Synchronous measurement method and system for coupling of flexible plant movement and water flow

Abstract

A synchronous measurement method and system for the coupling of movement and water flow in flexible plants is disclosed. The system includes an experimental water tank, a motion measurement device, a water flow measurement device, a synchronous control unit, and an analysis device. The experimental water tank provides a unidirectional, stable, uniform flow with a slope to the flexible plant model based on experimental parameters obtained from analytical experiments. The motion measurement device detects the three-dimensional movement and trajectory of the flexible plant model under the action of the unidirectional, stable, uniform flow. The water flow measurement device captures two-dimensional planar water flow parameters in a preset area within the experimental water tank. The synchronous control unit is connected to both the motion measurement device and the water flow measurement device to synchronously control the data acquisition time of both devices. The analysis device obtains the coupling characteristics of movement and water flow in the flexible plants based on the time correlation analysis of the three-dimensional movement and trajectory with the two-dimensional planar water flow parameters.

Description

Technical Field

[0001] This application relates to the fields of water conservancy and experimental measurement, and in particular to a method and system for synchronous measurement of the coupling between the movement of flexible plants and water flow. Background Technology

[0002] In aquatic environments such as rivers, lakes, and coastal areas, plant movement significantly impacts water flow resistance, disturbance, and flow field structure. For some time, research on the flow dynamics of aquatic plants, both experimental and numerical, has widely employed generalized rigid models to simulate plants. However, most plants, especially aquatic plants, possess a degree of structural flexibility, which determines that underwater plants exhibit motion responses under hydrodynamic forcing. For example, flow separation and vortex shedding can cause plant swaying. This hydrodynamic mechanism of plant movement coupled with surrounding flow is an important engineering problem in the fields of hydraulics and marine engineering.

[0003] The quantification of fluid-structure interaction motion and flow field is central to studying key processes. Specifically, simultaneous measurement of the three-dimensional motion and flow characteristics of flexible plants is crucial. However, due to the significant challenges in simultaneously sampling and quantifying the flow field and plant motion of models simulating real plants, most current experimental schemes can only capture the independent characteristics of a single research object, i.e., flow field features or plant motion behavior. These methods cannot reveal the instantaneous coupling between turbulent structures and plant deformation.

[0004] In summary, traditional measurement systems have the following drawbacks: They lack efficient synchronous detection capabilities: the motion of flexible structures and the flow field are typically measured separately and independently. They lack three-dimensional detection capabilities for flexible structures: particle image velocimetry systems or camera recognition capture are limited to planar motion and cannot capture three-dimensional motion. They lack planar flow velocity measurement: traditional measurements commonly use single-point acoustic Doppler velocimetry, and the combination of planar particle image velocimetry systems and motion imaging is rare. Therefore, it is necessary to design a new measurement system capable of accurately measuring the three-dimensional motion of flexible plants and simultaneously coupling it with two-dimensional planar water flow. Summary of the Invention

[0005] The purpose of this application is to provide a method and system for synchronous measurement of the coupling between the movement of flexible plants and water flow, which simultaneously measures the movement of flexible plants and water flow data, and performs coupled synchronous analysis of the two to achieve comprehensive observation and analysis of the coupling process between the movement of flexible plants and water flow.

[0006] To achieve the above objectives, the synchronous measurement system for the coupling of flexible plant movement and water flow provided in this application specifically includes an experimental water tank, a motion measurement device, a water flow measurement device, a synchronous control unit, and an analysis device. The experimental water tank is used to provide a unidirectional stable uniform flow with a slope to the flexible plant model based on experimental parameters obtained from analytical experimental requirements. The motion measurement device is used to detect the three-dimensional movement and trajectory of the flexible plant model under the action of the unidirectional stable uniform flow. The water flow measurement device is used to capture the two-dimensional planar water flow parameters in a preset area within the experimental water tank. The synchronous control unit is connected to both the motion measurement device and the water flow measurement device, and is used to synchronously control the data acquisition time and frequency of both devices. The analysis device is connected to the synchronous control unit, the motion measurement device, and the water flow measurement device, and is used to obtain the coupling characteristics of flexible plant movement and water flow based on the time correlation analysis of the three-dimensional movement and trajectory and the two-dimensional planar water flow parameters.

