Underwater gas release system and method based on water surface wireless control

Abstract

The invention discloses an underwater gas release system and method based on water surface wireless control, and relates to ocean engineering technical equipment. Comprising a gas supply unit, a system underframe, an underwater gas release control unit, an underwater monitoring unit, an underwater environment sensing unit, a gas delivery pipe unit, a water surface and underwater connecting unit, a buoy unit and a water surface wireless control platform. The underwater gas release control unit is connected with an outlet of the gas cylinder; the water surface and underwater connecting unit serves as a connecting cable of the buoy unit and the underwater gas release control unit, the underwater monitoring unit and the underwater environment sensing unit and is used for transmitting power to the underwater gas release control unit, the underwater monitoring unit and the underwater environment sensing unit and performing signal and data transmission; the buoy unit is connected with the water surface and underwater connecting unit; and the water surface wireless control platform is in wireless communication with the buoy unit. The underwater gas release is remotely controlled through the water surface wireless control platform and the buoy unit, manual or robot diving operation is not needed, and the working efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ocean engineering technology equipment, in particular to an underwater gas release system and method based on water surface wireless control. BACKGROUND

[0002] Gas release operation in underwater environment is widely used in underwater experiment simulation, ecological intervention, teaching demonstration, bubble induction and other fields. In recent years, with the increasing demand for fine management of the environment in aquaculture industry, underwater gas release devices have also been introduced into the field of marine biological breeding, such as releasing oxygen to improve water oxygen content, thereby improving the breeding environment and promoting the growth of underwater organisms such as fish, shrimp and shellfish; and releasing carbon dioxide to improve water carbon dioxide solubility, thereby improving the growth environment of underwater plants and promoting the growth of underwater crops such as algae; however, most of the current common underwater gas release devices are simple in structure, and the operation depends on manual or underwater robot, or uses a timing release method, which has the problems of inconvenient operation, poor real-time performance, high safety risk and the like, and is difficult to meet the requirements of modern breeding scenes for remote control, stable and efficient operation.

[0003] Although some systems have introduced gas flow control devices to improve release accuracy, such designs are often complex in structure and high in cost, and for breeding, teaching, experiment and other application scenarios, precise control is not necessary, which affects the economy and practicability of the equipment; therefore, there is an urgent need for an underwater gas release method with moderate function, reliable structure and simple operation, which can realize remote wireless control and has underwater monitoring capability, and is suitable for teaching, experiment and marine breeding and other application environments.

[0004] At present, there is still a lack of an underwater gas release system that integrates gas supply (such as oxygen cylinder, carbon dioxide cylinder, etc.), release control, underwater video monitoring and water surface wireless remote control functions, and takes into account the installation flexibility and use convenience; especially in the marine breeding scene, higher requirements are put forward for the visibility, timeliness and controllability of gas release; therefore, it is necessary to develop a wireless control underwater gas release system that is simple and easy to use, high in integration, and suitable for small and medium-sized breeding or experimental environment, so as to improve the operation efficiency and operation safety, and meet the diversified actual application needs. SUMMARY

[0005] The present application aims to overcome the deficiencies of the existing underwater gas release device in remote control, real-time monitoring, system integration and operation convenience, and provides an underwater gas release system and method based on water surface wireless control, which is reasonable in structure, simple in operation, and can realize water surface remote control and real-time visual feedback. The present application can not only realize remote control of underwater gas release and control of gas release flow, but also can realize real-time observation of underwater gas release.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] An underwater gas release system based on surface wireless control includes: a gas supply unit, a system base frame, an underwater gas release control unit, an underwater monitoring unit, an underwater environment sensing unit, a gas transmission pipe unit, a surface-underwater connection unit, a buoy unit, and a surface wireless control platform.

[0008] The gas supply unit is used to provide the gas source required for gas release, and the gas supply unit is fixed on the system base frame;

[0009] The system chassis is used to support the gas supply unit, underwater gas release control unit, underwater monitoring unit, underwater environment sensing unit, and gas transmission pipe unit;

[0010] The underwater gas release control unit is connected to the gas outlet of the gas supply unit and is used to control the release and flow rate of the gas.

[0011] The underwater monitoring unit is used to capture real-time images of underwater gas release and system status.

[0012] The underwater environment sensing unit is used to sense underwater depth, water temperature, and water pH.

[0013] The gas supply pipe unit is connected to the underwater gas release control unit and is used to transmit and release the gas from the gas supply unit into the water.

[0014] The surface and underwater connection unit serves as a connecting cable between the buoy unit and the underwater gas release control unit, the underwater monitoring unit, and the underwater environmental sensing unit, and is used to transmit power, control signals, and data.

[0015] The buoy unit is connected to the surface and underwater connection unit and is used to power the underwater gas release control unit, the underwater monitoring unit and the underwater environmental sensing unit, as well as to serve as a signal and data transmission transfer point between the surface wireless control platform and the underwater gas release control unit, the underwater monitoring unit and the underwater environmental sensing unit.

[0016] The surface wireless control platform is used to communicate wirelessly with the buoy unit, send control commands and receive underwater video, positioning information and information from pressure sensors, temperature sensors and pH sensors.

