Material state determination method and device, storage medium and electronic device

Abstract

The invention discloses a material state determination method and device, a storage medium and an electronic device, and the method comprises the steps: obtaining a first outer side strain and a first inner side strain of a first section of a suction surface beam cap, and a second outer side strain and a second inner side strain of a second section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of the wind power blade; determining a first material state of the first section according to the first outer side strain and the first inner side strain, and determining a second material state of the second section according to the second outer side strain and the second inner side strain; according to the first material state and the second material state, the material state of the wind power blade is determined, and the problem that a traditional blade structure safety monitoring method mainly depends on manual inspection and is insufficient in precision is solved.

Description

Technical Field

[0001] The present application relates to the field of monitoring, and in particular, to a method and device for determining a material state, a storage medium, and an electronic device. Background Art

[0002] With the development of science and technology, wind power generation has become an important clean energy. However, the structural safety of wind turbine blades has always attracted much attention. As a key component of wind turbines, the performance of blades directly affects the efficiency and safety of wind power generation. Therefore, it is of great practical significance to study the monitoring method of blade structural safety.

[0003] Traditional blade structure safety monitoring methods mainly rely on manual inspection, which makes it difficult to accurately measure key parameters such as blade stress, resulting in insufficient accuracy.

[0004] Regarding the problem that traditional blade structure safety monitoring methods in related technologies mainly rely on manual inspection and lack of accuracy, no effective solution has been proposed so far.

[0005] Therefore, it is necessary to improve the related technology to overcome the above-mentioned defects in the related technology. Summary of the invention

[0006] The embodiments of the present application provide a material status determination method and device, a storage medium, and an electronic device to at least solve the problem in the related art that the traditional blade structure safety monitoring method mainly relies on manual inspection and has insufficient accuracy.

[0007] According to one aspect of an embodiment of the present application, a method for determining a material state is provided, comprising: obtaining a first outer strain and a first inner strain of a first cross-section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross-section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade; determining a first material state of the first cross-section according to the first outer strain and the first inner strain, and determining a second material state of the second cross-section according to the second outer strain and the second inner strain; and determining the material state of the wind turbine blade according to the first material state and the second material state.

[0008] In an exemplary embodiment, determining a first material state of the first cross-section based on the first outer strain and the first inner strain includes: determining a first magnitude relationship between the first outer strain and a first preset strain, and determining a second magnitude relationship between the first inner strain and a second preset strain; obtaining a plurality of third outer strains and a plurality of third inner strains of the first cross-section within a target time period, wherein the plurality of third outer strains include: the first outer strain, and the plurality of third inner strains include: the first inner strain; determining the first material state of the first cross-section based on the first magnitude relationship, the second magnitude relationship, the plurality of third outer strains, and the plurality of third inner strains.

[0009] In an exemplary embodiment, determining the first material state of the first cross-section based on the first size relationship, the second size relationship, the multiple third outer strains and the multiple third inner strains includes: determining a first change trend of the multiple third outer strains, and determining a second change trend of the multiple third inner strains; determining the first material state of the first cross-section based on the first size relationship, the second size relationship, the first change trend and the second change trend.

[0010] In an exemplary embodiment, the first material state of the first cross-section is determined according to the first size relationship, the second size relationship, the first change trend and the second change trend, including: when the first size relationship indicates that the first outer strain is less than or equal to the first preset strain, and the second size relationship indicates that the first inner strain is less than or equal to the second preset strain, determining that the first material state of the first cross-section is material non-failure; when the first size relationship indicates that the first outer strain is greater than the first preset strain, and / or the second size relationship indicates that the first inner strain is greater than the second preset strain, determining that the first material state of the first cross-section is material failure; when the first change trend indicates that the outer strain of the first cross-section decreases, and the second change trend indicates that the inner strain of the first cross-section increases, determining that the first material state of the first cross-section is material bending.