[0007] In the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, optionally, the experimental water tank includes a rectifier, an electromagnetic flowmeter, a slope adjustment gear, a centrifugal pump drive device, and an electric tailgate; the rectifier is installed inside the experimental water tank to stabilize and uniformly process the water flow accelerated by the centrifugal pump drive device to generate a stable and uniform flow; the electromagnetic flowmeter is installed on the outlet side of the centrifugal pump drive device to detect the flow rate of the water flow accelerated by the centrifugal pump drive device; the slope adjustment gear is installed under the support platform of the flexible plant model to adjust the fixed slope of the open channel where the flexible plant model is located; the centrifugal pump drive device is installed downstream of the outlet water tank of the experimental water tank to provide a stable flow of water to the upstream inlet water tank; the electric tailgate is installed on the drainage side at the end of the experimental water tank to adjust the water level of the experimental section of the flexible plant model array arrangement by controlling the water flow discharge.

[0008] In the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, optionally, the experimental water tank also includes a water level probe, which is used to detect the water level depth of the flexible plant model.

[0009] In the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, optionally, the motion measurement device includes a positioning frame and at least two sets of imaging modules; the positioning frame is movably mounted on the side and top of the experimental water tank; the two sets of imaging modules are fixed by the positioning frame and are used to collect the flow direction and vertical movement and the flow direction and spanwise movement of the flexible plant model, respectively. Based on the flow direction and vertical movement and the flow direction and spanwise movement, the three-dimensional movement and trajectory of the flexible plant model under the action of unidirectional stable uniform flow are obtained through correction.

[0010] In the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, optionally, the water flow measurement device is a PIV particle image velocimetry system, which includes a CCD high-speed camera and a laser source emitter; the laser source emitter is fixed by the positioning frame and is used to provide a laser source; the CCD high-speed camera is mounted on the structural truss supporting the experimental water tank and is used to collect two-dimensional planar water flow parameters based on the laser source.

[0011] In the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, optionally, the analysis device includes a noise reduction module, a trajectory extraction module, a flow field data extraction module, and a processing module. The noise reduction module is used to correct, reduce noise, filter, and preprocess the received sphere three-dimensional motion video data and flow field data. The trajectory extraction module is used to obtain image data frame by frame from the sphere video data, and to locate the sphere data in the image data using a circular Hough transform accumulator array, and to obtain the sphere trajectory at each time point based on the sphere data. The flow field data extraction module is used to obtain the flow field data at each time point based on the two-dimensional plane flow parameters. The processing module is used to obtain the coupling characteristics of flexible plant movement and water flow based on the temporal correlation analysis of the sphere trajectory and the flow field data.

[0012] In the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, optionally, the trajectory extraction module further includes an adjustment unit connected to the trajectory extraction module, used to compare the sphere trajectory with a preset threshold, adjust the sensitivity of the circular Hough transform accumulator array according to the comparison result, and perform image dilation on the image data.

[0013] This application also provides a measurement method applicable to the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow. The method includes: parsing experimental parameters based on received experimental requirements; providing a unidirectional stable uniform flow with a slope to the flexible plant model based on the experimental parameters; triggering synchronous control through the experimental parameters to acquire the three-dimensional movement and trajectory of the flexible plant model under the action of the unidirectional stable uniform flow, as well as the two-dimensional planar water flow parameters of a preset area within the experimental tank; and obtaining the coupling characteristics of flexible plant movement and water flow based on the time correlation analysis of the three-dimensional movement and trajectory and the two-dimensional planar water flow parameters.

[0014] This application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described method.

[0015] This application also provides a computer-readable storage medium storing a computer program that performs the above-described methods.

[0016] This application also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the above-described method.

