System and method for detecting tire anomalies using tire tread patterns

Abstract

The present invention relates to the technical field of vehicle maintenance and discloses a system and method for detecting tire abnormalities using tire tread patterns. The system includes a laser emission module, a camera module, an image processing module, an image comparison module, and an indication module. The method uses a laser to generate a laser feature line, then forms the laser feature line into a continuous broken line, and then compares the standard broken line with the test broken line to quickly judge and monitor the abnormal conditions of the tire tread. The system and method provided by the present invention have the characteristics of simplicity and high efficiency. At the same time, the system and method provided by the present invention can be applied to real-time monitoring and early warning in the vehicle driving environment, and can also be applied to tire detection in a repair factory, expanding the scope of application.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile maintenance, and particularly to a system and method for detecting tire abnormalities by using tire tread patterns. Background Art

[0002] With the development of the automobile industry, automobiles have become one of the most commonly used means of transportation in people's lives. As the only component that contacts the road surface with the wheels, the tire not only supports the overall weight of the automobile but also provides the driving force for the automobile to travel, which is closely related to driving safety. Tires are consumables. During daily driving, the vehicle load and road surface reaction forces will cause more or less wear on the tire tread. When the wear reaches a certain level, if not dealt with in time, a series of serious consequences such as wheel hub deformation and tire blowout may occur. At the same time, due to the tread pattern on the automobile tire, foreign objects are likely to be embedded in the tread pattern during driving. If not discovered and dealt with in time, it may also cause consequences such as tire blowout of the automobile.

[0003] Therefore, it is very necessary to detect tire abnormalities in time. However, currently, the detection of tire abnormalities in automobiles usually needs to be carried out after the vehicle stops, and real-time detection and monitoring cannot be achieved. Therefore, there is an urgent need for a system and method that can detect tire abnormalities in real time. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a system for detecting tire abnormalities by using tire tread patterns, including:

[0005] A laser emission module, configured to emit laser towards the tire tread to generate a laser feature line;

[0006] A camera module, configured to capture the laser feature line on the tire tread;

[0007] An image processing module, connected to the output end of the camera module, configured to make the captured laser feature line into a continuous broken line graph;

[0008] An image comparison module, connected to the output end of the image processing module, configured to compare a preset standard continuous broken line graph with a real-time continuous broken line graph detected in real time.

[0009] Further, the laser emitted by the laser emission module is linear laser.

[0010] Further, the shooting frequency of the camera module is unit time * tire rotation speed / laser width.

[0011] Further, the system further includes: an indication module, connected to the output end of the image comparison module, configured to indicate the tire state.

[0012] Furthermore, the indicating module is an indicator light.

[0013] Furthermore, the system further includes: a power supply module and / or a communication module.

[0014] Furthermore, the communication module includes a wireless communication module or a wired communication module.

[0015] The present invention also provides a method for real-time detection of tire abnormalities using any one of the above systems, including:

[0016] Setting of a standard continuous broken line graph: Using the laser emission module to perform laser scanning on a standard tire, using the imaging module to photograph and record standard feature lines, and using the image processing module to connect the standard feature lines in sequence to form a standard broken line, thereby generating a standard continuous broken line graph;

[0017] Generation of a test statistical graph: Using the laser emission module to perform laser scanning on a test tire, using the imaging module to photograph and record test feature lines, and using the image processing module to connect the test feature lines in sequence to form a test broken line;

[0018] Judging whether the test tire has abnormalities: Using the image comparison module to compare the obtained standard broken line and the test broken line. When there are differences between the test broken line and the standard broken line, it indicates that the test tire has abnormalities;

[0019] When it is judged that the test tire is abnormal, judging the type of abnormality: When the height of the test broken line is lower than the height of the standard broken line, it indicates that the test tire has wear;

[0020] When the test tire has wear, judging the degree of wear: Judging the degree of wear according to a preset standard value and safety value.

[0021] Furthermore, the laser scanning is linear laser scanning; the shooting frequency = unit time * wheel rotation speed / laser width.