[0011] In an exemplary embodiment, determining the second material state of the second cross-section based on the second outer strain and the second inner strain includes: determining a third magnitude relationship between the second outer strain and a third preset strain, and determining a fourth magnitude relationship between the second inner strain and a fourth preset strain; obtaining multiple fourth outer strains and multiple fourth inner strains of the second cross-section within a target time period, wherein the multiple fourth outer strains include: the second outer strain, and the multiple fourth inner strains include: the second inner strain; determining the second material state of the second cross-section based on the third magnitude relationship, the fourth magnitude relationship, the multiple fourth outer strains, and the multiple fourth inner strains.

[0012] In an exemplary embodiment, the second material state of the second cross-section is determined based on the third size relationship, the fourth size relationship, the multiple fourth outer strains and the multiple fourth inner strains, including: determining a third change trend of the multiple fourth outer strains, and determining a fourth change trend of the multiple fourth inner strains; determining the second material state of the second cross-section based on the third size relationship, the fourth size relationship, the third change trend and the fourth change trend.

[0013] In an exemplary embodiment, the second material state of the second cross-section is determined according to the third size relationship, the fourth size relationship, the third change trend and the fourth change trend, including: when the third size relationship indicates that the second outer strain is less than or equal to the third preset strain, and the fourth size relationship indicates that the second inner strain is less than or equal to the fourth preset strain, determining that the second material state of the second cross-section is material non-failure; when the third size relationship indicates that the second outer strain is greater than the third preset strain, and / or the fourth size relationship indicates that the second inner strain is greater than the fourth preset strain, determining that the second material state of the second cross-section is material failure; when the third change trend indicates that the outer strain of the second cross-section decreases, and the fourth change trend indicates that the inner strain of the second cross-section increases, determining that the second material state of the second cross-section is material bending.

[0014] According to another aspect of an embodiment of the present application, a device for determining a material state is also provided, including: an acquisition module, used to acquire a first outer strain and a first inner strain of a first cross-section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross-section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade; a first determination module, used to determine a first material state of the first cross-section according to the first outer strain and the first inner strain, and to determine a second material state of the second cross-section according to the second outer strain and the second inner strain; and a second determination module, used to determine the material state of the wind turbine blade according to the first material state and the second material state.

[0015] According to another aspect of the embodiments of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned material state determination method when running.

[0016] According to another aspect of an embodiment of the present application, there is also provided an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the material state determination method through the computer program.

[0017] According to another aspect of the embodiments of the present application, a computer program product is provided, including a computer program, wherein the computer program is executed by a processor to perform the above-mentioned material state determination method.

[0018] Through the embodiment of the present application, the first outer strain and the first inner strain of the first cross section of the suction surface beam cap, as well as the second outer strain and the second inner strain of the second cross section of the pressure surface beam cap are obtained through the strain grating of the optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of wind turbine blades; the first material state of the first cross section is determined according to the first outer strain and the first inner strain, and the second material state of the second cross section is determined according to the second outer strain and the second inner strain; the material state of the wind turbine blade is determined according to the first material state and the second material state. That is, in the embodiment of the present application, the outer strain and the inner strain of the suction surface beam cap and the pressure surface beam cap are obtained through the strain grating of the optical fiber, and then the material state of the wind turbine blade is determined according to the obtained parameters, which solves the problem that the traditional blade structure safety monitoring method in the related art mainly relies on manual inspection and lacks accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a hardware structure block diagram of a computer device of a method for determining a material state according to an embodiment of the present application;

[0021] Figure 2 is a flow chart of a method for determining a material state according to an embodiment of the present application;

[0022] Figure 3 is a schematic structural diagram of a fan blade according to an embodiment of the present application;

