Method, system, equipment and medium for evaluating microwave absorption performance of road markings

Abstract

The present invention provides a method, system, device and medium for evaluating the microwave absorption performance of road markings, and relates to the technical field of road markings. The method first prepares a ring-shaped road marking structure sample, then uses a vector network analyzer and a coaxial probe method to measure the relative complex permittivity and relative complex permeability of the ring-shaped road marking structure sample. Finally, the relative complex permittivity, relative complex permeability and reflection loss are used to perform a comprehensive evaluation of the microwave absorption performance of the ring-shaped road marking structure sample. The method can effectively improve the problems of fuzzy analysis methods for microwave absorption performance of road markings and difficulty in measuring absorption efficiency, and significantly improve the accuracy and objectivity of evaluating the microwave absorption performance of easily removable road markings.

Description

Technical Field

[0001] The present invention relates to the technical field of road markings, and in particular to a method, system, equipment and medium for evaluating microwave absorption performance of road markings. Background Art

[0002] As infrastructure construction accelerates, traffic management plans change more frequently, often requiring the removal of existing road markings. Currently, it is being proposed to add electrically and magnetically lossy microwave absorbers to traditional road marking structures to enhance microwave absorption, thereby making them easier to remove.

[0003] However, existing technologies have difficulty accurately quantifying or intuitively describing the microwave absorption performance of easy-to-remove road markings. Furthermore, because the road marking materials themselves have complex microstructural characteristics and mechanical behavior, and are easily affected by external environmental factors during testing, current methods for evaluating the microwave absorption performance of easy-to-remove road markings are difficult to objectively and accurately evaluate, and it is difficult to measure the absorption efficiency. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, system, equipment and medium for evaluating the microwave absorption performance of road markings. This method measures the relative complex permittivity, relative complex permeability and reflection loss of a ring-shaped road marking structure sample, and performs a comprehensive evaluation of the microwave absorption performance of the ring-shaped road marking structure sample based on the above electromagnetic parameters. This method can effectively improve the problems of ambiguous analysis methods for microwave absorption performance of road markings and difficulty in measuring absorption efficiency, and significantly improve the accuracy and objectivity of evaluating the microwave absorption performance of easy-to-remove road markings.

[0005] In a first aspect, an embodiment of the present invention provides a method for evaluating microwave absorption performance of road markings, the method comprising the following steps:

[0006] Obtain a ring-shaped marking structure sample with a smooth marking surface;

[0007] The surface of the ring-shaped marking structure sample was scanned and measured using a vector network analyzer to obtain the relative complex permittivity and relative complex permeability.

[0008] Determine the input impedance of the ring-shaped marking structure sample according to the relative complex permittivity and relative complex permeability;

[0009] Determine the reflection loss of the ring reticle structure sample based on the input impedance;

[0010] The microwave absorption performance of the ring-shaped marking structure sample was evaluated using relative complex permittivity, relative complex permeability and reflection loss.

[0011] In some embodiments, the step of obtaining a ring-shaped reticle structure sample having a smooth reticle surface includes:

[0012] By preparing the marking structure or coring the road surface, a core sample with the marking structure is obtained;

[0013] Grind the marking surface of the core sample to meet the preset smoothness;

[0014] The polished core sample is made into a ring marking structure sample according to the preset size.

[0015] In some embodiments, the step of scanning and measuring the surface of the ring-shaped grating structure sample using a vector network analyzer to obtain the relative complex permittivity and the relative complex permeability includes:

[0016] A vector network analyzer and a coaxial probe method are used to measure the dielectric constant and electromagnetic parameters of the surface of the ring-shaped marking structure sample, and the relative complex dielectric constant and relative complex permeability are obtained.

