Wing deformation measurement method, device and equipment and storage medium

Abstract

The invention discloses a wing deformation measurement method and device, equipment and a storage medium. The method comprises the following steps: carrying out time calibration on a plurality of acquisition devices, and acquiring a plurality of deformation speckle images of a target wing at different acquisition angles based on the plurality of acquisition devices; performing three-dimensional reconstruction processing on the plurality of deformation speckle images to obtain deformation wing data; and determining a deformation measurement result of the target wing based on the deformation wing data and standard wing data. Through the arrangement of the technical characteristics, the reliability of the deformation measurement result of the target wing can be improved.

Description

Technical Field

[0001] The present application relates to the field of aviation aircraft technology, and specifically to a wing deformation measurement method, device, equipment and storage medium. Background Art

[0002] During flight, an aircraft's wings may deform due to aerodynamic forces and structural loads, resulting in deformations such as memory bending and twisting. Exceeding a certain level of wing deformation can trigger flutter, leading to structural instability or even damage, seriously threatening flight safety. Therefore, testing and analyzing wing deformation is crucial in aircraft structural design and airworthiness certification.

[0003] Traditional deformation testing methods generally suffer from shortcomings such as a limited number of measurement points and poor real-time performance. Furthermore, they are primarily used for ground-based wind tunnel testing and are unable to meet the real-time testing requirements of flight. Consequently, when measuring wing deformation during actual flight, these methods still suffer from poor measurement accuracy. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this application is how to improve the accuracy of wing deformation measurement.

[0005] In order to solve at least one of the technical problems mentioned above, the present application discloses a wing deformation measurement method, device, equipment and storage medium.

[0006] According to one aspect of the present application, a method for measuring wing deformation is provided, comprising:

[0007] Performing time calibration on multiple acquisition devices, and acquiring multiple deformation speckle images of the target wing at different acquisition angles based on the multiple acquisition devices;

[0008] Perform three-dimensional reconstruction on multiple deformation speckle images to obtain deformation wing data;

[0009] The deformation measurement result of the target wing is determined based on the deformed wing data and the standard wing data.

[0010] Optionally, each deformation speckle image corresponds to an acquisition time;

[0011] Perform 3D reconstruction on multiple deformation speckle images to obtain deformed wing data, including:

[0012] determining a plurality of image pairs from a plurality of deformation speckle images based on acquisition time;

[0013] Performing pixel feature matching on the speckle of each image pair in the multiple image pairs to obtain a feature matching result;

[0014] Three-dimensional reconstruction is performed based on the feature matching results to obtain the deformed wing data.

[0015] Optionally, three-dimensional reconstruction processing is performed based on the feature matching results to obtain deformed wing data, including:

[0016] Based on the feature matching results and the device parameters of multiple acquisition devices, geometric calculations are performed to obtain three-dimensional data information;

[0017] Based on the three-dimensional data information, the target wing is reconstructed in three dimensions to obtain the deformed wing data.

[0018] Optionally, a standard control point with a shape variable of 0 is set on the target wing;

[0019] The method also includes:

[0020] Determine external parameter measurement data based on the standard position information of the standard control point and the device position information of multiple acquisition devices;

[0021] The deformed wing data is adjusted based on the external parameter standard data and the external parameter measurement data.

[0022] Optionally, the method further comprises:

[0023] Using multiple acquisition devices to acquire multiple calibration images corresponding to the calibration object;

[0024] Based on multiple calibration images, determine the relative position information and relative posture information of the acquisition device relative to the calibration object;

[0025] Based on the relative position information and the relative posture information, the device parameters of the multiple acquisition devices are adjusted.

[0026] Optionally, multiple deformation speckle images of the target wing are collected at different angles based on multiple collection devices, including:

[0027] An image acquisition instruction is sent to multiple acquisition devices so that the lighting units and shooting units of the multiple acquisition devices are triggered simultaneously at the same acquisition moment, and multiple deformation speckle images of the target wing are acquired at different acquisition angles.

[0028] Optionally, the method further comprises:

[0029] Generate risk warning information and maintenance recommendation information based on deformation measurement results.

