Automotive front windshield transparency detection system

Abstract

The utility model relates to the technical field of automobile parts quality detection, disclose a kind of automobile front windshield transparency detection system. Include: transmission module, for the automobile front windshield is driven to specified position;Light source provides module, for the automobile front windshield is lighted in the case where transmission module automobile front windshield is driven to specified position;Detection module, for detecting the transparency of automobile front windshield.The utility model adopts area array imaging to replace single-point measurement, can assess the transparency uniformity of entire glass one-time, intuitively find local defect, using standard light source and high linearity camera, eliminates environmental interference, measurement result is stable and reliable, meets metrological traceability requirement, automatic detection process, one-key operation, detection can be completed in several seconds and issue whether it meets the determination of safety regulations, greatly improve quality inspection efficiency, the transmissivity distribution diagram and data of each piece of glass can be stored, facilitate quality traceability and analysis.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts quality inspection technology, specifically to an automotive windshield transparency inspection system. Background Technology

[0002] The visible light transmittance (i.e., transparency) of automotive windshields is a critical performance indicator related to driving safety. Regulations in various countries have mandatory requirements for it (e.g., China's GB9656 stipulates no less than 70%) to ensure clear driver visibility, especially at night and in inclement weather. Currently, testing the transparency of automotive glass faces the following problems: Limited laboratory equipment: Traditional spectrophotometers, while highly accurate, are bulky, require demanding environmental conditions, are complex to operate, and can only test small samples, making online or batch testing of finished windshields impossible. Manual assessment lacks reliability, relying entirely on subjective human judgment, failing to provide quantitative data, exhibiting poor consistency, and failing to meet regulatory compliance verification requirements. Existing portable devices lack sufficient accuracy: some simple transmittance measurements are usually single-point measurements, while automotive windshields are often curved and may have regional coloration (such as shading strips). Single-point measurements cannot represent the uniformity of the entire glass surface, easily leading to misjudgments. Due to a lack of specificity, general-purpose transmittance testing equipment does not take into account the composite structure of automotive windshields (such as PVB interlayers, antennas, electric heating wires, etc.), and its measurement spot and method may lead to distorted measurement results.

[0003] Therefore, there is an urgent need for a specialized device that can quickly, comprehensively, and quantitatively test the transparency of finished automotive windshields. Utility Model Content

[0004] The purpose of this invention is to provide a system for detecting the transparency of automotive windshields. This invention uses area array imaging instead of single-point measurement, enabling a one-time assessment of the transparency uniformity of the entire glass, allowing for the direct detection of local defects. Using a standard light source and a high-linearity camera eliminates environmental interference, resulting in stable and reliable measurement results that meet metrological traceability requirements. The automated testing process, with one-button operation, completes the test within seconds and provides a determination of compliance with safety regulations, significantly improving quality inspection efficiency. It can also store the transmittance distribution map and data for each piece of glass, facilitating quality traceability and analysis.

[0005] To achieve the above objectives, this utility model provides a vehicle windshield transparency detection system, the detection system comprising: The transmission module is used to move the car's windshield to a designated position. A light source providing module is used to illuminate the windshield of the vehicle when the transmission module drives the windshield of the vehicle to a designated position; The detection module is used to detect the transparency of a car's windshield.

[0006] Optionally, the light source providing module includes: A linear light source is located at the bottom of the transmission module to provide light. An optical diffuser plate is vertically mounted at the bottom of the transmission module in conjunction with the linear light source.

[0007] Optionally, the light source providing module includes: A light source bracket is disposed at the bottom of the linear light source and connected to the linear light source. It is used to support the linear light source close to the transmission module to illuminate the windshield of the car.

[0008] Optionally, the detection module includes: An optical signal receiving module is used to receive the optical signal from the windshield of the car after it has been illuminated by the light source providing module. A processor, connected to the optical signal receiving module, is used to process the optical signal in order to detect the transparency of the windshield of the car. A signal processing and display module, connected to the processor, is used to display the detection results.

[0009] Optionally, the optical signal receiving module includes: A camera, mounted on top of the transmission module, is used to acquire the light signal after the linear light source penetrates the windshield of the vehicle.

[0010] On the other hand, this utility model also provides a vehicle windshield transparency detection device, the detection device comprising: The transmission module is used to move the car's windshield to a designated position. A light source providing module is used to illuminate the windshield of the vehicle when the transmission module drives the windshield of the vehicle to a designated position; The detection module is used to detect the transparency of a car's windshield.

[0011] Optionally, the light source providing module includes: A linear light source is located at the bottom of the transmission module to provide light. An optical diffuser plate is vertically mounted at the bottom of the transmission module in conjunction with the linear light source.

