Screen test bench

Abstract

The invention discloses a test rack for a screen, the test rack for the screen comprises a rack main body and a test device arranged on the rack main body, and a plurality of screen mounting mechanisms and image recognition units in one-to-one correspondence with the screen mounting mechanisms are arranged in a test box. During use, the screen mounting mechanism can switch the first station (vertical posture) and the second station (horizontal posture) to realize multi-scene testing, and testers are allowed to simulate screen states of the new energy vehicle in different use scenes. For example, a manual function test can be carried out in a vertical posture test, and an automatic test can be carried out in a horizontal posture test. The image recognition unit can ensure that when a screen is located at any station, the screen can be comprehensively covered and accurately captured through a position adjusting mechanism and an image probe, multiple scenes can be tested, frequent mutual switching of multiple devices is not needed, the testing efficiency of engineers can be improved, and the research and development cost can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of screen testing, and in particular to a test bench for a screen. Background Art

[0002] Screen testing is a comprehensive process designed to evaluate the display effects and performance of the screen under various conditions, including brightness testing, contrast testing, color testing, resolution testing, response time testing, viewing angle testing, bad pixel detection and other tests.

[0003] The purpose of brightness test is to evaluate the luminous ability of the screen under different brightness settings. Usually, a brightness meter (such as a photoelectric measuring instrument) is placed at a specific position in front of the screen to measure the light intensity emitted by the screen. Contrast test is used to evaluate the difference between the screen when displaying bright and dark parts. Usually, in a dark room environment, the brightness value when the screen is completely black is measured first, and then the brightness value when the screen is completely white is measured. Color test is used to evaluate the color accuracy, color gamut range and color uniformity of the screen. Usually, professional equipment such as color analyzer is used to measure the chromaticity coordinates, color gamut range and other parameters of various colors displayed on the screen, and compare them with the standard color space. Resolution test is used to evaluate the clarity and detail expression of the screen display image. Usually, a special resolution test chart is used, which contains lines and patterns of different thicknesses. The chart is displayed on the screen. The actual resolution of the screen is judged based on the resolution corresponding to the clearly distinguishable lines and patterns. Response time test is used to evaluate the performance of the screen when displaying dynamic content and reduce the phenomenon of smearing and afterimage. Usually, a high-speed camera or professional test instrument is used to record the time required for the screen to switch from one state to another. The viewing angle test refers to playing fast-moving videos or running action games on the screen, observing whether the edges of objects in the picture are blurred or smeared, and evaluating the visibility and color fidelity of the screen at different viewing angles. Use professional viewing angle measurement instruments to measure the changes in the brightness and color parameters of the screen at different angles to determine the viewing angle range of the screen. The bad pixel test is mainly used to check whether there are pixels on the screen that are always on or always off (i.e. bright spots or dark spots). Set the screen to a solid color background such as all black, all white, all red, all green, and all blue, and then carefully observe whether there are bright spots or dark spots on the screen. Usually, special bad pixel detection software is used. The software will display various colors and patterns on the screen to help users detect bad pixels more comprehensively.

[0004] The above-mentioned various performance tests on the screen all require the use of special equipment for testing. Different types of tests require different equipment. Not only is the process complicated, but it also causes high costs for screen testing.

[0005] With the continuous development of new energy vehicle technology, the smart cockpit, as a core component of the vehicle, integrates many advanced electronic systems and human-computer interaction interfaces. The screen is the main hardware of the human-computer interaction interface in new energy vehicles, and the performance of the screen directly affects the user experience of human-computer interaction in new energy vehicles. In this regard, the screens used in new energy vehicles will be tested for their own performance and the performance associated with the on-board equipment before being installed. This kind of test usually requires the use of multiple devices, which not only affects the assembly efficiency of new energy vehicles, but also has high costs.

[0006] Therefore, the existing technology of new energy vehicle screen testing has the problems of low testing efficiency and high cost. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of low assembly efficiency and high cost in the prior art of new energy vehicle screen testing.

[0008] The present invention provides a test bench for a screen, comprising a bench main body and a test device arranged on the bench main body, wherein the test device comprises a test box with an opening on one side, wherein a plurality of screen mounting mechanisms and image recognition units corresponding to each screen mounting mechanism are arranged in the test box; wherein,

[0009] Each screen installation mechanism has a first station and a second station that can be switched with each other, the first station is used to install the screen in a vertical posture, and the second station is used to install the screen in a horizontal posture; each image recognition unit includes a position adjustment mechanism installed on the inner wall of the test box, and an image probe installed on the position adjustment mechanism; wherein,

[0010] When any screen is mounted on the screen mounting mechanism at the second station, the image probe of the corresponding image recognition unit faces the corresponding screen so that the irradiation range of the image probe covers the screen.

[0011] With the above technical solution, the screen installation mechanism can switch between the first position (vertical posture) and the second position (horizontal posture), allowing testers to simulate the screen status of new energy vehicles in different usage scenarios. For example, the vertical posture test can be used for manual functional testing, while the horizontal posture test can be used for automated testing. The image recognition unit uses a position adjustment mechanism and an image probe to ensure that the screen is fully covered and accurately captured when it is in any position. This helps to discover potential problems with the screen at different angles and postures, such as touch delays, color distortion, etc.

[0012] In addition, multiple screen installation mechanisms and image recognition units are set in the test box, allowing multiple screens to be tested at the same time, shortening the test cycle, improving test efficiency, and helping new energy vehicle manufacturers to speed up product development and market launch. When any screen is installed on the screen installation mechanism at the second workstation, the image recognition unit can ensure full coverage of the screen, which helps testers evaluate the display effect, color accuracy and other human-computer interaction performance indicators of the screen at different angles and postures. The test box can provide a relatively closed and stable test environment for the screen, reducing the impact of external factors (such as light, temperature, etc.) on the test results, and helping to improve the accuracy and reliability of the test.

[0013] Therefore, the test bench for the screen provided by the present invention can reduce the cost of the test equipment while improving the test efficiency and test accuracy.

