Test bench and its usage method

Abstract

This application belongs to the field of optical display devices. More specifically, it relates to a test bench and its usage method. The test bench includes a support frame, a plurality of adjustment mechanisms, and a test camera. The adjustment mechanism includes a lifting drive member and a movable connection assembly mounted on the output end of the lifting drive member. The position of the support frame between the plurality of adjustment mechanisms is used to place the HUD. The test camera is mounted on the support frame and can move relative to the support frame. By adjusting the lifting drive members of the respective adjustment mechanisms, the angle of the glass on the test bench can be adjusted. When a new model of HUD needs to be tested, only the lifting drive members of the respective adjustment mechanisms need to be adjusted to adjust the angle of the glass on the test bench so that the angle of the glass matches that of the HUD. At the same time, by adjusting the position of the test camera on the support frame, the HUD can be tested. This saves the cost of redesigning and manufacturing a new test bench and conserves resources.

Description

Technical Field

[0001] This application belongs to the field of optical display devices, and more specifically, relates to a test bench and a method for using the same. Background Art

[0002] A windshield head-up display (HUD) in a vehicle can present information on the front windshield of the vehicle, avoiding the need for the driver to lower their head to view instrument information and ensuring driving safety.

[0003] There are various types of HUDs, and the glass angles matching the HUDs are also different. Currently, the test benches used for testing HUDs can only test a specific model of HUD. During use, the glass is fixed on the test bench at a specific angle. However, when a new model of HUD needs to be tested, a new test bench has to be redesigned and manufactured, increasing the development cost of the HUD and wasting resources. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a test bench and a method for using the same, so as to solve the problem in the prior art that the test bench for testing HUDs can only test a specific model of HUD. When a new model of HUD needs to be tested, a new test bench has to be redesigned and manufactured, increasing the development cost of the HUD and wasting resources.

[0005] To achieve the above purpose, the technical solution adopted in the embodiments of this application is as follows:

[0006] On the one hand, a test bench is provided, including:

[0007] A support frame;

[0008] A plurality of adjusting mechanisms, each adjusting mechanism includes a lifting driving member and a movable connection assembly installed at the output end of the lifting driving member. The movable connection assemblies of the respective adjusting mechanisms are respectively used to connect with the corresponding corners of the glass, and the position of the support frame between the plurality of adjusting mechanisms is used to place the HUD; and

[0009] A test camera, installed on the support frame, the test camera can move relative to the support frame, and the test camera is used to obtain the image displayed by the HUD on the glass.

[0010] In one embodiment, the movable connection assembly includes a first adjustment unit, a second adjustment unit, and a connecting member. The first adjustment unit has a first connecting portion perpendicular to the lifting direction of the lifting driving member and a second connecting portion parallel to the lifting direction of the lifting driving member. The second adjustment unit has a third connecting portion connected to the glass and a fourth connecting portion perpendicular to the third connecting portion;

[0011] The first connecting part is installed on the output end of the lifting driving part, and a support for supporting the third connecting part is arranged on the first connecting part. The support is in point contact with the third connecting part. One end of the connecting part is slidably connected to one of the second connecting part and the fourth connecting part, and the sliding direction is perpendicular to the lifting direction of the lifting driving part. The other of the second connecting part and the fourth connecting part is provided with a first waist-shaped hole, and the extending direction of the first waist-shaped hole is perpendicular to the sliding direction of one end of the connecting part. The other end of the connecting part passes through the first waist-shaped hole and is slidably connected to the first waist-shaped hole.

[0012] In one embodiment, the first waist-shaped hole is opened on the fourth connecting part, and a second waist-shaped hole with an extending direction perpendicular to that of the first waist-shaped hole is opened on the second connecting part. The connecting part passes through the first waist-shaped hole and the second waist-shaped hole respectively, and the connecting part is slidably connected to the first waist-shaped hole and the second waist-shaped hole respectively.

[0013] In one embodiment, the connecting part is a bolt, and the movable connection assembly further includes a nut for cooperating with the bolt to lock the first adjustment unit and the second adjustment unit.

[0014] In one embodiment, the second adjustment unit further includes a measurement base installed on the third connecting part.

[0015] In one embodiment, the test bench further includes two first support plates arranged in parallel at intervals and a second support plate connected between the two first support plates. The first support plates are installed on the support frame, and each adjustment mechanism is respectively installed on the corresponding first support plate. The second support plate is used for placing the HUD.

[0016] In one embodiment, the test bench further includes a plurality of positioning parts and a support frame for fixing the HUD. The HUD is installed on the support frame, the support frame is placed on the second support plate, and each positioning part passes through the support frame and the second support plate respectively.

