Laser power dynamic control method and device based on tread detection and medium

Abstract

The invention discloses a laser power dynamic control method and device based on tread detection and a medium, and the method comprises the steps: generating a corresponding pulse width modulation signal according to initial power configuration information if a detection instruction is received, and transmitting the pulse width modulation signal to a laser; correcting the two-dimensional fringe image detected by the detector according to a preset image correction rule to obtain a corresponding corrected image; extracting a corresponding tread size parameter from the corrected image according to a preset size extraction strategy; obtaining a target detection gear corresponding to the tread size parameter according to a gear adjustment strategy; and correspondingly adjusting the duty ratio of the pulse width modulation signal according to the target detection gear so as to control the working power of the laser to correspond to the target detection gear. According to the method, the target detection gear can be obtained, and the working power of the laser is dynamically adjusted to be matched with the current tire position size parameter by adjusting the duty ratio of the pulse width modulation signal, so that the flexibility of detecting tires with different tire tread depths is improved.

Description

Technical Field

[0001] The present invention relates to the field of intelligent control technology, and in particular to a laser power dynamic control method, device and medium based on tire tread detection. Background Art

[0002] Tread tread detection has a wide range of applications in many fields, mainly including automobile safety and maintenance, smart tire technology, manufacturing and quality control, public transportation and commercial vehicles, etc. However, the requirements for laser power in tread tread detection vary depending on the specific application scenario and technical solution. Traditional tread tread detection has no special requirements for the emission power of the laser during the application process, and generally a fixed power output is sufficient; however, since the depth of the tire surface pattern changes with the length of tire use, tires with deeper patterns may require a larger laser emission power to provide better penetration and resolution, thereby obtaining more accurate measurement results; and for tires with shallower patterns, excessive laser emission power may cause damage to the tire surface. Therefore, dynamic control of laser power is particularly important in tread tread detection, which can not only ensure the accuracy and reliability of tread tread detection, but also reduce the working energy consumption of tread tread detection equipment. However, in the existing technical methods, the laser is only set to a fixed power to work, and it is impossible to dynamically adjust the emission power of the laser to match the emission power of the laser with the tread depth. Summary of the invention

[0003] The embodiments of the present invention provide a method, device and medium for dynamically controlling laser power based on tire tread detection, aiming to solve the problem in the prior art that the emission power of the laser cannot be dynamically adjusted.

[0004] In a first aspect, an embodiment of the present invention provides a method for dynamically controlling laser power based on tire tread detection, the method being applied to a control terminal, the control terminal being communicatively connected with a laser and a detector, the method comprising: If a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working; Correcting the two-dimensional fringe image detected by the detector according to a preset image correction rule to obtain a corresponding corrected image; Extracting corresponding tread size parameters from the correction image according to a preset size extraction strategy; Acquiring a target detection gear corresponding to the tire tread size parameter according to a gear adjustment strategy; The duty cycle of the pulse width modulation signal is adjusted according to the target detection gear position to control the working power of the laser to correspond to the target detection gear position.

[0005] In the second aspect, an embodiment of the present invention further provides a laser power dynamic control device based on tire tread detection, the control device comprising a control terminal and a laser, the control device applying the laser power dynamic control method based on tire tread detection as described in the first aspect above, a control circuit is provided between the control terminal and the laser; a control signal output terminal of the control terminal is connected to a control signal input terminal of the control circuit, and the laser is arranged in series between a power supply terminal and a control terminal of the control circuit.

[0006] In a third aspect, an embodiment of the present invention further provides a computer device, wherein the device includes a processor, a network interface, a memory, and a communication bus, wherein the processor, the network interface, and the memory communicate with each other via the communication bus; Memory, used to store computer programs; The processor is used to implement the steps of the laser power dynamic control method based on tire tread detection described in the first aspect when executing the program stored in the memory.

[0007] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the laser power dynamic control method based on tire tread detection as described in the first aspect above are implemented.

