Automatic Water-Damage Mitigation Valve Control System

Abstract

The present invention relates to an automatic shut-off valve control system for preventing water damage, and more specifically, to an automatic shut-off valve control system for preventing and minimizing water damage by linking an alarm valve unit (100), a smoke detection unit (200), a flow detection sensor (180), first and second pressure gauges (120, 140), a pressure switch (130), a control unit (300), and an alarm system (400) of a sprinkler system to selectively perform water supply maintenance in a fire situation and automatic shut-off of water leakage in a non-fire state.

Description

Technology Field

[0001] The present invention relates to an automatic shut-off valve control system for preventing water damage, and more specifically, to an automatic shut-off valve control system for preventing and minimizing water damage by linking an alarm valve unit (100), a smoke detection unit (200), a flow detection sensor (180), first and second pressure gauges (120, 140), a pressure switch (130), a control unit (300), and an alarm system (400) of a sprinkler system to selectively perform water supply maintenance in a fire situation and automatic shut-off of water leakage in a non-fire state. Background Technology

[0003] Generally, sprinkler systems are representative firefighting equipment designed to facilitate initial fire suppression by automatically initiating water discharge upon the occurrence of a fire. Typically, the piping system is equipped with a flow detection switch, pressure gauge, pressure switch, test valve, drain valve, and liquid level monitoring device, centered around an alarm valve. Even when integrated with a building management system, the system typically interprets on-site flow or pressure change signals as simple threshold values ​​to trigger alarms or control pump operation.

[0004] Meanwhile, in large-scale buildings, water damage can occur due to non-fire water flow, or leakage, in sprinkler systems. Even if a flow signal is generated due to various causes such as alarm valve leakage, pipe defects, freezing, poor construction, or malfunction testing, if it is not detected or is mistaken for a fire and leakage continues, extensive flooding damage occurs, and secondary damage also occurs in order to repair it.

[0005] Conventional technologies for preventing such water damage rely on a single type of detection signal or make judgments based solely on the absolute value of the flow rate or whether it persists for a certain period of time,

[0006] There was a risk that limited sprinkler water discharge in the event of an actual fire could have a fatal impact on fire prevention functions, and there are reports of problems where water damage occurs directly due to weak leak detection capabilities in non-fire situations.

[0007] As such, conventional valve systems and sprinkler control technologies are currently lacking sufficient operational and verification systems to minimize water damage caused by non-fire water flow while simultaneously ensuring the safety of water supply in the event of an actual fire. Prior art literature

[0009] Patent Document (001) Republic of Korea Registered Patent No. 10-1775292 (Registered on Aug. 30, 2017) The problem to be solved

[0010] The technical objective of the present invention is to solve the aforementioned problems or necessities by providing a control logic that reliably distinguishes between fire water discharge and non-fire water flow by fusing the temporal patterns of smoke signals, flow rate signals, and pressure signals, thereby supplementing the limitations of relying solely on the presence or absence of smoke in sprinkler systems for determination.

[0011] Another objective of the present invention is to provide a smoke non-detection state determination and a fire priority interlock so that water supply is not cut off during an actual fire, even if a smoke non-detection state occurs due to smoke detector failure, response delay, communication disconnection, etc.

[0012] Another objective of the present invention is to automatically close the primary valve when non-fire flow continues to minimize water damage caused by flooding, while eliminating the risk of misidentification as a fire through differential pressure changes and high flow rate patterns.

[0013] Another objective of the present invention is to verify the entire process of remote notification of judgment alarms via loopback through test valve operation and simulation test modes, and to safely bypass the logic during the test period and automatically return.

[0014] Another objective of the present invention is to ensure operational reliability that enables cause identification and audit tracking through data logging including pre-post buffers before and after an event occurs, and the assignment of timestamps and reason codes.

[0015] Another objective of the present invention is to realize integrated notification and status monitoring linked to a building management system through a remote control interface and an alarm system including on-site display means and remote notification means.

[0016] Another objective of the present invention is to improve the early warning performance of micro-leaks and multi-head opening patterns by adaptively correcting threshold values ​​to reflect variations according to the field environment and time of day, or through lightweight artificial intelligence augmentation.

[0017] Another objective of the present invention is to ensure safety and suppress malfunctions by having the control unit apply basic safety policies and ratching reset authority management even in ambiguous situations, such as power outage and restoration test operations.

[0018] Another objective of the present invention is to standardize the wiring structure and interface between the alarm valve unit, smoke detection unit, control unit, and alarm system to enhance consistency in design, construction, and maintenance, as well as interoperability.

