An underwater test platform and a linkage control method for the test platform

Abstract

The present invention relates to an underwater test platform and a linkage control method for the test platform, which solves the technical problem that the external pipelines of the existing test platform will disturb the wake flow, resulting in inaccurate measurement results. The underwater test platform includes a main body, a water pump, a heating device and a towing part. A sealed chamber, a water inlet and a water outlet communicating with the chamber are provided inside the main body. The water pump and the heating device are both arranged in the chamber. After the water pump is connected to the heating device, they are communicated with the water inlet and the water outlet. The towing part is arranged on the main body. In the present invention, the water pump and the heating device are arranged inside the main body. The water pump extracts the water outside the main body, heats it through the heating device and discharges it outside the main body through the water outlet to generate a first wake flow, so that hot water can be generated inside the test platform by itself without connecting to an external hot water tank through pipelines, avoiding the disturbance of the external pipelines on the wake flow, and thus improving the accuracy of the wake flow characteristic measurement results.

Description

Technical Field

[0001] The present invention belongs to the technical field of test devices, and particularly relates to an underwater test platform and a method for linkage control of the test platform. Background Art

[0002] In order to study the wake characteristics generated by an underwater vehicle during navigation due to hot water discharge and hydrodynamic effects, the industry has proposed to conduct a pool towing test. However, most of the existing underwater test platforms for wake characteristics adopt a non-watertight integral structure. An external hot water tank is used to generate hot water, which is then introduced into the test platform through a pipeline and discharged through the discharge port of the test platform. During the towing movement of the test platform, the pipeline connecting the hot water tank and the test platform also moves accordingly, which will have a greater disturbing effect on the wake, making it difficult to accurately measure and separate the wake characteristics generated by the test platform itself, resulting in inaccurate measurement results. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide an underwater test platform to solve the technical problem that the external pipeline of the underwater test platform in the prior art will have a disturbing effect on the wake, resulting in inaccurate measurement results.

[0004] The present invention is achieved by the following technical solutions:

[0005] An underwater test platform, comprising:

[0006] A main body, with a sealed chamber provided inside the main body, and an inlet and an outlet communicating with the chamber provided on the main body;

[0007] A water pump and a heating device, arranged in the chamber, the water pump is connected to the heating device and then communicates with the inlet and the outlet; and,

[0008] A towing part, arranged on the main body, for connecting an external towing device to drive the main body to move.

[0009] Optionally, to better implement the present invention, an installation opening communicating with the chamber is provided on the main body, and a cover plate is covered at the installation opening, and the cover plate is connected to the main body in a watertight manner.

[0010] Optionally, to better implement the present invention, a rotating shaft is rotatably connected to the stern end of the main body through a sealing device, one end of the rotating shaft is connected with a propeller, and the other end of the rotating shaft is connected with a driving device for driving the rotating shaft to rotate.

[0011] Optionally, to better implement the present invention, a controller and a storage battery are further included. The controller and the storage battery are arranged in the chamber, and the controller is electrically connected to the heating device, the water pump, the driving device and the storage battery.

[0012] Optionally, to better implement the present invention, a speed detection device for detecting the moving speed of the main body is further provided on the main body, and the speed detection device is connected to the controller.

[0013] Optionally, to better implement the present invention, the speed detection device includes a first pressure sensor and a second pressure sensor arranged at the bow of the main body. The first pressure sensor is used to detect the total pressure of the test platform, and the second pressure sensor is used to detect the static pressure of the test platform.

[0014] Optionally, to better implement the present invention, a first wireless transmission module and a second wireless transmission module that are paired with each other are further included. The first wireless transmission module is arranged in the chamber, and the second wireless transmission module is arranged on an external monitoring platform.

[0015] Optionally, to better implement the present invention, the cover plate is a non-metallic cover plate, and the signal transmitting end and the signal receiving end of the first wireless transmission module face the cover plate.

[0016] Optionally, to better implement the present invention, an appendage is detachably connected to the main body. The appendage includes one or more of a bow wing, a fin and a stern wing. The towing part includes a front towing part and a rear towing part. The front towing part is connected to a front towing device, and the rear towing part is connected to a rear towing device.