[0008] The embodiment of the present invention provides a method, device and medium for dynamic control of laser power based on tire tread detection, the method comprising: if a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working; according to the preset image correction rule, the two-dimensional stripe image detected by the detector is corrected to obtain the corresponding correction image; according to the preset size extraction strategy, the corresponding tire tread size parameter is extracted from the correction image; according to the gear adjustment strategy, the target detection gear corresponding to the tire tread size parameter is obtained; according to the target detection gear, the duty cycle of the pulse width modulation signal is adjusted to control the working power of the laser to correspond to the target detection gear. The above method can obtain the two-dimensional stripe image for correction to obtain the correction image and obtain the target detection gear correspondingly, and the duty cycle of the pulse width modulation signal is adjusted to dynamically adjust the working power of the laser to match the current tire position size parameter, which greatly improves the flexibility of detecting tires with different tire tread depths by laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0010] Figure 1 A method flow chart of a method for dynamic control of laser power based on tire tread detection provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a laser power dynamic control device based on tire tread detection provided by an embodiment of the present invention; Figure 3 A circuit structure diagram of a control circuit in a laser power dynamic control device based on tire tread detection provided by an embodiment of the present invention; Figure 4 is a schematic block diagram of a computer device provided by an embodiment of the present invention; Figure numerals: R1, first resistor; R2, second resistor; R3, third resistor; Q1, first MOS tube; 1, control terminal; 2, laser; 3, detector; 4, tire. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0013] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0014] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0015] See also Figure 1 As shown in the figure, the embodiment of the present invention provides a method for dynamic control of laser power based on tire tread detection, which is applied to the control terminal 1 and executed by the application software installed in the control terminal 1. Specific application scenarios are as follows Figure 2 As shown, the control terminal 1 is in communication connection with the laser 2 and the detector 3. The laser 2 is a device for emitting a line laser, and the detector 3 is a device for collecting a two-dimensional stripe image. The control terminal 1 is a terminal device with data processing and control signal transmission. The control terminal 1 can be an on-board control terminal configured in a vehicle, or other terminal devices equipped with an MCU processing chip. In a specific application process, the laser 2 emits a line laser, and the line laser illuminates the tread of the tire 4 to form a grating three-dimensional stripe image modulated by the tire pattern shape. The laser reflected light corresponding to the grating three-dimensional stripe image is detected by a detector set at another position, thereby obtaining a two-dimensional stripe image with grating stripes. As shown in FIG. Figure 1 As shown, the method includes steps S110 to S150.

[0016] S110: If a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working.

[0017] If a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working. The user can input the detection instruction to the control terminal, and the control terminal generates a pulse width modulation signal and outputs it to the laser. The laser starts working and emits a line laser according to the pulse width modulation signal. The power of the laser corresponds to the duty cycle of the pulse width modulation signal. The pulse width modulation signal is composed of a rectangular square wave with a fixed pulse frequency. The duty cycle of the pulse width modulation signal is the ratio of the time when the electrical signal is output to the entire signal cycle. By adjusting the duty cycle of the pulse width modulation signal, the working power of the laser can be adjusted accordingly. In the initial state, the initial power configuration information can be obtained and the corresponding pulse width modulation signal can be generated. The initial power configuration information includes the working power percentage in the initial state. If the working power percentage in the initial power configuration information is configured to be 40%, a pulse width modulation signal with a duty cycle of 40% can be generated and sent to the laser. Then, the laser outputs a line laser at 40% of the maximum power according to the received pulse width modulation signal.

[0018] S120, correcting the two-dimensional fringe image detected by the detector according to a preset image correction rule to obtain a corresponding corrected image.

[0019] The two-dimensional stripe image detected by the detector is corrected according to the preset image correction rules to obtain the corresponding corrected image. The detector detects the laser reflected light at a certain moment, and the detection information of a position on the tire tread can be obtained; when the tire rotates one circle, the laser reflected light of the entire tire tread can be collected by the detector, and the control terminal can obtain the detection information output by the detector and splice it into a corresponding two-dimensional stripe image. Furthermore, the lens of a single detector is distorted, and it needs to be corrected to eliminate the calculation error caused by the distortion. The control terminal can correct the obtained two-dimensional stripe image according to the image correction rules, so as to obtain a corrected image corresponding to the two-dimensional stripe image through correction.

