Equipment integration method and system based on cavitation and cavitation effect collection and analysis

Abstract

The invention discloses an equipment integration method and system based on cavitation and cavitation effect collection and analysis, and relates to the technical field of equipment integration, and the method comprises the steps: obtaining the IP address of each piece of equipment, the corresponding communication parameters of each piece of equipment and a collection computer, and the equipment parameters of each piece of equipment; configuring an IP address, a communication parameter and an equipment parameter on the acquisition computer by using a local area network management tool; obtaining software development kits corresponding to the devices, obtaining starting programs corresponding to the software development kits, and integrating the starting programs; and setting a device synchronous starting script to enable each device to start collection at the same time. The device is used for solving the problems of long time consumption, low efficiency and the like of cavitation effect test and analysis due to mutual independence of equipment during cavitation effect test and analysis in the prior art, and equipment integration and synchronous acquisition are realized, so that the efficiency and the effect of cavitation measurement and cavitation effect analysis are improved; and data which is more beneficial to cavitation and cavitation effect research can be obtained.

Description

Technical Field

[0001] The present application relates to the technical field of equipment integration, and in particular to an equipment integration method and system based on cavitation and cavitation effect collection and analysis. Background Art

[0002] As the power and speed of modern ships increase, the requirements for reducing noise, improving concealment and comfort are more stringent, which has brought the requirements for reducing propeller cavitation and attached cavitation volume and increasing the ship cavitation starting speed into a new stage in the ship design process. The surge in ship cavitation noise caused by high speed and the low critical speed have gradually been exposed, which has had a significant impact on the fleet's sonar detection and self-concealment combat capabilities.

[0003] The research on ship cavitation is generally divided into theoretical analysis, numerical calculation, model test and real ship test. Since the nature of cavitation itself is very complex, although the current theoretical analysis and numerical calculation have played a considerable role in the design optimization stage, it is still necessary to conduct model tests for design optimization verification and real ship prediction. However, the Reynolds number of the model test is 10 6 The Reynolds number of a real ship is 10 9 There is usually a so-called "scale effect" between the model test results and the actual results of the actual ship. It can only be achieved through correlation analysis and research on a large amount of actual ship data and model test results, and continuous correction of the prediction method of model test results to improve the accuracy of model test prediction of actual ship cavitation performance.

[0004] When conducting actual ship tests, the various devices involved are independent of each other and unrelated to each other, and each device corresponds to one or more acquisition computers to collect the required data. Since different acquisition computers control different devices to collect different types of data, and the devices cannot be synchronized, the collected data poses a dilemma for cavitation effect analysis, resulting in problems such as long time consumption, low efficiency and poor effect of cavitation effect analysis. Summary of the invention

[0005] In response to the above-mentioned problems and technical needs, the applicant has proposed an equipment integration method and system based on cavitation and cavitation effect collection and analysis, so as to solve the problems of long time, low efficiency and poor effect of cavitation effect analysis caused by the independence of various devices in the prior art when performing cavitation effect analysis, and to achieve equipment integration to improve the efficiency and effect of cavitation effect analysis.

[0006] The present application embodiment provides a device integration method based on cavitation and cavitation effect collection and analysis, which is applied to a collection computer. The method includes:

[0007] Obtaining the IP address of each device, the communication parameters corresponding to each device and the acquisition computer, and the device parameters of each device, wherein the devices include: a high-frequency data collector for collecting ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, a high-speed camera for photographing propellers, a network camera for photographing brackets and wooden attachments, and a watertight camera for photographing the bulbous bow;

[0008] Using a local area network management tool to configure the IP address, the communication parameters and the device parameters on the acquisition computer;

[0009] Obtaining a software development kit corresponding to each device, and obtaining a startup program corresponding to each software development kit, wherein each startup program is used to instruct the high-frequency data collector to collect the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by the cavitation, the high-speed camera to take a propeller cavitation image, the network camera to take a hull bracket and wooden appendage cavitation image, and the watertight camera to take a bulbous bow cavitation image;

[0010] A device synchronous startup script is set to enable each device to start acquisition at the same time, wherein the synchronous startup script is used to instruct the startup programs of each software development kit to be triggered at the same time.

