Ship bubble wake flow optical measuring device

Abstract

The utility model provides a ship bubble wake flow optical measuring device, and belongs to the technical field of bubble wake flow measurement. The device comprises a structure main body, a laser emission assembly, a data receiving assembly, a wireless emission module and a data analysis module, the structure body is a bearing device of the whole measuring device, the laser emitting device assembly and the data receiving assembly are oppositely arranged on the two sides of the structure body respectively, and the wireless emitting module sends data collected by the data receiving assembly to the data analysis module for data analysis. The device freely moves in the wake flow extension direction after entering water, can measure the bubble wake flow in the direction perpendicular to the ship navigation direction and capture bubble wake flow data of the ship bubble wake flow at all moments, and is wider in measurement range and more accurate in measurement data.

Description

Technical Field

[0001] The utility model relates to the technical field of wake bubble detection, in particular to an optical measurement device for ship bubble wake. Background Art

[0002] Whether surface or underwater, when sailing, the rotating propellers and hull friction cause surface waves to break up and air to be drawn in near the waterline, forming a wake field containing numerous bubbles (especially microbubbles), known as a bubble wake. The size and motion of the bubbles in this wake vary. Large bubbles quickly rise to the surface and disappear after breaking, while very small bubbles are quickly dissolved by the seawater. Some microbubbles can persist in the turbulent wake for tens of minutes. Wakes can typically reach 20 to 30 times the length of the ship, with some extending for tens of kilometers. Wakes can persist for extended periods in low sea conditions. Because they are connected to the ship, tracking the wake allows tracking the ship. Currently, surface ship detection, tracking, and pursuit primarily utilizes wake characteristics. Therefore, the detection of weak wake bubbles is crucial.

[0003] Optical wake detection technology has developed rapidly in recent years. Compared to acoustic detection, optical detection has become an increasingly important detection method due to its advantages such as shorter wavelength, faster propagation speed, better directionality, stronger anti-interference capabilities, and greater sensitivity to bubbles. Existing detection equipment primarily simulates bubble wakes in the laboratory or is installed on the bottom of a ship. However, laboratory conditions cannot fully simulate the bubble wake experienced by a ship at sea, while installing the detection equipment on the bottom of a ship has problems such as a limited detection range. Utility Model Content

[0004] In order to solve the problems that the existing technology cannot well simulate the bubble wake during the navigation of the ship and the detection range is small, the utility model proposes the following technical solutions:

[0005] An optical measuring device for ship bubble wake, comprising

[0006] A structural body, wherein the structural body is formed into a square frame structure and each side constituting the square frame is a hollow shell structure;

[0007] A laser emission assembly, wherein the laser emission assembly includes two or more groups of laser emission sources; each group of laser emission sources is composed of a plurality of laser emission sources, and each group of laser emission sources is disposed adjacent to each other in pairs along different sides of the structural body;

[0008] A data receiving assembly, comprising an illuminometer and a data acquisition module; the illuminometers are provided in multiple groups, and the number of groups is the same as that of the laser emitting assembly, each group of illuminometers is provided on the other side opposite to the installation side of the laser emission source, and the number of the relatively arranged illuminometers is the same as that of the laser emission sources, and the light receiving end of the illuminometer is arranged opposite to the light source of the corresponding laser emission source for measuring laser illuminance; the data acquisition module is connected to each illuminometer to collect the laser illuminance data measured by each illuminometer;

[0009] A wireless transmitting module, the wireless transmitting module is connected to the data acquisition module of the data receiving component 3;

[0010] A data analysis module is provided inside the cabin and is used for performing wake bubble analysis and imaging on the laser illumination data emitted by the wireless transmitting module.

[0011] According to an optical measurement device for ship bubble wakes in an embodiment of the present application, the main structure is formed by connecting four hollow barrel-shaped structures; among them, a counterweight block is provided on the lower barrel-shaped structure of the two horizontal barrel-shaped structures to ensure that the device maintains an upright state after entering the water.

