A three-anchor based offshore real-time internal wave observation system and method

Abstract

The application belongs to the technical field of marine instruments, and particularly relates to a near-shore real-time internal wave observation system and method based on three anchors, which comprises a three-anchor fixing frame system, a real-time internal wave observation system and a shore station terminal system; the real-time internal wave observation system is fixed in the three-anchor fixing frame system in a sliding connection mode, moves up and down along the three-anchor fixing frame system at different sea surface heights, cannot rotate in the horizontal direction, and thus the stability of the observation environment is ensured; the real-time internal wave observation system is used for collecting real-time observation data and sending the real-time observation data to the shore station terminal system for processing; and the shore station terminal system is used for analyzing the received real-time observation data, detecting whether internal waves exist, and thus judging whether to provide early warning. The application can realize long-time complete measurement of internal solitary waves in the sea, has high time resolution and spatial resolution, and provides good data for the research on internal waves.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of marine instruments, in particular to a near-shore real-time internal wave observation system and method based on three anchors. BACKGROUND

[0002] Although internal waves are not as turbulent as sea surface waves, they lurk in the water and secretly cause damage, often leaving people unprepared, hence the name "underwater devil". The destructive power of internal waves mainly occurs in the pycnocline, which forms two opposite internal wave flows. Such internal wave flow can reach 1.5 meters per second, like scissors, and has very strong destructive power. Therefore, near-shore marine facilities usually need internal wave observation and warning equipment to reduce the damage of internal waves to near-shore marine facilities. At present, internal waves are mainly observed in real time by acoustic Doppler current profilers (ADCP) or single-anchor real-time buoy temperature chains to provide internal wave warnings.

[0003] Acoustic Doppler current profilers (ADCP) judge whether internal waves are generated by measuring the flow rate of sea currents at different depths through acoustics, but acoustic Doppler current profilers (ADCP) are relatively expensive, and if an early warning array is to be deployed to complete internal wave warning in various directions, the cost of using acoustic Doppler current profilers (ADCP) will be very high.

[0004] Single-anchor real-time buoy temperature chains detect whether internal waves are generated based on temperature, but under the action of sea currents, the surface buoy will usually rotate in the horizontal direction, causing the temperature chain to be twisted off, which is also the reason why single-anchor real-time buoy temperature chains cannot be used on a large scale. SUMMARY

[0005] The purpose of the present application is to provide a near-shore real-time internal wave observation system based on three anchors. Through the near-shore real-time internal wave observation system based on three anchors, the temperature chain works in a stable measurement environment. Since the temperature detector has a small power consumption, the temperature detector is kept working all the time, and internal waves are detected in real time through temperature changes. When internal waves are detected, the temperature chain will show obvious internal wave characteristics. After the shore station terminal system analyzes the internal waves, it will issue an internal wave warning, giving valuable time for marine facilities to respond to internal waves in advance.

[0006] The technical solution adopted by the present application to achieve the above-mentioned purpose is as follows: a near-shore real-time internal wave observation system based on three anchors, comprising: a three-anchor fixing frame system, a real-time internal wave observation system, and a shore station terminal system.

[0007] The real-time internal wave observation system is fixed in the three-anchor fixing frame system in a sliding connection manner. At different sea surface heights, the real-time internal wave observation system moves up and down along the three-anchor fixing frame system and cannot rotate in the horizontal direction, thereby ensuring the stability of the observation environment.

[0008] The real-time internal wave observation system is used for collecting real-time observation data and sending the real-time observation data to the shore terminal system for processing.

[0009] The shore terminal system is used for analyzing the received real-time observation data, detecting whether internal waves exist, and determining whether to provide early warning.

[0010] The three-anchor fixing frame system comprises an upper circular fixing frame A, a fixing rod B, a lower circular buoyancy fixing frame C, a fixing cable and an anchor.

[0011] The upper circular fixing frame A and the lower circular buoyancy fixing frame C are arranged in parallel.

[0012] Three fixing rods B are arranged between the upper circular fixing frame A and the lower circular buoyancy fixing frame C, and the fixing rods B are vertically and uniformly arranged at the edges of the upper circular fixing frame A and the lower circular buoyancy fixing frame C.

