Firefighting system, firefighting control method, device and storage medium thereof

Abstract

The application discloses a fire-fighting system and a fire-fighting control method, device and storage medium thereof. The fire-fighting system comprises a controller, a plurality of first temperature sensing cables, a plurality of second temperature sensing cables and a spraying device. The controller is connected with the first temperature sensing cables and the second temperature sensing cables respectively. The first temperature sensing cables are arranged in parallel under the roof of a to-be-monitored area in a first direction, and the second temperature sensing cables are arranged in parallel under the roof of the to-be-monitored area in a second direction, so that the to-be-monitored area is divided into a plurality of detection units. When the controller determines that a fire occurs based on processing of current signals of the temperature sensing cables, a spraying control signal is output to the spraying device to control the spraying device to implement spraying fire extinguishing on a fire area, so that accurate fire extinguishing on the fire area is realized, and unnecessary damage to electrical equipment without fire can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, and more particularly to a fire-fighting system, a fire-fighting control method and device thereof, and a storage medium. BACKGROUND

[0002] In recent years, countries around the world have vigorously developed new energy, and the installed capacity of new energy represented by photovoltaic power generation and wind power generation is rapidly growing. In photovoltaic power plants and wind power plants, a booster station is needed to step up the low voltage and realize grid connection, so the safe operation of the booster station is a key facility to ensure the safe transmission of power from these new energy power plants. At present, when a fire occurs in the booster station, the sprinkler system will try to spray fire extinguishing powder in a large area, that is, it strives to cover all facilities, equipment and instruments in the booster station. Although this ensures the best effect of fire extinguishing, it will cause unnecessary damage to other electrical equipment in the plant that has not caught fire. SUMMARY

[0003] Therefore, the present application provides a fire-fighting system, a fire-fighting control method and device thereof, and a storage medium, which are used to accurately extinguish fires in a booster station based on temperature sensing cables to avoid unnecessary damage to electrical equipment that has not caught fire.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following solutions.

[0005] A fire-fighting system comprises a controller, M first temperature sensing cables, N second temperature sensing cables and a spraying device, wherein:

[0006] The controller is provided with M first input ends and N second input ends, one first input end is connected with a corresponding first temperature sensing cable, and one second input end is connected with a second temperature sensing cable. The first temperature sensing cables are arranged in parallel under the roof of a to-be-monitored area in a first direction, and the second temperature sensing cables are arranged in parallel under the roof in a second direction intersecting the first direction. M and N are integers greater than 1, and the first temperature sensing cables and the second temperature sensing cables divide the to-be-monitored area into multiple detection units by interlacing each other.

[0007] The controller is further provided with a control signal output end connected with the spraying device for outputting a spraying control signal. The spraying control signal is used to control the spraying device to implement spraying fire extinguishing on a fire area, and the first temperature sensing cable and the second temperature sensing cable involved in the detection unit where the fire area is located have abnormal resistance.

[0008] Optionally, the first direction and the second direction are perpendicular to each other.

[0009] Optionally, the distance between every two of the first temperature sensing cables is less than or equal to 4 meters, and the distance between every two of the second temperature sensing cables is less than or equal to 4 meters.

[0010] Optionally, the spraying device comprises a plurality of water mist fire extinguishers corresponding to each of the detection areas.

[0011] Optionally, the water droplets sprayed by the water mist fire extinguishers have a size of 0.2-2.5 mm.

[0012] A fire control method applied to the fire control system described above, characterized in that the fire control method comprises the steps of:

[0013] collecting first current signals from the first temperature sensing cables and the second temperature sensing cables at a first sampling frequency, and calculating a first current temperature of each of the detection units according to the current signals;

[0014] when the first current temperature of one or more of the detection units is abnormal, collecting second current signals from the first temperature sensing cables and the second temperature sensing cables related to the one or more detection units at a second sampling frequency, the second sampling frequency being greater than the first sampling frequency, and calculating a second current temperature according to the second current signals;

[0015] judging whether the second current temperature meets a fire determination condition, and if not, returning to the step of collecting first current signals from the first temperature sensing cables and the second temperature sensing cables at a first sampling frequency;

[0016] if the second current temperature meets the fire determination condition, determining that the one or more detection units are a fire area;

[0017] starting a spraying device to implement fire extinguishing on the fire area.