[0017] In some embodiments, the step of determining the input impedance of the ring-shaped reticle structure sample according to the relative complex permittivity and the relative complex permeability includes:

[0018] The input impedance of the ring-shaped marking structure sample is determined according to a preset first formula and relative complex permittivity and relative complex permeability; wherein the first formula includes:

[0019] Z in =Z0(u r / ε r ) 1 / 2 tanh[j(2πfd / c)(u r ε r ) 1 / 2 ]

[0020] Among them, Z in represents the input impedance of the ring-shaped marking structure sample, Z0 represents the free space impedance, u r represents the relative complex permeability, ε r represents the relative complex permittivity, f represents the frequency of the electromagnetic wave, d represents the thickness of the ring-shaped marking structure sample, c represents the propagation speed of the electromagnetic wave in free space, tanh[] represents the activation function, and j represents the imaginary unit.

[0021] In some embodiments, the step of determining the reflection loss of the ring reticle structure sample based on the input impedance includes:

[0022] The reflection loss of the ring-shaped marking structure sample is determined according to a preset second formula, input impedance, and free space impedance; wherein the second formula includes:

[0023] RL(dB)=20log|(Z in -Z0) / (Zin +Z0)|

[0024] Where RL (dB) represents the reflection loss of the ring-shaped marking structure sample, Z in represents the input impedance, and Z0 represents the free space impedance.

[0025] In some embodiments, the step of evaluating the microwave absorption performance of the ring-shaped marking structure sample using relative complex permittivity, relative complex permeability, and reflection loss includes:

[0026] The electric energy storage capacity and magnetic energy storage capacity of the ring-shaped marking structure sample are evaluated using the real part of the relative complex permittivity and the real part of the relative complex permeability.

[0027] The imaginary part of the relative complex permittivity and the imaginary part of the relative complex permeability are used to evaluate the electric energy loss capacity and magnetic energy loss capacity of the ring-shaped marking structure sample respectively.

[0028] Reflection loss is used to evaluate the reflection loss capability of the ring marking structure sample.

[0029] In some embodiments, the method further comprises:

[0030] The relationship between the power loss and storage corresponding to the ring-shaped marking structure sample is evaluated using the dielectric loss tangent between the real and imaginary parts of the relative complex permittivity.

[0031] The relationship between the magnetic energy loss and storage corresponding to the ring-shaped marking structure sample is evaluated using the magnetic loss tangent between the real and imaginary parts of the relative complex permeability.

[0032] In a second aspect, an embodiment of the present invention provides a road marking microwave absorption performance evaluation system, the system comprising the following modules:

[0033] Sample acquisition module: used to obtain ring-shaped marking structure samples with smooth marking surface;

[0034] Sample measurement module: used to scan and measure the surface of the ring-shaped marking structure sample using a vector network analyzer to obtain the relative complex permittivity and relative complex permeability;

[0035] Input impedance determination module: used to determine the input impedance of the ring marking structure sample according to the relative complex permittivity and relative complex permeability;

[0036] Reflection loss determination module: used to determine the reflection loss of the ring-shaped marking structure sample based on the input impedance;

[0037] Performance evaluation module: used to evaluate the microwave absorption performance of the ring-shaped marking structure sample using relative complex permittivity, relative complex permeability and reflection loss.

[0038] In a third aspect, an embodiment of the invention further provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, wherein when the processor executes the computer program, the steps of the method for evaluating the microwave absorption performance of road markings mentioned in the first aspect are implemented.

[0039] In a fourth aspect, an embodiment of the present invention further provides a readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the method for evaluating microwave absorption performance of road markings mentioned in the first aspect are implemented.

[0040] The embodiments of the present invention bring at least the following beneficial effects:

[0041] The present invention provides a method, system, device, and medium for evaluating the microwave absorption performance of road markings. The method first obtains a smooth ring-shaped marking structure sample. Next, a vector network analyzer is used to scan and measure the surface of the ring-shaped marking structure sample to obtain the relative complex permittivity and relative complex permeability. The input impedance of the ring-shaped marking structure sample is then determined based on the relative complex permittivity and relative complex permeability. The reflection loss of the ring-shaped marking structure sample is then determined based on the input impedance. Finally, the microwave absorption performance of the ring-shaped marking structure sample is evaluated using the relative complex permittivity, relative complex permeability, and reflection loss. This method uses the relative complex permittivity, relative complex permeability, and reflection loss to evaluate the microwave absorption performance of the ring-shaped marking structure sample in multiple aspects, such as its electrical energy loss capacity, magnetic energy loss capacity, and reflection loss capacity. This method effectively addresses the issues of ambiguous road marking microwave absorption performance analysis methods and the difficulty in measuring absorption efficiency, significantly improving the accuracy and objectivity of microwave absorption performance evaluation for easily removable road markings.