[0017] The beneficial technical effects of this application are as follows: It provides comprehensive motion data by measuring and calculating the three-dimensional motion of plants through a dual-camera system. It organically combines multiple measurement methods, such as an experimental water tank, a DSLR camera system, and a PIV particle image velocimetry system, to form an integrated synchronous measurement system. In particular, it can simultaneously measure flexible plant motion and water flow data, and couple and analyze them synchronously, achieving comprehensive observation and analysis of the coupling process between flexible plant motion and water flow. This system can be widely applied in environmental science, water resource management, hydraulic engineering, ecology, and other fields, contributing to a deeper understanding of the complex relationship between flexible plants and water flow, and providing strong support for research in these fields. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, do not constitute a limitation thereof. In the drawings:

[0019] Figure 1A This is a schematic diagram of the principle structure of a synchronous measurement system provided in an embodiment of this application;

[0020] Figure 1B This is a schematic diagram of the application structure of a synchronous measurement system provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the installation structure of the motion measuring device and the water flow measuring device provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a movable positioning frame provided in an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of an analytical device provided in an embodiment of this application;

[0024] Figures 5A to 5F This is a schematic diagram of the data processing flow of the analysis device provided in an embodiment of this application;

[0025] Figure 6 This is a schematic flowchart of a measurement method provided in an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0027] The following will describe in detail the implementation methods of this application with reference to the accompanying drawings and embodiments, so as to fully understand how this application uses technical means to solve technical problems and achieve technical effects, and to implement it accordingly. It should be noted that, as long as there is no conflict, the various embodiments and features in each embodiment of this application can be combined with each other, and the resulting technical solutions are all within the protection scope of this application.

[0028] Furthermore, the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0029] Please refer to Figure 1A As shown, the synchronous measurement system for the coupling of flexible plant movement and water flow provided in this application specifically includes an experimental water tank, a motion measurement device, a water flow measurement device, a synchronous control unit, and an analysis device. The experimental water tank is used to provide a unidirectional stable uniform flow with a slope to the flexible plant model according to the experimental parameters obtained from the analytical experimental requirements. The motion measurement device is used to detect the three-dimensional movement and trajectory of the flexible plant model under the action of the unidirectional stable uniform flow. The water flow measurement device is used to capture the two-dimensional planar water flow parameters of a preset area within the experimental water tank. The synchronous control unit is connected to both the motion measurement device and the water flow measurement device, and is used to synchronously control the data acquisition time and frequency of the motion measurement device and the water flow measurement device. The analysis device is connected to the synchronous control unit, the motion measurement device, and the water flow measurement device, and is used to obtain the coupling characteristics of flexible plant movement and water flow based on the time correlation analysis of the three-dimensional movement and trajectory and the two-dimensional planar water flow parameters. The flexible plant model is constructed by combining multiple simulated leaf clusters in a neat, staggered, or random arrangement based on plant information; the simulated leaf clusters are constructed by connecting the spheres with traction ropes using detailed information of each leaf cluster in the plant.

[0030] In the above embodiments, the synchronous measurement system for the coupling of flexible plant movement and water flow provided in this application achieves precise control of water flow conditions through an experimental water tank system to provide a unidirectional stable and uniform flow with an adjustable slope; the flexible plant movement measurement device measures the three-dimensional movement of the flexible plant, accurately capturing the plant's movement trajectory; the planar particle image velocimetry system acquires relevant data of the two-dimensional planar water flow; the synchronous control unit performs synchronous control of the flexible plant movement measurement device and the water flow measurement device; and the data processing and visualization system processes and visualizes the measured data. The specific structure of each component is detailed in subsequent embodiments and will not be described in detail here.

