Laser radar transmitting module testing device

Abstract

The utility model provides a laser radar transmitting module testing device, and relates to the technical field of laser radars. The laser radar transmitting module testing device comprises a fixing plate; the mounting bracket is arranged on the fixed plate and is configured to mount a tested transmitting module or a transmitting-receiving module; the light spot camera module is arranged on the fixed plate and is configured to test a near-field light spot of the tested emission module; the collimator module is arranged on the fixed plate and is configured to test a far-field light spot of the tested emission module; and the optical power meter module is arranged on the fixed plate and is configured to test power parameters of the tested transmitting module. The testing device can conveniently realize measurement of various parameters.

Description

Technical Field

[0001] The utility model relates to the field of laser radar, and in particular to a laser radar emission module testing device. Background Art

[0002] With the development of intelligent assisted driving technology and autonomous driving technology, lidar has the advantages of long distance measurement, excellent angular resolution, and strong anti-interference ability, making it an indispensable sensing component for high-level assisted driving / autonomous driving.

[0003] The laser radar transmitter module is an important component of the transceiver module, providing light source for the laser radar. The performance parameters of the transmitter module have a decisive influence on the performance of the laser radar. Therefore, it is necessary to develop a test fixture to test the performance parameters of the transmitter module.

[0004] The existing testing devices have single testing functions and cannot meet the current needs of lidar production. Utility Model Content

[0005] The purpose of the utility model is to provide a laser radar transmitting module testing device, which can detect multiple performance parameters of the laser radar transmitting module, so as to realize relatively comprehensive testing of the transmitting module.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a laser radar transmitting module testing device, which is used to test the parameters of the transmitting module, including:

[0008] Fixed plate;

[0009] A mounting bracket, disposed on the fixing plate, configured to mount a transmitting module or a transceiver module to be tested;

[0010] A spot camera module is disposed on the fixing plate and is configured to test the near-field spot of the emission module under test;

[0011] A collimator module, disposed on the fixing plate, configured to test the far-field light spot of the emission module under test; and

[0012] The optical power meter module is arranged on the fixing plate and is configured to test the power parameters of the emission module under test.

[0013] In an optional embodiment, the mounting bracket is provided with a near-field mounting portion and a far-field mounting portion;

[0014] The near-field installation part and the far-field installation part are used for the transmitting module under test;

[0015] The spot camera module is arranged corresponding to the near-field installation portion;

[0016] The collimator module and the optical power meter module are arranged corresponding to the far-field installation part.

[0017] In an optional embodiment, the spot camera module includes a motion component and a spot camera;

[0018] The spot camera is installed on the motion component;

[0019] The moving assembly is mounted on the fixed plate;

[0020] The moving component is configured to adjust the relative position between the light spot camera and the transmitting module or the transceiver module under test.

[0021] In an optional embodiment, the movement includes a displacement rail, an XY direction displacement stage, a Z direction adjustment stage, a turntable, a pitch adjustment stage, a left and right tilt adjustment stage, and a mounting seat;

[0022] The displacement guide rail, the XY direction displacement stage, the Z direction adjustment stage, the turntable, the pitch adjustment stage, the left and right inclination adjustment stage and the mounting seat are stacked and installed in sequence, and the displacement navigation is installed on the fixed plate, and the spot camera is installed on the mounting seat.

[0023] In an optional embodiment, the collimator module includes a mounting frame and a collimator, the mounting frame is mounted on a fixed plate, the collimator is mounted on the fixed plate, the light input side of the collimator corresponds to the far-field mounting portion, and the light beam emitted by the measured transmitting module or the transceiver module installed in the far-field mounting portion can enter the collimator.

[0024] In an optional embodiment, the laser radar emission module testing device further includes a moving component and a transmitting mirror component;

[0025] The movable assembly is arranged on a fixed plate, and the reflector assembly is movably mounted on the movable assembly;

[0026] The reflector assembly has a first position and a second position located at the moving assembly. When in the first position, the reflector is located between the far-field mounting portion and the collimator module, and can reflect the light beam emitted by the transmitting module or the transceiver module installed at the far-field mounting portion to the optical power meter module;

[0027] In the second position, the reflector assembly is arranged in a staggered manner with respect to the collimator module, so that the light beam emitted by the transmitting module or the transceiver module installed in the far-field installation portion enters the collimator module.