[0011] According to the device integration method based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the method also includes:

[0012] An image upload script is set up and the image upload duration is configured, wherein the image upload script is used to instruct the high-speed camera to upload the captured cavitation image to the acquisition computer at time intervals of the image upload duration, and to clear the cavitation image in the local memory after uploading.

[0013] According to the device integration method based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the method also includes:

[0014] Setting up a first data analysis script;

[0015] Wherein, the first data analysis script includes: a first data analysis method;

[0016] The first data analysis script is used to instruct to analyze the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation based on the first data analysis method to obtain real-time frequency domain data; and analyze the real-time frequency domain data and the propeller cavitation image obtained synchronously to obtain a first analysis result;

[0017] The first analysis result represents the cavitation area change information and the cavitation volume change information at the propeller under the working conditions corresponding to the ship operating parameters.

[0018] According to the device integration method based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the method also includes:

[0019] Setting up a second data analysis script;

[0020] Wherein, the second data analysis script includes: a second data analysis method;

[0021] The second analysis script is used to instruct to analyze the propeller cavitation image, the hull bracket and wooden appendage cavitation image and the bulbous bow cavitation image synchronously obtained based on the second data analysis method to obtain a second analysis result;

[0022] The second analysis result includes: cavitation area change information and cavitation volume change information corresponding to the ship.

[0023] According to the device integration method based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the method also includes:

[0024] Set up the third data analysis script;

[0025] Wherein, the third data analysis script includes: a third data analysis method;

[0026] The third data analysis script is used to instruct to analyze the ship operation parameters synchronously obtained based on the third data analysis method, the vibration signal, noise signal and pulsating pressure signal generated by cavitation, the hull bracket and wooden appendage cavitation image and the bulbous bow cavitation image, and obtain a third analysis result;

[0027] Wherein, the third analysis result includes: the cavitation area change information and the cavitation volume change information of the hull and the bulbous bow under the working conditions corresponding to the ship operation parameters.

[0028] According to the device integration method based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the method also includes:

[0029] Setting up a fourth data analysis script;

[0030] The fourth data analysis script is used to instruct the aggregation of the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

[0031] According to the device integration method based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the device parameters are configured on the collection computer using a local area network management tool, including:

[0032] Configuring first device parameters of the high-frequency data collector, wherein the first device parameters include: channel name, channel sampling rate and channel filtering, wherein one channel includes multiple sensors;

[0033] The second device parameters of the high-speed camera are configured, wherein the second device parameters include: sampling frequency, sampling interval and image pixels.

[0034] The embodiment of the present application also provides an equipment integration system based on cavitation and cavitation effect collection and analysis, the system comprising: a collection computer, a high-frequency data collector, a high-speed camera, a network camera and a watertight camera;

[0035] The high-frequency data collector, the high-speed camera, the network camera and the watertight camera are respectively connected to the acquisition computer for communication;

[0036] The high-frequency data collector is used to collect ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, and send the collected ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation to the collection computer;

[0037] The high-speed camera is used to photograph the propeller to obtain a propeller cavitation image, and send the propeller cavitation image to the acquisition computer;

[0038] The network camera is used to photograph the stent and the vacuoles of the woody plant, obtain images of the stent and the vacuoles of the woody plant, and send the images of the stent and the vacuoles of the woody plant to the acquisition computer;

[0039] The watertight camera is used to photograph the bulbous bow, obtain the bulbous bow cavitation image, and send the bulbous bow cavitation image to the acquisition computer;

[0040] The acquisition computer is used to obtain and configure the IP address of each device, the communication parameters corresponding to each device and the acquisition computer, and the device parameters of each device; obtain the software development kit corresponding to each device, and obtain the startup program corresponding to each software development kit; set the device synchronization startup script so that each device starts the acquisition at the same time;

[0041] Among them, each startup program is used to instruct the high-frequency data collector to collect the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation, the high-speed camera to take the propeller cavitation image, the network camera to take the hull bracket and wooden appendage cavitation image, and the watertight camera to take the bulbous bow cavitation image; the synchronous startup script is used to instruct the startup program of each software development kit to be triggered simultaneously.