[0018] Optionally, the method further comprises the steps of:

[0019] collecting third current signals from the first temperature sensing cables and the second temperature sensing cables related to adjacent detection units of the one or more detection units at the second sampling frequency, and calculating a third current temperature according to the third current signals;

[0020] judging whether the adjacent detection units are the fire area according to the third current temperature and the fire determination condition, and if the adjacent detection units are the fire area, returning to the step of starting a spraying device to implement fire extinguishing on the fire area, and if the adjacent detection units are not the fire area, returning to the step of collecting first current signals from the first temperature sensing cables and the second temperature sensing cables at a first sampling frequency;

[0021] A fire control device applied to the fire control system as described above, the fire control device comprising:

[0022] A first sampling control module configured to collect first current signals from the first temperature cable and the second temperature cable at a first sampling frequency, and calculate a first current temperature of each detection unit according to the current signals;

[0023] A second sampling control module configured to collect second current signals from the first temperature cable and the second temperature cable related to one or more detection units at a second sampling frequency when the first current temperature of the one or more detection units is abnormal, the second sampling frequency being greater than the first sampling frequency, and calculate a second current temperature according to the second current signals;

[0024] A first fire judgment module configured to judge whether the second current temperature meets a fire judgment condition, and return to the step of collecting first current signals from the first temperature cable and the second temperature cable at a first sampling frequency if the second current temperature does not meet the fire judgment condition;

[0025] A fire area judgment module configured to determine the one or more detection units as a fire area if the second current temperature meets the fire judgment condition;

[0026] A fire extinguishing control module configured to start the spraying device to implement fire extinguishing on the fire area.

[0027] Optionally, further comprising:

[0028] A third sampling control module configured to collect third current signals from the first temperature cable and the second temperature cable related to adjacent detection units of the one or more detection units at the second sampling frequency, and calculate a third current temperature according to the third current signals;

[0029] A second fire judgment module configured to judge whether the adjacent detection units are the fire area according to the third current temperature and the fire judgment condition, return to the step of starting the spraying device to implement fire extinguishing on the fire area if the adjacent detection units are the fire area, and return to the step of collecting first current signals from the first temperature cable and the second temperature cable at a first sampling frequency if the adjacent detection units are not the fire area.

[0030] A storage medium applied to a controller, the storage medium carrying one or more computer programs, the one or more computer programs being executable by the controller to enable the controller to implement the fire control method as described above.

[0031] From the above technical solution can be seen, the present application discloses a kind of fire control system and its fire control method, device and storage medium, the fire control system includes controller, multiple first temperature sensing cable, multiple second temperature sensing cable and spraying device.The controller is connected with the first temperature sensing cable, second temperature sensing cable respectively, first temperature sensing cable is arranged in parallel under the roof of the area to be monitored in first direction, the second temperature sensing cable is arranged in parallel under the roof in second direction, so as to divide the area to be detected into multiple detection units;When controller determines that fire occurs based on the processing of current signal of temperature sensing cable, spraying control signal is output to the spraying device, to control the spraying device to implement spraying fire extinguishing to fire area, realize the accurate fire extinguishing of fire area, so as to avoid unnecessary damage to electrical equipment that no fire occurs. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0033] Figure 1 A schematic diagram of a fire control system according to an embodiment of the present application;

[0034] Figure 2 A position diagram of a water mist fire extinguisher according to an embodiment of the present application;

[0035] Figure 3 A flow chart of a fire control method according to an embodiment of the present application;

[0036] Figure 4 A flow chart of another fire control method according to an embodiment of the present application;

[0037] Figure 5 A position diagram of a fire area according to an embodiment of the present application;

[0038] Figure 6 A block diagram of a fire control device according to an embodiment of the present application;

[0039] Figure 7 A block diagram of another fire control device according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] Example 1

[0042] Figure 1 This is a schematic diagram of a fire protection system according to an embodiment of this application.