[0017] Through the coordinated operation of the above modules, remote control and real-time observation of the underwater gas release process can be achieved on the water surface platform.

[0018] Furthermore, the gas supply unit includes a gas cylinder, a shock-absorbing pad, and a shock-absorbing ring; the gas cylinder is provided with shock-absorbing pads at both the top and bottom, the shock-absorbing pads are in close contact with the gas cylinder and the system base frame, and the gas cylinder is fitted with a shock-absorbing ring, which is connected to the system base frame through a flexible connector to form a double fixation.

[0019] Furthermore, the system base frame is a cubic frame structure, which includes vertical bars and diagonal bars inside, together forming an installation space for fixing the gas cylinder and the motor in the underwater gas release control unit.

[0020] Furthermore, the underwater gas release control unit includes a fine-tuning valve, a motor, a motor bracket, a stainless steel motor shaft reducing coupling, and a flow meter; the fine-tuning valve is connected to the gas outlet of the gas cylinder; the motor is connected to the fine-tuning valve through the stainless steel motor shaft reducing coupling to drive the opening and closing of the fine-tuning valve, thereby controlling the gas release flow rate; the motor bracket is connected to the system base and the motor through screws and nuts, thereby fixing the motor to the system base; the flow meter is located at the gas outlet of the fine-tuning valve.

[0021] Furthermore, the underwater monitoring unit includes at least two underwater cameras; wherein the first underwater camera is positioned diagonally upward to observe the gas release situation; and the second underwater camera is positioned diagonally downward to observe the working status of the underwater gas release control unit and the sinking status of the system base.

[0022] Furthermore, the underwater environment sensing unit includes a pressure sensor, a temperature sensor, and a pH sensor fixed on the system base; the pressure sensor is located at the lower edge of the base and is used to sense the underwater depth; the temperature sensor is located at the upper edge of the base and is used to sense the water temperature; the pH sensor is located at the upper edge of the base and is used to sense the acidity or alkalinity of the water; finally, the pressure / depth, temperature, and pH data are transmitted back to the buoy control board.

[0023] Furthermore, the gas supply pipe unit includes multiple annular PU hoses of different diameters arranged coaxially, with multiple gas release holes drilled on the annular PU hoses; the multiple annular PU hoses are interconnected through rigid pipes and connectors, and are connected to the gas outlet of the underwater gas release control unit via a multi-way connector.

[0024] Furthermore, the buoy unit includes a buoy body, a sealed chamber, and a power supply module, a motor driver, two TTL to RS485 converters, a pH detection and acquisition module, a satellite positioning sensor, a buoy wireless transmission module, and a buoy control board housed within the sealed chamber; the sealed chamber is fixed to the buoy body by a support structure. The buoy control board is used to process commands from the surface wireless control platform, control the motor driver, receive video data from the underwater camera, receive underwater sensor data and satellite positioning information, and communicate with the surface wireless control platform through the buoy wireless transmission module.

[0025] Furthermore, the surface wireless control platform includes a display screen, a central control unit, a platform wireless transmission module, and multiple control buttons; the control buttons include at least a button for adjusting the gas release flow rate and a confirmation button for confirming and executing gas release control; the central control unit is used to communicate with the buoy unit through the platform wireless transmission module and to receive and display underwater video, underwater sensor data, and buoy position information.

[0026] A method for underwater gas release based on wireless surface control, employing the aforementioned system, includes the following steps:

[0027] 1) Send gas release control commands via a surface wireless control platform;

[0028] 2) The buoy unit receives the command and drives the motor of the underwater gas release control unit through the surface and underwater connection unit to adjust the opening of the fine-tuning valve and control the gas release;

[0029] 3) The underwater monitoring unit captures real-time images of gas release and system status, and transmits the video data back to the buoy unit via the surface-to-underwater connection unit;

[0030] 4) The underwater environment sensing unit detects underwater pressure / depth, water temperature and pH value in real time, and transmits the pressure / depth and temperature data back to the buoy unit through the surface-underwater connection unit;

[0031] 5) The buoy unit wirelessly transmits video data, pressure / depth data, temperature data, pH data, and its own positioning information to the surface wireless control platform;

[0032] 6) The surface wireless control platform displays underwater video, pressure / depth, temperature, pH value and latitude and longitude information in real time, allowing operators to monitor and adjust gas release parameters as needed.

[0033] Effective technical effects of the present invention:

[0034] Wireless remote control: The release of underwater gas can be remotely controlled through a wireless control platform and buoy unit on the surface, eliminating the need for manual or robotic diving operations, thus improving work efficiency and safety.