[0042] Other features and advantages of the present invention will be described in the following description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology of the present invention.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically listed below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 A flowchart of a method for evaluating microwave absorption performance of road markings provided in an embodiment of the present invention;

[0046] Figure 2 A flow chart of a method for evaluating microwave absorption performance provided by an embodiment of the present invention;

[0047] Figure 3 A flowchart of another method for evaluating microwave absorption performance of road markings provided by an embodiment of the present invention;

[0048] Figure 4 A schematic diagram of the structure of a road marking microwave absorption performance evaluation system provided by an embodiment of the present invention;

[0049] Figure 5 A schematic structural diagram of an electronic device provided by an embodiment of the present invention.

[0050] icon:

[0051] 410 - sample acquisition module; 420 - sample measurement module; 430 - input impedance determination module; 440 - return loss determination module; 450 - performance evaluation module;

[0052] 101 - processor; 102 - memory; 103 - bus; 104 - communication interface. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] Some road marking removal methods propose adding electrically and magnetically lossy microwave absorbers to traditional road marking structures to enhance microwave absorption, thereby making them easier to remove. However, existing technologies struggle to accurately quantify or intuitively describe the microwave absorption performance of easily removable road markings. Furthermore, due to the complex microstructure and mechanical behavior of road marking materials, coupled with their susceptibility to environmental influences during testing, current methods for evaluating the microwave absorption performance of easily removable road markings struggle to objectively and accurately assess their efficiency.

[0055] At the same time, current research on easy-to-remove road marking materials, both domestically and internationally, primarily focuses on the development of different types of absorbing materials and the exploration of combined structures for easy-to-remove road markings. Methods for evaluating microwave absorption performance are also limited to the materials science field and have not been extended to road engineering applications. Consequently, the current road industry lacks effective methods for evaluating the microwave absorption performance of easy-to-remove road marking materials, making it difficult to accurately measure the microwave absorption capacity of different types of easy-to-remove road markings. This, in turn, hinders effective guidance for non-destructive road marking removal in real-world applications.

[0056] Based on this, in order to effectively improve the problems of vague analysis methods for microwave absorption performance of road markings, difficulty in measuring absorption efficiency, and inability to accurately determine parameters of easy-to-remove equipment for road markings in physical projects, the embodiments of the present invention provide a method, system, device, and medium for evaluating microwave absorption performance of road markings. This method measures the relative complex permittivity, relative complex permeability, and reflection loss of a ring-shaped marking structure sample, and performs a comprehensive evaluation of the microwave absorption performance of the ring-shaped marking structure sample based on the above electromagnetic parameters. This method can effectively improve the problems of vague analysis methods for microwave absorption performance of road markings and difficulty in measuring absorption efficiency, and significantly improve the accuracy and objectivity of evaluating the microwave absorption performance of easy-to-remove markings.

[0057] To facilitate understanding of this embodiment, a method for evaluating microwave absorption performance of road markings disclosed in an embodiment of the present invention is first introduced in detail. The method is applied to clear road markings in highway and urban road pavement engineering. Figure 1 As shown, the following steps are included:

[0058] Step S101: obtaining a ring-shaped marking structure sample with a smooth marking surface.

[0059] The process of obtaining the ring marking structure sample in this embodiment may include:

[0060] A core sample with a marking structure is obtained by preparing a marking structure or coring a road surface; the marking surface of the core sample is polished to a predetermined smoothness. In practice, a marking structure prepared in a laboratory using a wheel rutting plate or a core sample with a marking structure obtained by coring an actual road surface can be used. The marking surface is polished flat using a grinder until the marking surface meets the predetermined smoothness and is sufficiently smooth.