[0017] The present invention also provides a test platform linkage control method, including the above-mentioned underwater test platform. The method includes:

[0018] The controller is used to receive the test platform navigation speed value detected by the speed detection device, and compare the test platform navigation speed with a preset speed threshold:

[0019] When the navigation speed value of the test platform is less than the preset speed threshold, the controller controls the water pump, the heating device and the driving device to be turned off; or,

[0020] When the navigation speed value of the test platform is greater than or equal to the preset speed threshold, the controller controls the water pump, the heating device and the driving device to start.

[0021] The present invention has the following beneficial effects compared with the prior art:

[0022] The present invention provides a closed chamber within a test platform, and both a water pump and a heating device are arranged within the closed chamber. The water pump extracts water flow from outside the test platform through an inlet, and then the heating device heats the water flow extracted by the water pump and discharges it through an outlet to generate a first wake. This enables the test platform to generate hot water internally without the need to connect to an external hot water tank through pipes, avoiding the disturbance of the external connecting pipes on the wake and improving the accuracy of the wake characteristic measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is a schematic diagram of the external structure of the present invention;

[0025] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 is Figure 2 a schematic diagram of the installation structure of the thruster in

[0027] Figure 4 is a schematic diagram of the control principle of the present invention;

[0028] Figure 5 is a schematic diagram of the installation structure of the first sensor and the second sensor.

[0029] In the figure:

[0030] 1 - main body; 2 - cover plate; 3 - connecting piece; 4 - thruster; 5 - nut; 6 - bow wing; 7 - fin; 8 - stern wing; 9 - towing part; 10 - rotating shaft; 11 - first piezometric tube; 12 - storage battery; 13 - heating device; 14 - controller; 15 - water pump; 16 - driving device; 17 - mechanical seal; 18 - first pressure sensor; 19 - outlet; 20 - inlet; 21 - first wireless transmission module; 22 - counterweight; 23 - second pressure sensor; 24 - second piezometric tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] An underwater test platform, such as Figure 1 and Figure 2 As shown, the main body 1 is a rotating body consisting of a semi-ellipsoidal bow end, a cylindrical midship body, and a conical stern end. The main body 1 has a sealed chamber inside, the purpose of which is to prevent water outside the main body 1 from seeping into the chamber. The main body 1 is provided with a water inlet 20 and a water outlet 19 that communicate with the chamber. The water inlet 20 and the water outlet 19 are both located at the bottom of the main body 1. A water pump 15 and a heating device 13 are installed in the chamber. The water pump 15 and the heating device 13 are fixed to the chamber by bolts or welding. The heating device 13 and the water pump 15 are both connected to a power source, which can be a power source such as AC power, a battery 12, or a generator. The water inlet end of the heating device 13 is connected to the water inlet 20 by a pipeline, the water outlet end of the heating device 13 is connected to the water inlet end of the water pump 15 by a pipeline, and the water outlet end of the water pump 15 is connected to the water outlet 19 of the main body by a pipeline. Of course, the connection method between the water pump 15 and the heating device 13 and the water inlet 20 and the water outlet 19 can also be that the water inlet end of the water pump 15 is connected to the water inlet 20 through a pipeline, the water inlet end of the heating device 13 is connected to the water outlet end of the water pump 15 through a pipeline, and the water outlet end of the heating device 13 is connected to the water outlet 19 through a pipeline.

[0034] The water pump 15 is connected to the water inlet 20 of the main body 1 through a pipeline, the water outlet of the water pump 15 is connected to the water inlet of the heating device 13 through a pipeline, and the water outlet of the heating device 13 is connected to the water outlet 19 of the main body 1 through a pipeline.

[0035] The water inlet 20 and the water outlet 19 may be provided at other locations of the main body 1 , such as the top, end, or side wall of the main body 1 , depending on the structure of the test object.