[0020] Meanwhile, the technical problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0022] An automatic shut-off valve control system for preventing water damage according to one embodiment of the present invention for realizing the above-described problem may include an alarm valve unit (100) equipped with a first valve (110) installed in the first side piping and a first pressure gauge (120) for measuring the first side pressure, a pressure switch (130) placed inside or outside the casing and a second pressure gauge (140) for measuring the second side pressure, a test valve (150) for applying a test flow rate and a drain valve (160), a liquid level glass (170) for visually checking the water level inside the piping, and a flow rate detection sensor (180) for detecting the occurrence of water flow.

[0023] Additionally, it may include a smoke detection unit (200) configured to detect smoke in a sprinkler area and generate a smoke detection signal.

[0024] Additionally, it may include a control unit (300) configured to collect signals from the flow rate sensing sensor (180), the first pressure gauge (120), the second pressure gauge (140), the pressure switch (130), and the smoke detection unit (200).

[0025] And, it may include an alarm system (400) that includes a field display means and a remote notification means and is configured to generate a leak alarm when the control unit (300) determines that there is a leak.

[0026] Here, the control unit (300) may be characterized by being configured to determine a leak state when water flow detection persists for a predetermined time in a smoke-free state and output a closing drive signal to the first valve (110), and to determine a fire state when smoke detection or a sudden pressure drop and a preset high flow rate pattern are detected and output an interlock control signal to maintain the first valve (110) in an open state.

[0027] Meanwhile, the smoke detection unit (200) may be characterized by including a first smoke detector (210) and a second smoke detector (220) having a plurality of different detection principles in a sprinkler area, and the control unit (300) may be configured to disable the leak judgment logic or perform a delayed reconfirmation procedure by setting the smoke non-detection state to a non-trust state when a malfunction or communication disconnection state of the smoke detection unit (200) is detected.

[0028] Here, the first valve (110) may be characterized as being a solenoid-driven non-power closed type (NC) that closes automatically in the event of a power outage, and may be equipped with an override handle for manual operation on-site.

[0029] At this time, the control unit (300) is configured to process the leak judgment as valid after applying a predetermined water flow duration to the water flow detection, and is configured to increase the reliability of the fire judgment when the differential pressure changes above a predetermined threshold value by referring to the differential pressure information from the first pressure gauge (120) and the second pressure gauge (140) and the state of the pressure switch (130) as an auxiliary judgment signal, and when a test input indicating that the test valve (150) is open is applied, the control unit (300) is configured to bypass the leak judgment logic for a predetermined time and then automatically return to its original state when the timeout ends.

[0030] In addition, the control unit (300) may be characterized by being equipped with a smoke detection unit integrity inspection module (310), a flow rate pressure-based fire determination module (320), and a time pattern determination module (330).

[0031] At this time, the soundness inspection module (310) of the smoke detection unit is configured to monitor the soundness of the smoke detection unit (200) by monitoring the termination resistance of the detector line and inspecting the loop current or voltage tolerance range to determine that an open circuit, short circuit, or deviation from the tolerance range is a fault. It is configured to determine that a timeout exceeding, accumulation of CRC errors, or sequence discontinuity is a communication disconnection or response delay by performing periodic polling and heartbeat response time measurement for the addressable detector. It is configured to determine that the absence of contamination, self-diagnosis codes, or remote self-test responses provided by the detector itself is a sign of a fault. When at least one of a fault, response delay, or communication disconnection is detected, the smoke detection failure state is determined as a smoke detection failure state. Even if water flow detection occurs in this state, the closure of the first valve (110) is prohibited or a delay reconfirmation procedure is performed.

[0032] Additionally, the flow rate pressure-based fire determination module (320) may be characterized by being configured to determine a fire state when the pressure drop rate measured by the second pressure gauge (140) exceeds a preset reference pressure drop rate and the flow rate detected by the flow rate detection sensor (180) exceeds a preset high flow rate threshold, even when there is no smoke detection signal, and to output an interlock control signal to maintain the first valve (110) in an open state or to forcibly open it.

[0033] And, the time pattern determination module (330) may be characterized by calculating how quickly the flow rate increases and how quickly the pressure drops based on the values ​​obtained from the flow rate detection sensor (180) and the first and second pressure gauges (120, 140) over time, and determining that if the flow rate continues to exceed a predetermined high standard and the pressure drop rate is also faster than the predetermined standard for a certain period of time or longer, it is determined as a fire pattern, and if the flow rate remains below a predetermined low standard and the pressure drop rate remains within an allowable range for a certain period of time or longer, it is determined as a leakage pattern.

