Device for laser radar road test

Abstract

The utility model discloses a device for laser radar road testing. The device comprises a mounting seat, a placement seat and a rain and fog simulation assembly. A connecting piece is arranged at the bottom of the mounting seat and is used for connecting the mounting seat with a vehicle; the placing seat is arranged on the mounting seat, and the placing seat is used for mounting the laser radar; the rain and fog simulation assembly comprises a rain and fog device which is connected to the mounting seat and arranged above the placement seat, and the rain and fog device is used for spraying rain and fog to simulate a rainfall environment. According to the technical scheme, the device provided by the utility model can enable the performance test of the laser radar not to be limited by weather, and the tested data fit the real use condition of the laser radar, so that the performance of the laser radar can be effectively verified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic driving sensor testing, in particular to a device for laser radar road testing. BACKGROUND

[0002] In the field of environment perception such as automatic driving, laser radar as a key sensor can generate high-precision three-dimensional environment information by emitting laser pulses and receiving their reflected signals.

[0003] However, under complex and variable environmental conditions, the performance of laser radar can be affected by different factors. In particular, under adverse weather conditions such as rain, fog, etc., the cover on the surface of the laser radar window will significantly affect its sensing accuracy, and thus affect the decision-making ability of the entire system.

[0004] Traditional laser radar performance testing uses a scheme that either tests in a fixed laboratory simulating rain and fog environment, or waits until rain and fog weather occurs to test. The former cannot effectively verify the detection performance of laser radar on the surrounding environment in actual use scenarios, such as various obstacles, road facilities, and various types and motion states of road participants around the automatic driving vehicle when driving, due to the space limitations of the laboratory and the limited simulation targets. The latter testing method has low reproducibility and executability of testing conditions due to the accidental and short-term nature of actual rain and fog weather, and the inability to control the size of rain and fog. CONTENT OF THE INVENTION

[0005] The present application provides a device for laser radar road testing, aiming to solve the problem that the performance testing of laser radar in the prior art is limited by weather and cannot effectively verify the detection performance of laser radar.

[0006] To achieve the above-mentioned purpose, the present application provides a device for laser radar road testing. The device comprises:

[0007] A mounting seat provided with a connecting piece at the bottom, the connecting piece being used for connecting the mounting seat with a vehicle;

[0008] A placing seat provided on the mounting seat, the placing seat being used for mounting and setting the laser radar;

[0009] A rain and fog simulation assembly comprising a rain and fog sprayer connected to the mounting seat and arranged above the placing seat, the rain and fog sprayer being used for spraying rain and fog to simulate precipitation environment.

[0010] In some embodiments, the rain and fog simulation assembly further comprises a water storage member and a water pump, the water inlet end of the water pump being connected to the water storage member through a pipeline, and the water outlet end being connected to the rain and fog sprayer through a pipeline; the water pump is used for pumping and supplying water in the water storage member to the rain and fog sprayer.

[0011] In some embodiments, the water pump is an adjustable water pump, and the output flow of the water pump can be adjusted.

[0012] In some embodiments, the rain and mist device comprises:

[0013] a shower pipe, which is horizontally arranged above the placement seat and is connected to the water pump through a pipeline;

[0014] a plurality of spray heads, which are uniformly arranged on the shower pipe.

[0015] In some embodiments, the spray heads are adjustable spray heads, and the adjustable spray heads can manually or automatically adjust the density of water spray.

[0016] In some embodiments, the rain and mist device is connected and supported on the mounting seat through a rain and mist frame; the rain and mist frame comprises:

[0017] a first frame body, which is arranged vertically on the mounting seat adjacent to the placement seat;

[0018] a second frame body, which is arranged at an end of the first frame body away from the mounting seat, and one side of the second frame body is hingedly connected to the first frame body, and the other side opposite to the hinged side movably arranges the shower pipe;

[0019] When the second frame body rotates relative to the first frame body, the second frame body moves closer to or further away from the placement seat below.