[0013] The upper circular fixing frame A, the fixing rod B and the lower circular buoyancy fixing frame C are connected together by welding to form a stable fixing frame.

[0014] A fixing cable is arranged at the connection between the lower circular buoyancy fixing frame C and the fixing rod B, and the end of each fixing cable is connected with an anchor. The three fixing cables and the three anchors stably fix the fixing frame in water at a low tide position. Regardless of low tide or high tide, the fixing frame remains at a stable position.

[0015] The lower circular buoyancy fixing frame C is a stainless steel frame wrapped with buoyancy material to provide buoyancy of the fixing frame on the water, so that the fixing frame can stably float on the water.

[0016] The real-time observation data comprises profile temperature data and a depth value at the deepest position.

[0017] The real-time internal wave observation system comprises a shell, a collection and communication controller, a fixing rod A, a sleeve ring, a temperature chain, a data collection unit, an underwater motor system and a fixing anchor.

[0018] The shell is arranged on the central axis of the three-anchor fixing frame system, and the collection and communication controller is arranged in the shell.

[0019] The number of the fixing rod A is the same as that of the fixing rod B, and the fixing rod A is uniformly arranged on the shell and arranged at the same position as the fixing rod B.

[0020] The end of the fixing rod A is provided with a sleeve ring, and the sleeve ring is sleeved on the fixing rod B of the three-anchor fixing frame system to enable the shell to slide up and down along the central axis of the three-anchor fixing frame system.

[0021] One end of the temperature chain is fixed to the bottom of the shell, and the other end is connected with the fixed anchor; a data acquisition unit is arranged on the temperature chain;

[0022] The underwater motor system is arranged in the protection shell on the temperature chain and connected with the acquisition and communication controller, so that when the underwater motor rotates, the control instruction sent by the shore terminal system to the acquisition and communication controller is received, the temperature chain is controlled to be tensioned or released, the data acquisition unit on the temperature chain is kept in the same profile, and the temperature chain is kept in the straightened state, so that the temperature field data collected by the temperature chain can meet the internal wave detection requirement.

[0023] The shell is a transparent plastic shell, so that the acquisition and communication controller can realize solar charging through the sunlight.

[0024] The data acquisition unit comprises a temperature probe and a depth gauge connected with the acquisition and communication controller through a data communication line;

[0025] A plurality of temperature probes are arranged on the chain body of the temperature chain from top to bottom in sequence and uniformly, for collecting temperature data of different profiles;

[0026] The depth gauge is arranged in the protection shell at the underwater motor system, for collecting depth data to calculate temperature field data at different depths;

[0027] The acquisition and communication controller receives the temperature data of different profiles sent by the temperature probe and the depth data collected by the depth gauge through two data communication lines on the temperature chain.

[0028] The shore terminal system comprises a receiving antenna, a data transmission cable and a data server;

[0029] The receiving antenna is connected with the real-time internal wave observation system, for receiving real-time observation data from the real-time internal wave observation system, and transmitting the received real-time observation data to the data server through the data transmission cable for storage, analysis and display.

[0030] An internal wave observation method of a near-shore real-time internal wave observation system based on three anchors, comprising the following steps:

[0031] 1) According to the tidal level data of the deployment point in previous years, the difference between the maximum tidal level and the minimum tidal level is taken to determine the height of the three-anchor fixing frame system, i.e. the length of the three fixing rods B, so as to ensure that the real-time internal wave observation system is above the water surface regardless of the tidal level;

[0032] 2) According to the tidal level data in previous years, the depth of the lowest tide is taken to determine the length of the temperature chain;

[0033] 3) The three-anchor fixing frame system is laid at the lowest tide to ensure that the three fixing cables are in a taut state regardless of the change of the tide level, and the three-anchor fixing frame system is not horizontally rotated when pulled;

[0034] 4) The real-time internal wave observation system collects the profile temperature data and the depth value at the deepest point through the temperature chain and the depth gauge in real time, and sends the data to the terminal system on the shore in real time; the underwater motor system receives the control instructions sent by the terminal system on the shore, and controls the temperature chain to be released through the underwater motor, so that the temperature chain is in a taut state under the action of the fixing anchor regardless of the tide level;

[0035] 5) The terminal system on the shore receives the real-time observation data from the real-time internal wave observation system through the receiving antenna, transmits the received data to the data server through the data transmission cable for storage and analysis, obtains the profile temperature field, detects whether there is an internal wave, and thus judges whether to provide a warning.

