Automobile hud high temperature test equipment

Abstract

The utility model discloses a kind of automobile HUD high-temperature test equipment, including machine table and controller, baking oven is installed on machine table, the side of machine table is equipped with mechanical arm, camera is installed at the end of mechanical arm, baking oven, mechanical arm and camera are electrically connected with controller respectively;Product clamp is equipped in baking oven, product clamp is used to install product to be tested, product to be tested on product clamp can be electrically connected with controller, projection lens is installed on the upper end surface of baking oven, projection lens is set directly above product clamp, product to be tested on product clamp can project image on projection lens, mechanical arm can drive camera and projection lens alignment, camera is used for shooting image on projection lens.The utility model can realize the automatic high-temperature test of HUD product by only one equipment, improve the efficiency of test;Moreover, photographing is compared using camera, and the consistency of test result can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive HUD testing equipment, specifically to an automotive HUD high-temperature testing device. Background Technology

[0002] A head-up display (HUD), also known as a head-up display device, works by projecting important driving information, such as vehicle status information and real-time intersection views, onto a projection medium, such as a windshield or a specially designed screen, through a designed optical path. This assists driving by preventing drivers from looking down at instrument panels or other driver assistance devices, thus avoiding safety hazards and increasing driving safety.

[0003] In practical applications, cars are often parked outdoors, resulting in high interior temperatures; especially in hot summers, these temperatures can sometimes exceed 70°C. To ensure that HUDs function properly after being baked at high temperatures, HUD products generally undergo high-temperature resistance testing before leaving the factory. Currently, there is a lack of dedicated testing equipment. Typically, the HUD is heated in an oven, and then its functionality is tested manually. This method is not only inefficient but also difficult to maintain consistency with manual operation, leading to compromised product quality. Utility Model Content

[0004] To address some or all of the problems existing in the prior art, this utility model provides a high-temperature testing device for automotive HUDs, including a machine base and a controller. A baking oven is mounted on the machine base, and a robotic arm is located on one side of the machine base. A camera is mounted at the end of the robotic arm. The baking oven, robotic arm, and camera are electrically connected to the controller. A product fixture is provided inside the baking oven for mounting the product to be tested. The product to be tested on the product fixture can be electrically connected to the controller. A projection lens is mounted on the upper surface of the baking oven, positioned directly above the product fixture. The product to be tested on the product fixture can project an image onto the projection lens. The robotic arm can drive the camera to align with the projection lens, and the camera is used to capture the image on the projection lens.

[0005] As a further improvement of this utility model, a hollow hole is provided on the upper end surface of the baking oven at the position corresponding to the projection lens, and a transparent glass is provided on the hollow hole, and the transparent glass is sealed to the baking oven.

[0006] As a further improvement of this utility model, mounting seats are provided on the left and right sides of the transparent glass, the mounting seats are detachably connected to the baking oven, and the mounting seats are provided with snap-fit ​​blocks, and the projection lens is detachably connected to the snap-fit ​​blocks.

[0007] As a further improvement of this utility model, the upper surface of the baking oven is provided with a lens calibration component, which is located directly in front of the side of the projection lens away from the camera, and is used to calibrate the alignment of the camera and the projection lens.

[0008] As a further improvement of this utility model, the lens calibration assembly includes a calibration bracket connected to the baking oven. The calibration bracket is provided with a light-emitting plate and a calibration plate. The calibration plate is pressed onto the light-emitting plate. The calibration plate is provided with a plurality of calibration holes. The light emitted by the light-emitting plate can pass through the calibration holes, and the camera can capture images of the calibration holes.

[0009] As a further improvement of this utility model, there are nine calibration holes, and the nine calibration holes are arranged in a three-row, three-column array on the calibration plate.

[0010] As a further improvement of this utility model, the baking oven is provided with a lifting device, and the product clamp is connected to the output end of the lifting device, and the lifting device can drive the product clamp to move up and down.

[0011] As a further improvement of this utility model, the lifting device includes a fixed frame and a cross telescopic frame. The fixed frame is provided with a rotatable adjusting screw. One end of the adjusting screw is provided with an adjusting handwheel. A transverse slider is sleeved on the adjusting screw. One end of the cross telescopic frame is hinged to the fixed frame, and the other end is hinged to the transverse slider. The output end of the cross telescopic frame is provided with a lifting platform. The product clamp is connected to the lifting platform.