[0023] Figure 4 It is a structural block diagram of a device for determining a material state according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms and "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The method embodiments provided in the embodiments of the present application can be executed in a computer device or a similar computing device. Taking running on a computer device as an example, Figure 1 is a hardware structure block diagram of a computer device for determining a material state according to an embodiment of the present application. Figure 1 As shown, the computer device may include one or more ( Figure 1Only one is shown in the figure) processor 102 (processor 102 may include but is not limited to a microprocessor (Microprocessor Unit, referred to as MPU) or a programmable logic device (Programmable logic device, referred to as PLD)) and a memory 104 for storing data. In an exemplary embodiment, the above-mentioned computer device may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above-mentioned computer device. Figure 1 More or fewer components as shown, or with Figure 1 Equivalent functions or comparisons shown Figure 1 A different configuration with more features is shown.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for determining the material state in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, which is equivalent to implementing the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0028] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the computer device. In one embodiment, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0029] In this embodiment, a method for determining a material state is provided. Figure 2 is a flow chart of a method for determining a material state according to an embodiment of the present application, which is run in the above-mentioned computer device, and the flow includes the following steps:

[0030] Step S202, obtaining a first outer strain and a first inner strain of a first cross section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade;

[0031] like Figure 3 As shown, during the production process of wind turbine blades, optical fibers 1 are pre-embedded in the suction side beam cap 3 and the pressure side beam cap 4 of the wind turbine blade along the span direction, and strain gratings 2 are etched on the optical fibers as needed; when laying the optical fibers, the optical fibers are arranged in the secondary outer layers on both sides of the suction side beam cap 3 and the pressure side beam cap 4, respectively.

[0032] The first outer strain can be understood as Figure 3 The first inner strain of the 5-1 strain can be understood as Figure 3 The second outer strain can be understood as Figure 3 The second inner strain can be understood as Figure 3 The strain of 5-4.

[0033] It should be noted that the first cross section and the second cross section may be the same cross section of the wind turbine blade, or may be different cross sections of the wind turbine blade.

[0034] Step S204, determining a first material state of the first cross section according to the first outer strain and the first inner strain, and determining a second material state of the second cross section according to the second outer strain and the second inner strain;

[0035] Step S206: determining the material state of the wind turbine blade according to the first material state and the second material state.

[0036] Through the above steps, the first outer strain and the first inner strain of the first cross section of the suction surface beam cap, as well as the second outer strain and the second inner strain of the second cross section of the pressure surface beam cap are obtained through the strain grating of the optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of wind turbine blades; the first material state of the first cross section is determined according to the first outer strain and the first inner strain, and the second material state of the second cross section is determined according to the second outer strain and the second inner strain; the material state of the wind turbine blade is determined according to the first material state and the second material state. That is, in the embodiment of the present application, the outer strain and the inner strain of the suction surface beam cap and the pressure surface beam cap are obtained through the strain grating of the optical fiber, and then the material state of the wind turbine blade is determined according to the obtained parameters, which solves the problem that the traditional blade structure safety monitoring method in the related art mainly relies on manual inspection and lacks accuracy.

[0037] Optionally, the "determining the first material state of the first cross-section according to the first outer strain and the first inner strain" in the above step S204 can be achieved in the following way: determining a first magnitude relationship between the first outer strain and a first preset strain, and determining a second magnitude relationship between the first inner strain and a second preset strain; obtaining a plurality of third outer strains and a plurality of third inner strains of the first cross-section within a target time period, wherein the plurality of third outer strains include: the first outer strain, and the plurality of third inner strains include: the first inner strain; determining the first material state of the first cross-section according to the first magnitude relationship, the second magnitude relationship, the plurality of third outer strains, and the plurality of third inner strains.

[0038] It should be noted that the first preset strain and the second preset strain may be the same or different; the first preset strain and the second preset strain refer to the maximum strain value that the material can withstand while maintaining elastic behavior. Once this value is exceeded, the material may be permanently deformed or damaged.

[0039] In an embodiment of the present application, when determining the first material state of the first cross-section of the suction surface beam cap, it is also necessary to obtain multiple third outer strains and multiple third inner strains of the first cross-section within the target time period, and then determine the first material state of the first cross-section through the magnitude relationship between the first outer strain and the first preset strain, the magnitude relationship between the first inner strain and the second preset strain, and the multiple third outer strains and multiple third inner strains of the first cross-section within the target time period.