[0035] Real-time video monitoring: Enables operators to observe the release status in real time, enhancing the system's visualization capabilities;

[0036] Multi-parameter environmental perception: The system has the function of real-time monitoring of underwater temperature, pressure (depth) and pH value. Sensor data is synchronously transmitted back to the surface wireless control platform for centralized display through the same communication link, providing key environmental information support for operational decision-making;

[0037] Simple structure and moderate cost: It does not pursue complex and precise flow control, but focuses on basic adjustment capabilities, making it suitable for teaching, experimentation, simulation and other scenarios;

[0038] Easy to deploy and maintain: The base frame adopts a standardized rod assembly structure with universal connectors, which facilitates quick assembly and component replacement;

[0039] High stability: The system's mechanical stability and safety during underwater operation are ensured through fixing devices and shock-resistant structures. Attached Figure Description

[0040] Figure 1 This is one of the overall structural schematic diagrams of the system embodiment described in this invention;

[0041] Figure 2 This is a second schematic diagram of the overall structure of the system embodiment described in this invention;

[0042] Figure 3 This is the third schematic diagram of the overall structure of the system embodiment described in this invention;

[0043] Figure 4 This is a schematic diagram of the chassis structure of the system described in this invention;

[0044] Figure 5 This is a schematic diagram of the underwater gas release control unit structure of the system described in this invention;

[0045] Figure 6 This is a schematic diagram of the underwater monitoring unit structure of the system described in this invention;

[0046] Figure 7 This is a schematic diagram of the gas pipeline unit structure of the system described in this invention;

[0047] Figure 8 This is a diagram showing the location of the backflow preventer in the gas pipeline unit of the system described in this invention;

[0048] Figure 9 This is a schematic diagram of the internal structure of the sealed chamber of the buoy unit in the system described in this invention;

[0049] Figure 10 This is a schematic diagram of the surface wireless control platform structure of the system described in this invention;

[0050] Figure 11 This is an overall flowchart of the method described in this invention;

[0051] Figure 12 This is the power supply scheme for the system described in this invention.

[0052] Figures 1-10 Each of the following is marked as:

[0053] 100-Gas supply unit; 101-Gas cylinder; 102-Anti-vibration pad; 103-Anti-vibration ring; 200-Base frame; 201-Wire mesh; 202-Vertical support rod; 203-Modible vertical support rod; 204-Horizontal bar; 205-Diagonal bar; 206-Lifting hook; 300-Underwater gas release control unit; 301-Fine-adjusting valve; 302-Motor; 303-Motor bracket; 304-Stainless steel motor shaft reducing coupling; 305-Flow meter; 400-Underwater monitoring unit; 401-Underwater camera; 402-Underwater camera mounting bracket; 500-Underwater environment sensing unit; 501-Temperature sensor; 502-Pressure sensor; 503-pH sensor; 600-Gas delivery pipe unit; 601-Annular PU hose; 602-Rigid pipe; 603- PU hose tee connector; 604-cross-shaped air supply pipe connector; 605-right-angle air supply pipe connector; 606-air supply pipe; 607-one-to-four-to-five-way connector; 608-backflow preventer; 700-surface and underwater connection unit; 701-underwater dedicated cable; 702-waterproof cable connector; 800-buoy unit; 801-buoy body; 802-sealed chamber; 803-antenna; 804-motor driver; 805-TTL to RS485 module; 806 -PH detection and acquisition module; 807-Satellite positioning sensor; 808-Buoy wireless transmission module; 809-Buoy control board; 810-Power supply module; 811-Support column; 812-Support plate; 900-Surface wireless control platform; 901-Sealed housing; 902-Power on / off button; 903-Screen; 904-Camera switching button; 905-Increase gas release button; 906-Decrease gas release button; 907-Confirm control gas release button. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Rather, the invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of the invention as defined by the claims. Furthermore, to provide the public with a better understanding of the invention, certain specific details are described in detail below. Those skilled in the art will fully understand the invention even without these detailed descriptions.

[0055] See Figures 1-10 In a preferred embodiment of the present invention, the gas supply unit 100 includes a gas cylinder 101, a shock-absorbing pad 102, and a shock-absorbing ring 103. The gas cylinder 101 is used to provide the gas source required for gas release. The gas cylinder 101 is fixed in the internal space formed by four movable vertical support rods 203 inside the system base frame 200. The gas cylinder 101 is fitted with a shock-absorbing ring 103. The whole formed by the gas cylinder 101 and the shock-absorbing ring 103 is tightly squeezed and fixed by the four movable vertical support rods 203. The gas cylinder 101 is provided with shock-absorbing pads 102 at the top and bottom. The shock-absorbing pads 102 are in close contact with the gas cylinder 101 and the system base frame 200, which can further stabilize the position of the gas cylinder to prevent displacement or shaking during underwater operation.

[0056] The system base frame 200 has a cubic frame structure, which is welded together by four outer vertical support rods 202, four inner movable vertical support rods 203, fourteen horizontal bars 204 (six at the top and bottom forming a grid pattern, and two horizontal bars in the upper middle part used to support the diagonal bars), one diagonal bar 205, and five lifting hooks 206. The top of the system base frame 200 is covered with wire mesh 201 and five lifting hooks 206 are welded on it. The five lifting hooks 206 are respectively located at the four corners and the center of the top of the system base frame 200. The system base frame 200 supports the gas supply unit 100, the underwater gas release control unit 300, the underwater monitoring unit 400, the underwater environment sensing unit 500, and the gas pipeline unit 600. Four movable vertical support rods 203 inside the system base frame 200, together with the top and bottom horizontal bars 204, form the space for placing the gas cylinder 101. The movable vertical support rods 203 can move along the top and bottom horizontal bars 204, and the diagonal bars 205 are used to fix the motor 302. In this embodiment, the system base frame 200 is a 1.5m × 1.5m × 1.5m cubic frame, and the length of each of the eight vertical support rods 202 and 203 is 1.5m.