[0031] Please refer to this again. Figure 1B As shown, in one embodiment of this application, the experimental water tank includes a rectifier 11, an electromagnetic flowmeter 15, a slope adjustment gear 17, a centrifugal pump drive device 14, and an electric tailgate 13. The rectifier 11 is disposed within the experimental water tank and is used to stably and uniformly process the water flow accelerated by the centrifugal pump drive device 14 to generate a stable and uniform flow. The electromagnetic flowmeter 15 is disposed on the outlet side of the centrifugal pump drive device 14 and is used to detect the flow rate of the water flow accelerated by the centrifugal pump drive device 14. The slope adjustment gear 17 is disposed under the support platform of the flexible plant model 19 and is used to adjust the fixed slope of the open channel where the flexible plant model 19 is located. The centrifugal pump drive device 14 is disposed downstream of the outlet water tank of the experimental water tank and is used to provide a stable flow of water to the upstream inlet water tank. The electric tailgate 13 is disposed on the drainage side at the end of the experimental water tank and is used to adjust the water level of the experimental section of the flexible plant model array arrangement by controlling the water flow discharge. The experimental water tank may also include a water level probe, which is used to detect the water depth at the location of the flexible plant model. A water level probe can effectively determine the water level depth, which can be used to verify the realization and stability of unidirectional uniform flow.

[0032] The experimental water tank also includes a water level probe used to detect the water depth of the flexible plant model. Specifically, in practical applications, the experimental water tank can be 16m × 0.5m × 0.5m in size, and includes a rectifier 11, a water level probe 12, an electric tailgate 13, a centrifugal pump 14, an electromagnetic flowmeter 15, an inlet water tank 16, a slope adjustment gear 17, an outlet water tank 18, an experimental plant model 19, and a control system 110. The inlet water tank 16 is the water inlet, and the control system 110 is mainly used to control the centrifugal pump 14 to accelerate the circulating water in the experimental water tank according to received control commands. Overall, the experimental water tank, through multiple components such as the rectifier, water level monitor, electromagnetic flowmeter, slope adjustment gear, centrifugal pump drive system, and tailgate, achieves precise control of water flow conditions to provide a stable, uniform, unidirectional flow with a slope as required.

[0033] In one embodiment of this application, the motion measurement device includes a positioning frame and at least two sets of imaging modules; the positioning frame is movably mounted on the side and top of the experimental water tank; the two sets of imaging modules are fixed by the positioning frame and are used to collect the flow direction and vertical motion and the flow direction and longitudinal motion of the flexible plant model, respectively. Based on the flow direction and vertical motion and the flow direction and longitudinal motion, the three-dimensional motion and motion trajectory of the flexible plant model under the action of unidirectional stable uniform flow are obtained through correction.

[0034] Specifically, in practical work, the motion measurement device consists of two cameras and a positioning frame. This device is used to measure the three-dimensional motion of flexible plants, including their deformation, displacement and vibration, and can accurately capture the movement trajectory of the plants.

[0035] In another embodiment of this application, the water flow measuring device is a PIV particle image velocimetry system, which includes a CCD high-speed camera and a laser source emitter; the laser source emitter is fixed by the positioning frame and is used to provide a laser source; the CCD high-speed camera is mounted on the structural truss supporting the experimental water tank and is used to collect two-dimensional planar water flow parameters based on the laser source.

[0036] Specifically, in practical operation, the water flow measurement device consists of a planar particle image velocimetry system. This device is used to capture the flow field in the measurement area to obtain relevant data on the two-dimensional planar water flow. The overall structure of the motion measurement device and the water flow measurement device can be found in [reference needed]. Figure 2 As shown, the system includes dual cameras 21 and 22; a CCD high-speed camera 31; and a laser light source 32. The four devices are synchronized via synchronous controllers 41 and 42. Camera 21 records the flow direction and vertical movement of the plants, while camera 22 detects the flow direction and longitudinal movement. Both are uniformly corrected using the flow direction movement data to achieve three-dimensional motion reconstruction. In this structure, side-viewing devices 21 and 31 are mounted on the structural truss 24, while top-viewing devices 22 and 32 are mounted on a movable positioning frame 23. The movable positioning frame can be moved and positioned on a circular guide rail 25 on the water tank. The movable positioning frame is as follows... Figure 3 As shown, the system includes four pulleys 51, two connecting shafts 52, four columns 53, a mounting beam 54, and a camera gimbal 55. The pulleys 51 are respectively mounted in pre-set grooves on the top of the experimental water tank to facilitate radial movement of the positioning frame. The connecting shafts 52 maintain the synchronization and stability of the pulleys 51. The columns 53 support the entire mounting beam 54, and the camera gimbal 55 is fixed to the mounting beam 54. The overhead viewing devices 22 and 32 are mounted on the camera gimbal 55 to achieve image acquisition and positioning.

