A comprehensive test system for broadside array sonar
Through the design of the comprehensive test system of the side array sonar, the problem that traditional tests cannot verify the vibration and noise reduction performance of submarine equipment is solved, and the multi-point noise and vibration spectrum characteristics of the sonar array section on the side array on the submarine are realized. The analysis provides a more accurate performance assessment and meets the current requirements for the sonar performance assessment of the side array.
Patent Information
- Application Number
- CN202010759473.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-31
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2040-07-31
AI Technical Summary
The traditional side array sonar test cannot effectively verify the vibration and noise reduction performance of the equipment on the submarine, resulting in huge differences in its performance after actual loading and in the test, and cannot meet the current performance evaluation of the side array sonar performance. need.
A comprehensive test system for the side array sonar is designed, including a simulation cabin segment platform and a collection test platform. Through vibration cabin, noise monitoring and acceleration pickup probes, the vibration and sound field environment of the submarine are simulated, and the noise spectrum and vibration are collected and analyzed. Spectral characteristics realize multi-point monitoring and analysis of sonar array segments on the side array, and evaluate its vibration and noise reduction performance.
The performance measurement of the sonar array segment of the side-side array is achieved under the vibration and sound field conditions of the same boat state, providing a more accurate performance evaluation, meeting the current requirements of sonar performance evaluation of the sonar array on the side-side array and improving the The scientificity and accuracy of the experiment.
Smart Images
Figure CN111948627B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sonar testing, and in particular to a broadside array sonar integrated testing system. Background Art
[0002] Broadside sonar generally refers to low-frequency passive direction-finding and ranging sonars arranged on the left and right sides of a submarine. They can effectively make up for the blind spot of the bow sonar detection and improve the submarine's omnidirectional warning capability. At the same time, they will not have the same deployment and recovery restrictions as towed array sonars, which would affect the maneuverability and tactical freedom of the submarine. In today's complex battlefield environment where anti-submarine technology is changing with each passing day, they can effectively enhance the submarine's ability to quickly detect and locate in a concealed situation.
[0003] As we all know, the installation position of the side array sonar on the submarine belongs to the fully developed turbulence zone. After the seawater flows through the bow horizontal rudder, a large vortex is formed, generating fluid noise. The strong vibration of the internal mechanical equipment and pipelines of the submarine excites the shell plate, which is transmitted in the shell plate in the form of bending waves. It will not only be transmitted to the hydrophone sensitive element through the (non) pressure hull, ribs, array installation structure, etc., forming a direct transmission of vibration, but also through the vibration of the hull, it will excite sound waves in the fluid around the hydrophone sensitive element. In addition, the cavitation noise generated by the propeller will also be transmitted to the hydrophone sensitive element through the seawater medium. These background interference noises will have a great impact on the detection performance of the side array sonar. Therefore, the ability to reduce vibration and noise has also become one of the core indicators for evaluating the performance of a side array sonar.
[0004] Traditional broadside sonar tests are often limited to free-field performance measurements of hydrophone units or local arrays. However, in fact, due to the combined influence of the submarine hull, acoustic baffles and various noise fields, there is a huge difference between the performance of the broadside array in the free field and the actual performance after installation on the boat. Traditional broadside sonar test technology cannot verify the core performance of the equipment such as vibration reduction and noise reduction, so it is far from meeting the current evaluation needs for broadside sonar performance. Summary of the invention
[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a comprehensive test system for the broadside array sonar, which can more closely simulate the working environment of the broadside array sonar on the submarine, more fully examine the effects of various technical measures of the broadside array sonar in the development and testing stage, and more accurately evaluate the combat performance of the broadside array sonar in the future actual boat state. At the same time, it integrates the functions of array deployment, excitation, monitoring, collection, and analysis, and can meet the current evaluation needs for the performance of the broadside array sonar to the greatest extent.