[0034] Meanwhile, the control unit (300) is configured to transmit control information including at least one of the first valve (110) status, flow rate, pressure, smoke signal, judgment result, and event log to the alarm system (400) and the building management system through the remote control interface (500), and is configured to perform a loopback test of judgment, alarm, and remote notification by injecting virtual flow rate and virtual pressure events without opening the test valve (150), and is configured such that the log generated in the test mode is separated from the operation log and stored with a distinguishing flag. Effects of the invention

[0036] Accordingly, the automatic shut-off valve control system for preventing water damage according to the present invention distinguishes between fire water discharge and non-fire water flow with high reliability using a judgment logic that fuses the temporal patterns of smoke, flow rate, and pressure, thereby reducing unnecessary water discharge and decreasing water damage.

[0037] Second, malfunctions, response delays, or communication interruptions in the smoke detection unit are identified in real-time through a health check, and in the event of a lack of trust, the leak blocking logic is restricted or delayed reconfirmation is performed to suppress the risk of firefighting water supply being cut off in the event of an actual fire.

[0038] Third, it is an interlock that uses rapid pressure drop and high flow rate patterns as fire indicators, and ensures the safety of life and property by detecting a fire even in the absence of a smoke signal and maintaining the opening of the primary valve.

[0039] Fourth, by utilizing leakage signs such as low flow rate or gradual pressure changes, the primary valve is automatically shut off for non-fire flow, thereby significantly reducing flooded area, recovery costs, and the risk of business interruption.

[0040] Fifth, manual reset, authorization verification, and remote notification of the alarm system enhance on-site response speed and alarm reliability, while mitigating operational confusion caused by false alarms or non-alarms.

[0041] Sixth, the integration of remote control interfaces enables real-time integrated monitoring of valve and sensor status, judgment results, and logs, thereby enhancing the central management and preventive maintenance systems for large buildings.

[0043] Meanwhile, the effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs from the description below. Brief explanation of the drawing

[0045] The following drawings attached to this specification illustrate a preferred embodiment of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIGS. 1 to 4 are 3D drawings or conceptual diagrams for explaining the configuration of an alarm valve section of an automatic shut-off valve control system for preventing water damage according to a preferred embodiment of the present invention. FIG. 5 is a conceptual diagram illustrating the layout structure of an automatic shut-off valve control system for preventing water damage according to a preferred embodiment of the present invention. FIGS. 6 to 11 are flowcharts, flowcharts, or conceptual diagrams for explaining how an automatic shut-off valve control system for preventing water damage according to a preferred embodiment of the present invention is controlled to prevent water damage. Specific details for implementing the invention

[0046] Specific structural or functional descriptions of embodiments according to the concept of the present invention disclosed herein are provided merely for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and are not limited to the embodiments described herein.

[0047] Embodiments according to the concept of the present invention may be subject to various modifications and may take various forms; therefore, embodiments are illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes all modifications, equivalents, or substitutions that fall within the spirit and scope of the present invention.

[0048] FIGS. 1 to 4 are 3D drawings or conceptual diagrams for explaining the configuration of the alarm valve section of an automatic shut-off valve control system for preventing water damage according to a preferred embodiment of the present invention, FIG. 5 is a conceptual diagram for explaining the layout structure of an automatic shut-off valve control system for preventing water damage according to a preferred embodiment of the present invention, and FIGS. 6 to 11 are flowcharts, sequence diagrams, or conceptual diagrams for explaining the operation control of an automatic shut-off valve control system for preventing water damage according to a preferred embodiment of the present invention to prevent water damage.

[0050] An automatic shut-off valve control system for preventing water damage according to one embodiment of the present invention is configured such that an alarm valve unit (100), a smoke detection unit (200), a control unit (300), and an alarm system (400) are linked to the main pipe of a sprinkler system.

[0051] First, the alarm valve unit (100) is configured to include a first valve (110), a first pressure gauge (120), a pressure switch (130), a second pressure gauge (140), a test valve (150), a drain valve (160), a liquid level glass (170), and a flow rate sensor (180) to provide basic data for determining whether to start and maintain the supply of firefighting water and whether non-fire water flow occurs when a fire occurs.

[0052] Additionally, the smoke detection unit (200) is configured to detect smoke in the sprinkler area and provide a signal to the control unit (400), and the control unit (300) is configured to collect flow rate, pressure, and smoke information signals to determine fire or leak and to control the opening and closing of the first valve (110).

