CN118987551B - Fire emergency water supply control system and method thereof - Google Patents
Fire emergency water supply control system and method thereof Download PDFInfo
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Abstract
本发明公开了一种消防应急供水控制系统及其方法，涉及消防技术领域，包括分布式控制网络，用于与多个火灾探测设备及多个供水设备建立通信连接，接收并处理来自各类火灾探测设备的火灾相关参数，以及控制供水设备的运行；多个火灾探测设备，用于持续采集火灾相关参数；多个供水设备，包括消防阀门和消防水泵；备用电源模块，用于在主电源故障时为系统供电；远程监控和控制模块，用于与消防指挥中心进行数据交换和接收控制指令。本发明通过多源信息融合和动态分析，实现了对火灾情况的精确判断和实时跟踪，大幅提高了系统响应的准确性和及时性。
The present invention discloses a fire emergency water supply control system and method thereof, which relates to the field of fire technology, including a distributed control network for establishing communication connections with multiple fire detection devices and multiple water supply devices, receiving and processing fire-related parameters from various fire detection devices, and controlling the operation of water supply devices; multiple fire detection devices for continuously collecting fire-related parameters; multiple water supply devices, including fire valves and fire pumps; a backup power supply module for powering the system when the main power fails; a remote monitoring and control module for exchanging data with a fire command center and receiving control instructions. The present invention realizes accurate judgment and real-time tracking of fire conditions through multi-source information fusion and dynamic analysis, greatly improving the accuracy and timeliness of system response.
Description
Technical Field
The invention relates to the technical field of fire control, in particular to a fire emergency water supply control system and a fire emergency water supply control method.
Background
Traditional fire-fighting water supply systems generally adopt a fixed water supply scheme, and are difficult to flexibly adjust according to the specific conditions of fire. Such systems often fail to efficiently allocate water resources in the face of complex and diverse fire scenarios. For example, in a high-rise building fire, a fixed water supply pressure may cause problems with excessive low floor water pressure and insufficient high floor water pressure. Meanwhile, the traditional system mainly relies on single detection equipment such as a smoke detector or a temperature detector to judge fire, so that false alarm or missing alarm is easily caused, and rescue efficiency is affected.
In recent years, with the development of the internet of things technology, some intelligent fire-fighting water supply systems start to appear. These systems, while capable of monitoring fire conditions in real time, are still deficient in the formulation and implementation of water supply strategies. For example, although some systems can adjust the water supply pressure, they fail to adequately consider factors such as the trend of fire, the characteristics of building structures, and available water resources, resulting in inefficient water supply.
Disclosure of Invention
The invention is provided in view of the lack of accurate judgment and dynamic adjustment capability of the existing fire water supply system in the face of complex and changeable fire scenes and the shortages in water supply strategy formulation and execution.
Therefore, the invention aims to solve the problems of realizing accurate fire judgment based on multi-source information, dynamically optimizing a water supply strategy according to the fire judgment, realizing intelligent control and reliable operation of a fire-fighting water supply system, and providing the following technical scheme:
In a first aspect, embodiments of the present invention provide a fire emergency water supply control system, comprising a distributed control network for establishing communication with a plurality of fire detection devices and a plurality of water supply devices, receiving and processing fire related parameters from the plurality of fire detection devices and controlling the operation of the water supply devices, a plurality of fire detection devices for continuously collecting fire related parameters, a plurality of water supply devices including fire valves and fire pumps, a standby power module for supplying power to the system when a main power fails, a remote monitoring and control module for performing data exchange with a fire command center and receiving control instructions, wherein the distributed control network is further configured to determine a fire occurrence position and a fire level based on the fire related parameters when the fire related parameters meet preset fire judgment conditions, acquire current available water supply resource information, calculate a target amount and a target water supply pressure based on the fire occurrence position, the fire level and the available water supply resource information, and determine an optimal water supply path based on water supply topology information, control the distributed control network controls the related water supply devices to turn on the fire valves according to a predetermined sequence, start and adjust the fire pumps, gradually adjust the target amount and the actual water supply pressure until the target amount and the target water supply pressure reach a corresponding monitoring and emergency water supply network monitoring condition when the corresponding monitoring conditions are detected and the emergency water supply network is abnormal, and the emergency water supply network is continuously adjusted to a corresponding monitoring condition, triggering alarm signal and sending notice, when fire related parameter continuously meets preset fire termination condition and duration time reaches set threshold value, the distributed control network gradually reduces water supply pressure according to preset program, and according to preset sequence, stopping related water supply equipment, executing system self-checking program and generating water supply event report.