[0006] The objective of the present invention is achieved through the following technical solutions: the comprehensive test system for the broadside array sonar comprises a simulated cabin platform and a collection test platform; the simulated cabin platform comprises curved roll plates arranged on both sides thereof, the upper ends of the two curved roll plates are connected to each other through an upper top plate, and the lower ends are connected to each other through a lower bottom plate, thereby forming a simulated cabin of a submarine, a number of hollow ribs are uniformly welded along the inner sides of the two curved roll plates to form an air barrier, and a number of excitation cabins are fixed on the ribs; an installation guide rail for installing the broadside array sonar array segment is fixed along the outer side of the curved roll plates; the collection test platform comprises an excitation source control device , power amplifier, noise monitoring and acceleration pickup probe, data acquisition device and data analysis device. The excitation source control device with a power amplifier is electrically connected to the simulation cabin platform for sending an excitation signal to the excitation cabin. The noise monitoring and acceleration pickup probe is arranged on the simulation cabin platform. The data analysis device is electrically connected to the noise monitoring and acceleration pickup probe through the data acquisition device. The data of the noise monitoring and acceleration pickup probe is collected by the data acquisition device and transmitted to the data analysis device, which reads and analyzes the data to obtain the noise spectrum and vibration spectrum characteristics of the side array sonar array segment.
[0007] As a further technical solution, the arc length and thickness of the curved roll plate correspond to the submarine to be simulated; there are two mounting rails, which are fixed on the curved roll plate on one side of the simulation compartment platform at a spacing and position corresponding to the submarine to be simulated.
[0008] As a further technical solution, reinforcing ribs are welded on the upper top plate, and a docking flange is also provided on the upper top plate. A counterweight groove is provided at the bottom of the lower bottom plate. A number of support columns extend upward from the upper surface of the lower bottom plate and rest against the lower surface of the upper top plate. A lifting ear is provided at the top edge of the arc rolled plate.
[0009] As a further technical solution, the interior of the vibration cabin is hollow to form a vibration cavity, in which a vibration device is provided. The vibration device is fixed to the back support bottom plate by screws, and a vibration transmission rod provided at the end of the vibration device passes through the ribs and contacts the inner surface of the arc roll plate; a stuffing box outlet is provided on the top of the vibration cabin for leading out the cables of the equipment in the cabin and connecting them to the collection and test platform.
[0010] As a further technical solution, the noise monitoring and acceleration pickup probes are arranged around the side array sonar array section.
[0011] As a further technical solution, noise monitoring and acceleration pickup probes are also arranged in the vibration cabin.
[0012] As a further technical solution, the data acquisition device can simultaneously record a total of 64 channels of data from noise monitoring and acceleration pickup probes.
[0013] The beneficial effects of the present invention are:
[0014] 1. Construct a structural installation environment similar to the actual ship state for the side array sonar array segment;
[0015] 2. Construct a vibration and acoustic field environment similar to the actual ship state for the side array sonar array segment;
[0016] 3. Realize the monitoring and analysis of multi-point noise spectrum characteristics of the side array sonar array section and its surrounding designated parts;
[0017] 4. Realize multi-point vibration spectrum characteristic monitoring and analysis of the side array sonar array segment and its inner and outer designated parts;
[0018] 5. Realize the measurement of vibration and noise reduction performance of the side array sonar segment under the vibration and sound field conditions close to the real boat;
[0019] 6. Provide a more realistic test environment for adaptive vibration line spectrum cancellation and weak signal detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of the simulation compartment platform.
[0021] Figure 2 This is the structural main view of the simulation compartment platform.
[0022] Figure 3 This is a structural cross-sectional view of the simulated cabin platform.
[0023] Figure 4 This is the installation diagram of the vibration equipment.
[0024] Figure 5 This is a schematic diagram of the connection between the acquisition test platform and the simulation cabin platform.
[0025] Figure 6 Schematic diagram of the excitation source control interface.
[0026] Figure 7 This is a schematic diagram of the acquisition and analysis interface.
