Automatic fire extinguishing device control method and system based on multi-dimensional sensing

Abstract

The invention relates to the technical field of fire fighting, in particular to an automatic fire extinguishing device control method and system based on multi-dimensional sensing, and the method comprises the steps: obtaining an environment temperature and an environment image through a plurality of sensors and an image collector in a fire detection unit, obtaining fire source parameters based on the environment image, obtaining an accurate fire extinguishing point according to the fire source parameters, calculating the accurate fire extinguishing nodes to obtain fire source three-dimensional nodes, determining a transmission path of a fire extinguishing medium based on the fire source three-dimensional nodes and a pre-constructed fire-fighting pipeline network, identifying a target execution unit based on the transmission path and the fire extinguishing execution unit, spraying the fire extinguishing medium by the target execution unit and obtaining spraying pressure in real time, and the opening degree of the pressure stabilizing valve is calculated based on the injection pressure and a pre-constructed pressure stabilizing valve opening degree calculation formula, and the opening degree of a valve in the fire extinguishing execution unit is adjusted according to the opening degree of the pressure stabilizing valve. According to the invention, the automatic fire extinguishing device can be accurately controlled.

Description

Technical Field

[0001] The present invention relates to the field of fire protection technology, and in particular to a control method and system for an automatic fire extinguishing device based on multi-dimensional sensing. Background Art

[0002] With the development of automatic control technology, automatic fire extinguishing systems have become widely used in public and industrial buildings, playing a vital role in ensuring personnel safety and reducing property losses. Existing automatic fire extinguishing systems typically rely on a single type of sensor for fire detection, such as temperature, smoke, and flame sensors, automatically activating the fire extinguishing actuator upon detection. However, these systems still have some limitations in practical application.

[0003] The drawbacks of existing automatic fire extinguishing devices are mainly reflected in two aspects. First, most systems rely on only a single type of sensor for fire detection, resulting in insufficient detection accuracy in complex environments. Second, when controlling the fire extinguishing execution unit, the existing system fails to fully consider the specific parameters of the fire source, such as the diameter of the fire source and the heat release rate of the burning material, resulting in the injection path and dosage of the fire extinguishing medium being inaccurate, affecting the fire extinguishing efficiency. In addition, when adjusting the injection pressure and flow rate, the existing system lacks a dynamic adjustment mechanism for real-time feedback data, and is unable to timely optimize the fire extinguishing strategy according to the dynamic changes at the fire scene. Therefore, how to achieve accurate control of the automatic fire extinguishing device and improve the fire extinguishing efficiency has become a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The present invention provides a control method for an automatic fire extinguishing device based on multi-dimensional sensing and a computer-readable storage medium, the main purpose of which is to achieve accurate control of the automatic fire extinguishing device.

[0005] To achieve the above objectives, the present invention provides a method for controlling an automatic fire extinguishing device based on multi-dimensional sensing, comprising:

[0006] receiving an automatic control instruction, and determining an automatic control environment based on the automatic control instruction, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector;

[0007] After confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and fire source parameters are obtained based on the ambient image received by the data analysis unit and a pre-built image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of the burning material, and the heat release rate of the burning material;

[0008] Calculating a target flame height and a target virtual point source height based on fire source parameters, a pre-established flame height calculation formula, and a pre-established virtual point source height calculation formula, respectively;

[0009] The target flame horizontal extension is calculated using the target virtual point source height, ambient temperature and the pre-built flame horizontal extension relationship. The target flame height, target virtual point source height and target flame horizontal extension are summarized to obtain the accurate fire extinguishing node.

[0010] Calculate the accurate fire extinguishing nodes to obtain the three-dimensional nodes of the fire source;

[0011] Determining a transmission path of a fire extinguishing medium in a pre-built fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-built fire fighting pipe network, and generating a control instruction in a data analysis unit based on the transmission path;

[0012] After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the fire extinguishing medium stored in the fire extinguishing medium storage device is sprayed according to the transmission path by the target execution unit, and the spraying pressure is obtained in real time;

[0013] The pressure-stabilizing valve opening is calculated based on the injection pressure and the pre-established pressure-stabilizing valve opening calculation formula. The opening of the valve in the fire extinguishing execution unit is adjusted according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

[0014] Optionally, the confirmation is based on the fire detection unit acquiring the ambient temperature and the ambient image, including:

[0015] Use the temperature sensor and smoke sensor to obtain the collected ambient temperature and collected smoke concentration in real time, confirm that the collected ambient temperature is greater than the preset temperature threshold and the collected smoke concentration is greater than the preset smoke concentration threshold, and confirm that the preset flame information is detected by the flame sensor, then use the collected ambient temperature as the ambient temperature and use the image collector to collect the environmental image.

[0016] Optionally, the obtaining of fire source parameters based on the environmental image received by the data analysis unit and a pre-built image recognition algorithm includes:

[0017] Utilizing the image recognition algorithm, extracting a fire source area image from the environmental image received by the data analysis unit, identifying a circumscribed circle of the fire source area image, obtaining a circumscribed circle of the fire source range, obtaining a diameter of the circumscribed circle of the fire source range, and obtaining a range diameter;

[0018] The image resolution of the environmental image and the focal length of the camera of the image collector are obtained respectively, and the diameter of the fire source is obtained using the range diameter, the image resolution and the focal length of the camera;

[0019] Identify the environmental image to obtain the type of combustion material, and use the combustion material type to search in the pre-built combustion material feature database to obtain the heat release rate of the combustion material;

[0020] The fire source parameters are obtained by summarizing the fire source diameter, type of combustion material and heat release rate of the combustion material.

[0021] Optionally, the calculating the target flame height and the target virtual point source height based on the fire source parameters, the pre-constructed flame height calculation formula, and the pre-constructed virtual point source height calculation formula, respectively, includes:

[0022] The target flame height is calculated using the fire source parameters and the pre-built flame height calculation formula. The flame height calculation formula is as follows:

[0023] H=-1.02d+0.235Q 2 / 5

[0024] Where H represents the target flame height, d represents the diameter of the fire source, and Q represents the heat release rate of the combustion product;

[0025] The target virtual point source height is calculated using the fire source parameters and the pre-built virtual point source height calculation formula. The virtual point source height calculation formula is as follows:

[0026] Z0=-1.02d+0.083Q 2 / 5

[0027] Among them, Z0 represents the height of the target virtual point source.

[0028] Optionally, the flame horizontal extension relationship is as follows:

[0029]

[0030] Where L represents the horizontal extension of the target flame, and T0 represents the ambient temperature.

[0031] Optionally, calculating the accurate fire extinguishing node to obtain the three-dimensional fire source node includes:

[0032] Construct a three-dimensional coordinate system, wherein the three-dimensional coordinate system includes horizontal, vertical, and vertical directions, project the horizontal extension of the target flame at the accurate fire extinguishing node into the horizontal and vertical directions respectively, obtain the projected horizontal value and the projected vertical value, calculate the sum of the target flame height and the target virtual point source height at the accurate fire extinguishing node, and obtain the flame spread height;

[0033] The three-dimensional node of the fire source is obtained based on the projected horizontal value, the projected vertical value, and the flame spread height. The three-dimensional node of the fire source is as follows:

[0034] J=(x,y,z)

[0035] Among them, J represents the three-dimensional node of the fire source, x, y, and z are the projected horizontal value, projected vertical value, and flame spread height, respectively.