[0014] According to the screen test bench provided by the present invention, a slide rail extending along the length direction of the test box is arranged at the bottom of the test box, each screen mounting mechanism is slidably connected to the slide rail, and the screen mounting mechanism includes a first bracket and a second bracket; wherein,

[0015] When one end of at least one of the first bracket and the second bracket is slidably connected to the slide rail, the other end has a connecting portion extending in the vertical direction to form a first work station; or

[0016] One end of the first bracket is slidably connected to the slide rail, one end of the second bracket is detachably connected to the other end of the first bracket, and the other end of the second bracket has a connecting portion extending in a horizontal direction to form a second workstation.

[0017] With the above technical solution, since the screen mounting mechanism is slidably connected to the slide rail, and the screen mounting mechanism includes a first bracket and a second bracket, the screen mounting mechanism can easily switch between the first position (vertical posture) and the second position (horizontal posture), and can simulate more usage scenarios, such as simulating the driver to view the instrument panel during normal driving, and operating the central control screen when the vehicle is stationary, etc. And due to the adjustability of the bracket, the test bench can adapt to screens of various sizes and types to meet the screen testing requirements of different parts and functions in new energy vehicles. The slide rail design enables the screen mounting mechanism to slide along the length direction of the test box, so as to be positioned at the test position, which can simulate the actual usage scenarios of the screen in new energy vehicles (such as the driver's perspective, the passenger's perspective, etc.), and can more realistically reflect the performance of the screen in human-computer interaction, thereby providing more valuable test data for new energy vehicle manufacturers.

[0018] According to the test bench of the screen provided by the present invention, the first bracket and the second bracket are set as "L"-shaped brackets, and the first bracket and the second bracket respectively include a first bending portion and a second bending portion, and the first bending portion and the second bending portion are both formed with a strip hole; wherein,

[0019] When the first bent portion of the first bracket and / or the second bracket is slidably connected to the slide rail in the horizontal direction, the second bent portion of the first bracket and / or the second bracket extends in the vertical direction, and the strip-shaped hole extending in the vertical direction on the second bent portion constitutes a first work station;

[0020] When the first bent portion of the first bracket is slidably connected to the slide rail in the horizontal direction, the first bent portion of the second bracket is slidably connected to the second bent portion of the first bracket in the vertical direction, and the second bent portion of the second bracket extends in the horizontal direction. The strip hole extending in the horizontal direction on the second bent portion constitutes a second workstation.

[0021] By adopting the above technical solution, through the "L"-shaped design of the first bracket and the second bracket and the setting of the strip hole, the first bracket and the second bracket can be assembled in different assembly methods to provide different installation positions, that is, when one end of at least one of the first bracket and the second bracket is slidably connected to the slide rail, the other end has a connection portion extending in the vertical direction to form a first position, one end of the first bracket is slidably connected to the slide rail, one end of the second bracket is detachably connected to the other end of the first bracket, and the other end of the second bracket has a connection portion extending in the horizontal direction to form a second position. This structure is not only simple, but also the connection position can be adjusted by using the strip hole, and it is more adaptable.

[0022] According to the screen test bench provided by the present invention, the screen mounting mechanism further comprises a slider, the slider is slidably connected to the slide rail, and the first bending portion of the first bracket and / or the second bracket is detachably connected to the slider.

[0023] With the above technical solution, the first bent portion of the first bracket and / or the second bracket is connected to the slider in a detachable connection manner, and the sliding connection of the slider on the slide rail allows the screen mounting mechanism to move quickly and smoothly in the test box, so as to quickly adjust to the required test position. When the bracket needs to be replaced or adjusted, there is no need for a complicated disassembly process, and it only needs to be simply disassembled and reinstalled, which helps to quickly adapt to the testing needs of screens of different sizes and types.

[0024] According to the screen test bench provided by the present invention, the screen mounting mechanism includes a screen mounting seat and a rotating connecting component; wherein,

[0025] The connection end of the rotating connection component is movably arranged at the bottom of the test box along the length direction of the test box, and the screen mounting seat is flippably connected to the rotating end of the rotating connection component around the length direction of the test box; wherein,

[0026] When the screen mounting seat is rotated to a vertical state, it forms a first working position, and when the screen mounting seat is rotated to a horizontal state, it forms a second working position.

[0027] By adopting the above technical solution, the screen mount can be flipped around the length direction of the test box to achieve switching from a vertical state (first station) to a horizontal state (second station). During the process, the test bench can simulate the posture of the screen in new energy vehicles in different usage scenarios without disassembling the components. The connecting end of the rotating connecting component can be moved along the length direction of the test box, so that the screen mount can not only switch between vertical and horizontal states, but also adjust its position along the length direction of the test box to meet different test requirements. During use, by adjusting the position of the rotating connecting component and the screen mount, the tester can quickly position the screen to the required test position, reducing the test preparation time and improving the test efficiency.

[0028] According to the screen test bench provided by the present invention, the rotating connection component includes a rotating bracket connected to the moving seat, the rotating bracket includes a sliding shaft extending along the length direction of the test box, an arc groove is formed on the screen mounting seat, and the sliding shaft is slidably connected to the arc groove; wherein,

[0029] The screen mounting seat slides relative to the sliding shaft through the arc groove to switch between the first position and the second position; and,

[0030] The arc angle of the arc groove is greater than or equal to 90°.

[0031] By adopting the above technical solution, the screen mount can switch between the first position (vertical state) and the second position (horizontal state) through the sliding connection between the arc groove and the sliding shaft. Not only is the structure simple, but also the flexibility is high. The arc of the arc groove is greater than or equal to 90°, so that the screen mount can adjust the posture within a wider range, which helps to more comprehensively evaluate the performance of the screen at different angles. The rotating bracket and the sliding shaft provide stable support for the screen mount, ensuring the stability of the screen during the switching process between different positions. The sliding connection of the sliding shaft in the arc groove allows the screen mount to be fine-tuned to meet the testing requirements of screens of different sizes and types. The entire switching process is simple and intuitive, which reduces the operating difficulty of the tester and makes the testing process smoother.