[0061] The polished core sample is then formed into a ring-shaped marking structure sample according to preset dimensions. In one example, the polished core sample can be formed into a ring-shaped sample with an inner diameter of 3 mm and an outer diameter of 7 mm to obtain a ring-shaped marking structure sample. To meet actual testing requirements, this embodiment can produce ring-shaped marking structure samples of any size; the above dimensions are only examples.

[0062] Step S102: Scan and measure the surface of the ring-shaped marking structure sample using a vector network analyzer to obtain a relative complex permittivity and a relative complex permeability.

[0063] In this embodiment, a vector network analyzer can be used, and a coaxial probe method can be selected to measure the dielectric constant and electromagnetic parameters of the surface of the ring-shaped marking structure sample to obtain the relative complex dielectric constant and relative complex permeability.

[0064] The ring-shaped marking structure sample was measured by a vector network analyzer to obtain the electromagnetic parameters in the frequency range of 2-18 GHz, including the relative complex dielectric constant ε r =ε′-jε″ and relative complex permeability u r =u′-ju″.

[0065] The coaxial probe method is used in the measurement process. It has the advantages of being able to update the calibration in real time using ECal, being easy to use, requiring little sample processing, being non-destructive, and having a wide frequency. It is suitable for measuring and collecting the dielectric constant and electromagnetic parameters of the surface of solid materials.

[0066] Step S103: determining the input impedance of the ring-shaped marking structure sample according to the relative complex permittivity and the relative complex permeability.

[0067] In one embodiment, the input impedance of the ring-shaped marking structure sample can be determined according to a preset first formula and relative complex permittivity and relative complex permeability; wherein the first formula can be referred to as shown in the following (1):

[0068] Z in =Z0(u r / ε r ) 1 / 2 tanh[j(2πfd / c)(u r ε r ) 1 / 2 ] (1)

[0069] Among them, Z in represents the input impedance of the ring-shaped marking structure sample, Z0 represents the free space impedance, u r represents the relative complex permeability, ε r represents the relative complex permittivity, f represents the frequency of the electromagnetic wave, d represents the thickness of the ring-shaped marking structure sample, c represents the propagation speed of the electromagnetic wave in free space, tanh[] represents the activation function, and j represents the imaginary unit.

[0070] Step S104: determining the reflection loss of the ring-shaped marking structure sample based on the input impedance;

[0071] In one embodiment, the reflection loss of the ring-shaped marking structure sample can be determined according to a preset second formula and the input impedance and free space impedance; wherein the second formula can be referred to as shown in the following (2):

[0072] RL(dB)=20log|(Z in -Z0) / (Z in +Z0)| (2)

[0073] Where RL (dB) represents the reflection loss of the ring-shaped marking structure sample, Z in represents the input impedance, and Z0 represents the free space impedance.

[0074] Step S105: Evaluate the microwave absorption performance of the ring-shaped marking structure sample using the relative complex permittivity, relative complex permeability, and reflection loss.

[0075] The electromagnetic absorption properties and mechanisms of absorbing materials are primarily determined by their relative complex permittivity and relative complex permeability. Therefore, the real part of the relative complex permittivity, ε', and the real part of the relative complex permeability, u', correspond to the electrical and magnetic energy storage capacities, respectively. The imaginary part of the relative complex permittivity, ε", and the imaginary part of the relative complex permeability, u", correspond to the electrical and magnetic energy dissipation capacities, respectively.

[0076] Based on the above situation, this embodiment can use relative complex permittivity, relative complex permeability and reflection loss to evaluate the microwave absorption performance of the ring-shaped marking structure sample. The specific evaluation method can be referred to Figure 2 The following content is shown.

[0077] Step S201 : using the real part of the relative complex permittivity and the real part of the relative complex permeability, respectively evaluate the electric energy storage capacity and the magnetic energy storage capacity of the ring-shaped marking structure sample.

[0078] In step S202 , the imaginary part of the relative complex permittivity and the imaginary part of the relative complex permeability are used to evaluate the electric energy loss capability and the magnetic energy loss capability of the ring-shaped marking structure sample.