[0036] Optionally, determining a transmission path of the fire extinguishing medium in the pre-built fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-built fire fighting pipe network includes:

[0037] Using the three-dimensional fire source node and the fire extinguishing medium storage device, multiple initial transmission paths are retrieved in the fire protection pipeline network, and the following operations are performed on each of the multiple initial transmission paths:

[0038] Obtain the pipeline length of the initial transmission path and calculate the pressure loss along the pipeline based on the pipeline length. The calculation formula is as follows:

[0039]

[0040] Wherein, ΔP represents the pressure loss along the pipeline, γ represents the friction resistance coefficient of the pipeline, q represents the operating flow rate of the fire extinguishing medium in the pipeline, D represents the inner diameter of the pipeline, T2 represents the thermodynamic temperature of the inlet fire extinguishing medium, T1 represents the thermodynamic temperature of the standard condition, ρ represents the operating density of the fire extinguishing medium in the pipeline, and S represents the length of the pipeline;

[0041] Obtain the number of pipe accessories in the initial transmission path and calculate the overall pressure loss of the pipe accessories based on the number of pipe accessories. The calculation formula is as follows:

[0042]

[0043] Where ΔP g represents the overall pressure loss of pipeline accessories, n represents the number of pipeline accessories, ρ f Indicates the standard density of the fire extinguishing medium in the pipeline, P 2a,i represents the absolute pressure at the inlet of the i-th pipeline accessory, q f Indicates the standard flow rate of the entire pipeline accessories, T 2f represents the thermodynamic temperature of the fire extinguishing medium at the inlet of the first pipe accessory, ρ a Indicates the standard density of the air in the pipeline, P 2f Indicates the absolute pressure of the inlet extinguishing medium, T 2a,i represents the thermodynamic temperature of the air inlet of the i-th pipe accessory, q a,i Indicates the standard flow rate of the i-th pipeline accessory, ΔP a,i It represents the pressure difference before and after the i-th pipe accessory is tested with air;

[0044] The total pressure loss of the initial transmission path is calculated based on the pressure loss along the path and the overall pressure loss of the pipeline accessories. The calculation formula is as follows:

[0045]

[0046] Where ΔP t represents the total pressure loss in the initial transmission path, ω are all preset coefficients;

[0047] The total pressure losses are summarized to obtain a total pressure loss set, and the transmission path of the fire extinguishing medium is confirmed using the total pressure loss set, wherein the initial transmission path corresponding to the minimum total pressure loss in the total pressure loss set is the transmission path of the fire extinguishing medium.

[0048] Optionally, before using the target execution unit to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, the method includes:

[0049] The azimuth of the target execution unit is calculated using the three-dimensional node of the fire source. The calculation formula is as follows:

[0050]

[0051] Where α represents the azimuth angle, and the initial position coordinates of the target execution unit are (x1, y1, z1);

[0052] The pitch angle of the target execution unit is calculated using the fire source 3D node. The calculation formula is as follows:

[0053]

[0054] Where β represents the pitch angle;

[0055] Adjust the target execution unit based on the azimuth and elevation angles.

[0056] Optionally, the calculating the pressure stabilizing valve opening based on the injection pressure and a pre-established pressure stabilizing valve opening calculation formula, and adjusting the opening of the valve in the fire extinguishing execution unit according to the pressure stabilizing valve opening, includes:

[0057] Calculate the pressure stabilizing valve opening using the injection pressure and the pre-established pressure stabilizing valve opening calculation formula;

[0058] The calculation formula for the opening of the pressure stabilizing valve is as follows:

[0059]

[0060] Among them, θ represents the opening of the pressure regulating valve, K p , K i , K d Represents proportional, integral, and differential control coefficients respectively, P set Indicates set pressure, P indicates injection pressure, and t indicates time;

[0061] Generate valve adjustment signal by using the opening of the pressure stabilizing valve;

[0062] The valve adjustment signal is used to adjust the opening of the valve in the fire extinguishing execution unit.

[0063] To achieve the above objectives, the present invention further provides an automatic fire extinguishing device control system based on multi-dimensional sensing, comprising:

[0064] a fire sensing module, configured to receive automatic control instructions and determine an automatic control environment based on the automatic control instructions, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector;

[0065] a parameter analysis module for confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, transmitting the ambient image to the data analysis unit, obtaining fire source parameters based on the ambient image received by the data analysis unit and a pre-constructed image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of combustible material, and the heat release rate of the combustible material; calculating the target flame height and the target virtual point source height based on the fire source parameters, a pre-constructed flame height calculation formula, and a pre-constructed virtual point source height calculation formula, respectively; calculating the target flame horizontal extension using the target virtual point source height, the ambient temperature, and a pre-constructed flame horizontal extension relationship; summarizing the target flame height, the target virtual point source height, and the target flame horizontal extension to obtain an accurate fire extinguishing node; calculating the accurate fire extinguishing node to obtain a three-dimensional fire source node; determining a transmission path of the fire extinguishing medium in the pre-constructed fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-constructed fire fighting pipe network; and generating a control instruction in the data analysis unit based on the transmission path;

[0066] The fire extinguishing control module is used to confirm that the fire extinguishing execution unit has received the control instruction from the data analysis unit, identify the target execution unit in the fire extinguishing execution unit based on the control instruction, use the target execution unit to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, and obtain the spraying pressure in real time, calculate the pressure-stabilizing valve opening based on the spraying pressure and a pre-established pressure-stabilizing valve opening calculation formula, and adjust the opening of the valve in the fire extinguishing execution unit according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

[0067] In order to solve the above problem, the present invention further provides an electronic device, comprising:

[0068] A memory storing at least one instruction; and a processor executing the instruction stored in the memory to implement the above-mentioned automatic fire extinguishing device control method based on multi-dimensional sensing.

[0069] In order to solve the above problems, the present invention also provides a computer-readable storage medium, which stores at least one instruction. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned automatic fire extinguishing device control method based on multi-dimensional sensing.

[0070] The present invention is to solve the problems described in the background technology. The present invention receives automatic control instructions and confirms an automatic control environment based on the automatic control instructions, wherein the automatic control environment includes a fire detection unit, a data analysis unit and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor and an image collector. It can be seen that the present invention takes into account the insufficient detection accuracy of complex environments, and therefore integrates temperature sensors, smoke sensors, flame sensors and image collectors to perform fire detection and obtain data in multiple dimensions. Then, after confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and the fire source parameters are obtained based on the ambient image received by the data analysis unit and the pre-constructed image recognition algorithm. The target flame height and target virtual point source height are calculated based on the fire source parameters, the pre-constructed flame height calculation formula and the pre-constructed virtual point source height calculation formula. It can be seen that the present invention has a method for calculating the target flame height and target virtual point source height before extinguishing the fire. Taking full account of the specific parameters of the fire source, the target flame horizontal extension is calculated using the target virtual point source height, ambient temperature and the pre-constructed flame horizontal extension relationship, the target flame height, target virtual point source height and target flame horizontal extension are summarized to obtain an accurate fire extinguishing node, and the accurate fire extinguishing node is calculated to obtain a three-dimensional fire source node. It can be seen that the present invention accurately locates the fire source through the specific parameters of the fire source, determines the possible vertical spread height and horizontal extension range of the flame, realizes three-dimensional dynamic monitoring of the fire development trend, and effectively solves the problem of low fire extinguishing efficiency of traditional fire extinguishing systems due to inaccurate fire source positioning. Based on the three-dimensional fire source node and the pre-constructed fire fighting pipeline network, the transmission path of the fire extinguishing medium in the pre-constructed fire extinguishing medium storage device is determined, and the control instruction is generated in the data analysis unit based on the transmission path. It can be seen that the present invention realizes the optimal configuration of fire extinguishing medium transportation through the three-dimensional fire source node and the pre-constructed fire fighting pipeline network. Taking into account factors such as pipeline length, accessory resistance, temperature correction, etc., the transmission path with the minimum pressure loss is calculated to ensure that the fire extinguishing medium reaches the fire source location quickly. After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the target execution unit is used to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, and the spraying pressure is obtained in real time. It can be seen that the present invention ensures that the fire extinguishing medium can cover the fire source by accurately matching the azimuth and pitch angle of the fire source and the target execution unit, calculates the pressure stabilizing valve opening based on the spray pressure and the pre-constructed pressure stabilizing valve opening calculation formula, and adjusts the valve opening in the fire extinguishing execution unit according to the pressure stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device. It can be seen that the present invention dynamically compares the spray pressure with the preset pressure, through K p , K i , K dWorking together, the pressure-stabilizing valve opening is quickly calculated and regulated to ensure a stable and continuous flow of extinguishing medium toward the fire source. This establishes a dynamic adjustment mechanism based on real-time feedback data, allowing for timely optimization of fire-extinguishing strategies based on dynamic changes at the fire scene. Consequently, the present invention enables accurate control of automatic fire-extinguishing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 A flowchart of a method for controlling an automatic fire extinguishing device based on multi-dimensional sensing provided by one embodiment of the present invention;

[0072] Figure 2 A functional module diagram of an automatic fire extinguishing device control system based on multi-dimensional sensing provided by one embodiment of the present invention;

[0073] Figure 3 A schematic structural diagram of an electronic device for implementing the automatic fire extinguishing device control method based on multi-dimensional sensing provided in one embodiment of the present invention.

[0074] Description of reference numerals:

[0075] 1. Electronic device; 10. Processor; 11. Memory; 12. Bus.