[0020] In some embodiments, the first frame body comprises two oppositely arranged support rods, the second frame body comprises a rotating rod and two support arms which are arranged opposite to each other and are vertically connected to the rotating rod, and the rotating rod is rotatably arranged between the two support rods and between the two support arms away from the rotating rod, and the shower pipe is rotatably arranged between the two support arms away from the rotating rod.

[0021] The first rotating locking structure is used to drive the rotating rod to rotate relative to the support rod and lock the relative position between the rotating rod and the support rod, and the second rotating locking structure is used to drive the shower pipe to rotate relative to the support arm and lock the relative state between the shower pipe and the support arm.

[0022] In some embodiments, a water collecting groove is formed on the mounting seat corresponding to the rain and mist device and the mounting seat, and a water outlet hole is formed on the water collecting groove, and the water collecting groove is used to collect the rain and mist sprayed through the rain and mist device and discharge through the water outlet hole.

[0023] In some embodiments, the water outlet hole is connected to the water storage member through a pipeline for returning water in the water collecting groove to the water storage member.

[0024] In some embodiments, the connecting member is a suction cup arranged at the bottom of the mounting seat, and the number of the suction cup is at least two.

[0025] The technical scheme of the present application provides a device for road test of a laser radar. The device comprises a mounting seat, a placing seat and a rain and fog simulation assembly. The bottom of the mounting seat is provided with a connecting member for connecting the mounting seat with a vehicle. The placing seat is arranged on the mounting seat and is used for mounting and setting the laser radar. The rain and fog simulation assembly comprises a rain and fog sprayer connected to the mounting seat and arranged above the placing seat, and the rain and fog sprayer is used for spraying rain and fog to simulate a precipitation environment. When the performance of the laser radar is tested, the device can be connected to the vehicle through the mounting seat, and the laser radar can be further mounted on the placing seat. The rain and fog simulation assembly can simulate precipitation environments of different intensities and types. Thus, even if the weather is sunny, the rain and fog simulation assembly can still simulate rainy and foggy weather, and the performance of the laser radar can be tested in an outdoor real environment. Therefore, the device provided by the present application can make the performance test of the laser radar no longer affected by the weather, and the data obtained by the test is consistent with the real situation, and the performance of the laser radar can be effectively verified. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 FIG. 1 is a structural schematic diagram of a device for road test of a laser radar according to an embodiment of the present application;

[0028] Figure 2 FIG. 1 is a structural schematic diagram of a device for road test of a laser radar according to an embodiment of the present application; DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] It should be noted that all directional indications, such as upper, lower, left, right, front, back, and the like, are merely used for convenience of description and are not intended to limit the application to a particular orientation.

[0031] It should also be noted that when an element is referred to as being "fixed" or "attached" to another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present.

[0032] In addition, the descriptions involving "first", "second", and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated, or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments 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 required by the present application.

[0033] Referring to Figure 1 As shown in the drawings, the present application proposes a device 100 for laser radar road test. The device includes a mounting seat 10, a placing seat 20 and a rain and fog simulation assembly 30. Among them, the bottom of the mounting seat 10 is provided with a connecting piece 40, the connecting piece 40 is used for connecting the mounting seat 10 with the vehicle; the placing seat 20 is arranged on the mounting seat 10, and the placing seat 20 is used for the installation and arrangement of the laser radar; the rain and fog simulation assembly 30 includes a rain and fog sprayer 31 connected to the mounting seat 10 and arranged above the placing seat 20, and the rain and fog sprayer 31 is used for spraying water to simulate the precipitation environment.

[0034] The device 100 for laser radar road test proposed in the technical solution of the present application. The design of the placing seat 20 should facilitate the quick installation and disassembly of the laser radar, and at the same time ensure the stability and accuracy of the laser radar during the test process, so that different laser radars can be replaced in the device for performance test, ensure the test accuracy, and improve the compatibility. The mounting seat 10 is the installation basis of other components of the device, and the bottom is provided with a connecting piece 40, which is designed to stably connect the device to the vehicle through the connecting piece 40. The rain and fog simulation assembly 30 is the core component of the device, which can test the performance of the laser radar in severe weather conditions (such as light rain, heavy rain and thick fog, etc.) by spraying rain and fog through the rain and fog sprayer 31.