[0043] like Figure 1 As shown, the fire protection system provided in this embodiment is arranged in the area to be tested, such as in a booster station. Specifically, it includes a controller 100, M first temperature sensing cables 200 and N second temperature sensing cables 300, where M and N are both integers greater than 1. In addition, the fire protection system also includes a sprinkler device 400, which is used to spray extinguishing agents, such as powder, foam or water mist, to a preset location based on the control of the controller.

[0044] The controller is provided with M first input terminals 101, N second input terminals 102 and at least one control signal output terminal 103. Each first input terminal is used to connect one end of a first temperature sensing cable, and the other end of the first temperature sensing cable is used to connect to the corresponding drive power supply to receive the corresponding drive voltage VCC. One end of each second input terminal is used to connect one end of a second temperature sensing cable, and the other end of the second temperature sensing cable is used to connect to the corresponding drive power supply to receive the corresponding drive voltage VCC.

[0045] The first temperature-sensing cable is laid parallel to the roof of the area to be monitored, at certain intervals along a first direction. The second temperature-sensing cable is also laid parallel to the first temperature-sensing cable, at certain intervals along a second direction, thus dividing the area to be monitored into multiple detection units. The spacing between any two first temperature-sensing cables and between any two second temperature-sensing cables can be determined according to the actual engineering conditions, but to ensure fire protection effectiveness, the spacing should not exceed 4 meters. Therefore, the spacing in this application is less than or equal to 4 meters.

[0046] The first and second directions here are relative concepts, which can also be understood as one being horizontal and the other vertical. The first and second directions can be perpendicular or arranged at other angles.

[0047] The working principle of the temperature sensing cable is that when the temperature on site changes, the resistance between the steel wire conductors changes, each section of the temperature sensing cable can be equivalent to a thermistor, the resistance of which changes with the change of temperature, and the current flowing in the cable changes under the driving of the corresponding voltage at both ends of the resistance.

[0048] The controller, after receiving the corresponding current signals generated by the first temperature sensing cable and the second temperature sensing cable under the driving of the driving voltage, performs AD conversion on the current signals, compares the corresponding current values, and performs comparison processing on the current values based on certain determination rules. When it is determined that temperature abnormity occurs in one or more detection areas, and the corresponding detection area is further determined to be a fire area where fire occurs by changing the sampling frequency, the controller outputs a spraying control signal to the spraying device through the control signal output end.

[0049] The spraying device sprays and extinguishes fire in the fire area after receiving the spraying control signal. Generally, the spraying device includes a plurality of water mist extinguishers corresponding to each detection area, as shown in the figure. Therefore, at this time, the corresponding water mist extinguisher is started to spray and extinguish fire in the fire area, thereby achieving the purpose of precise fire fighting. Figure 2

[0050] Each water mist extinguisher has an independent control valve, and the controller controls the opening and closing of each water mist extinguisher valve to achieve individual control of the water mist extinguisher. The water droplet size sprayed by the water mist extinguisher is 0.2-2.5mm, and the sprayed droplets easily become steam after being heated. Therefore, the extinguishing mechanism of water spray is mainly through the effects of surface cooling, suffocation, dilution, impact emulsification and covering.

[0051] As can be seen from the above technical solution, the embodiment provides a fire fighting system, which includes a controller, a plurality of first temperature sensing cables, a plurality of second temperature sensing cables and a spraying device. The controller is connected with the first temperature sensing cables and the second temperature sensing cables, the first temperature sensing cables are arranged in parallel under the roof of a to-be-monitored area in a first direction, and the second temperature sensing cables are arranged in parallel under the roof of the to-be-monitored area in a second direction, so as to divide the to-be-monitored area into a plurality of detection units; when the controller determines that a fire occurs based on the processing of the current signals of the temperature sensing cables, the controller outputs a spraying control signal to the spraying device to control the spraying device to spray and extinguish fire in the fire area, so as to achieve precise fire extinguishing in the fire area and avoid unnecessary damage to electrical equipment that does not catch fire.