As a preferable scheme of the fire emergency water supply control system, fire detection equipment comprises a fire alarm button, an image recognition system and various environmental parameter sensors, fire related parameters comprise fire alarm button states, detection results of the image recognition system, environmental parameter data, the environmental parameter data comprise smoke concentration, temperature, carbon monoxide concentration, infrared radiation intensity and ultraviolet radiation intensity, preset fire judgment conditions comprise one or more of the following conditions that any fire alarm button is activated, the image recognition system detects open fire or thick smoke, the smoke concentration exceeds a first preset threshold value, the temperature rising rate exceeds a second preset threshold value, the carbon monoxide concentration exceeds a third preset threshold value, the infrared radiation intensity exceeds a fourth preset threshold value and the ultraviolet radiation intensity exceeds a fifth preset threshold value.
As a preferable scheme of the fire emergency water supply control system, the fire emergency water supply control system comprises the following steps of receiving and processing fire related parameters from a plurality of fire detection devices; determining a fire occurrence position, which is specifically characterized in that when an activation signal of a fire alarm button is received, the installation position of the fire alarm button is determined to be an initial fire occurrence position, when an open fire or a dense smoke is detected by an image recognition system, the coverage area of a camera which detects abnormality is determined to be the initial fire occurrence position, when environmental parameter data are abnormal, the installation position of an abnormal parameter sensor is determined to be the initial fire occurrence position, position information of a plurality of abnormal signal sources is comprehensively analyzed, the final fire occurrence position is determined through a preset position interpolation algorithm, fire levels are determined, which is specifically characterized in that the number of parameters meeting preset fire judgment conditions is counted, each parameter meeting the preset fire judgment conditions is weighted to obtain an initial fire level score, the initial fire level score is dynamically adjusted according to the change rate of fire related parameters, the adjusted fire level score is compared with preset grading standards to determine the final fire level, update data of fire related parameters are received and processed in real time, the steps of determining the fire occurrence position and the fire level are periodically repeated according to the update data, when any water supply recalculation condition is met, recalculation of the water supply strategy is triggered, the recalculation optimization is performed, the recalculation of the water supply strategy is performed, and the water supply strategy is calculated, and the water supply position change coordinate is calculated to exceed the preset fire level change threshold value change level change threshold, and the fire level change level exceeds the change threshold The rate of change of the fire related parameter exceeds a preset rate threshold.
As a preferable mode of the fire emergency water supply control system of the present invention, wherein calculating the target water supply amount and the target water supply pressure includes determining a distance from a fire point to a nearest water supply point based on a fire occurrence positionAcquiring basic water supply amount from a preset fire level-basic water supply demand correspondence table according to the fire levelAnd base water supply pressureCalculating the target water supply amountThe specific formula is as follows:,
Wherein, As the distance-influencing factor,To adjust the coefficients for the available water supply resources,And D is the distance from the fire point to the nearest water supply point for the basic water supply amount.
The target water supply pressure P is calculated as follows: wherein, the method comprises the steps of, wherein, The density of water, g is gravity acceleration, H is the height difference from a water supply point to a fire disaster point, k is the pipe network resistance coefficient,Is used for providing water pressure for the basis,Water supply amount is targeted. Determining a distance influence coefficient according to the available water supply resource informationAnd available water supply resource adjustment coefficient。
When the calculated target water supply amountAnd the target water supply pressure P is out of the system capacity range, ifExceeding the maximum water supply amountSetting the maximum water supply amount of the system and correspondingly adjusting P, setting the maximum water supply pressure of the system as P if P exceeds the maximum water supply pressure, and correspondingly adjustingAnd then calculateAnd P as a target water supply amount and a target water supply pressure.