[0076] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0077] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0078] The embodiments of the present application provide a method for controlling an automatic fire extinguishing device based on multi-dimensional sensing. The execution entity of the method includes, but is not limited to, at least one of electronic devices such as a server or a terminal that can be configured to execute the method provided in the embodiments of the present application. In other words, the method can be executed by software or hardware installed on a terminal device or a server device, where the software can be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0079] Reference Figure 1 FIG. 1 is a flow chart of a method for controlling an automatic fire extinguishing device based on multi-dimensional sensing according to an embodiment of the present invention. In this embodiment, the method for controlling an automatic fire extinguishing device based on multi-dimensional sensing includes:

[0080] S1. Receive an automatic control instruction, and confirm an automatic control environment based on the automatic control instruction, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector.

[0081] It should be explained that the automatic control instruction is an instruction issued by the person in charge of fire safety, which is used to realize fire detection and automatic fire extinguishing in the monitored area. The automatic control environment refers to the necessary environment to enter and maintain operation after receiving the automatic control instruction. It covers all equipment and units involved in fire monitoring, analysis and fire extinguishing execution, as well as the overall working environment composed of their mutual cooperation. Among them, the automatic control environment includes a fire detection unit, a data analysis unit and a fire extinguishing execution unit. For the application of specific units, please refer to the subsequent embodiments. The embodiments of the present invention mainly aim to improve the precise control of the automatic fire extinguishing device and improve the fire extinguishing efficiency.

[0082] For example, Xiao Zhang is the person in charge of fire safety in a factory. In order to realize automatic control of the fire extinguishing device and avoid problems such as delayed fire extinguishing and fire spread caused by manual operation of the fire extinguishing device, Xiao Zhang issues the automatic control instruction and confirms the automatic control environment.

[0083] S2. After confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and fire source parameters are obtained based on the ambient image received by the data analysis unit and a pre-built image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of combustible material, and the heat release rate of the combustible material.

[0084] It is understood that the confirmation is based on the fire detection unit acquiring the ambient temperature and the ambient image, including:

[0085] Use the temperature sensor and smoke sensor to obtain the collected ambient temperature and collected smoke concentration in real time, confirm that the collected ambient temperature is greater than the preset temperature threshold and the collected smoke concentration is greater than the preset smoke concentration threshold, and confirm that the preset flame information is detected by the flame sensor, then use the collected ambient temperature as the ambient temperature and use the image collector to collect the environmental image.

[0086] Furthermore, if the collected ambient temperature is greater than a preset temperature threshold, the collected smoke concentration is lower than a preset smoke concentration threshold, or the flame sensor does not detect the preset flame information, detection continues until the automatic control instruction is released.

[0087] Furthermore, the temperature sensor is a device that can monitor the changes in ambient temperature in real time. Usually, a thermistor element is exposed to the monitoring environment so as to capture the temperature changes in time. For example, the temperature sensor can be a high-precision temperature detector made of a platinum resistor (such as Pt100), whose resistance value changes with the ambient temperature. By measuring the resistance value, an accurate temperature reading can be obtained. The smoke sensor is a device that detects the concentration of smoke particles in the air based on the principle of photoelectric scattering or ionization. The photoelectric smoke sensor based on the principle of photoelectric scattering is equipped with a light source and a photosensitive element. When smoke particles enter the sensor, they scatter light and are received by the photosensitive element, thereby triggering an alarm. The ionization smoke sensor based on the principle of ionization ionizes the air through radioactive substances and detects changes in ion current to sense smoke. The smoke sensor can usually be installed on the ceiling or wall to monitor the smoke situation at the fire scene in all directions.

[0088] It should be explained that the flame sensor is a detector that uses optical principles to identify specific spectral characteristics of flames, such as ultraviolet or infrared detection. In embodiments of the present invention, the flame sensor can quickly utilize ultraviolet and infrared detection to obtain ultraviolet light intensity under ultraviolet detection and infrared light intensity under infrared detection, and calculate the flicker frequency based on the ultraviolet and infrared light intensities. The technology for calculating the flicker frequency based on ultraviolet and infrared light intensities is prior art and will not be further described here. For example, the flame sensor can simultaneously detect both ultraviolet and infrared wavelengths of light, improving the accuracy of flame detection through cross-validation and effectively avoiding false alarms. The image acquisition device is a device used to capture image information of a fire scene, typically consisting of a high-resolution camera and its accompanying image processing chip. The camera can be a CCD (charge-coupled device) or CMOS (complementary metal oxide semiconductor) type, capable of capturing images of the fire scene at a certain frame rate (e.g., 25 frames per second). For example, if the area to be monitored is a workshop, the image acquisition device can be installed at the four corners of the workshop roof, providing optimal coverage of the entire area to be monitored, ensuring clear and comprehensive images of the fire scene.

[0089] It should be explained that the collected ambient temperature refers to the temperature collected in real time by the temperature sensor. The temperature sensor continuously acquires the collected ambient temperature and converts it into an electrical signal for transmission and processing. The collected smoke concentration refers to the smoke concentration collected in real time by the smoke sensor. When the collected ambient temperature exceeds a preset temperature threshold and the collected smoke concentration exceeds a preset smoke concentration threshold, and the flame sensor detects the preset flame information, it can be confirmed that a flame is present in the area to be monitored. Furthermore, the temperature at the time of the flame can be determined. In this case, this temperature is the ambient temperature.

[0090] It should be explained that the confirmation that the preset flame information is detected by the flame sensor includes: comparing the ultraviolet light intensity with the preset ultraviolet light intensity threshold, and the infrared light intensity with the preset infrared light intensity threshold, respectively, and after confirming that the ultraviolet light intensity is greater than or equal to the ultraviolet light intensity threshold and the infrared light intensity is greater than or equal to the infrared light intensity threshold, determining whether the flickering frequency is within the preset frequency range; if the flickering frequency is within the preset frequency range, it is confirmed that the flame sensor has detected the flame information.

[0091] Furthermore, flame-specific spectral characteristics include specific wavelength ranges and light intensities. For example, for ultraviolet detection, the wavelength range can be set to 200-400nm, and the light intensity threshold can be set to 10 -6 W / CM 2 For infrared detection, the wavelength range can be set to 760-2500nm and the light intensity threshold is 10 -4 W / CM 2 The flicker frequency is based on the natural flickering characteristics of a flame and is typically expressed as the number of times a flame flickers per unit time. The frequency range is a preset range used to determine the presence of a flame in an environment. For example, the frequency range is from a minimum of 0.5 Hz to a maximum of 20 Hz. During detection, the flame sensor measures the light intensity in the ultraviolet and infrared bands in real time and calculates their flicker frequency. If the detected ultraviolet and infrared light intensities are both greater than their respective light intensity thresholds and the flicker frequency falls within the preset frequency range (i.e., minimum frequency 0.5 Hz ≤ flicker frequency ≤ maximum frequency 20 Hz), a flame is detected, triggering subsequent fire extinguishing operations. Conversely, if the ultraviolet or infrared light intensity is below their respective light intensity thresholds, or the flicker frequency exceeds the preset frequency range, it is considered not a flame and detection continues until the automatic control command is released. In this way, the flame sensor can effectively distinguish between flames and other non-flame light sources, such as fluorescent lamps and infrared remote controls, thereby avoiding false alarms and improving the accuracy and reliability of fire detection.

[0092] It is understandable that the environmental image is an image of the fire scene taken by the image collector, including flames, smoke, and burning objects at the fire scene.

[0093] Furthermore, the fire source parameters are obtained based on the environmental image received by the data analysis unit and the pre-built image recognition algorithm, including:

[0094] Utilizing the image recognition algorithm, extracting a fire source area image from the environmental image received by the data analysis unit, identifying a circumscribed circle of the fire source area image, obtaining a circumscribed circle of the fire source range, obtaining a diameter of the circumscribed circle of the fire source range, and obtaining a range diameter;

[0095] The image resolution of the environmental image and the focal length of the camera of the image collector are obtained respectively, and the diameter of the fire source is obtained using the range diameter, the image resolution and the focal length of the camera;

[0096] Identify the environmental image to obtain the type of combustion material, and use the combustion material type to search in the pre-built combustion material feature database to obtain the heat release rate of the combustion material;

[0097] The fire source parameters are obtained by summarizing the fire source diameter, type of combustion material and heat release rate of the combustion material.

[0098] It should be explained that the image recognition algorithm refers to an algorithm designed and integrated in advance during the development phase for processing and analyzing fire scene image data. Optionally, a convolutional neural network algorithm is used as the image recognition algorithm.

