Fire extinguishing method and system based on outboard motor

Abstract

The invention discloses a fire extinguishing method and system based on an outboard motor, and relates to the technical field of ship fire fighting, and the fire extinguishing method comprises the following steps: obtaining main power source data, standby power source data and water source supply data of the outboard motor, constructing a multi-power cooperative pre-debugging task, calculating a power matching loss value, operating parameters of the main power source, the standby power source and the water source supply system are adjusted through closed-loop adjustment until the power matching loss value converges; and inputting the fire source data of the fire extinguishing scene into the pre-debugged multi-power-water source cooperative system for processing, and outputting adaptive high-pressure water flow fire extinguishing parameters. According to the outboard engine fire extinguishing system, an engine exclusive power enhancement unit and a standby electric motor exclusive power enhancement unit are introduced into the outboard engine fire extinguishing system, an exclusive power enhancement channel of double power sources is constructed, and engine power and standby motor power can complete deep power matching in respective adaptive fire extinguishing scenes.

Description

Technical Field

[0001] This invention relates to the technical field of ship firefighting, and in particular to a fire extinguishing method and system based on an outboard motor. Background Technology

[0002] Outboard motors are commonly used portable propulsion power units for ships, characterized by their small size, high power density, and flexible deployment. They are typically used solely for propulsion. In the field of marine firefighting, portable fire extinguishing devices for small vessels (such as speedboats and fishing boats) have two typical configurations: one is a stand-alone fire pump, which requires its own fuel / electric power and suffers from drawbacks such as bulkiness and insufficient power; the other is a fire extinguishing device that reuses the outboard motor's engine power as the sole power source for the fire pump.

[0003] Existing fire extinguishing devices based on outboard motors usually follow the process of "single power drive → water source pressurization → jet fire extinguishing", but in actual application there are the following core problems: (1) Power dependence is singular: relying solely on the outboard motor engine as the only power source, if the engine fails due to corrosion, insufficient fuel or other faults, the fire extinguishing system will be directly paralyzed; (2) Poor power-water source adaptability: the power of the outboard motor engine is fixed, and it is impossible to dynamically match the pressure and flow of fire water according to the scale of the fire source (such as small fire / large fire scenario), which easily leads to "excessive pressure wasting power" or "insufficient pressure for fire extinguishing ineffective"; (3) No power redundancy design: lacking a backup power supplementation mechanism, the reliability of emergency fire extinguishing is difficult to guarantee.

[0004] The core of the above problem is that the existing solution "directly reuses" the power of the outboard motor as the power for firefighting, without designing a power enhancement and redundancy mechanism for firefighting scenarios. In essence, it is an over-reliance on a single power source, similar to the "single power deviation" problem in the field of ship firefighting. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fire extinguishing method based on an outboard motor, comprising: Acquire the main power source data, backup power source data, and water supply data of the outboard motor; extract the main power output characteristic parameters based on the main power source data; extract the backup power output characteristic parameters based on the backup power source data; and extract the water supply adaptation characteristic parameters based on the water supply data. The active power output characteristic parameters are subjected to engine-specific power enhancement processing to obtain active power enhancement characteristic parameters, and the backup power output characteristic parameters are subjected to electric motor-specific power enhancement processing to obtain backup power enhancement characteristic parameters. The active power enhancement characteristic parameters and backup power enhancement characteristic parameters are mapped to the fire extinguishing power demand space and synergistically fused with the water source adaptation characteristic parameters to obtain multi-power-water source fusion parameters. Construct a multi-power coordinated pre-commissioning task, using the multi-power-water source fusion parameters as the input of the multi-power coordinated pre-commissioning task, calculate the power matching loss value, and adjust the operating parameters of the main power source, backup power source and water supply system through closed-loop regulation until the power matching loss value converges; The fire source data of the fire extinguishing scenario is input into the pre-tuned multi-power-water source coordinated system for processing, and the system outputs the appropriate high-pressure water flow fire extinguishing parameters to drive the spray pump and nozzles to perform fire extinguishing operations according to the fire extinguishing parameters.

[0008] As a preferred embodiment of the fire extinguishing method based on an outboard motor according to the present invention, wherein: the step of performing engine-specific power enhancement processing on the active power output characteristic parameters to obtain active power enhancement characteristic parameters, and performing electric motor-specific power enhancement processing on the backup power output characteristic parameters to obtain backup power enhancement characteristic parameters, includes: The active power output characteristic parameters are input to the engine power enhancement processing unit to obtain the active power enhancement characteristic parameters; wherein, the engine power enhancement processing unit includes a multi-level power adjustment submodule and a load compensation submodule connected in series. The multi-level power adjustment submodule is used to dynamically optimize the fuel injection quantity and transmission ratio according to the fire extinguishing scenario, and the load compensation submodule is used to offset the influence of the injection pump load fluctuation on the power output. The backup power output characteristic parameters are input to the electric motor power enhancement processing unit to obtain the backup power enhancement characteristic parameters; wherein, the electric motor power enhancement processing unit includes a voltage stabilization submodule and a start-up acceleration submodule connected in series. The voltage stabilization submodule is used to maintain a constant output voltage, and the start-up acceleration submodule is used to shorten the motor start-up delay and improve the instantaneous power output.

[0009] As a preferred embodiment of the fire extinguishing method based on outboard motors described in this invention, the multi-stage power regulation submodule and load compensation submodule are calibrated and optimized through the following steps: The power demand parameters for different fire extinguishing scenarios are input into the uncalibrated multi-stage power adjustment submodule, and the fuel injection quantity threshold and transmission ratio parameters of the multi-stage power adjustment submodule are optimized by the power output deviation function. Data on different load conditions of the injection pump are input into an uncalibrated load compensation submodule, and the torque compensation coefficient of the load compensation submodule is optimized by the load-power matching deviation function. The voltage stabilization submodule and the startup acceleration submodule are calibrated and optimized through the following steps: different power supply voltage fluctuation data are input to the uncalibrated voltage stabilization submodule, and the voltage regulation feedback parameters of the voltage stabilization submodule are optimized through the voltage stabilization deviation function; The target value of the electric motor start-up delay and the start-up data under different ambient temperatures are input into the uncalibrated start-up acceleration submodule. The capacitor charging and discharging parameters of the start-up acceleration submodule are optimized by the start-up delay deviation function.

