Automatic spraying fire extinguishing system for restraining early fire of sleep cabin

Abstract

The invention relates to the technical field of fire fighting equipment, and particularly discloses an automatic spraying fire extinguishing system for restraining an early fire in a sleep cabin. According to the invention, the fire detection module is constructed by arranging the smog, temperature and carbon monoxide multi-parameter sensors, and the water mist nozzles mounted right above the couch area are configured to form a directional spraying layout; the problems that a traditional standard response nozzle is difficult to start in the smoldering stage due to the high action temperature threshold value, excessive water stain damage and sudden oxygen concentration drop are caused by large-flow wide-coverage spraying, and a fire extinguishing agent is insufficient in coverage due to the fact that the lying posture of a person is not considered in the fixed spraying angle are solved. Early-stage accurate suppression of the fire in the sleep cabin is realized; and the personnel injury risk is reduced.

Description

An automatic sprinkler fire suppression system for early fire prevention in a sleep chamber Technical Field

[0001] This invention relates to the field of fire protection equipment technology, and in particular to an automatic sprinkler fire suppression system for early fire prevention in a sleeping pod. Background Technology

[0002] Sleeping pods, as a high-density, private temporary rest facility, are widely deployed in airports, high-speed rail stations, and commercial complexes. Due to their enclosed, soundproof design, narrow interior space, and extensive use of textiles, bedding, and electrical equipment, their fire load density is significantly higher than that of ordinary guest rooms. In the event of a fire, high-temperature smoke accumulates rapidly, and the supine position of occupants further delays their ability to escape independently. Current fire protection primarily relies on traditional automatic sprinkler systems integrated throughout the building. These systems use standard response sprinklers with high activation temperature thresholds, requiring the fire to spread to a certain extent before activation, making early intervention during the smoldering stage difficult. Furthermore, traditional sprinklers have high flow rates and wide coverage, which can easily lead to excessive water damage and a sudden drop in oxygen concentration in the confined space of sleeping pods. Additionally, the fixed spray angle does not consider the impact of the occupants' lying posture on the effectiveness of the extinguishing agent, limiting fire extinguishing efficiency and potentially exacerbating injuries.

[0003] Therefore, there is an urgent need to provide a technical solution to address the above problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an automatic sprinkler fire suppression system for early-stage fire prevention in a sleep chamber. The technical solution of this system is as follows: a fire detection module, including a smoke sensor, a temperature sensor, and a carbon monoxide sensor, used to monitor the smoke concentration, temperature, and carbon monoxide concentration in the sleep chamber in real time, and output corresponding smoke concentration signals, temperature signals, and carbon monoxide concentration signals; a control module, used to receive the smoke concentration signal, the temperature signal, and the carbon monoxide concentration signal, and generate an activation signal when the smoke concentration is greater than a first preset threshold and the temperature exceeds a second preset threshold, or when the carbon monoxide concentration is greater than a third preset threshold and the temperature exceeds the second preset threshold; and a sprinkler execution module, including at least one fine water mist nozzle, which is installed on the top wall of the sleep chamber and located directly above the sleeping area. The spray coverage of the at least one fine water mist nozzle covers the entire sleeping area and is used to spray fine water mist after receiving the activation signal.

[0005] Furthermore, the fire detection module also includes a photoelectric smoke sensor and an ionization smoke sensor. The photoelectric smoke sensor is used to output a first smoke concentration signal reflecting the concentration of visible smoke particles, and the ionization smoke sensor is used to output a second smoke concentration signal reflecting the concentration of invisible smoke particles.

[0006] Furthermore, the control module is also configured to: calculate the particle size distribution characteristic value of smoke particles based on the first smoke concentration signal and the second smoke concentration signal, and generate the start signal when the particle size distribution characteristic value of smoke particles exceeds the particle size threshold.

[0007] Furthermore, the fine water mist nozzle is a high-pressure fine water mist nozzle and includes at least two spray holes, the diameters of the at least two spray holes being different from each other.

[0008] Furthermore, the spray execution module also includes a water supply pipeline connected to each fine water mist nozzle and a water tank connected to the water supply pipeline. The water tank is equipped with a water level sensor, which is used to monitor the water level in the water tank in real time and output a water level signal.

[0009] Furthermore, the control module is also connected to the water level sensor to receive the water level signal and generate a water replenishment prompt signal when the water level is lower than a preset water level threshold.