[0099] It is understandable that the image of the fire source area is identified in the environmental image, and the minimum circumscribed circle of the area is drawn to obtain the minimum circumscribed circle of the fire source range. The fire source diameter is obtained by measuring the diameter of the minimum circumscribed circle and combining the image resolution and camera focal length. If the image resolution is 1920×1080 pixels, the camera focal length is 5mm, and the diameter of the circumscribed circle of the fire source range is 200 pixels, then according to the geometric relationship and camera calibration parameters, the fire source diameter is converted to 0.5 meters. Among them, the technology of obtaining the fire source diameter using range diameter, image resolution and camera focal length is an existing technology and will not be repeated here.

[0100] It should be explained that the fire source area image refers to the image containing the fire source, extracted from the environmental image captured by the image collector using an image recognition algorithm. The fire source area image typically exhibits distinctive features that distinguish it from the surrounding environment, such as higher brightness, a red or orange color shift, and unique texture features. During image processing, an image recognition algorithm is used to analyze the environmental image to identify the outline and boundaries of the flame, thereby determining the fire source area image. Texture features refer to the fact that the flame typically appears bright yellow or orange, gradually fading from the inside to red at the outer edges, with jagged or wavy edges. Furthermore, the flame's brightness changes rapidly over time, exhibiting dynamic flickering characteristics. Its transparency varies with combustion conditions and viewing angle, allowing blurred images of background objects to be transmitted through, thus creating a depth texture. The fire source diameter refers to the maximum horizontal width of the fire source, typically the straight-line distance from the outer edge of the flame to the outer edge on the other side. This is calculated by converting the diameter of the minimum circumscribed circle of the fire source area into an actual distance.

[0101] Furthermore, the environmental image is identified to identify the appearance features of the combustible material, such as color, shape, and texture, to obtain the type of combustible material, such as wood, fabric, or plastic. Optionally, a convolutional neural network algorithm is used for identification. Exemplarily, the items stored in each area of ​​the monitoring area and the type of combustible material corresponding to the item are stored in advance, and the type of combustible material is read out based on the flame area image and its position in the environmental image. The type of combustible material is searched in the combustible material feature database to obtain the heat release rate of the combustible material. For example, the heat release rate of wood is about 500kW / kg. The combustible material feature database is a database that stores the physical and chemical properties of various combustible materials under different combustion conditions and the heat release rates of different types of combustible materials.

[0102] The data analysis unit understandably captures the fire source parameters: a 0.5-meter diameter, wood as the burning material, and a heat release rate of 500 kW / kg. These parameters inform the subsequent calculations of flame height, virtual point source height, and horizontal flame extension, ultimately determining the precise extinguishing point and providing critical data support for the automated fire extinguishing system.

[0103] S3. Calculate the target flame height and the target virtual point source height based on the fire source parameters, the pre-constructed flame height calculation formula, and the pre-constructed virtual point source height calculation formula, respectively.

[0104] Furthermore, the calculating of the target flame height and the target virtual point source height based on the fire source parameters, the pre-constructed flame height calculation formula, and the pre-constructed virtual point source height calculation formula, respectively, includes:

[0105] The target flame height is calculated using the fire source parameters and the pre-built flame height calculation formula. The flame height calculation formula is as follows:

[0106] H=-1.02d+0.235Q 2 / 5

[0107] Where H represents the target flame height, d represents the diameter of the fire source, and Q represents the heat release rate of the combustion product;

[0108] The target virtual point source height is calculated using the fire source parameters and the pre-built virtual point source height calculation formula. The virtual point source height calculation formula is as follows:

[0109] Z0=-1.02d+0.083Q 2 / 5

[0110] Among them, Z0 represents the height of the target virtual point source.

[0111] It should be explained that the target flame height refers to the vertical distance from the base of the flame to the top of the flame, and the target flame height directly affects the formulation of the fire extinguishing strategy. Higher flames require stronger extinguishing medium injection pressure and a larger injection flow rate to ensure that the extinguishing medium can cover the entire flame area. The virtual point source height refers to the height between the base of the flame and the lowest point of the combustible material above the flame that meets the combustion conditions. The heat release rate of the combustible material refers to the heat released by the combustible material per unit time, reflecting the intensity of the combustion and the degree of fire danger. It is determined by searching the combustible material characteristic database, using the type of combustible material and the current fire conditions.

[0112] For example, let's assume a fire breaks out in a factory workshop. The fire source has a diameter of 0.5 meters, and the burning material is wood with a heat release rate of 500 kW / kg. Substituting these values ​​into the formula, we obtain the target flame height H = 1.45 meters and the target virtual point source height Z0 = 0.185 meters. This means that the height from the bottom of the flame to the top is 1.45 meters, and the height between the bottom of the flame and the lowest point of the combustible material above is 0.185 meters.

[0113] S4. Calculate the target flame horizontal extension using the target virtual point source height, ambient temperature, and a pre-built flame horizontal extension relationship. Summarize the target flame height, target virtual point source height, and target flame horizontal extension to obtain an accurate fire extinguishing node.

[0114] It can be understood that the flame horizontal extension relationship is as follows:

[0115]

[0116] Where L represents the horizontal extension of the target flame, and T0 represents the ambient temperature.

[0117] It should be explained that the target horizontal flame extension refers to the distance the flame extends horizontally from the center of the fire source, reflecting the horizontal spread of the flame. Obtaining the target horizontal flame extension helps determine the spray range and angle of the extinguishing medium, ensuring that the extinguishing medium covers the horizontal spread of the flame. The center of the fire source refers to the geometric center of the fire source in space and is the center point of the flame area.

[0118] For example, assuming that in the current fire scene, the ambient temperature T0 = 800K (about 527°C), the fire source diameter is 0.5 meters, the heat release rate of the burning material is 500kW / kg, the flame height H = 1.45 meters, and the target virtual point source height Z0 = 0.185 meters, substituting into the flame horizontal extension relationship, the target flame horizontal extension L = 1.1035 meters is obtained.

[0119] Furthermore, the flame height, virtual point source height, and flame horizontal extension jointly define the accurate extinguishing node of the flame in three-dimensional space. The accurate extinguishing node can be represented as a data structure, namely, {H: 1.45, Z0: 0.185, L: 1.1035}.

[0120] S5. Calculate the accurate fire extinguishing node to obtain the three-dimensional fire source node.

[0121] It should be explained that the calculation of the accurate fire extinguishing node to obtain the three-dimensional fire source node includes:

[0122] Construct a three-dimensional coordinate system, wherein the three-dimensional coordinate system includes horizontal, vertical, and vertical directions, project the horizontal extension of the target flame at the accurate fire extinguishing node into the horizontal and vertical directions respectively, obtain the projected horizontal value and the projected vertical value, calculate the sum of the target flame height and the target virtual point source height at the accurate fire extinguishing node, and obtain the flame spread height;

[0123] The three-dimensional node of the fire source is obtained based on the projected horizontal value, the projected vertical value, and the flame spread height. The three-dimensional node of the fire source is as follows:

[0124] J=(x,y,z)

[0125] Among them, J represents the three-dimensional node of the fire source, x, y, and z are the projected horizontal value, projected vertical value, and flame spread height, respectively.

[0126] Optionally, a Cartesian coordinate system is used as the three-dimensional coordinate system, and before using the Cartesian coordinate system, a known point should be selected as the coordinate origin, and the X-axis corresponding to the Cartesian coordinate system is set to represent the horizontal direction, the Y-axis represents the horizontal direction, and the Z-axis represents the vertical direction.

[0127] It should be explained that a known point is a fixed point with a certain and known position, such as the base of a pillar, the entrance to the fire scene, or other obvious and fixed reference objects. Optionally, the known point can be obtained by manual setting.

[0128] Furthermore, the three-dimensional fire source node (x, y, z), where x and y are determined by the horizontal extension of the target flame, representing the projected horizontal and vertical values, and z is determined by the target flame height and the target virtual point source height, representing the vertical flame spread height. The projected horizontal and vertical values ​​represent the horizontal and vertical positions of the flame, respectively, reflecting the horizontal extension of the flame. The flame spread height refers to the height to which the flame can extend vertically from the base of the fire source, reflecting the possible upward extension range of the flame. Adding the flame height to the virtual point source height yields the approximate flame height when burning at the virtual point source location, reflecting the possible upward extension range of the flame.

[0129] S6. Based on the three-dimensional fire source node and the pre-constructed fire protection pipe network, determine the transmission path of the fire extinguishing medium in the pre-constructed fire extinguishing medium storage device, and generate a control instruction in the data analysis unit based on the transmission path.