[0057] The underwater gas release control unit 300 includes a fine-tuning valve 301, a motor 302, a motor bracket 303, a stainless steel motor shaft reducing coupling 304, and a flow meter 305. The motor bracket 303 is connected to the motor 302 and the diagonal bar 205 in the system base frame 200 via screws and nuts, thereby fixing the motor 302 to the diagonal bar 205. The motor 302 is connected to the fine-tuning valve 301 via the stainless steel motor shaft reducing coupling 304. The motor driver 804 receives control signals from the buoy unit 800 and drives the motor 302 to rotate the fine-tuning valve 301, thereby realizing gas on / off control. The fine-tuning valve 301 is connected to the gas outlet of the gas cylinder 101, and the gas outlet of the fine-tuning valve 301 is connected to the flow meter 305. The release status can be observed and adjusted before entering the water. In this embodiment, the motor can be a DC geared motor with an IP68 waterproof rating, 18 revolutions per minute, and high torque (such as a ZFY60-127 dustproof planetary geared DC motor).

[0058] The underwater monitoring unit 400 includes two underwater cameras 401 and two underwater camera mounts 402. The two underwater cameras 401 are used to capture underwater images in real time. Both cameras are fixed to the camera mounts 402 by ropes and mounted on the top of the base frame 200. One underwater camera 401 is mounted on the upper edge of the base frame 200, angled upwards, to observe gas release. The other underwater camera 401 is mounted on the lower horizontal bar of the base frame 200, angled downwards, to observe whether the motor 302 is working and whether the base frame 200 has sunk to the bottom. The image signal is transmitted to the buoy control board 809 via the surface-underwater connection unit 700. The underwater cameras 401 can be IP68-rated industrial waterproof underwater cameras. Ideally, for water depths less than 30 meters, a USB driverless underwater high-definition camera (such as the YBR-U304 model) can be used. For depths greater than 30 meters, a network camera (such as the RDM-2100 model) with a resolution of 640 or higher should be used. 480. A frame rate of 20 frames per second or higher is acceptable.

[0059] The underwater environment sensing unit 500 includes a temperature sensor 501, a pressure sensor 502, and a pH sensor 503 fixed on the system base 200. The temperature sensor 501 is used to sense the water temperature; the pressure sensor 502 is used to sense the underwater pressure / depth; and the pH sensor 503 is used to sense the acidity or alkalinity of the water. Each sensor is fixed in a suitable position on the system base 200 to ensure accurate sensing. Finally, the pressure / depth, temperature data, and pH value data are transmitted back to the buoy control board 809. In this embodiment, temperature sensor 501 is located on the upper edge of the base frame; pressure sensor 502 is located on the lower edge of the base frame; pH sensor 503 is located on the upper edge of the base frame. In this embodiment, temperature sensor 501 is a PT100 submersible temperature transmitter made of 304 stainless steel, with an IP68 waterproof rating and RS485 communication. Pressure sensor 502 is a submersible level transmitter, product model TFD-803A, with a 304 stainless steel shell and a 316L stainless steel core, an IP68 waterproof rating, and RS485 communication. pH sensor 503 is connected to pH detection and acquisition module 806 (BNC to UART module) using pH electrode E-201-C.

[0060] The gas delivery pipe unit 600 is used to transfer and release gas from the gas cylinder into the water. The gas delivery pipe unit 600 is set on the top of the system base frame 200 and is composed of three ring-shaped PU hoses 601 with different diameters (1.6m, 1.2m, 0.8m), four rigid pipes 602, four gas delivery pipes 606, a backflow preventer 608, and pipe connectors, forming a gas channel. The three ring-shaped PU hoses 601 with different diameters are coaxially arranged and sleeved on the top of the system base frame 200. The cross-sectional dimensions of the three ring-shaped PU hoses 601 with different diameters are all 16mm outer diameter and 12mm inner diameter. Each ring-shaped PU hose 601 has several (such as several to hundreds) small gas release holes drilled on it. The three ring-shaped PU hoses 601 with different diameters are connected to multiple rigid pipes 602 through PU hose tee connectors 603, cross-shaped gas delivery pipe connectors 604, and right-angle gas delivery pipe connectors 605, respectively, to form an annular bubble distribution system. The rigid pipe 602 is then connected to the backflow preventer 608 and the gas outlet of the fine-tuning valve 301 via the gas delivery pipe 606 and the one-to-four-five-way connector 607. One end of the one-to-four-five-way connector 607 is connected to the gas outlet of the flow meter 305, the inlet end of the flow meter 305 is connected to the gas outlet of the fine-tuning valve 301, and the other four ends are connected to the gas delivery pipe 606. This allows the gas cylinder 101 to be split into four outputs, enabling simultaneous multi-point release. In this embodiment, the PU hose tee connector 603 has dimensions of 16mm-10mm-16mm; the cross-shaped gas delivery pipe connector 604 has an outer diameter of 10mm; the right-angle gas delivery pipe connector 605 has an outer diameter of 10mm; the rigid pipe 602 has an outer diameter of 10mm and an inner diameter of 8mm; and the gas delivery pipe 606 has an outer diameter of 10mm and an inner diameter of 6.5mm. The fine-tuning valve 301 can be a 304 stainless steel straight-through external thread fine-tuning valve. The backflow preventer 608 may be a one-way check valve, such as an AQTCV.