[0017] In one embodiment, the test bench further includes a camera bracket, a guide part and a sliding part. The camera bracket is installed on the support frame, the guide part is installed on the camera bracket, the guide part is provided with a guiding part extending along the lifting direction parallel to the lifting driving part, and the sliding part is slidably connected to the guiding part. The test camera is installed on the sliding part.

[0018] In one embodiment, the test bench further includes a first fastener; a plurality of first mounting holes are arranged in an array on the support frame, a third waist-shaped hole extending along the length direction of the support frame is opened on the camera bracket, and the first fastener passes through the third waist-shaped hole and is locked in the corresponding first mounting hole; and / or,

[0019] The test bench further includes a second fastener; a plurality of second mounting holes are further formed in the camera bracket at intervals in the width direction of the support frame, and a fourth waist-shaped hole extending in the width direction of the support frame is formed in the guide member, and the second fastener passes through the corresponding fourth waist-shaped hole and is locked in the corresponding second mounting hole.

[0020] On the other hand, a method for using the test bench provided in any of the above embodiments is provided. The method for using includes the following steps:

[0021] Simulate the corner positions of the glass and the positions of the test cameras on 3D software and obtain the position points of the output ends of the respective lifting drive members;

[0022] Adjust the respective lifting drive members according to the position points of the output ends of the respective lifting drive members obtained by the 3D software to drive the corners of the glass to be located at preset positions;

[0023] Adjust the position of the test camera on the support frame according to the position of the test camera simulated by the 3D software;

[0024] Place the HUD on the support frame;

[0025] Conduct a power-on test on the HUD.

[0026] The test bench and the method for using the same provided in any of the above embodiments of the present application at least have the following beneficial effects: A plurality of adjusting mechanisms are provided on the support frame, and the lifting drive members of the respective adjusting mechanisms are connected to the corresponding corners of the glass through movable connection components. By adjusting the lifting drive members of the respective adjusting mechanisms, the angle of the glass on the test bench can be adjusted. When a new model of HUD needs to be tested, only the lifting drive members of the respective adjusting mechanisms need to be adjusted to adjust the angle of the glass on the test bench so that the angle of the glass matches that of the HUD, and at the same time, adjusting the position of the test camera on the support frame can test the HUD. The cost of redesigning and manufacturing the test bench is saved, and resources are conserved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic structural diagram of the test bench provided in the embodiment of the present application;

[0029] Figure 2 It is a schematic diagram of the connection between an adjusting mechanism and the glass provided in the embodiment of the present application;

[0030] Figure 3 is the front view of Figure 2 ;

[0031] Figure 4 is a schematic diagram of the adjusting mechanism for adjusting the angle of the glass Figure 1 ;

[0032] Figure 5 is a schematic diagram of the adjusting mechanism for adjusting the angle of the glass Figure 2 ;

[0033] Figure 6 is a schematic diagram of the connection between the HUD provided in the embodiment of the present application and the support frame;

[0034] Figure 7 is a schematic diagram of the connection between the test camera provided in the embodiment of the present application and the support frame;

[0035] Figure 8 is Figure 7 a partial enlarged schematic diagram at position A in

[0036] Among them, the main reference signs in the drawings are as follows:

[0037] 1, support frame; 11, top plate; 12, first support plate; 13, second support plate; 14, first mounting hole;

[0038] 2, adjusting mechanism; 21, lifting driving member; 22, movable connection assembly; 221, first adjustment unit; 2211, first connection part; 2212, second connection part; 22121, second waist-shaped hole; 22122, support member; 222, second adjustment unit; 2221, third connection part; 2222, fourth connection part; 22221, first waist-shaped hole; 223, connecting member; 23, nut; 24, measuring base;

[0039] 31, HUD; 32, support frame;

[0040] 4, test camera;

[0041] 51, camera bracket; 511, third waist-shaped hole; 512, second mounting hole; 52, guide member; 521, fourth waist-shaped hole; 53, sliding member;

[0042] 6, glass. Specific embodiments

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] In addition, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0046] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the phrases "in one embodiment" or "in some embodiments" appearing throughout the specification do not necessarily all refer to the same embodiment. In addition, in one or more embodiments, the specific features, structures, or characteristics may be combined in any suitable manner.

[0049] As described in the background art, in the prior art, the test bench for testing the HUD can only test a specific model of HUD. When a new model of HUD needs to be tested, a new test bench has to be redesigned and manufactured, which increases the development cost of the HUD and wastes resources.