[0012] As a further improvement of this utility model, the fixed frame is provided with a plurality of lifting guide rods, and the lifting platform is provided with lifting guide sleeves at corresponding positions to the lifting guide rods. The lifting guide rods pass through the corresponding lifting guide sleeves, and the lifting guide rods are slidably connected to the lifting guide sleeves.

[0013] As a further improvement of this utility model, the baking oven is provided with an opening and closing door, one side of which is hinged to the baking oven, and the other side is detachably connected to the baking oven.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention enables automated high-temperature resistance testing of HUD products, requiring only one device and thus improving testing efficiency. Furthermore, using a camera for image comparison enhances the consistency of test results compared to manual comparison, thereby improving the overall product quality of the HUD. In the specific testing process, the HUD product is mounted on a product fixture and connected to a controller. Then, an oven is controlled to heat the HUD product. Next, the HUD product is controlled to project an image onto a projection lens. A robotic arm is then controlled to align the camera with the projection lens and capture the image on the lens, thus obtaining the projected image of the HUD product. The controller then compares the projected image with the image to determine if the HUD product's high-temperature resistance performance is acceptable. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0018] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present utility model;

[0019] Figure 3 This is an exploded structural diagram of the lens calibration component in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the lifting device in its extreme lowering state in an embodiment of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the lifting device in the extreme state of this utility model embodiment. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0023] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figure 1-5 As shown, a high-temperature testing device for automotive HUD includes a machine base 1 and a controller. A baking oven 2 is mounted on the machine base 1, and a robotic arm 3 is mounted on one side of the machine base 1. Casters and support feet are respectively installed at the lower ends of the mounting platforms of the machine base 1 and the robotic arm 3. The casters facilitate the movement and transport of the automotive HUD high-temperature testing device, and the support feet ensure that the machine base 1 and the robotic arm 3 can be placed stably on the ground or platform. A camera 4 is mounted at the output end of the robotic arm 3. The robotic arm 3 can move freely within multiple degrees of freedom, thereby driving the camera 4 to a suitable position. The baking oven 2, the robotic arm 3, and the camera 4 are electrically connected to the controller. The controller can control the robotic arm 3 to drive the camera 4 to a preset shooting position and control the camera 4 to take pictures. It can also control the heating of the baking oven 2. The controller can use existing control devices, and the controller integrates preset control programs, such as a PLC control system, etc., which is not limited in this invention.

[0026] The baking oven 2 is equipped with a product fixture 5, which is used to mount the HUD product to be tested. The product to be tested on the product fixture 5 can be electrically connected to the controller. During testing, after the product is mounted on the product fixture 5, it must be electrically connected to the controller so that the product to be tested can be controlled by the controller. A projection lens 6 is mounted on the upper surface of the baking oven 2. The projection lens 6 is positioned directly above the product fixture 5. The product to be tested on the product fixture 5 can project an image onto the projection lens 6. The robotic arm 3 can drive the camera 4 to align with the projection lens 6. The camera 4 is used to capture the image on the projection lens 6.

[0027] During testing, the HUD product to be tested is first installed on the product fixture 5 and connected to the controller. Then, the baking oven 2 is controlled to heat the HUD product. After that, the HUD product is controlled to work, and the HUD product will project an image onto the projection lens 6. Then, the robotic arm 3 is controlled to drive the camera 4 to align with the projection lens 6 and to capture the image on the projection lens 6 through the camera 4, thereby obtaining the projected image of the HUD product. The controller can then compare the image to determine whether the projected image of the HUD product is normal, thereby determining whether the high temperature resistance performance of the HUD product is qualified.

[0028] This automotive HUD high-temperature testing equipment enables automated high-temperature resistance testing of HUD products. Only one device is needed to complete the process, reducing manual intervention and improving testing efficiency. Furthermore, using camera 4 for image comparison enhances the consistency of test results compared to manual judgment, thereby improving the overall product quality of the HUD.

[0029] To ensure that the product under test on the product fixture 5 can project an image onto the projection lens 6, a perforation is provided on the upper surface of the oven 2 at a position corresponding to the projection lens 6. A transparent glass 7 is installed over the perforation and is sealed to the oven 2. During testing, the product under test projects an image through the transparent glass 7 over the perforation, thus projecting the image onto the projection lens 6. The installation of the transparent glass 7 makes the oven 2 a closed enclosure, ensuring that it can heat the HUD product to meet high-temperature testing requirements.