[0130] It should be explained that the determination of the transmission path of the fire extinguishing medium in the pre-built fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-built fire fighting pipe network includes:

[0131] Using the three-dimensional fire source node and the fire extinguishing medium storage device, multiple initial transmission paths are retrieved in the fire protection pipeline network, and the following operations are performed on each of the multiple initial transmission paths:

[0132] Obtain the pipeline length of the initial transmission path and calculate the pressure loss along the pipeline based on the pipeline length. The calculation formula is as follows:

[0133]

[0134] Wherein, ΔP represents the pressure loss along the pipeline, γ represents the friction resistance coefficient of the pipeline, q represents the operating flow rate of the fire extinguishing medium in the pipeline, D represents the inner diameter of the pipeline, T2 represents the thermodynamic temperature of the inlet fire extinguishing medium, T1 represents the thermodynamic temperature of the standard condition, ρ represents the operating density of the fire extinguishing medium in the pipeline, and S represents the length of the pipeline;

[0135] Obtain the number of pipe accessories in the initial transmission path and calculate the overall pressure loss of the pipe accessories based on the number of pipe accessories. The calculation formula is as follows:

[0136]

[0137] Where ΔP g represents the overall pressure loss of pipeline accessories, n represents the number of pipeline accessories, ρ f Indicates the standard density of the fire extinguishing medium in the pipeline, ρ a Indicates the standard density of the air in the pipeline, P 2a,i Indicates the absolute pressure at the inlet of the i-th pipeline accessory, P 2f Indicates the absolute pressure of the inlet extinguishing medium, T 2f Indicates the thermodynamic temperature of the fire extinguishing medium at the inlet of the first pipe accessory, T 2a,i represents the thermodynamic temperature of the air inlet of the i-th pipe accessory, q f Indicates the standard flow rate of the entire pipeline accessories, q a,i Indicates the standard flow rate of the i-th pipeline accessory, ΔP a,i It represents the pressure difference before and after the i-th pipe accessory is tested with air;

[0138] The total pressure loss of the initial transmission path is calculated based on the pressure loss along the path and the overall pressure loss of the pipeline accessories. The calculation formula is as follows:

[0139]

[0140] Where ΔP t represents the total pressure loss in the initial transmission path, ω are all preset coefficients;

[0141] The total pressure losses are summarized to obtain a total pressure loss set, and the transmission path of the fire extinguishing medium is confirmed using the total pressure loss set, wherein the initial transmission path corresponding to the minimum total pressure loss in the total pressure loss set is the transmission path of the fire extinguishing medium.

[0142] It should be explained that the fire protection pipe network refers to the pipe network used to transport fire extinguishing media in a building or a specific area. It is composed of pipes, valves, elbows, tees and other components, and is installed according to certain layout and design rules to cover the entire fire risk area, ensuring that the fire extinguishing medium can be quickly and efficiently transported to the fire source. The fire extinguishing medium storage device refers to equipment for storing fire extinguishing media (such as water, foam, gas, etc.), including storage tanks, gas cylinders, pressure regulating devices, etc. In the present invention, the fire extinguishing medium storage device is also integrated with the valve system. By adjusting the valve opening, the release pressure of the fire extinguishing medium can be controlled to achieve precise fire extinguishing.

[0143] It is understandable that the transmission path of the fire extinguishing medium is the optimal path from the fire extinguishing medium storage device to the three-dimensional node of the fire source.

[0144] It should be explained that retrieving multiple initial transmission paths in the fire protection pipeline network refers to using a path search algorithm to start from the starting point, traverse the entire pipeline network, and find all possible connection methods from the starting point to the target point. Among them, the location of the fire extinguishing medium storage device is taken as the starting point, and the three-dimensional node of the fire source is taken as the target point. The total pressure loss is the weighted sum of the pressure loss along the way and the overall pressure loss of the pipeline accessories. The pressure loss along the way refers to the pressure loss caused by the friction resistance generated by the blocking effect of the pipeline wall when the fire extinguishing medium flows in the pipeline. The overall pressure loss of pipeline accessories refers to the sum of the pressure losses caused by local resistance when the fire extinguishing medium passes through various pipeline accessories (such as valves, elbows, tees, etc.) in the pipeline.

[0145] In detail, the friction resistance coefficient of the pipeline can be obtained by consulting the pipeline material manual. The operating flow rate of the fire extinguishing medium in the pipeline refers to the flow rate of the fire extinguishing medium flowing through the pipeline under actual working conditions. The thermodynamic temperature of the imported fire extinguishing medium refers to the actual temperature of the fire extinguishing medium when it enters the transmission pipeline from the storage device. The thermodynamic temperature of the imported fire extinguishing medium reflects the state of the fire extinguishing medium under actual working conditions. Since the fire extinguishing medium may be affected by factors such as ambient temperature and pressure in the storage device, its actual temperature may be different from the temperature under standard conditions. The standard thermodynamic temperature refers to the ambient temperature under standard conditions (such as 20°C, 1atm). The standard thermodynamic temperature is a reference value used to convert parameters under actual working conditions into parameters under standard conditions.

[0146] It should be explained that at high temperatures, the volume of the fire extinguishing medium expands and the density decreases. In addition, under high temperature conditions, the operating flow rate and operating density may deviate from the standard value. Therefore, the thermodynamic temperature of the imported fire extinguishing medium and the thermodynamic temperature of the standard condition are introduced here to reduce the error caused by temperature changes. The operating density of the fire extinguishing medium in the pipeline refers to the density of the fire extinguishing medium when an actual fire occurs, which is affected by factors such as temperature and pressure. The pipeline length refers to the actual length of the pipeline section in the transmission path and is one of the key factors affecting the pressure loss along the way. The longer the pipeline, the longer the distance the fire extinguishing medium flows, the more energy is required to overcome frictional resistance, and the greater the pressure loss along the way.

[0147] It should be explained that the number of pipeline accessories refers to the total number of pipeline accessories contained in the transmission path from the fire extinguishing medium storage device to the three-dimensional node of the fire source. For example, if there are 3 valves and 2 elbows in the initial transmission path, then n = 5. The standard density of the fire extinguishing medium in the pipeline refers to the density of the fire extinguishing medium under standard conditions (such as 20°C, 1atm), and the unit is kilograms per cubic meter. The standard density of the air in the pipeline refers to the density of the air under standard conditions, and the unit is kilograms per cubic meter. The absolute pressure of the inlet of the i-th pipeline accessory refers to the absolute pressure of the air at the inlet of the i-th pipeline accessory, and the unit is Pascal (Pa). The absolute pressure of the imported fire extinguishing medium refers to the absolute pressure of the fire extinguishing medium when it enters the first pipeline accessory.

[0148] It should be explained that absolute pressure refers to the pressure directly acting on the surface of the pipe accessory. The thermodynamic temperature of the fire extinguishing medium at the inlet of the first pipe accessory refers to the temperature of the fire extinguishing medium when it enters the first pipe accessory. The thermodynamic temperature of the air at the inlet of the i-th pipe accessory refers to the temperature of the air when it enters the i-th pipe accessory under standard conditions. The standard flow rate through the entire pipe accessory refers to the volumetric flow rate of the fire extinguishing medium flowing through the pipe accessory under standard conditions (e.g., 20°C, 1 atm). It is used to calculate the resistance loss of the fire extinguishing medium and is expressed in cubic meters per second. The standard flow rate through the i-th pipe accessory refers to the air flow rate through the i-th pipe accessory under standard conditions. The differential pressure across the i-th pipe accessory when tested with air refers to the pressure difference between the inlet and outlet of the i-th pipe accessory when using air as the test medium under standard conditions. This value is usually determined experimentally and represents the resistance characteristics of the accessory. When calculating pressure loss using the differential pressure across the i-th pipe accessory when tested with air, the standard flow rate across the entire pipe accessory and the standard flow rate across the i-th pipe accessory must be corrected based on the flow ratio. The flow ratio is

[0149] Understandably, The main function of ω is to correct and balance the proportion of along-line pressure loss and local pressure loss in the total pressure loss calculation to improve the accuracy and adaptability of the calculation results. The relative importance of along-line pressure loss and local pressure loss may vary depending on the pipeline system. ω can adjust the weights of the two according to the characteristics of the specific pipeline system to ensure that the calculation of the total pressure loss can reasonably reflect the actual pressure loss situation.

