Test device

Abstract

This application discloses a testing device, belonging to the field of vehicle technology. The testing device includes a bracket assembly, an image-forming element, a sunlight sensor, and a drive assembly. The bracket assembly supports the head-up display (HUD) to be tested. The image-forming element is connected to the bracket assembly and allows sunlight to pass through and enter the HUD. The sunlight sensor is mounted on the bracket assembly and is electrically connected to the drive assembly. The drive assembly drives the bracket assembly to rotate until the sunlight spot falls on the target position when the light spot formed within the sunlight sensor does not fall on the target position. Using the technical solution provided in this application, the testing efficiency of sunlight backflow testing can be improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically to a testing device. Background Technology

[0002] To ensure safer and more stable driving, an increasing number of vehicles are equipped with head-up displays (HUDs). HUDs can overlay various information, such as navigation, driving, and environmental information, within the driver's field of vision, preventing the driver from looking down at information and deviating from the road, thus avoiding dangerous driving consequences. In natural light, light rays parallel to the principal optical axis converge through a curved mirror within the HUD, forming a light spot that falls onto the image generation unit—a phenomenon known as sunlight backflow. The temperature of the image generation unit can rise rapidly due to the light spot, potentially even causing it to burn out. Therefore, sunlight backflow testing is necessary during the development phase of HUDs to better understand their performance and provide a better basis for designing heat dissipation structures. In actual driving, a condition may occur where the light spot consistently falls on the center of the image generation unit. Under this condition, the image generation unit heats up the fastest. Therefore, testing the performance of the image generation unit under this condition can quickly reveal the performance characteristics of the HUD.

[0003] In related technologies, the sunlight backflow test bench requires manual adjustment of the bench angle to ensure that the light spot falls in the center of the image generation unit. However, the need for constant manual adjustment leads to low testing efficiency. Summary of the Invention

[0004] In view of this, this application provides a testing device that can improve the testing efficiency of solar backflow testing.

[0005] On one hand, embodiments of this application provide a testing device, which includes a support assembly, an imaging element, a sunlight sensor, and a driving assembly;

[0006] The bracket assembly is used to support the head-up display to be tested;

[0007] The imaging element is connected to the support assembly, and the imaging element allows sunlight to pass through and enter the head-up display under test;

[0008] The sunlight sensor is mounted on the bracket assembly, and the sunlight sensor is electrically connected to the drive assembly;

[0009] The drive component is used to drive the bracket assembly to rotate until the light spot falls on the target position when the light spot formed in the sunlight sensor does not fall on the target position.

[0010] Optionally, the testing apparatus further includes a controller;

[0011] The sunlight sensor includes a housing, a target curved mirror, and a photoresistor. The target curved mirror and the photoresistor are both located inside the housing. The photoresistor is electrically connected to the controller, and the controller is electrically connected to the drive assembly.

[0012] The sunlight is focused into a spot by the target curved mirror and falls onto the photoresistor, which has the target position.

[0013] The controller is used to control the drive component to drive the support component to rotate when the light spot does not fall on the target position.

[0014] Optionally, the housing includes a first inner wall and a second inner wall disposed opposite to each other;

[0015] The target curved mirror is installed on the first inner wall;

[0016] The photoresistor is mounted on the second inner wall.

[0017] Optionally, the head-up display under test includes a test curved mirror and a plane mirror;

[0018] The direction in which sunlight travels from the test curved mirror to the plane mirror is the first propagation direction;

[0019] The direction in which sunlight propagates from the target curved mirror to the photoresistor is the second propagation direction;

[0020] Wherein, the first propagation direction and the second propagation direction are the same, and when the light spot falls on the target position, the first propagation direction is parallel to the main optical axis of the head-up display under test.

[0021] Optionally, the sunlight sensor also includes a dustproof film;

[0022] The top of the housing has an opening;

[0023] The dustproof film covers the opening and is transparent to light.