[0036] like Figure 1As shown in the figure, a towing part 9 is also provided on the main body 1. The towing part 9 is connected to the towing device of the water tank through a rope. The movement of the towing device drives the movement of the test platform. The towing device controls the sailing speed and diving depth of the test platform, so that the test platform passes through the test area preset in the water tank at a set sailing speed and diving depth to measure the required characteristic information. The towing part 9 is a screw, a lifting ring, a fastener, etc. The towing part 9 includes a front towing part and a rear towing part. A front towing device and a rear towing device are also provided in the water tank. The front towing device is connected to the front towing part, and the rear towing device is connected to the rear towing part. The front towing device and the rear towing device jointly tow the test platform to ensure that the test platform remains horizontal in the water tank. When the test platform needs to move forward horizontally, the pulling force of the front towing device is set to be greater than that of the rear towing device. When the test platform needs to move backward horizontally, the pulling force of the front towing device is set to be less than that of the rear towing device.

[0037] Preferably, the front towing part is provided at the front end of the main body 1 and is collinear with the central axis of the main body 1, and the rear towing part is provided at the rear end of the main body 1 and is collinear with the central axis of the main body 1. Of course, the front towing part or the rear towing part can also be set at other positions of the main body 1 as long as it can pull the test platform forward or backward.

[0038] Optionally, the water pump 15 adopts a metering pump, which can accurately adjust the output flow rate and can keep the discharge pressure constant. Of course, the water pump 15 can also adopt an ordinary water pump 15, and a flow regulating valve is externally connected to the water outlet end of the ordinary water pump 15 to adjust the output flow rate of the water pump 15. The heating device 13 adopts a heating device capable of adjusting the heating temperature, including but not limited to a pipe heater or a box heater. Both the pipe heater and the box heater are equipped with a temperature control system and can adjust the heating temperature. In this embodiment, the heating device 13 adopts a box heater.

[0039] After the test platform is placed underwater, the water pump 15 pumps the water flow outside the test platform into the heating device 13 for heating. The heated water flow is discharged outside the main body 1 through the water outlet 19 to generate a first wake. Since both the water pump 15 and the heating device 13 are arranged inside the main body 1, the test platform can heat the water with a lower temperature outside to the required temperature through the water pump 15 and the heating device 13. The external water supply pipe connected to the test platform is removed, avoiding the disturbance of the wake caused by the external water supply pipe moving with the test platform, and also avoiding affecting the accuracy of the data measurement results of the wake characteristics during the test process.

[0040] Optionally, as Figure 1As shown, an installation opening communicating with the chamber is provided on the main body 1. The installation opening can serve as an entrance and exit for transporting equipment into the chamber. A cover plate 2 is covered at the installation opening. The connection method between the cover plate 2 and the main body 1 includes but is not limited to hinged or bolted fixed connection. In this embodiment, the cover plate 2 and the main body 1 are fixed by means of bolt connection. A plurality of blind threaded holes are distributed around the installation opening of the main body 1, and a plurality of connection holes corresponding to the blind threaded holes are provided on the cover plate 2. Bolts are used to pass through the connection holes and the blind threaded holes to fixedly connect the cover plate 2 and the main body 1. In order to ensure the water tightness of the connection between the cover plate 2 and the installation opening, a rubber sealing ring is provided on the cover plate 2 and / or the installation opening. After the cover plate 2 is covered at the installation opening, the rubber sealing ring is pressed to ensure the water tightness between the main body 1 and the cover plate 2.

[0041] Optionally, as Figure 2 and Figure 3 shown, a rotating shaft 10 is rotatably connected to the stern end of the main body 1. The rotating shaft 10 is collinear with the central axis of the main body 1, and the shaft body of the rotating shaft 10 and the main body 1 are mechanically sealed by a mechanical seal 17. The rotating shaft 10 can also be used as the rear towing part of the test platform. Of course, the rotating shaft 10 and the main body 1 can also adopt packing seal or labyrinth seal and other sealing methods that can prevent water leakage at the rotating connection of the rotating shaft 10 and the main body 1.