The fire emergency water supply control system comprises the following steps of extracting pipe network node information and pipe section information from pre-stored water supply pipe network topological structure information, primarily screening the latest N available water supply points based on fire occurrence positions, calculating all possible paths from a water supply point to a fire point by using an improved Dijkstra algorithm for each available water supply point, grading each possible path, selecting an optimal path of each water supply point according to the grading, comparing the optimal paths of all water supply points, selecting a path with the highest comprehensive grading as a candidate optimal water supply path, checking whether the candidate optimal water supply path meets the requirements of target water supply quantity and target water supply pressure, if the requirements are met, confirming that the path is the final optimal water supply path, if the requirements are not met, selecting a suboptimal path, repeating the path verification process until the optimal water supply path meeting the requirements or all possible paths are found, if a single path cannot meet the requirements, considering the multipath water supply scheme, selecting the optimal path combination of the highest multipath water supply points, calculating the total water supply quantity and the total water supply pressure of the multipath water supply point, and confirming that the optimal water supply path meets the optimal water supply quantity and the target water supply pressure.
The fire emergency water supply control system comprises a distributed control network, a fire control water supply device control system, a fire control water supply system, a control system and a closed loop control process, wherein the distributed control network is used for gradually adjusting actual water supply pressure and flow until the actual water supply pressure and the target water supply quantity reach the target water supply pressure and the target water supply quantity, the distributed control network is used for receiving an optimal water supply path, generating a water supply device control command sequence according to the determined optimal water supply path, executing water supply device control through the distributed control network, sending an opening command to a relevant fire control valve, receiving and confirming opening state feedback of the fire control valve, sending a starting command to a designated fire control water pump, receiving and confirming starting state feedback of the fire control water pump, starting a real-time monitoring system, collecting actual water supply pressure and flow data in a pipe network, performing a closed loop control process, calculating an adjusting parameter according to the collected actual water supply pressure and flow data and the target water supply pressure and the target water supply quantity, adjusting parameter, adjusting the water pump speed or the water outlet pressure, and waiting for a preset time interval, executing a closed loop control process again until the terminating condition is met, a terminating condition judging mechanism is set, the terminating condition is comprised of the actual water supply pressure and the flow reaches the target water supply requirement or the preset maximum value, if the current control parameter reaches the preset maximum value, and the current control parameter is recorded and the preset maximum value is not reached, and the abnormal water supply condition is triggered if the abnormal condition is reached.
The fire emergency water supply control system comprises a fire water pump output parameter is automatically adjusted and increased and decreased through a frequency conversion technology if the system detects that the water supply pressure or flow deviates from a target value, a standby fire water pump is started and simultaneously a multi-point water supply pressure distribution scheme is calculated and implemented by utilizing a real-time optimization algorithm if single water pump adjustment cannot meet the requirement, a standby water supply path is automatically started if the system detects that continuous N times of sampling data show that the pressure or flow continuously drops or the pressure of any critical node is reduced below a preset multiple of the minimum allowable working pressure, a multi-pump parallel operation scheme is adjusted, an optimal water supply path is recalculated and implemented, a standby water source is activated if the system detects that the water level of a fire water pool drops below a preset alarm line or the available water supply resource ratio is lower than a preset resource threshold value, a partition current limiting measure is implemented, water supply is preferentially ensured in a critical area, an additional water source support request is sent to a superior fire command center, the system is automatically switched to standby equipment when the system detects equipment faults, the system simultaneously starts up a rapid maintenance scheme, the pre-arranged topology is automatically adjusted to bypass the system, the emergency water supply network is enabled to bypass the fault protection network is identified and the emergency water supply system is enabled when the fault protection network is broken, and the system is enabled, and the fault protection network is enabled.