[0036] The present application has the following beneficial effects and advantages:

[0037] 1. The present application can realize complete measurement of internal solitary waves in the ocean for a long time, has high time resolution and spatial resolution, and provides good data for the research of internal waves.

[0038] 2. The present application can realize a comprehensive and stable internal wave warning system at a low cost.

[0039] 3. The present application uses solar energy as the energy source, and can theoretically run indefinitely after being laid. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic diagram of the overall structure of the present application;

[0041] Figure 2 is a schematic diagram of the structure of the three-anchor fixing frame system of the present application;

[0042] Figure 3 is a schematic diagram of the structure of the real-time internal wave observation system of the present application;

[0043] Figure 4 is a schematic diagram of the structure of the terminal system on the shore of the present application;

[0044] Among them, 1 is the three-anchor fixed frame system, 2 is the real-time internal wave observation system, 3 is the shore station terminal system, 101 is the upper circular fixed frame A, 102 is the fixed rod B, 103 is the lower circular buoyancy fixed frame C, 104 is the fixed cable, 105 is the anchor, 201 is the shell, 202 is the acquisition and communication controller, 203 is the fixed rod, 204 is the collar, 205 is the temperature chain, 206 is the depth meter, 207 is the fixed anchor, 301 is the receiving antenna, 302 is the data transmission cable, and 303 is the data server. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] like Figure 1 FIG. 1 is a schematic diagram of the overall structure of the present invention. The present invention is a three-anchor based offshore real-time internal wave observation system, comprising: a three-anchor fixed frame system 1, a real-time internal wave observation system 2 and a shore station terminal system 3;

[0047] The real-time internal wave observation system 2 is fixed in the three-anchor fixing frame system 1 in a sliding connection. Under different sea surface heights, the real-time internal wave observation system 2 moves up and down along the three-anchor fixing frame system 1 and cannot rotate horizontally, thereby ensuring the stability of the observation environment.

[0048] Real-time internal wave observation system 2, used to collect real-time observation data and send the real-time observation data to the shore station terminal system 3 for processing;

[0049] The shore terminal system 3 is used to analyze the received real-time observation data to detect whether there are internal waves, so as to determine whether to provide an early warning.

[0050] like Figure 2 , which is a schematic structural diagram of the three-anchor fixing frame system of the present invention, wherein the three-anchor fixing frame system 1 comprises: an upper circular fixing frame A101, a fixing rod B102, a lower circular buoyant fixing frame C103, a fixing cable 104 and an anchor 105;

[0051] The upper circular fixing frame A101 and the lower circular buoyancy fixing frame C103 are arranged in parallel;

[0052] Three fixing rods B102 are provided between the upper circular fixing frame A101 and the lower circular buoyancy fixing frame C103; the fixing rods B102 are vertically and evenly distributed on the edges of the upper circular fixing frame A101 and the lower circular buoyancy fixing frame C103;

[0053] The upper circular fixing frame A101, the fixing rod B102 and the lower circular buoyancy fixing frame C103 are connected together by welding to form a stable fixing frame;

[0054] A fixing cable 104 is arranged at the connecting position of the lower circular buoyancy fixing frame C103 and the fixing rod B102; the end of each fixing cable 104 is connected with an anchor 105; the three fixing cables 104 and the three anchors 105 stably fix the fixing frame in the water at the low tide position, and the fixing frame keeps in a stable position regardless of the low tide or the high tide.

[0055] The lower circular buoyancy fixing frame C103 is a stainless steel frame wrapped by buoyancy material, which provides buoyancy for the fixing frame of the whole water part, so that the fixing frame can stably float on the water surface.