[0042] According to the device integration system based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the collection computer is also used to set a first data analysis script, a second data analysis script, a third data analysis script and a fourth analysis script;

[0043] The first data analysis script includes: a first data analysis method, the first data analysis script is used to instruct to analyze the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation based on the first data analysis method to obtain real-time frequency domain data; and analyze the real-time data and the synchronously obtained propeller cavitation image to obtain a first analysis result;

[0044] Wherein, the second data analysis script includes: a second data analysis method, the second analysis script is used to instruct to analyze the propeller cavitation image, the hull bracket and wooden appendage cavitation image and the bulbous bow cavitation image synchronously obtained based on the second data analysis method to obtain a second analysis result, wherein the second analysis result includes: cavitation area change information and cavitation volume change information;

[0045] The third data analysis script includes: a third data analysis method, the third data analysis script is used to indicate that the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by the cavitation, the hull bracket and the wooden appendage cavitation image and the bulbous bow cavitation image synchronously obtained by analyzing the third data analysis method to obtain a third analysis result;

[0046] The fourth data analysis script is used to instruct the aggregation of the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

[0047] According to the equipment integration system based on cavitation and cavitation effect collection and analysis provided by the embodiment of the present application, the high-frequency data collector includes: a vibration sensor, a hydrophone, an amplifier, a speed collector, a torque collector and a phase collector.

[0048] The device integration method and system based on cavitation and cavitation effect collection and analysis provided in the embodiment of the present application obtains the IP address of each device, the communication parameters corresponding to each device and the collection computer, and the device parameters of each device, wherein the devices include: a high-frequency data collector for collecting ship operating parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, a high-speed camera for photographing propellers, a network camera for photographing the hull and a watertight camera for photographing the bulbous bow; uses a local area network management tool to configure the IP address, communication parameters and device parameters on the collection computer to realize the interconnection between each device and the collection computer, because each device is independent of each other and multiple collection computers are required; obtains the software development kit corresponding to each device, and obtains the startup program corresponding to each software development kit Program, wherein each startup program is used to instruct the high-frequency data collector to collect ship operating parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, the high-speed camera to take propeller cavitation images, the network camera to take hull bracket and wooden appendage cavitation images, and the watertight camera to take bulbous bow cavitation images; set the equipment synchronization startup script to enable each device to start the acquisition at the same time. It can be seen that this application controls the startup programs of each software development kit to be triggered simultaneously by executing the synchronization startup script to start each device at the same time, thereby realizing the synchronization of data acquisition of each device, and then realizing cavitation effect analysis based on one acquisition computer using the data synchronously collected by each device, solving the problem of long time and low efficiency of cavitation effect analysis, realizing equipment integration, and improving the efficiency and effect of cavitation effect analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 This is one of the flow diagrams of the device integration method based on cavitation and cavitation effect collection and analysis provided in the embodiment of the present application;

[0051] Figure 2 This is the second flow chart of the device integration method based on cavitation and cavitation effect collection and analysis provided in the embodiment of the present application;

[0052] Figure 3 It is a structural schematic diagram of an equipment integration system based on cavitation and cavitation effect collection and analysis provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, 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 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 are within the scope of protection of the present invention.

[0054] The present application embodiment provides a device integration method based on cavitation and cavitation effect collection and analysis, which is applied to a collection computer, such as Figure 1 As shown, the method includes:

[0055] Step 101, obtaining the IP address of each device, the communication parameters corresponding to each device and the collection computer, and the device parameters of each device.

[0056] The equipment includes: a high-frequency data collector for collecting ship operating parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, a high-speed camera for photographing propellers, a network camera for photographing the hull, and a watertight camera for photographing the bulbous bow.

[0057] Step 102, using a local area network management tool to configure an IP address, communication parameters, and device parameters on the acquisition computer.

[0058] Step 103, obtaining the software development kit corresponding to each device, and obtaining the startup program corresponding to each software development kit.

[0059] Among them, each startup program is used to instruct the high-frequency data collector to collect the ship's operating parameters and the vibration signals, noise signals and pulsating pressure signals generated by cavitation, the high-speed camera to take the propeller cavitation image, the network camera to take the bracket and wooden appendage cavitation image, and the watertight camera to take the bulbous bow cavitation image.

[0060] Step 104, setting a device synchronization startup script so that each device starts collection at the same time.

[0061] The synchronous startup script is used to instruct the startup programs of each software development kit to be triggered simultaneously.

[0062] Among them, ship operating parameters include: speed, torque, phase signal, etc.