[0150] Furthermore, a control instruction is generated based on the transmission path, where the control instruction is generated by the data analysis unit and sent to the fire extinguishing execution unit, and is used to drive the spraying operation of the fire extinguishing execution unit.

[0151] S7. After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the target execution unit is used to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, and the spraying pressure is obtained in real time.

[0152] It should be explained that, before the target execution unit is used to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, the method includes:

[0153] The azimuth of the target execution unit is calculated using the three-dimensional node of the fire source. The calculation formula is as follows:

[0154]

[0155] Where α represents the azimuth angle, and the initial position coordinates of the target execution unit are (x1, y1, z1);

[0156] The pitch angle of the target execution unit is calculated using the fire source 3D node. The calculation formula is as follows:

[0157]

[0158] Where β represents the pitch angle;

[0159] Adjust the target execution unit based on the azimuth and elevation angles.

[0160] It is understood that the target execution unit refers to the execution unit that performs the fire extinguishing operation. There are multiple execution units in the fire extinguishing execution unit, and the execution unit connected to the transmission path is identified as the target execution unit using the control instruction.

[0161] It should be explained that the azimuth angle refers to the angle at which the nozzle of the fire extinguishing device points to the fire source on the horizontal plane. Taking the fire extinguishing device as the origin, the north direction is 0°, the east is 90°, the south is 180°, and the west is 270°; the pitch angle refers to the angle between the nozzle of the fire extinguishing device and the horizontal line on the vertical plane, with positive angle upward and negative angle downward.

[0162] Furthermore, after adjusting the angle of the target execution unit and confirming the transmission path, the fire extinguishing medium is sprayed from the storage device to the fire source. The spraying pressure is the pressure of the fire extinguishing medium at the time of spraying obtained by the pressure sensor of the target execution unit.

[0163] S8. Calculate the opening of the pressure-stabilizing valve based on the injection pressure and the pre-established pressure-stabilizing valve opening calculation formula, and adjust the opening of the valve in the fire extinguishing execution unit according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

[0164] It should be explained that the calculation of the pressure stabilizing valve opening based on the injection pressure and the pre-established pressure stabilizing valve opening calculation formula, and the adjustment of the valve opening in the fire extinguishing execution unit according to the pressure stabilizing valve opening, include:

[0165] Calculate the pressure stabilizing valve opening using the injection pressure and the pre-established pressure stabilizing valve opening calculation formula;

[0166] The calculation formula for the opening of the pressure stabilizing valve is as follows:

[0167]

[0168] Among them, θ represents the opening of the pressure regulating valve, K p , K i , K d Represents proportional, integral, and differential control coefficients respectively, P setIndicates set pressure, P indicates injection pressure, and t indicates time;

[0169] Generate valve adjustment signal by using the opening of the pressure stabilizing valve;

[0170] The valve adjustment signal is used to adjust the opening of the valve in the fire extinguishing execution unit.

[0171] It's understood that the pressure-stabilizing valve opening refers to the degree of opening of the valve in the fire extinguishing medium storage device. It is used to control the flow and pressure of the fire extinguishing medium, ensuring that its injection pressure remains stable at the set pressure. The set pressure is a target pressure value pre-set during the design and operation of the fire extinguishing system to ensure that the fire extinguishing medium reaches the fire source quickly and accurately. In actual application, the set pressure can be adjusted according to different fire scenarios and system operating conditions. For example, if the fire source is large or distant, the set pressure can be appropriately increased to increase injection intensity and coverage. Conversely, if the fire source is small or close, the set pressure can be lowered to avoid over-injection and waste of resources.

[0172] In detail, K p ·(P set -P) reflects the deviation between the current injection pressure and the set pressure, and is calculated based on the proportional coefficient K p When the injection pressure is lower than the set pressure, the proportional term will increase the valve opening to increase the pressure; otherwise, it will reduce the opening. i ·∫(P set -P)dt takes into account the cumulative effect of pressure deviations over time. If the pressure deviation persists, the integral term gradually accumulates and adjusts the valve opening until the pressure deviation is eliminated. This helps eliminate static errors in the system. It reflects the rate of change of pressure deviation. It can predict the trend of pressure change and adjust the valve opening in advance, thereby improving the response speed and stability of the system.

[0173] It is understandable that adjusting the opening of the valve in the fire extinguishing execution unit according to the opening of the pressure stabilizing valve includes:

[0174] Based on the calculated pressure-stabilizing valve opening, a corresponding valve adjustment signal is generated. This valve adjustment signal is typically an electrical signal used to actuate the valve of the fire extinguishing medium storage device. Upon receipt of the valve adjustment signal, the valve opening is adjusted. For example, if the current injection pressure of the fire extinguishing medium is lower than the set pressure, indicating that the flow rate needs to be increased to reach the set pressure, the valve opening is increased; conversely, if the injection pressure is higher than the set pressure, the valve opening is decreased.

[0175] The present invention is to solve the problems described in the background technology. The present invention receives automatic control instructions and confirms an automatic control environment based on the automatic control instructions, wherein the automatic control environment includes a fire detection unit, a data analysis unit and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor and an image collector. It can be seen that the present invention takes into account the insufficient detection accuracy of complex environments, and therefore integrates temperature sensors, smoke sensors, flame sensors and image collectors to perform fire detection and obtain data in multiple dimensions. Then, after confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and the fire source parameters are obtained based on the ambient image received by the data analysis unit and the pre-constructed image recognition algorithm. The target flame height and target virtual point source height are calculated based on the fire source parameters, the pre-constructed flame height calculation formula and the pre-constructed virtual point source height calculation formula. It can be seen that the present invention has a method for calculating the target flame height and target virtual point source height before extinguishing the fire. Taking full account of the specific parameters of the fire source, the target flame horizontal extension is calculated using the target virtual point source height, ambient temperature and the pre-constructed flame horizontal extension relationship, the target flame height, target virtual point source height and target flame horizontal extension are summarized to obtain an accurate fire extinguishing node, and the accurate fire extinguishing node is calculated to obtain a three-dimensional fire source node. It can be seen that the present invention accurately locates the fire source through the specific parameters of the fire source, determines the possible vertical spread height and horizontal extension range of the flame, realizes three-dimensional dynamic monitoring of the fire development trend, and effectively solves the problem of low fire extinguishing efficiency of traditional fire extinguishing systems due to inaccurate fire source positioning. Based on the three-dimensional fire source node and the pre-constructed fire fighting pipeline network, the transmission path of the fire extinguishing medium in the pre-constructed fire extinguishing medium storage device is determined, and the control instruction is generated in the data analysis unit based on the transmission path. It can be seen that the present invention realizes the optimal configuration of fire extinguishing medium transportation through the three-dimensional fire source node and the pre-constructed fire fighting pipeline network. Taking into account factors such as pipeline length, accessory resistance, temperature correction, etc., the transmission path with the minimum pressure loss is calculated to ensure that the fire extinguishing medium reaches the fire source location quickly. After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the target execution unit is used to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, and the spraying pressure is obtained in real time. It can be seen that the present invention ensures that the fire extinguishing medium can cover the fire source by accurately matching the azimuth and pitch angle of the fire source and the target execution unit, calculates the pressure stabilizing valve opening based on the spray pressure and the pre-constructed pressure stabilizing valve opening calculation formula, and adjusts the valve opening in the fire extinguishing execution unit according to the pressure stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device. It can be seen that the present invention dynamically compares the spray pressure with the preset pressure, through K p , K i , K dWorking together, the pressure-stabilizing valve opening is quickly calculated and regulated to ensure a stable and continuous flow of extinguishing medium toward the fire source. This establishes a dynamic adjustment mechanism based on real-time feedback data, allowing for timely optimization of fire-extinguishing strategies based on dynamic changes at the fire scene. Consequently, the present invention enables accurate control of automatic fire-extinguishing devices.

[0176] like Figure 2 , which is a functional module diagram of an automatic fire extinguishing device control system based on multi-dimensional sensing provided by an embodiment of the present invention.

[0177] The multi-dimensional sensing-based automatic fire extinguishing device control system 100 described in the present invention can be installed in an electronic device. Depending on the functionality implemented, the multi-dimensional sensing-based automatic fire extinguishing device control system 100 may include a fire sensing module 101, a parameter analysis module 102, and a fire extinguishing control module 103. A module, also referred to as a unit, is a series of computer program segments that can be executed by an electronic device processor and perform a fixed function. These are stored in the electronic device's memory.