[0010] Furthermore, it also includes a power supply module, which includes a main power supply and a backup power supply. The main power supply is used to power the fire detection module, the control module and the sprinkler execution module, and the backup power supply is used to power the fire detection module, the control module and the sprinkler execution module when the main power supply fails.

[0011] Furthermore, it also includes a manual start module, which is disposed on the inner wall of the sleep chamber and connected to the control module, and is used to send a manual start signal to the control module when triggered.

[0012] Furthermore, the control module is also configured to: dynamically adjust the first preset threshold based on the temperature, the first smoke concentration signal, and the second smoke concentration signal, wherein the relationship between the first preset threshold and the temperature, the first smoke concentration signal, and the second smoke concentration signal satisfies the formula: in, The adjusted first preset threshold, The initial first preset threshold, This refers to the smoke concentration value corresponding to the first smoke concentration signal. This represents the smoke concentration value corresponding to the second smoke concentration signal. The current temperature. This refers to the accumulated time since the first detection of smoke concentration exceeding the warning threshold. and This is the preset adjustment coefficient.

[0013] Furthermore, the control module is also used to: dynamically adjust the spray flow rate of each fine water mist nozzle according to the smoke concentration and the temperature, wherein the relationship between the spray flow rate and the smoke concentration and the temperature satisfies the following formula: in, The spray flow rate of each fine water mist nozzle is dynamically adjusted. The baseline spray flow rate for each fine water mist nozzle. The current smoke concentration, To preset the maximum smoke concentration, The current temperature. As the reference temperature, To preset the highest safe temperature, This is the preset flow rate adjustment coefficient.

[0014] The technical solution of this invention constructs a fire detection module by deploying multi-parameter sensors for smoke, temperature, and carbon monoxide, and configures a fine water mist nozzle installed directly above the sleeping area to form a directional spray layout. This solves the problems of traditional standard response nozzles, which are difficult to start during the smoldering stage due to their high activation temperature threshold; excessive water damage and a sudden drop in oxygen concentration caused by large-volume, wide-coverage spraying; and insufficient extinguishing agent coverage due to the fixed spray angle not taking into account the lying posture of the personnel. This enables early and accurate containment of fires in the sleeping pod and reduces the risk of injury to personnel.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 is a structural schematic diagram of an embodiment of an automatic sprinkler fire suppression system for early-stage fire containment in a sleep chamber according to the present invention. Detailed Implementation

[0018] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0019] Figure 1 shows a schematic diagram of an embodiment of an automatic sprinkler fire suppression system for early fire prevention in a sleep chamber provided by the present invention. As shown in Figure 1, the system includes a fire detection module 110, which includes a smoke sensor, a temperature sensor, and a carbon monoxide sensor, respectively used to monitor the smoke concentration, temperature, and carbon monoxide concentration in the sleep chamber in real time, and output smoke concentration signal, temperature signal, and carbon monoxide concentration signal accordingly.

[0020] Among them, a smoke sensor refers to a device used to detect the concentration of smoke particles in the air; for example, in the sleep pod S01 in an airport terminal, a smoke sensor installed on the ceiling monitors the air inside the pod in real time. When a cigarette butt ignites the bed sheet, causing smoldering, the smoke sensor detects that the smoke concentration has risen to 0.5% / m³. A temperature sensor refers to a device used to detect the ambient temperature; for example, a temperature sensor installed on the ceiling of sleep pod S01 monitors the temperature inside the pod in real time. When smoldering occurs, the temperature sensor detects that the temperature inside the pod has risen from 25°C to 42°C. A carbon monoxide sensor refers to a device used to detect the concentration of carbon monoxide gas in the air; for example, a carbon monoxide sensor installed on the ceiling of sleep pod S01 monitors the carbon monoxide concentration inside the pod in real time. When the bed sheet is smoldering, the carbon monoxide sensor detects that the carbon monoxide concentration has reached 80 ppm.

[0021] A sleep pod refers to a high-density, private temporary rest facility, typically deployed in public places; for example, sleep pod S01 in the waiting hall of an airport terminal has an interior space of approximately 3 square meters and is equipped with a bed and electrical equipment. Smoke concentration refers to the content of smoke particles per unit volume of air, usually expressed as obscuration / m³ or mg / m³. 3 The smoke sensor measures the current smoke concentration as 0.5% / m³. Temperature refers to the ambient thermodynamic temperature, usually expressed in degrees Celsius; for example, the temperature sensor measures the current cabin temperature as 42°C. Carbon monoxide concentration refers to the amount of carbon monoxide gas per unit volume of air, usually expressed in ppm; for example, the carbon monoxide sensor measures the current carbon monoxide concentration as 80 ppm.