[0035] One application process of the device proposed in this application is as follows: the entire device is installed on the vehicle 200 via the connector 40, and then the lidar to be tested is installed on the placement seat 20. The vehicle 200 is driven to the test section, the rain and fog simulation component 30 is activated, and the precipitation process under the preset precipitation mode begins; the vehicle 200 moves along the preset section, acquiring the detection data of the lidar, thereby enabling the analysis and evaluation of the detection performance of the tested lidar based on the detection data and the actual road conditions. Figure 2 The diagram shows the device installed on a vehicle.

[0036] Thus, the device 100 for road testing of lidar provided by the technical solution of this application can verify the detection performance of lidar under real vehicle driving conditions (including different motion states of lidar and various types and motion states of targets), and is not limited by weather.

[0037] See Figure 1 As shown, in some embodiments, the rain and fog simulation component 30 further includes a water storage component 32 and a water pump 33. The water inlet of the water pump 33 is connected to the water storage component 32 through a pipe, and the water outlet is connected to the rain and fog generator 31 through a pipe. The water pump 33 is used to pump water from the water storage component 32 to supply the rain and fog generator 31.

[0038] In this embodiment, the water storage component 32 is the water storage part of the rain and fog simulation component 30. It can be a container with sufficient capacity, such as a water storage bucket or tank, to ensure a stable water flow during long-term testing. The water pump 33 is the power component of the rain and fog simulation component 30. It draws water from the water storage component 32 and supplies it to the rain and fog generator 31. The water pump 33 can be an adjustable water pump, which can adjust its output flow rate according to the precipitation pattern and the specific needs of the rain and fog generator 31.

[0039] The water pump 33 and the fogger 31 are connected by a pipe, which transmits water flow. Thus, the water pump 33 may not be mounted on the mounting base 10. During testing, the water pump 33 can be installed inside the vehicle compartment through a long pipe connection. Similarly, the water storage unit 32 can also be installed inside the vehicle compartment, which facilitates the installation of the water storage unit 32 and the water pump 33 and ensures their stability.

[0040] See Figure 1 As shown, in some embodiments, the mist sprayer 31 includes a spray pipe 311 and nozzles 312. The spray pipe 311 is placed horizontally above the placement base 20 and is connected to the water pump 33 through a pipe; the number of nozzles 312 is provided in multiples, and the multiple nozzles 312 are evenly distributed on the spray pipe 311.

[0041] In this embodiment, the water pipe 311 is connected to the water pump 33 as the main channel for water flow transmission and receives water flow from the water pump 33. The spray head 312 is responsible for spraying the water flow in the water pipe 311 in a specific way to form a rain mist effect. The spray head 312 is an adjustable spray head that can be manually or automatically adjusted to adjust the fineness of water spraying. According to the test requirements, different intensities and types of precipitation processes can be simulated by the joint operation of multiple spray heads 312.

[0042] Based on this, by simulating different precipitation environments, test personnel can more comprehensively evaluate the performance of laser radar in adverse weather conditions, thereby providing strong support for the design and optimization of autonomous driving systems.

[0043] Referring to Figure 1 As shown in the drawings, in some embodiments, the rain mist device 31 is supported by a rain mist frame connected to the mounting seat 10; the rain mist frame includes a first frame body 34 and a second frame body 35. The first frame body 34 is vertically arranged on the mounting seat 10 adjacent to the placement seat 20; the second frame body 35 is arranged at one end of the first frame body 34 away from the mounting seat 10, and one side of the second frame body 35 is hinged to the first frame body 34, and the other side opposite to the hinged side is movably arranged with the water pipe 311; wherein when the second frame body 35 rotates relative to the first frame body 34, the second frame body 35 moves closer to or away from the placement seat 20 below.