[0020] In a specific embodiment, step S120 includes sub-steps: filtering the two-dimensional stripe image according to the pixel filtering parameters in the image correction rule to obtain a corresponding filtered image; correcting the filtered image according to the correction formula in the image correction rule to obtain a corresponding corrected image.

[0021] Specifically, the pixel filtering parameters in the image correction rules can be used to perform pixel filtering on the pixels contained in the two-dimensional stripe image. Since the emitted line laser is a laser beam of a specific wavelength, light other than the specific wavelength can affect the detection result, and the pixel filtering parameters can be used to perform pixel filtering. It can be determined whether the pixel values ​​of each pixel in the two-dimensional stripe image are all within the pixel value interval set by the pixel filtering parameters. If the pixel value is within the pixel value interval, the pixel is retained; if the pixel value is not within the pixel value interval, the average pixel value of other pixel points adjacent to the pixel is calculated, and the pixel value of the pixel is reset based on the calculated pixel average value, thereby eliminating the influence of abnormal pixels on the detection results.

[0022] Furthermore, the filtered image can be corrected by a correction formula. Since the irradiation distance corresponding to the middle of the tire tread is smaller when the line laser is irradiated, and the irradiation distance corresponding to the outer edge of the tire tread is longer, the filtered image can be corrected by a correction formula, which can be expressed by formula (1): (1); in, y is the lateral distance between the pixel point in the two-dimensional fringe image and the pixel point corresponding to the tire tread centerline, y’ is the lateral distance between the pixel point after correction and the pixel point corresponding to the centerline of the tire tread. L is the distance between the laser and the centerline of the tire tread. f is the initial pixel value of the pixel in the two-dimensional fringe image, f’ is the pixel value of the pixel after correction.

[0023] If the pixel point is a pixel point corresponding to the center line of the tire tread, there is no need to perform correction processing using the above correction formula. If the pixel point is not a pixel point corresponding to the center line of the tire tread, correction processing is required. After the pixel point is corrected, the corresponding corrected image can be obtained.

[0024] S130: extract corresponding tread size parameters from the corrected image according to a preset size extraction strategy.

[0025] The corresponding tread size parameters are extracted from the correction image according to a preset size extraction strategy. The size extraction strategy is used to extract corresponding parameter values ​​from the graphical correction image, and the extracted multiple parameter values ​​are combined into tread size parameters.

[0026] In a specific embodiment, step S130 includes sub-steps: obtaining a tire three-dimensional model corresponding to the corrected image according to the three-dimensional contour reconstruction rule in the size extraction strategy; and performing statistics on the model size in the tire three-dimensional model according to the parameter statistics item in the size extraction strategy to obtain the tread size parameters.

[0027] Specifically, the 3D model can be reconstructed according to the 3D contour reconstruction rule in the size extraction strategy, so as to obtain the 3D tire model corresponding to the corrected image; the brightness of the pixel point in the corrected image is the pattern depth corresponding to a certain point in the tire tread, and the depth value corresponding to the brightness value of each pixel point is obtained according to the correspondence between the brightness value of the pixel point and the pattern depth in the 3D contour reconstruction rule, and the 3D model is reconstructed based on the depth value of each pixel point, so as to obtain the 3D tire model corresponding to the tire tread pattern contour. Since the tire tread has a high reflection coefficient, the brightness value of the pixel point corresponding to the tire tread is significantly higher than the brightness value of the pixel point corresponding to the concave pattern of the tire tread, and the difference between the brightness values ​​can be used to accurately distinguish the tire tread and the concave pattern.

[0028] The tire three-dimensional model includes the model size corresponding to each point. The model size of each point in the tire three-dimensional model can be counted according to the size statistics item; each size statistics item can obtain a corresponding parameter value, and the obtained parameter values ​​corresponding to the size statistics item are combined into the tread size parameters. Among them, the size statistics items include the maximum depth of the tread pattern, the minimum depth of the tread pattern, the average depth of the tread pattern, the average wear depth of the tread, etc.; the maximum depth of the tread pattern is also the maximum depth value in the concave pattern of the tire tread, and the minimum depth of the tread pattern is also the minimum depth value in the concave pattern of the tire tread; the average depth of the tread pattern is also the average value of the depth values ​​of each point in the concave pattern of the tire tread, and the average wear depth of the tread is also the average value of the depth values ​​of each point in the tire tread.