[0024] Optionally, the photoresistor includes a circuit board, a first photoresistor, and a plurality of second photoresistors;

[0025] The target position is the center of the circuit board;

[0026] The first photoresistor is installed at the target location;

[0027] The second photoresistor is mounted on the circuit board, and the plurality of the second photoresistors are centrally symmetrical about the first photoresistor.

[0028] Optionally, the sunlight sensor further includes an audio device electrically connected to the controller, wherein the controller is further configured to control the audio device to emit a first alert sound when the light spot falls on the target location.

[0029] Optionally, the controller is also configured to control the audio device to emit a second prompt tone when the light spot does not fall on the target position.

[0030] Optionally, the drive assembly includes a first drive motor, a second drive motor, a first rotating shaft, a second rotating shaft, and a lead screw mechanism, wherein the first rotating shaft and the second rotating shaft are perpendicular to each other;

[0031] The two ends of the first rotating shaft are respectively connected to the first drive motor and the bracket assembly. When the first drive motor rotates, the first rotating shaft rotates synchronously with the first drive motor, and the first rotating shaft drives the bracket assembly to rotate around the first rotating shaft as the rotation center.

[0032] The two ends of the second rotating shaft are respectively connected to the second drive motor and the bracket assembly. When the second drive motor rotates, the second rotating shaft rotates synchronously with the second drive motor, and the second rotating shaft drives the bracket assembly to rotate around the second rotating shaft as the rotation center.

[0033] Optionally, the controller is further configured to, when the light spot falls on any of the second photoresistors, control the first drive motor and / or the second drive motor to rotate based on the positional relationship between the second photoresistor and the first photoresistor, until the light spot falls on the first photoresistor.

[0034] The testing apparatus provided in this application includes a support assembly, an imaging element, a sunlight sensor, and a driving assembly. The support assembly supports the head-up display (HUD) under test. The imaging element is connected to the support assembly and allows sunlight to pass through and enter the HUD, thus simulating the real-world application scenario of the HUD. The sunlight sensor is mounted on the support assembly and is electrically connected to the driving assembly. The driving assembly drives the support assembly to rotate until the light spot falls on the target position when the light spot formed within the sunlight sensor does not fall on the target position. In other words, the driving assembly can automatically adjust the position of the support assembly based on the position of the light spot, ensuring that the light spot is always at the target position without manual adjustment, thereby improving the testing efficiency of sunlight backflow testing. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an exploded view of a testing device provided in an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the structure of a testing device provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the optical path principle of a testing device provided in an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of the structure of a testing device provided in an embodiment of this application;

[0040] Figure 5 This is an exploded view of a sunlight sensor in a testing device provided in an embodiment of this application;

[0041] Figure 6 This is a front view of a photoresistor in a testing device provided in an embodiment of this application;

[0042] Figure 7 This is a schematic diagram showing the connection between the controller, audio equipment, and photoresistor of a testing device provided in an embodiment of this application.

[0043] Figure label:

[0044] 100. Bracket assembly; 110. First base; 120. Second base; 130. Turntable; 140. Support leg; 111. Bottom wall; 112. First side connecting plate; 113. Second side connecting plate; 121. First side wall; 122. Second side wall;

[0045] 200. Imaging components;

[0046] 300. Sunlight sensor; 310. Housing; 320. Target curved mirror; 330. Photoresistor; 340. Dustproof film; 311. First inner wall; 312. Second inner wall; 313. Opening; 331. Circuit board; 332. First photoresistor; 333. Second photoresistor;

[0047] 400, Drive assembly; 410, First drive motor; 420, Second drive motor; 430, First rotating shaft; 440, Second rotating shaft;

[0048] 500. Head-up display under test; 510. Test curved mirror; 520. Plane mirror; 530. Image generation unit;

[0049] 600. Controller;

[0050] 700. Audio equipment;

[0051] 800. Image acquisition equipment;

[0052] 900, central ray.