[0022] Furthermore, when the height of the test broken line is higher than the height of the standard broken line, it indicates that there is a foreign object on the test tire.

[0023] Further, the specific method for judging the wear degree is as follows: when the difference between the standard broken line height of the standard continuous broken line graph and the test broken line height of the test broken line graph is greater than the sum of the preset standard value and the preset safety value, it is judged as mild wear; when the difference between the broken line height of the standard continuous broken line graph and the test broken line height of the test broken line graph is greater than the preset safety value and less than the sum of the preset standard value and the preset safety value, it is judged as moderate wear; when the difference between the broken line height of the standard continuous broken line graph and the test broken line height of the test broken line graph is less than the preset safety value, it is judged as severe wear.

[0024] Further, the method further includes:

[0025] using the indication module to indicate tire abnormalities.

[0026] Compared with the prior art, its beneficial effects are as follows:

[0027] The present invention provides a system and method for detecting tire abnormalities using tire tread patterns. The present invention makes the laser feature lines generated by the laser into continuous broken lines, and then compares the standard broken line with the test broken line to judge and monitor the abnormal conditions of the tire tread. The system and method provided by the present invention have the characteristics of simplicity and high efficiency. At the same time, the system and method provided by the present invention can be applied to real-time monitoring and early warning in the vehicle driving environment, and can also be applied to tire detection in a repair factory, expanding the scope of application. Description of the Drawings

[0028] Figure 1 is a schematic diagram of the relative position relationship between the system for detecting tire abnormalities using tire tread patterns in the embodiment of the present invention and the tire tread;

[0029] Figure 2 is a functional block diagram of the system for detecting tire abnormalities using tire tread patterns in the embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the laser feature line on the tire tread in the embodiment of the present invention;

[0031] Figure 4 is a schematic flowchart of the method for real-time detecting tire abnormalities using tire tread patterns in the embodiment of the present invention.

[0032] In the figure, 1, laser emission module; 2, camera module; 3, indicator light; 4, display screen; 5, tire. Detailed Embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference signs throughout indicate the same or similar elements or elements having the same or similar functions. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axis", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0037] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed", "joined", "hinged", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] An embodiment of the present invention discloses a system for detecting tire abnormalities using tire tread patterns, including:

[0039] A laser emission module 1 that emits linear laser light for emitting laser light onto the tire tread to generate a laser characteristic line; the linear laser characteristic line generated by the linear laser is beneficial to the accuracy of positioning the tire abnormality position.

[0040] Preferably, the linear laser is emitted laterally onto the tire tread pattern to obtain a laser characteristic line; a schematic diagram of the laser characteristic line on the tread is as Figure 3 shown.

[0041] The camera module 2 is used to capture the laser feature line on the tire tread. The shooting frequency of the camera module is the tire rotation speed per unit time * the laser width. The camera module can also be used alone to capture videos or images of the tire tread of an automobile.

[0042] The image processing module is connected to the output end of the camera module and is used to make a continuous broken line graph of the captured laser feature line.

[0043] The image comparison module is connected to the output end of the image processing module and is used to compare a preset standard continuous broken line graph with a real-time continuous broken line graph detected in real time.

[0044] The indication module is connected to the output end of the image comparison module and is used to indicate the tire status. The indication module can be an optional indicator light 3 or a display screen 4, or both the indicator light 3 and the display screen 4 can be used simultaneously.

[0045] Optionally, there is one or more indicator lights 3. The indicator light 3 can be optionally set inside the automobile cockpit, preferably on the instrument panel inside the automobile cockpit, which is convenient for the driver to detect abnormal conditions of the automobile tires during driving; the indicator light 3 can also be optionally set outside. Preferably, the indicator light 3 shows different colors or blinks at different frequencies in different tire states. The preferred indication method is as follows: when the judgment result of the image comparison module is normal, the indicator light 3 shows a green light; when the judgment result of the image comparison module is moderate wear, the indicator light 3 shows a yellow light; when the judgment result of the image comparison module is severe wear, the indicator light 3 shows a red light; when the image comparison module determines that there is a foreign object in the tire, the indicator light 3 shows a flashing red light. Different display situations of the indicator light 3 are used to clearly master the abnormal types or states of the tires.