The embodiment of the invention provides a fire emergency water supply control method, which comprises the steps of starting a distributed control network, establishing communication connection between the distributed control network and a plurality of fire detection devices and a plurality of water supply devices, continuously collecting fire related parameters by the plurality of fire detection devices, determining fire occurrence positions and fire grades based on the fire related parameters when the fire related parameters meet preset fire judgment conditions, acquiring current available water supply resource information, calculating target water supply quantity and target water supply pressure according to the fire occurrence positions, the fire grades and the available water supply resource information, determining an optimal water supply path based on prestored water supply network topological structure information, controlling related water supply devices according to the optimal water supply path, starting fire valves according to a preset sequence, starting and adjusting fire water pumps, gradually adjusting actual water supply pressure and flow until the target water supply pressure and the target water supply quantity are achieved, continuously monitoring the state parameters of the water supply network and the fire related parameters, adjusting the fire water supply pump output parameters or enabling a standby water supply path according to a preset emergency strategy when abnormal conditions are detected, calculating and optimizing a multipoint water supply pressure distribution scheme, continuously meeting preset emergency conditions, continuously stopping the fire related parameters and continuously meeting preset fire emergency conditions, continuously setting the preset water supply network, continuously controlling the water supply network according to preset water supply event report time, continuously, and gradually stopping the preset water supply system, and gradually stopping the water supply network according to a preset program, and continuously setting the preset water supply network, and continuously controlling the water supply device according to a preset program, and stopping the water supply network.
The method has the beneficial effects that through multi-source information fusion and dynamic analysis, the accurate judgment and real-time tracking of fire conditions are realized, and the accuracy and timeliness of system response are greatly improved. Based on the fire position, the grade, available water resources and other factors, the optimal water supply strategy is dynamically calculated, and the water supply efficiency and the resource utilization rate are remarkably improved. By adopting an improved path optimization algorithm and a closed-loop control mechanism, the accurate control of water supply pressure and flow is ensured, and the problems of unbalanced water supply and the like of high-rise buildings are effectively solved. And a multi-level abnormality detection and emergency treatment mechanism is introduced, so that the reliability and the fault self-healing capacity of the system are greatly enhanced, and the risks of equipment faults, pipe network damage and the like are effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings required to be used in the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a frame connection diagram of a fire emergency water supply control system.
FIG. 2 is a flow chart of a fire location and fire level of a fire emergency water supply control system.
FIG. 3 is a flow chart of the optimal path for the fire emergency water supply control system.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Embodiment 1, referring to fig. 1-3, is a first embodiment of the present invention, which provides a fire emergency water supply control system, comprising,
FIG. 1 is a frame connection diagram of a fire emergency water supply control system, specifically as follows:
A distributed control network for establishing communication connection with the plurality of fire detection devices and the plurality of water supply devices,
And receiving and processing fire related parameters from various fire detection devices and controlling the operation of the water supply device.
And the plurality of fire detection devices are used for continuously acquiring fire related parameters.
The plurality of water supply devices comprise a fire valve and a fire pump.
And the standby power supply module is used for supplying power to the system when the main power supply fails.
And the remote monitoring and control module is used for carrying out data exchange with the fire control command center and receiving control instructions.
The fire detection device comprises a fire alarm button, an image recognition system and various environmental parameter sensors, wherein fire related parameters comprise a fire alarm button state, an image recognition system detection result and environmental parameter data, the environmental parameter data comprise smoke concentration, temperature, carbon monoxide concentration, infrared radiation intensity and ultraviolet radiation intensity, preset fire judgment conditions comprise one or more of the following steps that any fire alarm button is activated, the image recognition system detects open fire or thick smoke, the smoke concentration exceeds a first preset threshold value, the temperature rising rate exceeds a second preset threshold value, the carbon monoxide concentration exceeds a third preset threshold value, the infrared radiation intensity exceeds a fourth preset threshold value, the ultraviolet radiation intensity exceeds a fifth preset threshold value, and when any preset fire judgment condition is met, a fire alarm is triggered and a fire response flow is executed. The first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold and the fifth preset threshold refer to a smoke concentration threshold, a temperature rising rate threshold, a carbon monoxide concentration threshold, an infrared radiation intensity threshold and an ultraviolet radiation intensity threshold respectively.
Further, when the fire related parameters simultaneously meet at least two preset fire judgment conditions and the duration exceeds a preset time threshold, the distributed control network determines a fire occurrence position and a fire grade based on the fire related parameters, acquires current available water supply resource information, calculates target water supply amount and target water supply pressure according to the fire occurrence position, the fire grade and the available water supply resource information, and determines an optimal water supply path based on the water supply network topology structure information.