[0042] Specifically, as Figure 2 and Figure 3 shown, a connecting piece 3 is detachably connected to the stern end of the main body 1 by threads. A first through hole adapted to the rotating shaft 10 is provided on the connecting piece 3. When the connecting piece 3 is connected to the stern end, the first through hole is collinear with the central axis of the main body 1. A boss is provided on the shaft body of the rotating shaft 10. The rotating shaft 10 passes through the first through hole, and the boss is in contact with the connecting piece 3. A first threaded hole adapted to the outer wall of the mechanical seal 17 is provided on the connecting piece 3. The inner wall of the mechanical seal 17 is installed on the shaft body of the rotating shaft 10, and the outer wall of the mechanical seal 17 is threadedly connected to the connecting piece 3. The rotating shaft 10 on one side of the boss is located inside the main body 1, and the rotating shaft 10 on the other side of the boss is located outside the main body 1. In this embodiment. The rotating shaft 10 serves as the rear towing part 9 of the main body 1.

[0043] As Figure 2 and Figure 3As shown in the figure, a thruster 4 is detachably connected to one end of the rotating shaft 10 located outside the main body 1. When the thruster 4 rotates, a second wake will be generated in the water. The thruster 4 includes an impeller. The center of the impeller is sleeved on the rotating shaft 10 and is connected to the rotating shaft 10 by a flat key. One end of the impeller is in contact with the boss, and the other end of the impeller is fixed by a nut 5. Of course, the fixing method of the impeller and the rotating shaft 10 can also be fixed by a pin or a set screw. According to different wake characteristics to be measured, the thruster 4 can be selectively installed or not installed on the main body 1. If it is necessary to measure the single first wake characteristic, the thruster 4 can be removed, and the rotating shaft 10 is retained. If it is necessary to measure the single second wake characteristic or the mixed wake characteristic of the first wake and the second wake mixed together, the thruster 4 can be installed on the rotating shaft 10, and the water pump 15 and the heating device 13 can be selectively turned on or off. When the main body 1 moves, the impeller in the thruster 4 will rotate under the action of the water flow.

[0044] Optionally, as Figure 2 shown, the other end of the rotating shaft 10 is connected to a driving device 16. The driving device 16 is preferably a speed regulating motor, which can adjust different speeds according to needs, so that the thruster 4 generates different second wakes at different speeds. Of course, the driving device 16 can also be selected in the form of a combination of a hydraulic motor and a hydraulic station, and the hydraulic station provides liquid pressure for the hydraulic motor.

[0045] In addition, as Figure 2 shown, a controller 14 and a storage battery 12 are also provided in the chamber of the main body 1. The storage battery 12 serves as an external power source and is connected to the controller 14, the driving device 16, the water pump 15 and the heating device 13 for power supply. The controller 14 can control the flow parameter of the water pump 15, the heating temperature parameter of the heating device 13 and the driving speed parameter of the driving device 16. A variety of working condition modes are preset in the controller 14, and each working condition mode corresponds to different water pump 15 flow rates, water flow temperatures and speeds of the thruster 4.

[0046] In order to enable the monitoring platform to detect and control the operation of the internal equipment of the test platform in real time, a pair of first wireless transmission modules 21 and second wireless transmission modules are also provided on the test platform and the monitoring platform. The second wireless transmission module is not shown in the figure. Both the first wireless transmission module 21 and the second wireless transmission module include a wireless signal receiving end and a wireless signal transmitting end, and the first wireless transmission module 21 and the second wireless transmission module are wirelessly signal-connected in a duplex or half-duplex manner. As Figure 2As shown in the figure, the first wireless transmission module 21 is disposed in the chamber of the main body 1 and is electrically connected to the controller 14 in the chamber. The second wireless transmission module is disposed on an external monitoring platform and is connected to the control system on the monitoring platform. An operator can set operating parameters on the monitoring platform through the control system on the monitoring platform, and transmit the operating parameters to the controller 14 through the first wireless transmission module 21 and the second wireless transmission module. Then, the controller 14 controls the water pump 15, the heating device 13, and the driving device 16 to execute corresponding parameters, thereby achieving the purpose of remotely controlling the test platform.