[0032] According to the screen test bench provided by the present invention, the position adjustment mechanism includes a three-dimensional motion mechanism, and the image probe includes a camera; wherein,

[0033] The three-dimensional motion mechanism includes at least two motion components, and each camera is installed on a corresponding motion component; and,

[0034] The X-axis of the three-dimensional motion mechanism is parallel to the length direction of the test box, the Y-axis of the three-dimensional motion mechanism is parallel to the width direction of the test box, and the Z-axis of the three-dimensional motion mechanism is parallel to the height direction of the test box.

[0035] With the above technical solution, the three-dimensional motion mechanism includes at least two moving parts, each camera is installed on the corresponding moving part, and can move independently or in combination in the three dimensions of X, Y, and Z. This design not only enables multiple cameras to be installed at the same time, but also allows the camera to flexibly adjust its position, realize all-round shooting and testing of the screen, and can comprehensively evaluate the key indicators of the screen display effect, brightness, contrast, color accuracy, etc. at different viewing angles, thereby ensuring the use effect of the screen in new energy vehicles.

[0036] According to the screen test bench provided by the present invention, a shading curtain that can be opened and closed is arranged at one opening of the test box, and a back plate opposite to the opening in the test box is formed with a plurality of openings evenly arranged along the plane where the back plate is located.

[0037] Using the above technical solution, the design of the blackout curtain allows testers to adjust the lighting conditions in the test box according to test requirements. In the actual use environment of new energy vehicles, the screen may be affected by different lighting conditions. By opening and closing the blackout curtain, testers can simulate various environments from complete darkness to bright light to evaluate the display effect and visibility of the screen under different lighting conditions, which helps to eliminate problems such as screen brightness changes and color distortion caused by light changes, making the test closer to actual usage.

[0038] In addition, the opening design on the back panel is not only suitable for various fixing needs, such as using cable ties to fix multiple ECUs and other domain controls on the back of the back panel, but also has openings for wiring harnesses on the back panel, which can neatly arrange the harnesses of each control with a high degree of freedom. It also helps to improve the ventilation in the test box and reduce the heat accumulation caused by the operation of the equipment, which can ensure that the temperature in the test box remains within a reasonable range and avoid overheating that affects the accuracy of the test results. The design of the blackout curtain and opening helps to reduce the interference of external factors on the test results, such as light changes, temperature fluctuations, etc. This helps to improve the accuracy and reliability of the test results and provide more real and reliable test data support for new energy vehicle manufacturers.

[0039] According to the test bench for the screen provided by the present invention, an operating platform with a planar structure is formed on the bench body, a test device is arranged on the operating platform, and an operating panel is formed at the bottom end of the test box near the bench body, the operating panel includes a signal control panel and a wiring harness plug-in panel spaced apart in the length direction of the test box.

[0040] With the above technical solution, the flat structure operating platform on the test bench body provides a stable and spacious space for the layout of the test device, allowing testers to install, debug and operate the test equipment more conveniently. It reduces the mutual interference between devices and improves the efficiency of test preparation and execution. The operating panel at the bottom of the test box includes a signal control panel and a harness plug-in panel, which are arranged at intervals in the length direction of the test box, so that testers can clearly identify and operate each panel, avoiding confusion and misoperation in operation, thereby improving test efficiency.

[0041] The signal control buttons, indicator lights and harness plug-in interfaces on the operation panel help testers to accurately identify and operate, avoiding safety accidents caused by misoperation. By setting the test device on the operation platform and dividing the operation panel into modules such as the signal control panel and the harness plug-in panel, the modularization and standardization of the test process are achieved, which helps testers to perform test operations according to the established process and reduces the uncertainty and arbitrariness in the test process.

[0042] According to the screen test bench provided by the present invention, a bottom platform is provided on the bench body and below the test device, and a host chassis connected to the image recognition unit signal is provided on one side of the bottom platform; and

[0043] A cooling device is arranged on one side of the mainframe chassis on the bottom platform, and the bottom platform comprises a bottom plate arranged at one side of the mainframe chassis and inclined relative to a horizontal plane.

[0044] By adopting the above technical solution, the host chassis set on one side of the bottom platform is connected to the image recognition unit signal. The large amount of data generated during the image recognition process can be transmitted to the host for processing, which improves the efficiency of data processing, makes image recognition faster and more accurate, and helps to provide real-time feedback on test results and improve test efficiency.

[0045] Furthermore, the cooling device installed on the bottom platform can effectively reduce the temperature of the host chassis and other key components, prevent performance degradation or equipment damage due to overheating, and ensure the continuity and stability of long-term testing. The inclined bottom plate design not only optimizes the spatial layout of the bottom platform, making the entire test bench more compact and efficient, but also can drain water when the cooling device leaks, preventing water accumulation.

[0046] The beneficial effects of the present invention are:

[0047] The present invention provides a test bench for a screen, which includes a test bench body and a test device arranged on the test bench body, and a plurality of screen mounting mechanisms and an image recognition unit corresponding to each screen mounting mechanism are arranged in a test box. When in use, the screen mounting mechanism can switch between a first station (vertical posture) and a second station (horizontal posture) to realize multiple scene tests, allowing testers to simulate the screen state of a new energy vehicle in different usage scenarios. For example, a vertical posture test can be performed with a manual function test, while a horizontal posture test can be performed with an automated test. The image recognition unit can ensure that the screen is fully covered and accurately captured when it is in any station through a position adjustment mechanism and an image probe. This helps to discover potential problems of the screen at different angles and postures, such as touch delay, color distortion, etc. Through the test bench, multiple scenes can be tested without the need for multiple devices to frequently switch with each other, which can not only improve the test efficiency of engineers, but also reduce research and development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of the three-dimensional structure of a test bench for a screen provided in an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of the structure of the slide rails and sliders in a three-dimensional test bench for a screen provided by an embodiment of the present invention;

[0050] Figure 3 A schematic structural diagram of a first bracket in a three-dimensional test bench for a screen provided by an embodiment of the present invention;

[0051] Figure 4 A schematic structural diagram of a second bracket in a three-dimensional test bench for a screen provided in an embodiment of the present invention;

[0052] Figure 5 A schematic structural diagram of a first station in a first implementation manner in a three-dimensional test bench for a screen provided in an embodiment of the present invention;

[0053] Figure 6 A schematic structural diagram of the second station in the first implementation manner of the three-dimensional test bench for the screen provided by an embodiment of the present invention;

[0054] Figure 7 A schematic structural diagram of the first station in the second implementation manner of the three-dimensional test bench for the screen provided by an embodiment of the present invention;

[0055] Figure 8 A schematic structural diagram of a second station in a second implementation manner of a three-dimensional test bench for a screen provided in an embodiment of the present invention;

[0056] Fig. 9A schematic diagram of the installation structure of the image recognition unit in the three-dimensional test bench of the screen provided by the embodiment of the present invention;

[0057] Fig.10 A schematic structural diagram of a host chassis in a three-dimensional test bench for a screen provided in an embodiment of the present invention.