[0010] As a preferred embodiment of the fire extinguishing method based on outboard motors according to the present invention, wherein: mapping the active power enhancement characteristic parameters and the backup power enhancement characteristic parameters to the fire extinguishing power demand space includes: Obtain the power demand baseline parameters for the fire extinguishing scenario, and perform standardization processing based on the power demand baseline parameters to obtain the power demand baseline vector; adapt and align the active power enhancement feature parameters and the backup power enhancement feature parameters with the power demand baseline vector to obtain the active power alignment parameters and the backup power alignment parameters; map the active power alignment parameters and the backup power alignment parameters to the fire extinguishing power demand space through linear transformation.

[0011] As a preferred embodiment of the fire extinguishing method based on outboard motors according to the present invention, wherein: after mapping the active power alignment parameters and backup power alignment parameters to the fire extinguishing power demand space through linear transformation, they are synergistically fused with the water source adaptation characteristic parameters to obtain multi-power-water source fusion parameters, including: The water source adaptation feature parameters are weighted and summed with the active power alignment parameters and backup power alignment parameters mapped to the fire extinguishing power demand space to obtain the basic fusion value. The basic fusion value is added to the multi-power-water source fusion parameters output from the previous round of collaborative fusion to obtain the multi-power-water source fusion parameters for the current round.

[0012] As a preferred embodiment of the fire extinguishing method based on outboard motors described in this invention, the following steps are included: constructing a multi-power coordinated pre-tuning task, using the multi-power-water source fusion parameters as input to the multi-power coordinated pre-tuning task, calculating the power matching loss value, and adjusting the operating parameters of the main power source, backup power source, and water supply system through closed-loop regulation until the power matching loss value converges, comprising: A power-water source adaptability verification task is constructed, which is used to determine whether the combination of multiple power outputs and water supply meets the requirements of fire extinguishing scenarios. Based on the multi-power-water source fusion parameters, positive sample pairs and negative sample pairs are constructed. The compatibility degree between the multi-power-water source fusion parameters is calculated. Based on the compatibility degree, the power matching loss value of the power-water source compatibility verification task is calculated. With the goal of minimizing the power matching loss value, the fuel injection quantity of the active power source, the voltage output of the backup power source, and the water flow rate parameters of the water supply are adjusted in real time through closed-loop regulation.

[0013] As a preferred embodiment of the fire extinguishing method based on outboard motors according to the present invention, the multi-power-water source coordinated system includes: a parameter processing layer and a power-water source coordinated fusion layer, wherein the output end of the parameter processing layer is connected to the input end of the power-water source coordinated fusion layer; wherein... The parameter processing layer includes a multi-source parameter acquisition encoder, an engine power enhancement subunit, and an electric motor power enhancement subunit; the multi-source parameter acquisition encoder is used to extract the main power output characteristic parameters, the backup power output characteristic parameters, and the water source adaptation characteristic parameters. The engine power enhancement subunit is connected to the multi-source parameter acquisition encoder and includes a multi-level power adjustment submodule and a load compensation submodule connected in series, which are used to perform engine-specific power enhancement processing. The electric motor power enhancement subunit is connected to the multi-source parameter acquisition encoder and includes a voltage stabilization submodule and a start-up acceleration submodule connected in series, used to perform electric motor-specific power enhancement processing. The power-water source synergy fusion layer includes a power-water source adaptation and alignment module, a multi-parameter synergy fusion module, and a multi-power synergy pre-tuning module. The power-water source adaptation and alignment module is used to obtain the power demand baseline vector to achieve the adaptation and alignment of power parameters with fire extinguishing requirements and spatial mapping. The multi-parameter synergy fusion module is used to perform weighted summation and iterative fusion of power alignment parameters and water source adaptation feature parameters. The multi-power synergy pre-tuning module is used to construct an adaptability verification task, calculate the power matching loss value, and perform closed-loop adjustment.

[0014] A fire extinguishing system applied to the aforementioned fire extinguishing method based on an outboard motor includes: a fire source and operating condition acquisition module, a multi-power-water source coordinated control system, an outboard motor main propulsion unit, a backup electric motor unit, a water supply unit, and a high-pressure jetting unit. The output terminal of the fire source and operating condition acquisition module is connected to the input terminal of the multi-power-water source coordinated control system. The output terminals of the multi-power-water source coordinated control system are respectively connected to the input terminals of the outboard motor main propulsion unit, the backup electric motor unit, and the water supply unit. The output terminals of the outboard motor main propulsion unit and the water supply unit are connected to the input terminal of the high-pressure jetting unit. The fire source and operating condition acquisition module is used to collect fire source data and operating condition data in the fire extinguishing scenario; the multi-power-water source coordinated control system is equipped with the multi-power-water source coordinated system as described above, which is used to receive the data collected by the fire source and operating condition acquisition module, process it according to the corresponding method, and output control signals to coordinate the operation of the outboard motor main power unit, the backup electric motor unit and the water supply unit. The outboard motor main power unit is an outboard motor with its own engine, used to provide the main firefighting power; the backup electric motor unit is an independently deployed auxiliary power source, used to provide supplementary power when the main power fails or is insufficient, forming dual power redundancy; the water supply unit includes a hose coupling, a water tank and a spray pump, used to receive the drive from the power unit and convert the water source into a high-pressure water flow; the high-pressure spray unit includes an adjustable nozzle and pipeline, used to receive the high-pressure water flow from the water supply unit and execute precise firefighting operations according to control signals.

[0015] The present invention also discloses a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described fire extinguishing method based on an outboard motor.

[0016] The present invention also discloses a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the above-described fire extinguishing method based on an outboard motor.