[0047] When the operator changes different operating parameters, the test platform can be in different working conditions in water, and various external measuring devices underwater can measure the wake characteristics of the test platform under different working conditions. Of course, data such as the flow rate data of the water pump 15, the heating temperature data of the heating device 13, and the rotation speed of the driving device 16 on the test platform can also be transmitted to the second wireless transmission module through the first wireless transmission module 21. The operator can observe various data in the test platform on the monitoring platform.

[0048] In order to enable stable signal transmission between the first wireless transmission module 21 and the second wireless transmission module, the cover plate 2 in this embodiment is made of a non-metallic material, such as a non-metallic material that does not shield wireless signals, such as plastic, rubber, or glass. Moreover, both the signal generating end and the signal receiving end in the first wireless transmission module 21 face the cover plate 2.

[0049] Since electromagnetic waves attenuate in water, in order to ensure the connection between the first wireless transmission module and the second wireless transmission module, during the navigation of the test platform, the cover plate 2 of the test platform will be intermittently exposed above the water surface. When the cover plate 2 of the test platform is exposed above the water surface, a connection is established between the first wireless transmission module in the main body 1 and the second wireless transmission module of the external monitoring platform, and control parameters can be modified or the operating data of each device in the test platform can be obtained on the monitoring platform. There is no need to disassemble the test platform to lead out communication cables.

[0050] Optionally, as Figure 1 shown, an appendage is also detachably connected to the main body 1. The appendage includes one or more of a bow wing 6, a fin 7, and a stern wing 8. Threaded blind holes are provided on the surface of the main body 1, and through holes adapted to the threaded blind holes are provided on the bow wing 6, the fin 7, and the stern wing 8. The bow wing 6, the fin 7, and the stern wing 8 are fixed to the main body 1 by bolts passing through the through holes and being screwed into the threaded blind holes. When the operator measures the characteristic data of the test platform, one or more of the bow wing 6, the fin 7, and the stern wing 8 can be selectively connected to the main body 1 to measure the influence of different attachments on the characteristic data of the test platform.

[0051] Optionally, as Figure 2As shown in the figure, a counterweight 22 is also provided in the chamber. By adjusting the center of gravity of the test platform with the counterweight 22, the center of gravity of the test platform is positioned directly below the center of buoyancy of the test platform, and the vertical distance between the center of buoyancy and the center of gravity is increased as much as possible to ensure that gravity and buoyancy are approximately equal, so that the test platform can float in water without external forces. Of course, the counterweight 22 is only a selectively used component. Without using the counterweight 22, by pre-calculating and adjusting the installation positions of the devices inside the main body 1 such as the water pump, heating device, driving device, storage battery, and processor, the gravity and buoyancy of the entire test platform can also be approximately equal.

[0052] Embodiment 2:

[0053] This embodiment is a better implementation manner of Embodiment 1. In this embodiment, a speed detection device for detecting the moving speed of the main body 1 is further provided on the main body 1. Since the towing device drags the test platform through a rope, and the rope has a certain elasticity and bending ability, when the towing device accelerates or decelerates, the speed change of the test platform cannot be consistent with the speed of the towing device. Therefore, it is necessary to separately measure the navigation speed of the test platform.

[0054] As Figure 5 shown, the speed detection device includes a first pressure sensor 18 and a second pressure sensor 23. Both the first pressure sensor 18 and the second pressure sensor 23 are electrically connected to the controller 14. A first pressure measuring tube 11 and a second pressure measuring tube 24 are provided at the front end of the main body 1. Both the first pressure measuring tube 11 and the second pressure measuring tube 24 are straight tubes, and the axes of the first pressure measuring tube 11 and the second pressure measuring tube 24 are parallel to the central axis of the main body.

[0055] Both ends of the first pressure measuring tube 11 are connected. The first pressure sensor 18 is located in the chamber and is hermetically connected to the end of the first pressure measuring tube 11 close to the main body. The first pressure sensor 18 is used to detect the total pressure P 总 of the test platform sailing in water, that is, the water pressure in the oncoming flow direction of the test platform.