[0028] In an optional embodiment, the moving assembly includes a base, a slide rail, a slider, a pneumatic slide, and an upper base;

[0029] The base is mounted on the fixed plate, the slide rail is mounted on the base, and the slider is movably mounted on the slide rail;

[0030] The pneumatic slide is parallel to the slide rail and is spaced apart from each other. The upper base is connected to the slider and the pneumatic slide. The pneumatic slide can move along the slide rail with the upper base.

[0031] The reflector assembly is mounted on the upper base.

[0032] In an optional embodiment, the reflector assembly includes a mounting base and a reflector;

[0033] The bottom of the mounting base is connected to the upper base, and the other end is provided with a mounting platform, and the reflector is mounted on the mounting platform.

[0034] In an optional embodiment, the optical power meter module includes a detection mounting base, a detection module and a display module;

[0035] The detection module is installed on the installation base, the installation base and the display module are both installed on the fixing plate, and the display module is point-connected with the detection module.

[0036] In an optional embodiment, the detection module includes a detection sensor, a lens and a laser protection housing;

[0037] The detection sensor is mounted on the mounting base, and the lens is arranged on the light-incoming side of the detection sensor to converge the light beam;

[0038] The laser protection housing cover is provided on the outer periphery of the detection sensor and the lens, and is in contact with the lens and the detection sensor.

[0039] The beneficial effects of the laser radar emission module testing device provided by the embodiment of the utility model include:

[0040] This application provides a mounting bracket on a fixed plate so that a transmitting module or an integrated transceiver module can be installed, making the test more convenient. A spot camera module is installed on the fixed plate, so that the parameters of the near-field spot of the transmitting module or the transceiver module can be measured using the spot camera. A collimator module is provided so that the far-field spot parameters of the transmitting module or the transceiver module can be measured using the collimator module. An optical power module is provided on the fixed plate so that the optical power parameters of the transmitting module or the transceiver module can be measured, thereby realizing the measurement of multiple parameters as a whole, making the functions more diverse, so that the detection of the transmitting module or the transceiver module can be better realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of the overall structure of a laser radar emission module testing device provided by an embodiment of the utility model;

[0043] Figure 2 A schematic diagram of the structure of the mounting bracket of the laser radar emission module testing device provided in the embodiment of the utility model;

[0044] Figure 3 A schematic structural diagram of the mobile components and reflector group of the laser radar emission module testing device provided in an embodiment of the utility model.

[0045] Icons: 100-LiDAR emission module test device; 110-fixed plate; 120-mounting bracket; 121-near-field mounting part; 123-far-field mounting part; 130-spot camera module; 131-motion component; 133-spot camera; 140-collimator module; 141-mounting bracket; 143-collimator; 150-optical power meter module; 151-mounting base; 153-detection module; 155-display module; 157-lens; 159-laser protection housing; 160-moving component; 170-reflector assembly. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0049] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Example

[0053] Please refer to Figure 1 The utility model provides a laser radar transmitting module testing device 100, which is used to test the parameters of the transmitting module, so as to evaluate and control the performance parameters of the transmitting module.

[0054] In this embodiment, the laser radar transmitting module testing device 100 includes a fixing plate 110, a mounting bracket 120, a spot camera 133 module, a collimator module 140 and an optical power meter module 150. The fixing plate 110 is used to form a fixed carrier. The mounting bracket 120 is arranged on the fixing plate 110 and is configured to install the transmitting module or the transceiver module under test. The spot camera module 130, arranged on the fixing plate 110, is configured to test the near-field spot of the transmitting module under test. The collimator module 140, arranged on the fixing plate 110, is configured to test the far-field spot of the transmitting module under test. The optical power meter module 150, arranged on the fixing plate 110, is configured to test the power parameters of the transmitting module under test.

[0055] In this embodiment, a mounting bracket 120 is provided on the fixed plate 110, so that a transmitting module or an integrated transceiver module can be installed, making the test more convenient. A spot camera module 130 is installed on the fixed plate 110, so that the parameters of the near-field spot of the transmitting module or the transceiver module can be measured by using the spot camera 133. A collimator module 140 is provided, so that the far-field spot parameters of the transmitting module or the transceiver module can be measured by using the collimator module 140. An optical power module is provided on the fixed plate 110, so that the optical power parameters of the transmitting module or the transceiver module can be measured, thereby realizing the measurement of multiple parameters as a whole, making the functions more diverse, so that the detection of the transmitting module or the transceiver module can be better realized.