[0061] The surface-to-underwater connection unit 700 is used to establish power, signal, and data transmission connections between the buoy unit 800 and the underwater equipment's underwater gas release control unit 300, underwater monitoring unit 400, and underwater environmental sensing unit 500. The surface-to-underwater connection unit 700 consists of two dedicated underwater cables 701 and two waterproof cable connectors 702. The dedicated underwater cables 701 are composite cables containing power supply conductors and signal harnesses, featuring double-layer insulation sheaths and excellent resistance to water pressure, corrosion, and flexibility, allowing for prolonged immersion in fresh or seawater environments. The waterproof cable connectors 702 connect the buoy's sealed compartment to the system base frame, employing a quick-connect structure. The connectors are equipped with sealing rings and threaded locking devices to ensure no water leakage or detachment during long-term underwater use. The waterproof cable connectors 702 can utilize miniature watertight connectors from Ocean Sail Technology Co., Ltd.

[0062] The buoy unit 800 includes a buoy body 801, a power supply module 810, a motor driver 804, two TTL-to-RS485 modules 805, a pH detection and acquisition module 806, a satellite positioning sensor 807, an antenna 803, a buoy wireless transmission module 808, a buoy control board 809, and a sealed chamber 802. The buoy body 801 carries the power supply module 810, the motor driver 804, the two TTL-to-RS485 modules 805, the pH detection and acquisition module 806, and the satellite positioning sensor 807. 7. The antenna 803, buoy wireless transmission module 808, buoy control board 809, and sealed chamber 802 are used to make them float on the water surface; the power supply module 810 is used to provide the power required by the underwater gas release control unit 300, underwater monitoring unit 400, underwater environment sensing unit 500, and other electronic devices inside the sealed chamber 802; one end of the motor driver 804 is connected to the motor 302 through the surface-underwater connection unit 700, and the other end is connected to the buoy control board 809, according to the buoy unit 803. The 00 receives commands from the surface wireless control platform 900 to drive the motor 302; the two TTL to RS485 converter modules 805 are both connected to the temperature sensor 501 and the pressure sensor 502 via the underwater surface connection unit 700 via their RS485 terminals, and connected to the UART serial port of the buoy control board 809 via their TTL terminals (UART terminals). They serve as communication conversion modules between the buoy control board and the sensors, enabling bidirectional conversion between TTL level and RS-485 differential signals to carry UART signals. ART protocol data; one end (BNC connector end) of the pH detection and acquisition module 806 is connected to the pH sensor 503 via the underwater surface connection unit 700, and the other end is connected to the UART serial port of the buoy control board 809. This module serves as a communication conversion module between the buoy control board 809 and the pH sensor 503, converting the output of the pH sensor 503 to TTL level and sending it to the UART serial port of the buoy control board 809; the satellite positioning sensor 807 (which can be the ATGM332D from Zhongke Microelectronics) The GPS+BDS module and antenna 803 together form a satellite positioning module, which is used to obtain the latitude and longitude information of the buoy unit 800; the buoy wireless transmission module 808 is connected to the buoy control board 809 for wireless transmission; the buoy control board 809 is used to receive instructions sent by the central control unit (which can be a rk3568 development board) on the surface wireless control platform 900, and controls the output of the motor driver 804 through the instructions. The motor driver 804 drives the motor 302 through the surface and underwater connection unit 700 to rotate the fine-tuning valve 301, thereby controlling the gas output of the gas cylinder 101;The buoy control board 809 is used to receive the images transmitted back by the underwater camera 401 and the data obtained by the temperature sensor 501, pressure sensor 502, and pH sensor 503 through the surface-underwater connection unit 700, and to wirelessly transmit the images and data obtained by the temperature sensor 501, pressure sensor 502, and pH sensor 503 back to the surface wireless control platform 900 for real-time display. At the same time, the buoy control board 809 is used to read the information of the satellite positioning module and wirelessly transmit the latitude and longitude information of the buoy unit 800 back to the surface wireless control platform 900. The sealed chamber 802 is fixed on the buoy 801 and is used to encapsulate the motor driver 804, two TTL to RS485 modules 805, pH detection and acquisition module 806, satellite positioning sensor 807, buoy wireless transmission module 808, buoy control board 809, power supply module 810, support column 811, and support plate 812. The antenna 803 is partially exposed on the upper part of the sealed chamber 802 to ensure satellite signal reception. The power supply module 810 is clamped between two support plates 812 and supported and fixed by four pillars 811, which are respectively located at the four corners of the support plates 812. The buoy unit 800 as a whole has good waterproof performance and floating stability. In this embodiment, the buoy wireless transmission module 808 can be a WiFi long-range image transmission module (such as Huahu's H300). The power supply module 810 consists of a 24V, 20AH lithium battery pack, a switch knob, a 24V to 12V module, and a 24V to 5V module. The buoy control board can be a RK3568 development board. The motor driver 804 can be a BTS7960 driver.