[0050] To solve the above problems, an embodiment of the present application provides a test bench. Please refer to Figure 1 , the test bench includes a support frame 1, a plurality of adjustment mechanisms 2, and a test camera 4. Each adjustment mechanism 2 includes a lifting drive member 21 and a movable connection assembly 22 mounted on the output end of the lifting drive member 21. The movable connection assemblies 22 of each adjustment mechanism 2 are respectively used to connect with the corresponding corners of the glass 6. The position of the support frame 1 between the plurality of adjustment mechanisms 2 is used to place the HUD 31. The test camera 4 is mounted on the support frame 1, and the test camera 4 can move relative to the support frame 1. The test camera 4 is used to obtain the image displayed by the HUD 31 on the glass 6.

[0051] In the embodiment of the present application, a plurality of adjustment mechanisms 2 are provided on the support frame 1. The lifting drive members 21 of each adjustment mechanism 2 are connected to the corresponding corners of the glass 6 through the movable connection assemblies 22. By adjusting the lifting drive members 21 of each adjustment mechanism 2, the angle of the glass 6 on the test bench can be adjusted, so that the glass 6 can have more angles on the test bench. When a new model of HUD 31 needs to be tested, only need to place the HUD 31 of this model on the support frame 1, adjust the lifting drive members 21 of each adjustment mechanism 2 to adjust the angle of the glass 6 on the test bench, so that the angle of the glass 6 matches the HUD 31, and at the same time adjust the position of the test camera 4 on the support frame 1 to test the HUD 31, making the test bench standardized. It saves the cost of redesigning and manufacturing the test bench and saves resources.

[0052] In addition, the test bench provided in this embodiment can also be used by glass manufacturers to test the glass. Specifically, the glass 6 is installed on the test bench. By replacing the HUD 31 and correspondingly adjusting the angle of the glass 6 on the test bench, the projection effects of different HUD 31 on the same glass 6 can be tested. It is worth mentioning that the test bench provided in this embodiment can also be used for the test of displaying the HUD 31 at the exhibition, by adjusting the angle of the glass 6 on the test bench so that the glass 6 can match different models of HUD 31.

[0053] Among them, the glass 6 on the test bench can be metallic glass. The support frame 1 can be an approximate box structure, which can be built using aluminum materials to reduce the weight of the support frame 1. Casters can be respectively arranged at the four corners of the bottom of the support frame 1 to facilitate the movement of the test bench. Test instruments electrically connected to the test camera 4 can be installed inside the support frame 1. Through the test instruments, the imaging quality of the pictures taken by the test camera 4 can be obtained, and then the image display effect of the HUD 31 on the glass 6 can be obtained. In addition, control instruments such as control panels for controlling the test camera 4 can also be installed on the support frame 1. The staff can control the test camera 4 to take pictures by operating the control instruments.

[0054] The number of the adjusting mechanisms 2 can be three or four. Preferably, the number of the adjusting mechanisms 2 is four. The four adjusting mechanisms 2 are respectively connected to the four corners of the glass 6 to improve the stability of the glass 6 on the test bench, and at the same time, the angle adjustment range of the glass 6 on the test bench can be ensured to adapt to more models of HUD31. Among them, a servo electric cylinder can be used as the lifting driving member 21 to ensure the accuracy of the lifting of the corners of the glass 6. It can be understood that different HUD 31 can be placed at the position of the support frame 1 between the plurality of adjusting mechanisms 2, so that different models of HUD 31 can be tested. The test camera 4 can move relative to the support frame 1, so that the test camera 4 can adapt to the change of the eye box position of different models of HUD 31, and the position of the test camera 4 can match the angle of the HUD 31 and the corresponding glass 6.

[0055] In one embodiment, please refer to Figures 1 - 5 , as a specific implementation manner of the test bench provided by the embodiment of the present application, the movable connection assembly 22 includes a first adjustment unit 221, a second adjustment unit 222 and a connecting member 223. Refer to Figure 2 , the first adjustment unit 221 has a first connection portion 2211 perpendicular to the lifting direction of the lifting driving member 21 and a second connection portion 2212 parallel to the lifting direction of the lifting driving member 21. It should be noted that the lifting direction of the lifting driving member 21 is the lifting direction of the output end of the lifting driving member 21. The second adjustment unit 222 has a third connection portion 2221 connected to the glass 6 and a fourth connection portion 2222 perpendicular to the third connection portion 2221. Schematically, four connection blocks can be respectively arranged at the four corners of the glass 6, and one end of the third connection portion 2221 is fixed to one of the connection blocks.