[0037] Please refer to Figure 4 As shown in one embodiment of this application, the analysis device includes a noise reduction module, a trajectory extraction module, a flow field data extraction module, and a processing module. The noise reduction module is used to correct, reduce noise, filter, and preprocess the received sphere three-dimensional motion video data and flow field data. The trajectory extraction module is used to obtain image data frame by frame from the sphere video data, locate the sphere data in the image data through a circular Hough transform accumulator array, and obtain the sphere trajectory at each time point based on the sphere data. The flow field data extraction module is used to obtain flow field data at each time point based on the two-dimensional plane water flow parameters. The processing module is used to obtain the coupling characteristics of flexible plant movement and water flow based on the temporal correlation analysis of the sphere trajectory and the flow field data. The trajectory extraction module further includes an adjustment unit connected to the trajectory extraction module, used to compare the sphere trajectory with a preset threshold, adjust the sensitivity of the circular Hough transform accumulator array based on the comparison result, and perform image dilation on the image data.

[0038] In practical work, the analysis device can adopt data processing methods based on MATLAB calculation software, specifically including post-processing operations such as data noise reduction (images), extraction of the motion trajectory of a circular ball, extraction of flow field data, and data filtering.

[0039] First, the image is scaled and lens distortion corrected, refer to... Figure 5A .

[0040] Tracking the trajectory of the ball requires three steps: First, the video clip is cropped frame by frame into images, then the images are converted to grayscale and stretched. Next, median filtering is performed to obtain the median of the appropriate neighborhood size for each pixel. Then, a circular Hough transform accumulator array is applied to find the circle in the image, adjusting the sensitivity and radius range of the function for different situations, referring to... Figure 5B .

[0041] In the above embodiments, the key challenge in detection lies in whether a particle partially or completely overlaps with surrounding particles. To address this, this application provides corresponding solutions for two different flow conditions where this situation may occur. Specifically:

[0042] For low flow rates, particles from the same plant partially overlap; by setting higher sensitivity for the circular Hough transform accumulator array, they can be detected individually, as referenced. Figure 5C ;

[0043] On the other hand, for high flow rates, the bottom particles may be obscured by the top particles of adjacent upstream plants; when half of the bottom particles are obscured, image dilation can be performed on the image before further detection, as shown in the reference. Figure 5D .

[0044] However, in rare cases, the bottom ball may be mostly or completely obscured, which is difficult to detect. The position of the obscured ball can be linearly interpolated from the position data of the ball at adjacent time points, referencing... Figure 5E The results of the plant tracking algorithm for flexible plant communities obtained using the above method can be referenced. Figure 5F As shown.

[0045] Please refer to Figure 6 As shown, this application also provides a measurement method applicable to the aforementioned synchronous measurement system for the coupling of flexible plant movement and water flow, the method comprising:

[0046] S601 parses the received experimental requirements to obtain experimental parameters, and provides a unidirectional stable uniform flow with a slope to the flexible plant model according to the experimental parameters.

[0047] S602 triggers synchronous control through the experimental parameters to collect the three-dimensional motion and trajectory of the flexible plant model under the action of unidirectional stable uniform flow, as well as the two-dimensional planar water flow parameters of the preset area in the experimental water tank.

[0048] S603 obtains the coupling characteristics of flexible plant movement and water flow based on the time correlation analysis of the three-dimensional motion and trajectory with the two-dimensional planar water flow parameters. The specific implementation logic of each process has been described in detail in the foregoing embodiments, and will not be described in detail here.