[0056] The real-time observation data are the profile temperature data and the depth value of the deepest position.

[0057] As shown in Figure 3 Fig. 1, it is a structure schematic diagram of the real-time internal wave observation system, the real-time internal wave observation system 2 comprises a shell 201, a collection and communication controller 202, a fixing rod A 203, a sleeve ring 204, a temperature chain 205, a data collection unit, an underwater motor system and a fixing anchor 207;

[0058] The shell 201 is arranged on the central axis of the three-anchor fixing frame system 1; the collection and communication controller 202 is arranged in the shell;

[0059] The number of the fixing rod A 203 is the same as that of the fixing rod B 102; the fixing rod A 203 is evenly arranged on the shell 201, and the arrangement position is the same as that of the fixing rod B 102;

[0060] The end of the fixing rod A 203 is provided with the sleeve ring 204; the sleeve ring 204 is sleeved on the fixing rod B 102 of the three-anchor fixing frame system 1, so that the shell 201 slides up and down along the central axis of the three-anchor fixing frame system 1;

[0061] One end of the temperature chain 205 is fixedly connected with the bottom of the shell 201, and the other end is connected with the fixing anchor 207; the fixing anchor 207 is used for fixing the real-time internal wave observation system 2 at a position; the data collection unit is arranged on the temperature chain 205;

[0062] The underwater motor system is arranged in the protection shell of the temperature chain 205, and is connected with the collection and communication controller 202, so that when the underwater motor rotates, the control instruction sent by the shore terminal system 3 to the collection and communication controller 202 is received, the temperature chain 205 is controlled to be tensioned or released, the data collection unit on the temperature chain 205 keeps in the same profile, and the temperature chain 205 keeps in the straightened state, so that the temperature field data collected by the temperature chain 205 can meet the internal wave detection requirement.

[0063] The shell 201 is a transparent plastic shell, so that the collection and communication controller 202 can realize solar charging through the sunlight.

[0064] The data acquisition unit comprises a temperature probe and a depth gauge 206 connected with the acquisition and communication controller 202 through data communication lines;

[0065] A plurality of temperature probes are arranged on the chain body of the temperature chain 205 from top to bottom for collecting temperature data of different profiles;

[0066] The depth gauge 206 is arranged in a protective shell at the underwater motor system for collecting depth data to calculate temperature field data at different depths;

[0067] The acquisition and communication controller 202 receives temperature data of different profiles sent by the temperature probes and depth data collected by the depth gauge 206 through two data communication lines on the temperature chain 205.

[0068] As shown in Figure 3 The real-time internal wave observation system 2 further comprises an underwater motor system arranged in the same shell as the depth gauge 206; the underwater motor system transmits temperature data through data communication lines on the temperature chain 205, and provides power for the depth gauge 206 and the underwater motor system and controls rotation of the underwater motor to adjust the distance between the depth gauge and the underwater motor system 206 and the fixed anchor 207.

[0069] The depth data collected by the depth gauge 206 is provided to the acquisition and communication controller 202 to adjust the rotation of the underwater motor system controlled by the underwater motor, so as to adjust the distance between the depth gauge and the underwater motor system 206 and the fixed anchor 207, and keep the depth of the depth gauge at a stable depth, thereby providing a stable environment for the temperature chain 205 to acquire temperature field.

[0070] As shown in Figure 4 The shore terminal system 3 comprises a receiving antenna 301, a data transmission cable 302 and a data server 303.

[0071] The receiving antenna 301 is connected with the real-time internal wave observation system 2 for receiving real-time observation data from the real-time internal wave observation system 2, and transmitting the received real-time observation data to the data server 303 through the data transmission cable 302 for storage, analysis and display.