[0046] The display screen 4 can be optionally set outside, which is convenient for maintenance and inspection personnel to master the abnormal conditions of the automobile tires when detecting the abnormal conditions of the automobile tires outside the automobile. The display screen 4 can be optionally set inside the automobile cockpit, preferably on the instrument panel inside the automobile cockpit, which is convenient for the driver to detect abnormal conditions of the automobile tires during driving; the display screen 4 can be optionally set outside, which is convenient for maintenance and inspection personnel to master the abnormal conditions of the automobile tires when detecting the abnormal conditions of the automobile tires outside the automobile. Optionally, the display screen 4 can display the continuous broken line graph generated by the image processing module, or can display the picture images or video images collected by the camera module, or can display the result information after comparison by the image comparison module.

[0047] The system further includes a power supply module and / or a communication module. The communication module includes a wireless communication module or a wired communication module and is used for information transmission and reception.

[0048] Figure 1Schematic diagram of the relative position relationship between the system for detecting tire abnormalities using the tire tread pattern and the tread surface in an embodiment of the present invention. Among them, the system for detecting tire abnormalities using the tire tread pattern is only a preferred embodiment.

[0049] An embodiment of the present invention discloses a method for real-time detection of tire abnormalities by the above system, including:

[0050] S1. Setting of the standard continuous broken line graph:

[0051] Using the laser emission module to perform laser scanning on a standard tire, using the camera module to photograph and record the standard feature lines, and using the image processing module to connect the standard feature lines in sequence to form a standard broken line, generating a standard continuous broken line graph; the shooting frequency is unit time * tire rotation speed / laser width.

[0052] Among them, the tire rotation speed = the distance traveled per second at the real-time speed / tire circumference; the standard tire is the same as the test tire and has an intact tire tread.

[0053] Among them, the unit time can be adjusted according to the speed of the user's actual application. For example, for a tire with a circumference of 2.27 m, when detecting at a speed of 100 km / h, its tire rotation speed is 12.24 r / s, and its unit time can be set to 0.1 s.

[0054] S2. Generation of the test statistical graph:

[0055] Using the laser emission module to perform laser scanning on the test tire, using the camera module to photograph and record the test feature lines, and using the image processing module to connect the test feature lines in sequence to form a test broken line; the shooting frequency is the same as that in S1.

[0056] S3. Judging whether the test tire has abnormalities:

[0057] Using the image comparison module to compare the standard broken line obtained in S1 with the test broken line obtained in S2. When there are differences between the test broken line and the standard broken line, it indicates that the test tire has abnormalities.

[0058] S4. When it is judged in S3 that the test tire is abnormal, judging the type of abnormality:

[0059] When the height of the test broken line is lower than the height of the standard broken line, it indicates that the test tire has wear;

[0060] When the height of the test broken line is higher than the height of the standard broken line, it indicates that the test tire has foreign objects.

[0061] S5. When the test tire has wear in S4, judging the degree of wear:

[0062] Judge the degree of wear according to the preset standard value and the preset safety value; wherein, the standard value is the lowest value that does not require tire maintenance, and the safety value is the lowest value that requires tire maintenance;

[0063] When the difference between the line height of the standard line graph and the line height of the test line graph is greater than the sum of the standard value and the safety value, it is judged as normal and no tire maintenance is required; when the difference between the line height of the standard line graph and the line height of the test line graph is greater than the safety value and less than the sum of the standard value and the safety value, it is judged as moderate wear and tire maintenance is required; when the difference between the line height of the standard line graph and the line height of the test line graph is less than the safety value, it is judged as severe wear and tire replacement is required.

[0064] S6. Status indication:

[0065] Use the indication module to indicate tire abnormalities; the indication module is preferably an indicator light that displays different colors or blinks at different frequencies in different tire states. The preferred indication method is: when the judgment result of the image comparison module is normal, the indicator light shows green; when the judgment result of the image comparison module is moderate wear, the indicator light shows yellow; when the judgment result of the image comparison module is severe wear, the indicator light shows red; when the image comparison module determines that there is a foreign object in the tire, the indicator light shows a red blink.