[0056] In a possible implementation, the first connecting portion 2211 and the second connecting portion 2212 can be formed into an integral part by a one-time forming process, and the third connecting portion 2221 and the fourth connecting portion 2222 can also be formed into an integral part by a one-time forming process. In another possible implementation, the first connecting plate can be used as the first connecting portion 2211, and the first adjusting block can be installed on the first connecting plate as the second connecting portion 2212; the second connecting plate can be used as the third connecting portion 2221, and the second adjusting block can be installed on the second connecting plate as the fourth connecting portion 2222.

[0057] The first connecting portion 2211 is installed on the output end of the lifting driving member 21, and a support member 22122 for supporting the third connecting portion 2221 is provided on the first connecting portion 2211. Refer to Figure 3 , the support member 22122 is in point contact with the third connecting portion 2221. Among them, the support member 22122 is located at one end of the first connecting portion 2211 away from the lifting driving member 21, and the support member 22122 can support the bottom surface of the third connecting portion 2221. Exemplarily, a support ball can be used as the support member 22122, and a mounting seat is provided on the first connecting portion 2211, and the support ball is rotatably installed on the mounting seat. Alternatively, a conical structure can also be provided on the first connecting portion 2211 as the support member 22122, and the third connecting portion 2221 is supported by the tip of the conical structure.

[0058] One end of the connecting member 223 is slidably connected to one of the second connecting portion 2212 and the fourth connecting portion 2222, and the sliding direction is perpendicular to the lifting direction of the lifting driving member 21. Correspondingly, a first waist-shaped hole 22221 is opened in the other of the second connecting portion 2212 and the fourth connecting portion 2222. Refer to Figure 4 , the extending direction of the first waist-shaped hole 22221 is perpendicular to the sliding direction of one end of the connecting member 223, and the other end of the connecting member 223 passes through the first waist-shaped hole 22221 and is slidably connected to the first waist-shaped hole 22221.

[0059] Exemplarily, one end of the connecting member 223 can be slidably connected to the second connecting portion 2212. For example, a slide rail extending in the horizontal direction can be provided on the second connecting portion 2212, and a slider is slidably installed on the slide rail. One end of the connecting member 223 can be hingedly installed on the slider. Correspondingly, the first waist-shaped hole 22221 is opened in the fourth connecting portion 2222. Among them, a shaft body is provided at the other end of the connecting member 223, and the shaft body passes through the first waist-shaped hole 22221 and is slidably connected to the first waist-shaped hole 22221. In another possible implementation, one end of the connecting member 223 can be slidably connected to the fourth connecting portion 2222, and the first waist-shaped hole 22221 is opened in the second connecting portion 2212.

[0060] Taking the first kidney-shaped hole 22221 opened on the fourth connecting part 2222 as an example, please refer to Figures 3 - 5 , the support member 22122 supports the third connecting part 2221 so that the angle of the second adjusting unit 222 can change relative to the first adjusting unit 221. When the output end of one of the lifting driving members 21 rises or falls, under the limiting action of the remaining corners of the glass 6, one end of the connecting member 223 slides synchronously relative to the second connecting part 2212, and the other end of the connecting member 223 moves synchronously in the first kidney-shaped hole 22221, so that the second adjusting unit 222 can rotate on the support member 22122, avoiding interference between the lifting driving member 21 and the corners of the glass 6.

[0061] Through the above settings, when the output end of the lifting driving member 21 rises or falls, it can drive the corresponding corners of the glass 6 to rise and fall, thereby adjusting the angle of the glass 6 on the test bench. In addition, the above settings can avoid interference between the output end of the lifting driving member 21 and the corners of the glass 6 when rising and falling.

[0062] In other embodiments, the output end of the lifting driving member 21 can be connected to the corner of the glass 6 through a spherical joint, which is not uniquely limited herein; wherein, the spherical joint can be regarded as the movable connection assembly.

[0063] In a specific embodiment, please refer to Figures 1 - 5 , as a specific implementation manner of the test bench provided by the embodiment of the present application, the first kidney-shaped hole 22221 is opened on the fourth connecting part 2222, and a second kidney-shaped hole 22121 with an extending direction perpendicular to the first kidney-shaped hole 22221 is opened on the second connecting part 2212. Refer to Figure 5 , the connecting member 223 is respectively arranged through the first kidney-shaped hole 22221 and the second kidney-shaped hole 22121, and the connecting member 223 is respectively slidably connected to the first kidney-shaped hole 22221 and the second kidney-shaped hole 22121. Among them, the lengths of the first kidney-shaped hole 22221 and the second kidney-shaped hole 22121 can be set as required, which is not uniquely limited herein.