[0053] And, the alarm system (400) is configured to include a field display means and a remote notification means, so that if the judgment result of the control unit (400) is a leak, it immediately outputs a leak alarm, and if it is a fire, it outputs a fire alarm.

[0054] At this time, the control logic is configured as follows. The control unit (400) is configured to output a driving signal to close the first valve by determining it as a leak if the water flow persists for more than a predetermined time in a smoke-free state, and conversely, to output an interlock control signal to maintain the first valve in an open state by determining it as a fire if smoke is detected or if a sudden pressure drop and a pre-set high flow rate pattern are detected. Since there is a possibility of misjudgment with only a smoke signal and a risk of false detection with only a single flow rate signal, this logic fuses the temporal pattern of flow rate and pressure with the smoke signal to minimize water damage while ensuring the supply of firefighting water in the event of an actual fire. Through this configuration, non-fire water flow, such as micro-leaks, pipe pinholes, and micro-opening of valves, is quickly blocked to reduce flood damage, and the supply of firefighting water is maintained only in the case of an actual fire, thereby ensuring the safety of life and property.

[0055] Here, considering corrosion resistance and safety, the primary valve body is selected to be bronze or cast iron lined, or stainless steel if necessary, and the seal is composed of EPDM or NBR. The pressure gauge is selected to adopt a stainless steel housing and a glycerin-filled structure to provide stable indication in a vibrating environment, the flow sensor is suitable as a flow switch or electronic flow meter with a brass or stainless steel housing, and the liquid level glass is composed of tempered glass or impact-resistant polycarbonate.

[0056] Here, the smoke detection unit (200) is configured to include a first smoke detector (210) and a second smoke detector (220) having different detection principles. This configuration is designed to reduce the risk of non-detection due to contamination or malfunction of a single detector. The control unit is configured such that when a malfunction or communication interruption is detected in the smoke detection unit, it does not trust the non-detection smoke state as is, but switches to a state of distrust, thereby deactivating the leak judgment logic or performing a delayed reconfirmation procedure. This judgment logic configuration eliminates the risk of firefighting water supply being cut off in the event of an actual fire if a leak is determined based solely on the flow rate signal while the reliability of smoke detection is reduced. Through this configuration, the sprinkler's inherent system for fire safety prevention operates first even in situations where smoke reliability is reduced, thereby preventing secondary damage caused by the cutoff of firefighting water. At this time, it is preferable that the housing of each detector be made of flame-retardant grade ABS / PC or metal, and is configured with a dustproof or waterproof grade suitable for an indoor ceiling environment.

[0057] Meanwhile, the first valve (110) is preferably configured as a solenoid-driven non-powered closing type (NC) to automatically close in the event of a power outage, and an override handle for manual operation at the site is configured. The control unit (400) is configured to apply a predetermined duration to water flow detection to eliminate misjudgment caused by short-term noise or instantaneous waveforms, and is configured to increase the reliability of fire judgment when the differential pressure change exceeds a critical threshold by referencing differential pressure information from the first and second pressure gauges and the state of the pressure switch as auxiliary signals.

[0058] In addition, when a test input indicating that the test valve (150) is open is applied, the control unit (400) is configured to bypass the leak detection logic for a predetermined time and operate to return to its original state after the timeout ends. This configuration is designed to suppress malfunctions in abnormal or test conditions, such as power outages, inspections, and commissioning, and to contribute to achieving the original function of maintaining the supply of firefighting water in the event of an actual fire. Here, the material or insulation grade of the valve and coil may be changed to suit the installation environment, and the test valve is configured to have a locking structure to prevent erroneous operation.

[0059] Meanwhile, the control unit (300) is configured to include a smoke detection unit soundness inspection module (310), a flow rate pressure-based fire determination module (320), and a time pattern determination module (330).

[0060] At this time, the smoke detection unit integrity inspection module (310) is configured to determine an open circuit, short circuit, or deviation from the allowable range as a fault by monitoring the termination resistance of the detector line and checking the loop current or voltage range, and for addressable detectors, to determine a communication disconnection or response delay based on periodic polling, heartbeat response time measurement, accumulation of CRC errors, or sequence discontinuity. In addition, it is configured to determine the contamination level of the detector itself, the self-diagnosis code, or the absence of a remote self-test response as signs of a fault, and if at least one of these is detected, the smoke non-detection state is determined as a smoke detection failure state, and even if water flow is detected in this state, it operates to prohibit the closure of the first valve or to perform a delayed reconfirmation procedure first. Such integrity-based processing logic is configured to prevent the risk of water leakage in case of actual fire caused by relying on the smoke OFF signal.