[0044] In this embodiment, the first frame body 34 and the second frame body 35 are arranged to movably arrange the water pipe 311 above the placement seat 20. When the second frame body 35 rotates relative to the first frame body 34 to adjust the distance between the second frame body 35 and the placement seat 20, it can adapt to laser radars of different heights and sizes; and when the water pipe 311 rotates relative to the second frame body 35, the spray direction of the spray head 312 on the water pipe 311 can be adjusted to accurately spray rain mist to the laser radar window.

[0045] Specifically, the first frame body 34 includes two oppositely arranged support rods 341, which provide a stable base for supporting and connecting other components; the second frame body 35 includes a rotating rod 351 and two support arms 352 vertically connected to the rotating rod 351 and oppositely arranged; the rotating rod 351 is rotatably arranged between the two support rods 341 and the water pipe 311 is rotatably arranged between the two support arms 352 away from the end of the rotating rod 351; in this way, when the rotating rod 351 rotates between the two support rods 341, it can drive the two support arms 352 to rotate, thereby adjusting the distance between the second frame body 35 and the placement seat 20.

[0046] The first rotation locking structure 36 and the second rotation locking structure 37 are both used to ensure the stability and relative position between the components. Specifically, the first rotation locking structure 36 drives the rotating rod 351 to rotate relative to the support rod 341 and locks the relative position between the rotating rod 351 and the support rod 341, and the second rotation locking structure 37 drives the water spraying pipe 311 to rotate relative to the support arm 352 and locks the relative state between the water spraying pipe 311 and the support arm 352.

[0047] For example, the first rotation locking structure 36 can be a locking piece, such as a machine screw, arranged between the support rod 341 and the rotating rod 351, and the rotating rod 351 is provided with a knob at the end of the support rod 341, which is convenient for the user to rotate and adjust the rotation angle of the rotating rod 351 through the knob, and after rotation, the relative position between the rotating rod 351 and the support rod 341 is locked through the locking piece.

[0048] Referring to Figure 1 As shown in the drawings, in some embodiments, the mounting seat 10 is provided with a water collecting groove 11 corresponding to the rain and mist sprayer 31 and the mounting seat 10, and a water outlet hole 111 is formed in the water collecting groove 11. The water collecting groove 11 is used to collect the rain and mist sprayed by the rain and mist sprayer 31 and discharge it through the water outlet hole 111.

[0049] In this embodiment, the water collecting groove 11 can efficiently collect the rain and mist sprayed by the rain and mist sprayer 31 and discharge it through the water outlet hole 111. When arranged, the water outlet hole 111 can be arranged on one side adjacent to the vehicle drainage groove, so that the water discharged from the water collecting groove 11 directly enters the vehicle drainage groove and is discharged quickly and efficiently.

[0050] Further, the water outlet hole 111 is connected to the water storage member 32 through a pipeline, which is used to return the water in the water collecting groove 11 to the water storage member 32. Through this structure design, the water discharged through the water outlet hole 111 can be returned to the water storage member 32, which is beneficial to the recycling of water resources. For this application, even if the capacity of the water storage member 32 is not particularly large, the recycling of water resources can meet the demand of long-term continuous testing of the laser radar, reduce the operation cost, and improve the adaptability of the device.

[0051] Referring to Figure 1 As shown in the drawings, in some embodiments, the connecting member 40 is a suction cup arranged at the bottom of the mounting seat 10, and the number of the suction cup is at least two.

[0052] In this embodiment, the suction cups are typically made of a resilient material, such as rubber or silicone, to ensure that the mounting base 10 can be tightly attached to a smooth surface. It will be appreciated that the suction cups provide a durable and easy-to- detach feature, and that the attachment by suction does not damage the surface of the vehicle during installation and removal. Further, to ensure that the mounting base 10 is securely held in place, the provision of at least two suction cups provides sufficient suction to prevent the mounting base 10 from sliding or tilting during use.