[0030] To facilitate the installation of the projection lens 6, mounting bases 8 are respectively provided on the left and right sides of the transparent glass 7. The mounting bases 8 are detachably connected to the baking oven 2, and each mounting base 8 is provided with a snap-fit ​​block 9, which is detachably connected to the projection lens 6. The use of detachable mounting bases 8 and detachable installation method for the projection lens 6 is to facilitate the replacement of different types of projection lenses 6 to meet the testing needs of different types of products and improve the versatility of the equipment.

[0031] Because the robotic arm 3 and camera 4 are located on one side of the machine 1, the position of camera 4 needs to be calibrated before testing to ensure that camera 4 can accurately capture the image on the projection lens 6. To calibrate camera 4, a lens calibration assembly is provided on the upper surface of the baking oven 2. The lens calibration assembly is located directly in front of the projection lens 6 on the side away from camera 4, and is used to calibrate the alignment between camera 4 and projection lens 6. Both the lens calibration assembly and projection lens 6 are fixedly mounted on the baking oven 2; therefore, calibrating the position of camera 4 and projection lens 6 can be achieved by calibrating the position of camera 4 and the lens calibration assembly. Before testing, the robotic arm 3 drives camera 4 to align with the lens calibration assembly, ensuring that camera 4 and projection lens 6 are aligned and that camera 4 can accurately capture the image on projection lens 6.

[0032] like Figure 3 As shown, in this embodiment, the lens calibration assembly includes a calibration bracket 10, which is fixedly mounted on the upper surface of the baking oven 2 with screws. The calibration bracket 10 has a light-emitting plate 11 and a calibration plate 12, with the calibration plate 12 pressing onto the light-emitting plate 11. The calibration plate 12 has multiple calibration holes 13, allowing light emitted from the light-emitting plate 11 to pass through the calibration holes 13, which the camera 4 can capture. During calibration, the light emitted from the light-emitting plate 11 illuminates the calibration plate 12 and passes through the calibration holes 13, making the calibration holes 13 bright. Then, the robotic arm 3 drives the camera 4 to move, aligning the center of the camera 4 with each calibration hole 13. The camera 4 captures images of each calibration hole 13 and feeds them back to the controller. The controller calculates the position of the projection lens 6, thus aligning the camera 4 with the projection lens 6.

[0033] By setting multiple calibration holes 13, the position of the camera 4 can be calibrated multiple times, thereby improving the accuracy of the calibration. In this embodiment, there are nine calibration holes 13, and the nine calibration holes 13 are distributed in a three-row, three-column array on the calibration plate 12. In other embodiments, the number and distribution of calibration holes 13 can also be any other form.

[0034] In this embodiment, the light-emitting board 11 is an LED light board, which is connected to an external power supply through a wiring harness; in other embodiments, the light-emitting board 11 may also be other light-emitting devices or structures, and this utility model does not limit this.

[0035] To facilitate the installation of the product to be tested into the baking oven 2, an opening and closing door 14 is installed at one end of the baking oven 2. One side of the opening and closing door 14 is hinged to the baking oven 2, and the other side is detachably connected to the baking oven 2. Opening the opening and closing door 14 facilitates the loading and unloading of the product on the product clamp 5; closing the opening and closing door 14 makes the baking oven 2 a closed box, which facilitates the heating of the HUD product and meets the requirements of high-temperature testing.

[0036] The baking oven 2 is equipped with a lifting device 15. The product clamp 5 is fixedly installed on the output end of the lifting device 15. The lifting device 15 can drive the product clamp 5 to move up and down, facilitating the loading and unloading of products on the product clamp 5, and also facilitating the transfer of products on the product clamp 5 to be aligned with the projection lens 6. When it is necessary to load or unload products on the product clamp 5, the lifting device 15 can be operated to drive the product clamp 5 to descend, causing the product clamp 5 to descend to the position of the opening and closing door 14. At this time, the operator can conveniently load or unload products on the product clamp 5 through the opening and closing door 14. When testing is required, the lifting device 15 can be operated to drive the product clamp 5 to rise until the product to be tested on the product clamp 5 is aligned with the projection lens 6.