[0079] This embodiment characterizes the electric energy loss capacity and magnetic energy loss capacity of the ring-shaped marking structure sample by calculating the imaginary part of the relative complex permittivity and the imaginary part of the relative complex permeability, thereby measuring and comparing the microwave absorption performance of the ring-shaped marking structure samples corresponding to different marking materials.

[0080] On this basis, this embodiment can also use the power loss capacity and magnetic energy loss capacity to further determine the unit clearing time of the easy-to-clear marking structure in the ring marking structure sample, thereby obtaining its hourly clearing efficiency, which can better guide the promotion and application of easy-to-clear markings in physical projects.

[0081] Step S203: evaluating the reflection loss capability of the ring-shaped marking structure sample using the reflection loss.

[0082] In some embodiments, the method of evaluating the microwave absorption performance may further include:

[0083] In step S204, the relationship between the power loss and storage corresponding to the ring-shaped marking structure sample is evaluated using the dielectric loss tangent between the real and imaginary parts of the relative complex dielectric constant. The dielectric loss tangent can be expressed as the following formula (3):

[0084] tanδ ε =ε″ / ε′ (3).

[0085] In step S205, the relationship between the magnetic energy loss and storage corresponding to the ring-shaped marking structure sample is evaluated using the magnetic loss tangent between the real and imaginary parts of the relative complex permeability. The magnetic loss tangent can be expressed as the following formula (4):

[0086] tanδ M =u″ / u′ (4).

[0087] In the above embodiments, the relative complex permittivity, relative complex permeability, and reflection loss used to evaluate microwave absorption performance are all accurate quantitative results or intuitive formula descriptions, thereby enabling accurate and objective evaluation of the microwave absorption performance of the easy-to-remove marking.

[0088] According to the above embodiments, a Figure 3 The method for evaluating microwave absorption performance of road markings shown in the figure comprises the following steps:

[0089] Step S301: obtaining a core sample with a road marking structure by preparing a road marking structure or coring a road surface.

[0090] Step S302: polishing the marking surface of the core sample to meet a preset smoothness.

[0091] Step S303 , manufacturing the polished core sample into a ring-shaped marking structure sample according to a preset size.

[0092] Step S304: Use a vector network analyzer and a coaxial probe method to measure the dielectric constant and electromagnetic parameters of the surface of the ring-shaped marking structure sample to obtain the relative complex dielectric constant ε r =ε′-jε″ and relative complex permeability u r =u′-ju″.

[0093] Step S305 , using the real part ε′ of the relative complex permittivity and the real part u′ of the relative complex permeability, respectively evaluate the electric energy storage capacity and the magnetic energy storage capacity of the ring-shaped marking structure sample.

[0094] Step S306 , using the imaginary part ε″ of the relative complex permittivity and the imaginary part u″ of the relative complex magnetic permeability, respectively evaluate the electric energy loss capability and the magnetic energy loss capability of the ring-shaped marking structure sample.

[0095] Step S307 , using the dielectric loss tangent between the real part and the imaginary part of the relative complex permittivity, the relationship between the power loss and storage corresponding to the ring-shaped marking structure sample is evaluated.

[0096] Step S308 , using the magnetic loss tangent between the real part and the imaginary part of the relative complex permeability, the relationship between the magnetic energy loss and storage corresponding to the ring-shaped marking structure sample is evaluated.

[0097] Step S309 : determining the input impedance of the ring-shaped marking structure sample according to a preset first formula and the relative complex permittivity and relative complex permeability.

[0098] Step S310: determining the reflection loss of the ring-shaped marking structure sample according to a preset second formula, input impedance, and free space impedance.

[0099] Step S311 : evaluating the reflection loss capability of the ring-shaped marking structure sample using reflection loss.

[0100] In summary, the microwave absorption performance evaluation method for road markings described in the above embodiments first prepares a ring-shaped road marking structure sample. Then, using a vector network analyzer (VNA) and a coaxial probe method, the relative complex permittivity and relative complex permeability of the ring-shaped road marking sample are measured. Finally, the relative complex permittivity, relative complex permeability, and reflection loss are used to evaluate the microwave absorption performance of the ring-shaped road marking sample in various aspects, such as its electrical energy loss capacity, magnetic energy loss capacity, and reflection loss capacity. This technical solution can significantly improve the ambiguity of microwave absorption performance analysis methods for road markings and the difficulty in measuring absorption efficiency, significantly enhancing the accuracy and objectivity of microwave absorption performance evaluation for easily removable road markings.