[0061] Additionally, the flow rate pressure-based fire detection module (320) is configured to determine that it is a fire when the pressure drop rate measured by the second pressure gauge exceeds a standard and the flow rate detected by the flow rate sensor simultaneously exceeds a high flow rate threshold, even if there is no smoke detection signal. It is configured to output an interlock control signal to keep the first valve open or to forcibly open it, thereby enabling the detection of a fire even in the absence of a smoke signal by utilizing the combined information of rapid changes and high flow rates observed in actual fire water supply initiation situations, such as the opening of a sprinkler head.

[0062] And, the time pattern determination module (330) calculates the rate of increase in flow rate and the rate of decrease in pressure based on the time series data of the flow rate detection sensor and the first and second pressure gauges, and determines it as a fire pattern if the state in which the flow rate exceeds a high threshold continues and the rate of decrease in pressure is also fast continues for a certain period of time or longer. Conversely, if the flow rate is below a low threshold and the rate of decrease in pressure is maintained within an allowable range for a certain period of time or longer, it determines it as a leakage pattern. Such time pattern-based classification is effective in boundary cases where it is difficult to distinguish using only absolute value thresholds, and has the effect of reducing false positives and false negatives. This function is executed on a microcontroller or embedded processor on the control board, and signal preprocessing including noise filtering and debouncing can be performed in parallel.

[0063] Meanwhile, the control unit (300) is configured to transmit control information, including at least one of the first valve status, flow rate, pressure, smoke signal, judgment result, and event log, to the alarm system (400) and the building management system through the remote control interface (500). It also includes a simulation test mode that checks the entire process of determining, sending alarms, and remotely notifying by injecting virtual flow rate and pressure events without opening the test valve, and the logs generated in the test mode are configured to be stored separately from the operation log and a distinguishing flag. Through this configuration, the safety of commissioning and periodic inspection is enhanced, and maintenance efficiency is improved by facilitating monitoring, tracking, and fault analysis during the operation phase. The remote interface can be implemented via wired or wireless means, and it is desirable to provide timestamps, reason codes, hashes, or signature information together to ensure data integrity.

[0064] Meanwhile, the smoke detection unit (200) may include a plurality of smoke detectors having different detection principles, and the control unit (300) may be configured to calculate fire judgment candidates using a weighted majority rule that assigns weights according to the soundness of each detector.

[0065] Additionally, the control unit (300) may be configured to calculate an indicator for detecting a stepwise increase in flow rate from a flow rate time series, and to maintain the first valve (110) in an open state by estimating that a stepwise increase of more than a threshold number is detected within a predetermined time.

[0066] And, the control unit (300) is configured to keep the first valve (110) open in an ambiguous state where the flow rate, pressure, and smoke signals conflict or the judgment reliability is below a threshold, and to resume the leak judgment logic only after the ambiguous state is resolved.

[0068] The present invention has been described above through a preferred embodiment. However, the above-described embodiment is merely an illustrative explanation of the technical concept of the present invention, and it will be understood by those skilled in the art that various changes are possible within the scope of the technical concept of the present invention. Accordingly, the scope of protection of the present invention should be interpreted not by specific embodiments but by the matters described in the patent claims, and all technical concepts within the corresponding scope should also be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0070] 100 : Alarm valve section 110 : Primary valve (Primary valve) 120: Primary pressure gauge 130 : Pressure switch (PS) 140 : Secondary pressure gauge 150 : Test valve (test valve) 160 : Drain valve (drain valve) 170 : Face Value Glass 180 : Flow detection sensor (flow switch / flow meter) 200 : Smoke detector 210: First smoke detector (one of different detection principles) 220 : Second smoke detector (one of different detection principles) 300 : Control unit (controller) 310 : Smoke detection unit integrity inspection module 320 : Flow-Pressure Based Fire Detection Module 330 : Time Pattern Funding Module 400 : Alarm system (including on-site display and remote notification) 500 : Remote Monitoring Interface (BMS / Monitoring Integration)