[0037] Specifically, such as Figure 4-5 As shown, the lifting device 15 includes a fixed frame 151 and a cross-shaped telescopic frame 152. A rotatable adjusting screw 153 is mounted on the fixed frame 151, and a transverse slider 154 is sleeved on the adjusting screw 153. One end of the cross-shaped telescopic frame 152 is hinged to the fixed frame 151, and the other end is hinged to the transverse slider 154. A lifting platform 155 is mounted on the output end of the cross-shaped telescopic frame 152, and the product clamp 5 is detachably connected to the lifting platform 155. During operation, rotating the adjusting screw 153 drives the transverse slider 154 to move, thereby driving the cross-shaped telescopic frame 152 to open or close. Specifically, opening the cross-shaped telescopic frame 152 drives the lifting platform 155 and the product clamp 5 to rise; closing the cross-shaped telescopic frame 152 drives the lifting platform 155 and the product clamp 5 to descend, thus achieving the purpose of driving the product clamp 5 to move up and down.

[0038] The cross telescopic frame 152 can adopt any existing telescopic cross structure device, and its specific structure will not be described in detail in this article.

[0039] The mounting bracket 151 is equipped with a first limiting structure and a second limiting structure, which can be connected to the lifting platform 155 respectively. Specifically, when the lifting platform 155 rises to its limit position, the first limiting structure can engage and fix with the lifting platform 155, thereby limiting the limit position of the lifting platform 155's rise and ensuring that the lifting platform 155 can rise to the same position each time, so that the HUD product on the product fixture 5 can be aligned with the projection lens 6, improving the stability of the testing operation; when the lifting platform 155 descends to its limit position, the second limiting structure can abut against the lower end surface of the lifting platform 155, supporting the lifting platform 155, thereby limiting the limit position of the lifting platform 155's descent and ensuring that the lifting platform 155 can descend to the same position each time, facilitating the loading and unloading of the HUD product on the product fixture 5.

[0040] For easy adjustment, an adjustment handwheel 156 is installed at one end of the adjustment screw 153. The user can drive the adjustment screw 153 to rotate by turning the adjustment handwheel 156, which in turn drives the lifting platform 155 to move up and down, thus realizing the function of lifting and adjusting.

[0041] A locking screw 157 is provided on the fixed frame 151 at a position corresponding to the adjusting screw 153. The locking screw 157 is adjustablely limited to the fixed frame 151, and one end of the locking screw 157 can abut against the adjusting screw 153. Under normal circumstances, the locking screw 157 is in the locked state, and one end of the locking screw 157 abuts against the adjusting screw 153, thereby limiting and fixing the adjusting screw 153 and preventing it from rotating, thus ensuring the structural stability of the manual lifting adjustment device. When it is necessary to adjust the lifting platform 155, the locking screw 157 can be loosened first to disengage it from the adjusting screw 153. Then, the adjusting handwheel 156 can be rotated to drive the adjusting screw 153 to rotate, thereby driving the lifting platform 155 to move up and down.

[0042] To limit and guide the lifting stroke of the lifting platform 155, four lifting guide rods 158 are installed on the fixed frame 151, and the four lifting guide rods 158 are rectangularly distributed at the four corner positions of the fixed frame 151. Lifting guide sleeves 159 are respectively provided at corresponding positions on the lifting platform 155 corresponding to the lifting guide rods 158. The lifting guide rods 158 pass through the corresponding lifting guide sleeves 159, and the lifting guide rods 158 and lifting guide sleeves 159 are slidably connected. During manual rotation of the adjusting screw 153, the lifting platform 155 is driven to move up and down, causing the lifting guide sleeves 159 to slide on the lifting guide rods 158. The cooperation between the lifting guide sleeves 159 and the lifting guide rods 158 limits and guides the lifting direction of the lifting platform 155, improving the accuracy and stability of the adjustment.

[0043] In other embodiments, the number of lifting guide rods 158 can also be any other number, and this utility model does not limit this.

[0044] The first limiting structure includes a mounting block 1510, which is fixedly connected to the end of the lifting guide rod 158 away from the fixed frame 151. The mounting block 1510 is equipped with a locking buckle 1511, which can be engaged and fixed with the lifting platform 155. Normally, the locking buckle 1511 is in the open state. When the lifting platform 155 rises to its limit position, the operator can manually operate the locking buckle 1511 to engage and fix it with the lifting platform 155. This locking buckle 1511 limits and fixes the lifting platform 155 to the fixed frame 151, ensuring that the lifting platform 155 rises to a consistent height each time, thus ensuring the consistent height of the product fixture 5 and improving processing stability. The locking buckle 1511 can adopt any existing structure; its specific structure will not be described in detail here.