[0101] Furthermore, in practical applications, the unit removal efficiency of different easy-to-remove road marking materials can be obtained, in order to guide the efficient and non-destructive removal of road markings in actual projects.

[0102] Corresponding to the above method embodiment, the embodiment of the present invention provides a road marking microwave absorption performance evaluation system, which can be applied to road marking removal scenarios, such as Figure 4 As shown, the system includes the following modules:

[0103] Sample acquisition module 410: used to obtain a ring-shaped marking structure sample with a smooth marking surface;

[0104] The sample measurement module 420 is configured to scan and measure the surface of the ring-shaped marking structure sample using a vector network analyzer to obtain a relative complex permittivity and a relative complex permeability;

[0105] Input impedance determination module 430: configured to determine the input impedance of the annular marking structure sample according to the relative complex permittivity and the relative complex permeability;

[0106] A reflection loss determining module 440 is configured to determine the reflection loss of the ring-shaped reticle structure sample based on the input impedance;

[0107] The performance evaluation module 450 is configured to evaluate the microwave absorption performance of the annular marking structure sample by using the relative complex permittivity, the relative complex permeability, and the reflection loss.

[0108] In some embodiments, the sample acquisition module 410 is used to: obtain a core sample with a marking structure by preparing a marking structure or coring a road surface; polish the marking surface of the core sample to meet a preset smoothness; and make the polished core sample into a ring-shaped marking structure sample according to a preset size.

[0109] In some embodiments, the sample measurement module 420 is configured to: use a vector network analyzer and a coaxial probe method to measure the dielectric constant and electromagnetic parameters of the surface of the annular marking structure sample to obtain relative complex dielectric constant and relative complex permeability.

[0110] In some embodiments, the input impedance determination module 430 is configured to determine the input impedance of the annular graticule structure sample according to a preset first formula and the relative complex permittivity and the relative complex permeability; wherein the first formula includes:

[0111] Z in =Z0(u r / ε r ) 1 / 2 tanh[j(2πfd / c)(u r ε r ) 1 / 2 ]

[0112] Among them, Z in represents the input impedance of the ring-shaped marking structure sample, Z0 represents the free space impedance, u r represents the relative complex permeability, ε r represents the relative complex permittivity, f represents the frequency of the electromagnetic wave, d represents the thickness of the ring-shaped marking structure sample, c represents the propagation speed of the electromagnetic wave in free space, tanh[] represents the activation function, and j represents the imaginary unit.

[0113] In some embodiments, the reflection loss determination module 440 is configured to determine the reflection loss of the ring reticle structure sample according to a preset second formula and the input impedance and the free space impedance; wherein the second formula includes:

[0114] RL(dB)=20log|(Z in -Z0) / (Z in +Z0)|

[0115] Where RL (dB) represents the reflection loss of the ring-shaped marking structure sample, Z in represents the input impedance, and Z0 represents the free space impedance.

[0116] In some embodiments, the performance evaluation module 450 is used to: use the real part of the relative complex permittivity and the real part of the relative complex permeability to respectively evaluate the electric energy storage capacity and the magnetic energy storage capacity of the annular marking structure sample; use the imaginary part of the relative complex permittivity and the imaginary part of the relative complex permeability to respectively evaluate the electric energy loss capacity and the magnetic energy loss capacity of the annular marking structure sample; and use the reflection loss to evaluate the reflection loss capacity of the annular marking structure sample.

[0117] In some embodiments, the system further includes: utilizing the dielectric loss tangent between the real part and the imaginary part of the relative complex permittivity to evaluate the relationship between the electric energy loss and storage corresponding to the annular marking structure sample; utilizing the magnetic loss tangent between the real part and the imaginary part of the relative complex magnetic permeability to evaluate the relationship between the magnetic energy loss and storage corresponding to the annular marking structure sample.