[0040] Optionally, determining the first material state of the first cross-section based on the first size relationship, the second size relationship, the multiple third outer strains and the multiple third inner strains can be achieved in the following manner: determining a first change trend of the multiple third outer strains, and determining a second change trend of the multiple third inner strains; determining the first material state of the first cross-section based on the first size relationship, the second size relationship, the first change trend and the second change trend.

[0041] Specifically, determining the first material state of the first cross-section according to the first size relationship, the second size relationship, the first change trend and the second change trend includes: when the first size relationship indicates that the first outer strain is less than or equal to the first preset strain, and the second size relationship indicates that the first inner strain is less than or equal to the second preset strain, determining that the first material state of the first cross-section is material non-failure; when the first size relationship indicates that the first outer strain is greater than the first preset strain, and / or the second size relationship indicates that the first inner strain is greater than the second preset strain, determining that the first material state of the first cross-section is material failure; when the first change trend indicates that the outer strain of the first cross-section decreases, and the second change trend indicates that the inner strain of the first cross-section increases, determining that the first material state of the first cross-section is material bending.

[0042] That is to say, when the first outer strain is less than or equal to the first preset strain, and the first inner strain is less than or equal to the second preset strain, it is determined that the first cross-section material of the suction surface beam cap has not failed; when the first outer strain is greater than the first preset strain, and the first inner strain is greater than the second preset strain, it is determined that the first cross-section material of the suction surface beam cap has failed; when the first change trend indicates that the outer strain of the first cross-section decreases, and the second change trend indicates that the inner strain of the first cross-section increases, the first cross-section material of the suction surface beam cap is buckled.

[0043] Further, when the first outer strain is less than or equal to the first preset strain, and the first inner strain is less than or equal to the second preset strain, but the first change trend indicates that the outer strain of the first section decreases, and the second change trend indicates that the inner strain of the first section increases, it means that the first section material of the suction surface beam cap has not failed, but has buckled.

[0044] In an exemplary embodiment, determining the second material state of the second cross-section based on the second outer strain and the second inner strain includes: determining a third magnitude relationship between the second outer strain and a third preset strain, and determining a fourth magnitude relationship between the second inner strain and a fourth preset strain; obtaining multiple fourth outer strains and multiple fourth inner strains of the second cross-section within a target time period, wherein the multiple fourth outer strains include: the second outer strain, and the multiple fourth inner strains include: the second inner strain; determining the second material state of the second cross-section based on the third magnitude relationship, the fourth magnitude relationship, the multiple fourth outer strains, and the multiple fourth inner strains.

[0045] It should be noted that the third preset strain and the fourth preset strain may be the same or different; the third preset strain and the fourth preset strain refer to the maximum strain value that the material can withstand while maintaining elastic behavior. Once this value is exceeded, the material may be permanently deformed or damaged.

[0046] In an embodiment of the present application, when determining the second material state of the second cross-section of the pressure surface beam cap, it is also necessary to obtain multiple fourth outer strains and multiple fourth inner strains of the second cross-section within the target time period, and then determine the second material state of the second cross-section through the magnitude relationship between the second outer strain and the third preset strain, the magnitude relationship between the second inner strain and the fourth preset strain, and the multiple fourth outer strains and multiple fourth inner strains of the second cross-section within the target time period.

[0047] In an exemplary embodiment, the second material state of the second cross-section is determined based on the third size relationship, the fourth size relationship, the multiple fourth outer strains and the multiple fourth inner strains, including: determining a third change trend of the multiple fourth outer strains, and determining a fourth change trend of the multiple fourth inner strains; determining the second material state of the second cross-section based on the third size relationship, the fourth size relationship, the third change trend and the fourth change trend.