[0056] It should be noted that the mounting bracket 120 of the present application can be used to install a transmitting module or a transceiver module assembled with a transmitting module and a receiving module. The main reason is that the utility model inventor found that the transmitting module and the transmitting module will also deteriorate to a certain extent after being assembled, and it is also necessary to test the transceiver module after the transmitting module and the receiving module are assembled. It can be seen that the laser radar transmitting module test device 100 provided in the present application can test a single transmitting module, and can also assemble a transceiver module formed by assembling a transmitting module and a receiving module.

[0057] Please refer to Figure 1 and Figure 2In this embodiment, a near-field mounting portion 121 and a far-field mounting portion 123 are provided on the mounting bracket 120. The near-field mounting portion is located on the left side of the mounting bracket 120, and the far-field mounting portion 123 is located on the left side of the mounting bracket 120. Both the near-field mounting portion and the far-field mounting portion 123 are provided with mounting holes for the transmitting module and the transceiver module. The near-field mounting portion 121 and the far-field mounting portion 123 are used for the transmitting module or the transceiver module to be tested. The spot camera module 130 is arranged corresponding to the near-field mounting portion 121. The parallel light tube module 140 and the optical power meter module 150 are arranged corresponding to the far-field mounting portion 123. When it is necessary to test the parameters of the field spot of the transmitting module, the transmitting module can be installed in the near-field mounting portion by screws corresponding to the transmitting module mounting holes on the near-field mounting portion 121. At this time, the light beam emitted by the transmitting module can shine into the spot camera module 130.

[0058] By arranging the on-site installation part and the far-field installation part 123 on the installation bracket 120, it is more convenient to implement the on-site and far-field testing of the transceiver module.

[0059] Furthermore, when testing the transmitting module, the light-incoming side of the transmitting module is arranged facing the spot camera 133. When testing the transceiver module, since the transceiver module is integrated and mounted on the module mounting seat, a reflector is arranged on the module mounting seat corresponding to the light-outgoing side of the transmitting module, so that the light emitted by the reflector can enter the spot camera 133 and the collimator module 140 when the transmitting module is tested.

[0060] In this embodiment, the spot camera module 130 includes a motion component 131 and a spot camera 133. The spot camera 133 is mounted on the motion component 131. The motion component 131 is mounted on the fixed plate 110. The moving component 160 is configured to adjust the relative position between the spot camera 133 and the transmitting module or the transceiver module under test.

[0061] Please refer to Figure 1 and Figure 2 In this embodiment, by setting a motion component 131, the corresponding position relationship between the spot camera 133 and the transmitting module or the transceiver module of the near-field mounting part 121 can be adjusted through the motion component 131, so that the measurement can be better achieved.

[0062] In this embodiment, the motion assembly 131 includes a displacement rail, an XY displacement stage, a Z adjustment stage, a turntable, a pitch adjustment stage, a left and right tilt adjustment stage, and a mounting seat. The displacement rail, the XY displacement stage, the Z adjustment stage, the turntable, the pitch adjustment stage, the left and right tilt adjustment stage, and the mounting seat are stacked and installed in sequence, and the displacement navigation is installed on the fixed plate 110, and the spot camera 133 is installed on the mounting seat. In this way, the position, pitch angle, tilt angle, rotation angle, etc. of the spot camera 133 can be adjusted as needed. It is more convenient to operate and practical.

[0063] It should be noted that the motion component 131 can be understood as an omnidirectional displacement platform, which can realize both movement and rotation, so that the spot camera 133 can better realize testing.

[0064] Please refer to Figure 1 and Figure 2 In this embodiment, the collimator module 140 includes a mounting frame 141 and a collimator 143, and the mounting frame 141 is mounted on the fixing plate 110. The collimator 143 is mounted on the mounting frame 141, and the light-incoming side of the collimator 143 corresponds to the far-field mounting portion 123. The light beam emitted by the measured transmitting module or the transceiver module installed in the far-field mounting portion 123 can enter the collimator 143.

[0065] The present application can better achieve the measurement of far-field parameters by setting the collimator 143.