[0053] Accordingly, the suction cup attachment provides a convenient and secure means of attachment. Furthermore, since the suction cups do not damage the mounting surface, they are also suitable for frequent installation and removal on a vehicle.

[0054] The above description is merely that of the preferred or example embodiments of the application and is not intended to limit the scope of the application. Thus, any and all modifications, variations or equivalent arrangements which do not depart from the spirit or scope of the underlying principles of the application should be considered within the scope of the application.

Claims

1. An apparatus for laser radar road testing, characterized by, The application relates to a rain and fog simulation device for a laser radar. The device comprises: a mounting base provided with a connecting member at the bottom for connecting the mounting base with a vehicle; a placing base arranged on the mounting base, which is used for mounting and arranging a laser radar; 2. The apparatus for ladar road testing of claim 1, wherein, a rain and fog simulation assembly, which comprises a rain and fog sprayer connected to the mounting base and arranged above the placing base, and is used for spraying rain and fog to simulate a precipitation environment.

3. The apparatus for ladar road testing of claim 2, wherein, The rain and fog simulation assembly further comprises a water storage member and a water pump, the water inlet end of the water pump is connected to the water storage member through a pipeline, and the water outlet end is connected to the rain and fog sprayer through a pipeline; the water pump is used for pumping and supplying water in the water storage member to the rain and fog sprayer.

4. The apparatus for ladar road testing of claim 2, wherein, The water pump is an adjustable water pump, and the output flow thereof can be adjusted. The rain and fog sprayer comprises: a water pipe transversely arranged above the placing base, which is connected to the water pump through a pipeline; 5. The apparatus for ladar road testing of claim 4, wherein, a plurality of spray heads uniformly arranged on the water pipe.

6. The apparatus for ladar road testing of claim 5, wherein, The spray head is an adjustable spray head, and the adjustable spray head can manually or automatically adjust the fineness of water spraying. The rain and fog sprayer is connected and supported on the mounting base through a rain and fog frame; the rain and fog frame comprises: a first frame body arranged vertically on the mounting base adjacent to the placing base; a second frame body arranged at one end of the first frame body away from the mounting base, one side of the second frame body is hinged to the first frame body, and the other side opposite to the hinged side is rotationally arranged with the water pipe; 7. The apparatus for ladar road testing of claim 6, wherein, wherein, when the second frame body rotates relative to the first frame body, the second frame body is relatively close to or away from the placing base below. The first frame body comprises two oppositely arranged supporting rods, the second frame body comprises a rotating rod and two supporting arms arranged opposite to each other and vertically connected to the rotating rod; the rotating rod is rotationally arranged between the two supporting rods and between the two supporting arms away from the rotating rod, and the water pipe is rotationally arranged between the two supporting arms away from the rotating rod; 8. The apparatus for ladar road testing of claim 2, wherein, wherein, a first rotation locking structure is arranged between the rotating rod and the supporting rod, and a second rotation locking structure is arranged between the water pipe and the supporting arm, the first rotation locking structure is used for driving the rotating rod to rotate relative to the supporting rod and locking the relative position between the rotating rod and the supporting rod, and the second rotation locking structure is used for driving the water pipe to rotate relative to the supporting arm and locking the relative state between the water pipe and the supporting arm.

9. The apparatus for ladar road testing of claim 8, wherein, A water collecting groove is formed on the mounting base corresponding to the rain and fog sprayer and the mounting base, and a water outlet hole is arranged on the water collecting groove, the water collecting groove is used for collecting rain and fog sprayed by the rain and fog sprayer and discharging the rain and fog through the water outlet hole.

10. The apparatus for ladar road testing of claim 1, wherein, The water outlet hole is connected to the water storage member through a pipeline, and is used for returning water in the water collecting groove to the water storage member. The connecting member is a suction disc arranged at the bottom of the mounting base, and the number of the suction disc is at least two.

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