[0012] Optionally, the light source providing module includes: A light source bracket is disposed at the bottom of the linear light source and connected to the linear light source. It is used to support the linear light source close to the transmission module to illuminate the windshield of the car.

[0013] Optionally, the detection module includes: An optical signal receiving module is used to receive the optical signal from the windshield of the car after it has been illuminated by the light source providing module. A processor, connected to the optical signal receiving module, is used to process the optical signal in order to detect the transparency of the windshield of the car. A signal processing and display module, connected to the processor, is used to display the detection results.

[0014] Optionally, the optical signal receiving module includes: A camera, mounted on top of the transmission module, is used to acquire the light signal after the linear light source penetrates the windshield of the vehicle.

[0015] Through the above technical solution, this utility model provides a vehicle windshield transparency detection system. A transmission module moves the vehicle windshield to a designated position, and a light source module illuminates the windshield while it is in this position. The detection module then measures the transparency of the windshield. This utility model uses area array imaging instead of single-point measurement, enabling a one-time assessment of the overall transparency uniformity of the glass and direct detection of local defects. Using a standard light source and a high-linearity camera eliminates environmental interference, resulting in stable and reliable measurement results that meet metrological traceability requirements. The automated detection process allows for one-click operation, completing the detection and issuing a judgment on compliance with safety regulations within seconds, greatly improving quality inspection efficiency. It can also store the transmittance distribution map and data for each piece of glass, facilitating quality traceability and analysis. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of an embodiment of the automotive windshield transparency detection system.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0019] In this embodiment of the utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] like Figure 1 The diagram shown is a schematic representation of an embodiment of the automotive windshield transparency detection system of this utility model. Figure 1 The detection system includes a transmission module 2, a light source supply module 3, and a detection module 4. Specifically, the transmission module 2 is located on top of the bracket 1 and is used to transport the windshield of the car to a designated position. While the transmission module 2 is transporting the windshield to the designated position, a light source supply module 3 is also provided to illuminate the windshield. Furthermore, a detection module 4 is provided to detect the transparency of the windshield to determine whether the transparency of the windshield under test is acceptable.

[0022] In this embodiment, to enable the light source providing module 3 to provide a large area of ​​light, the light source providing module 3 may include a linear light source and an optical diffuser plate 32. Specifically, the linear light source 31 is disposed at the bottom of the transmission module 2 to provide the light source, and the optical diffuser plate 32 is disposed vertically at the bottom of the transmission module 2 in conjunction with the linear light source 31. In one embodiment of this utility model, the linear light source 31 is a highly stable LED linear light source with a color temperature that conforms to the human eye's visual function (approximately 5500K), and together with the optical diffuser plate 32, it generates a uniform and stable beam of parallel or diffused light to simulate ambient light during the day to illuminate the glass under test.

[0023] In this embodiment, in order to provide a stable light source to the windshield of the car, a light source bracket 33 is also provided at the bottom of the linear light source 31 and connected to the linear light source 31. This bracket supports the linear light source 31 to be close to the transmission module 2 so as to illuminate the windshield of the car and prevent the lighting effect from deteriorating due to excessive distance, which would affect the detection results.

[0024] In this embodiment, to detect the transparency of the car's windshield, the detection module 4 further includes a light signal receiving module, a processor, and a signal processing and display module. Specifically, the light signal receiving module receives the light signal from the car's windshield after being illuminated by the light source providing module 3, and obtains the light intensity distribution after the light source penetrates the windshield. The processor is connected to the light signal receiving module and processes the light signal to detect the transparency of the car's windshield, determining whether the transparency meets the requirements based on the light signal. The signal processing and display module is connected to the processor and displays the detection results, outputting whether the transparency of the car's windshield is qualified.

[0025] In this embodiment, the light signal receiving module also includes a camera 41, disposed on top of the transmission module 2, for acquiring the light signal after the linear light source 31 penetrates the windshield of the vehicle. In one example of this invention, the camera 41 may be a high-resolution, high-linearity scientific-grade CCD or CMOS camera equipped with a fixed-focus lens.

[0026] On the other hand, this utility model also provides a device for detecting the transparency of automotive windshields. Specifically, the detection device includes a transmission module 2, a light source supply module 3, and a detection module 4. Specifically, the transmission module 2 is used to drive the automotive windshield to a designated position. When the transmission module 2 drives the automotive windshield to the designated position, a light source supply module 3 is also provided to provide light to illuminate the automotive windshield. A detection module 4 is also provided to detect the transparency of the automotive windshield to determine whether the transparency of the windshield under test is qualified.

