A device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity.

Abstract

This invention relates to the field of image acquisition technology and discloses a device for automatic acquisition of underwater images in multiple scenes and with varying turbidity. The device includes a housing for injecting clean water; a titration mechanism for dripping solvent into the clean water within the housing; a stirring mechanism including a drive unit disposed within the housing and a mounting plate connected to the output end of the drive unit; a mounting plate containing a component with multiple rotatably arranged blades at equal circumferential intervals, each blade having a bubble guide groove; a turbidity measuring device disposed at the bottom of the housing; a waterproof electronic screen disposed at the bottom of the housing; and a fixing mechanism disposed above the waterproof electronic screen, which is detachably connected to a camera. This invention enables rapid mixing of clean water and solvent, effectively reducing time consumption, solving the inaccuracy of manual solvent dripping, and improving the efficiency of turbidity control.

Description

Technical Field

[0001] This invention relates to the field of image acquisition technology, and in particular to a device for automatic acquisition of underwater images in multiple scenes and with varying turbidity. Background Technology

[0002] Underwater image datasets are of great significance for training various underwater vision models, as they are large in quantity, depict diverse scenes, and reflect underwater lighting environments.

[0003] Currently, underwater image acquisition methods are mainly divided into natural environment acquisition and laboratory environment acquisition. Images acquired in natural environments often suffer from uncontrollable blurring and color casts due to the uncontrollable underwater environment. Furthermore, the difficulty of acquisition conditions results in a limited number of usable clear underwater images. In contrast, underwater images acquired in laboratory environments are more controllable, easier to acquire, and facilitate the construction of large datasets for training models.

[0004] However, current laboratory methods for controlling water turbidity primarily rely on manually adding solvents to the water to adjust turbidity, while simultaneously using turbidity sensors to display the current turbidity in real time. In this method, turbidity changes are delayed; when solvent is added to the water, the turbidity does not change immediately but rather is a slow process. Furthermore, the true turbidity of the water after adding a certain amount of solvent can only be measured after the solvent has fully mixed with the water. However, waiting for the solvent to fully mix with the water consumes a significant amount of time, greatly increasing time costs and reducing work efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity, aiming to solve or improve at least one of the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an apparatus for automatic acquisition of underwater images in multiple scenarios and with varying turbidity, comprising:

[0007] The tank body, with its interior for filling with clean water;

[0008] A titration mechanism for dripping solvent into the clean water inside the chamber;

[0009] The stirring mechanism includes a drive device disposed inside the housing and a mounting plate connected to the output end of the drive device. The mounting plate is provided with an assembly, and the assembly is provided with a plurality of blades rotatably and circumferentially spaced. The blades are provided with bubble guide grooves.

[0010] A turbidity measuring device is installed at the bottom of the box.

[0011] A waterproof electronic screen is installed at the bottom of the enclosure;

[0012] A fixing mechanism is provided above the waterproof electronic screen, and the fixing mechanism is used to detachably connect to the camera.

[0013] Optionally, the titration mechanism includes:

[0014] Mounting base;

[0015] A burette is mounted on the mounting base, with the liquid outlet of the burette facing the inside of the housing;

[0016] A valve is installed on the burette.

[0017] Optionally, the burette is also equipped with a liquid level sensor.

[0018] Optionally, the fixing mechanism includes:

[0019] A mounting bracket is provided on the top of the housing, and the mounting bracket is provided with multiple disassembly and assembly positions;

[0020] A rotating gripper is mounted on the mounting bracket and is used for detachable connection with the camera;

[0021] A light shield is mounted on the mounting bracket and covers the camera.

[0022] Optionally, the box is provided with multiple supplementary lights in the circumferential direction.

[0023] Optionally, a light-shielding film is provided circumferentially on the side wall of the enclosure.

[0024] Optionally, the side wall of the box is provided with a water inlet.

[0025] Optionally, the bottom of the housing is provided with multiple bases.

[0026] Optionally, the driving device is a motor.

[0027] Optionally, the enclosure is made of tempered glass.

[0028] This invention discloses the following technical effects: By fixing the camera with a fixing mechanism, images on a waterproof electronic screen can be acquired through the camera. A titration mechanism drips solvent into clean water, and a drive device rotates the mounting plate, which in turn drives the blades to stir the water. Simultaneously, the bubble guide grooves on the blades ensure that bubbles are effectively guided and mixed into the liquid during stirring, avoiding interference with the stirring effect. This allows for rapid mixing of water and solvent, effectively reducing time consumption. Furthermore, in conjunction with a turbidity measuring device, it effectively solves the inaccuracies of manually dripping solvent, improving the efficiency of turbidity control. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the installation disk structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the fixing mechanism of the present invention.