[0048] In an exemplary embodiment, the second material state of the second cross-section is determined according to the third size relationship, the fourth size relationship, the third change trend and the fourth change trend, including: when the third size relationship indicates that the second outer strain is less than or equal to the third preset strain, and the fourth size relationship indicates that the second inner strain is less than or equal to the fourth preset strain, determining that the second material state of the second cross-section is material non-failure; when the third size relationship indicates that the second outer strain is greater than the third preset strain, and / or the fourth size relationship indicates that the second inner strain is greater than the fourth preset strain, determining that the second material state of the second cross-section is material failure; when the third change trend indicates that the outer strain of the second cross-section decreases, and the fourth change trend indicates that the inner strain of the second cross-section increases, determining that the second material state of the second cross-section is material bending.

[0049] That is to say, when the second outer strain is less than or equal to the third preset strain, and the second inner strain is less than or equal to the fourth preset strain, it is determined that the second cross-section material of the pressure surface beam cap has not failed; when the second outer strain is greater than the third preset strain, and the second inner strain is greater than the fourth preset strain, it is determined that the second cross-section material of the pressure surface beam cap has failed; when the third change trend indicates that the outer strain of the second cross-section decreases, and the fourth change trend indicates that the inner strain of the second cross-section increases, the second cross-section material of the pressure surface beam cap is buckled.

[0050] Further, when the second outer strain is less than or equal to the third preset strain, and the second inner strain is less than or equal to the fourth preset strain, but the third change trend indicates that the outer strain of the second section decreases, and the fourth change trend indicates that the inner strain of the second section increases, it means that the second section material of the pressure surface beam cap has not failed, but has buckled.

[0051] Optionally, determining the material state of the wind turbine blade according to the first material state and the second material state includes: when the first material state indicates that the material has not failed and the second material state indicates that the material has not failed, determining the material state of the wind turbine blade as material has not failed; when the first material state indicates material failure and / or the second material state indicates material failure, determining the material state of the wind turbine blade as material failure; when the first material state indicates that the material has been bent and / or the second material state indicates that the material has been bent, determining the material state of the wind turbine blade as material has been bent.

[0052] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0053] In this embodiment, a device for determining a material state is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be repeated hereafter. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0054] Figure 4 : is a structural block diagram of a device for determining a material state according to an embodiment of the present application, the device comprising:

[0055] An acquisition module 42 is used to acquire a first outer strain and a first inner strain of a first cross section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade;

[0056] A first determination module 44, configured to determine a first material state of the first cross section according to the first outer strain and the first inner strain, and to determine a second material state of the second cross section according to the second outer strain and the second inner strain;

[0057] The second determination module 46 is configured to determine the material state of the wind turbine blade according to the first material state and the second material state.

[0058] Through the above device, the first outer strain and the first inner strain of the first cross section of the suction surface beam cap, as well as the second outer strain and the second inner strain of the second cross section of the pressure surface beam cap are obtained through the strain grating of the optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of wind turbine blades; the first material state of the first cross section is determined according to the first outer strain and the first inner strain, and the second material state of the second cross section is determined according to the second outer strain and the second inner strain; the material state of the wind turbine blade is determined according to the first material state and the second material state. That is, in the embodiment of the present application, the outer strain and the inner strain of the suction surface beam cap and the pressure surface beam cap are obtained through the strain grating of the optical fiber, and then the material state of the wind turbine blade is determined according to the obtained parameters, which solves the problem that the traditional blade structure safety monitoring method in the related art mainly relies on manual inspection and lacks accuracy.

[0059] In an exemplary embodiment, the first determination module 44 is used to determine a first magnitude relationship between the first outer strain and a first preset strain, and to determine a second magnitude relationship between the first inner strain and a second preset strain; obtain multiple third outer strains and multiple third inner strains of the first section within a target time period, wherein the multiple third outer strains include: the first outer strain, and the multiple third inner strains include: the first inner strain; determine the first material state of the first section according to the first magnitude relationship, the second magnitude relationship, the multiple third outer strains and the multiple third inner strains.

[0060] In an exemplary embodiment, the first determination module 44 is used to determine a first change trend of the multiple third outer strains, and to determine a second change trend of the multiple third inner strains; and to determine a first material state of the first section based on the first size relationship, the second size relationship, the first change trend, and the second change trend.