[0017] The beneficial effects of this invention are as follows: By introducing a dedicated power enhancement unit for the engine and a dedicated power enhancement unit for the backup electric motor into the outboard motor fire extinguishing system, a dedicated power enhancement path for dual power sources is constructed, enabling the engine power and the backup motor power to achieve deep power matching in their respective fire extinguishing scenarios, rather than forcibly relying on a single engine power; at the same time, through the power-water source synergistic fusion system, the dual power parameters and water supply parameters are accurately matched. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall process of a fire extinguishing method based on an outboard motor proposed in this invention; Figure 2 This is a schematic diagram of the overall framework of a fire extinguishing system based on an outboard motor proposed in this invention. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0022] Reference Figure 1 As an embodiment of the present invention, a fire extinguishing method based on an outboard motor is provided, which includes the following steps: Step 1: Obtain the main power source data, backup power source data, and water supply data of the outboard motor. Extract the main power output characteristic parameters based on the main power source data, extract the backup power output characteristic parameters based on the backup power source data, and extract the water supply adaptation characteristic parameters based on the water supply data. Data is obtained from the outboard motor's ECU (Electronic Control Unit) for the primary power source (engine speed, output torque), from the backup electric motor's controller for the backup power source (output power, operating voltage), and from the water supply unit's pressure and flow sensors for water supply data (inlet pressure, real-time water flow rate). The primary power source data is input into the power parameter extraction module, where a low-pass filtering algorithm removes mechanical vibration interference data, and the primary power output characteristic parameters (including rated power value and real-time power fluctuation amplitude) are output. Similarly, the backup power source data is input into the same power parameter extraction module, which outputs backup power output characteristic parameters (including rated power value and instantaneous starting power peak value). Finally, the water supply data is input into the water parameter extraction module, where a threshold filtering algorithm retains effective pressure data in the 0.1MPa-0.5MPa range, and the water source adaptation characteristic parameters (including water pressure threshold and maximum continuous flow rate) are output.

[0023] Step 2: Perform engine-specific power enhancement processing on the active power output characteristic parameters to obtain active power enhancement characteristic parameters; perform electric motor-specific power enhancement processing on the backup power output characteristic parameters to obtain backup power enhancement characteristic parameters. The active power output characteristic parameters are input to the engine power enhancement processing unit to obtain the active power enhancement characteristic parameters. The engine power enhancement processing unit includes a multi-level power adjustment sub-module and a load compensation sub-module connected in series. The multi-level power adjustment sub-module is used to dynamically optimize the fuel injection quantity. The fuel injection quantity threshold of the multi-level power adjustment sub-module is set to 80%-120% of the rated value of the outboard motor engine to adapt to the power requirements of low fire (0.3MPa) and high fire (≥0.5MPa) scenarios.

[0024] The backup power output characteristic parameters are input to the electric motor power enhancement processing unit to obtain the backup power enhancement characteristic parameters. The electric motor power enhancement processing unit includes a voltage stabilization submodule and a start-up acceleration submodule connected in series. The start-up acceleration submodule is used to shorten the motor start-up delay. The capacitor charging and discharging time of the start-up acceleration submodule is set to ≤0.3s to ensure that the backup power can respond to emergency fire extinguishing needs within 1s in the event of engine failure.

[0025] Step 3: Map the active power enhancement characteristic parameters and backup power enhancement characteristic parameters to the fire extinguishing power demand space, and perform collaborative fusion with the water source adaptation characteristic parameters to obtain multi-power-water source fusion parameters; The active power enhancement characteristic parameters and backup power enhancement characteristic parameters are mapped to the fire extinguishing power demand space through a linear transformation module (the mapping coefficients are preset based on the ship fire extinguishing pressure range of 0.3MPa-0.8MPa), and then weighted and summed with the water source adaptation characteristic parameters (active power weight 0.5, backup power weight 0.2, water source parameter weight 0.3) to obtain the basic fusion value. This value is then superimposed with the previous fusion result to obtain the multi-power-water source fusion parameter. Step 4: Construct a multi-power coordinated pre-commissioning task, using the multi-power-water source fusion parameters as the input of the multi-power coordinated pre-commissioning task, calculate the power matching loss value, and adjust the operating parameters of the main power source, backup power source and water supply system through closed-loop regulation until the power matching loss value converges. Pre-debugging can be performed using a shipboard PLC (Programmable Logic Controller). This involves iteratively collecting real-time operating data until the power matching loss is ≤3% (meeting the ship's fire-fighting power-water compatibility standard). Specifically, a power-water compatibility verification task is constructed to determine whether the combination of power output and water supply meets fire-fighting requirements. Based on multiple power-water fusion parameters, positive and negative sample pairs are constructed. For example, parameter combinations where "power output meets fire-fighting pressure and water flow is compatible" are used as positive sample pairs, while parameter combinations where "power is insufficient / excessive or water flow is mismatched" are used as negative sample pairs. The Pearson correlation coefficient is used to calculate the compatibility degree of the parameter combinations. Based on this compatibility degree, the power matching loss value is calculated. With the goal of minimizing the loss value, the PLC closed-loop adjustment is used to regulate the fuel injection quantity of the main power source, the voltage output of the standby motor, and the opening of the water supply flow valve.

[0026] Step 5: Input the fire source data of the fire extinguishing scenario into the pre-tuned multi-power-water source collaborative system for processing, output the appropriate high-pressure water flow fire extinguishing parameters, and drive the spray pump and nozzle to perform fire extinguishing operations according to the fire extinguishing parameters.

[0027] After pre-commissioning, the multi-power-water source collaborative system is deployed on the control terminal of the outboard motor and connected to real-time fire source detection sensors (temperature and image sensors). Parameter inference is then performed to output the high-pressure water flow pressure, flow rate, and nozzle turning angle parameters for the corresponding scenario. In steps one through five above, considering that the single-power deviation is due to the existing outboard motor fire extinguishing device relying solely on a single engine power source without redundancy, resulting in system paralysis when the engine fails, and the fixed power cannot adapt to the power requirements of different fire sources, leading to low fire extinguishing efficiency, this embodiment introduces a dedicated engine power enhancement unit and a dedicated backup electric motor power enhancement unit in the power processing stage to construct a dual-power dedicated enhancement path. This allows the two power sources to achieve precise power matching in their respective suitable scenarios, rather than being forced to rely on a single engine power, breaking the single-power dependence and thus solving the single-power deviation problem, ultimately improving the fire extinguishing system's risk resistance and fire extinguishing efficiency.