Specifically, a flow chart for determining a fire occurrence position and a fire level based on fire related parameters is shown in fig. 2, and comprises the steps of receiving and processing fire related parameters from a plurality of fire detection devices, determining the fire occurrence position, if only a single preset fire judgment condition is met, determining the installation position of a fire alarm button as an initial fire occurrence position when an activation signal of the fire alarm button is received, determining the coverage area of a camera with the detected abnormality as the initial fire occurrence position when an image recognition system detects open fire or dense smoke, determining the installation position of an abnormal parameter sensor as the initial fire occurrence position when environmental parameter data are abnormal, comprehensively analyzing the position information of a plurality of abnormal signal sources, determining the final fire occurrence position through a preset position interpolation algorithm, determining the fire level, counting the number of parameters meeting the preset fire judgment condition, dynamically adjusting the initial fire level score according to the change rate of the fire related parameters, comparing the adjusted fire level score with the preset fire level score, updating the final fire level calculation strategy and the water supply level, and updating the dynamic fire level calculation strategy when the fire level adjustment strategy is met, and the water supply level adjustment strategy is updated.
It should be noted that the water supply strategy recalculation conditions include that the coordinate change of the fire occurrence position exceeds the preset distance threshold, that the fire level change exceeds the preset level change threshold, and that the change rate of the fire related parameter exceeds the preset rate threshold. The anomaly signal source refers to a plurality of initial fire occurrence locations determined.
Further, calculating the target water supply amount and the target water supply pressure includes the steps of determining a distance D from a fire spot to a nearest water supply spot based on a location of occurrence of the fire, and acquiring a base water supply amount from a preset fire level-base water supply demand correspondence table according to a fire levelAnd base water supply pressureCalculating the target water supply amountThe specific formula is as follows:,
Wherein, As the distance-influencing factor,To adjust the coefficients for the available water supply resources,And D is the distance from the fire point to the nearest water supply point for the basic water supply amount.
Further, the target water supply pressure P is calculated as follows:,
Wherein, The density of water, g is gravity acceleration, H is the height difference from a water supply point to a fire disaster point, k is the pipe network resistance coefficient,Is used for providing water pressure for the basis,Water supply amount is targeted.
Further, according to the available water supply resource information, determining a distance influence coefficientAnd available water supply resource adjustment coefficientComprising the steps of calculating a ratio of available water supply resources
Wherein G is the current available water supply and G max is the maximum water supply of the system whenAnd when the available water supply resource is considered to be sufficient,AndThe maximum value is taken to be the highest value,
When (1)When the available water supply resource is considered to be seriously insufficient,AndTaking the minimum value:;
When (when) When calculating by the following formulaAnd,,,
Wherein, The method is characterized in that the method is a preset system parameter, and the following steps are satisfied:,。
Further, when calculated And P is out of the system capacity range, making the following adjustments ifExceeding the maximum water supply amountSetting the maximum water supply amount of the system and correspondingly adjusting P, setting the maximum water supply pressure of the system as P if P exceeds the maximum water supply pressure, and correspondingly adjustingAnd then calculateAnd P is used as a target water supply amount and a target water supply pressure for subsequent water supply control.
Further, a flow chart for determining an optimal water supply path based on the water supply network topology structure information is shown in fig. 3, and the flow chart comprises the following steps of extracting network node information and pipe section information from the pre-stored water supply network topology structure information, wherein the node information comprises position coordinates and types (such as water supply points, medium-temperature points and water consumption points) of each node, and the pipe section information comprises connection nodes, pipe diameters, pipe lengths, pipe materials and maximum allowable flow; based on the fire occurrence position, initially screening the nearest N available water supply points, calculating all possible paths from the water supply point to the fire point by using an improved Dijkstra algorithm for each available water supply point, grading each possible path, wherein grading factors comprise total path length, total pressure loss (calculated according to pipe diameter, pipe length and expected flow rate) on the path, minimum pipe diameter on the path and turning times on the path, selecting an optimal path of each water supply point according to grading, comparing the optimal paths of all water supply points, selecting the path with the highest comprehensive grading as a candidate optimal water supply path, checking whether the candidate optimal water supply path meets the requirements of target water supply amount and target water supply pressure, confirming that the path is the final optimal water supply path if the requirements are met, selecting the suboptimal path if the requirements are not met, repeating the path verification process until the optimal water supply path meeting the requirements is found or all possible paths are traversed, considering the water supply scheme with the highest grading, calculating the total quantity and the final water supply pressure of the multipath combination, if the multipath combination meets the requirements, confirming the optimal water supply path is the optimal water supply path, and is used for subsequent water supply control.