[0053] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art.

[0056] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0057] Combination Figure 1 and Figure 2 As shown in the figure, this application provides a testing device, which includes a support assembly 100, an imager 200, a sunlight sensor 300, and a driving assembly 400.

[0058] The bracket assembly 100 supports the head-up display 500 under test. The image-receiving element 200 is connected to the bracket assembly 100, allowing sunlight to pass through and enter the head-up display 500. A sunlight sensor 300 is mounted on the bracket assembly 100 and is electrically connected to the drive assembly 400. It should be noted that when using the testing device provided in this embodiment, the head-up display 500 under test is in operation. The testing device must be placed in a sunny and unobstructed area to ensure that sunlight can enter the head-up display 500. The image-receiving element 200 shown in the accompanying drawings is only a part of the image-receiving element 200. The size of the image-receiving element 200 can be adjusted as needed, and the image-receiving element 200 is translucent. The material and shape of the image-receiving element 200 can be consistent with the material and shape of the windshield of the vehicle on which the head-up display 500 is placed, thereby more realistically simulating a sunlight backflow scenario. The image source of the head-up display 500 under test is magnified and projected onto the image display 200. The image changes can be observed through the image display 200, thereby understanding the performance changes of the head-up display 500 under test.

[0059] The drive component 400 is used to drive the support component 100 to rotate until the light spot falls on the target position when the light spot formed in the sunlight sensor 300 does not fall on the target position. It can be understood that the drive component 400 can automatically adjust the position of the support component 100 based on the position of the light spot, ensuring that the light spot is always at the target position. At this time, the head-up display 500 under test can also rotate synchronously with the support component 100. Since no manual adjustment is required, this not only simplifies the operation steps for testing personnel but also improves the efficiency of adjusting the support component 100, thus improving the testing efficiency of the sunlight backflow test.

[0060] The following is in conjunction with the appendix Figures 1 to 7 The details and functions of the testing apparatus provided in the embodiments of this application will be described in more specific and detailed manner.

[0061] like Figure 7 As shown, in some embodiments, the testing apparatus further includes a controller 600. The sunlight sensor 300 includes a housing 310, a target curved mirror 320, and a photoresistor 330. The target curved mirror 320 and the photoresistor 330 are both located within the housing 310. The photoresistor 330 is electrically connected to the controller 600, and the controller 600 is electrically connected to the drive assembly 400.

[0062] Sunlight, focused into a spot by the target curved mirror 320, falls onto the photoresistor 330, which has a designated target position. The controller 600 controls the drive assembly 400 to rotate the support assembly 100 when the light spot does not fall on the target position. It should be noted that the detection data from the photoresistor 330 can be sent to the controller 600. The controller 600 processes the detection data and obtains corresponding control commands, which are used to control the drive assembly 400 to rotate the support assembly. Since the rotation of the support assembly is automatically adjusted based on the light spot position, the operation for testing personnel is simplified, and testing efficiency is improved.

[0063] like Figure 5 As shown, in some embodiments, the housing 310 includes a first inner wall 311 and a second inner wall 312 disposed opposite to each other. A target curved mirror 320 is mounted on the first inner wall 311. A photoresistor 330 is mounted on the second inner wall 312. Thus, the light spot formed by sunlight being focused by the target curved mirror 320 can fall onto the photoresistor.

[0064] Combination Figure 3 As shown, in some embodiments, the head-up display 500 under test includes a test curved mirror 510 and a plane mirror 520. The direction in which sunlight propagates from the test curved mirror 510 to the plane mirror 520 is the first propagation direction. The direction in which sunlight propagates from the target curved mirror 320 to the photoresistor 330 is the second propagation direction. The first and second propagation directions are consistent, and when the light spot falls on the target position, the first propagation direction is parallel to the principal optical axis of the head-up display 500 under test. It should be noted that "the first and second propagation directions are consistent" means that the first and second propagation directions are parallel. "The first propagation direction is parallel to the principal optical axis of the head-up display 500" means that the first propagation direction is parallel to the light propagation direction of the principal optical axis. This ensures that the light propagation angle of the sunlight sensor 300 is always consistent with the light propagation angle in the head-up display 500 under test.