[0027] Explanation of the reference numerals: simulation cabin platform I, docking flange 1, upper top plate 2, lifting lug 3, mounting guide rail 4, curved roll plate 5, vibration cabin 6, air barrier 7, support column 8, lower bottom plate 9, rib 10, vibration source control device 11, power amplifier 12, noise monitoring and acceleration pickup probe 13, data acquisition device 14, data analysis device 15, counterweight slot 16, vibration chamber 6-1, vibration equipment 6-2, vibration transmission rod 6-3, back support bottom plate 6-4, stuffing box outlet 6-5. DETAILED DESCRIPTION
[0028] The present invention will be described in detail below with reference to the accompanying drawings:
[0029] Example: As attached Figures 1 to 5 As shown, the broadside array sonar integrated test system comprises a simulated compartment platform I and a collection test platform; the simulated compartment platform I comprises curved roll plates 5 arranged on both sides thereof, the upper ends of the two curved roll plates 5 are connected to each other through an upper top plate 2, and the lower ends are connected to each other through a lower bottom plate 9, so as to form a simulated compartment of a submarine (preferably, the arc length and thickness of the curved roll plates 5 correspond to the submarine to be simulated), a plurality of hollow ribs 10 are uniformly welded along the inner sides of the two curved roll plates 5 to form an air barrier 7, and a plurality of excitation chambers 6 with a watertight structure are fixedly installed on the ribs 10; as shown Figure 4 As shown, the interior of the vibration cabin 6 is hollow to form a vibration cavity 6-1, and a vibration device 6-2 is arranged in the vibration cavity 6-1. The vibration device 6-2 is fixed to the back support bottom plate 6-4 by means of screws, and a vibration transmission rod 6-3 arranged at the end of the vibration device 6-2 passes through the rib 10 and contacts the inner surface of the curved roll plate 5; a stuffing box outlet 6-5 is arranged on the top of the vibration cabin 6 for leading out the cables of the equipment in the cabin and connecting them to the collection and test platform.
[0030] Along the outer side of the curved roll plate 5, a mounting rail 4 for mounting the side array sonar array segment is fixed by screws. The mounting rail 4 has two (such as Figure 1 , 2 As shown), it is fixed on the curved rolled plate 5 on one side of the simulated compartment platform 1 according to the spacing and position corresponding to the submarine to be simulated; reinforcing ribs are welded on the upper top plate 2, and a docking flange 1 is also provided on the upper top plate 2. A counterweight groove 16 is provided at the bottom of the lower bottom plate 9, and three support columns 8 extend upward from the upper surface of the lower bottom plate 9 to abut against the lower surface of the upper top plate 2 (as shown in FIG. Figure 3 As shown), a lifting lug 3 is provided at the top edge of the curved roll plate 5.
[0031] like Figure 5As shown, the acquisition test platform includes an excitation source control device 11, a power amplifier 12, a noise monitoring and acceleration pickup probe 13, a data acquisition device 14 and a data analysis device 15. The excitation source control device 11 with the power amplifier 12 (the two cooperate with each other to generate excitation signals of various types and intensities such as line spectrum and broadband spectrum) is electrically connected to the simulation cabin platform I to send excitation signals to the excitation cabin 6. The noise monitoring and acceleration pickup probe 13 is arranged around the side array sonar array section, and at the same time, the excitation signal is sent to the excitation cabin 6. Noise monitoring and acceleration pickup probes 13 may also be arranged inside, and the data analysis device 15 is electrically connected to the noise monitoring and acceleration pickup probes 13 through the data acquisition device 14. The data of the noise monitoring and acceleration pickup probes 13 are collected by the data acquisition device 14 and transmitted to the data analysis device 15, which reads and analyzes the data to obtain the noise spectrum and vibration spectrum characteristics of the side array sonar array segment. The data acquisition device 14 can simultaneously record a total of 64 channels of data from the noise monitoring and acceleration pickup probes 13.
[0032] The working process of the present invention: according to Figure 1 After the simulation cabin platform I is built as shown, the test can be started. First, the side array sonar array segment is fixedly installed on the mounting rail 4. A number of noise monitoring and acceleration pickup probes 13 can be hung or adsorbed in the surrounding areas as required. At the same time, a number of noise monitoring and acceleration pickup probes 13 can also be arranged in the vibration cabin 6; then the excitation source control device 11 with a power amplifier 12 is electrically connected to the excitation device 6-2 in the vibration cabin 6 through the stuffing box outlet 6-5, and each noise monitoring and acceleration pickup probe 13 is electrically connected to the data analysis device 15 through the data acquisition device 14; start the excitation source control device 11 and the power amplifier 12 (the excitation source control interface is shown in FIG. Figure 6 As shown), an excitation signal is sent to the excitation chamber 6, and the data collected by the data acquisition device 14 is read and analyzed by the data analysis device 15 (the acquisition and analysis interface is as shown in FIG. Figure 7 As shown), the noise spectrum and vibration spectrum characteristics of the side array sonar array segment are obtained, the excitation source control device 11 and the power amplifier 12 are adjusted, and excitation signals of various types and intensities such as line spectrum and broadband spectrum are generated.