[0058] Description of reference numerals:

[0059] 10. Main body of the test stand;

[0060] 110, operating platform; 120, operating panel; 121, signal control panel; 122, wiring harness plug-in panel; 130, host chassis; 131, wiring hole; 132, lock; 140, cooling device; 150, bottom plate; 160, keyboard;

[0061] 20. Test device;

[0062] 210, test box; 220, screen mounting mechanism; 221, first bracket; 222, second bracket; 223, first bending portion; 224, second bending portion; 225, strip hole; 226, screen mounting seat; 2261, arc groove; 227, screen mounting seat; 230, image recognition unit; 231, position adjustment mechanism; 240, slide rail; 250, slider; 260, blackout curtain; 270, back panel; 271, opening. DETAILED DESCRIPTION

[0063] A screen, also known as a display screen or a screen, is a device for projecting or displaying text and images. Screen performance plays a vital role in human-computer interaction, and it directly affects the communication experience between users and digital devices.

[0064] For new energy vehicles, smart cockpits have gradually become the main trend of new energy vehicles, and screens have gradually become indispensable appliances in smart cockpits. High-resolution, color-accurate screens can provide clearer, more realistic images and videos, allowing drivers to more accurately obtain key information such as vehicle status, navigation information, and entertainment content. In strong or weak light environments, the screen's brightness and contrast adjustment capabilities directly affect the readability of information. High-performance screens can maintain clear display effects under various lighting conditions, ensuring that drivers can always clearly see the content on the screen. In addition, high-performance screens can be combined with the vehicle's intelligent system to achieve intelligent interactive functions such as face recognition and voice recognition. Through intelligent recognition technology, the screen can automatically adjust the display content and interface layout to meet the personalized needs of different drivers.

[0065] In this regard, in the research and development stage of each new energy vehicle, adjusting the integration degree of the screen and the whole vehicle has become an important part of the research and development. Therefore, before the screen is installed on the vehicle, engineers need to use a variety of equipment to test the performance of the screen in different states so that it can be better integrated with the whole vehicle. However, in the existing technology, when testing the screen, due to the need to simulate multiple scenarios, multiple devices need to be replaced with each other during the process, resulting in a more complicated testing process and a heavy workload for engineers, which not only reduces work efficiency, but also increases research and development costs.

[0066] Based on this, the present invention provides a test bench for a screen, which includes a test bench body and a test device arranged on the test bench body, and a plurality of screen mounting mechanisms and an image recognition unit corresponding to each screen mounting mechanism are arranged in the test box. When in use, the screen mounting mechanism can switch the first station (vertical posture) and the second station (horizontal posture) to realize multiple scene tests, allowing testers to simulate the screen state of new energy vehicles in different usage scenarios. For example, the vertical posture test can be tested manually, while the horizontal posture test can be tested automatically. The image recognition unit can ensure that the screen is fully covered and accurately captured when it is in any station through a position adjustment mechanism and an image probe. This helps to find potential problems of the screen at different angles and postures, such as touch delay, color distortion, etc. Through the test bench, multiple scenes can be tested without the need for multiple devices to switch frequently with each other, which can not only improve the test efficiency of engineers, but also reduce R&D costs.

[0067] In order to more clearly introduce the test bench of the screen provided by the present invention, the following is a detailed description with reference to the accompanying drawings:

[0068] First, the structure and working principle of the test bench of the screen of the present invention are generally introduced.

[0069] like Figure 1 As shown, the test bench for the screen provided by the present invention includes a bench body 10 and a test device 20 arranged on the bench body 10, the test device 20 includes a test box 210 with an opening on one side, and a plurality of screen mounting mechanisms 220 and image recognition units 230 corresponding to each screen mounting mechanism 220 are arranged in the test box 210.

[0070] Two, three, four or more screen mounting mechanisms 220 may be arranged in the test box 210, and each screen mounting mechanism 220 may be provided with one corresponding image recognition unit 230. Of course, multiple image recognition units 230 may also be provided. For example, each screen mounting mechanism 220 may be provided with two image recognition units 230. The image recognition units 230 are used to recognize different screens of the screen, and the recognized screen information is sent to the background processing terminal for testing. The background processing terminal may be a computer, etc., and specifically, it may be transmitted to the background processing terminal through a signal transmission method such as a network. After that, the engineer may analyze the transmitted screen information to obtain the test result.

[0071] In the present invention, each screen installation mechanism 220 has a first station and a second station that can be switched with each other. Figure 5 and Figure 7 The state shown) is used to install the screen in a vertical position, and the second station ( Figure 6 and Figure 8 Each image recognition unit 230 includes a position adjustment mechanism 231 (see FIG. 210 ) mounted on the inner wall of the test box 210. Fig. 9 ), an image probe installed on the position adjustment mechanism 231; when any screen is installed on the screen mounting mechanism 220 at the second station, the image probe of the corresponding image recognition unit 230 is facing the corresponding screen so that the irradiation range of the image probe covers the screen.

[0072] It should be understood that the structure of the screen mounting mechanism 220 is not limited as long as it can realize the switching of two workstations. For example, it can be two screen brackets. When the screen needs to be switched to a vertical state, the connection position of the screen mounted on the bracket is adjusted to a vertical state. When the screen needs to be switched to a horizontal state, the connection position of the screen mounted on the bracket is adjusted to a horizontal state, thereby realizing the switching of the two position states of the screen.