[0027] In this embodiment, to enable the light source providing module 3 to provide a large area of ​​light, the light source providing module 3 may include a linear light source and an optical diffuser plate 32. Specifically, the linear light source 31 is disposed at the bottom of the transmission module 2 to provide the light source, and the optical diffuser plate 32 is disposed vertically at the bottom of the transmission module 2 in conjunction with the linear light source 31. In one embodiment of this utility model, the linear light source 31 is a highly stable LED linear light source with a color temperature that conforms to the human eye's visual function (approximately 5500K), and together with the optical diffuser plate 32, it generates a uniform and stable beam of parallel or diffused light to simulate ambient light during the day to illuminate the glass under test.

[0028] In this embodiment, in order to provide a stable light source to the windshield of the car, a light source bracket 33 is also provided at the bottom of the linear light source 31 and connected to the linear light source 31. This bracket supports the linear light source 31 to be close to the transmission module 2 so as to illuminate the windshield of the car and prevent the lighting effect from deteriorating due to excessive distance, which would affect the detection results.

[0029] In this embodiment, to detect the transparency of the car's windshield, the detection module 4 further includes a light signal receiving module, a processor, and a signal processing and display module. Specifically, the light signal receiving module receives the light signal from the car's windshield after being illuminated by the light source providing module 3, and obtains the light intensity distribution after the light source penetrates the windshield. The processor is connected to the light signal receiving module and processes the light signal to detect the transparency of the car's windshield, determining whether the transparency meets the requirements based on the light signal. The signal processing and display module is connected to the processor and displays the detection results, outputting whether the transparency of the car's windshield is qualified.

[0030] In this embodiment, the light signal receiving module also includes a camera 41, disposed on top of the transmission module 2, for acquiring the light signal after the linear light source 31 penetrates the windshield of the vehicle. In one example of this invention, the camera 41 may be a high-resolution, high-linearity scientific-grade CCD or CMOS camera equipped with a fixed-focus lens.

[0031] When this detection system is working, it acquires the background brightness distribution map under a standard light source when the car windshield is not placed through the optical signal receiving module, which serves as the detection benchmark. Then, it acquires the sample brightness distribution map of the car windshield sample under the standard light source. The processor performs a pixel-by-pixel comparison between the background brightness distribution map and the sample brightness distribution map to obtain the transmittance of each pixel of the car windshield. Based on the transmittance, it sets the average transmittance of different areas of the car windshield and sets a transmittance safety threshold for different areas of the car windshield. It then acquires the brightness distribution map of the car windshield to be tested and compares it pixel-by-pixel with the background brightness distribution map to obtain the transmittance of each pixel of the car windshield. Finally, it compares the transmittance of different areas of the car windshield to be tested with the transmittance safety threshold and outputs the result of whether it is qualified.

[0032] Through the above technical solution, this utility model provides a vehicle windshield transparency detection system. A transmission module 2 moves the vehicle windshield to a designated position, and a light source module 3 illuminates the windshield while it is in this position. A detection module 4 detects the transparency of the windshield. This utility model uses area array imaging instead of single-point measurement, enabling a one-time assessment of the transparency uniformity of the entire glass and direct detection of local defects. Using a standard light source and a high-linearity camera eliminates environmental interference, resulting in stable and reliable measurement results that meet metrological traceability requirements. The automated detection process allows for one-click operation, completing the detection and issuing a judgment on whether it complies with safety regulations within seconds, greatly improving quality inspection efficiency. It can store the transmittance distribution map and data for each piece of glass, facilitating quality traceability and analysis.

[0033] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. This includes combining various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A system for detecting the transparency of automotive windshields, characterized in that, The detection system includes: The transmission module is used to move the car's windshield to a designated position. A light source providing module is used to illuminate the windshield of the vehicle when the transmission module drives the windshield of the vehicle to a designated position; The detection module is used to detect the transparency of a car's windshield.

2. The detection system of claim 1, wherein, The light source providing module includes: A linear light source is located at the bottom of the transmission module to provide light. An optical diffuser plate is vertically mounted at the bottom of the transmission module in conjunction with the linear light source.

3. The detection system of claim 2, wherein, The light source providing module includes: A light source bracket is disposed at the bottom of the linear light source and connected to the linear light source. It is used to support the linear light source close to the transmission module to illuminate the windshield of the car.

4. The detection system according to claim 2, characterized in that, The detection module includes: An optical signal receiving module is used to receive the optical signal from the windshield of the car after it has been illuminated by the light source providing module. A processor, connected to the optical signal receiving module, is used to process the optical signal in order to detect the transparency of the windshield of the car. A signal processing and display module, connected to the processor, is used to display the detection results.

5. The detection system of claim 4, wherein, The optical signal receiving module includes: A camera, mounted on top of the transmission module, is used to acquire the light signal after the linear light source penetrates the windshield of the vehicle.

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