[0072] As shown in Figure 1 The internal wave observation method of the present application comprises the following steps:

[0073] 1) According to the historical tide data of the deployment point, the height of the three-anchor fixing frame system 1, i.e. the length of the three fixing rods B102, is determined by taking the difference between the maximum tide level and the minimum tide level, so as to ensure that the real-time internal wave observation system 2 is floating above the water surface regardless of the tide level;

[0074] 2) According to the historical tide data, the length of the temperature chain 205 is determined by taking the depth of the lowest tide;

[0075] 3) The three-anchor fixing frame system 1 is deployed at the lowest tide, so as to ensure that the three fixing cables 104 are in a taut state regardless of the change of the tide level, and the three-anchor fixing frame system 1 is not horizontally rotated;

[0076] 4) The real-time internal wave observation system 2 collects the profile temperature data and the depth value at the deepest point in real time through the temperature chain 205 and the depth gauge 206, and sends the data to the shore station terminal system 3 in real time; the underwater motor system receives the control instructions sent by the shore station terminal system 3, controls the tensioning and releasing of the temperature chain 205 through the underwater motor, and ensures that the temperature chain 205 is in a taut state under the action of the fixing anchor 207 regardless of the tide level;

[0077] 5) The shore station terminal system 3 receives the real-time observation data from the real-time internal wave observation system 2 through the receiving antenna 301, transmits the received data to the data server 303 through the data transmission cable 302 for storage and analysis, obtains the profile temperature field, detects whether there is an internal wave, and thus determines whether to provide a warning.

[0078] Those skilled in the art can understand that the above description is only preferred embodiments of the present application, and the features described in the various embodiments and / or claims of the present disclosure can be combined or combined, even if such combination or combination is not explicitly described in the present disclosure. It is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. shall be included in the protection scope of the present application.

[0079] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they understand the basic creative concept. Therefore, the appended claims are intended to include the preferred embodiments and all modifications and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and changes.

Claims

1. A three-anchor based offshore real-time internal wave observation system, characterized in that: include: Three-anchor fixed frame system (1), real-time internal wave observation system (2) and shore station terminal system (3); The real-time internal wave observation system (2) is fixed in the three-anchor fixing frame system (1) in a sliding connection manner. Under different sea surface heights, the real-time internal wave observation system (2) moves up and down along the three-anchor fixing frame system (1) and cannot rotate in the horizontal direction, thereby ensuring the stability of the observation environment. The real-time internal wave observation system (2) is used to collect real-time observation data and send the real-time observation data to the shore terminal system (3) for processing; The shore terminal system (3) is used to analyze the received real-time observation data to detect whether internal waves exist, thereby determining whether to provide an early warning; The three-anchor fixing frame system (1) comprises: an upper circular fixing frame A (101), a fixing rod B (102), a lower circular buoyancy fixing frame C (103), a fixing cable (104) and an anchor (105); The upper circular fixing frame A (101) and the lower circular buoyancy fixing frame C (103) are arranged in parallel; Three fixing rods B (102) are provided between the upper circular fixing frame A (101) and the lower circular buoyancy fixing frame C (103); the fixing rods B (102) are vertically and evenly distributed on the edges of the upper circular fixing frame A (101) and the lower circular buoyancy fixing frame C (103); The upper circular fixing frame A (101), the fixing rod B (102) and the lower circular buoyancy fixing frame C (103) are connected to each other by welding to form a stable fixing frame; A fixing cable (104) is provided at the connection between the lower circular buoyancy fixing frame C (103) and the fixing rod B (102); an anchor (105) is connected to the end of each fixing cable (104); the three fixing cables (104) and the three anchors (105) stably fix the fixing frame in the water at a low tide position, and the fixing frame remains in a stable position regardless of low tide or high tide; The real-time internal wave observation system (2) comprises: a housing (201), an acquisition and communication controller (202), a fixing rod A (203), a collar (204), a temperature chain (205), a data acquisition unit, an underwater motor system and a fixing anchor (207); The housing (201) is arranged on the central axis of the three-anchor fixing frame system (1); the acquisition and communication controller (202) is arranged in the housing; The number of the fixing rods A (203) is the same as the number of the fixing rods B (102); the fixing rods A (203) are evenly distributed on the housing (201), and the layout positions are the same as the layout positions of the fixing rods B (102); The end of the fixing rod A (203) is provided with a collar (204); the collar (204) is sleeved on the fixing rod B (102) of the three-anchor fixing frame system (1), so that the housing (201) slides up and down along the central axis of the three-anchor fixing frame system (1); One end of the temperature chain (205) is fixedly connected to the bottom of the housing (201), and the other end is connected to the fixed anchor (207) to fix the real-time internal wave observation system (2) in one position and keep it unchanged; a data acquisition unit is provided on the temperature chain (205); The underwater motor system is arranged in a protective shell on the temperature chain (205) and is connected to the acquisition and communication controller (202) so as to receive a control instruction sent by the shore terminal system (3) to the acquisition and communication controller (202) when the underwater motor rotates, control the temperature chain (205) to be tightened or released, so that the data acquisition units on the temperature chain (205) are kept in the same cross section, and the temperature chain (205) is ensured to be in a straightened state, so that the temperature field data collected by the temperature chain (205) can meet the internal wave detection requirements; An internal wave observation method based on a three-anchor offshore real-time internal wave observation system includes the following steps: 1) Based on the historical tide level data of the deployment point, the height of the three-anchor fixed frame system (1), i.e., the length of the fixed rod B (102), is determined by taking the difference between the maximum tide level and the minimum tide level to ensure that the real-time internal wave observation system (2) floats above the water surface regardless of the tide level; 2) Based on the tide data of previous years, take the depth of the lowest tide and determine the length of the temperature chain (205); 3) deploying the three-anchor fixing frame system (1) at the lowest tide to ensure that no matter how the tide level changes, the three fixing cables (104) are in a taut state and pulling the three-anchor fixing frame system (1) does not cause horizontal rotation; 4) The real-time internal wave observation system (2) collects the profile temperature data and the deepest depth value in real time through the temperature chain (205) and the depth meter (206), and sends the data to the shore terminal system (3) in real time; the underwater motor system receives the control instructions sent by the shore terminal system (3), and controls the tension or release of the temperature chain (205) through the underwater motor to ensure that the temperature chain (205) is in a taut state under the action of the fixed anchor (207) regardless of the tide level; 5) The shore terminal system (3) receives the real-time observation data from the real-time internal wave observation system (2) through the receiving antenna (301), and transmits the received data to the data server (303) through the data transmission cable (302) for storage and analysis, thereby obtaining the profile temperature field, detecting whether there are internal waves, and determining whether to provide an early warning.