[0063] The surface wireless control platform 900 is used for wireless communication with the buoy unit. The surface wireless control platform 900 includes a sealed housing 901, five control buttons, and a display screen 903. The sealed housing 901 contains a central control unit, a platform wireless transmission module (which can use a WiFi long-distance image transmission module, such as Huahu's H300, paired with the buoy wireless transmission module 808), and a power supply module. The central control unit is used to send gas release commands to the buoy control board 809 via the platform wireless transmission module, and to receive images captured by the underwater camera 401 and data sensed by the underwater environment sensing unit 500, as well as the buoy latitude and longitude information transmitted by the buoy control board 809, to drive the display screen 903 to display the captured images. The platform wireless control platform 900 includes a sealed housing 901, five control buttons, and a display screen 903. The wired transmission module is connected to the central control board for wireless transmission; the power supply module consists of a 12V, 12800mAh switching lithium battery and a 12V-to-5V module, used to power the central control unit, the platform wireless transmission module, and the display screen 903; the five control buttons are the power on / off button 902, the camera switching button 904, the gas release increase button 905, the gas release decrease button 906, and the gas release control confirmation button 907, used to control the on / off state, switch the display screen, and control the underwater gas release and release amount; the display screen 903 is used to display in real time the images captured by the underwater camera 401 transmitted back by the buoy control board 809 and the data sensed by the underwater environment sensing unit 500, and finally present them on the display screen in real time, which is convenient for the operator to make remote decisions.

[0064] The entire system is designed with a modular structure, making it simple to construct and easy to assemble. It is suitable for various teaching demonstrations, underwater observations, simulation experiments, and other scenarios. It also has the advantages of controllable cost, flexible use, and intuitive operation.

[0065] In practical applications, users can control the system from the shore or on a floating platform via a wireless control platform on the water. After the system is powered on, the buoy automatically establishes communication, the underwater camera starts transmitting, and the operator can judge the release effect based on the image. The operator can also control the gas to open or close and the gas flow rate through button commands, realizing remote control and visual feedback throughout the entire process.

[0066] The method for implementing the underwater gas release system based on wireless surface control, using the system as described, achieves remote, visual, and controllable underwater gas release through hardware and software collaboration. The specific implementation steps of this method are as follows, and the flowchart can be found here. Figure 11 :

[0067] Step 1: System Assembly and Inspection

[0068] Check whether the gas cylinder 101 is securely installed at the bottom center of the system base frame 200 via the movable vertical support rod 203, and whether the gas cylinder anti-vibration pad 102 and anti-vibration ring 103 are reliably fixed; confirm that the underwater camera 401 is installed on the top of the system base frame 200 via the underwater camera mounting bracket 402, and that the lens angles correspond to the gas release area and the working area of ​​the motor 302 respectively; check whether the underwater environment sensing unit 500 is reliably fixed to the system base frame 200; check whether the connection of the three-ring PU hose 601, rigid pipe 602, gas supply pipe 606 and one-to-four-five connector 607 of the gas supply pipe unit 600 is sealed and that there is no leakage in the gas channel; verify whether the connection of the underwater dedicated cable 701 and waterproof cable connector 702 of the surface and underwater connection unit 700 to the buoy unit 800 and the system base frame 200 is firm and whether the waterproof performance meets the standards.

[0069] Step 2: Underwater Deployment of the System

[0070] The entire system is slowly lowered to the target water area using the lifting hook 206 on the top of the system base 200, ensuring that the buoy unit 800 floats on the water surface and the system base 200 sinks steadily to the bottom; observe the working status of the antenna 803 and satellite positioning sensor 807 of the buoy unit 800 to confirm that they can receive satellite signals normally and provide latitude and longitude information.

[0071] Step 3: Startup and Communication Establishment

[0072] Turn on the power button 902 of the surface wireless control platform 900 to start the internal central control unit and the platform wireless transmission module; after the buoy wireless transmission module 808 of the buoy unit 800 establishes a wireless connection with the platform, the display screen 903 will display in real time the images transmitted by the underwater camera 401, the data transmitted by the temperature sensor 501, the pressure sensor 502, the pH sensor 503, and the latitude and longitude information of the buoy unit 700.

[0073] Step 4: Gas Release Control

[0074] Pressing the button to increase gas release 905 or the button to decrease gas release 906 sends the command wirelessly to the buoy control board 809. The buoy control board 809 drives the motor driver 804, which in turn controls the motor 302 to rotate the fine-tuning valve 301, adjusting the gas output of the gas cylinder 101. The gas output value is observed through the flow meter 305, and combined with the gas release image captured by the underwater camera 401, the gas release control button 907 is pressed to complete the precise control.

[0075] Step 5: Monitoring and Ending Operation

[0076] The underwater scene and positioning information are continuously monitored through the display screen 903. If it is necessary to switch the camera view, press the camera switch button 904. After the gas release task is completed, press the power on / off button 902 of the wireless control platform to shut down the system. The system is then retrieved to the water surface by the lifting hook 206 to complete the entire operation process.