[0064] In this embodiment, by opening the second kidney-shaped hole 22121 on the second connecting part 2212 and arranging the connecting member 223 through the second kidney-shaped hole 22121, one end of the connecting member 223 can slide relative to the second connecting part 2212. At the same time, the structure of the second connecting part 2212 is relatively simple, thereby reducing the production cost of the test bench.

[0065] In a more specific embodiment, please refer to Figures 1 - 5, as a specific implementation of the test bench provided in the embodiments of the present application, the connecting member 223 is a bolt, and the movable connection assembly 22 further includes a nut 23, and the nut 23 is used to cooperate with the bolt to lock the first adjustment unit 221 and the second adjustment unit 222.

[0066] It can be understood that before the output end of the lifting driving member 21 is lifted or lowered, the nut 23 of the corresponding movable connection assembly 22 is loosened, so that when the output end of the lifting driving member 21 is lifted or lowered, the bolt can move relative to the second waist-shaped hole 22121 and the first waist-shaped hole 22221, that is, the movable connection assembly 22 has an adjustment space. When the lifting driving member 21 adjusts the corner of the glass 6 to a preset height, the nut 23 can be tightened to fix the first adjustment unit 221 and the second adjustment unit 222, so as to avoid the glass 6 shaking on the test bench due to the fitting clearance between the bolt and the second waist-shaped hole 22121 and the first waist-shaped hole 22221.

[0067] In this embodiment, the connecting member 223 is set as a bolt and the nut 23 cooperating with the bolt is provided. When the nut 23 is in a loosened state, an adjustment space for the movable connection assembly 22 can be ensured. At the same time, the nut 23 and the head of the bolt can limit the first adjustment unit 221 and the second adjustment unit 222, so as to avoid the second adjustment unit 222 falling off the support member 22122 on the first connection portion 2211. When the lifting driving member 21 adjusts the corner of the glass 6 to a preset height to adjust the angle of the glass 6, the first adjustment unit 221 and the second adjustment unit 222 can be locked by tightening the nut 23, so as to avoid the glass 6 shaking on the test bench.

[0068] In a specific embodiment, please refer to Figures 1 - 5 , as a specific implementation of the test bench provided in the embodiments of the present application, the second adjustment unit 222 further includes a measurement base 24 installed on the third connection portion 2221. Among them, refer to Figure 3 , the measurement base 24 can be an approximately frustum-shaped structure, and it is installed on the side of the fourth connection portion 2222 facing the glass 6.

[0069] By providing the measurement base 24, after the lifting driving member 21 adjusts the height of one of the corners of the glass 6, the position of the measurement base 24 can be measured. When the difference between the position of the measurement base 24 and the set position is greater than or equal to a preset threshold value such as 0.2 mm, the lifting driving member 21 is controlled to finely adjust the height of the corner of the glass 6, so that the difference between the actual position of the measurement base 24 and the set position is less than 0.2 mm, ensuring the accurate angle of the glass 6 on the test bench.

[0070] In an embodiment, please refer to Figure 1 and Figure 6, as a specific implementation of the test bench provided in the embodiments of the present application, the test bench further includes two first support plates 12 arranged in parallel at intervals and a second support plate 13 connected between the two first support plates 12. The first support plates 12 are installed on the support frame 1, and each adjustment mechanism 2 is respectively installed on the corresponding first support plate 12, and the second support plate 13 is used to place the HUD 31.

[0071] Wherein, each first support plate 12 is perpendicular to the top plate 11 of the support frame 1. When the number of adjustment mechanisms 2 is four, two of the adjustment mechanisms 2 are installed on one of the first support plates 12 to respectively connect two corners on one side of the glass 6, and the other two adjustment mechanisms 2 are installed on the other first support plate 12 to respectively connect two corners on the other side of the glass 6. The height at which each adjustment mechanism 2 is installed on the corresponding first support plate 12 can be set as required and is not uniquely limited herein. The extending direction of the second support plate 13 is parallel to the top plate 11 of the support frame 1, so as to ensure the stability of the HUD 31 placed on the second support plate 13.

[0072] In this embodiment, by setting the first support plates 12, the installation height of each adjustment mechanism 2 can be ensured respectively. When the HUD 31 is placed on the second support plate 13, the distance between the HUD 31 and the glass 6 can be reduced, which is convenient for the HUD 31 to project image information onto the glass 6. In addition, setting the second support plate 13 between the two first support plates 12 can improve the structural strength of the two first support plates 12, so that the first support plates 12 are not easily deformed during long-term use.