[0066] Please refer to Figure 1 and Figure 3 In this embodiment, the laser radar transmitting module testing device 100 further includes a moving component 160 and a reflector component 170. The moving component 160 is disposed on the fixed plate 110, and the reflector component 170 is movably mounted on the moving component 160. The reflector component 170 has a first position and a second position located at the moving component 160. In the first position, the reflector is located between the far-field mounting portion 123 and the collimator module 140, and can reflect the light beam emitted by the transmitting module or the transceiver module installed in the far-field mounting portion 123 to the optical power meter module 150. In the second position, the reflector component 170 is staggered with the collimator module 140 so that the light beam emitted by the transmitting module or the transceiver module installed in the far-field mounting portion 123 enters the collimator module 140.

[0067] In this embodiment, by providing the moving assembly 160 and the reflector assembly 170, the reflector assembly 170 can be moved to the second position by the moving assembly 160 to achieve avoidance when testing the far-field parameters, and the reflector assembly 170 can be moved to the first position by the moving assembly 160 when testing the optical power, so that the reflector assembly 170 can reflect the light beam to the optical power meter module 150. This makes the structure simpler and the operation more convenient.

[0068] In this embodiment, the moving assembly 160 includes a base, a slide rail, a slider, a pneumatic slide, and an upper base. The base is mounted on the fixed plate 110, the slide rail is mounted on the base, and the slider is movably mounted on the slide rail. The pneumatic slide is parallel to the slide rail and is spaced apart, the upper base is connected to the slider and the pneumatic slide, and the pneumatic slide can move along the slide rail with the upper base. The reflector assembly 170 is mounted on the upper base.

[0069] While the movement is achieved by arranging the slide rail and the slide table, a pneumatic slide table is arranged as a driving part so that the position can be adjusted more conveniently according to the demand.

[0070] It should be noted that a pneumatic slide is a device that uses compressed air as a power source to achieve linear reciprocating motion. It is usually used in automation equipment as an actuator for precise positioning or handling of parts. It consists of a cylinder, a guide rail, a slider, and other auxiliary components. It drives the slider to move precisely and smoothly along the guide rail by controlling the change in air pressure. The characteristics of a pneumatic slide include fast response speed, simple structure, easy maintenance, and strong load capacity. It is widely used in mechanical processing, assembly lines, material handling and other fields.

[0071] In this embodiment, the reflector assembly 170 includes a mounting base and a reflector. The bottom of the mounting base is connected to the upper base, and the other end is provided with a mounting platform, and the reflector is mounted on the mounting platform. This facilitates the installation of the reflector.

[0072] Please refer to Figure 1 and Figure 3 In this embodiment, the optical power meter module 150 includes a detection mounting base 151, a detection module 153 and a display module 155. The detection module 153 is mounted on the mounting base 151, the mounting base 151 and the display module 155 are both mounted on the fixing plate 110, and the display module 155 is connected to the detection module 153. The above arrangement can make measurement more convenient.

[0073] In this embodiment, the detection module 153 includes a detection sensor, a lens 157 and a laser protection housing 159. The detection sensor is mounted on the mounting base 151, and the lens 157 is arranged on the light-incoming side of the detection sensor to converge the light beam. The laser protection housing 159 is arranged on the outer periphery of the detection sensor and the lens 157, and abuts against the lens 157 and the detection sensor.

[0074] In this embodiment, the laser protection housing 159 can be provided to prevent damage caused by laser focusing, and can help the detection sensor and lens 157 to dissipate heat. The lens 157 component is provided to reduce the size of the detection sensor, thereby saving more costs.

[0075] In summary, the working principle and beneficial effects of the laser radar transmission module testing device 100 provided by the embodiment of the utility model include:

[0076] The present application sets a mounting bracket 120 on the fixed plate 110, so that the transmitting module or the integrated transceiver module can be installed, making the test more convenient. The spot camera module 130 is installed on the fixed plate 110, so that the parameters of the near-field spot of the transmitting module or the transceiver module can be measured by using the spot camera 133. The collimator module 140 is set, so that the far-field spot parameters of the transmitting module or the transceiver module can be measured by using the collimator module 140. The optical power module is set on the fixed plate 110, so that the optical power parameters of the transmitting module or the transceiver module can be measured, thereby realizing the measurement of multiple parameters as a whole, making the functions more diverse, so that the detection of the transmitting module or the transceiver module can be better realized.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser radar transmitting module testing device, used to test the parameters of the transmitting module, characterized in that: include: A fixing plate (110); A mounting bracket (120), disposed on the fixing plate (110), and configured to mount the transmitting module to be tested; A light spot camera module (130), arranged on the fixing plate (110), configured to test the near-field light spot of the emission module under test; A collimator module (140), arranged on the fixing plate (110), configured to test the far-field light spot of the emission module under test; as well as, The optical power meter module (150) is arranged on the fixing plate (110) and is configured to test the power parameters of the emission module under test.