[0012] According to an optical measurement device for ship bubble wake in an embodiment of the present application, a guide groove for reducing resistance is provided along the height direction of the outer side walls of the two vertical barrel-shaped structures of the structural main body 1.

[0013] According to an optical measurement device for ship bubble wakes in an embodiment of the present application, each of the four barrel-shaped structures is provided with an openable and closable door to facilitate loading and unloading of the laser emission source and the illuminance meter.

[0014] According to an optical measurement device for ship bubble wake in an embodiment of the present application, inner side walls of the two opposing barrel-shaped structures of the structural main body are provided with through holes having the same position and number.

[0015] According to an optical measurement device for ship bubble wake in an embodiment of the present application, the laser emission assembly includes two groups of laser emission sources, and the two groups of laser emission sources are respectively arranged along two adjacent barrel-shaped structures of the structural main body; the illuminance meters are correspondingly provided with two groups, and each group of illuminance meters is respectively arranged along the other two barrel-shaped structures, and the number of the relatively arranged illuminance meters is the same as the laser emission sources, and the light receiving end of each laser emission source and illuminance meter is directly opposite to the through hole on its inner wall.

[0016] According to an optical measurement device for ship bubble wake in an embodiment of the present application, at least one partition separates the barrel-shaped structure to form several spaces inside the barrel-shaped structure for installing the laser emission source and the illuminance meter, and each space corresponds to at least one through hole.

[0017] According to an optical measurement device for ship bubble wake in an embodiment of the present application, a pad is further provided, through which the laser emission source and the illuminance meter are mounted on the corresponding partition, and by adjusting the height of the pad, the light receiving ends of the laser emission source and the illuminance meter are aligned with the through-hole on the inner wall of the structural body.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] (1) The present invention provides an optical measurement device for ship bubble wakes that can independently float on the sea surface. Compared with laboratory simulated bubble wake optical measurement devices, the present invention measures the bubble wake data of ships actually sailing in the sea, and the data is more realistic.

[0020] (2) Compared with the optical measuring device suspended on the bottom of the ship, the present invention can measure the bubble wake perpendicular to the sailing direction of the ship, and can measure the bubble wake data from the center of the wake to the end of the wake, with a wider measurement range. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an optical measurement device for ship bubble wake.

[0022] Figure 2 This is a schematic diagram of the internal installation of the barrel structure.

[0023] In the figure: 1 structural body; 2 laser emission component; 3 data receiving component; 4 pad; 12 barrel-shaped structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] This embodiment provides an optical measurement device for ship bubble wake, including a structural body 1, a laser emitting component 2, a data receiving component 3, a wireless transmitting module and a data analysis module.

[0026] like Figure 1 As shown, in one embodiment, the structural body 1 is a supporting device for the entire measuring device, which is a square steel frame structure welded from four hollow barrel-shaped structures 12. Each barrel-shaped structure 12 is provided with a door that can be opened and closed. A guide groove is provided in the height direction of the outer side walls of the two vertical barrel-shaped structures, and the inner side walls of the two opposite barrel-shaped structures 12 are provided with through holes of the same position and number. The interior of each barrel-shaped structure 12 is divided into several spaces by multiple steel plates, and each space corresponds to at least one through hole.

[0027] According to the measurement requirements, two groups of laser emission sources and two groups of illuminance meters are set up in total; the two groups of laser emission sources are respectively set along two adjacent barrel-shaped structures 12 of the structural main body 1, and the two groups of illuminance meters are respectively set along the other two barrel-shaped structures 12, and the number of illuminance meters and laser emission sources arranged opposite to each other is the same; for each laser emission source, a pad 4 is fixed to the steel plate by bolts, and the laser emission source is fixed to the pad 4 with a U-shaped clip, so that the laser emission source is facing the through hole on the inner wall of the barrel-shaped structure; the illuminance meter is also installed in the same way on the barrel-shaped structure on the opposite side and at a position facing the laser emission source, and the light receiving end of the illuminance meter is facing the through hole on its inner wall.