[0063] Among them, communication parameters are specific attributes of information transmitted between each device and the acquisition computer, including: description information of the data uploaded by the device and parameters of the acquisition computer to control information transmission, such as baud rate, data bit, stop bit, interface type, port number and communication protocol.

[0064] Among them, the high-frequency data collector includes: a collector for collecting data with a frequency greater than a preset frequency. The preset frequency can be set by the user according to his or her actual needs, and this application does not impose any restrictions.

[0065] High-speed cameras convert digital image acquisition targets into image signals and transmit them to dedicated image processing systems. Compared with ordinary cameras, high-speed cameras have higher image stability, higher transmission capacity and higher anti-interference ability.

[0066] The network camera takes real-time photos of the attached body to obtain the attached body vacuolar image.

[0067] Watertight cameras include: cameras whose structures and components remain waterproof under a certain water pressure after being immersed in water.

[0068] The device integration method and system based on cavitation and cavitation effect collection and analysis provided in the embodiment of the present application obtain the IP address of each device, the communication parameters corresponding to each device and the collection computer, and the device parameters of each device, wherein the devices include: a high-frequency data collector for collecting ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, a high-speed camera for photographing propellers, a network camera for photographing ship brackets and wooden attached cavitations, and a watertight camera for photographing bulbous bows; use a local area network management tool to configure the IP address, communication parameters and device parameters on the collection computer to realize the interconnection between each device and the collection computer, because each device is independent of each other and requires multiple collection computers; obtain the software development kit corresponding to each device, and obtain the software development kit of each device. The startup programs corresponding to the packages are used to instruct the high-frequency data collector to collect the ship's operating parameters and the vibration signals, noise signals and pulsating pressure signals generated by the cavitation, the high-speed camera to take the propeller cavitation image, the network camera to take the bracket and the wooden appendage cavitation image, and the watertight camera to take the bulbous bow cavitation image; the equipment synchronization startup script is set to enable each device to start the acquisition at the same time. It can be seen that the present application controls the startup programs of each software development package to be triggered simultaneously by executing the synchronization startup script to start each device at the same time, thereby realizing the synchronization of data acquisition of each device. Furthermore, based on one acquisition computer, the cavitation effect analysis is performed using the data synchronously collected by each device, which solves the problem of long time and low efficiency of cavitation effect analysis, realizes equipment integration, and improves the efficiency and effect of cavitation effect analysis.

[0069] In a specific embodiment, the specific implementation of configuring device parameters on the acquisition computer using the local area network management tool includes:

[0070] Configure the first device parameters of the high-frequency data collector; configure the second device parameters of the high-speed camera.

[0071] The first device parameter includes: channel name, channel sampling rate and channel filtering, wherein one channel includes multiple sensors.

[0072] The second device parameters include: sampling frequency, sampling interval and image pixels.

[0073] Specifically, for network cameras and watertight cameras, only the opening and closing functions need to be configured.

[0074] In a specific embodiment, the method further includes: setting a first data analysis script.

[0075] Wherein, the first data analysis script includes: a first data analysis method.

[0076] Among them, the first data analysis script is used to indicate that the ship operating parameters and the vibration signals, noise signals and pulsating pressure signals generated by cavitation are analyzed based on the first data analysis method to obtain real-time frequency domain data; and the real-time data and the synchronously obtained propeller cavitation image are analyzed to obtain the first analysis result.

[0077] The first analysis result represents the cavitation area change information and the cavitation volume change information of the propeller under the working conditions corresponding to the ship operation parameters.

[0078] Specifically, the vibration signal, noise signal and pulsating pressure signal generated by cavitation are processed by fast Fourier transform to obtain real-time frequency domain data. In the frequency domain, the signal is represented as a superposition of different frequency components, and the amplitude and phase of each frequency component can describe the frequency characteristics of the signal.

[0079] The propeller cavitation image is subjected to image enhancement, denoising and feature extraction, and the edge features of the cavitation image are extracted to calculate the area and volume. The change rate of the cavitation area and volume is analyzed to obtain the first analysis result.

[0080] In a specific embodiment, the method further includes: setting a second data analysis script.

[0081] Wherein, the second data analysis script includes: a second data analysis method.

[0082] Among them, the second analysis script is used to instruct to analyze the propeller cavitation image, the bracket and wooden appendage cavitation image and the bulbous bow cavitation image obtained synchronously based on the second data analysis method to obtain the second analysis result.