[0033] The present invention constructs a comprehensive test system that can approximately simulate the installation structure and sound field environment of the side array sonar on a real boat, thereby realizing the monitoring and analysis of the multi-point noise and vibration spectrum characteristics of the side array sonar array segment and its surrounding designated parts, providing important technical support for fully examining the effects of technical measures such as vibration reduction and sound absorption, vibration isolation and noise reduction of the side array sonar segment, and evaluating the detection performance of the side array sonar segment under the background of vibration and noise.
[0034] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.
Claims
1. A broadside array sonar integrated test system, characterized in that: The invention comprises a simulated cabin platform (I) and a collection and testing platform; the simulated cabin platform (I) comprises curved roll plates (5) arranged on both sides thereof, the upper ends of the two curved roll plates (5) are connected to each other through an upper top plate (2), and the lower ends are connected to each other through a lower bottom plate (9), thereby forming a simulated cabin of a submarine; a plurality of hollow ribs (10) are uniformly welded along the inner sides of the two curved roll plates (5) to form an air barrier (7), and a plurality of excitation cabins (6) are fixedly mounted on the ribs (10); a mounting guide rail (4) for mounting a side array sonar array segment is fixed along the outer sides of the curved roll plates (5); the collection and testing platform comprises an excitation source control device (11), a power amplifier (12), a noise monitoring and acceleration pickup probe (13) , a data acquisition device (14) and a data analysis device (15); a vibration source control device (11) with a power amplifier (12) is electrically connected to the simulation cabin platform (I) and is used to send a vibration signal to the vibration cabin (6); a noise monitoring and acceleration pickup probe (13) is arranged on the simulation cabin platform (I); a data analysis device (15) is electrically connected to the noise monitoring and acceleration pickup probe (13) through the data acquisition device (14); data of the noise monitoring and acceleration pickup probe (13) is collected through the data acquisition device (14) and transmitted to the data analysis device (15); the data is read and analyzed by the data analysis device (15), thereby obtaining the noise spectrum and vibration spectrum characteristics of the side array sonar array segment.
2. The broadside array sonar integrated test system according to claim 1, characterized in that: The arc length and thickness of the arc rolled plate (5) correspond to the submarine to be simulated; there are two mounting rails (4), which are fixed on the arc rolled plate (5) on one side of the simulation compartment platform (I) at a spacing and position corresponding to the submarine to be simulated.
3. The broadside array sonar integrated test system according to claim 1 is characterized in that: The upper top plate (2) is welded with reinforcing ribs, and a docking flange (1) is also provided on the upper top plate (2). A counterweight groove (16) is provided at the bottom of the lower bottom plate (9). A plurality of support columns (8) extend upward from the upper surface of the lower bottom plate (9) and abut against the lower surface of the upper top plate (2). A lifting lug (3) is provided at the top edge of the curved rolled plate (5).
4. The broadside array sonar integrated test system according to claim 1 is characterized in that: The interior of the vibration cabin (6) is hollow to form a vibration cavity (6-1), and a vibration device (6-2) is arranged in the vibration cavity (6-1). The vibration device (6-2) is fixed to the back support base plate (6-4) by means of screws. A vibration transmission rod (6-3) arranged at the end of the vibration device (6-2) passes through the rib (10) and contacts the inner surface of the curved roll plate (5). A stuffing box outlet (6-5) is arranged at the top of the vibration cabin (6) for leading out the cables of the equipment in the cabin and connecting them to the collection and test platform.
5. The broadside array sonar integrated test system according to claim 1 is characterized in that: The noise monitoring and acceleration pickup probes (13) are arranged around the side array sonar array section.
6. The broadside array sonar integrated test system according to claim 1 is characterized in that: Noise monitoring and acceleration pickup probes (13) are also arranged in the vibration chamber (6).