[0049] The beneficial technical effects of this application are as follows: It provides comprehensive motion data by measuring and calculating the three-dimensional motion of plants through a dual-camera system. It organically combines multiple measurement methods, such as an experimental water tank, a DSLR camera system, and a PIV particle image velocimetry system, to form an integrated synchronous measurement system. In particular, it can simultaneously measure flexible plant motion and water flow data, and couple and analyze them synchronously, achieving comprehensive observation and analysis of the coupling process between flexible plant motion and water flow. This system can be widely applied in environmental science, water resource management, hydraulic engineering, ecology, and other fields, contributing to a deeper understanding of the complex relationship between flexible plants and water flow, and providing strong support for research in these fields.

[0050] This application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described method.

[0051] This application also provides a computer-readable storage medium storing a computer program that performs the above-described methods.

[0052] This application also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the above-described method.

[0053] like Figure 7 As shown, the electronic device 600 may also include: a communication module 110, an input unit 120, an audio processor 130, a display 160, and a power supply 170. It is worth noting that the electronic device 600 does not necessarily need to include these components. Figure 7 All components shown; in addition, the electronic device 600 may also include Figure 7 For components not shown, please refer to existing technologies.

[0054] like Figure 7 As shown, the central processing unit 100, sometimes also referred to as a controller or operating control, may include a microprocessor or other processor device and / or logic device. The central processing unit 100 receives inputs and controls the operation of various components of the electronic device 600.

[0055] The memory 140 may be, for example, one or more of a cache, flash memory, hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It may store the aforementioned failure-related information, and also store a program for executing that information. The central processing unit 100 may execute the program stored in the memory 140 to perform information storage or processing, etc.

[0056] Input unit 120 provides input to central processing unit 100. Input unit 120 may be, for example, a keypad or touch input device. Power supply 170 provides power to electronic device 600. Display 160 displays images and text. Display may be, for example, an LCD display, but is not limited thereto.

[0057] The memory 140 can be a solid-state memory, such as a read-only memory (ROM), random access memory (RAM), a SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and contains more data; examples of this type of memory are sometimes referred to as EPROMs. The memory 140 can also be some other type of device. The memory 140 includes a buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application / function storage unit 142 for storing application programs and function programs or processes for executing the operation of the electronic device 600 via the central processing unit 100.

[0058] The memory 140 may also include a data storage unit (data 143) for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit (driver 144) of the memory 140 may include various drivers for the electronic device's communication functions and / or for performing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0059] The communication module 110 is a transmitter / receiver 110 that transmits and receives signals via antenna 111. The communication module (transmitter / receiver) 110 is coupled to the central processing unit 100 to provide input signals and receive output signals, which can be the same as in a conventional mobile communication terminal.

[0060] Based on different communication technologies, multiple communication modules 110 can be configured in the same electronic device, such as cellular network modules, Bluetooth modules, and / or wireless LAN modules. The communication module (transmitter / receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and receive audio input from the microphone 132, thereby enabling typical telecommunications functions. The audio processor 130 may include any suitable buffer, decoder, amplifier, etc. Additionally, the audio processor 130 is coupled to a central processing unit 100, enabling on-device recording via the microphone 132 and on-device playback of stored audio via the speaker 131.

[0061] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0062] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0063] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0064] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0065] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A synchronous measurement system for the coupling of flexible plant movement and water flow, characterized in that, The system includes an experimental water tank, a motion measuring device, a water flow measuring device, a synchronization control unit, and an analysis device; The experimental water tank is used to provide a unidirectional, stable, and uniform flow with a slope to the flexible plant model based on the experimental parameters obtained from the analytical experimental requirements. The motion measurement device is used to detect the three-dimensional motion and trajectory of the flexible plant model under the action of a unidirectional stable uniform flow. The water flow measuring device is used to capture two-dimensional planar water flow parameters in a preset area within the experimental water tank. The synchronization control unit is connected to the motion measuring device and the water flow measuring device respectively, and is used to synchronously control the data acquisition time and frequency of the motion measuring device and the water flow measuring device; The analysis device is connected to the synchronization control unit, the motion measurement device and the water flow measurement device respectively, and is used to obtain the coupling characteristics of flexible plant movement and water flow based on the time correlation analysis of the three-dimensional motion and motion trajectory and the two-dimensional plane water flow parameters; The experimental water tank includes a water tank, a rectifier, an electromagnetic flow meter, a slope adjustment gear, a centrifugal pump drive device, and an electric tailgate. The rectifier is installed in the experimental water tank to stabilize and uniformly process the water flow accelerated by the centrifugal pump drive device to generate a stable and uniform flow. The electromagnetic flowmeter is installed on the outlet side of the centrifugal pump drive device and is used to detect the flow rate of the water accelerated by the centrifugal pump drive device. The slope adjustment gear is installed under the support platform of the flexible plant model and is used to adjust the fixed slope of the open channel where the flexible plant model is located. The centrifugal pump drive device is located downstream of the outlet water tank of the experimental water tank, and is used to provide a stable flow of water to the upstream inlet water tank. The electric tailgate is located at the end of the experimental water tank on the drainage side, and is used to adjust the water level of the experimental section of the flexible plant model arrangement by controlling the water flow.