[0083] The second analysis result includes: cavitation area change information and cavitation volume change information corresponding to the ship motion parameters.

[0084] Specifically, frequency domain analysis is performed on propeller cavitation images, hull bracket and wooden appendage cavitation images, and bulbous bow cavitation images. For example, image enhancement, denoising, and feature extraction are used to extract edge features of cavitation for area and volume calculation, and the change rate of cavitation area and volume is analyzed.

[0085] The features of the propeller cavitation image, the features of the hull bracket and wooden appendage cavitation image, and the features of the bulbous bow cavitation image are integrated to obtain the second analysis result.

[0086] In a specific embodiment, the method further includes: setting a third data analysis script.

[0087] Among them, the third data analysis script includes: a third data analysis method.

[0088] Among them, the third data analysis script is used to indicate that the ship operation parameters and the vibration signals, noise signals and pulsating pressure signals generated by cavitation, the cavitation images of the hull support and wooden appendages, and the cavitation images of the bulbous bow are analyzed synchronously based on the third data analysis method to obtain the third analysis results.

[0089] Among them, the third analysis result includes: under the working conditions corresponding to the ship operation parameters, the cavitation area change information and cavitation volume change information of the hull support and wooden appendage cavitation and the bulbous bow.

[0090] Specifically, the ship operating parameters are processed by averaging to obtain the ship operating conditions.

[0091] Specifically, the cavitation images of the hull support and wooden appendages and the bulbous bow are respectively enhanced, denoising and feature extraction are performed, the edge features of the cavitation are extracted to calculate the area and volume, and the change rate of the cavitation area and volume is analyzed.

[0092] The features of the cavitation images of the hull support and the wooden appendages and the features of the cavitation image of the bulbous bow are fused together with the above-mentioned frequency features to obtain the third analysis result.

[0093] In a specific embodiment, the method further includes: setting a fourth data analysis script.

[0094] Among them, the fourth data analysis script is used to instruct the aggregation of the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

[0095] In a specific embodiment, the method further includes: setting an image upload script and configuring the image upload duration.

[0096] The image upload script is used to instruct the high-speed camera to upload the captured cavitation images to the acquisition computer at a time interval equal to the image upload duration, and to clear the cavitation images in the local memory after uploading.

[0097] Next, through Figure 2 The following is a detailed description of this application:

[0098] Step 201, obtain the IP address of each device, set communication parameters based on the IP address to allocate a local area network address to each device, and configure device parameters of each device.

[0099] Step 202, obtain the software development kit of each device, and set up synchronous collection and data storage functions.

[0100] Step 203, acquiring, storing and displaying the ship operation parameters collected by the high-frequency data collector, the propeller cavitation images taken by the high-speed camera, the hull bracket and wooden appendage cavitation images taken by the network camera, and the bulbous bow cavitation images taken by the watertight camera.

[0101] Among them, it is also necessary to obtain the vibration signal, noise signal and pulsating pressure signal generated by the storage cavitation.

[0102] Step 204, analyze the ship operation parameters and the propeller cavitation image to obtain a first analysis result, the propeller cavitation image, the hull support and wooden appendage cavitation image and the bulbous bow cavitation image to obtain a second analysis result, and the ship operation parameters, the hull support and wooden appendage cavitation image and the bulbous bow cavitation image to obtain a third analysis result.

[0103] Among them, it is also necessary to analyze the vibration signal, noise signal and pulsating pressure signal generated by cavitation.

[0104] Step 205, summarizing the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

[0105] In addition, the configuration of the device can be achieved by creating a class. For example, define the class name as LanXiHelper. The data exchange and communication between the acquisition computer and each device is realized through the LanXiHelper class. The LanXiHelper class includes: IP, which is used to manage the IP addresses of different devices, and is used to load the device, and connect each device by setting the same IP address as the device. The LanXiHelper class also includes: communication parameters, which are used for communication between different devices. The LanXiHelper class also includes device parameters, which are used to configure the device parameters of each device.

[0106] This application integrates and synchronizes various devices, and controls the corresponding acquisition software of each device to ensure the simultaneous control of each device, so as to achieve the synchronous acquisition of data through a single computer. At the same time, by setting synchronous start and end switches for different types of equipment, the purpose of synchronous acquisition is achieved. That is, the synchronous sampling of ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, propeller cavitation images, hull bracket and wooden appendage cavitation images and bulbous bow cavitation images is achieved, providing an effective data basis for studying the cavitation effect.