[0118] The microwave absorption performance evaluation system for road markings described in the aforementioned embodiments first prepares a ring-shaped road marking structure sample. Then, using a vector network analyzer (VNA) and a coaxial probe method, it measures the relative complex permittivity and relative complex permeability of the ring-shaped road marking structure sample. Finally, using these relative complex permittivity, relative complex permeability, and reflection loss, it evaluates the microwave absorption performance of the ring-shaped road marking structure sample in various aspects, such as its electrical energy loss capacity, magnetic energy loss capacity, and reflection loss capacity. This technical solution significantly improves the ambiguity of microwave absorption performance analysis methods for road markings and the difficulty in measuring absorption efficiency, significantly enhancing the accuracy and objectivity of microwave absorption performance evaluation for easily removable road markings.

[0119] The road marking microwave absorption performance evaluation system provided in this embodiment shares the same technical features as the road marking microwave absorption performance evaluation method provided in the aforementioned embodiment, thus solving the same technical problems and achieving the same technical effects. For the sake of brevity, any details not mentioned in the embodiment section are referenced to the corresponding content in the aforementioned road marking microwave absorption performance evaluation method embodiment.

[0120] This embodiment also provides an electronic device. The structural diagram of the electronic device is as follows: Figure 5 As shown, the device includes a processor 101 and a memory 102; wherein the memory 102 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the above-mentioned road marking microwave absorption performance evaluation method.

[0121] Figure 5 The electronic device shown further includes a bus 103 and a communication interface 104 , and the processor 101 , the communication interface 104 and the memory 102 are connected via the bus 103 .

[0122] The memory 102 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The bus 103 may be an ISA bus, a PCI bus, or an EISA bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0123] The communication interface 104 is used to connect to at least one user terminal and other network units through a network interface, and send the encapsulated IPv4 message or IPv4 message to the user terminal through the network interface.

[0124] The processor 101 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 101 or by instructions in the form of software. The above-mentioned processor 101 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present disclosure can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present disclosure can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in memory 102, and processor 101 reads information in memory 102 and, in conjunction with its hardware, completes the steps of the method of the aforementioned embodiment.

[0125] An embodiment of the present invention further provides a readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for evaluating microwave absorption performance of road markings in the aforementioned embodiment are executed.

[0126] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0128] 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.

[0129] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned 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), a random access memory (RAM), a magnetic disk, or an optical disk.

[0130] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A method for evaluating microwave absorption performance of road markings, characterized in that: The method comprises the following steps: Obtain a ring-shaped marking structure sample with a smooth marking surface; A vector network analyzer is used to scan and measure the surface of the ring-shaped marking structure sample to obtain a relative complex permittivity and a relative complex permeability; determining an input impedance of the annular marking structure sample according to the relative complex permittivity and the relative complex permeability; determining a reflection loss of the ring-shaped reticle structure sample based on the input impedance; evaluating the microwave absorption performance of the annular marking structure sample using the relative complex permittivity, the relative complex magnetic permeability, and the reflection loss; The step of determining the input impedance of the annular marking structure sample according to the relative complex permittivity and the relative complex permeability includes: The input impedance of the annular marking structure sample is determined according to a preset first formula and the relative complex permittivity and the relative complex permeability; wherein the first formula includes: in, represents the input impedance of the ring-shaped reticle structure sample, represents the free space impedance, represents the relative complex permeability, represents the relative complex permittivity, represents the frequency of electromagnetic waves, represents the thickness of the annular marking structure sample, represents the propagation speed of electromagnetic waves in free space, represents the activation function, represents an imaginary unit; The step of determining the reflection loss of the ring-shaped reticle structure sample based on the input impedance includes: The reflection loss of the ring-shaped reticle structure sample is determined according to a preset second formula and the input impedance and the free space impedance; wherein the second formula includes: in, represents the reflection loss of the ring-shaped reticle structure sample, represents the input impedance, represents the free space impedance; The step of evaluating the microwave absorption performance of the annular marking structure sample using the relative complex permittivity, the relative complex magnetic permeability, and the reflection loss includes: Using the real part of the relative complex permittivity and the real part of the relative complex permeability, respectively evaluate the electrical energy storage capacity and the magnetic energy storage capacity of the ring-shaped marking structure sample; Using the imaginary part of the relative complex permittivity and the imaginary part of the relative complex permeability, respectively evaluating the electric energy loss capability and the magnetic energy loss capability of the ring-shaped marking structure sample; The reflection loss is used to evaluate the reflection loss capability of the annular reticle structure sample.