[0065] It should be noted that the principal optical axis of the head-up display 500 under test refers to the propagation path formed by the central ray 900 among all the optical paths of the head-up display 500 as seen by the human eye on the imaging device. Since this ray propagating along the principal optical axis generally originates from the center of the image generation unit of the head-up display and falls on the windshield, and the first propagation direction is consistent with both the principal optical axis and the second propagation direction, according to the principle of optical path reversibility, if the driving component 400 automatically adjusts to ensure that the light spot formed within the sunlight sensor 300 falls at the target position, and the first propagation direction is parallel to the principal optical axis of the head-up display 500 under test, then this means that the light spot converged by the test curved mirror 510 within the head-up display 500 under test falls at the center of the image generation unit of the head-up display 500 under test. Furthermore, since the image generation unit heats up fastest when the light spot falls at the center of the image generation unit of the head-up display 500 under test, the testing device provided in this embodiment not only ensures that the light spot formed by the sunlight converged by the test curved mirror 510 always falls at the center of the image generation unit, but also improves testing efficiency and accuracy.

[0066] like Figure 5 As shown, in some embodiments, the sunlight sensor 300 also includes a dustproof film 340. The top of the housing 310 has an opening 313. The dustproof film 340 covers the opening 313 and is transparent. This ensures that sunlight can reach the target curved mirror 320 for focusing, while preventing external dust and other impurities from entering the housing 310 and affecting the normal propagation of light, thus improving the reliability of the testing device.

[0067] Combination Figure 5 and Figure 6 As shown, in some embodiments, the photoresistor 330 includes a circuit board 331, a first photoresistor 332, and a plurality of second photoresistors 333. The center of the circuit board 331 is the target position. The first photoresistor 332 is mounted at the target position. The second photoresistors 333 are mounted on the circuit board 331, and the plurality of second photoresistors 333 are centrally symmetrical about the first photoresistor 332. It should be noted that the controller 600 is used to receive detection data sent by the first photoresistor 332 and the second photoresistors 333, and controls the drive assembly 400 to drive the support assembly 100 to rotate based on the detection data. The above-mentioned detection data is used to characterize whether the light spot falls on the corresponding photoresistor. By setting multiple second photoresistors 333, the detection accuracy can be improved, so that the controller 600 can control the drive assembly 400 more precisely, thereby improving the reliability of the testing device.

[0068] The following is combined Figure 3The relative positional relationship between the sunlight sensor 300 and the head-up display 500 under test is further explained as follows: Sunlight rays parallel to the central ray 900 travel from the imaging element to the test curved mirror 510, converge at the test curved mirror 510, and then travel to the plane mirror 520. Finally, the sunlight rays are reflected by the plane mirror 520 to the center of the image generation unit 530. In this embodiment, the target curved mirror 320 of the sunlight sensor 300 maintains the same shape and angle as the test curved mirror 510. The center of the photoresistor 330, i.e., the first photoresistor 332, is located at the intersection of the extension lines of the light rays incident on the plane mirror 520. Therefore, when the light spot shines on the first photoresistor 332, it indicates that the light spot formed in the head-up display 500 under test falls exactly at the center of the image generation unit 530. With this setup, when conducting solar backflow tests, testers do not need to visually observe the position of the light spot. The controller 600 can control the drive component 400 to more precisely adjust the position of the support component 100 based on the detection data of the sunlight sensor 300. This not only simplifies the operation of the testers but also improves the efficiency and accuracy of the test.