The distributed control network controls related water supply equipment according to the optimal water supply path, opens a fire valve according to a preset sequence, starts and adjusts a fire pump, and gradually adjusts the actual water supply pressure and flow until the target water supply pressure and the target water supply quantity are reached.
The distributed control network receives an optimal water supply path, generates a water supply equipment control instruction sequence according to the determined optimal water supply path, performs water supply equipment control through the distributed control network, sends an opening instruction to a related fire valve, receives and confirms opening state feedback of the fire valve, sends a starting instruction to a designated fire pump, receives and confirms starting state feedback of the fire pump, starts a real-time monitoring system, collects actual water supply pressure and flow data in a pipe network, performs a closed loop control process, compares the collected actual water supply pressure and flow data with target water supply pressure and target water supply quantity, calculates adjustment parameters according to the comparison result, sends an adjustment instruction to the fire pump, adjusts the water pump rotating speed or water outlet pressure, and re-performs the closed loop control process after waiting for a preset time interval until termination conditions are met, sets a termination condition judgment mechanism comprising that the actual water supply pressure and flow reach target water supply requirements (target water supply pressure and target water supply quantity) or the adjustment times reach preset maximum values, records and keeps the current control parameters if the target water supply requirements are reached, and the abnormal treatment process is triggered if the target water supply requirements and the adjustment times reach the preset maximum values.
The distributed control network continuously monitors the state parameters and fire related parameters of the water supply network, when the abnormal condition of the water supply system is detected, executes corresponding preset emergency strategies according to the type of the detected abnormal condition, monitors the emergency measure effect and carries out active adjustment, and meanwhile, triggers an alarm signal and sends a notification.
The abnormal conditions include deviation of the water supply pressure or the flow rate from a target value, specifically, deviation of the actual water supply pressure from the target water supply pressure by more than a preset pressure deviation threshold, and deviation of the actual water supply flow rate from the target water supply amount by more than a preset flow rate deviation threshold, wherein the preset pressure deviation threshold is + -10%, and the preset flow rate deviation threshold is + -15%. The continuous deterioration of the water supply parameter specifically comprises continuous N times of sampling data to display continuous descending trend of pressure or flow, wherein N is a preset sampling frequency threshold value, the pressure of any key node is reduced to be lower than a preset multiple of the minimum allowable working pressure, wherein N is preferably 5, and the preset multiple is preferably 1.1. The water supply resource is insufficient, and particularly comprises that the water level of the fire-fighting water tank is reduced below a preset alarm line, the ratio of available water supply resources is lower than a preset resource threshold, and the preset resource threshold is 30%. The equipment failure specifically comprises that the fire-fighting water pump fails or the performance of the fire-fighting water pump is reduced to exceed a preset performance reduction threshold, and the key fire-fighting valve cannot complete opening or closing actions within a preset time. The pipe network damage comprises the steps of detecting that the pressure of the pipe network is reduced to exceed a preset pressure reduction threshold value within preset time, suspected pipe breakage, and displaying that the flow exceeds a preset abnormal flow threshold value by the flowmeter, wherein pipe network leakage possibly exists.
The method comprises the following steps of automatically adjusting output parameters of the fire pump if the system detects that the water supply pressure or flow deviates from a target value, increasing and decreasing the rotation speed of the fire pump through a frequency conversion technology, starting the standby fire pump if the adjustment of a single water pump cannot meet the requirement, and simultaneously calculating and implementing a multi-point water supply pressure distribution scheme by utilizing a real-time optimization algorithm. If the system detects that the continuous N times of sampling data show that the pressure or the flow rate continuously decreases, or the pressure of any key node is reduced to be lower than the preset multiple of the minimum allowable working pressure, a standby water supply path is automatically started, a multi-pump parallel operation scheme is adjusted, and the optimal water supply path is recalculated and executed. If the system detects that the water level of the fire-fighting pool falls below a preset alarm line or the ratio of available water supply resources is lower than a preset resource threshold, a standby water source (such as underground water, a fire truck and the like) is activated, a partition flow limiting measure is implemented, water supply in a key area is preferentially ensured, and an additional water source support request is sent to a superior fire command center. If the system identifies the damage of the outlet pipe network, the system automatically closes the pipe section valve which may have the fault, starts the loop of the standby pipe network, and dispatches the mobile emergency equipment (such as a mobile water pump) to the affected area.