[0030] According to a second aspect of the present application, a wing deformation measuring device is provided, comprising:

[0031] An image acquisition module is used to perform time calibration on multiple acquisition devices and acquire multiple deformation speckle images of the target wing at different acquisition angles based on the multiple acquisition devices;

[0032] An image processing module is used to perform three-dimensional reconstruction on multiple deformation speckle images to obtain deformed wing data;

[0033] The deformation determination module is used to determine the deformation measurement result of the target wing based on the deformed wing data and the standard wing data.

[0034] According to a third aspect of the present application, an electronic device is provided, comprising a processor and a memory, wherein the memory stores at least one instruction and at least one program, and the at least one instruction and at least one program are loaded and executed by the processor to implement any of the above methods for measuring wing deformation.

[0035] According to a fourth aspect of the present application, a computer storage medium is provided, in which at least one instruction and at least one program are stored. The at least one instruction and at least one program are loaded and executed by a processor to implement any of the above wing deformation measurement methods.

[0036] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program / instruction, wherein when the computer program / instruction is executed by a processor, the computer program / instruction implements any of the above methods for measuring wing deformation.

[0037] The wing deformation measurement method disclosed in the embodiments of this application first performs time calibration on multiple acquisition devices before image acquisition. This ensures that each camera captures images synchronously and covers different areas of the wing, improving the comprehensiveness and consistency of image acquisition. Furthermore, multiple deformation speckle images of the target wing are captured by multiple acquisition devices at different acquisition angles. Three-dimensional reconstruction of these images accurately restores the three-dimensional spatial topography of the wing surface. Comparative analysis of the reconstructed deformed wing data with standard wing data enables precise measurement and real-time tracking of wing deformation, thereby improving the effectiveness and reliability of wing deformation measurement.

[0038] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0041] Figure 1 A schematic flow chart of a wing deformation measurement method according to a specific embodiment of the present disclosure;

[0042] Figure 2 A schematic diagram of a flow chart corresponding to a three-dimensional reconstruction process provided in a specific embodiment of the present disclosure;

[0043] Figure 3 A schematic diagram of a process flow corresponding to adjustment of deformation measurement results provided in a specific embodiment of the present disclosure;

[0044] Figure 4 A schematic structural diagram corresponding to a wing deformation measurement device provided in a specific embodiment of the present disclosure;

[0045] Figure 5 A system architecture diagram corresponding to the wing deformation measurement system provided in a specific embodiment of the present disclosure;

[0046] Figure 6 A flowchart corresponding to another wing deformation measurement method provided in a specific embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0048] It should be noted that the terms "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 variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes 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.

[0049] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0050] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0051] The term "and / or" as used herein describes an association relationship between associated objects, indicating that three relationships can exist. For example, "A and / or B" can represent the existence of A alone, the simultaneous existence of A and B, and the existence of B alone. Furthermore, the term "at least one" as used herein refers to any combination of at least two of any one or more of a plurality of items. For example, "at least one of A, B, and C" can represent any one or more elements selected from the set consisting of A, B, and C.

[0052] In addition, numerous specific details are provided in the following detailed description to better illustrate the present disclosure. Those skilled in the art will appreciate that the present disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main points of the present disclosure.

[0053] Figure 1 The flowchart of the wing deformation measurement method provided by the exemplary embodiment of the present disclosure is shown. The execution subject can be any terminal device or system that can be applied to an aircraft and execute the wing deformation measurement method. Figure 1 As shown, a wing deformation measurement method includes:

[0054] Step S101: Time calibration is performed on multiple acquisition devices, and multiple deformation speckle images of a target wing are acquired at different acquisition angles based on the multiple acquisition devices.

[0055] In some embodiments, the multiple acquisition devices can be multiple binocular cameras, installed inside the aircraft cabin to ensure a stable and controllable environment for measuring wing deformation. The aircraft has multiple wings, each of which can be provided with a speckle pattern. The location, size, and number of the speckle patterns on the wings can be customized based on actual needs. For example, the speckle pattern can be applied to the flaps of a wing. Of the multiple wings, the wing whose deformation is to be measured is the target wing.