[0069] like Figure 7 As shown, in some embodiments, the sunlight sensor 300 also includes an audio device 700, which is electrically connected to the controller 600. The controller 600 is further configured to control the audio device 700 to emit a first alert sound when the light spot falls on the target position. It is understood that the first alert sound can remind the tester that the testing device has reached the testing position, allowing the tester to promptly grasp the angle adjustment status of the testing device and observe the sunlight backflow test process.

[0070] like Figure 7 As shown, in some embodiments, the controller 600 is also used to control the audio device 700 to emit a second prompt tone when the light spot does not fall on the target position. It is understood that the second prompt tone can remind the tester that the current testing device has not yet reached the testing position, allowing the tester to promptly grasp the angle adjustment status of the testing device and observe whether the drive component 400 is in normal working condition, thus ensuring the reliability of the testing device's operation.

[0071] In some embodiments, the controller 600, in response to no light spot falling on the first photoresistor 332 or the second photoresistor 333 within a preset time, controls the audio device 700 to emit a third alert tone. It is understood that the third alert tone can remind the tester that the light spot has not fallen on the target position and that the support assembly 100 needs to be rotated promptly, for example, manually, until the light spot falls on the target position and the first alert tone is emitted. Alternatively, it can remind the tester to perform fault detection on the testing device so that any malfunction can be repaired promptly, ensuring the normal conduct of the test.

[0072] Combination Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the drive assembly 400 includes a first drive motor 410, a second drive motor 420, a first rotating shaft 430 and a second rotating shaft 440, wherein the first rotating shaft 430 and the second rotating shaft 440 are perpendicular to each other.

[0073] The two ends of the first rotating shaft 430 are connected to the first drive motor 410 and the bracket assembly 100, respectively. When the first drive motor 410 rotates, the first rotating shaft 430 rotates synchronously with the first drive motor 410, and the first rotating shaft 430 drives the bracket assembly 100 to rotate around the first rotating shaft 430 as the rotation center. It should be noted that the first rotating shaft 430 can be fixedly connected to the output shaft of the first drive motor 410.

[0074] The two ends of the second rotating shaft 440 are connected to the second drive motor 420 and the bracket assembly 100, respectively. When the second drive motor 420 rotates, the second rotating shaft 440 rotates synchronously with it, causing the bracket assembly 100 to rotate around the second rotating shaft 440 as its center. It should be noted that the second rotating shaft 440 can be fixedly connected to the output shaft of the second drive motor 420. It is understood that since the first rotating shaft 430 and the second rotating shaft 440 are perpendicular to each other, and the bracket assembly 100 can rotate around the first rotating shaft 430 and the second rotating shaft 440 respectively under the drive of the first drive motor 410 and the second drive motor 420, the bracket assembly 100 can be rotated to any angle, that is, the angle of the head-up display 500 to be tested mounted on the bracket assembly 100 can be adjusted, thereby improving the flexibility of adjusting the angle of the head-up display 500 to be tested.

[0075] Combination Figure 1 and Figure 4 As shown, in some embodiments, the support assembly 100 includes a first base 110 and a second base 120. The first base 110 is located above the second base 120 and is used to support the head-up display 500 to be tested.

[0076] The first base 110 includes a bottom wall 111 and a first side connecting plate 112 and a second side connecting plate 113 disposed opposite to each other. One end of the first side connecting plate 112 is connected to the bottom wall 111, and the other end extends in a direction away from the bottom wall 111. One end of the second side connecting plate 113 is connected to the bottom wall 111, and the other end extends in a direction away from the bottom wall 111. The first side connecting plate 112 or the second side connecting plate 113 is connected to a second rotating shaft 440 so that the first base 110 can rotate synchronously with the second rotating shaft 440.