[0056] The end of the second pressure measuring tube 24 far from the main body 1 is closed, and a plurality of radially arranged vent holes are evenly distributed on the tube body of the second pressure measuring tube 24. The vent holes are connected to the end of the second pressure measuring tube 24 close to the main body 1. The second pressure sensor 23 is located in the chamber and is hermetically connected to the end of the second pressure measuring tube 24 close to the main body 1. The second pressure sensor 23 is used to detect the static pressure P 静 of the test platform sailing in water, that is, the water pressure perpendicular to the oncoming flow direction of the test platform.

[0057] The dynamic pressure P 总 can be obtained by the difference between the total pressure P 静 and the static pressure P 动, and then through a mathematical formula to calculate the speed V of the test platform; where ρ 水 is the density of the water body.

[0058] Of course, the detection device for detecting the moving speed of the detection main body 1 can also adopt other detection devices for measuring the underwater speed, such as an underwater positioning beacon detection device or a Doppler sonar detection device.

[0059] The remaining structure of this embodiment is the same as that of Embodiment 1.

[0060] The linkage control method of the test platform is as follows:

[0061] As Figure 4 shown, the controller 14 is used to receive the navigation speed value of the test platform detected by the speed detection device, and compare the navigation speed of the test platform with a preset speed threshold; when the navigation speed value of the test platform is less than the preset speed threshold, the controller 14 controls the water pump 15, the heating device 13, and the driving device 16 to close; or, when the navigation speed of the test platform is greater than or equal to the preset speed threshold, the controller 14 controls the water pump 15, the heating device 13, and the driving device 16 to start. Thus, the linkage control of the electrical equipment inside the test platform is realized, and it is possible to avoid the stationary test platform from continuing to disturb the environment, and at the same time save the electric energy of the storage battery 12.

[0062] The test steps of the test platform in this embodiment are as follows:

[0063] (1) Remove the cover plate 2 from the main body 1, and install the storage battery 12, the heating device 13, the controller 14, the water pump 15, the driving device 16, the rotating shaft 10, and the first pressure sensor 18 and the second pressure sensor 23 into the chamber inside the test platform through the installation port, and connect the pipelines and circuits;

[0064] (2) Remove the connecting member 3 from the main body 1, put the mechanical seal 17 on the shaft, and connect the mechanical seal 17 to the connecting member 3 by thread, and then connect the connecting member 3 to the stern end of the main body 1;

[0065] (3) Install the thruster 4 on the rotating shaft 10 and fix it with the nut 5;

[0066] (4) Fix the bow wing 6, the fin 7, and the stern wing 8 in the appendage on the main body 1 with screws;

[0067] (5) According to the gravity and buoyancy of the test platform, adjust the weight or position of the configuration block so that the gravity and buoyancy of the test platform are roughly equal;

[0068] (6) Install the non-metallic cover plate 2 back on the main body 1.

[0069] (7) Write a control program on an external computer of the test platform and download the program into the internal controller 14 of the test platform through a wireless network. The control program sets parameters such as the heating temperature of the heating device 13, the water pumping flow rate of the water pump 15, and the rotation speed of the driving device 16, as well as a speed threshold. Monitor and calculate the ship speed through the first pressure sensor 18 and the second pressure sensor 23, and perform interlocking control on the internal electrical equipment of the test platform according to the ship speed. That is, when the ship speed is less than the preset speed threshold, the controller 14 controls the water pump 15, the heating device 13, and the driving device 16 to turn off, so as to avoid the stationary test platform from continuing to disturb the environment and save the electric energy of the storage battery 12 at the same time; when the ship speed is greater than or equal to the preset speed threshold, the controller 14 controls the water pump 15, the heating device 13, and the driving device 16 to start, and makes the control parameters of each device reach the preset value through the control program.

[0070] (8) Place the test platform in the pool and connect the test platform to the pool towing device through the towing part 9. Control the sailing speed and diving depth of the test platform through the towing device, so that the test platform passes through the test area at the set ship speed and diving depth, and measure the required characteristic information;

[0071] For example, deploy a temperature acquisition system in the test area to obtain the wake temperature characteristics of the object to be tested.