[0107] The present application also provides an integrated device system based on cavitation and cavitation effect collection and analysis, such as Figure 3 As shown, the system includes: a collection computer 301, a high-frequency data collector 302, a high-speed camera 303, a network camera 304 and a watertight camera 305, and the high-frequency data collector 302, the high-speed camera 303, the network camera 304 and the watertight camera 305 are respectively connected to the collection computer 301 for communication.

[0108] The high-frequency data collector 302 is used to collect ship operating parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, and send the collected ship operating parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation to the collection computer 301.

[0109] The high-speed camera 303 is used to photograph the propeller, obtain a propeller cavitation image, and send the propeller cavitation image to the acquisition computer 301 .

[0110] The network camera 304 is used to take images of the stent and the cavitation bubbles attached to the wood, obtain images of the stent and the cavitation bubbles attached to the wood, and send the images of the stent and the cavitation bubbles attached to the acquisition computer 301.

[0111] The watertight camera 305 is used to photograph the bulbous bow, obtain the bulbous bow cavitation image, and send the bulbous bow cavitation image to the acquisition computer 301.

[0112] The acquisition computer 301 is used to obtain and configure the IP address of each device, the communication parameters corresponding to each device and the acquisition computer, and the device parameters of each device; obtain the software development kit corresponding to each device, and obtain the startup program corresponding to each software development kit; set the device synchronization startup script so that each device starts the acquisition at the same time.

[0113] Among them, each startup program is used to instruct the high-frequency data collector to collect ship operating parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, the high-speed camera to take images of propeller cavitation, the network camera to take images of hull brackets and wooden appendages cavitation, and the watertight camera to take images of bulbous bow cavitation; the synchronous startup script is used to instruct the startup programs of each software development package to be triggered simultaneously.

[0114] In a specific embodiment, the acquisition computer 301 is also used to set a first data analysis script, a second data analysis script, a third data analysis script and a fourth analysis script.

[0115] Among them, the first data analysis script includes: a first data analysis method, the first data analysis script is used to indicate that the ship operating parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation are analyzed based on the first data analysis method to obtain real-time frequency domain data; and the real-time frequency domain data and the synchronously obtained propeller cavitation image are analyzed to obtain a first analysis result.

[0116] Among them, the second data analysis script includes: a second data analysis method, the second analysis script is used to indicate that the propeller cavitation image, the hull bracket and wooden appendage cavitation image and the bulbous bow cavitation image are analyzed synchronously based on the second data analysis method to obtain a second analysis result, wherein the second analysis result includes: cavitation area change information and cavitation volume change information.

[0117] Among them, the third data analysis script includes: a third data analysis method, and the third data analysis script is used to indicate the ship operation parameters and the vibration signals, noise signals and pulsating pressure signals generated by cavitation, the hull support and wooden appendage cavitation images and the bulbous bow cavitation images synchronously obtained based on the third data analysis method to obtain the third analysis results.

[0118] Among them, the fourth data analysis script is used to instruct the aggregation of the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

[0119] In a specific embodiment, the acquisition computer 301 is also used to set up an image upload script and configure the image upload duration.

[0120] The image upload script is used to instruct the high-speed camera to upload the captured cavitation images to the acquisition computer at a time interval equal to the image upload duration, and to clear the cavitation images in the local memory after uploading.

[0121] In a specific embodiment, the high-frequency data collector 302 includes: a vibration sensor, a hydrophone, an amplifier, a rotation speed collector, a torque collector, and a phase collector.

[0122] Specifically, the high-speed rotation of the propeller and the cavitation generated by the blades of the equipment integrated system need to be recorded with a high-speed camera (with a sampling frame rate of not less than 2000 frames / second), and the cavitation in the hull is recorded using an ordinary network camera (with a sampling frame rate of 30 to 50 frames / second). The cavitation effect and motion parameters are digital signals collected by sensors and collectors.

[0123] The measurement signals of the equipment integration system mainly include two parts: digital signals and image signals. The digital signals of sensors such as vibration, noise, pulsating pressure, speed, phase and torque are collected by the high-frequency data collector 302, and the time domain signals are sent to the acquisition computer 301 through the switch; the images are collected by different types of cameras, and the image signals are sent to the acquisition computer 301 through the switch.