[0028] In one embodiment, the multi-level power regulation submodule and the load compensation submodule are calibrated and optimized through the following steps: The power demand parameters for different fire extinguishing scenarios (including the power value corresponding to 0.3MPa injection pressure for small fire scenarios and the power value corresponding to ≥0.5MPa injection pressure for large fire scenarios) are input into the uncalibrated multi-level power adjustment submodule. The fuel injection quantity threshold and transmission ratio parameters of the multi-level power adjustment submodule are optimized through the power output deviation function. The data of different load conditions of the injection pump (including the pressure sensor feedback values ​​corresponding to no load, half load and full load) are input to the uncalibrated load compensation submodule, and the torque compensation coefficient of the load compensation submodule is optimized by the load-power matching deviation function. In this embodiment, the multi-level power adjustment submodule uses typical fire source power demand data in the field of small ship fire fighting for calibration training, accurately adapts the power output threshold of different combustion areas, thereby realizing the dynamic matching of the main power and the fire extinguishing scenario, and outputting stable main power enhancement characteristic parameters that meet the jet pressure requirements.

[0029] The voltage stabilization submodule and the start-up acceleration submodule are calibrated and optimized through the following steps: Input different power supply voltage fluctuation data (including 18V-24V normal fluctuation and ≤18V low voltage fluctuation) into the uncalibrated voltage stabilization submodule, and optimize the voltage stabilization feedback parameters of the voltage stabilization submodule through the voltage stabilization deviation function; Input the target value of electric motor start-up delay (≤0.5s) and start-up data under different ambient temperatures (including start-up data under normal operating conditions of -10℃-45℃) into the uncalibrated start-up acceleration submodule, and optimize the capacitor charging and discharging parameters of the start-up acceleration submodule through the start-up delay deviation function.

[0030] In this embodiment, the start-up acceleration submodule uses emergency start-up data of motors in marine high and low temperature environments for calibration training, which fully adapts to the rapid response requirements of complex ship operating conditions, thereby realizing second-level backup power and outputting backup power enhancement characteristic parameters that can be started in a short time when the engine fails.

[0031] Currently, in the process of power-water source coordination, there may still be an imbalance between the power output and the needs of the fire extinguishing scenario in fire extinguishing devices based on outboard motors. For example, differences in parameter expression and adaptation logic between the primary power source, backup power source, and water supply system may lead to insufficient matching of power demand, parameter heterogeneity, and inconsistent scenario adaptation in power-water synergy. Specifically: Insufficient power demand matching: Different firefighting scenarios (such as small fires and large fires) have different power output requirements, while the power output of outboard motors is usually fixed, resulting in a mismatch between power and demand.

[0032] For example, a small fire scenario only requires a jet pressure of 0.3 MPa, while the outboard motor has a fixed output of 0.5 MPa. This mismatch can lead to excess power wasting fuel or insufficient power to effectively extinguish the fire.

[0033] Parameter heterogeneity: The parameter structures and acquisition methods of the main power source, backup power source and water supply system are different.

[0034] For example, the main power source parameter is engine torque (a mechanical physical quantity), while the water source parameter is water flow pressure (a fluid physical quantity). This heterogeneity makes direct coordination between power and water source difficult.

[0035] Inconsistent scenario adaptation: There may be a mismatch between the power output parameters and the actual needs of the fire extinguishing scenario.

[0036] For example, when the fire extinguishing distance is far, a higher power output is needed to compensate for the pressure drop, but the outboard motor power was not adjusted accordingly, resulting in insufficient jet pressure at the far end, which could not cover the fire source.

[0037] To address this issue, in one embodiment, the active power enhancement characteristic parameters and backup power enhancement characteristic parameters are mapped to the fire extinguishing power demand space, including: Obtain the power demand baseline parameters for the fire extinguishing scenario (including the minimum power threshold corresponding to the fire source type, the power adaptation coefficient corresponding to the combustion area, and the power attenuation compensation value corresponding to the fire extinguishing distance), and perform standardization processing based on the power demand baseline parameters to obtain the power demand baseline vector. The active power enhancement characteristic parameters and the standby power enhancement characteristic parameters are adapted and aligned with the power demand benchmark vector (the parameter amplitude is adjusted according to the power threshold ratio and the parameter distribution is corrected according to the attenuation compensation value) to obtain the active power alignment parameters and the standby power alignment parameters. The active power alignment parameters and the standby power alignment parameters are then mapped to the fire extinguishing power demand space through linear transformation (the mapping coefficient is based on the preset standard of the marine fire protection industry and is adapted to the power output range corresponding to the jet pressure of 0.3MPa-0.8MPa).

[0038] In this embodiment, the Power-Scene AlignmentAlgorithm is invoked. Given real-time detection information of the fire extinguishing scenario (e.g., Class A fire + burning area 5㎡ + extinguishing distance 3m), a corresponding power demand baseline vector V is generated. The active power enhancement feature parameter P1 is adapted and aligned with V to obtain the active power alignment parameter P1(t). The backup power enhancement feature parameter P2 is adapted and aligned with V to obtain the backup power alignment parameter P2(t). The adaptation and alignment formula is as follows: Wherein, P1(t) = Align(main power enhancement characteristic parameter P1, power demand baseline vector V); P2(t) = Align(reserve power enhancement characteristic parameter P2, power demand baseline vector V).

[0039] There are several ways to obtain the baseline parameters for power demand, as shown in the following examples: (1) Acquisition based on fire source type: Identify the fire source type (Class A fire in fabric compartments (e.g., fire in canvas or bedding), Class A fire in cargo stacking (e.g., fire in cardboard boxes or sacks)) through the fire source type sensor and match the corresponding minimum power threshold; For example, a Class A fire in a fabric compartment (such as a fire involving canvas or bedding) is matched with a power value corresponding to a jet pressure of 0.35 MPa, while a Class A fire in a cargo stack (such as a fire involving stacks of cardboard boxes or sacks) is matched with a power value corresponding to a jet pressure of 0.4 MPa, ensuring that the power is compatible with the basic requirements of the fire source type.