[0056] By applying a film with a speckle pattern to the wing, the number of identifiable and matching feature points increases, improving the accuracy and resolution of stereo vision and deformation measurement. Furthermore, the speckle film method is low-cost, flexible, and reliable, and does not require permanent modification to the wing.

[0057] Before capturing images of the target wing using multiple acquisition devices, time calibration may be performed first to ensure that the multiple acquisition devices can be triggered simultaneously at the same acquisition moment.

[0058] When wing deformation measurement is required, the system first reads the time source obtained from a network time protocol server, hardware clock, or other means, and sets the system clock to ensure that all time tags and timestamps are accurate and consistent. Image acquisition instructions are then sent to multiple acquisition devices, so that their lighting units and camera units are triggered simultaneously at the same acquisition time, capturing multiple deformation speckle images of the target wing at different acquisition angles.

[0059] In some embodiments, the illumination unit can be a flash, and the control unit can be a shutter. The flash provides additional light to improve lighting conditions; in low-light environments, it can help reduce shadows and highlight the subject. The shutter trigger is responsible for actually capturing the image, controlling the shutter's opening and closing time to determine the exposure of the photo. Image acquisition instructions simultaneously trigger the illumination units and control units of multiple acquisition devices, resulting in clear and bright images of the captured deformed speckle pattern, thereby improving the image quality.

[0060] In some embodiments, a deformation speckle image is an image corresponding to a speckle pattern on a target wing, captured at different angles by multiple acquisition devices at the same time. The multiple deformation speckle patterns can include speckle patterns at different angles, allowing deformation measurements of the wing's deformation to be determined based on these speckle patterns. For a target wing, the multiple acquisition devices must be positioned within the aircraft cabin to capture images corresponding to the speckle pattern at different angles.

[0061] Step S102: performing three-dimensional reconstruction processing on the multiple deformation speckle images to obtain deformed wing data.

[0062] In some embodiments, the deformable wing data may include three-dimensional structural information of the target wing during deformation measurement. The three-dimensional structural information corresponding to the target wing surface shape is derived by digitally processing and analyzing multiple deformation speckle images, including phase recovery and image registration.

[0063] like Figure 2 As shown, step S102 includes:

[0064] Step S201: determining a plurality of image pairs from a plurality of deformation speckle images based on acquisition time;

[0065] Step S202: performing pixel feature matching on the speckle pattern of each of the multiple image pairs to obtain a feature matching result;

[0066] Step S203: Perform three-dimensional reconstruction based on the feature matching results to obtain deformed wing data.

[0067] In some embodiments, each deformed speckle image has a corresponding acquisition angle and an acquisition time. From the multiple deformed speckle images, the deformed speckle images acquired by multiple acquisition devices at the same acquisition time are determined as a group of image pairs.

[0068] For a set of image pairs, each set includes multiple sets of identical feature points, each consisting of multiple feature points corresponding to the same location in images acquired by different acquisition devices. A correlation algorithm or phase matching technique can be used to perform pixel feature matching on the speckle patterns in each deformed speckle image to identify the identical feature points of the speckle pattern at different angles and obtain feature matching results. Based on these feature matching results, information such as the displacement and deformation of the speckle pattern in the different deformed speckle images can be determined. The feature matching results represent the set of best matching points among the multiple identical feature points contained in the set of image pairs.

[0069] In some embodiments, in step S203, cross-correlation, phase correlation, or optical flow methods can be used to calculate similarities or transformation relationships between different positions to ultimately determine the coordinates corresponding to the best matching point. Three-dimensional reconstruction is then performed based on the coordinates corresponding to the best matching point to obtain deformable wing data.

[0070] Specifically, step S203 may include:

[0071] Based on the feature matching results and the device parameters of multiple acquisition devices, geometric calculations are performed to obtain three-dimensional data information;

[0072] Based on the three-dimensional data information, the target wing is reconstructed in three dimensions to obtain the deformed wing data.

[0073] In some embodiments, the acquisition device's device parameters may include external and internal parameter data. Internal parameter data may include focal length, principal point, distortion coefficient, and the like, while external parameter data may include position information, attitude, and other information. The acquisition device corresponds to standard device parameters and measurement device parameters used during actual wing deformation measurement. Standard device parameters are known parameters obtained through calibration prior to the start of wing deformation measurement, and include internal and external standard parameter data.