[0061] In an exemplary embodiment, the first determination module 44 is used to determine that the first material state of the first cross-section is that the material has not failed when the first size relationship indicates that the first outer strain is less than or equal to the first preset strain, and the second size relationship indicates that the first inner strain is less than or equal to the second preset strain; determine that the first material state of the first cross-section is that the material has failed when the first size relationship indicates that the first outer strain is greater than the first preset strain, and / or the second size relationship indicates that the first inner strain is greater than the second preset strain; and determine that the first material state of the first cross-section is that the material has bent when the first change trend indicates that the outer strain of the first cross-section decreases, and the second change trend indicates that the inner strain of the first cross-section increases.

[0062] In an exemplary embodiment, the first determination module 44 is used to determine a third magnitude relationship between the second outer strain and the third preset strain, and to determine a fourth magnitude relationship between the second inner strain and the fourth preset strain; obtain multiple fourth outer strains and multiple fourth inner strains of the second section within a target time period, wherein the multiple fourth outer strains include: the second outer strain, and the multiple fourth inner strains include: the second inner strain; determine the second material state of the second section based on the third magnitude relationship, the fourth magnitude relationship, the multiple fourth outer strains and the multiple fourth inner strains.

[0063] In an exemplary embodiment, the first determination module 44 is used to determine the third change trend of the multiple fourth outer strains, and to determine the fourth change trend of the multiple fourth inner strains; and to determine the second material state of the second cross section based on the third size relationship, the fourth size relationship, the third change trend and the fourth change trend.

[0064] In an exemplary embodiment, the first determination module 44 is used to determine that the second material state of the second cross-section is that the material has not failed when the third size relationship indicates that the second outer strain is less than or equal to the third preset strain, and the fourth size relationship indicates that the second inner strain is less than or equal to the fourth preset strain; determine that the second material state of the second cross-section is that the material has failed when the third size relationship indicates that the second outer strain is greater than the third preset strain, and / or the fourth size relationship indicates that the second inner strain is greater than the fourth preset strain; and determine that the second material state of the second cross-section is that the material has bent when the third change trend indicates that the outer strain of the second cross-section has decreased, and the fourth change trend indicates that the inner strain of the second cross-section has increased.

[0065] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0066] S1, obtaining a first outer strain and a first inner strain of a first cross section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade;

[0067] S2, determining a first material state of the first cross section according to the first outer strain and the first inner strain, and determining a second material state of the second cross section according to the second outer strain and the second inner strain;

[0068] S3: Determine the material state of the wind turbine blade according to the first material state and the second material state.

[0069] Optionally, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0070] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0071] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0072] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0073] S1, obtaining a first outer strain and a first inner strain of a first cross section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade;

[0074] S2, determining a first material state of the first cross section according to the first outer strain and the first inner strain, and determining a second material state of the second cross section according to the second outer strain and the second inner strain;

[0075] S3: Determine the material state of the wind turbine blade according to the first material state and the second material state.

[0076] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0077] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0078] An embodiment of the present application further provides another computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0079] An embodiment of the present application also provides a computer program, which includes computer instructions, which are stored in a computer-readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps in any one of the above method embodiments.

[0080] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0081] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0082] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining a material state, characterized in that: include: Obtaining a first outer strain and a first inner strain of a first cross section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade; determining a first material state of the first cross section according to the first outer strain and the first inner strain, and determining a second material state of the second cross section according to the second outer strain and the second inner strain; The material state of the wind turbine blade is determined according to the first material state and the second material state.

2. The method for determining the material state according to claim 1, characterized in that: Determining a first material state of the first cross section according to the first outer strain and the first inner strain includes: Determining a first magnitude relationship between the first outer strain and a first preset strain, and determining a second magnitude relationship between the first inner strain and a second preset strain; Acquire a plurality of third outer strains and a plurality of third inner strains of the first cross section within a target time period, wherein the plurality of third outer strains include: the first outer strain, and the plurality of third inner strains include: the first inner strain; A first material state of the first cross-section is determined based on the first magnitude relationship, the second magnitude relationship, the plurality of third outer strains, and the plurality of third inner strains.