[0040] (2) Based on the acquisition of the combustion range: The combustion area and extinguishing distance are detected by the image sensor, and the corresponding power adaptation coefficient and attenuation compensation value are calculated.

[0041] For example, for every 1㎡ increase in the burning area, the power adaptation coefficient increases by 0.15; for every 1m increase in the extinguishing distance, the power attenuation compensation value increases by 0.02MPa, ensuring that the power is adapted to the scale of the scene.

[0042] By obtaining accurate baseline parameters of power demand, we can ensure the matching of power and water source needs, scenario adaptability, and parameter synergy. This is explained in detail below: Demand matching: Ensure that the power output parameters match the minimum power threshold of the fire extinguishing scenario, so as to better coordinate the power and water sources; by matching the power threshold corresponding to the fire source type, the problems of excessive power waste or insufficient power failure can be reduced.

[0043] Scene adaptability: Ensure that the power output parameters are adapted to scene factors such as combustion area and extinguishing distance, thereby improving power utilization efficiency. By calculating the power adaptability coefficient and attenuation compensation value, the pressure sufficiency of the far-end injection can be improved to ensure full coverage of the fire source.

[0044] Parameter compatibility: Ensure compatibility between the heterogeneity of power parameters and water source parameters, thereby improving the system's collaborative stability. Through adaptation and alignment operations, mechanical quantities and fluid quantities can be transformed into parameters with a unified demand space, avoiding collaborative disorder caused by heterogeneity.

[0045] Considering that the imbalance between power and water supply stems from the following various deviations: ① Demand Dimension: The minimum power thresholds for different types of fire sources vary (0.3MPa for Class A fires and 0.4MPa for Class B fires). ② Spatial dimension: The impact of fire extinguishing distance on power output attenuation (power output attenuation of 0.02 MPa per meter); ③ Parameter dimension: Heterogeneity between dynamic parameters and water source parameters (mechanical physical quantities vs. fluid physical quantities). In this embodiment, during the alignment and fusion of power and water source parameters, a scenario demand factor is introduced. That is, the real-time parameters of the fire extinguishing scenario are used as a benchmark and as a demand information feature. By introducing this feature, the power parameters and scenario demands are kept synchronized in the same dimension. During the pre-debugging process, the system can learn the power-water source adaptation rules under specific scenarios, thereby keeping the power and demand adapted and synchronized, and solving the problem of power-water source adaptation imbalance.

[0046] Traditional power-water parameter fusion only maps parameters through simple linear transformations. While it can achieve basic coordination, its expressive power is limited and it cannot capture the nonlinear adaptation relationships under complex firefighting conditions (such as the dynamic power-water requirements corresponding to different combustion areas and firefighting distances). To address this issue, in one embodiment... After mapping the active power alignment parameters and backup power alignment parameters to the fire extinguishing power demand space through linear transformation, they are synergistically fused with water source adaptation characteristic parameters to obtain multi-power-water source fusion parameters, including: The basic fusion value is obtained by weighted summing of the water source adaptation characteristic parameters and the active power alignment parameters and backup power alignment parameters mapped to the fire extinguishing power demand space. The weighting coefficients are based on the preset values ​​of the ship fire fighting industry standard (the weight of the main power alignment parameter is 0.4-0.6, the weight of the backup power alignment parameter is 0.2-0.3, and the weight of the water source adaptation characteristic parameter is 0.2-0.3, and the sum of the three weights is 1), which adapts the power-water source priority to different fire source scenarios. The basic fusion value is added to the multi-power-water source fusion parameters output from the previous round of collaborative fusion to obtain the multi-power-water source fusion parameters for the current round. The initial value of the fusion parameters from the previous round is set to 0. During the iteration process, only the effective fusion results from the last 3 rounds are retained to avoid interference from redundant historical information.

[0047] In this embodiment, a residual compensation structure is introduced during the parameter fusion process. When processing power parameters and water source parameters, after completing the spatial mapping through linear transformation, the output characteristics of power parameters and the supply characteristics of water source parameters are retained through residual compensation. This allows the system to learn the synergistic commonalities between power and water source, while also retaining the unique adaptation characteristics of each parameter.

[0048] The process of multi-power-water source integration is as follows: The active power alignment parameter P1(t), the backup power alignment parameter P2(t), and the water source adaptation characteristic parameter W are mapped to the fire extinguishing power demand space through a linear transformation module. Assuming the linear transformation function is K, the mapped parameters are K1(P1(t)), K2(P2(t)), and K3(W). A residual compensation term is introduced between the mapped parameters, directly adding the original characteristic values ​​of each parameter to the output parameters while retaining the specific information of the working condition adaptation. The specific formula is as follows: Ffusion = K1(P1(t)) + K2(P2(t)) + K3(W) + Res(P1(t), P2(t), W) (The Res term is the working condition residual compensation value for each parameter).

[0049] The multi-power-water source fusion parameter F is used as the control input of the shipboard PLC for multi-power collaborative pre-commissioning tasks. This allows the system to adapt to the common power-water source requirements of different fire extinguishing scenarios while retaining the unique characteristics of the main and backup power and water sources. This further solves the problem of power-water source mismatch and improves the accuracy of fire extinguishing parameters.

[0050] Reference Figure 2 , Figure 2 This is a flowchart illustrating the fire extinguishing method operating on the ship's outboard motor fire suppression system, as shown below. Figure 2 As shown, the process includes a multi-power-water source coordinated pre-commissioning phase and a fire extinguishing execution phase.

[0051] During the pre-commissioning phase of multi-power-water source coordination: Step S101: The main power source data (engine speed, output torque), backup power source data (motor power, operating voltage) and water supply data (inlet pressure, real-time flow) are acquired through the outboard motor ECU (electronic control unit), backup electric motor controller and water pressure / flow sensor. These data are then input into the parameter extraction module to extract the main power output characteristic parameters, backup power output characteristic parameters and water source adaptation characteristic parameters, respectively.