[0077] The second base 120 includes a first sidewall 121 and a second sidewall 122 disposed opposite to each other. The first sidewall 121 is rotatably connected to the first side connecting plate 112, and the second sidewall 122 is rotatably connected to the second side connecting plate 113. The connection point between the first sidewall 121 and the first side connecting plate 112 and the connection point between the second sidewall 122 and the second side connecting plate 113 are both located on the axis of the second rotating shaft 440. Thus, when the second drive motor 420 is in working condition, it can drive the second base 120 to rotate relative to the first base 110 around the second rotating shaft 440.

[0078] Combination Figure 4 As shown, in some embodiments, the imaging element 200 is snapped together with the first base 110, and the imaging element 200 and the bottom wall 111 of the first base 110 form a preset angle. This allows the imaging element 200 to more realistically simulate the windshield of a vehicle, thereby improving the accuracy of the test results.

[0079] Combination Figure 1 and Figure 2 As shown, in some embodiments, the support assembly 100 further includes a turntable 130 and at least two support feet 140, one end of which is connected to the turntable 130 and the other end of which rests against the platform or ground on which the test device is placed, wherein the height of the support feet 140 is adjustable.

[0080] One end of the first rotating shaft 430 is fixedly connected to the bottom of the second base 120, and the other end of the first rotating shaft 430 passes through the corresponding mounting hole on the turntable 130 and is connected to the output shaft of the first drive motor 410. The side of the turntable 130 away from the support foot 140 abuts against the bottom of the second base 120. It can be understood that the turntable 130 is used to support the second base 120 and the structure above the second base 120. When the second drive motor 420 rotates, it can drive the first rotating shaft 430 to rotate, and then the first rotating shaft 430 can drive the second base 120 to rotate smoothly on the turntable 130. This achieves the effect of flexibly adjusting the angle of the bracket assembly 100 and the head-up display 500 and sunlight sensor 300 it supports, simplifying the operation of the tester and improving the test efficiency.

[0081] In some embodiments, the controller 600 is further configured to, when a light spot falls on either of the second photoresistors 333, control the first drive motor 410 and / or the second drive motor 420 to rotate based on the positional relationship between the second photoresistor 333 and the first photoresistor 332, until the light spot falls on the first photoresistor 332. This allows for flexible adjustment of the angle of the bracket assembly 100. It should be noted that the relationship between the first photoresistor 332 and the second photoresistor 333 has a preset correlation with the rotation angle of the first drive motor 410 and the rotation angle of the second drive motor 420.

[0082] like Figure 2 As shown, in some embodiments, there are two head-up displays 500 to be tested, which are mounted side-by-side on the bracket assembly 100. The two head-up displays 500 rotate synchronously with the bracket assembly 100, and their placement angles are the same, thus meeting the testing requirements of a control test and enabling the testing device to meet different testing needs, thereby improving its practicality. Generally, the internal heat dissipation components or optical elements of the two head-up displays 500 are slightly different. It is understood that by comparing the test results of the two head-up displays 500, the structure of the head-up displays 500 can be further improved to enhance their performance.

[0083] like Figure 2 As shown, in some embodiments, the testing apparatus further includes an image acquisition device 800, which is mounted on the support assembly 100, for example, on the first base 110. The image acquisition device 800 corresponds one-to-one with the head-up display 500 under test. The image acquisition device 800 is used to acquire the image content of the head-up display 500 on the imaging element 200, whereby the image content includes the image frame and time. The image acquisition device 800 can be connected to a computing device, and can send the acquired data to the computing device. Thus, the tester can use the computing device to understand in a timely manner the degree and state of the head-up display 500 affected by light spots during the sunlight backflow test, allowing for a more intuitive and accurate understanding of the head-up display 500. Subsequently, the tester can make more precise improvements to the head-up display 500 to enhance its performance.