[0073] Based on the test bench provided by the present invention, when in use, the screen mounting mechanism 220 can switch between the first station (vertical posture) and the second station (horizontal posture), which can allow testers to simulate the screen state of new energy vehicles in different usage scenarios. For example, the vertical posture test can perform manual function tests, while the horizontal posture test can perform automated tests. The image recognition unit 230 can ensure full coverage and accurate capture of the screen when it is in any station through the position adjustment mechanism 231 and the image probe. This helps to discover potential problems of the screen at different angles and postures, such as touch delays, color distortion, etc.

[0074] In addition, multiple screen mounting mechanisms 220 and image recognition units 230 are arranged in the test box 210, allowing multiple screens to be tested at the same time, shortening the test cycle, improving test efficiency, and helping new energy vehicle manufacturers to speed up product development and market launch. When any screen is installed on the screen mounting mechanism 220 at the second workstation, the image recognition unit 230 can ensure full coverage of the screen, which helps testers evaluate the display effect, color accuracy and other human-computer interaction performance indicators of the screen at different angles and postures. The test box 210 can provide a relatively closed and stable test environment for the screen, reducing the impact of external factors (such as light, temperature, etc.) on the test results, helping to improve the accuracy and reliability of the test, and thereby reducing the cost of the test equipment while improving the test efficiency and test accuracy.

[0075] Regarding the screen mounting mechanism 220, in one embodiment of the present invention, as Figure 2-Figure 6 As shown, a slide rail 240 extending along the length direction of the test box 210 is provided at the bottom of the test box 210, and each screen mounting mechanism 220 is slidably connected to the slide rail 240 (see Figure 2 The screen mounting mechanism 220 includes a first bracket 221 (see Figure 3 The structure shown) and the second bracket 222 (see Figure 4 When at least one end of the first bracket 221 and the second bracket 222 is slidably connected to the slide rail 240, the other end has a connecting portion extending in the vertical direction to form a first station (see Figure 5 One end of the first bracket 221 is slidably connected to the slide rail 240, one end of the second bracket 222 is detachably connected to the other end of the first bracket 221, and the other end of the second bracket 222 has a connecting portion extending in the horizontal direction to form a second station (see Figure 6 structure shown).

[0076] Specifically, in actual use, when one end of the first bracket 221 is slidably connected to the slide rail 240, the other end of the first bracket 221 extends in the vertical direction to form the first station, or when one end of the second bracket 222 is slidably connected to the slide rail 240, the other end of the second bracket 222 extends in the vertical direction to form the first station. It is also possible to use both the first bracket 221 and the second bracket 222, that is, one of the screen mounting mechanisms 220 uses the first bracket 221 and the other uses the second bracket 222.

[0077] Based on this structure, since the screen mounting mechanism 220 is slidably connected to the slide rail 240, and the screen mounting mechanism 220 includes a first bracket 221 and a second bracket 222, the screen mounting mechanism 220 can switch between the first position (vertical posture) and the second position (horizontal posture), and can simulate more usage scenarios, such as simulating the driver to view the instrument panel during normal driving, and operating the central control screen when the vehicle is stationary, etc. And due to the adjustability of the bracket, the test bench can adapt to screens of various sizes and types to meet the screen testing requirements of different parts and functions in new energy vehicles. The design of the slide rail 240 enables the screen mounting mechanism 220 to slide along the length direction of the test box 210, so as to be positioned at the test position, which can simulate the actual usage scenarios of the screen in the new energy vehicle (such as the driver's perspective, the passenger's perspective, etc.), and can more realistically reflect the performance of the screen in human-computer interaction, thereby providing more valuable test data for new energy vehicle manufacturers.

[0078] Further, the first bracket 221 and the second bracket 222 are configured as "L"-shaped brackets, and the first bracket 221 and the second bracket 222 respectively include a first bending portion 223 and a second bending portion 224, and the first bending portion 223 and the second bending portion 224 are both formed with a strip hole 225; when the first bending portion 223 of the first bracket 221 and / or the second bracket 222 is slidably connected to the slide rail 240 in the horizontal direction, the second bending portion 224 of the first bracket 221 and / or the second bracket 222 extends in the vertical direction, and the strip hole 225 extending in the vertical direction on the second bending portion 224 constitutes a first work station (see Figure 5 The structure shown in the figure needs to be understood that only the structure of the first bracket 221 is shown in the figure, and the second bracket 222 is similar); when the first bent portion 223 of the first bracket 221 is slidably connected to the slide rail 240 in the horizontal direction, the first bent portion 223 of the second bracket 222 is slidably connected to the second bent portion 224 of the first bracket 221 in the vertical direction, and the second bent portion 224 of the second bracket 222 extends in the horizontal direction, and the bar-shaped hole 225 extending in the horizontal direction on the second bent portion 224 constitutes a second station (see Figure 6 structure shown).

[0079] It is important to understand that, see Figure 3 and Figure 4 , the first bending portion 223 of the second bracket 222 may be shorter than the first bending portion 223 of the first bracket 221 .

[0080] Based on this structure, through the "L"-shaped design of the first bracket 221 and the second bracket 222 and the setting of the strip hole 225, the first bracket 221 and the second bracket 222 can be assembled in different assembly methods to provide different installation positions, that is, when one end of at least one of the first bracket 221 and the second bracket 222 is slidably connected to the slide rail 240, the other end has a connection portion extending in the vertical direction to form a first position, one end of the first bracket 221 is slidably connected to the slide rail 240, one end of the second bracket 222 is detachably connected to the other end of the first bracket 221, and the other end of the second bracket 222 has a connection portion extending in the horizontal direction to form a second position. This structure is not only simple, but also the connection position can be adjusted by using the strip hole 225, and it is more adaptable.

[0081] The test bench of the screen provided by the present invention is shown in Figure 2 , Figure 5 , Figure 6 The screen mounting mechanism 220 further includes a slider 250 , which is slidably connected to the slide rail 240 , and the first bending portion 223 of the first bracket 221 and / or the second bracket 222 is detachably connected to the slider 250 .