[0029] In a specific embodiment, after step S130, the method further includes the steps of: judging whether the tread tread size parameter is abnormal according to a preset tread tread abnormality judgment rule; and generating corresponding alarm prompt information if the tread tread size parameter is abnormal.

[0030] Whether the tread size parameter is abnormal can be judged by the tread abnormality judgment rule. Specifically, it can be judged whether the average wear depth of the tread in the tread size parameter is not less than the judgment threshold set in the tread abnormality judgment rule; if it is not less than the judgment threshold, it indicates that the tire wear has not exceeded the wear limit, and it is judged that there is no abnormality in the tread size parameter; if it is less than the judgment threshold, it indicates that the tire wear exceeds the wear limit, and it is judged that there is an abnormality in the tread size parameter. If it is judged that there is an abnormality in the tread size parameter, a corresponding alarm prompt information can be generated, such as prompting the user to replace the tire to ensure driving safety.

[0031] S140. Acquire a target detection gear corresponding to the tire tread size parameter according to a gear adjustment strategy.

[0032] The target detection gear corresponding to the tread size parameter is obtained according to the gear adjustment strategy. The corresponding target detection gear can be obtained according to the gear adjustment strategy. The gear adjustment strategy includes multiple detection gears, and a detection gear corresponding to the tread size parameter can be obtained as the corresponding target detection gear.

[0033] In a specific embodiment, step S140 includes sub-steps: obtaining a tread depth parameter value in the tread size parameter; and obtaining a detection gear corresponding to the tread depth parameter value in the gear adjustment strategy as a target detection gear.

[0034] Specifically, the difference between the average tread pattern depth and the average tread wear depth in the tread size parameter can be calculated as the tread depth parameter value. The gear adjustment strategy includes a range interval corresponding to multiple detection gears, and each target detection gear corresponds to a laser power coefficient; the detection gear corresponding to the range interval matching the tread depth parameter value is obtained as the corresponding target detection gear.

[0035] S150, adjusting the duty cycle of the pulse width modulation signal according to the target detection gear to control the working power of the laser to correspond to the target detection gear.

[0036] The duty cycle of the pulse width modulation signal is adjusted according to the target detection gear to control the working power of the laser to correspond to the target detection gear. Further, the duty cycle of the pulse width modulation signal is adjusted according to the laser power coefficient in the target detection gear; for example, if the laser power coefficient of the target detection gear is 0.7, the duty cycle of the pulse width modulation signal is adjusted to 70% accordingly, and the pulse width modulation signal is output to the laser to control the working power of the laser to correspond to the target detection gear.

[0037] The method, device and medium for dynamic control of laser power based on tire tread detection disclosed in the above embodiments include: if a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working; the two-dimensional stripe image detected by the detector is corrected according to the preset image correction rule to obtain the corresponding correction image; the corresponding tire tread size parameter is extracted from the correction image according to the preset size extraction strategy; the target detection gear corresponding to the tire tread size parameter is obtained according to the gear adjustment strategy; the duty cycle of the pulse width modulation signal is adjusted according to the target detection gear to control the working power of the laser to correspond to the target detection gear. The above method can obtain the two-dimensional stripe image for correction to obtain the correction image and obtain the target detection gear accordingly, and dynamically adjust the working power of the laser to match the current tire position size parameter by adjusting the duty cycle of the pulse width modulation signal, which greatly improves the flexibility of detecting tires with different tire tread depths by laser.

[0038] The embodiment of the present invention further provides a laser power dynamic control device based on tire tread detection, the control device comprises a control terminal 1 and a laser 2, and the control terminal 1 applies any embodiment of the laser power dynamic control method based on tire tread detection. Figures 2 to 3 A control circuit is provided between the control terminal 1 and the laser 2; the control signal output end of the control terminal 1 is connected to the control signal input end of the control circuit, and the laser 2 is arranged in series between the power supply end and the control end of the control circuit.