[0033] In the diagram: 1. Drive unit; 2. Turbidity measuring device; 3. Titration mechanism; 4. Supplemental light; 5. Fixing mechanism; 51. Mounting bracket; 52. Rotating gripper; 53. Light shield; 6. Base; 7. Water inlet; 8. Waterproof electronic screen; 9. Mounting plate; 10. Blade; 11. Bubble guide groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figures 1-3 This invention provides a device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity, comprising:

[0037] The tank body, with its interior for filling with clean water;

[0038] Titration mechanism 3 is used to add solvent to the clean water inside the chamber;

[0039] The stirring mechanism includes a drive unit 1 disposed inside the housing and a mounting plate 9 connected to the output end of the drive unit 1. The mounting plate 9 is provided with an assembly, and the assembly is provided with a plurality of blades 10 rotatably and circumferentially spaced. Each blade 10 is provided with a bubble guide groove 11.

[0040] Turbidity measuring device 2 is located at the bottom of the chamber;

[0041] The waterproof electronic screen 8 is located at the bottom of the tank. The waterproof electronic screen 8 measures 60cm x 60cm and is 1cm thick. It is fixed to the bottom of the tank with waterproof silicone sealant. The waterproof electronic screen 8 is connected to a computer via a waterproof cable and a waterproof data cable. The computer can control the underwater electronic screen to display different images, thereby changing the underwater scene and effectively simplifying the difficulty of adjusting the underwater image.

[0042] The fixing mechanism 5 is located above the waterproof electronic screen 8 and is used to detachably connect to the camera.

[0043] The camera is fixed in place by the fixing mechanism 5, allowing the camera to capture images on the waterproof electronic screen 8. The solvent is dripped into clean water by the titration mechanism 3, and the installation plate 9 is driven to rotate by the drive device 1. The installation plate 9 drives the blades 10 to stir the clean water. At the same time, the bubble guide grooves 11 on the blades 10 ensure that the bubbles are effectively guided and mixed into the liquid during the stirring process, avoiding interference from the bubbles with the stirring effect. This allows the clean water and solvent to mix quickly, effectively reducing the time consumption. In conjunction with the turbidity measuring device 2, it effectively solves the inaccuracy of manually dripping the solvent and improves the efficiency of turbidity control.

[0044] Furthermore, the turbidity measuring device 2 is a DS500 portable multi-parameter water quality meter. Holes are drilled at the bottom of the box, and bolts are used to fix the turbidity measuring device 2 to the bottom of the box.

[0045] The turbidity measuring device 2 remains operational after starting the data collection process, acquiring turbidity data every 0.5 seconds and transmitting it to the computer via Bluetooth. The rapid rotation of the motor accelerates the mixing of water and solvent. Once the turbidity data stabilizes, the current turbidity value is recorded.

[0046] Furthermore, the surface of the blade 10 is specially treated with a low-friction coefficient polytetrafluoroethylene (PTFE) coating to reduce friction between the blade 10 and the liquid, thereby improving energy efficiency and durability. The blade 10 employs curved blades with progressively curved leading and trailing edges, and appropriate angles and curvatures to reduce fluid resistance and increase fluid turbulence. Ten to twelve blades of the blade 10 can be placed depending on the size of the mounting plate 9, the liquid volume, and the stirring rate. The blade spacing is 8% to 10% of the inner diameter of the mounting plate 9 to ensure sufficient fluid circulation during stirring. The leading edge angle of the blade 10 can be adjusted between 15° and 30° to ensure optimal fluid turbulence at different stirring speeds.

[0047] Furthermore, data was pre-collected on the addition of different volumes of water and solution to the tank, as well as the rotation time and speed of the blade 10. This collected data was used as input, and the turbidity value of the water in the glass tank after stabilization was used as output to train a neural network model. During subsequent actual sampling, the pre-trained model can control the titration device to dispense the appropriate amount of solution, while the motor drives the blade 10 to rotate at the corresponding time and speed to achieve the target turbidity value.

[0048] In one embodiment of the present invention, the titration mechanism 3 includes:

[0049] Mounting base;

[0050] The burette is mounted on the mounting base with the liquid outlet facing the inside of the box. The burette is a polytetrafluoroethylene acid and alkali universal burette.

[0051] The valve is located on the burette and is an electrically operated rotary adjustment device.

[0052] The solvent output from the burette is controlled by a valve.

[0053] In one embodiment of the present invention, a liquid level sensor is also provided on the burette.

[0054] The liquid level sensor monitors the liquid level in the burette in real time.

[0055] In one embodiment of the present invention, the fixing mechanism 5 includes:

[0056] Mounting bracket 51 is located on the top of the housing. The mounting bracket has multiple mounting and dismounting positions. Mounting bracket 51 adopts a four-piece fixing plate design with multiple mounting and dismounting positions on the fixing plates. By adjusting the fixing positions of the four fixing plates at the same time, the camera depth can be flexibly adjusted.

[0057] The rotating gripper 52 is mounted on the mounting bracket 51. The rotating gripper 52 is used to detachably connect to the camera. The rotating gripper 52 changes the size of the clamping area by rotating gear, thereby adapting to most models of underwater cameras, effectively improving the utilization rate of the fixing mechanism 5 and reducing the acquisition cost.

[0058] A light shield 53 is mounted on a mounting bracket 51 and covers the camera.

[0059] In one embodiment of the present invention, a plurality of supplementary lights 4 are arranged circumferentially inside the box. Specifically, there are four supplementary lights 4, which are LED strip lights, installed on the four sides of the box that are perpendicular to the box, for sampling supplementary lighting.