[0074] Specifically, the 3D reconstruction process can be implemented based on triangulation. Geometric calculations are performed by combining the internal and external reference standard data corresponding to the acquisition device, along with the coordinate data corresponding to the feature matching results determined in step S202, to determine the actual positions of multiple optimal matching points in 3D space, thereby obtaining 3D data information. The 3D shape and structure of the target wing are then reconstructed to obtain deformed wing data. The deformed wing data is the 3D shape and structure data corresponding to the target wing obtained through wing deformation measurement during actual flight.

[0075] In addition, before 3D reconstruction, multiple acquisition devices can be calibrated to improve the reliability of pixel feature matching of multiple deformed speckle images. The calibration methods include:

[0076] Using multiple acquisition devices to acquire multiple calibration images corresponding to the calibration object;

[0077] Based on multiple calibration images, determine the relative position information and relative posture information of the acquisition device relative to the calibration object;

[0078] Based on the relative position information and the relative posture information, the device parameters of the multiple acquisition devices are adjusted.

[0079] In some embodiments, multiple acquisition devices are used to capture multiple calibration images corresponding to the same calibration object. A camera calibration algorithm is then used to combine these multiple calibration images to calculate the acquisition device's intrinsic parameter matrix, which may include focal length, principal point, distortion coefficient, etc. Stereo calibration is then performed using multiple calibration images to calculate the relative position and relative posture information between the multiple acquisition devices and the same calibration object, resulting in an extrinsic parameter matrix. This extrinsic parameter matrix may include a rotation matrix and a translation vector.

[0080] By calibrating the acquisition device, you can accurately calibrate its internal and external standard parameters, ensuring measurement accuracy under different shooting conditions. Calibration with the same calibration object allows multiple acquisition devices to be considered to be in the same reference coordinate system, ensuring data consistency and comparability.

[0081] After the deformable wing data is determined, in order to improve the accuracy and reliability of the deformable wing data, it is necessary to eliminate the jitter effect of the acquisition equipment during the actual flight process.

[0082] A standard control point with a zero deformation value can be pre-set on the target wing. For example, the standard control point can be set at the wing root or the fuselage. It can be assumed that when the deformation value is less than a preset deformation threshold, the deformation value is zero. The preset deformation threshold can be determined based on whether the deformation value will negatively impact the fuselage. If the standard control point is set at the wing root, it can be determined using experimental data from multiple simulation measurements.

[0083] Specifically, such as Figure 3 As shown, the method further includes:

[0084] Step S301: determining external parameter measurement data based on standard position information of a standard control point and device position information of a plurality of acquisition devices;

[0085] Step S302: Adjust the deformed wing data based on the extrinsic parameter standard data and the extrinsic parameter measurement data.

[0086] In some embodiments, the acquired deformation speckle image can reflect wing deformation information. Furthermore, because the position of the acquisition device is affected during flight, the deformation speckle image can also reflect changes in the acquisition device's position. Combined with the reference coordinate system corresponding to the standard control points, the position changes of the acquisition device at different acquisition times can be unified, thereby ensuring the consistency and comparability of the acquired data. The influence of the acquisition device's motion on the deformation measurement data can be mitigated by using the acquisition device's extrinsic measurement data and extrinsic standard data.

[0087] Specifically, the extrinsic standard data is the extrinsic data corresponding to the acquisition device when the aircraft is not moving. Since the standard control point is located in the region where the deformation is zero, it can be considered that the extrinsic parameter changes between the standard control point and the acquisition device are affected by the movement of the acquisition device. Therefore, the instantaneous motion matrix of the acquisition device can be determined by calculating the changes between the extrinsic standard data and the extrinsic parameter measurement data. Furthermore, the extrinsic parameter changes caused by wing deformation can be removed based on the instantaneous motion matrix. After multiplying the coordinate data corresponding to the deformed wing data by the inverse transformation of the instantaneous motion matrix, the calibrated deformed wing data is obtained.