[0022] The smoke concentration signal refers to the electrical signal output by the smoke sensor, the magnitude of which corresponds to the smoke concentration value; for example, a voltage signal of 2.5V output by the smoke sensor corresponds to a smoke concentration of 0.5% / m³. The temperature signal refers to the electrical signal output by the temperature sensor, the magnitude of which corresponds to the temperature value; for example, a current signal of 8mA output by the temperature sensor corresponds to a temperature of 42℃. The carbon monoxide concentration signal refers to the electrical signal output by the carbon monoxide sensor, the magnitude of which corresponds to the carbon monoxide concentration value; for example, a voltage signal of 1.2V output by the carbon monoxide sensor corresponds to a carbon monoxide concentration of 80ppm.

[0023] The control module 120 is used to receive the smoke concentration signal, the temperature signal and the carbon monoxide concentration signal, and generate a start signal when the smoke concentration is greater than a first preset threshold and the temperature exceeds a second preset threshold, or when the carbon monoxide concentration is greater than a third preset threshold and the temperature is greater than a second preset threshold.

[0024] The first preset threshold refers to the pre-set upper limit of smoke concentration alarm; for example, the system sets the first preset threshold to 0.3% / m, and an alarm is triggered when the smoke concentration exceeds 0.3% / m and other conditions are met. The second preset threshold refers to the pre-set upper limit of temperature alarm; for example, the system sets the second preset threshold to 40℃, and an alarm is triggered when the temperature exceeds 40℃ and other conditions are met. The third preset threshold refers to the pre-set upper limit of carbon monoxide concentration alarm; for example, the system sets the third preset threshold to 50ppm, and an alarm is triggered when the carbon monoxide concentration exceeds 50ppm and other conditions are met. The activation signal refers to the command signal issued by the control module after determining that the fire conditions are met, used to trigger the sprinkler execution module to work; for example, when the smoke concentration of 0.5% / m is greater than the first preset threshold of 0.3% / m and the temperature of 42℃ is greater than the second preset threshold of 40℃, the control module generates an activation signal and sends it to the fine water mist nozzles.

[0025] The spray execution module 130 includes at least one fine water mist nozzle, which is installed on the top wall of the sleeping chamber and located directly above the sleeping area. The spray coverage of the at least one fine water mist nozzle covers the entire sleeping area and is used to spray fine water mist after receiving the start signal.

[0026] Here, a fine water mist nozzle refers to a device capable of atomizing water into tiny droplets for spraying; for example, a high-pressure fine water mist nozzle is installed on the top wall of the sleep chamber S01, located directly above the sleeping platform. The nozzle begins spraying fine water mist after receiving a start signal. The sleeping platform area refers to the area within the sleep chamber where personnel lie down and rest; for example, the sleeping platform area of ​​sleep chamber S01 is a bed 2m long and 1m wide, and the fine water mist nozzle is installed directly over this area. The spray coverage area refers to the spatial area that the fine water mist nozzle can cover when spraying; for example, the spray coverage area of ​​this fine water mist nozzle is designed as a circular area with a diameter of 2m, completely covering the entire sleeping platform area. Spraying fine water mist means that the fine water mist nozzle sprays water in the form of tiny droplets; for example, after the nozzle is activated, it sprays fine water mist at a pressure of 10MPa, with an average droplet diameter of less than 100μm.

[0027] The technical solution of this embodiment constructs a fire detection module by deploying multi-parameter sensors for smoke, temperature and carbon monoxide, and configures fine water mist nozzles installed directly above the sleeping area to form a directional spray layout. This solves the problems of traditional standard response nozzles being difficult to start during the smoldering stage due to their high activation temperature threshold, excessive water damage and a sudden drop in oxygen concentration caused by large-volume, wide-coverage spraying, and insufficient extinguishing agent coverage due to fixed spraying angles that do not take into account the lying posture of personnel. This enables early and accurate containment of fires in sleeping pods and reduces the risk of personal injury.