[0077] refer to Figure 12 The power supply scheme of the system described in this embodiment of the invention is as follows:

[0078] This system adopts a dual power supply architecture, which combines centralized power supply for the buoy unit with independent power supply for the surface wireless control platform, ensuring stable power supply to the underwater unit and the surface control unit without interference.

[0079] 1) Power supply for buoy unit: The power supply module 810 inside the buoy unit 800 is the core power source for the entire underwater system. It uses a 24V, 20AH high-capacity lithium battery pack as the original power source, and is equipped with a 24V to 12V module and a 24V to 5V module to achieve voltage adaptation. Among them, the 24V voltage directly powers the motor driver 804, temperature sensor 501, and pressure sensor 502, while the 12V voltage powers the underwater camera 401 and the buoy wireless transmission module 808. The 5V / 3.3V voltage output by the buoy control board 809 powers the TTL to RS485 module 805, pH detection and acquisition module 806, and satellite positioning sensor 807. The power supply for all underwater units is transmitted through the underwater dedicated cable 701 in the surface-to-underwater connection unit 700. The cable integrates an independent power supply wire to ensure safe and reliable power transmission.

[0080] 2) Power supply for the surface wireless control platform: The surface wireless control platform 900 adopts an independent power supply design, with a 12V, 12800mAh switching lithium battery as the core power supply, and a 12V to 5V module to provide a stable 5V working voltage for the central control unit and display screen 903, and a stable 12V working voltage for the platform's wireless transmission module.

[0081] 3) Power supply guarantee measures: The power supply module 810 of the buoy unit and the power supply module of the surface wireless control platform both integrate overcurrent, overvoltage and reverse connection protection circuits. The power supply module of the buoy unit is encapsulated in a sealed chamber 802, which has waterproof and corrosion-resistant capabilities. At the same time, both power supply modules are equipped with power monitoring functions. The remaining power information can be transmitted to the display screen 903 of the surface wireless control platform through the corresponding control unit, so that the operator can keep abreast of the power supply status and replace or recharge it in time.

[0082] This invention enables the control of underwater gas release from a surface wireless control platform, and allows real-time observation of underwater conditions from the surface wireless control platform via an underwater monitoring unit and an underwater environment sensing unit. This invention offers advantages such as simple structure, moderate cost, ease of deployment and maintenance, and high stability, effectively solving problems such as inconvenient operation, poor real-time performance, and lack of monitoring in existing technologies. It is particularly suitable for scenarios such as aquaculture, underwater experiments, and educational demonstrations.

[0083] The above embodiments are merely preferred embodiments of the present invention and should not be considered as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An underwater gas release system based on wireless surface control, characterized in that... include: Gas supply unit, system base frame, underwater gas release control unit, underwater monitoring unit, underwater environment sensing unit, gas transmission pipe unit, surface and underwater connection unit, buoy unit and surface wireless control platform; The gas supply unit is used to provide the gas source required for gas release; the gas supply unit is installed on the system base frame; The system chassis is used to support the gas supply unit, the underwater gas release control unit, the underwater monitoring unit, the underwater environment sensing unit, and the gas transmission pipe unit. The underwater gas release control unit is connected to the gas outlet of the gas supply unit and is used to control the release and output of gas. The underwater monitoring unit is used to observe the release of gas underwater; The underwater environment sensing unit is used to acquire the water environment conditions in real time and transmit them back to the surface wireless control platform for display. The gas transmission pipe unit is used to transmit and release gas from the gas supply unit into the water; the gas transmission pipe unit is connected to the underwater gas release control unit. The surface-to-underwater connection unit serves as a connection component between the buoy unit and the underwater gas release control unit, the underwater monitoring unit, and the underwater environmental sensing unit. It is used to transmit power to the underwater gas release control unit, the underwater monitoring unit, and the underwater environmental sensing unit, and to transmit signals and data. The buoy unit is connected to the surface and underwater connection unit and is used to power the underwater gas release control unit, the underwater monitoring unit and the underwater environmental sensing unit, as well as to serve as a signal and data transmission transfer point between the surface wireless control platform and the underwater gas release control unit, the underwater monitoring unit and the underwater environmental sensing unit. The surface wireless control platform is used for wireless communication with the buoy unit.

2. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The gas supply unit includes a gas cylinder, a shock-absorbing pad, and a shock-absorbing ring. The gas cylinder is equipped with shock-absorbing pads at both the top and bottom. The shock-absorbing pads are in close contact with the gas cylinder and the system base frame. The gas cylinder is fitted with a shock-absorbing ring, which is connected to the system base frame through a flexible connector to form a double fixation.

3. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The system base frame is a cubic frame structure, with a wire mesh covering the top and a lifting hook welded on it; the interior of the system base frame includes vertical and diagonal rods, which together form the installation space for fixing the gas cylinder and the motor in the underwater gas release control unit.

4. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The underwater gas release control unit includes a fine-tuning valve, a motor, a motor bracket, a stainless steel motor shaft reducing coupling, and a flow meter. The fine-tuning valve is connected to the gas outlet of the gas cylinder. The motor is connected to the fine-tuning valve via the stainless steel motor shaft reducing coupling to drive the opening and closing of the fine-tuning valve, thereby controlling the gas release flow rate. The motor bracket is connected to the system base and the motor via screws and nuts, thereby fixing the motor to the system base. The flow meter is located at the gas outlet of the fine-tuning valve.

5. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The underwater monitoring unit includes two underwater cameras and two underwater camera mounts; both underwater camera mounts are fixed to the top of the system base frame by cables; one underwater camera is set at an angle upwards to observe the gas release situation; the other underwater camera is set at an angle downwards to observe the working status of the underwater gas release control unit and the sinking status of the system base frame.

6. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The underwater environment sensing unit includes a pressure sensor, a temperature sensor, and a pH sensor fixed on the system base frame; the pressure sensor is located at the lower edge of the base frame and is used to sense the underwater depth; the temperature sensor is located at the upper edge of the base frame and is used to sense the water temperature; the pH sensor is located at the upper edge of the base frame and is used to sense the acidity or alkalinity of the water.

7. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The gas supply pipe unit includes multiple coaxially arranged annular PU hoses of different diameters, as well as a rigid pipe, a gas supply pipe, a backflow preventer, and pipe connectors to form a gas channel. The annular PU hoses are installed on the top of the system base frame, and each annular PU hose has several small gas release holes drilled on it. The multiple annular PU hoses of different diameters are interconnected through the rigid pipe and connectors, and are connected to the gas outlet of the underwater gas release control unit via a multi-way connector. The surface and underwater connection unit consists of a dedicated underwater cable and a waterproof cable connector.

8. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The buoy unit includes a buoy, a power supply module, a motor driver, two TTL to RS485 converters, a pH detection and acquisition module, a satellite positioning sensor, an antenna, a buoy wireless transmission module, a buoy control board, and a sealed chamber. One end of the motor driver is connected to the motor via an underwater surface connection unit, and the other end is connected to the buoy control board. The two TTL to RS485 converter modules are configured such that one end is connected to a temperature sensor via an underwater surface connection unit, and the other end is connected to the buoy control board; the other end is connected to a pressure sensor via an underwater surface connection unit, and the other end is connected to the buoy control board. Both modules serve as communication conversion modules between the buoy control board and the sensors, enabling bidirectional conversion between TTL level and RS-485 differential signals to carry UART protocol data. One end of the pH detection and acquisition module is connected to the pH sensor via an underwater surface connection unit, and the other end is connected to the buoy control board. It is used as a communication conversion module between the buoy control board and the pH sensor, converting the output of the pH sensor into TTL level and sending it to the UART serial port of the buoy control board. The satellite positioning sensor and antenna together form a satellite positioning module; The buoy control board is used to receive instructions sent by the central control unit on the surface wireless control platform, and to control the output of the motor driver through the instructions; The motor driver drives the motor to rotate the fine-tuning valve through the surface and underwater connection unit, thereby controlling the gas output of the gas cylinder; The buoy control board is used to receive the images transmitted back by the underwater camera through the surface-underwater connection unit, and to wirelessly transmit the images back to the surface wireless control platform for real-time display. The buoy control board is also used to receive the depth, temperature and pH value sensed by the underwater environment sensing unit through the surface and underwater connection unit, and to wirelessly transmit these data back to the surface wireless control platform for real-time display. The buoy control board is also responsible for reading information from the satellite positioning module and wirelessly transmitting the latitude and longitude information of the buoy unit back to the surface wireless control platform. The sealed chamber is fixed on the buoy and is used to encapsulate the power supply module, motor driver, two TTL to RS485 modules, pH detection and acquisition module, satellite positioning sensor, buoy wireless transmission module, and buoy control board.

9. The underwater gas release system based on wireless surface control according to claim 1, characterized in that, The surface wireless control platform includes a sealed housing, multiple control buttons, and a display screen; The sealed housing contains a central control unit, a platform wireless transmission module, and a power supply module. The platform's wireless transmission module is connected to the central control board; The power supply module is electrically connected to the central control unit and the platform wireless transmission module; The plurality of control buttons include at least a power on / off button for the wireless control platform, a camera switching button, a gas release adjustment button, and a gas release confirmation button.

10. A method for underwater gas release based on wireless control of the water surface, characterized in that... The method using the system according to claims 1-9 specifically includes the following steps: 1) Send gas release control commands via a surface wireless control platform; 2) The buoy unit receives the command and drives the motor of the underwater gas release control unit through the surface and underwater connection unit to adjust the opening of the fine-tuning valve and control the gas release; 3) The underwater monitoring unit captures real-time images of gas release and system status, and transmits the video data back to the buoy unit via the surface-to-underwater connection unit; 4) The underwater environment sensing unit detects underwater pressure / depth, water temperature and pH value in real time, and transmits the pressure / depth, temperature and pH value data back to the buoy unit through the surface-underwater connection unit; 5) The buoy unit wirelessly transmits video data, pressure / depth data, temperature data, pH data, and its own positioning information to the surface wireless control platform; 6) The surface wireless control platform displays underwater video, pressure / depth, temperature, pH value and latitude and longitude information in real time, allowing operators to monitor and adjust gas release parameters as needed.

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