[0073] In a specific embodiment, please refer to Figure 6 , as a specific implementation of the test bench provided in the embodiments of the present application, the test bench further includes a plurality of positioning members (not shown in the figure) and a support frame 32 for fixing the HUD 31. The HUD 31 is installed on the support frame 32, the support frame 32 is placed on the second support plate 13, and each positioning member respectively passes through the support frame 32 and the second support plate 13.

[0074] Wherein, the support frame 32 includes a bottom plate and two support portions arranged on the bottom plate. The HUD 31 is installed at one end of the two support portions away from the bottom plate. Exemplarily, a plurality of first positioning holes are opened in the bottom plate of the support frame 32, and second positioning holes are respectively opened at positions on the second support plate 13 opposite to the first positioning holes. A positioning pin can be used as the positioning member. After the support frame 32 fixed with the HUD 31 is placed on the second support plate 13, the positioning pins respectively pass through the first positioning holes and extend into the corresponding second positioning holes. Through the above settings, the stability of the HUD 31 on the second support plate 13 can be ensured, and the HUD 31 is prevented from displacing on the second support plate 13.

[0075] In one embodiment, refer to Figure 1 、 Figure 7 and Figure 8 . As a specific implementation of the test bench provided in the embodiments of the present application, the test bench further includes a camera bracket 51, a guide member 52, and a sliding member 53. The camera bracket 51 is installed on the support frame 1, and the guide member 52 is installed on the camera bracket 51. Exemplarily, the camera bracket 51 can be fastened to the top plate 11 of the support frame 1 through fasteners, and the guide member 52 can be fastened to the top surface of the camera bracket 51 through fasteners. The guide member 52 is provided with a guiding portion extending along the lifting direction parallel to the lifting driving member 21, and the sliding member 53 is slidably connected to the guiding portion. The test camera 4 is installed on the sliding member 53. Schematically, a slideway can be opened on the guide member 52 as the guiding portion, and a slider can be used as the sliding member 53, and the slider is slidably installed on the slideway of the guide member 52. Further, a waist-shaped hole extending along the sliding direction of the sliding member 53 can be opened on the slideway of the guide member 52. When the sliding member 53 slides to a set height, fasteners can be used to pass through the waist-shaped hole of the guide member 52 and be screwed into the sliding member 53 to lock the guide member 52 and the sliding member 53.

[0076] Through the above design, the test camera 4 can be lifted relative to the support frame 1, so that the image information projected by the HUD 31 on the glass 6 can be simulated by adjusting the height of the test camera 4, and further it is convenient to test the HUD 31 or the glass 6 from different perspectives.

[0077] In a specific embodiment, refer to Figure 1 、 Figure 7 and Figure 8 . As a specific implementation of the test bench provided in the embodiments of the present application, the test bench further includes a first fastener (not shown in the figure). A plurality of first mounting holes 14 are arranged in an array on the support frame 1. Specifically, the plurality of first mounting holes 14 are distributed in multiple rows and multiple columns on the top plate 11 of the support frame 1. A third waist-shaped hole 511 extending along the length direction of the support frame 1 is opened on the camera bracket 51. Refer to Figure 7 . The bottom of the camera bracket 51 is provided with a flanging extending outward. When the camera bracket 51 is placed on the support frame 1, its flanging fits with the top plate 11. Third waist-shaped holes 511 can be opened on each flanging respectively. Among them, the number of the third waist-shaped holes 511 on the flanging is not restrictive, and those skilled in the art can set it according to needs. Bolts can be used as the first fasteners and the number of the first fasteners is the same as the number of the third waist-shaped holes 511. During the assembly process, the first fasteners pass through the third waist-shaped holes 511 and are locked in the corresponding first mounting holes 14.

[0078] By locking the camera bracket 51 with different first mounting holes 14, the position of the test camera 4 on the support frame 1 can be set. In addition, when fine-tuning the position of the test camera 4 is required, the first fastener can be loosened and the camera bracket 51 can be pushed so that the camera bracket 51 slides relative to the support frame 1 along the extending direction of the third kidney-shaped hole 511. That is to say, the camera bracket 51 can be positionally fine-tuned relative to the support frame 1 along the length direction of the support frame 1.