[0088] The above method can eliminate the influence of the vibration of the acquisition equipment during the actual flight on the accuracy of the deformation wing data, thereby improving the stability and accuracy of the wing deformation measurement.

[0089] Step S103: Determine the deformation measurement result of the target wing based on the deformed wing data and the standard wing data.

[0090] In some embodiments, the deformed wing data and the standard wing data may be compared to determine the deformation measurement results of the target wing. Based on the coordinate changes of each measurement point, it is determined whether the target wing is deformed and the deformation state of the wing.

[0091] Specifically, the wing deformation state can be graded according to the severity of the problems caused by the wing deformation. For example, the deformation level of the wing deformation state can be divided into primary deformation, intermediate deformation, severe deformation, etc.

[0092] Furthermore, after the deformation measurement result is determined, risk warning information and maintenance suggestion information may be generated based on the deformation measurement result.

[0093] In some embodiments, risk warning information and maintenance suggestion information can be determined based on the deformation level of the wing deformation state, so that use and maintenance can be reasonably arranged, the number of unnecessary inspections can be reduced, the service life of the wing can be extended, and the operational efficiency of the aircraft can be improved.

[0094] In this embodiment, a randomly generated speckle pattern attached to the upper surface of an aircraft wing is observed through multiple windows within the cabin. Stereoscopic vision acquisition equipment captures images of the randomly generated deformation speckle pattern attached to the upper surface of the wing from different angles. The three-dimensional shape of the wing surface is reconstructed by matching the speckle patterns. This enables high-precision, real-time monitoring of minute wing deformations, ensuring flight safety. Furthermore, by calibrating the acquisition equipment's displacement in real time based on the measurement information during the actual measurement process, the reliability and accuracy of the deformation measurement results can be further improved.

[0095] In addition, the wing deformation measurement method disclosed in the embodiment of the present application is a non-contact measurement. The acquisition equipment is installed inside the cabin. While ensuring that the acquisition equipment is in a stable and controllable environment, it can avoid any impact on the aerodynamic performance of the aircraft due to the modification of the aerodynamic shape of the aircraft itself, thereby ensuring that real data during the aircraft flight is obtained.

[0096] Correspondingly, the technical solution of this application also discloses a wing deformation measuring device, such as Figure 4 The device comprises:

[0097] An image acquisition module 410 is configured to perform time calibration on multiple acquisition devices and acquire multiple deformation speckle images of the target wing at different acquisition angles based on the multiple acquisition devices;

[0098] An image processing module 420 is used to perform three-dimensional reconstruction processing on multiple deformation speckle images to obtain deformed wing data;

[0099] The deformation determination module 430 is configured to determine the deformation measurement result of the target wing based on the deformed wing data and the standard wing data.

[0100] In some embodiments, the image processing module 420 includes:

[0101] An image pair determination module, configured to determine a plurality of image pairs from a plurality of deformation speckle images based on acquisition time;

[0102] A pixel matching module is used to perform pixel feature matching on the speckle of each of the multiple image pairs to obtain a feature matching result;

[0103] The first reconstruction module is used to perform three-dimensional reconstruction processing based on the feature matching results to obtain deformed wing data.

[0104] In some embodiments, the first reconstruction module includes:

[0105] A geometric calculation module is used to perform geometric calculations based on feature matching results and device parameters of multiple acquisition devices to obtain three-dimensional data information;

[0106] The second reconstruction module is used to perform three-dimensional reconstruction processing on the target wing based on the three-dimensional data information to obtain deformed wing data.

[0107] In some embodiments, the apparatus further comprises:

[0108] An external parameter data determination module is used to determine external parameter measurement data based on standard position information of standard control points and device position information of multiple acquisition devices;

[0109] The data calibration module is used to adjust the deformable wing data based on the external parameter standard data and the external parameter measurement data.

[0110] In some embodiments, the apparatus further comprises:

[0111] A calibration image acquisition module is used to acquire multiple calibration images corresponding to the calibration object using multiple acquisition devices;

[0112] A relative information determination module is used to determine the relative position information and relative posture information of the acquisition device relative to the calibration object based on multiple calibration images;

[0113] The device parameter adjustment module is used to adjust the device parameters of multiple acquisition devices based on relative position information and relative posture information.