[0052] Step S102: Perform dedicated power enhancement processing on the active power output characteristic parameters and the backup power output characteristic parameters respectively to obtain active power enhancement characteristic parameters and backup power enhancement characteristic parameters. Specifically, the active power output characteristic parameters are input to the engine power enhancement processing unit to obtain active power enhancement characteristic parameters; wherein, this unit includes a multi-level power adjustment submodule and a load compensation submodule connected in series. The multi-level power adjustment submodule is used to dynamically optimize the fuel injection quantity and transmission ratio according to the fire extinguishing scenario (small fire / large fire), and the load compensation submodule is used to offset the impact of the no-load / full-load fluctuation of the injection pump on the power output. The backup power output characteristic parameters are input to the electric motor power enhancement processing unit to obtain backup power enhancement characteristic parameters; wherein, this unit includes a voltage stabilization submodule and a start-up acceleration submodule connected in series. The voltage stabilization submodule is used to maintain a constant output voltage in the 18V-24V range, and the start-up acceleration submodule is used to shorten the motor start-up delay to ≤0.5s and improve the instantaneous power peak.

[0053] Step S103: Map the active power enhancement feature parameters and backup power enhancement feature parameters to the fire extinguishing power demand space, and perform collaborative fusion with the water source adaptation feature parameters to obtain multi-power-water source fusion parameters. Specifically, obtain the power demand benchmark parameters of the fire extinguishing scenario (minimum power threshold corresponding to the fire source type, adaptation coefficient corresponding to the combustion area), and perform standardization processing based on these parameters to obtain the power demand benchmark vector; adapt and align the active power and backup power enhancement feature parameters with this benchmark vector respectively (adjust the parameter amplitude according to the threshold ratio), then map them to the fire extinguishing power demand space through linear transformation, and perform weighted summation (active power weight 0.5, backup power weight 0.2, water source parameter weight 0.3) and iterative fusion with the water source adaptation feature parameters.

[0054] Step S104: Construct a multi-power coordinated pre-commissioning task, using the multi-power-water source fusion parameters as input to calculate the power matching loss value, and adjust the operating parameters of each system through closed-loop regulation until the loss value converges. Specifically, construct a power-water source compatibility verification task to determine whether the combination of power output and water supply meets the requirements of the fire extinguishing scenario; based on the multi-power-water source fusion parameters, construct positive sample pairs of "power output meets the standard and water flow is compatible" and negative sample pairs of "insufficient / excessive power or mismatched water flow"; use the Pearson correlation coefficient to calculate the compatibility degree between parameters, calculate the power matching loss value based on the compatibility degree, and with the goal of minimizing the loss value, adjust the fuel injection quantity of the main power, the voltage output of the backup motor, and the water flow parameters of the water source in real time through closed-loop regulation of the shipborne PLC until the loss value is ≤3% (meeting the ship fire-fighting power-water source compatibility standard).

[0055] During the fire extinguishing execution phase: The fire source data of the fire extinguishing scenario (fire source type, burning area, fire extinguishing distance) is input into the pre-tuned multi-power-water source coordinated system for processing, and the appropriate high-pressure water flow fire extinguishing parameters (jet pressure, flow rate, nozzle turning angle) are output to drive the spray pump and adjustable nozzle to perform fire extinguishing operations according to the parameters.

[0056] This implementation constructs a dedicated power enhancement pathway for dual power systems, enabling the engine and backup electric motor to achieve deep power matching in their respective suitable firefighting scenarios, rather than forcibly relying on a single engine, fundamentally breaking the limitations of single-power dependence. Furthermore, it introduces scenario demand factors and effectively solves the problem of mismatch in power-water source coordination through a power-water source adaptation and alignment mechanism. Ultimately, this improves the firefighting system's resilience and firefighting efficiency, making it more reliable and accurate in emergency firefighting scenarios involving small vessels such as speedboats and fishing boats.

[0057] The embodiment also discloses a fire extinguishing system based on an outboard motor. The fire extinguishing system includes: a fire source and operating condition acquisition module, a multi-power-water source coordinated control system, an outboard motor main propulsion unit, a backup electric motor unit, a water supply unit, and a high-pressure jetting unit. The output terminal of the fire source and operating condition acquisition module is connected to the input terminal of the multi-power-water source coordinated control system. The output terminals of the multi-power-water source coordinated control system are respectively connected to the input terminals of the outboard motor main propulsion unit, the backup electric motor unit, and the water supply unit. The output terminals of the outboard motor main propulsion unit and the water supply unit are connected to the input terminal of the high-pressure jetting unit. The fire source and operating condition acquisition module is used to collect fire source data (including fire source type, burning area, and fire source distance) and operating condition data (including outboard motor power parameters, backup electric motor parameters, and water supply parameters) for the fire extinguishing scenario; the multi-power-water source coordination system is used to receive the data collected by the fire source and operating condition acquisition module, process it according to the corresponding method, and output control signals to coordinate the operation of the outboard motor power unit, backup electric motor unit, and water supply unit. The outboard motor main power unit is an outboard motor with its own engine, used to provide the main firefighting power; the backup electric motor unit is an independently deployed auxiliary power source, used to provide supplementary power when the main power fails or is insufficient, forming dual power redundancy; the water supply unit includes hose couplings, a water tank and a spray pump, used to receive the drive from the power unit and convert the water source into a high-pressure water flow; the high-pressure spray unit includes adjustable nozzles and pipelines, used to receive the high-pressure water flow from the water supply unit and execute precise firefighting operations according to control signals.

[0058] The outboard motor's control terminal is equipped with a multi-power-water source coordinated control system. By inputting fire source data from the fire extinguishing scenario into this module for processing, it outputs adapted high-pressure water flow fire extinguishing parameters.