[0082] Based on this structure, the first bracket 221 and the first bent portion 223 of the second bracket 222 are connected to the slider 250 in a detachable connection manner, and the sliding connection of the slider 250 on the slide rail 240 allows the screen mounting mechanism 220 to move quickly and smoothly in the test box 210, so as to quickly adjust to the required test position. When the bracket needs to be replaced or adjusted, there is no need for a complicated disassembly process, and it only needs to be simply disassembled and reinstalled, which helps to quickly adapt to the testing needs of screens of different sizes and types.

[0083] When in use, the first bending portion 223 of the first bracket 221 may be detachably connected to the slider 250, or the first bending portion 223 of the second bracket 222 may be detachably connected to the slider 250, or the first bending portion 223 of the first bracket 221 and the second bracket 222 may be detachably connected to the slider 250. In this case, the screen can be placed horizontally. Figure 6 On the second-layer L-shaped bracket, the height of the second-layer L-shaped bracket can also be adjusted arbitrarily.

[0084] In another embodiment of the present invention, Figure 7 and Figure 8As shown, the screen mounting mechanism 220 includes a screen mounting seat 226 and a rotating connection component; the connection end of the rotating connection component is movably arranged at the bottom of the test box 210 along the length direction of the test box 210, and the screen mounting seat 226 is flippably connected to the rotating end of the rotating connection component around the length direction of the test box 210; when the screen mounting seat 226 is rotated to a vertical state, it forms a first working position (see Figure 7 The screen mounting base 226 is rotated to a horizontal state to form a second station (see Figure 8 structure shown).

[0085] Based on this structure, the screen mounting seat 226 can be flipped around the length direction of the test box 210 to achieve switching from a vertical state (first station) to a horizontal state (second station). During the process, the test bench can simulate the posture of the screen in different usage scenarios in new energy vehicles without disassembling the components. The connecting end of the rotating connecting component can be moved along the length direction of the test box 210, so that the screen mounting seat 226 can not only switch between vertical and horizontal states, but also adjust its position along the length direction of the test box 210 to meet different test requirements. When in use, by adjusting the position of the rotating connecting component and the screen mounting seat 226, the tester can quickly position the screen to the required test position, reducing the test preparation time and improving the test efficiency.

[0086] Furthermore, the rotating connecting component includes a rotating bracket connected to the moving seat, the rotating bracket includes a sliding shaft 227 extending along the length direction of the test box 210, an arc groove 2261 is formed on the screen mounting seat 226, and the sliding shaft 227 is slidably connected to the arc groove 2261; the screen mounting seat 226 slides relative to the sliding shaft 227 through the arc groove 2261 to switch between the first station and the second station; the curvature of the arc groove 2261 is greater than or equal to 90°.

[0087] Based on this structure, the screen mount 226 can switch between the first station (vertical state) and the second station (horizontal state) through the sliding connection between the arc groove 2261 and the sliding shaft 227. Not only is the structure simple, but also the flexibility is high. The arc of the arc groove 2261 is greater than or equal to 90°, such as 90°, 120°, etc., so that the screen mount 226 can adjust the posture in a wider range, which helps to more comprehensively evaluate the performance of the screen at different angles. The rotating bracket and the sliding shaft 227 provide stable support for the screen mount 226, ensuring the stability of the screen during the switching process between different stations. The sliding connection of the sliding shaft 227 in the arc groove 2261 allows the screen mount 226 to be fine-tuned to meet the testing requirements of screens of different sizes and types. The entire switching process is simple and intuitive, which reduces the operating difficulty of the tester and makes the testing process smoother.

[0088] Further, see Fig. 9 The position adjustment mechanism 231 includes a three-dimensional motion mechanism, and the image probe includes a camera; the three-dimensional motion mechanism includes at least two moving parts, and each camera is installed on a corresponding moving part; the X-axis of the three-dimensional motion mechanism is parallel to the length direction of the test box 210, the Y-axis of the three-dimensional motion mechanism is parallel to the width direction of the test box 210, and the Z-axis of the three-dimensional motion mechanism is parallel to the height direction of the test box 210.

[0089] Based on this structure, the three-dimensional motion mechanism includes at least two moving parts, each camera is installed on the corresponding moving part, and can move independently or in combination in the three dimensions of X, Y, and Z. This design not only enables multiple cameras to be installed at the same time, but also allows the camera to flexibly adjust its position, realize all-round shooting and testing of the screen, and can comprehensively evaluate the key indicators of the screen's display effect, brightness, contrast, color accuracy, etc. at different viewing angles, thereby ensuring the use effect of the screen in new energy vehicles.

[0090] It should be understood that the number of moving parts and cameras only needs to correspond, and the specific structure of the three-dimensional motion mechanism is not limited. For example, it may include a first sliding axis parallel to the length direction of the test box 210, a second sliding axis parallel to the width direction of the test box 210, and a third sliding axis parallel to the height direction of the test box 210. The second sliding axis is slidably connected to the first sliding axis, the third sliding axis is slidably connected to the second sliding axis, and the camera is slidably connected to the third sliding axis, thereby realizing the position adjustment of the camera in different directions, thereby focusing the picture, realizing all-round automated detection of the test screen and equipment, reducing manual intervention, and improving test accuracy.

[0091] Furthermore, the first sliding shaft, the second sliding shaft, and the third sliding shaft can be detached from each other in pairs.

[0092] Further, see Figure 1 A shading curtain 260 that can be opened and closed is provided at one opening of the test box 210 , and a plurality of openings 271 that are evenly arranged along the plane where the back plate 270 is located are formed on a back plate 270 in the test box 210 opposite to the opening.

[0093] When shading is not needed, the blackout curtain 260 can be rolled up at the top of the opening on one side of the test box 210. When shading is needed, the blackout curtain 260 can be operated to open and fall, allowing for quick adjustment of lighting conditions, providing a light-transmitting or completely dark environment, adapting to different testing requirements, and ensuring the controllability of the test environment.

[0094] It should be further understood that the shading curtain 260 that can be opened and closed is not limited to being provided at the opening of one side of the test box 210. A shading curtain can also be provided on the side of the back plate 270 away from the opening. When light shielding is required, the shading curtains on both sides can be operated to open at the same time. The shading curtain 260 at the opening can prevent light from entering the test box 210 from the opening, and the shading curtain on the side of the back plate 270 away from the opening can prevent light on the side of the back plate 270 from passing through the opening 271 and entering the test box 210.