2. The synchronous measurement system for the coupling of flexible plant movement and water flow according to claim 1, characterized in that, The experimental water tank also includes a water level probe, which is used to detect the water depth of the flexible plant model.

3. The synchronous measurement system for the coupling of flexible plant movement and water flow according to claim 1, characterized in that, The motion measurement device includes a positioning frame and at least two sets of imaging modules; The positioning frame is movably mounted on the side and top of the experimental water tank; The two sets of imaging modules are fixed by the positioning frame and are used to collect the flow direction and vertical movement and the flow direction and longitudinal movement of the flexible plant model, respectively. Based on the flow direction and vertical movement and the flow direction and longitudinal movement, the three-dimensional movement and movement trajectory of the flexible plant model under the action of unidirectional stable uniform flow are obtained through correction.

4. The synchronous measurement system for the coupling of flexible plant movement and water flow according to claim 3, characterized in that, The water flow measuring device is a PIV particle image velocimetry system, which includes a CCD high-speed camera and a laser light source emitter. The laser source emitter is fixed by the positioning frame and is used to provide a laser source; The CCD high-speed camera is mounted on the structural truss supporting the experimental water tank and is used to collect two-dimensional planar water flow parameters based on the laser light source.

5. The synchronous measurement system for the coupling of flexible plant movement and water flow according to claim 1, characterized in that, The analysis device includes a noise reduction module, a trajectory extraction module, a flow field data extraction module, and a processing module; The noise reduction module is used to correct, reduce noise, filter, and preprocess the received 3D motion video data of the sphere and the flow field data. The trajectory extraction module is used to obtain image data frame by frame from the sphere video data, to locate the sphere data in the image data by transforming it with a circular Hough transform accumulator array, and to obtain the sphere trajectory at each time point based on the sphere data. The flow field data extraction module is used to obtain flow field data at various times based on the two-dimensional plane flow parameters; The processing module is used to obtain the coupling characteristics of flexible plant movement and water flow based on the time correlation analysis of the sphere trajectory and the flow field data.

6. The synchronous measurement system for the coupling of flexible plant movement and water flow according to claim 5, characterized in that, The trajectory extraction module further includes an adjustment unit connected to the trajectory extraction module. The adjustment unit is used to compare the trajectory of the sphere with a preset threshold, adjust the sensitivity of the circular Hough transform accumulator array according to the comparison result, and perform image dilation on the image data.

7. A measurement method applicable to any one of claims 1 to 6 for a synchronous measurement system of flexible plant movement and water flow coupling, characterized in that, The method includes: The experimental parameters are obtained by parsing the received experimental requirements, and a unidirectional stable uniform flow with a slope is provided to the flexible plant model according to the experimental parameters. The experimental parameters trigger synchronous control to collect the three-dimensional motion and trajectory of the flexible plant model under unidirectional stable uniform flow, as well as the two-dimensional planar water flow parameters of the preset area in the experimental water tank. The coupling characteristics of flexible plant movement and water flow are obtained based on the time correlation analysis of the three-dimensional motion and trajectory and the two-dimensional planar water flow parameters.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor implements the method of claim 7 when executing the computer program.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that enables a computer to perform the method of claim 7.

10. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method of claim 7.

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