2. The laser radar transmitting module testing device according to claim 1, characterized in that: The mounting bracket (120) is provided with a near-field mounting portion (121) and a far-field mounting portion (123); The near-field installation part (121) and the far-field installation part (123) are used for the emission module to be tested; The light spot camera module (130) is arranged corresponding to the near-field installation portion (121); The collimator module (140) and the optical power meter module (150) are arranged corresponding to the far-field mounting portion (123).

3. The laser radar transmitting module testing device according to claim 2, characterized in that: The light spot camera module (130) comprises a motion component (131) and a light spot camera (133); The light spot camera (133) is installed on the motion component (131); The moving component (131) is mounted on the fixing plate (110); The motion component (131) is configured to adjust the relative position between the light spot camera (133) and the transmitting module or the transceiver module to be tested.

4. The laser radar transmitting module testing device according to claim 3, characterized in that: The motion assembly (131) comprises a displacement guide rail, an XY direction displacement stage, a Z direction adjustment stage, a rotating stage, a pitch adjustment stage, a left and right tilt angle adjustment stage and a mounting seat; The displacement guide rail, the XY direction displacement stage, the Z direction adjustment stage, the turntable, the pitch adjustment stage, the left and right tilt angle adjustment stage and the mounting seat are sequentially stacked and installed, and the displacement guide rail is installed on the fixed plate (110), and the spot camera (133) is installed on the mounting seat.

5. The laser radar transmitting module testing device according to claim 2, characterized in that: The collimator module (140) comprises a mounting frame (141) and a collimator (143); the mounting frame (141) is mounted on a fixing plate (110); the collimator (143) is mounted on the mounting frame (141); the light-incoming side of the collimator (143) corresponds to the far-field mounting portion (123); and the light beam emitted by the measured transmitting module or the transceiver module mounted on the far-field mounting portion (123) can enter the collimator (143).

6. The laser radar transmitting module testing device according to claim 2, characterized in that: The laser radar emission module testing device also includes a moving component (160) and a reflector component (170); The movable assembly (160) is arranged on the fixed plate (110), and the reflector assembly (170) is movably mounted on the movable assembly (160); The reflector assembly (170) has a first position and a second position located on the moving assembly (160); when in the first position, the reflector is located between the far-field mounting portion (123) and the collimator module (140), and can reflect a light beam emitted by the transmitting module or the transceiver module installed on the far-field mounting portion (123) to the optical power meter module (150); In the second position, the reflector assembly (170) is arranged in a staggered manner with respect to the collimator module (140), so that the light beam emitted by the transmitting module or the transceiver module installed in the far-field installation portion (123) enters the collimator module (140).

7. The laser radar transmitting module testing device according to claim 6, characterized in that: The moving assembly (160) comprises a base, a slide rail, a slider, a pneumatic slide table and an upper base; The base is mounted on the fixed plate (110), the slide rail is mounted on the base, and the slider is movably mounted on the slide rail; The pneumatic slide is parallel to the slide rail and is spaced apart from each other. The upper base is connected to the slider and the pneumatic slide. The pneumatic slide can move along the slide rail with the upper base. The reflector assembly (170) is mounted on the upper base.

8. The laser radar transmitting module testing device according to claim 7, characterized in that: The reflector assembly (170) comprises a mounting base and a reflector; The bottom of the mounting base is connected to the upper base, and the other end is provided with a mounting platform, and the reflector is mounted on the mounting platform.

9. The laser radar transmitting module testing device according to claim 1, characterized in that: The optical power meter module (150) comprises a mounting base (151), a detection module (153) and a display module (155); The detection module (153) is mounted on the mounting base (151), the mounting base (151) and the display module (155) are both mounted on the fixing plate (110), and the display module (155) is point-connected to the detection module (153).

10. The laser radar transmitting module testing device according to claim 9, characterized in that: The detection module (153) comprises a detection sensor, a lens (157) and a laser protection housing (159); The detection sensor is mounted on the mounting base (151), and the lens (157) is arranged on the light-incoming side of the detection sensor and can converge the light beam; The laser protection housing (159) is disposed on the outer periphery of the detection sensor and the lens (157), and is in contact with the lens (157) and the detection sensor.

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