[0079] In another possible implementation, the test bench further includes a second fastener (not shown in the figure), and a bolt can be used as the second fastener. A plurality of second mounting holes 512 are also formed in the camera bracket 51 at intervals along the width direction of the support frame 1, and a fourth kidney-shaped hole 521 extending along the width direction of the support frame 1 is formed in the guide member 52. The second fastener passes through the corresponding fourth kidney-shaped hole 521 and is locked in the corresponding second mounting hole 512.

[0080] Among them, the guide member 52 can be an approximate "L" - shaped structure, the fourth kidney-shaped hole 521 can be formed on the horizontal section of the "L" - shaped structure, and the slideway can be formed on the vertical section of the "L" - shaped structure. The number of the fourth kidney-shaped holes 521 can be one or more. Correspondingly, the plurality of second mounting holes 512 can be distributed in one row or multiple rows on the camera bracket 51 along the width direction of the support frame 1.

[0081] By locking the guide member 52 with different second mounting holes 512, the position of the test camera 4 on the camera bracket 51 can be adjusted. When fine-tuning the position of the test camera 4 is required, the second fastener can be loosened and the guide member 52 can be pushed so that the guide member 52 moves relative to the camera bracket 51 along the extending direction of the fourth kidney-shaped hole 521. That is to say, the position of the guide member 52 can be fine-tuned relative to the support frame 1 along the width direction of the support frame 1.

[0082] The above settings can make the position of the test camera 4 match the model of the HUD 31 and the angle of the glass 6, which is convenient for testing different models of HUD 31 or glass 6.

[0083] Based on the above embodiments, the present application further provides a method for using the test bench provided in any of the above embodiments. The method for use includes the following steps:

[0084] Simulate the corner positions of the glass 6 and the position of the test camera 4 on 3D software and obtain the position points of the output ends of the respective lifting drive members 21, where the 3D software can be three-dimensional drawing software.

[0085] Adjust each lifting drive member 21 according to the position points of the output ends of each lifting drive member 21 obtained from 3D software to drive the corners of the glass 6 to be located at preset positions. Specifically, when the movable connection assembly 22 includes a first adjustment unit 221, a second adjustment unit 222, and a connecting member 223 and a nut 23 is provided on the connecting member 223, it is necessary to loosen the nuts 23 of each movable connection assembly 22 so that each movable connection assembly 22 has an adjustment space when the lifting drive member 21 drives the corners of the glass 6 to lift. The controller such as a PLC (Programmable Logic Controller) can be used to control each lifting drive member 21 to drive the corresponding corners of the glass 6 to lift respectively to adjust the angle of the glass 6 on the test bench.

[0086] It is worth mentioning that when the movable connection assembly 22 is provided with a measurement base 24, after the height of the corners of the glass 6 is adjusted, the deviation between the position of each measurement base 24 and the set position is measured. For example, the deviation between the actual three-dimensional coordinates of each measurement base 24 and the set three-dimensional coordinates can be measured. Exemplarily, a three-dimensional coordinate can be established on 3D software and the three-dimensional coordinate value of the measurement base 24 when the corners of the glass 6 are located at the simulated position is read as the set position. The actual three-dimensional coordinate value of the measurement base 24 after the height of the corners of the glass 6 is adjusted is obtained by a measuring instrument such as a coordinate measuring machine as the actual three-dimensional coordinate. When the deviation amount is greater than or equal to a preset threshold such as 0.2 mm, the position of the corners of the glass 6 is finely adjusted by the lifting drive member 21 to ensure the accurate angle of the glass 6 on the test bench. After the angle of the glass 6 on the test bench is accurate, the nuts 23 of each movable connection assembly 22 are tightened to lock each movable connection assembly 22.

[0087] Adjust the position of the test camera 4 on the support frame 1 according to the position of the test camera 4 simulated by 3D software. Among them, after the position of the test camera 4 is adjusted, the deviation between the actual three-dimensional coordinates of the test camera 4 and the set three-dimensional coordinates can be measured. Among them, the acquisition methods of the actual three-dimensional coordinates and the set three-dimensional coordinates of the test camera 4 can be the same as the acquisition methods of the actual three-dimensional coordinates and the set three-dimensional coordinates of the above-mentioned measurement base 24, which will not be elaborated here. When the deviation amount is greater than or equal to a preset threshold such as 0.2 mm, the position of the test camera 4 is finely adjusted to ensure the accurate position of the test camera 4.

[0088] Place the HUD 31 on the support frame 1.

[0089] Conduct a power-on test on the HUD 31. Among them, the HUD 31 can be connected to an external device such as a computer, and the HUD 31 is powered on and tested through the external device to ensure the reliable operation of the HUD 31.