When the fire related parameters continuously meet the preset fire termination condition and the duration reaches the set threshold, the distributed control network gradually reduces the water supply pressure according to the preset program, stops related water supply equipment according to the preset sequence, executes the system self-checking program and generates a water supply event report.
It should be noted that the preset fire termination conditions include, but are not limited to, one or more of a smoke concentration decreasing below a preset safety threshold, an ambient temperature decreasing within a preset normal temperature range, a carbon monoxide concentration decreasing below a preset safety level, an infrared radiation intensity decreasing to a preset background level, an ultraviolet radiation intensity decreasing to a preset background level, an open fire or a dense smoke not being detected by the image recognition system a plurality of times in succession, and all fire alarm buttons being in an inactive state.
The method comprises the steps of acquiring and analyzing fire related parameters in real time, comparing the acquired parameters with a preset safety threshold, recording duration time of the parameters meeting the safety conditions, and judging that the fire termination conditions are met when all monitoring parameters continuously meet the safety conditions and the duration time exceeds the preset time threshold.
And the standby power supply module is used for supplying power to the system when the main power supply fails.
Specifically, the state of the main power supply is continuously monitored, when the main power supply fault is detected, the main power supply is automatically switched to the standby power supply in a preset extremely short time (usually less than 20 milliseconds), and self-checking and maintenance are regularly carried out, so that normal work at any time is ensured. The standby power supply has enough power supply capability, can support the operation of key equipment of the whole fire protection system for at least 2 hours, is integrated with the main system, and can report the state of the standby power supply in real time, including the residual electric quantity, the operation time and the like.
And the remote monitoring and control module is used for carrying out data exchange with the fire control command center and receiving control instructions. Specifically, a secure encryption communication link with the fire command center is established, so that the safety and reliability of data transmission are ensured. And uploading system state data in real time, including fire detection data, water supply system state, equipment operation parameters and the like. Control instructions from the fire command center are received, such as manually triggering alarms, adjusting water supply strategies, activating specific equipment, etc. A remote access interface is provided that allows authorized personnel to view system status and operational history through a secure connection. The system has the functions of data caching and disconnection reconnection, and ensures the data integrity when communication is interrupted. The video monitoring integration is supported, and the field video picture can be transmitted to the command center.
Further, the embodiment also provides a fire emergency water supply control method, which comprises the steps of starting a distributed control network, establishing communication connection between the distributed control network and a plurality of fire detection devices and a plurality of water supply devices, continuously collecting fire related parameters by the aid of the plurality of fire detection devices, determining fire occurrence positions and fire grades based on the fire related parameters when the fire related parameters meet preset fire judgment conditions, acquiring current available water supply resource information, calculating target water supply quantity and target water supply pressure according to the fire occurrence positions, the fire grades and the available water supply resource information, determining an optimal water supply path based on prestored water supply network topological structure information, controlling related water supply devices according to the optimal water supply path, starting fire valves according to a preset sequence, starting and adjusting fire water pumps, gradually adjusting actual water supply pressure and flow until the target water supply pressure and the target water supply quantity are achieved, continuously monitoring the state parameters and the fire related parameters of the water supply network, adjusting fire water pump output parameters or enabling standby water supply paths according to preset emergency strategies when abnormal conditions are detected, calculating and optimizing a multipoint water supply pressure distribution scheme, continuously meeting preset termination conditions and continuously meeting preset fire related parameters, continuously setting the preset water supply event time, continuously controlling the distributed control devices according to preset water supply network control sequence, stopping the preset water supply network, gradually reaching a preset water supply program, and gradually stopping the water supply system, and gradually setting the water supply network according to preset water supply network control sequence, and gradually stopping the preset water supply network control program.