[0039] In a more specific embodiment, the control circuit includes a first resistor R1, a second resistor R2 and a first MOS transistor Q1; one end of the first resistor R1 serves as a control signal input end of the control circuit, the other end of the first resistor R1 is connected to the gate of the first MOS transistor Q1, the source of the first MOS transistor Q1 is grounded, the drain of the first MOS transistor Q1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to one end of the laser 2 as a control end. The control circuit also includes a third resistor R3; one end of the third resistor R3 is connected to one end of the first resistor R1, and the other end of the third resistor R3 is grounded.

[0040] The control signal input terminal of the control circuit is Figure 3 The input / output pins (GPIO pins, General-purpose input / output) shown in the figure receive the pulse width modulation signal output by the control terminal, so as to control the time when the first MOS tube is turned on and off through the pulse width modulation signal. The proportion of the time when the first MOS tube is turned on is equal to the duty cycle of the pulse width modulation signal. The higher the proportion of the time when the first MOS tube is turned on, the higher the laser power emitted by the laser. In order to improve the reliability of the circuit application, a third resistor can be added, wherein the resistance of the third resistor is greater than the resistance of the first resistor. In the specific application process, the resistance of the first resistor can be set to 4.7KΩ, the resistance of the third resistor can be set to 47Ω, and the resistance of the second resistor can be set to 51Ω.

[0041] The laser power dynamic control device based on tire tread detection provided in the embodiment of the present invention applies the above-mentioned laser power dynamic control method based on tire tread detection. If a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working; the two-dimensional stripe image detected by the detector is corrected according to the preset image correction rule to obtain the corresponding correction image; the corresponding tire tread size parameter is extracted from the correction image according to the preset size extraction strategy; the target detection gear corresponding to the tire tread size parameter is obtained according to the gear adjustment strategy; the duty cycle of the pulse width modulation signal is adjusted according to the target detection gear to control the working power of the laser to correspond to the target detection gear. The above-mentioned method can obtain the two-dimensional stripe image for correction to obtain the correction image and obtain the target detection gear correspondingly, and dynamically adjust the working power of the laser to match the current tire position size parameter by adjusting the duty cycle of the pulse width modulation signal, which greatly improves the flexibility of detecting tires with different tire tread depths by laser.

[0042] The above-mentioned laser power dynamic control method based on tire tread detection can be implemented in the form of a computer program. The computer program can be used in Figure 4 If the computer device shown in FIG. 1 is used to run the control device, the control device can be implemented as follows: Figure 4 Computer equipment shown.

[0043] See also Figure 4 , Figure 4 is a schematic block diagram of a computer device provided by an embodiment of the present invention. The computer device may be a control device for executing a laser power dynamic control method based on tire tread detection to dynamically control the working power of a laser.

[0044] See also Figure 4The computer device 500 includes a processor 502 , a memory and a network interface 505 connected via a communication bus 501 , wherein the memory may include a storage medium 503 and an internal memory 504 .

[0045] The storage medium 503 can store an operating system 5031 and a computer program 5032. When the computer program 5032 is executed, the processor 502 can execute a laser power dynamic control method based on tire tread detection, wherein the storage medium 503 can be a volatile storage medium or a non-volatile storage medium.

[0046] The processor 502 is used to provide computing and control capabilities to support the operation of the entire computer device 500 .

[0047] The internal memory 504 provides an environment for the operation of the computer program 5032 in the storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute the laser power dynamic control method based on tire tread detection.

[0048] The network interface 505 is used for network communication, such as providing data information transmission, etc. Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation on the computer device 500 to which the solution of the present invention is applied. The specific computer device 500 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0049] The processor 502 is used to run a computer program 5032 stored in the memory to implement the corresponding functions in the above-mentioned laser power dynamic control method based on tire tread detection.

[0050] Those skilled in the art will understand that Figure 4 The embodiments of the computer device shown in the figure do not constitute a limitation on the specific composition of the computer device. In other embodiments, the computer device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. For example, in some embodiments, the computer device may only include a memory and a processor. In such embodiments, the structure and function of the memory and the processor are the same as those of the embodiment of the present invention. Figure 4 The embodiments shown are consistent and will not be described again here.

[0051] It should be understood that in the embodiment of the present invention, the processor 502 may be a central processing unit (CPU), and the processor 502 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0052] In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium may be a volatile or non-volatile computer-readable storage medium. The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps included in the above-mentioned laser power dynamic control method based on tire tread detection are implemented.