[0072] Or deploy a wake acquisition system such as a wave height meter and flow velocity in the test area to obtain the wake characteristics of the object to be tested.

[0073] Or install a noise sensor inside the test platform. The noise sensor is connected to the controller 14, and deploy a far-field radiation noise acquisition system in the test area to obtain the near-field and far-field radiation noise information of the object to be tested.

[0074] (9) Lift the test platform out of the water through the towing device. The control system of the external monitoring platform of the test platform communicates wirelessly with the controller 14 of the test platform through the first wireless transmission module 21 and the second wireless transmission module, adjust the control program of the controller 14, and reset the control parameters of each electrical equipment, so as to change the test conditions.

[0075] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the said claims.

Claims

1. An underwater test platform, characterized in that, Comprising: A main body (1) with a sealed chamber therein, and an inlet (20) and an outlet (19) communicating with the chamber are provided on the main body (1); A water pump (15) and a heating device (13) are arranged in the chamber. The water pump (15) is connected to the heating device (13) and then communicates with the inlet (20) and the outlet (19); and, A towing part (9) is provided on the main body (1) and is connected to an external towing device to drive the main body (1) to move; A rotating shaft (10) is connected to the stern end of the main body (1), and a driving device (16) for driving the rotating shaft (10) to rotate is connected to the rotating shaft (10). The main body (1) is also provided with a speed detection device; A controller (14) is used to receive the navigation speed value of the test platform detected by the speed detection device and compare the navigation speed of the test platform with a preset speed threshold; When the navigation speed value of the test platform is less than the preset speed threshold, the controller (14) controls the water pump (15), the heating device (13) and the driving device (16) to be turned off; or, When the navigation speed value of the test platform is greater than or equal to the preset speed threshold, the controller (14) controls the water pump (15), the heating device (13) and the driving device (16) to be started.

2. An underwater test platform according to claim 1, characterized in that: An installation opening communicating with the chamber is formed on the main body (1), and a cover plate (2) is covered at the installation opening. The cover plate (2) is connected to the main body (1) in a watertight manner.

3. An underwater test platform according to claim 2, characterized in that: The stern end of the main body (1) is rotatably connected to a rotating shaft (10) through a sealing device. One end of the rotating shaft (10) is connected to a propeller (4), and the other end of the rotating shaft (10) is connected to a driving device (16) for driving the rotating shaft (10) to rotate.

4. An underwater test platform according to claim 3, characterized in that: It further includes a storage battery (12). The controller (14) and the storage battery (12) are arranged in the chamber. The controller (14) is electrically connected to the heating device (13), the water pump (15), the driving device (16) and the storage battery (12).

5. An underwater test platform according to claim 4, characterized in that: A speed detection device for detecting the moving speed of the main body (1) is further provided on the main body (1), and the speed detection device is connected to the controller (14).

6. The underwater test platform according to claim 5, wherein: The speed detection device includes a first pressure sensor (18) and a second pressure sensor (23) arranged at the bow end of the main body (1). The first pressure sensor (18) is used to detect the total pressure of the test platform, and the second pressure sensor (23) is used to detect the static pressure of the test platform.

7. An underwater test platform according to claim 5, characterized in that: It further includes a pair of first wireless transmission module (21) and second wireless transmission module. The first wireless transmission module (21) is arranged in the chamber, and the second wireless transmission module is arranged on an external monitoring platform.

8. An underwater test platform according to claim 7, characterized in that: The cover plate (2) is a non-metal cover plate, and the signal transmitting end and the signal receiving end of the first wireless transmission module (21) face the cover plate (2).

9. An underwater test platform according to claim 1, characterized in that: An attachment is also detachably connected to the main body, the attachment including one or more of a bow wing (6), a fin (7), and a stern wing (8). The towing part (9) includes a front towing part and a rear towing part. The front towing part is connected to a front towing device, and the rear towing part is connected to a rear towing device.

Images