[0095] Furthermore, the back panel 270 can be designed to be hollow and covered with 1 cm square openings 271, one every 2 cm, which is suitable for various fixing needs. The domain controls of the electronic components involved in the test can be fixed on the back of the back panel 270 using cable ties. The back panel 270 is also provided with openings 271 for wiring harnesses, which can neatly arrange the wiring harnesses of each control with a high degree of freedom.

[0096] Based on this structure, the design of the blackout curtain 260 allows the tester to adjust the light conditions in the test box 210 according to the test requirements. In the actual use environment of new energy vehicles, the screen may be affected by different lighting conditions. By opening and closing the blackout curtain 260, the tester can simulate various environments from complete darkness to bright light to evaluate the display effect and visibility of the screen under different lighting conditions, which helps to eliminate problems such as screen brightness changes and color distortion caused by light changes, making the test closer to actual usage.

[0097] Furthermore, the opening 271 on the back plate 270 is not only suitable for various fixing requirements, such as using cable ties to fix multiple ECUs and other domain controls on the back of the iron plate, but also provided with openings 271 for wiring harnesses on the iron plate, which can neatly arrange the harnesses of each control with a high degree of freedom. It also helps to improve the ventilation in the test box 210 and reduce the heat accumulation caused by the operation of the equipment, which can ensure that the temperature in the test box 210 remains within a reasonable range and avoid overheating that affects the accuracy of the test results. The design of the blackout curtain 260 and the opening 271 helps to reduce the interference of external factors on the test results, such as light changes, temperature fluctuations, etc. This helps to improve the accuracy and reliability of the test results and provide more real and reliable test data support for new energy vehicle manufacturers.

[0098] Furthermore, a planar operating platform 110 is formed on the test bench body 10, the testing device 20 is arranged on the operating platform 110, and an operating panel 120 is formed at the bottom end of the test box 210 near the test bench body 10, and the operating panel 120 includes a signal control panel 121 and a wiring harness plug-in panel 122 which are spaced apart in the length direction of the test box 210.

[0099] A wiring harness plug-in panel 122 and a signal control panel 121 are set on the work surface. The wiring harness plug-in panel 122 contains positive and negative power poles, audio and data transmission interfaces, various CAN and LIN signal interfaces, etc., which are convenient for plugging and unplugging the wiring harness during testing. The wiring harness of the signal control panel 121 is routed to the hub on the back of the iron plate, and the other end of the hub is connected to the vehicle wiring harness, realizing centralized management and orderly routing of the wiring harness, and also improving the convenience of manual testing.

[0100] When conducting the test, the screen can be placed in the test box 210 between the wiring harness plug-in panel 122 and fixed on the screen mounting mechanism 220. The vehicle computer can be placed on the operating platform 110. The wiring harness between the screen and the vehicle computer can pass through the wire hole on the wiring harness plug-in panel 122; the connecting wiring harness between the screen and the domain controls of the electronic components involved in the test fixed on the back of the back panel 270 can pass through the opening 271 on the back panel 270.

[0101] Furthermore, the operating platform 110 is also provided with wiring holes, and the wiring harnesses between the screen, vehicle computer and other domain controls and the host chassis can pass through the wiring holes on the operating platform 110.

[0102] Furthermore, the plane structure operation platform 110 on the test bench body 10 provides a stable and spacious space for the arrangement of the test device 20, so that the tester can install, debug and operate the test equipment more conveniently. The mutual interference between the equipment is reduced, and the efficiency of test preparation and execution is improved. The operation panel 120 at the bottom of the test box 210 includes a signal control panel 121 and a harness plug panel 122, which are arranged at intervals in the length direction of the test box 210, so that the tester can clearly identify and operate each panel, avoiding confusion and misoperation in operation, thereby improving the test efficiency. The signal control button, indicator light and harness plug interface on the operation panel 120 help the tester to accurately identify and operate, and avoid safety accidents caused by misoperation. By arranging the test device 20 on the operation platform 110, and dividing the operation panel 120 into modules such as the signal control panel 121 and the harness plug panel 122, the modularization and standardization of the test process are realized, which helps the tester to perform the test operation according to the established process and reduces the uncertainty and arbitrariness in the test process.

[0103] Furthermore, a bottom platform is provided on the test stand body 10 and below the testing device 20, and a host chassis 130 connected to the image recognition unit 230 signal is provided on one side of the bottom platform; a cooling device 140 is provided on the bottom platform and located on one side of the host chassis 130, and the bottom platform includes a bottom plate 150 located on one side of the host chassis 130 and inclined relative to the horizontal plane, and other items can also be placed on the bottom plate 150.

[0104] Furthermore, if Fig.10 As shown, the cooling device 140 can be a fan arranged on one side of the host chassis 130, and a keyboard 160 can be arranged under the test bench body 10 for controlling the host, and the host chassis 130 is also provided with a wire socket 131 for connecting to the screen, and a lock 132 can also be provided at the end of the host chassis 130 to lock the host chassis 130 when the test bench is not in use to prevent data leakage.

[0105] Based on this structure, the host chassis 130 set on one side of the bottom platform is connected to the image recognition unit 230 by signal. A large amount of data generated during the image recognition process can be transmitted to the host for processing, which improves the efficiency of data processing, makes image recognition faster and more accurate, and helps to provide real-time feedback on test results and improve test efficiency.

[0106] Furthermore, the cooling device 140 provided on the bottom platform can effectively reduce the temperature of the host chassis 130 and other key components, prevent performance degradation or equipment damage due to overheating, and ensure the continuity and stability of long-term testing. The inclined bottom plate 150 design not only optimizes the spatial layout of the bottom platform, making the entire test bench more compact and efficient, but also can drain water when the cooling device 140 leaks, preventing water accumulation.

[0107] Furthermore, in the present invention, four lockable pulleys are installed at the bottom of the test stand body 10 to facilitate moving and fixing the test stand, adapt to the needs of different test scenarios, and enhance the flexibility of equipment deployment. The top of the test stand body 10 can be placed with prompt panels such as a test stand identifier and an equipment inspection form.