[0053] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the above-described equipment, devices and units can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. Those of ordinary skill in the art can appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0054] In the several embodiments provided by the present invention, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. Units with the same function may also be combined into one unit. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, or may be an electrical, mechanical or other form of connection.

[0055] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

[0056] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0057] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a computer-readable storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned computer-readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a magnetic disk or an optical disk.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A laser power dynamic control method based on tire tread detection, characterized in that: The method is applied to a control terminal, the control terminal is connected to a laser and a detector for communication, and the method includes: If a detection instruction is received, a corresponding pulse width modulation signal is generated according to the initial power configuration information and sent to the laser to control the laser to start working; Correcting the two-dimensional fringe image detected by the detector according to a preset image correction rule to obtain a corresponding corrected image; Extracting corresponding tread size parameters from the correction image according to a preset size extraction strategy; Acquiring a target detection gear corresponding to the tire tread size parameter according to a gear adjustment strategy; The duty cycle of the pulse width modulation signal is adjusted according to the target detection gear position to control the working power of the laser to correspond to the target detection gear position.

2. The laser power dynamic control method based on tire tread detection according to claim 1, characterized in that: The step of correcting the two-dimensional fringe image detected by the detector according to a preset image correction rule to obtain a corresponding corrected image includes: The pixel filtering parameters in the image correction rule are used to filter the two-dimensional fringe image to obtain a corresponding filtered image; The filtered image is corrected according to the correction formula in the image correction rule to obtain a corresponding corrected image.

3. The laser power dynamic control method based on tire tread detection according to claim 1 or 2, characterized in that: The step of extracting corresponding tread size parameters from the correction image according to a preset size extraction strategy includes: The three-dimensional contour reconstruction rule in the size extraction strategy obtains a three-dimensional tire model corresponding to the corrected image; The model size in the three-dimensional tire model is counted according to the parameter statistics item in the size extraction strategy to obtain the tread size parameter.

4. The laser power dynamic control method based on tire tread detection according to claim 3 is characterized in that: The step of acquiring the target detection gear corresponding to the tread size parameter according to the gear adjustment strategy includes: Obtaining a tread depth parameter value in the tread size parameter; A detection gear corresponding to the tread depth parameter value in the gear adjustment strategy is obtained as a target detection gear.

5. The laser power dynamic control method based on tire tread detection according to claim 3 is characterized in that: After extracting the corresponding tread size parameter from the correction image according to the preset size extraction strategy, the method further includes: Judging whether the tread tread size parameter is abnormal according to a preset tread tread abnormality judgment rule; If there is any abnormality in the tread size parameter, a corresponding alarm prompt message is generated.

6. A laser power dynamic control device based on tire tread detection, characterized in that: The control device includes a control terminal and a laser, and the control device applies the laser power dynamic control method based on tire tread detection according to any one of claims 1 to 5; A control circuit is provided between the control terminal and the laser; a control signal output terminal of the control terminal is connected to a control signal input terminal of the control circuit, and the laser is arranged in series between a power supply terminal and a control terminal of the control circuit.

7. The laser power dynamic control device based on tire tread detection according to claim 6, characterized in that: The control circuit includes a first resistor, a second resistor and a first MOS tube; One end of the first resistor serves as a control signal input end of the control circuit, the other end of the first resistor is connected to the gate of the first MOS tube, the source of the first MOS tube is grounded, the drain of the first MOS tube is connected to one end of the second resistor, and the other end of the second resistor is connected to one end of the laser as a control end.

8. The laser power dynamic control device based on tire tread detection according to claim 7, characterized in that: The control circuit also includes a third resistor; One end of the third resistor is connected to one end of the first resistor, and the other end of the third resistor is grounded.

9. A computer device, characterized in that: The device includes a processor, a network interface, a memory and a communication bus, wherein the processor, the network interface and the memory communicate with each other via the communication bus; Memory, used to store computer programs; The processor is used to implement the steps of the laser power dynamic control method based on tire tread detection according to any one of claims 1 to 5 when executing the program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for dynamic control of laser power based on tire tread detection according to any one of claims 1 to 5 are implemented.

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