[0028] In one alternative embodiment, the fire detection module 110 further includes a photoelectric smoke sensor and an ionization smoke sensor, wherein the photoelectric smoke sensor is used to output a first smoke concentration signal reflecting the concentration of visible smoke particles, and the ionization smoke sensor is used to output a second smoke concentration signal reflecting the concentration of invisible smoke particles.

[0029] Among them, photoelectric smoke sensors refer to sensors that detect smoke particles using the principle of light scattering, mainly used to detect visible smoke particles; for example, the photoelectric smoke sensor installed in the sleep chamber S01 detected a visible smoke particle concentration of 0.3% / m³ in the early stage of smoldering. Ionization smoke sensors refer to sensors that detect smoke particles using the principle of ionization chambers, mainly used to detect invisible smoke particles; for example, the ionization smoke sensor installed in the sleep chamber S01 detected an invisible smoke particle concentration of 0.2% / m³ in the early stage of smoldering.

[0030] The visible smoke particle concentration refers to the content of larger smoke particles capable of scattering light in the air; for example, the first smoke concentration signal output by the photoelectric smoke sensor corresponds to a visible smoke particle concentration of 0.3% / m. The first smoke concentration signal refers to the electrical signal output by the photoelectric smoke sensor representing the visible smoke particle concentration; for example, the photoelectric smoke sensor outputs a 2.0V voltage signal as the first smoke concentration signal.

[0031] The concentration of invisible smoke particles refers to the content of small smoke particles in the air that do not easily scatter light; for example, the second smoke concentration signal output by the ionization smoke sensor corresponds to an invisible smoke particle concentration of 0.2% / m. The second smoke concentration signal refers to the electrical signal output by the ionization smoke sensor that represents the concentration of invisible smoke particles; for example, the ionization smoke sensor outputs a 1.5V voltage signal as the second smoke concentration signal.

[0032] In the above-mentioned optional methods, photoelectric and ionization smoke sensors are further added to the fire detection module to output signals reflecting the concentration of visible and invisible smoke particles, respectively, thereby expanding the physical spectrum of smoke detection and improving early identification capabilities.

[0033] In an alternative embodiment, the control module 120 is further configured to: calculate a characteristic value of smoke particle size distribution based on the first smoke concentration signal and the second smoke concentration signal, and generate the start signal when the characteristic value of smoke particle size distribution exceeds a particle size threshold.

[0034] The characteristic value of smoke particle size distribution refers to a characteristic parameter reflecting the size distribution of smoke particles, calculated based on the ratio of visible to invisible smoke particle concentrations. For example, the control module calculates a characteristic value of 1.33 for smoke particle size distribution based on a first smoke concentration signal of 2.0V and a second smoke concentration signal of 1.5V. "Exceeding the particle size threshold" means that the characteristic value of smoke particle size distribution is greater than a preset particle size threshold. For example, if the particle size threshold is set to 1.2, the control module generates a start signal when the calculated characteristic value of 1.33 exceeds 1.2.

[0035] Specifically, the characteristic value of smoke particle size distribution is a feature parameter constructed by combining the ratio of the output of photoelectric sensor and ionization sensor with the difference in smoke particle size distribution between the smoldering stage and the open flame stage in fire dynamics. The smoldering stage is dominated by invisible small-diameter particles, while the open flame stage is dominated by visible large-diameter particles. The particle size distribution characteristic value can distinguish the fire development stage and activate the spray system accordingly.

[0036] In the above-mentioned optional methods, the particle size distribution characteristic value is further calculated based on the dual-mode smoke signal, and the spray is triggered when the particle size distribution characteristic value exceeds the threshold, thereby improving the targeting of the start-up criterion to the physical properties of the smoke.

[0037] In one alternative embodiment, the fine water mist nozzle is a high-pressure fine water mist nozzle and includes at least two spray holes, the diameters of the at least two spray holes being different from each other.

[0038] High-pressure fine water mist nozzles refer to fine water mist nozzles with operating pressures higher than conventional nozzles (typically greater than 3.5 MPa); for example, the high-pressure fine water mist nozzle installed in the sleep chamber S01 operates at a pressure of 10 MPa. Spray orifices refer to the tiny openings on the fine water mist nozzle used to spray water; for example, this high-pressure fine water mist nozzle contains three spray orifices. Different orifice diameters mean that the diameters of the different spray orifices on the nozzle are different; for example, the orifice diameters of the three spray orifices are 0.3 mm, 0.5 mm, and 0.8 mm, respectively, to achieve a distribution of droplets with different particle sizes.