[0059] It should be noted that the multi-power-water source coordinated system includes: a parameter processing layer and a power-water source coordinated fusion layer, with the output of the parameter processing layer connected to the input of the power-water source coordinated fusion layer; wherein, The parameter processing layer includes a multi-source parameter acquisition encoder, an engine power enhancement subunit, and an electric motor power enhancement subunit; the multi-source parameter acquisition encoder is used to extract the main power output characteristic parameters, the backup power output characteristic parameters, and the water source adaptation characteristic parameters; The engine power enhancement subunit is connected to the multi-source parameter acquisition encoder, including a multi-level power adjustment submodule and a load compensation submodule connected in series, for performing engine-specific power enhancement processing; The electric motor power enhancement subunit is connected to the multi-source parameter acquisition encoder, including a voltage stabilization submodule and a start-up acceleration submodule connected in series, which are used to perform electric motor-specific power enhancement processing. The power-water source synergy fusion layer includes a power-water source adaptation and alignment module, a multi-parameter synergy fusion module, and a multi-power synergy pre-tuning module. The power-water source adaptation and alignment module is used to obtain the power demand baseline vector and realize the adaptation and alignment of power parameters with fire extinguishing requirements and spatial mapping. The multi-parameter synergy fusion module is used to perform weighted summation and iterative fusion of power alignment parameters and water source adaptation feature parameters. The multi-power synergy pre-tuning module is used to construct the adaptability verification task, calculate the power matching loss value, and perform closed-loop adjustment.

[0060] Specifically, the parameter processing layer is used to perform dedicated power enhancement processing on the active power and backup power source data, extracting the characteristic parameters of active power and backup power enhancement. The parameter processing layer includes an engine power enhancement processing unit and an electric motor power enhancement processing unit. The engine power enhancement processing unit extracts the active power output characteristic parameters from the active power source data and performs engine-specific power enhancement processing to obtain the active power enhancement characteristic parameters (P1); the electric motor power enhancement processing unit extracts the backup power output characteristic parameters from the backup power source data and performs electric motor-specific power enhancement processing to obtain the backup power enhancement characteristic parameters (P2). The engine power enhancement processing unit includes an interconnected active power parameter acquisition submodule and an engine-specific enhancement submodule.

[0061] The engine-specific enhancement submodule includes a multi-level power adjustment submodule and a load compensation submodule connected in series. The multi-level power adjustment submodule has a built-in scenario-power mapping table to optimize fuel injection quantity and transmission ratio according to low-fire (0.3MPa) and high-fire (≥0.5MPa) scenarios. The load compensation submodule has a built-in load-torque curve to offset the impact of injection pump load fluctuations on power.

[0062] The active power parameter acquisition submodule extracts active power output characteristic parameters (speed, torque) from the outboard motor ECU, and the engine-specific enhancement submodule performs dedicated enhancement processing on them to obtain active power enhancement characteristic parameters. The electric motor power enhancement processing unit includes an interconnected backup power parameter acquisition submodule and an electric motor-specific enhancement submodule.

[0063] The dedicated enhancement submodule for electric motors includes a voltage stabilization submodule and a start-up acceleration submodule connected in series. The voltage stabilization submodule maintains a constant output voltage of 18V-24V through a feedback circuit; the start-up acceleration submodule shortens the motor start-up delay to ≤0.5s and increases instantaneous power through capacitor charging and discharging control. The backup power parameter acquisition submodule extracts backup power output characteristic parameters (power, voltage) from the motor controller, and the dedicated enhancement submodule for electric motors performs specific enhancement processing on these parameters to obtain the backup power enhancement characteristic parameters.

[0064] This embodiment also provides a computer device applicable to a fire extinguishing method based on an outboard motor, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement a fire extinguishing method based on an outboard motor as proposed in the above embodiment.

[0065] The computer device can be a terminal, comprising a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0066] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements a fire extinguishing method based on an outboard motor as proposed in the above embodiments. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fire extinguishing method based on an outboard motor, characterized in that, include: Acquire the main power source data, backup power source data, and water supply data of the outboard motor; extract the main power output characteristic parameters based on the main power source data; extract the backup power output characteristic parameters based on the backup power source data; and extract the water supply adaptation characteristic parameters based on the water supply data. The active power output characteristic parameters are subjected to engine-specific power enhancement processing to obtain active power enhancement characteristic parameters, and the backup power output characteristic parameters are subjected to electric motor-specific power enhancement processing to obtain backup power enhancement characteristic parameters. The active power enhancement characteristic parameters and backup power enhancement characteristic parameters are mapped to the fire extinguishing power demand space and synergistically fused with the water source adaptation characteristic parameters to obtain multi-power-water source fusion parameters. Construct a multi-power coordinated pre-commissioning task, using the multi-power-water source fusion parameters as the input of the multi-power coordinated pre-commissioning task, calculate the power matching loss value, and adjust the operating parameters of the main power source, backup power source and water supply system through closed-loop regulation until the power matching loss value converges; The fire source data of the fire extinguishing scenario is input into the pre-tuned multi-power-water source coordinated system for processing, and the system outputs the appropriate high-pressure water flow fire extinguishing parameters to drive the spray pump and nozzles to perform fire extinguishing operations according to the fire extinguishing parameters.

2. The fire extinguishing method based on an outboard motor according to claim 1, characterized in that: The process of performing engine-specific power enhancement processing on the active power output characteristic parameters to obtain active power enhancement characteristic parameters, and performing electric motor-specific power enhancement processing on the backup power output characteristic parameters to obtain backup power enhancement characteristic parameters, includes: The active power output characteristic parameters are input to the engine power enhancement processing unit to obtain the active power enhancement characteristic parameters; wherein, the engine power enhancement processing unit includes a multi-level power adjustment submodule and a load compensation submodule connected in series. The multi-level power adjustment submodule is used to dynamically optimize the fuel injection quantity and transmission ratio according to the fire extinguishing scenario, and the load compensation submodule is used to offset the influence of the injection pump load fluctuation on the power output. The backup power output characteristic parameters are input to the electric motor power enhancement processing unit to obtain the backup power enhancement characteristic parameters; wherein, the electric motor power enhancement processing unit includes a voltage stabilization submodule and a start-up acceleration submodule connected in series. The voltage stabilization submodule is used to maintain a constant output voltage, and the start-up acceleration submodule is used to shorten the motor start-up delay and improve the instantaneous power output.