[0178] The fire sensing module 101 is configured to receive an automatic control instruction and determine an automatic control environment based on the automatic control instruction, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector;

[0179] The parameter analysis module 102 is used to confirm that the ambient temperature and ambient image are obtained based on the fire detection unit, and then transmit the ambient image to the data analysis unit, and obtain fire source parameters based on the ambient image received by the data analysis unit and the pre-constructed image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of combustible material, and the heat release rate of the combustible material; calculate the target flame height and the target virtual point source height based on the fire source parameters, the pre-constructed flame height calculation formula, and the pre-constructed virtual point source height calculation formula, respectively; calculate the target flame horizontal extension using the target virtual point source height, the ambient temperature, and the pre-constructed flame horizontal extension relationship; summarize the target flame height, the target virtual point source height, and the target flame horizontal extension to obtain an accurate fire extinguishing node; calculate the accurate fire extinguishing node to obtain a three-dimensional fire source node; determine the transmission path of the fire extinguishing medium in the pre-constructed fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-constructed fire fighting pipeline network; and generate a control instruction in the data analysis unit based on the transmission path;

[0180] The fire extinguishing control module 103 is used to confirm that the fire extinguishing execution unit has received the control instruction from the data analysis unit, identify the target execution unit in the fire extinguishing execution unit based on the control instruction, use the target execution unit to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, and obtain the spraying pressure in real time, calculate the pressure-stabilizing valve opening based on the spraying pressure and a pre-established pressure-stabilizing valve opening calculation formula, and adjust the opening of the valve in the fire extinguishing execution unit according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

[0181] In detail, the modules in the automatic fire extinguishing device control system 100 based on multi-dimensional sensing in the embodiment of the present invention are used in the same manner as above. Figure 1 The same technical means as the automatic fire extinguishing device control method based on multi-dimensional sensing described in the above are used and can produce the same technical effects, so they will not be repeated here.

[0182] like Figure 3 FIG. 1 is a schematic diagram of the structure of an electronic device for implementing a control method for an automatic fire extinguishing device based on multi-dimensional sensing provided by an embodiment of the present invention.

[0183] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a program for controlling an automatic fire extinguishing device based on multi-dimensional sensing.

[0184] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes a flash memory, a mobile hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a disk, an optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 can also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1. Furthermore, the memory 11 also includes an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed on the electronic device 1, such as the code of the automatic fire extinguishing device control method program based on multi-dimensional sensing, but can also be used to temporarily store data that has been output or is to be output.

[0185] In some embodiments, the processor 10 may be composed of an integrated circuit, such as a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor 10 is the control core (Control Unit) of the electronic device, connecting the various components of the entire electronic device using various interfaces and circuits. It executes or runs programs or modules stored in the memory 11 (such as a program for controlling an automatic fire extinguishing device based on multi-dimensional sensing, etc.), and calls data stored in the memory 11 to perform various functions of the electronic device 1 and process data.

[0186] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to enable communication between the memory 11 and at least one processor 10, etc.

[0187] Figure 3 Only the electronic device with components is shown, and it can be understood by those skilled in the art that Figure 3 The structure shown does not constitute a limitation on the electronic device 1 , and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0188] For example, although not shown, the electronic device 1 may further include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor 10 via a power management system, thereby implementing functions such as charge management, discharge management, and power consumption management through the power management system. The power source may further include any components such as one or more DC or AC power sources, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, etc. The electronic device 1 may further include a variety of sensors, a Bluetooth module, a Wi-Fi module, etc., which will not be described in detail here.

[0189] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0190] Optionally, the electronic device 1 may further include a user interface, which may be a display or an input unit (such as a keyboard). Optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0191] The program of the automatic fire extinguishing device control method based on multi-dimensional sensing stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve the following:

[0192] receiving an automatic control instruction, and determining an automatic control environment based on the automatic control instruction, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector;

[0193] After confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and fire source parameters are obtained based on the ambient image received by the data analysis unit and a pre-built image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of the burning material, and the heat release rate of the burning material;

[0194] Calculating a target flame height and a target virtual point source height based on fire source parameters, a pre-established flame height calculation formula, and a pre-established virtual point source height calculation formula, respectively;

[0195] The target flame horizontal extension is calculated using the target virtual point source height, ambient temperature and the pre-built flame horizontal extension relationship. The target flame height, target virtual point source height and target flame horizontal extension are summarized to obtain the accurate fire extinguishing node.

[0196] Calculate the accurate fire extinguishing nodes to obtain the three-dimensional nodes of the fire source;

[0197] Determining a transmission path of a fire extinguishing medium in a pre-built fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-built fire fighting pipe network, and generating a control instruction in a data analysis unit based on the transmission path;

[0198] After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the fire extinguishing medium stored in the fire extinguishing medium storage device is sprayed according to the transmission path by the target execution unit, and the spraying pressure is obtained in real time;

[0199] The pressure-stabilizing valve opening is calculated based on the injection pressure and the pre-established pressure-stabilizing valve opening calculation formula. The opening of the valve in the fire extinguishing execution unit is adjusted according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

[0200] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0201] Furthermore, if the modules / units integrated into the electronic device 1 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0202] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor of an electronic device, the computer program can implement:

[0203] receiving an automatic control instruction, and determining an automatic control environment based on the automatic control instruction, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector;

[0204] After confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and fire source parameters are obtained based on the ambient image received by the data analysis unit and a pre-built image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of the burning material, and the heat release rate of the burning material;

[0205] Calculating a target flame height and a target virtual point source height based on fire source parameters, a pre-established flame height calculation formula, and a pre-established virtual point source height calculation formula, respectively;

[0206] The target flame horizontal extension is calculated using the target virtual point source height, ambient temperature and the pre-built flame horizontal extension relationship. The target flame height, target virtual point source height and target flame horizontal extension are summarized to obtain the accurate fire extinguishing node.

[0207] Calculate the accurate fire extinguishing nodes to obtain the three-dimensional nodes of the fire source;

[0208] Determining a transmission path of a fire extinguishing medium in a pre-built fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-built fire fighting pipe network, and generating a control instruction in a data analysis unit based on the transmission path;

[0209] After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the fire extinguishing medium stored in the fire extinguishing medium storage device is sprayed according to the transmission path by the target execution unit, and the spraying pressure is obtained in real time;

[0210] The pressure-stabilizing valve opening is calculated based on the injection pressure and the pre-established pressure-stabilizing valve opening calculation formula. The opening of the valve in the fire extinguishing execution unit is adjusted according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

[0211] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only exemplary, and actual implementations may have other division methods.

[0212] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0213] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional modules.

[0214] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0215] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for controlling an automatic fire extinguishing device based on multi-dimensional sensing, characterized in that: The method comprises: receiving an automatic control instruction, and determining an automatic control environment based on the automatic control instruction, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector; After confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, the ambient image is transmitted to the data analysis unit, and fire source parameters are obtained based on the ambient image received by the data analysis unit and a pre-built image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of the burning material, and the heat release rate of the burning material; Calculating a target flame height and a target virtual point source height based on fire source parameters, a pre-established flame height calculation formula, and a pre-established virtual point source height calculation formula, respectively; The target flame horizontal extension is calculated using the target virtual point source height, ambient temperature and the pre-built flame horizontal extension relationship. The target flame height, target virtual point source height and target flame horizontal extension are summarized to obtain the accurate fire extinguishing node. Calculate the accurate fire extinguishing nodes to obtain the three-dimensional nodes of the fire source; Determining a transmission path of a fire extinguishing medium in a pre-built fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-built fire fighting pipe network, and generating a control instruction in a data analysis unit based on the transmission path; After confirming that the fire extinguishing execution unit has received the control instruction from the data analysis unit, the target execution unit is identified in the fire extinguishing execution unit based on the control instruction, and the fire extinguishing medium stored in the fire extinguishing medium storage device is sprayed according to the transmission path by the target execution unit, and the spraying pressure is obtained in real time; The pressure-stabilizing valve opening is calculated based on the injection pressure and the pre-established pressure-stabilizing valve opening calculation formula. The opening of the valve in the fire extinguishing execution unit is adjusted according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

2. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 1, characterized in that: The confirmation is based on the fire detection unit acquiring the ambient temperature and the ambient image, including: Use the temperature sensor and smoke sensor to obtain the collected ambient temperature and collected smoke concentration in real time, confirm that the collected ambient temperature is greater than the preset temperature threshold and the collected smoke concentration is greater than the preset smoke concentration threshold, and confirm that the preset flame information is detected by the flame sensor, then use the collected ambient temperature as the ambient temperature and use the image collector to collect the environmental image.

3. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 2, characterized in that: The method of obtaining fire source parameters based on the environmental image received by the data analysis unit and the pre-built image recognition algorithm includes: Utilizing the image recognition algorithm, extracting a fire source area image from the environmental image received by the data analysis unit, identifying a circumscribed circle of the fire source area image, obtaining a circumscribed circle of the fire source range, obtaining a diameter of the circumscribed circle of the fire source range, and obtaining a range diameter; The image resolution of the environmental image and the focal length of the camera of the image collector are obtained respectively, and the diameter of the fire source is obtained using the range diameter, the image resolution and the focal length of the camera; Identify the environmental image to obtain the type of combustion material, and use the combustion material type to search in the pre-built combustion material feature database to obtain the heat release rate of the combustion material; The fire source parameters are obtained by summarizing the fire source diameter, type of combustion material and heat release rate of the combustion material.

4. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 3, characterized in that: The calculating of the target flame height and the target virtual point source height based on the fire source parameters, the pre-constructed flame height calculation formula, and the pre-constructed virtual point source height calculation formula, respectively, includes: The target flame height is calculated using the fire source parameters and the pre-built flame height calculation formula. The flame height calculation formula is as follows: H=-1.02d+0.235Q 2 / 5 Where H represents the target flame height, d represents the diameter of the fire source, and Q represents the heat release rate of the combustion product; The target virtual point source height is calculated using the fire source parameters and the pre-built virtual point source height calculation formula. The virtual point source height calculation formula is as follows: Z0=-1.02d+0.083Q 2 / 5 Among them, Z0 represents the height of the target virtual point source.

5. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 4, characterized in that: The flame horizontal extension relationship is as follows: Where L represents the horizontal extension of the target flame, and T0 represents the ambient temperature.

6. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 5, characterized in that: The accurate fire extinguishing node is calculated to obtain the three-dimensional fire source node, including: Construct a three-dimensional coordinate system, wherein the three-dimensional coordinate system includes horizontal, vertical, and vertical directions, project the horizontal extension of the target flame at the accurate fire extinguishing node into the horizontal and vertical directions respectively, obtain the projected horizontal value and the projected vertical value, calculate the sum of the target flame height and the target virtual point source height at the accurate fire extinguishing node, and obtain the flame spread height; The three-dimensional node of the fire source is obtained based on the projected horizontal value, the projected vertical value, and the flame spread height. The three-dimensional node of the fire source is as follows: J=(x,y,z) Among them, J represents the three-dimensional node of the fire source, x, y, and z are the projected horizontal value, projected vertical value, and flame spread height, respectively.

7. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 6, characterized in that: The determining of the transmission path of the fire extinguishing medium in the pre-built fire extinguishing medium storage device based on the fire source three-dimensional node and the pre-built fire fighting pipe network includes: Using the three-dimensional fire source node and the fire extinguishing medium storage device, multiple initial transmission paths are retrieved in the fire protection pipeline network, and the following operations are performed on each of the multiple initial transmission paths: Obtain the pipeline length of the initial transmission path and calculate the pressure loss along the pipeline based on the pipeline length. The calculation formula is as follows: Wherein, ΔP represents the pressure loss along the pipeline, γ represents the friction resistance coefficient of the pipeline, q represents the operating flow rate of the fire extinguishing medium in the pipeline, D represents the inner diameter of the pipeline, T2 represents the thermodynamic temperature of the inlet fire extinguishing medium, T1 represents the thermodynamic temperature of the standard condition, ρ represents the operating density of the fire extinguishing medium in the pipeline, and S represents the length of the pipeline; Obtain the number of pipe accessories in the initial transmission path and calculate the overall pressure loss of the pipe accessories based on the number of pipe accessories. The calculation formula is as follows: Where ΔP g represents the overall pressure loss of pipeline accessories, n represents the number of pipeline accessories, ρ f Indicates the standard density of the fire extinguishing medium in the pipeline, P 2a,i represents the absolute pressure at the inlet of the i-th pipeline accessory, q f Indicates the standard flow rate of the entire pipeline accessories, T 2f represents the thermodynamic temperature of the fire extinguishing medium at the inlet of the first pipe accessory, ρ a Indicates the standard density of the air in the pipeline, P 2f Indicates the absolute pressure of the inlet extinguishing medium, T 2a,i represents the thermodynamic temperature of the air inlet of the i-th pipe accessory, q a,i Indicates the standard flow rate of the i-th pipeline accessory, ΔP a,i It represents the pressure difference before and after the i-th pipe accessory is tested with air; The total pressure loss of the initial transmission path is calculated based on the pressure loss along the path and the overall pressure loss of the pipeline accessories. The calculation formula is as follows: Where ΔP t represents the total pressure loss in the initial transmission path, ω are all preset coefficients; The total pressure losses are summarized to obtain a total pressure loss set, and the transmission path of the fire extinguishing medium is confirmed using the total pressure loss set, wherein the initial transmission path corresponding to the minimum total pressure loss in the total pressure loss set is the transmission path of the fire extinguishing medium.

8. The method for controlling an automatic fire extinguishing device based on multi-dimensional sensing according to claim 7, characterized in that: Before the target execution unit is used to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, the method includes: The azimuth of the target execution unit is calculated using the three-dimensional node of the fire source. The calculation formula is as follows: Where α represents the azimuth angle, and the initial position coordinates of the target execution unit are (x1, y1, z1); The pitch angle of the target execution unit is calculated using the fire source 3D node. The calculation formula is as follows: Where β represents the pitch angle; Adjust the target execution unit based on the azimuth and elevation angles.

9. The automatic fire extinguishing device control method based on multi-dimensional sensing according to claim 8, characterized in that: The method of calculating the pressure stabilizing valve opening based on the injection pressure and the pre-established pressure stabilizing valve opening calculation formula, and adjusting the valve opening in the fire extinguishing execution unit according to the pressure stabilizing valve opening, includes: Calculate the pressure stabilizing valve opening using the injection pressure and the pre-established pressure stabilizing valve opening calculation formula; The calculation formula for the opening of the pressure stabilizing valve is as follows: Among them, θ represents the opening of the pressure regulating valve, K p , K i , K d Represents proportional, integral, and differential control coefficients respectively, P set Indicates set pressure, P indicates injection pressure, and t indicates time; Generate valve adjustment signal by using the opening of the pressure stabilizing valve; The valve adjustment signal is used to adjust the opening of the valve in the fire extinguishing execution unit.

10. An automatic fire extinguishing device control system based on multi-dimensional sensing, characterized in that: The system comprises: a fire sensing module, configured to receive automatic control instructions and determine an automatic control environment based on the automatic control instructions, wherein the automatic control environment includes a fire detection unit, a data analysis unit, and a fire extinguishing execution unit, and the fire detection unit includes a temperature sensor, a smoke sensor, a flame sensor, and an image collector; a parameter analysis module for confirming that the ambient temperature and ambient image are obtained based on the fire detection unit, transmitting the ambient image to the data analysis unit, obtaining fire source parameters based on the ambient image received by the data analysis unit and a pre-constructed image recognition algorithm, wherein the fire source parameters include the fire source diameter, the type of combustible material, and the heat release rate of the combustible material; calculating the target flame height and the target virtual point source height based on the fire source parameters, a pre-constructed flame height calculation formula, and a pre-constructed virtual point source height calculation formula, respectively; calculating the target flame horizontal extension using the target virtual point source height, the ambient temperature, and a pre-constructed flame horizontal extension relationship; summarizing the target flame height, the target virtual point source height, and the target flame horizontal extension to obtain an accurate fire extinguishing node; calculating the accurate fire extinguishing node to obtain a three-dimensional fire source node; determining a transmission path of the fire extinguishing medium in the pre-constructed fire extinguishing medium storage device based on the three-dimensional fire source node and the pre-constructed fire fighting pipe network; and generating a control instruction in the data analysis unit based on the transmission path; The fire extinguishing control module is used to confirm that the fire extinguishing execution unit has received the control instruction from the data analysis unit, identify the target execution unit in the fire extinguishing execution unit based on the control instruction, use the target execution unit to spray the fire extinguishing medium stored in the fire extinguishing medium storage device according to the transmission path, and obtain the spraying pressure in real time, calculate the pressure-stabilizing valve opening based on the spraying pressure and a pre-established pressure-stabilizing valve opening calculation formula, and adjust the opening of the valve in the fire extinguishing execution unit according to the pressure-stabilizing valve opening to achieve accurate control of the automatic fire extinguishing device.

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