[0114] In some embodiments, the image acquisition module 410 includes:

[0115] An image acquisition instruction is sent to multiple acquisition devices so that the lighting units and shooting units of the multiple acquisition devices are triggered simultaneously at the same acquisition moment, and multiple deformation speckle images of the target wing are acquired at different acquisition angles.

[0116] In some embodiments, the apparatus further comprises:

[0117] The feedback information generation module is used to generate risk warning information and maintenance suggestion information based on the deformation measurement results.

[0118] The device and method embodiments in the device embodiment are based on the same inventive concept and are used to implement the above-mentioned wing deformation measurement method.

[0119] The present application also provides a wing deformation measurement system for implementing the above-mentioned wing deformation measurement method, such as Figure 5 As shown, the wing deformation measurement system includes:

[0120] The synchronous pulse control unit is used to achieve synchronous triggering of the excitation signal and control of the stroboscopic light source. The synchronous pulse control unit includes an internal clock interface, a stroboscopic and flashing unit, a shutter synchronization unit, and a time stamp unit. The internal clock interface is used to ensure the synchronization and coordination of the operations of each module, provide accurate timestamps, schedule tasks regularly, detect and diagnose faults, and optimize system performance. The stroboscopic and flashing unit is used to eliminate the tailing phenomenon of images acquired under high-speed dynamic conditions and achieve high-quality imaging. The shutter synchronization unit is used to ensure that multiple acquisition devices can be accurately synchronized during the acquisition process, unify the exposure time, and capture images at the same acquisition moment, thereby improving the accuracy of image registration and avoiding data errors and image blur caused by asynchronous acquisition devices. The time stamp unit is used to mark the acquisition timestamp of the acquired image according to the clock provided by the flight control system.

[0121] The deformation image acquisition unit is used to synchronously acquire the speckle pattern of the wing surface at different viewing angles based on multiple visual sensors or multiple acquisition devices to obtain deformation speckle images under different deformation states.

[0122] The image processing and detection unit is used to perform three-dimensional reconstruction of the wing based on the two-dimensional deformation speckle image and eliminate errors caused by the jitter of the acquisition device during actual flight. The image processing and detection unit includes a three-dimensional speckle stereo measurement unit and an imaging jitter correction unit. The three-dimensional speckle stereo measurement unit is used to detect and match multiple deformation speckle images, using a two-dimensional image matching method to complete the correspondence of speckle patterns under different deformations, and then performing a three-dimensional reconstruction to obtain the three-dimensional coordinate data of the best matching point. The imaging jitter correction unit is used to correct the impact of the acquisition device movement on the deformation wing data based on a dynamic external parameter calibration algorithm and the instantaneous position and orientation of the acquisition device.

[0123] The deformation analysis feedback unit is used to analyze the deformed wing data and the standard wing data to obtain the deformation measurement results, as well as the corresponding risk warning information and maintenance recommendation information.

[0124] like Figure 6As shown, the wing deformation measurement system performs a wing deformation measurement method. First, a synchronization pulse control unit synchronizes the time with the internal clock, initializes the time stamp, and synchronously triggers the flash and shutter. The deformation image acquisition unit then captures an image using an acquisition device. The image processing and detection unit then performs three-dimensional reconstruction based on the speckle pattern, calculates extrinsic parameter data for the acquisition device based on standard control points, and addresses the effects of device jitter. Finally, the deformation analysis and feedback unit analyzes the wing deformation data to determine whether the wing is deformed. Feedback is provided based on the deformation measurement results to generate risk warning information and maintenance recommendations.

[0125] An embodiment of the present application also provides an electronic device, which includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by the processor to implement the wing deformation measurement method as described in any of the method embodiments.

[0126] An embodiment of the present application also provides a computer storage medium, which can be set in a server to store at least one instruction, at least one program, code set or instruction set for implementing the method embodiment, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement the wing deformation measurement method as described in any of the method embodiments.

[0127] Alternatively, the computer storage medium may be located in at least one of a plurality of network servers in a computer network. Computer storage media may include, but are not limited to, various media capable of storing program code, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard drive, a magnetic disk, or an optical disk.