[0039] Among the above-mentioned optional methods, high-pressure fine water mist nozzles with different orifice diameters are further used to generate differentiated droplets through multi-pore structure to optimize coverage and penetration, and enhance the uniformity of fire extinguishing agent distribution in the fire-fighting area.

[0040] In one alternative embodiment, the spray execution module 130 further includes a water supply pipeline connected to each fine water mist nozzle and a water tank connected to the water supply pipeline. The water tank is equipped with a water level sensor, which is used to monitor the water level in the water tank in real time and output a water level signal.

[0041] The water supply pipeline refers to the piping system connecting the water source to the fine water mist nozzles; for example, a stainless steel water supply pipeline with a diameter of 15mm connects the water tank to the fine water mist nozzles. The water tank refers to the container storing firefighting water; for example, the S01 sleep chamber system is equipped with a 20L stainless steel water tank containing 15L of clean water. The water level sensor refers to the device used to detect the water level in the tank; for example, a float-type water level sensor installed in the tank monitors the water level in real time and outputs a water level signal. The water level signal refers to the electrical signal output by the water level sensor reflecting the water level in the tank; for example, a 4mA current signal output by the water level sensor corresponds to a water level of 15L in the tank.

[0042] In the above-mentioned optional methods, water supply pipelines, water tanks and water level sensors are further configured to monitor the water level in the water tank in real time and output water level signals to ensure the transparency of the fire-fighting water reserve status and the continuous supply capacity.

[0043] In an alternative embodiment, the control module 120 is also connected to the water level sensor to receive the water level signal and generate a water replenishment prompt signal when the water level is lower than a preset water level threshold.

[0044] The preset water level threshold refers to the minimum allowable water level in the tank, set in advance. For example, the system sets the water level threshold to 5L, and issues a water replenishment reminder when the water level drops below 5L. The water replenishment reminder signal is a signal issued by the control module to remind users to replenish water when the water level in the tank is below the preset threshold. For example, when the water level sensor outputs a signal indicating that the water level has dropped to 4L, the control module generates a water replenishment reminder signal and sends it to the monitoring center.

[0045] In the above-mentioned optional methods, a water level signal is further received and a water replenishment prompt signal is generated when the water level is lower than a preset threshold, so as to promptly remind the user to replenish the fire extinguishing water and avoid the failure of the fire extinguishing function due to insufficient water supply.

[0046] In an alternative embodiment, a power supply module is also included, comprising a main power supply and a backup power supply. The main power supply is used to power the fire detection module 110, the control module 120, and the sprinkler execution module 130, and the backup power supply is used to power the fire detection module 110, the control module 120, and the sprinkler execution module 130 when the main power supply fails.

[0047] The main power supply refers to the conventional power source that powers the system normally; for example, the S01 sleep chamber system uses a 220V AC mains power supply to power the fire detection module, control module, and sprinkler execution module. The backup power supply refers to the backup power source that automatically activates when the main power supply fails; for example, the system has a built-in 12V battery as a backup power source, which automatically switches power when the main power supply fails to ensure continuous system operation.

[0048] In the above-mentioned optional methods, a main power supply and a backup power supply are further configured. When the main power supply fails, the backup power supply supplies power to the fire detection, control and sprinkler execution modules to ensure uninterrupted operation of the fire protection function.

[0049] In an alternative embodiment, a manual start module is also included, which is disposed on the inner wall of the sleep chamber and connected to the control module 120, and is used to send a manual start signal to the control module 120 when triggered.

[0050] Among them, the manual start signal refers to the signal generated by personnel to start the sprinkler system; for example, the inner wall of the sleep chamber S01 is equipped with a red manual start button. When the personnel in the chamber discover a fire, they press the button to send a manual start signal to the control module, and the control module then generates a start signal.

[0051] In one of the above-mentioned alternative methods, a manual start module is further arranged on the inner wall of the sleep chamber. When triggered, it sends a manual start signal to the control module, providing the personnel in the chamber with an emergency start procedure for the sprinkler system.

[0052] In an optional embodiment, the control module 120 is further configured to: dynamically adjust the first preset threshold based on the temperature, the first smoke concentration signal, and the second smoke concentration signal, wherein the relationship between the first preset threshold and the temperature, the first smoke concentration signal, and the second smoke concentration signal satisfies the formula: in, The adjusted first preset threshold, The initial first preset threshold, This refers to the smoke concentration value corresponding to the first smoke concentration signal. This represents the smoke concentration value corresponding to the second smoke concentration signal. The current temperature. This refers to the accumulated time since the first detection of smoke concentration exceeding the warning threshold. and This is the preset adjustment coefficient.