[0060] Furthermore, to ensure uniform illumination, the outer shells of all four supplementary lights 4 are covered with diffuser sheets with diffuse reflection capabilities to diffuse the light and reduce light spots. Simultaneously, the color and intensity of the supplementary lights 4 can be controlled by computer to achieve different underwater lighting environments, thus constructing underwater image datasets for various lighting environments.

[0061] In one embodiment of the present invention, a light-shielding film is provided around the side wall of the box to eliminate external light interference. Therefore, it is not necessary to install an underwater illuminance meter. It is only necessary to set the color and light intensity of the supplementary light 4 to a fixed value to ensure the consistency of the time environment when collecting underwater images.

[0062] In one embodiment of the present invention, a water inlet 7 is provided on the side wall of the box. The water inlet 7 has a diameter of 4cm and the center of the water inlet 7 is 10cm away from the bottom of the cylinder. The water inlet 7 is sealed with a threaded cap.

[0063] In one embodiment of the present invention, a plurality of bases 6 are provided at the bottom of the box. The bases 6 are made of stainless steel. Each base 6 is made by welding a circular stainless steel with a diameter of 40 mm and a height of 30 mm and a circular stainless steel with a diameter of 60 mm and a height of 15 mm. Four stainless steel bases 6 are fixed to the four corners of the bottom of the box using glass glue.

[0064] In one embodiment of the present invention, the driving device 1 is a motor, which is fixed to the side wall of the box with 8 to 12 bolts, and the center of the motor is 35cm away from the bottom of the glass cylinder.

[0065] In one embodiment of the present invention, the casing is made of tempered glass.

[0066] Furthermore, a metal cover is provided on the top of the box. The metal cover is made of a 60cm×60cm stainless steel plate with a thickness of 1cm. A clearance hole is provided on the metal cover to avoid the burette, and the mounting bracket 51 is detachably connected to the metal cover.

[0067] How to use:

[0068] Connect the device to the computer and fill the tank with clean water until the water level is 5 to 5 cm above the fixing mechanism. Fix the camera to the fixing mechanism 5 and adjust the camera fixing depth using the mounting bracket 51.

[0069] Download the publicly available dataset and use a computer to control the display of an image on the waterproof electronic screen 8. Set the illumination intensity and color of the underwater supplementary light 4 to a fixed value. Use a camera to acquire images at a rate of 24 frames per second for 2 seconds. The waterproof electronic screen 8 changes the image every 2 seconds until all images in the downloaded publicly available dataset have been displayed. At this point, the camera stops sampling, and all clear underwater images have been acquired.

[0070] Adjust the intensity and color of the supplementary light 4 to simulate different underwater lighting environments.

[0071] Based on actual needs, set the target turbidity and use the trained LSTM model to control the titration mechanism 3 and the motor.

[0072] Once the turbidity value stabilizes at the target turbidity, repeat the above steps until the turbidity of the water in the tank rises to the point that the underwater image is completely blurred and cannot be seen.

[0073] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0074] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity, characterized in that, include: The tank body, with its interior for filling with clean water; A titration mechanism (3) is used to drip solvent into the clean water inside the chamber; The stirring mechanism includes a drive device (1) disposed inside the housing and a mounting plate (9) connected to the output end of the drive device (1). The mounting plate (9) is provided with an assembly, and the assembly is provided with a plurality of blades (10) rotatably and circumferentially spaced. The blades (10) are provided with bubble guide grooves (11). The surface of the blades (10) is provided with a polytetrafluoroethylene coating. The blades (10) are curved blades with progressive curves at both their leading and trailing edges. The turbidity measuring device (2) is located at the bottom of the box; A waterproof electronic screen (8) is installed at the bottom of the enclosure; A fixing mechanism (5) is disposed above the waterproof electronic screen (8), and the fixing mechanism (5) is used to detachably connect to the camera.

2. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, The titration mechanism (3) includes: Mounting base; A burette is mounted on the mounting base, with the liquid outlet of the burette facing the inside of the housing; A valve is installed on the burette.

3. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 2, characterized in that, The burette is also equipped with a liquid level sensor.

4. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, The fixing mechanism (5) includes: Mounting bracket (51) is provided on the top of the housing, and the mounting bracket is provided with multiple disassembly and assembly positions; A rotating gripper (52) is disposed on the mounting bracket (51), and the rotating gripper (52) is used to detachably connect to the camera; A light shield (53) is disposed on the mounting bracket (51) and covers the camera.

5. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, Multiple supplementary lights (4) are arranged around the perimeter of the box.

6. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, The side walls of the enclosure are provided with a light-shielding film.

7. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, The side wall of the box is provided with a water inlet (7).

8. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, The bottom of the box is provided with multiple bases (6).

9. The device for automatic acquisition of underwater images in multiple scenes and with varying turbidity as described in claim 1, characterized in that, The driving device (1) is a motor.

10. The device for automatic acquisition of underwater images in multiple scenarios and with varying turbidity as described in claim 1, characterized in that, The enclosure is made of tempered glass.

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