[0124] Specifically, the bulbous bow cavitation is observed by a watertight camera installed outside the hull at the bulbous bow part, the hull cavitation is observed by a network camera installed inside the hull at the bracket and the wooden part (through the cavitation observation window or the endoscope), and the propeller cavitation is observed by a high-speed camera installed inside the hull above the propeller (through the cavitation observation window); vibration and noise are measured by a vibration sensor and a hydrophone installed at the measuring part connected to the high-frequency data collector 301, and the pulsating pressure sensor signal is connected to the high-frequency data collector 301 after passing through the DH3840H amplifier to measure the pulsating pressure signal; at the same time, the speed, phase and torque signals on the propeller shaft are collected.

[0125] The equipment integration system based on cavitation and cavitation effect collection and analysis provided in the embodiment of the present application realizes simultaneous startup of each device and synchronization of data collection of each device through the collection computer 301, which is interconnected with the high-frequency data collector 302, the high-speed camera 303, the network camera 304 and the watertight camera 305 respectively, and controls the high-frequency data collector 302, the high-speed camera 303, the network camera 304 and the watertight camera 305, so as to realize cavitation effect analysis based on the data synchronously collected by each device using one collection computer, thereby solving the problems of long time consumption, low efficiency and poor effect of cavitation effect analysis, realizing equipment integration, and improving the efficiency and effect of cavitation effect analysis.

[0126] Finally, it should be noted that the above is only the preferred implementation of the present application, and the present application is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present application should be considered to be included in the scope of protection of the present application.

Claims

1. A device integration method based on cavitation and cavitation effect collection and analysis, characterized in that: Applied to an acquisition computer, the method comprises: Obtaining the IP address of each device, the communication parameters corresponding to each device and the acquisition computer, and the device parameters of each device, wherein the devices include: a high-frequency data collector for collecting ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, a high-speed camera for photographing propellers, a network camera for photographing brackets and wooden attachments, and a watertight camera for photographing the bulbous bow; Using a local area network management tool to configure the IP address, the communication parameters and the device parameters on the acquisition computer; Obtaining a software development kit corresponding to each device, and obtaining a startup program corresponding to each software development kit, wherein each startup program is used to instruct the high-frequency data collector to collect the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by the cavitation, the high-speed camera to take a propeller cavitation image, the network camera to take a hull bracket and wooden appendage cavitation image, and the watertight camera to take a bulbous bow cavitation image; A device synchronous startup script is set to enable each device to start acquisition at the same time, wherein the synchronous startup script is used to instruct the startup programs of each software development kit to be triggered at the same time.

2. The device integration method based on cavitation and cavitation effect collection and analysis according to claim 1 is characterized in that: The method further comprises: An image upload script is set up and the image upload duration is configured, wherein the image upload script is used to instruct the high-speed camera to upload the captured cavitation image to the acquisition computer at time intervals of the image upload duration, and to clear the cavitation image in the local memory after uploading.

3. The device integration method based on cavitation and cavitation effect collection and analysis according to claim 1 is characterized in that: The method further comprises: Setting up a first data analysis script; Wherein, the first data analysis script includes: a first data analysis method; The first data analysis script is used to instruct to analyze the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation based on the first data analysis method to obtain real-time frequency domain data; and analyze the real-time frequency domain data and the propeller cavitation image obtained synchronously to obtain a first analysis result; The first analysis result represents the cavitation area change information and the cavitation volume change information at the propeller under the working conditions corresponding to the ship operating parameters.

4. The device integration method based on cavitation and cavitation effect collection and analysis according to claim 3 is characterized in that: The method further comprises: Setting up a second data analysis script; Wherein, the second data analysis script includes: a second data analysis method; The second analysis script is used to instruct to analyze the propeller cavitation image, the hull bracket and wooden appendage cavitation image and the bulbous bow cavitation image synchronously obtained based on the second data analysis method to obtain a second analysis result; Wherein, the second analysis result includes: the corresponding cavitation area change information and cavitation volume change information.