[0066] S7. Status display:

[0067] Use the display screen to display the abnormalities of the tread of the vehicle tire. Optionally, the display screen can display the continuous line graph generated by the image processing module, or can display the picture image or video image collected by the camera module, or can display the result information after comparison by the image comparison module.

[0068] When the display screen is set on the instrument panel in the vehicle cockpit, the driver can monitor the abnormalities of the vehicle tire in real time during driving. When the display screen is set outside, it is convenient for maintenance and inspection personnel to master the abnormalities of the vehicle tire when detecting the abnormalities of the vehicle tire outside the vehicle.

[0069] In summary, the embodiments of the present invention provide a system and method for detecting tire abnormalities using tire tread patterns. The system includes a laser emission module, a camera module, an image processing module, an image comparison module, and an indication module. The method makes the laser feature lines generated by the laser into continuous broken lines, and then compares the standard broken lines with the test broken lines to judge and monitor the abnormal conditions of the tire tread. The system and method provided by the present invention have the characteristics of simplicity and high efficiency. At the same time, the system and method provided by the present invention can be applied to real-time monitoring and early warning in the vehicle driving environment, and can also be applied to tire detection in a repair shop, expanding the scope of application.

[0070] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution of the present invention and the concept of the invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A system for detecting tire abnormalities using tire tread patterns, characterized in that, Including: A laser emission module for emitting laser to the tread of a tire to generate a laser characteristic line; A camera module for photographing the laser characteristic line on the tread; An image processing module connected to the output end of the camera module for making a continuous broken line graph of the photographed laser characteristic line; An image comparison module connected to the output end of the image processing module for comparing the continuous broken line graph with a pre-stored standard continuous broken line graph; The shooting frequency of the camera module is unit time * tire rotation speed / laser width; It further includes: An indication module connected to the output end of the image comparison module for indicating the tire state.

2. The system according to claim 1, wherein The laser emitted by the laser emission module is a linear laser.

3. The system according to claim 1, wherein The indication module is an indicator light.

4. A method for detecting tire abnormalities using the system according to any one of claims 1-3, characterized in that, Including the following steps: Setting of the standard continuous broken line graph: Using the laser emission module to perform laser scanning on a standard tire, using the camera module to photograph and record the standard characteristic line, and using the image processing module to connect the standard characteristic lines in sequence into a standard broken line to generate a standard continuous broken line graph; Generation of the test statistical graph: Using the laser emission module to perform laser scanning on a test tire, using the camera module to photograph and record the test characteristic line, and using the image processing module to connect the test characteristic lines in sequence into a test broken line; Judging whether there is an abnormality in the test tire: Using the image comparison module to compare the obtained standard broken line and the test broken line. When there is a difference between the test broken line and the standard broken line, it indicates that there is an abnormality in the test tire; When it is judged that the test tire is abnormal, judging the type of abnormality: When the height of the test broken line is lower than the height of the standard broken line, it indicates that the test tire has wear; When the test tire has wear, judging the degree of wear: Judging the degree of wear according to a preset standard value and a safety value.

5. The method according to claim 4, wherein When the height of the test broken line is higher than the height of the standard broken line, it indicates that there is a foreign object on the test tire.

6. The method according to claim 4, wherein 7. The method according to claim 4, wherein The specific method for judging the degree of wear is: When the difference between the height of the standard broken line of the standard continuous broken line graph and the height of the test broken line of the test broken line graph is greater than the sum of the preset standard value and the preset safety value, it is judged as mild wear; When the difference between the height of the broken line of the standard continuous broken line graph and the height of the test broken line of the test broken line graph is greater than the preset safety value and less than the sum of the preset standard value and the preset safety value, it is judged as moderate wear; When the difference between the height of the broken line of the standard continuous broken line graph and the height of the test broken line of the test broken line graph is less than the preset safety value, it is judged as severe wear. The method further includes: Using the indication module to indicate the tire abnormality.

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