[0108] It should be understood that the test bench of the screen provided by the present invention is not limited to the test of the screen of the new energy vehicle, but can also be used for the test of other screens. When in use, the user can install the screen on the screen mounting mechanism 220. Since the screen mounting mechanism 220 can switch the first station (vertical posture) and the second station (horizontal posture) to realize multiple scene tests, the tester is allowed to simulate the screen state of the new energy vehicle in different usage scenarios. For example, the vertical posture test can be tested manually, while the horizontal posture test can be tested automatically. The image recognition unit 230 can ensure that the screen is fully covered and accurately captured when it is in any station through the position adjustment mechanism 231 and the image probe. A variety of scene tests can be performed without the need for multiple devices to frequently switch with each other, which can not only improve the test efficiency of engineers, but also reduce research and development costs.

[0109] The above is an explanation of the implementation mode of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation mode. On the contrary, the purpose of introducing the invention in conjunction with the implementation mode is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the above description. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the key points of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0110] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0111] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do 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 invention.

[0112] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0113] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" 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 this embodiment can be understood according to specific circumstances.

Claims

1. A screen test bench, characterized in that: The test device comprises a test stand body and a test device arranged on the test stand body, wherein the test device comprises a test box with an opening on one side, wherein a plurality of screen installation mechanisms and image recognition units corresponding to each of the screen installation mechanisms are arranged in the test box; wherein, Each of the screen installation mechanisms has a first station and a second station that can be switched with each other, the first station is used to install the screen in a vertical posture, and the second station is used to install the screen in a horizontal posture; each of the image recognition units includes a position adjustment mechanism installed on the inner wall of the test box, and an image probe installed on the position adjustment mechanism; wherein, When any of the screens is mounted on the screen mounting mechanism at the second workstation, the image probe of the corresponding image recognition unit faces the corresponding screen so that the irradiation range of the image probe covers the screen.

2. The screen test bench according to claim 1, characterized in that: The bottom of the test box is provided with a slide rail extending along the length direction of the test box, each of the screen mounting mechanisms is slidably connected to the slide rail, and the screen mounting mechanism includes a first bracket and a second bracket; wherein, When one end of at least one of the first bracket and the second bracket is slidably connected to the slide rail, the other end has a connecting portion extending in the vertical direction to form the first station; or One end of the first bracket is slidably connected to the slide rail, one end of the second bracket is detachably connected to the other end of the first bracket, and the other end of the second bracket has a connecting portion extending in a horizontal direction to form the second workstation.

3. The screen test bench according to claim 2, characterized in that: The first bracket and the second bracket are configured as "L"-shaped brackets, and the first bracket and the second bracket respectively include a first bending portion and a second bending portion, and the first bending portion and the second bending portion are both formed with a strip hole; wherein, When the first bent portion of the first bracket and / or the second bracket is slidably connected to the slide rail in the horizontal direction, the second bent portion of the first bracket and / or the second bracket extends in the vertical direction, and the strip-shaped hole extending in the vertical direction on the second bent portion constitutes the first workstation; When the first bent portion of the first bracket is slidably connected to the slide rail in a horizontal direction, the first bent portion of the second bracket is slidably connected to the second bent portion of the first bracket in a vertical direction, and the second bent portion of the second bracket extends in a horizontal direction, and the strip-shaped hole extending in the horizontal direction on the second bent portion constitutes the second workstation.

4. The screen test bench according to claim 3, characterized in that: The screen mounting mechanism further comprises a slider, which is slidably connected to the slide rail, and the first bending portion of the first bracket and / or the second bracket is detachably connected to the slider.

5. The screen test bench according to claim 1, characterized in that: The screen mounting mechanism comprises a screen mounting seat and a rotating connecting component; wherein, The connection end of the rotating connection component is movably arranged at the bottom of the test box along the length direction of the test box, and the screen mounting seat is flippably connected to the rotating end of the rotating connection component around the length direction of the test box; wherein, The screen mounting seat is rotated to a vertical state to form the first workstation, and the screen mounting seat is rotated to a horizontal state to form the second workstation.

6. The screen test bench according to claim 5, characterized in that: The rotating connection component includes a rotating bracket connected to the moving seat, the rotating bracket includes a sliding shaft extending along the length direction of the test box, an arc groove is formed on the screen mounting seat, and the sliding shaft is slidably connected to the arc groove; wherein, The screen mounting seat slides relative to the sliding shaft through the arc groove to switch between the first station and the second station; and, The arc angle of the arc groove is greater than or equal to 90°.

7. The screen test bench according to any one of claims 1 to 6, characterized in that: The position adjustment mechanism includes a three-dimensional motion mechanism, and the image probe includes a camera; wherein, The three-dimensional motion mechanism comprises at least two motion components, and each camera is mounted on a corresponding motion component; and The X-axis of the three-dimensional motion mechanism is parallel to the length direction of the test box, the Y-axis of the three-dimensional motion mechanism is parallel to the width direction of the test box, and the Z-axis of the three-dimensional motion mechanism is parallel to the height direction of the test box.

8. The screen test bench according to any one of claims 1 to 6, characterized in that: An openable and closable blackout curtain is provided at an opening on one side of the test box, and a plurality of openings evenly arranged along the plane where the back plate is located are formed on a back plate in the test box opposite to the opening.

9. The screen test bench according to any one of claims 1 to 6, characterized in that: An operating platform with a planar structure is formed on the test bench body, the test device is arranged on the operating platform, and an operating panel is formed at the bottom end of the test box near the test bench body, and the operating panel includes a signal control panel and a wiring harness plug-in panel arranged at intervals in the length direction of the test box.

10. The screen test bench according to any one of claims 1 to 6, characterized in that: A bottom platform is arranged on the main body of the test stand and below the test device, and a host chassis connected to the image recognition unit signal is arranged on one side of the bottom platform; and, A cooling device is arranged on the bottom platform at one side of the mainframe chassis, and the bottom platform comprises a bottom plate arranged at one side of the mainframe chassis and inclined relative to a horizontal plane.

Images