[0053] It should be noted that the above formula is based on the physicochemical characteristics of smoldering fires. It uses the product of visible and invisible smoke concentrations as a comprehensive indicator of fire intensity. Simultaneously, it introduces the reciprocal of the current temperature and an exponential decay factor over time to simulate the dynamic evolution of smoke concentration and temperature over time in the early stages of a fire. A preset adjustment coefficient controls the contribution weight of each parameter, and finally, an adjustment is added to the initial preset threshold to form a new threshold. The exponential decay factor in this formula... Based on the decay law of smoke concentration over time in fire dynamics, when the smoke concentration is first detected to exceed the warning threshold, if the temperature does not rise synchronously and the carbon monoxide concentration does not continue to rise, it indicates that it may be a source of interference rather than a real fire. The threshold is then gradually returned to its initial value through exponential decay to avoid false alarms. If the temperature continues to rise, the numerator... medium temperature Increasing this value leads to a decrease in the adjustment amount, preventing excessive threshold shift. Preset adjustment coefficient. The value ranges from 0.1 to 0.5. The value ranges from 0.01 to 0.1, and the specific value is determined experimentally based on the sleep chamber volume and fire load density. The above formula dynamically adjusts the first preset threshold, allowing the alarm threshold to adapt to the fire's development. It lowers the threshold in the early stages of a fire to provide early warning, and raises the threshold when there is no open flame to avoid false alarms, thereby improving detection accuracy and anti-interference capabilities.

[0054] In the above-mentioned optional methods, the first preset threshold is further dynamically adjusted based on the temperature, the first smoke concentration signal and the second smoke concentration signal, so that the activation threshold is adaptively adjusted with the change of fire parameters, reducing misjudgments caused by environmental interference.

[0055] In an alternative embodiment, the control module 120 is further configured to: dynamically adjust the spray flow rate of each fine water mist nozzle according to the smoke concentration and the temperature, wherein the spray flow rate and the smoke concentration and the temperature satisfy the formula: in, The spray flow rate of each fine water mist nozzle is dynamically adjusted. The baseline spray flow rate for each fine water mist nozzle. The current smoke concentration, To preset the maximum smoke concentration, The current temperature. As the reference temperature, To preset the highest safe temperature, This is the preset flow rate adjustment coefficient.

[0056] It should be noted that the above formula is based on the direct proportionality between fire intensity and firefighting demand. The ratio of the current smoke concentration to the preset maximum smoke concentration is used as the smoke dimension normalization index, and the ratio of the difference between the current temperature and the baseline temperature to the difference between the preset maximum safe temperature and the baseline temperature is used as the temperature dimension normalization index. These two are multiplied by a preset flow rate adjustment coefficient to form an increment factor, which is then multiplied by the baseline flow rate to obtain the dynamically adjusted spray flow rate. This formula uses a multiplicative coupling method to handle both smoke and temperature dimensions. Based on the positive correlation between smoke concentration and temperature in fire science, when both increase simultaneously, the increment factor increases rapidly, achieving a non-linear response in the spray flow rate. When only a single parameter increases, the increment factor is smaller, avoiding over-spraying due to sensor drift or transient interference. The above formula dynamically adjusts the spray flow rate of each fine water mist nozzle based on real-time monitored smoke concentration and temperature, matching the water volume to the fire's development level. When the fire is small, the water volume is reduced to minimize water damage; when the fire intensifies, the water volume is increased to improve firefighting efficiency, achieving precise firefighting and resource conservation.

[0057] Among the above-mentioned optional methods, the spray flow rate of each fine water mist nozzle is further dynamically adjusted according to the smoke concentration and temperature to achieve real-time matching between the spray volume and the fire intensity, taking into account both fire extinguishing efficiency and water stain control requirements.