[0028] Connect the data acquisition module to each illuminometer, the wireless transmitter module to the data acquisition module, and the data analysis module inside the cabin. After the entire measurement device is connected, ensure that all instruments are turned on.

[0029] At the start of the measurement, the measuring device is positioned at the center of the bubble wake behind the propeller. Once the propeller is started, the bubble wake generates thrust, causing the measuring device to move in the opposite direction of the ship's direction of travel, moving freely from its initial center position to the end of the wake. A laser source on one side of the measuring device continuously emits a fixed-wavelength laser. This laser experiences varying degrees of attenuation as it passes through the bubble wake. An illuminance meter on the other side of the measuring device receives this attenuated light data. The data acquisition module collects this data, which is then transmitted via a wireless transmitter to a data analysis module located inside the ship's cabin for bubble wake analysis.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed in the present invention can make equivalent replacements or changes based on the technical solution and concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An optical measurement device for ship bubble wake, characterized in that: include A structural body, wherein the structural body is formed into a square frame structure and each side constituting the square frame is a hollow shell structure; A laser emission assembly, wherein the laser emission assembly includes two or more groups of laser emission sources; each group of laser emission sources is composed of a plurality of laser emission sources, and each group of laser emission sources is disposed adjacent to each other in pairs along different sides of the structural body; A data receiving assembly, comprising an illuminometer and a data acquisition module; the illuminometers are provided in multiple groups, and the number of groups is the same as that of the laser emitting assembly, each group of illuminometers is provided on the other side opposite to the installation side of the laser emission source, and the number of the relatively arranged illuminometers is the same as that of the laser emission sources, and the light receiving end of the illuminometer is arranged opposite to the light source of the corresponding laser emission source for measuring laser illuminance; the data acquisition module is connected to each illuminometer to collect the laser illuminance data measured by each illuminometer; A wireless transmitting module, the wireless transmitting module is connected to the data acquisition module of the data receiving component; A data analysis module is provided inside the cabin and is used for performing wake bubble analysis and imaging on the laser illumination data emitted by the wireless transmitting module.

2. A ship bubble wake optical measurement device according to claim 1, characterized in that, The main structure is formed by connecting four hollow barrel-shaped structures.

3. A ship bubble wake optical measurement device according to claim 2, characterized in that, A counterweight is provided on the lower barrel structure of the two horizontal barrel structures to ensure that the device remains upright after entering the water.

4. A ship bubble wake optical measurement device according to claim 2, characterized in that, A guide groove for reducing resistance is provided along the height direction of the outer side walls of the two vertical barrel-shaped structures of the structural main body.

5. A ship bubble wake optical measurement device according to claim 2, characterized in that, Each of the four barrel-shaped structures is provided with an openable and closable door to facilitate loading and unloading of the laser emission source and the illuminometer.

6. A ship bubble wake optical measurement device according to claim 2, characterized in that: The inner side walls of the two barrel-shaped structures opposite to each other in the structural main body are provided with through holes having the same position and number.

7. A ship bubble wake optical measurement device according to claim 6, characterized in that: The laser emission assembly includes two groups of laser emission sources, which are respectively arranged along two adjacent barrel-shaped structures of the structural main body; the illuminance meters are correspondingly provided with two groups, each group of illuminance meters is respectively arranged along the other two barrel-shaped structures, and the number of the relatively arranged illuminance meters is the same as the laser emission sources, and the light receiving end of each laser emission source and illuminance meter is directly opposite to the through hole on its inner wall.

8. The optical measurement device for ship bubble wake according to claim 6, characterized in that: At least one partition plate separates the barrel-shaped structure to form a plurality of spaces inside the barrel-shaped structure for installing the laser emission source and the illuminometer, and each space corresponds to at least one through hole.

9. The optical measurement device for ship bubble wake according to claim 8, characterized in that: A pad is also provided, through which the laser emission source and the illuminometer are mounted on the corresponding partition, and by adjusting the height of the pad, the light receiving ends of the laser emission source and the illuminometer are aligned with the through hole on the inner wall of the structural body.

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