[0045] The second limiting structure includes two limiting blocks 1512 fixedly mounted on the fixed frame 151. The two limiting blocks 1512 are symmetrically distributed along the center line of the fixed frame 151, and the limiting blocks 1512 can abut against the lower end face of the lifting platform 155. When the adjusting handwheel 156 drives the lifting platform 155 to descend, when the lifting platform 155 descends to its limit position, the lower end face of the lifting platform 155 will abut against the two limiting blocks 1512. The two limiting blocks 1512 are used to position the lower limit position of the lifting platform 155, thereby ensuring that the lifting platform 155 can descend to a uniform height each time.

[0046] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A high-temperature testing device for automotive HUD, characterized in that: The device includes a machine base and a controller. A baking oven is installed on the machine base, and a robotic arm is provided on one side of the machine base. A camera is installed at the end of the robotic arm. The baking oven, robotic arm, and camera are electrically connected to the controller. The baking oven is equipped with a product fixture for mounting the product to be tested. The product to be tested on the product fixture can be electrically connected to the controller. A projection lens is mounted on the upper surface of the baking oven and is positioned directly above the product fixture. The product to be tested on the product fixture can project an image onto the projection lens. The robotic arm can drive the camera to align with the projection lens, and the camera is used to capture the image on the projection lens.

2. The automotive HUD high-temperature testing equipment according to claim 1, characterized in that: The upper surface of the baking oven has a perforated hole at the position corresponding to the projection lens, and a transparent glass is provided on the perforated hole, which is sealed to the baking oven.

3. The automotive HUD high-temperature testing equipment according to claim 2, characterized in that: Mounting seats are provided on the left and right sides of the transparent glass, and the mounting seats are detachably connected to the baking oven. Each mounting seat is provided with a snap-fit ​​block, and the projection lens is detachably connected to the snap-fit ​​block.

4. The automotive HUD high-temperature testing equipment according to claim 1, characterized in that: The upper surface of the baking oven is provided with a lens calibration component, which is located directly in front of the side of the projection lens away from the camera. The lens calibration component is used to calibrate the alignment between the camera and the projection lens.

5. The automotive HUD high-temperature testing equipment according to claim 4, characterized in that: The lens calibration assembly includes a calibration bracket connected to the baking oven. The calibration bracket is provided with a light-emitting plate and a calibration plate. The calibration plate is pressed onto the light-emitting plate. The calibration plate is provided with multiple calibration holes. The light emitted by the light-emitting plate can pass through the calibration holes, and the camera can capture images of the calibration holes.

6. The automotive HUD high-temperature testing equipment according to claim 5, characterized in that: There are nine calibration holes, which are arranged in a three-row, three-column array on the calibration plate.

7. The automotive HUD high-temperature testing equipment according to any one of claims 1-6, characterized in that: The baking oven is equipped with a lifting device, and the product clamp is connected to the output end of the lifting device. The lifting device can drive the product clamp to move up and down.

8. The automotive HUD high-temperature testing equipment according to claim 7, characterized in that: The lifting device includes a fixed frame and a cross telescopic frame. The fixed frame is equipped with a rotatable adjusting screw. One end of the adjusting screw is equipped with an adjusting handwheel. A transverse slider is sleeved on the adjusting screw. One end of the cross telescopic frame is hinged to the fixed frame, and the other end is hinged to the transverse slider. The output end of the cross telescopic frame is equipped with a lifting platform, and the product clamp is connected to the lifting platform.

9. The automotive HUD high-temperature testing equipment according to claim 8, characterized in that: The fixed frame is provided with multiple lifting guide rods, and the lifting platform is provided with lifting guide sleeves at corresponding positions to the lifting guide rods. The lifting guide rods pass through the corresponding lifting guide sleeves, and the lifting guide rods are slidably connected to the lifting guide sleeves.

10. The automotive HUD high-temperature testing equipment according to any one of claims 1-6 or any one of claims 8-9, characterized in that: The baking oven is equipped with an opening and closing door, one side of which is hinged to the baking oven, and the other side is detachably connected to the baking oven.

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