[0058] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

[0059] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and represent a limitation on a specific order or sequence. Where appropriate, the order of use for similar objects can be interchanged so that the embodiments of this application described herein can be implemented in an order other than that shown or described.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic sprinkler fire suppression system for early fire prevention in a sleep chamber, characterized in that, The system includes: a fire detection module, comprising a smoke sensor, a temperature sensor, and a carbon monoxide sensor, used to monitor the smoke concentration, temperature, and carbon monoxide concentration in the sleeping chamber in real time, and output corresponding smoke concentration signals, temperature signals, and carbon monoxide concentration signals; a control module, used to receive the smoke concentration signal, the temperature signal, and the carbon monoxide concentration signal, and generate a start signal when the smoke concentration is greater than a first preset threshold and the temperature exceeds a second preset threshold, or when the carbon monoxide concentration is greater than a third preset threshold and the temperature exceeds the second preset threshold; and a spray execution module, comprising at least one fine water mist nozzle, the at least one fine water mist nozzle being installed on the top wall of the sleeping chamber and located directly above the sleeping area, the spray coverage of the at least one fine water mist nozzle covering the entire sleeping area, used to spray fine water mist after receiving the start signal.

2. The automatic sprinkler fire suppression system for early fire prevention in the sleep chamber according to claim 1, characterized in that, The fire detection module also includes a photoelectric smoke sensor and an ionization smoke sensor. The photoelectric smoke sensor is used to output a first smoke concentration signal reflecting the concentration of visible smoke particles, and the ionization smoke sensor is used to output a second smoke concentration signal reflecting the concentration of invisible smoke particles.

3. The automatic sprinkler fire suppression system for early fire prevention in the sleep chamber according to claim 2, characterized in that, The control module is further configured to: calculate the particle size distribution characteristic value of smoke particles based on the first smoke concentration signal and the second smoke concentration signal, and generate the start signal when the particle size distribution characteristic value of smoke particles exceeds the particle size threshold.

4. The automatic sprinkler fire suppression system for early fire prevention in the sleep chamber according to claim 1, characterized in that, The fine water mist nozzle is a high-pressure fine water mist nozzle and includes at least two spray holes, the diameters of the at least two spray holes being different from each other.

5. The automatic sprinkler fire suppression system for early fire prevention in the sleep chamber according to claim 4, characterized in that, The spray execution module also includes a water supply pipeline connected to each fine water mist nozzle and a water tank connected to the water supply pipeline. A water level sensor is installed in the water tank to monitor the water level in the water tank in real time and output a water level signal.

6. The automatic sprinkler fire suppression system for early fire prevention in a sleep chamber according to claim 5, characterized in that, The control module is also connected to the water level sensor to receive the water level signal and generate a water replenishment prompt signal when the water level is lower than a preset water level threshold.

7. The automatic sprinkler fire suppression system for early fire prevention in the sleep chamber according to claim 1, characterized in that, It also includes a power module, which includes a main power supply and a backup power supply. The main power supply is used to power the fire detection module, the control module and the sprinkler execution module, and the backup power supply is used to power the fire detection module, the control module and the sprinkler execution module when the main power supply fails.

8. The automatic sprinkler fire suppression system for early fire prevention in a sleep chamber according to claim 1, characterized in that, It also includes a manual start module, which is disposed on the inner wall of the sleep chamber and connected to the control module, and is used to send a manual start signal to the control module when triggered.

9. The automatic sprinkler fire suppression system for early fire prevention in a sleep chamber according to claim 2, characterized in that, The control module is further configured to: dynamically adjust the first preset threshold based on the temperature, the first smoke concentration signal, and the second smoke concentration signal, wherein the relationship between the first preset threshold and the temperature, the first smoke concentration signal, and the second smoke concentration signal satisfies the formula: in, The adjusted first preset threshold, The initial first preset threshold, This refers to the smoke concentration value corresponding to the first smoke concentration signal. This represents the smoke concentration value corresponding to the second smoke concentration signal. The current temperature. This refers to the accumulated time since the first detection of smoke concentration exceeding the warning threshold. and This is the preset adjustment coefficient.

10. The automatic sprinkler fire suppression system for early fire prevention in a sleep chamber according to claim 5, characterized in that, The control module is further configured to: dynamically adjust the spray flow rate of each fine water mist nozzle according to the smoke concentration and the temperature, wherein the relationship between the spray flow rate and the smoke concentration and the temperature satisfies the following formula: in, The spray flow rate of each fine water mist nozzle is dynamically adjusted. The baseline spray flow rate for each fine water mist nozzle. The current smoke concentration, To preset the maximum smoke concentration, The current temperature. As the reference temperature, To preset the highest safe temperature, This is the preset flow rate adjustment coefficient.

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