine adjustment platform 300 and the second fine adjustment platform 400 on both sides of the fixed platform 100, the first adjusting arm 500 and the second adjusting arm 600 are used to control and adjust the corresponding laser emitting part, so that the optical calibration of the two laser emitting parts is realized at the same time. By increasing the fine adjustment platform and the adjusting arm, the optical calibration of multiple laser emitting parts of the multi-line laser radar can be realized at the same time, and the optical calibration efficiency of the multi-line laser radar is improved.

[0040] The above only describes the preferred embodiment of the application, and does not limit the application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application should be included in the protection scope of the application. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art; when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the application.

Claims

1. A multi-line lidar optical calibration jig, characterized by, The utility model relates to a kind of multi-line laser radar fixing device, including: Fixed platform and multi-line laser radar, the fixed platform is used to fix multi-line laser radar, and the multi-line laser radar includes first laser emission part and second laser emission part;The first laser emission part and the second laser emission part have the same structure; First fine adjustment platform and second fine adjustment platform, the first fine adjustment platform and second fine adjustment platform are arranged on both sides of fixed platform; First adjusting arm and second adjusting arm, the first adjusting arm is arranged on the first fine adjustment platform and is aligned with the first laser emission part, and the second adjusting arm is arranged on the second fine adjustment platform and is aligned with the second laser emission part; The first adjusting arm end and the second adjusting arm end have the same structure.

2. The multi-line lidar optical calibration jig of claim 1, wherein, The fixed platform includes first base, and L-shaped fixing frame is fixedly arranged on the first base, the bottom of the L-shaped fixing frame is provided with limiting slot, and clamp is fixedly arranged on the top of the L-shaped fixing frame.

3. The multi-line lidar optical calibration jig of claim 2, wherein, Radar fixing wing is arranged on the multi-line laser radar, and the radar fixing wing is matched with the limiting slot.

4. The multi-line lidar optical calibration jig of claim 1, wherein, The first fine adjustment platform includes second base, and first transverse linear slide is fixedly arranged on the second base, first T-shaped table is arranged on the first transverse linear slide, first longitudinal linear slide is fixedly arranged on the side surface of the first T-shaped table, and first rotary slide is fixedly arranged on the first longitudinal linear slide.

5. The multi-line lidar optical calibration jig of claim 4, wherein, The first adjusting arm is horizontally arranged, and is fixedly connected with the first rotary slide.

6. The multi-line lidar optical calibration jig of claim 1, wherein, The second fine adjustment platform includes third base, and second transverse linear slide is fixedly arranged on the third base, second T-shaped table is arranged on the second transverse linear slide, second longitudinal linear slide is fixedly arranged on the side surface of the second T-shaped table, and second rotary slide is fixedly arranged on the second longitudinal linear slide.

7. The multi-line lidar optical calibration jig of claim 6, wherein, The second adjusting arm is horizontally arranged, and is fixedly connected with the second rotary slide.

8. The multi-line lidar optical calibration jig of claim 1, wherein, Supporting leg is arranged on both sides of the first laser emission part outward in extension, and through hole is arranged on the supporting leg;Fixed hole and spring probe slot are further arranged on the first laser emission part.

9. The multi-line lidar optical calibration jig of claim 8, wherein, Supporting column and spring probe are arranged on the first adjusting arm end, the supporting column is matched with the through hole, and the spring probe is matched with the spring probe slot.

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