2. The three-anchor offshore real-time internal wave observation system according to claim 1, characterized in that: The lower circular buoyancy fixing frame C (103) is a stainless steel frame wrapped with buoyancy material to provide buoyancy to the entire above-water part of the fixing frame so that the fixing frame can float stably on the water surface.

3. The three-anchor offshore real-time internal wave observation system according to claim 1, characterized in that: The real-time observation data include: profile temperature data and the deepest depth value.

4. The three-anchor offshore real-time internal wave observation system according to claim 1, characterized in that: The housing (201) is a transparent plastic housing, so that the collection and communication controller (202) can be solar-charged by sunlight passing through it.

5. The three-anchor offshore real-time internal wave observation system according to claim 1, characterized in that: The data acquisition unit comprises: a temperature probe and a depth gauge (206) connected to an acquisition and communication controller (202) via a data communication line; A plurality of temperature probes are evenly distributed on the chain body of the temperature chain (205) from top to bottom, for collecting temperature data of different sections; The depth meter (206) is arranged in a protective shell at the underwater motor system and is used to collect depth data to calculate temperature field data at different depths; The acquisition and communication controller (202) receives temperature data of different sections sent by the temperature probe and depth data collected by the depth meter (206) through two data communication lines on the temperature chain (205).

6. The three-anchor offshore real-time internal wave observation system according to claim 1, characterized in that: The shore terminal system (3) comprises: a receiving antenna (301), a data transmission cable (302) and a data server (303); The receiving antenna (301) is connected to the real-time internal wave observation system (2) and is used to receive real-time observation data from the real-time internal wave observation system (2), and transmit the received real-time observation data to the data server (303) via the data transmission cable (302) for storage, analysis and display.

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