3. A fire extinguishing method based on an outboard motor according to claim 2, characterized in that: The multi-level power regulation submodule and load compensation submodule are calibrated and optimized through the following steps: The power demand parameters for different fire extinguishing scenarios are input into the uncalibrated multi-stage power adjustment submodule, and the fuel injection quantity threshold and transmission ratio parameters of the multi-stage power adjustment submodule are optimized by the power output deviation function. Data on different load conditions of the injection pump are input into an uncalibrated load compensation submodule, and the torque compensation coefficient of the load compensation submodule is optimized by the load-power matching deviation function. The voltage stabilization submodule and the startup acceleration submodule are calibrated and optimized through the following steps: different power supply voltage fluctuation data are input into the uncalibrated voltage stabilization submodule, and the voltage stabilization feedback parameters of the voltage stabilization submodule are optimized through the voltage stabilization deviation function; the target value of the electric motor startup delay and startup data under different ambient temperatures are input into the uncalibrated startup acceleration submodule, and the capacitor charging and discharging parameters of the startup acceleration submodule are optimized through the startup delay deviation function.

4. A fire extinguishing method based on an outboard motor according to claim 1, characterized in that: The process of mapping the active power enhancement characteristic parameters and the backup power enhancement characteristic parameters to the fire extinguishing power demand space includes: Obtain the power demand baseline parameters for the fire extinguishing scenario, and perform standardization processing based on the power demand baseline parameters to obtain the power demand baseline vector. The active power enhancement feature parameters and the backup power enhancement feature parameters are adapted and aligned with the power demand reference vector to obtain the active power alignment parameters and the backup power alignment parameters; the active power alignment parameters and the backup power alignment parameters are then mapped to the fire extinguishing power demand space through linear transformation.

5. A fire extinguishing method based on an outboard motor according to claim 4, characterized in that: After mapping the active power alignment parameters and backup power alignment parameters to the fire extinguishing power demand space through linear transformation, they are then synergistically fused with the water source adaptation characteristic parameters to obtain multi-power-water source fusion parameters, including: The water source adaptation feature parameters are weighted and summed with the active power alignment parameters and backup power alignment parameters mapped to the fire extinguishing power demand space to obtain the basic fusion value. The basic fusion value is added to the multi-power-water source fusion parameters output from the previous round of collaborative fusion to obtain the multi-power-water source fusion parameters for the current round.

6. A fire extinguishing method based on an outboard motor according to claim 1, characterized in that: The construction of the multi-power coordinated pre-tuning task, using the multi-power-water source fusion parameters as input, calculates the power matching loss value, and adjusts the operating parameters of the main power source, backup power source, and water supply system through closed-loop regulation until the power matching loss value converges, including: A power-water source adaptability verification task is constructed, which is used to determine whether the combination of multiple power outputs and water supply meets the requirements of fire extinguishing scenarios. Based on the multi-power-water source fusion parameters, positive sample pairs and negative sample pairs are constructed. The compatibility degree between the multi-power-water source fusion parameters is calculated. Based on the compatibility degree, the power matching loss value of the power-water source compatibility verification task is calculated. With the goal of minimizing the power matching loss value, the fuel injection quantity of the active power source, the voltage output of the backup power source, and the water flow rate parameters of the water supply are adjusted in real time through closed-loop regulation.

7. A fire extinguishing method based on an outboard motor according to claim 6, characterized in that: The multi-power-water source coordinated system includes: a parameter processing layer and a power-water source coordinated fusion layer, wherein the output end of the parameter processing layer is connected to the input end of the power-water source coordinated fusion layer; wherein... The parameter processing layer includes a multi-source parameter acquisition encoder, an engine power enhancement subunit, and an electric motor power enhancement subunit; the multi-source parameter acquisition encoder is used to extract the main power output characteristic parameters, the backup power output characteristic parameters, and the water source adaptation characteristic parameters. The engine power enhancement subunit is connected to the multi-source parameter acquisition encoder and includes a multi-level power adjustment submodule and a load compensation submodule connected in series, which are used to perform engine-specific power enhancement processing. The electric motor power enhancement subunit is connected to the multi-source parameter acquisition encoder and includes a voltage stabilization submodule and a start-up acceleration submodule connected in series, used to perform electric motor-specific power enhancement processing. The power-water source synergy fusion layer includes a power-water source adaptation and alignment module, a multi-parameter synergy fusion module, and a multi-power synergy pre-tuning module. The power-water source adaptation and alignment module is used to obtain the power demand baseline vector to achieve the adaptation and alignment of power parameters with fire extinguishing requirements and spatial mapping. The multi-parameter synergy fusion module is used to perform weighted summation and iterative fusion of power alignment parameters and water source adaptation feature parameters. The multi-power synergy pre-tuning module is used to construct an adaptability verification task, calculate the power matching loss value, and perform closed-loop adjustment.

8. A fire extinguishing system based on an outboard motor, characterized in that: include: The fire extinguishing system includes: a fire source and operating condition acquisition module, a multi-power-water source coordinated control system, an outboard motor main propulsion unit, a backup electric motor unit, a water supply unit, and a high-pressure spraying unit. The output of the fire source and operating condition acquisition module is connected to the input of the multi-power-water source coordinated control system. The output of the multi-power-water source coordinated control system is connected to the inputs of the outboard motor main propulsion unit, the backup electric motor unit, and the water supply unit, respectively. The outputs of the outboard motor main propulsion unit and the water supply unit are connected to the input of the high-pressure spraying unit. The fire source and operating condition acquisition module is used to collect fire source data and operating condition data in the fire extinguishing scenario; the multi-power-water source coordination system is deployed on the control terminal of the outboard motor, used to receive the data collected by the fire source and operating condition acquisition module, process it according to the corresponding method and output control signals to coordinate the operation of the outboard motor's main power unit, backup electric motor unit and water supply unit. The outboard motor main power unit is an outboard motor with its own engine, used to provide the main firefighting power; the backup electric motor unit is an independently deployed auxiliary power source, used to provide supplementary power when the main power fails or is insufficient, forming dual power redundancy; the water supply unit includes a hose coupling, a water tank and a spray pump, used to receive the drive from the power unit and convert the water source into a high-pressure water flow; the high-pressure spray unit includes an adjustable nozzle and pipeline, used to receive the high-pressure water flow from the water supply unit and execute precise firefighting operations according to control signals.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the fire extinguishing method based on an outboard motor as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the fire extinguishing method based on an outboard motor as described in any one of claims 1 to 7.

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