[0128] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0129] In the above embodiments, the description of each embodiment has its own focus. For parts not described in detail in one embodiment, please refer to the relevant description of other embodiments. The embodiments, implementation methods and related technical features of this application can be combined and replaced with each other without conflict.

[0130] The above are only preferred embodiments of the present application and are not intended to limit the present application in any form. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application shall still fall within the scope of the technical solution of the present application. The selection of terms used in this article is intended to best explain the principles, practical applications, or technical improvements of each embodiment in the market, or to enable other ordinary technicians in this technical field to understand the embodiments disclosed herein.

Claims

1. A method for measuring wing deformation, characterized in that: The method comprises: performing time calibration on a plurality of acquisition devices, and acquiring a plurality of deformation speckle images of a target wing at different acquisition angles based on the plurality of acquisition devices; performing three-dimensional reconstruction processing on the multiple deformation speckle images to obtain deformed wing data; Based on the deformed wing data and the standard wing data, a deformation measurement result of the target wing is determined.

2. The wing deformation measurement method according to claim 1, characterized in that: Each deformation speckle image corresponds to an acquisition time; The performing three-dimensional reconstruction processing on the plurality of deformation speckle images to obtain deformed wing data includes: determining a plurality of image pairs from the plurality of deformation speckle images based on the acquisition time; performing pixel feature matching on the speckle of each image pair in the plurality of image pairs to obtain a feature matching result; A three-dimensional reconstruction process is performed based on the feature matching result to obtain the deformed wing data.

3. The wing deformation measurement method according to claim 2, characterized in that: The performing of three-dimensional reconstruction based on the feature matching result to obtain the deformed wing data includes: Performing geometric calculations based on the feature matching results and device parameters of the multiple acquisition devices to obtain three-dimensional data information; Based on the three-dimensional data information, the target wing is subjected to three-dimensional reconstruction processing to obtain the deformed wing data.

4. The wing deformation measurement method according to claim 1, characterized in that: A standard control point with a shape variable of 0 is set on the target wing; The method further comprises: Determining external parameter measurement data based on the standard position information of the standard control point and the device position information of the multiple acquisition devices; The deformed wing data is adjusted based on the external parameter standard data and the external parameter measurement data.

5. The wing deformation measurement method according to any one of claims 1 to 4, characterized in that: The method further comprises: Using the multiple acquisition devices to acquire multiple calibration images corresponding to the calibration object; Determining relative position information and relative posture information of the acquisition device relative to the calibration object based on the multiple calibration images; Based on the relative position information and the relative posture information, device parameters of the multiple acquisition devices are adjusted.

6. The wing deformation measurement method according to claim 1, characterized in that: The collecting of multiple deformation speckle images of the target wing at different angles based on the multiple collecting devices includes: An image acquisition instruction is sent to the multiple acquisition devices, so that the lighting units and the shooting units of the multiple acquisition devices are triggered simultaneously at the same acquisition moment, and the multiple deformation speckle images of the target wing are acquired at different acquisition angles.

7. The wing deformation measurement method according to claim 1, characterized in that: The method further comprises: Based on the deformation measurement results, risk warning information and maintenance suggestion information are generated.

8. A wing deformation measuring device, characterized in that: The device comprises: An image acquisition module, configured to perform time calibration on a plurality of acquisition devices and acquire a plurality of deformation speckle images of a target wing at different acquisition angles based on the plurality of acquisition devices; An image processing module, configured to perform three-dimensional reconstruction processing on the plurality of deformation speckle images to obtain deformed wing data; The deformation determination module is used to determine the deformation measurement result of the target wing based on the deformed wing data and the standard wing data.

9. An electronic device, characterized in that: The electronic device includes a processor and a memory, wherein the memory stores at least one instruction and at least one program, and the at least one instruction and the at least one program are loaded and executed by the processor to implement the wing deformation measurement method according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that The computer storage medium stores at least one instruction and at least one program, and the at least one instruction and the at least one program are loaded and executed by the processor to implement the wing deformation measurement method according to any one of claims 1 to 7.

11. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the wing deformation measurement method according to any one of claims 1 to 7 is implemented.

Images