2. The method for evaluating microwave absorption performance of road markings according to claim 1, wherein: The step of obtaining a ring-shaped marking structure sample with a smooth marking surface includes: By preparing the marking structure or coring the road surface, a core sample with the marking structure is obtained; Grinding the marking surface of the core sample to a preset smoothness; The polished core sample is made into a ring marking structure sample according to the preset size.

3. The method for evaluating microwave absorption performance of road markings according to claim 1, wherein: The step of scanning and measuring the surface of the annular marking structure sample using a vector network analyzer to obtain the relative complex permittivity and the relative complex permeability includes: A vector network analyzer is used and a coaxial probe method is selected to measure the dielectric constant and electromagnetic parameters of the surface of the annular marking structure sample to obtain the relative complex dielectric constant and the relative complex permeability.

4. The method for evaluating microwave absorption performance of road markings according to claim 1, wherein: The method further comprises: Using the dielectric loss tangent between the real part and the imaginary part of the relative complex dielectric constant, the relationship between the power loss and storage corresponding to the ring-shaped marking structure sample is evaluated; The relationship between the magnetic energy loss and storage corresponding to the annular marking structure sample is evaluated using the magnetic loss tangent between the real part and the imaginary part of the relative complex magnetic permeability.

5. A road marking microwave absorption performance evaluation system, characterized in that: The system includes the following modules: Sample acquisition module: used to obtain ring-shaped marking structure samples with smooth marking surface; Sample measurement module: used to scan and measure the surface of the ring-shaped marking structure sample using a vector network analyzer to obtain relative complex permittivity and relative complex permeability; An input impedance determination module is configured to determine the input impedance of the annular marking structure sample according to the relative complex permittivity and the relative complex permeability; A reflection loss determining module is configured to determine the reflection loss of the ring-shaped marking structure sample based on the input impedance; A performance evaluation module is configured to evaluate the microwave absorption performance of the annular marking structure sample using the relative complex permittivity, the relative complex permeability, and the reflection loss; The input impedance determination module is further configured to determine the input impedance of the annular marking structure sample according to a preset first formula and the relative complex permittivity and the relative complex permeability; wherein the first formula includes: in, represents the input impedance of the ring-shaped reticle structure sample, represents the free space impedance, represents the relative complex permeability, represents the relative complex permittivity, represents the frequency of electromagnetic waves, represents the thickness of the annular marking structure sample, represents the propagation speed of electromagnetic waves in free space, represents the activation function, represents an imaginary unit; The reflection loss determination module is further configured to determine the reflection loss of the annular reticle structure sample according to a preset second formula and the input impedance and free space impedance; wherein the second formula includes: in, represents the reflection loss of the ring-shaped reticle structure sample, represents the input impedance, represents the free space impedance; The performance evaluation module is further used to: use the real part of the relative complex permittivity and the real part of the relative complex permeability to respectively evaluate the electric energy storage capacity and the magnetic energy storage capacity of the annular marking structure sample; use the imaginary part of the relative complex permittivity and the imaginary part of the relative complex permeability to respectively evaluate the electric energy loss capacity and the magnetic energy loss capacity of the annular marking structure sample; and use the reflection loss to evaluate the reflection loss capacity of the annular marking structure sample.

6. An electronic device, characterized in that: include: A processor and a storage device; the storage device stores a computer program, which, when executed by the processor, implements the steps of the method for evaluating the microwave absorption performance of road markings according to any one of claims 1 to 4.

7. A readable storage medium, characterized in that: The readable storage medium stores a computer program, which, when executed by a processor, executes the steps of the method for evaluating microwave absorption performance of road markings according to any one of claims 1 to 4.

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