[0084] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0085] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A testing device, characterized in that, The testing device includes a support assembly (100), an imaging element (200), a sunlight sensor (300), a drive assembly (400), and a controller (600). The bracket assembly (100) is used to support the head-up display (500) to be tested. The imager (200) is connected to the support assembly (100), and the imager (200) allows sunlight to pass through and enter the head-up display (500) under test. The sunlight sensor (300) is mounted on the bracket assembly (100), and the sunlight sensor (300) is electrically connected to the driving assembly (400). The sunlight sensor (300) includes a housing (310), a target curved mirror (320), and a photoresistor (330). The target curved mirror (320) and the photoresistor (330) are both located inside the housing (310). The photoresistor (330) is electrically connected to the controller (600), and the controller (600) is electrically connected to the driving assembly (400). The sunlight is focused into a light spot by the target curved mirror (320) and falls on the photoresistor (330). The photoresistor (330) has a target position. The controller (600) is used to control the drive assembly (400) to drive the bracket assembly (100) to rotate until the light spot falls on the target position when the light spot formed in the sunlight sensor (300) does not fall on the target position; wherein the drive assembly (400) includes a first drive motor (410), a second drive motor (420), a first rotating shaft (430) and a second rotating shaft (440), the first rotating shaft (430) and the second rotating shaft (440) being perpendicular to each other; the two ends of the first rotating shaft (430) are respectively connected to the first drive motor (410) and the bracket assembly (100), wherein the... When the first drive motor (410) rotates, the first rotating shaft (430) rotates synchronously with the first drive motor (410), and the first rotating shaft (430) drives the bracket assembly (100) to rotate around the first rotating shaft (430) as the rotation center; the two ends of the second rotating shaft (440) are respectively connected to the second drive motor (420) and the bracket assembly (100), wherein when the second drive motor (420) rotates, the second rotating shaft (440) rotates synchronously with the second drive motor (420), and the second rotating shaft (440) drives the bracket assembly (100) to rotate around the second rotating shaft (440) as the rotation center.

2. The testing apparatus according to claim 1, characterized in that, The housing (310) includes a first inner wall (311) and a second inner wall (312) disposed opposite to each other. The target curved mirror (320) is installed on the first inner wall (311); The photoresistor (330) is mounted on the second inner wall (312).

3. The testing apparatus according to claim 2, characterized in that, The head-up display under test (500) includes a test curved mirror (510) and a plane mirror (520). The direction in which sunlight propagates from the test curved mirror (510) to the plane mirror (520) is the first propagation direction; The direction in which sunlight propagates from the target curved mirror (320) to the photoresistor (330) is the second propagation direction; Wherein, the first propagation direction and the second propagation direction are the same, and when the light spot falls on the target position, the first propagation direction is parallel to the main optical axis of the head-up display (500) under test.

4. The testing apparatus according to claim 1, characterized in that, The sunlight sensor (300) also includes a dustproof film (340); The top of the housing (310) has an opening (313). The dustproof film (340) covers the opening (313), and the dustproof film (340) is light-transmitting.

5. The testing apparatus according to claim 1, characterized in that, The photoresistor (330) includes a circuit board (331), a first photoresistor (332), and a plurality of second photoresistors (333). The center position of the circuit board (331) is the target position; The first photoresistor (332) is installed at the target location; The second photoresistor (333) is mounted on the circuit board (331), and the plurality of second photoresistors (333) are centrally symmetrical about the first photoresistor (332).

6. The testing apparatus according to claim 1, characterized in that, The sunlight sensor (300) also includes an audio device (700) electrically connected to the controller (600), wherein the controller (600) is further configured to control the audio device (700) to emit a first alert sound when the light spot falls on the target position.

7. The testing apparatus according to claim 6, characterized in that, The controller (600) is also used to control the audio device (700) to emit a second prompt tone when the light spot does not fall on the target position.

8. The testing apparatus according to claim 5, characterized in that, The controller (600) is also used to control the first drive motor (410) and / or the second drive motor (420) to rotate based on the positional relationship between the second photoresistor (333) and the first photoresistor (332) when the light spot falls on any of the second photoresistors (333), until the light spot falls on the first photoresistor (332).

Images