Claims

Claim 1 An alarm valve unit (100) equipped with a first valve (110) installed in the primary side piping and a first pressure gauge (120) for measuring the primary side pressure, a pressure switch (130) positioned inside or outside the casing and a second pressure gauge (140) for measuring the second side pressure, a test valve (150) and a drain valve (160) for applying a test flow rate, a liquid level glass (170) for visually checking the water level inside the piping, and a flow rate detection sensor (180) for detecting the occurrence of water flow; a smoke detection unit (200) equipped to detect smoke in the sprinkler area and generate a smoke detection signal; and a control unit (300) equipped to collect signals from the flow rate detection sensor (180), the first pressure gauge (120), the second pressure gauge (140), the pressure switch (130), and the smoke detection unit (200). An alarm system (400) including a field display means and a remote notification means, configured to generate a leak alarm when the control unit (300) determines that there is a leak;The control unit (300) is configured to determine a leak state when water flow detection persists for a predetermined time in a smoke non-detection state and output a closing drive signal to the first valve (110), and to determine a fire state when smoke detection or a rapid pressure drop and a preset high flow rate pattern are detected and output an interlock control signal to maintain the first valve (110) in an open state; the smoke detection unit (200) includes a first smoke detector (210) and a second smoke detector (220) having a plurality of different detection principles in a sprinkler area; and the control unit (300) is configured to set the smoke non-detection state to a non-trust state and deactivate the leak determination logic or perform a delayed reconfirmation procedure when a malfunction or communication disconnection state of the smoke detection unit (200) is detected, wherein the first valve (110) is a solenoid-driven non-power closed type (NC). An automatic shut-off valve control system for preventing water damage, characterized in that it is configured to automatically close in the event of a power outage and is equipped with an override handle for manual operation at the site, and the control unit (300) is configured to process a leak determination as valid after applying a predetermined water flow duration to water flow detection, and is configured to increase the reliability of a fire determination when the differential pressure changes above a predetermined threshold value by referring to differential pressure information from the first pressure gauge (120) and the second pressure gauge (140) and the state of the pressure switch (130) as auxiliary determination signals, and when a test input indicating that the test valve (150) is open is applied, the control unit (300) is configured to bypass the leak determination logic for a predetermined time and automatically return to its original state when the timeout ends. Claim 2 delete Claim 3 delete Claim 4 In claim 1, the control unit (300) includes a smoke detection unit integrity inspection module (310), a flow rate / pressure-based fire determination module (320), and a time pattern determination module (330). The smoke detection unit integrity inspection module (310) is configured to monitor the integrity of the smoke detection unit (200) by monitoring the termination resistance of the detector line and inspecting the loop current or voltage allowable range to determine an open circuit, short circuit, or deviation from the allowable range as a fault. It is configured to perform periodic polling and heartbeat response time measurement for the addressable detector to determine a timeout exceeded, CRC error accumulation, or sequence discontinuity as a communication disconnection or response delay. It is also configured to determine the absence of contamination, self-diagnosis code, or remote self-test response provided by the detector itself as a fault indication. If at least one of a fault, response delay, or communication disconnection is detected, the smoke non-detection state is determined as a smoke detection fault state. Even if water flow detection occurs in this state, the first The valve (110) is provided to prohibit closure or to perform a delayed reconfirmation procedure. The flow rate pressure-based fire determination module (320) is provided to determine a fire state when, even in the absence of a smoke detection signal, the pressure drop rate measured by the second pressure gauge (140) exceeds a preset reference pressure drop rate and the flow rate detected by the flow rate detection sensor (180) exceeds a preset high flow rate threshold, and to output an interlock control signal to maintain the first valve (110) in an open state or to forcibly open it. The time pattern determination module (330) calculates how quickly the flow rate increases and how quickly the pressure drops based on values ​​obtained from the flow rate detection sensor (180) and the first and second pressure gauges (120, 140) over time. If the state in which the flow rate exceeds a preset high standard continues and the state in which the pressure drop rate is faster than a preset standard continues for a certain period of time or longer, this is determined as a fire pattern.An automatic shut-off valve control system for preventing water damage, characterized by being configured to determine a leakage pattern if a state in which the flow rate remains below a predetermined low standard and the pressure drop rate also remains within an allowable range continues for a certain period of time or longer. Claim 5 In claim 4, the control unit (300) is configured to transmit control information including at least one of the first valve (110) status, flow rate, pressure, smoke signal, judgment result, and event log to the alarm system (400) and the building management system through a remote control interface (500); a simulation test mode is provided to perform a loopback test of judgment, alarm, and remote notification by injecting virtual flow rate and virtual pressure events without opening the test valve (150); and the log generated in the test mode is configured to be stored separately from the operation log and a distinguishing flag, characterized in that it is an automatic shut-off valve control system for preventing water damage.

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