In summary, the invention realizes accurate judgment and real-time tracking of fire conditions through multi-source information fusion and dynamic analysis, and greatly improves the accuracy and timeliness of system response. Based on the fire position, the grade, available water resources and other factors, the optimal water supply strategy is dynamically calculated, and the water supply efficiency and the resource utilization rate are remarkably improved. By adopting an improved path optimization algorithm and a closed-loop control mechanism, the accurate control of water supply pressure and flow is ensured, and the problems of unbalanced water supply and the like of high-rise buildings are effectively solved. And a multi-level abnormality detection and emergency treatment mechanism is introduced, so that the reliability and the fault self-healing capacity of the system are greatly enhanced, and the risks of equipment faults, pipe network damage and the like are effectively reduced.
Embodiment 2, referring to fig. 1 to 3, is a second embodiment of the present invention, and this embodiment provides a fire emergency water supply control system, in order to verify the beneficial effects of the present invention, scientific demonstration is performed through economic benefit calculation and simulation experiments.
The simulation experiment of the invention simulates the scene of fire disaster in a 15-layer office building. Experimental data shows that the distributed control network of the present invention rapidly collects and processes key fire related parameters at the early stage of the fire (t=0 minutes), including smoke concentration (75 ppm, exceeding the early warning threshold 50 ppm), ambient temperature (42 ℃, significantly higher than the normal range 18-25 ℃), carbon monoxide concentration (60 ppm, exceeding the safety threshold 50 ppm), infrared radiation intensity (1.8 kW/m2, higher than the background level 0.5 kW/m 2), and ultraviolet radiation intensity (0.08W/m 2, higher than the background level 0.02W/m 2).
During the fire confirmation and initial response phase (t=1 min), the system evaluates the fire class 2 (medium fire) according to a preset algorithm and pinpoints the fire occurrence at the northeast corner of the 8 th floor. Based on the fire location and grade information, the system selects an optimal water supply point (7-floor hydrant) and calculates an initial target water supply amount (1200L/min) and a target water supply pressure (0.8 MPa).
The water supply system starting process (t=2-5 minutes) embodies the quick response capability and accurate control characteristics of the invention. The system opens the fire valves of the 7,8 and 9 buildings according to a preset sequence, starts the main fire water pump, and increases the actual water supply amount from 1000L/min to 1180L/min within 3 minutes, and increases the water supply pressure from 0.7 MPa to 0.79 MPa, thereby rapidly approaching the initial target value.
In the development stage of fire (T=5-15 minutes), the invention shows the dynamic adaptability to the change of fire. When the fire spread to 9 floors (t=15 minutes), the system immediately re-evaluates the fire class 3 (large fire), adjusts the target water supply to 1800L/min accordingly, increases the target water supply pressure to 0.9 MPa, and activates the backup fire pump to meet the increasing demand.
The data of the fire control phase (t=15-30 minutes) verifies the continuous regulation capability of the invention. At t=20 minutes, the actual water supply amount reached 1750L/min and the water supply pressure reached 0.88: 0.88 MPa. Although the maximum temperatures of the 8, 9 floors rose to 82 ℃ once, they had fallen to 65 ℃ at t=30 minutes, indicating that the fire was effectively controlled.
In the fire extinguishing stage (T=30-60 minutes), the intelligent regulation characteristic is shown. When the monitored parameter is close to the safe level, the system automatically adjusts the water supply to 1200L/min. At t=60 minutes, all key parameters fall back to near normal levels, smoke concentration (40 ppm), temperature (32 ℃), carbon monoxide concentration (30 ppm), infrared radiation intensity (0.6 kW/m 2), ultraviolet radiation intensity (0.03W/m 2).
The system shutdown process (t=60-70 minutes) embodies the orderly control capability of the present invention. The system first steps down the water supply pressure and then closes the backup fire pump, the main fire pump and the associated fire valves in a predetermined sequence. And finally, the system executes a comprehensive self-checking program, including water supply network pressure test and equipment state check, and generates a detailed event report.
The simulation experiment data fully verify the quick response, accurate control and intelligent adjustment capability of the invention in the face of dynamic fire. The system can rapidly adjust strategies based on real-time fire change, effectively control fire spreading, and orderly complete closing procedures after fire extinction. These characteristics significantly improve the fire safety of large buildings. It should be noted that the system performance in practical application may be affected by the specific building environment, the equipment performance and other external factors, and the application effect of the present invention may be different according to the practical situation.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
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