5. The device integration method based on cavitation and cavitation effect collection and analysis according to claim 4 is characterized in that: The method further comprises: Set up the third data analysis script; Wherein, the third data analysis script includes: a third data analysis method; The third data analysis script is used to instruct to analyze the ship operation parameters synchronously obtained based on the third data analysis method, the vibration signal, noise signal and pulsating pressure signal generated by cavitation, the hull bracket and wooden appendage cavitation image and the bulbous bow cavitation image, and obtain a third analysis result; Wherein, the third analysis result includes: the cavitation area change information and the cavitation volume change information of the hull and the bulbous bow under the working conditions corresponding to the ship operation parameters.

6. The device integration method based on cavitation and cavitation effect collection and analysis according to claim 5 is characterized in that: The method further comprises: Setting up a fourth data analysis script; The fourth data analysis script is used to instruct the aggregation of the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

7. The device integration method based on cavitation and cavitation effect collection and analysis according to claim 1 is characterized in that: Utilizing a local area network management tool to configure the device parameters on the acquisition computer includes: Configuring first device parameters of the high-frequency data collector, wherein the first device parameters include: channel name, channel sampling rate and channel filtering, wherein one channel includes multiple sensors; The second device parameters of the high-speed camera are configured, wherein the second device parameters include: sampling frequency, sampling interval and image pixels.

8. An integrated equipment system based on cavitation and cavitation effect collection and analysis, characterized in that: The system includes: an acquisition computer, a high-frequency data collector, a high-speed camera, a network camera and a watertight camera; The high-frequency data collector, the high-speed camera, the network camera and the watertight camera are respectively connected to the acquisition computer for communication; The high-frequency data collector is used to collect ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation, and send the collected ship operation parameters and vibration signals, noise signals and pulsating pressure signals generated by cavitation to the collection computer; The high-speed camera is used to photograph the propeller to obtain a propeller cavitation image, and send the propeller cavitation image to the acquisition computer; The network camera is used to take images of the stent and the cavitation bubble of the woody plant, obtain images of the stent and the cavitation bubble of the woody plant, and send the images of the stent and the cavitation bubble of the woody plant to the acquisition computer; The watertight camera is used to photograph the bulbous bow, obtain the bulbous bow cavitation image, and send the bulbous bow cavitation image to the acquisition computer; The acquisition computer is used to obtain and configure the IP address of each device, the communication parameters corresponding to each device and the acquisition computer, and the device parameters of each device; obtain the software development kit corresponding to each device, and obtain the startup program corresponding to each software development kit; set the device synchronization startup script so that each device starts the acquisition at the same time; Among them, each startup program is used to instruct the high-frequency data collector to collect the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation, the high-speed camera to take the propeller cavitation image, the network camera to take the bracket and wooden appendage cavitation image, and the watertight camera to take the bulbous bow cavitation image; the synchronous startup script is used to instruct the startup program of each software development kit to be triggered simultaneously.

9. The device integration system based on cavitation and cavitation effect collection and analysis according to claim 8 is characterized in that: The acquisition computer is further used to set a first data analysis script, a second data analysis script, a third data analysis script and a fourth analysis script; The first data analysis script includes: a first data analysis method, the first data analysis script is used to instruct to analyze the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by cavitation based on the first data analysis method to obtain real-time frequency domain data; and analyze the real-time frequency domain data and the propeller cavitation image obtained synchronously to obtain a first analysis result; Wherein, the second data analysis script includes: a second data analysis method, the second analysis script is used to instruct to analyze the propeller cavitation image, the bracket and wooden appendage cavitation image and the bulbous bow cavitation image synchronously obtained based on the second data analysis method to obtain a second analysis result, wherein the second analysis result includes: cavitation area change information and cavitation volume change information; The third data analysis script includes: a third data analysis method, the third data analysis script is used to indicate that the ship operation parameters and the vibration signal, noise signal and pulsating pressure signal generated by the cavitation, the hull bracket and the wooden appendage cavitation image and the bulbous bow cavitation image synchronously obtained by analyzing the third data analysis method to obtain a third analysis result; The fourth data analysis script is used to instruct the aggregation of the first analysis result, the second analysis result and the third analysis result to obtain the test analysis result.

10. The device integration system based on cavitation and cavitation effect collection and analysis according to claim 8, characterized in that: The high-frequency data collector includes: a vibration sensor, a hydrophone, an amplifier, a rotation speed collector, a torque collector and a phase collector.

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