[0090] When it is necessary to replace the HUD 31 with other models, just repeat the above steps.

[0091] In this embodiment, by adopting the above usage method, the test bench can be matched with different models of HUD 31, and at the same time, the angle of the glass 6 on the test bench and the position of the test camera 4 can be ensured to be accurate.

[0092] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A test bench, characterized in that, Comprising: A support frame; A plurality of adjusting mechanisms, each adjusting mechanism including a lifting driving member and a movable connection assembly mounted on the output end of the lifting driving member, the movable connection assemblies of the respective adjusting mechanisms being respectively used for connecting with the corresponding corners of the glass, and the position of the support frame between the plurality of adjusting mechanisms being used for placing the HUD; And A test camera, mounted on the support frame, the test camera being capable of moving relative to the support frame, and the test camera being used for acquiring an image of the HUD displayed on the glass; The movable connection assembly includes a first adjustment unit, a second adjustment unit and a connecting member. The first adjustment unit has a first connection portion perpendicular to the lifting direction of the lifting driving member and a second connection portion parallel to the lifting direction of the lifting driving member. The second adjustment unit has a third connection portion connected to the glass and a fourth connection portion perpendicular to the third connection portion; The first connection portion is mounted on the output end of the lifting driving member, and a support member for supporting the third connection portion is provided on the first connection portion. The support member is in point contact with the third connection portion. One end of the connecting member is slidably connected to one of the second connection portion and the fourth connection portion, and the sliding direction is perpendicular to the lifting direction of the lifting driving member. The other of the second connection portion and the fourth connection portion is provided with a first waist-shaped hole, and the extending direction of the first waist-shaped hole is perpendicular to the sliding direction of one end of the connecting member. The other end of the connecting member passes through the first waist-shaped hole and is slidably connected to the first waist-shaped hole.

2. The test bench according to claim 1, characterized in that, The first waist-shaped hole is opened on the fourth connection portion, and a second waist-shaped hole with an extending direction perpendicular to the first waist-shaped hole is opened on the second connection portion. The connecting member passes through the first waist-shaped hole and the second waist-shaped hole respectively, and the connecting member is slidably connected to the first waist-shaped hole and the second waist-shaped hole respectively.

3. The test bench according to claim 2, characterized in that, The connecting member is a bolt, and the movable connection assembly further includes a nut, and the nut is used for cooperating with the bolt to lock the first adjustment unit and the second adjustment unit.

4. The test bench according to claim 1, characterized in that, The second adjustment unit further includes a measurement base mounted on the third connection portion.

5. The test bench according to claim 1, characterized in that, The test bench further includes two first support plates arranged in parallel at intervals and a second support plate connected between the two first support plates. The first support plates are mounted on the support frame, and the respective adjusting mechanisms are respectively mounted on the corresponding first support plates. The second support plate is used for placing the HUD.

6. The test bench according to claim 5, characterized in that The test bench further includes a plurality of positioning members and a support frame for fixing the HUD. The HUD is mounted on the support frame, the support frame is placed on the second support plate, and the respective positioning members pass through the support frame and the second support plate respectively.

7. The test bench according to claim 1, characterized in that, The test bench further includes a camera bracket, a guide member, and a sliding member. The camera bracket is mounted on the support frame. The guide member is mounted on the camera bracket. The guide member is provided with a guide portion extending along a lifting direction parallel to that of the lifting driving member. The sliding member is slidably connected to the guide portion. The test camera is mounted on the sliding member.

8. The test bench according to claim 7, characterized in that, The test bench further includes a first fastener. A plurality of first mounting holes are formed in the support frame in an array. A third slotted hole extending along the length direction of the support frame is formed in the camera bracket. The first fastener passes through the third slotted hole and is locked in a corresponding first mounting hole; and / or, The test bench further includes a second fastener. A plurality of second mounting holes are formed in the camera bracket at intervals along the width direction of the support frame. A fourth slotted hole extending along the width direction of the support frame is formed in the guide member. The second fastener passes through a corresponding fourth slotted hole and is locked in a corresponding second mounting hole.

9. A method for using the test bench according to any one of claims 1-8, characterized in that, The usage method includes the following steps: Simulate the corner positions of the glass and the position of the test camera on 3D software to obtain the position points of the output ends of the respective lifting driving members; Adjust the respective lifting driving members according to the position points of the output ends of the respective lifting driving members obtained by the 3D software to drive the corners of the glass to a preset position; Adjust the position of the test camera on the support frame according to the position of the test camera simulated by the 3D software; Place the HUD on the support frame; Conduct a power-on test on the HUD.

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