3. The method for determining the material state according to claim 2, characterized in that: Determining a first material state of the first cross section according to the first magnitude relationship, the second magnitude relationship, the plurality of third outer strains, and the plurality of third inner strains includes: determining a first change trend of the plurality of third outer strains, and determining a second change trend of the plurality of third inner strains; A first material state of the first cross section is determined according to the first size relationship, the second size relationship, the first change trend, and the second change trend.

4. The method for determining the material state according to claim 3, characterized in that: Determining a first material state of the first cross-section according to the first size relationship, the second size relationship, the first change trend, and the second change trend includes: When the first magnitude relationship indicates that the first outer strain is less than or equal to the first preset strain, and the second magnitude relationship indicates that the first inner strain is less than or equal to the second preset strain, determining that the first material state of the first cross section is that the material has not failed; When the first magnitude relationship indicates that the first outer strain is greater than the first preset strain, and / or when the second magnitude relationship indicates that the first inner strain is greater than the second preset strain, determining that the first material state of the first cross section is material failure; When the first variation trend indicates that the outer strain of the first cross section decreases, and the second variation trend indicates that the inner strain of the first cross section increases, it is determined that the first material state of the first cross section is that the material undergoes bending.

5. The method for determining the material state according to claim 1, characterized in that: Determining a second material state of the second cross section according to the second outer strain and the second inner strain includes: determining a third magnitude relationship between the second outer strain and a third preset strain, and determining a fourth magnitude relationship between the second inner strain and a fourth preset strain; Acquire a plurality of fourth outer strains and a plurality of fourth inner strains of the second cross section within a target time period, wherein the plurality of fourth outer strains include: the second outer strain, and the plurality of fourth inner strains include: the second inner strain; A second material state of the second cross-section is determined based on the third magnitude relationship, the fourth magnitude relationship, the plurality of fourth outer strains, and the plurality of fourth inner strains.

6. The method for determining the material state according to claim 5, characterized in that: Determining a second material state of the second cross section according to the third magnitude relationship, the fourth magnitude relationship, the plurality of fourth outer strains, and the plurality of fourth inner strains includes: determining a third change trend of the plurality of fourth outer strains, and determining a fourth change trend of the plurality of fourth inner strains; A second material state of the second cross section is determined according to the third size relationship, the fourth size relationship, the third change trend, and the fourth change trend.

7. The method for determining the material state according to claim 6, characterized in that: Determining a second material state of the second cross section according to the third size relationship, the fourth size relationship, the third change trend, and the fourth change trend includes: When the third magnitude relationship indicates that the second outer strain is less than or equal to the third preset strain, and the fourth magnitude relationship indicates that the second inner strain is less than or equal to the fourth preset strain, determining that the second material state of the second cross section is that the material has not failed; When the third magnitude relationship indicates that the second outer strain is greater than the third preset strain, and / or when the fourth magnitude relationship indicates that the second inner strain is greater than the fourth preset strain, determining that the second material state of the second cross section is material failure; When the third change trend indicates that the outer strain of the second cross section decreases, and the fourth change trend indicates that the inner strain of the second cross section increases, it is determined that the second material state of the second cross section is that the material has been bent.

8. A device for determining a material state, characterized in that: include: An acquisition module, used for acquiring a first outer strain and a first inner strain of a first cross section of a suction surface beam cap, and a second outer strain and a second inner strain of a second cross section of a pressure surface beam cap through a strain grating of an optical fiber, wherein the suction surface beam cap and the pressure surface beam cap are beam caps of a wind turbine blade; a first determining module, configured to determine a first material state of the first cross section according to the first outer strain and the first inner strain, and to determine a second material state of the second cross section according to the second outer strain and the second inner strain; The second determining module is configured to determine the material state of the wind turbine blade according to the first material state and the second material state.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method described in any one of claims 1 to 7 when executed.

10. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.

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