[0052] Embodiment Two

[0053] Figure 3 The flowchart of a fire fighting control method of the embodiment of the application.

[0054] As Figure 3 ​As shown, the fire control method provided by the embodiment is applied to the fire control system of the previous embodiment, and specifically applied to the controller, which can be understood as a computer or an embedded device with information processing capability, for implementing control on the spraying device. The fire control method specifically includes the following steps.

[0055] S1, collecting a first current signal from the first temperature sensing cable and the second temperature sensing cable at a first sampling frequency.

[0056] That is, collecting the current signal generated by the first temperature sensing cable and the second temperature sensing cable based on the driving voltage at a preset first sampling frequency. The current signal is inversely proportional to the resistance thereof, and the first current signal is processed based on this principle to obtain the first current temperature of each detection area formed by the first temperature sensing cable and the second temperature sensing cable.

[0057] S2, collecting the current signal at a second sampling frequency when the first current temperature is abnormal.

[0058] Because the electrical equipment contained in the detection area has its own characteristics, each detection area has its own normal temperature. After obtaining the first current temperature, the first current temperature is compared with the normal temperature of each detection area. If the first current temperature is different from the corresponding normal temperature, it is determined that the first current temperature of the detection area is abnormal. At this time, the sampling frequency is increased, that is, the second current signal is collected from the first temperature sensing cable and the second temperature sensing cable at a second sampling frequency higher than the first sampling frequency.

[0059] Here, the current signal of the first temperature sensing cable and the second temperature sensing cable related to one or more detection areas with abnormal temperature can be collected, that is, the current signal at this location is taken as the second current signal, and the second current temperature of the one or more detection areas is obtained by processing the second current signal.

[0060] S3, determining whether the second current temperature meets the fire determination condition.

[0061] That is, comparing the second current temperature with the normal temperature of the detection area to determine whether it exceeds a certain temperature range of the normal temperature, that is, determining whether it meets the fire determination condition. If the fire determination condition is not met, return to step S1, that is, re-collect the current signal at the first sampling frequency.

[0062] S4, determining that the corresponding detection area is a fire area.

[0063] That is, if the above determination is made, if it is determined that the one or more detection areas meet the above fire determination condition, it is determined that the one or more detection areas are fire areas where fire occurs.

[0064] S5, starting the spraying device to implement fire extinguishing on the fire area.

[0065] That is, starting the water mist fire extinguisher corresponding to the fire area in the spraying device to implement precise fire extinguishing on the fire area.

[0066] Through the above operation, the fire extinguishing system can implement precise fire extinguishing on the fire area, thereby avoiding unnecessary damage to electrical equipment without fire.

[0067] In addition, in one specific embodiment of the present embodiment, the following steps are further included, as shown in Figure 4

[0068] S6, implementing enlarged current sampling on the adjacent detection unit of the fire area.

[0069] Specifically, if the above-mentioned second sampling frequency is used, the adjacent detection areas b, c, d, e, f, g and h adjacent to the fire area a where the fire occurs are determined as the adjacent detection unit, as shown in Figure 5 The current signals of the first temperature sensing cable and the second temperature sensing cable involved in the adjacent detection unit are sampled to obtain a third current signal, and the third current signal is calculated to obtain a third current temperature.

[0070] S7, judging the adjacent detection unit according to the third current temperature.

[0071] That is, whether the adjacent detection unit meets the above-mentioned fire determination condition is judged according to the third current temperature, to determine whether the corresponding adjacent detection unit is a fire area. If it is determined that the adjacent detection unit is the fire area, it returns to the step of starting the spraying device to implement fire extinguishing on the fire area. If the adjacent detection unit is not the fire area, it returns to step S1 to collect the first current signal from the first temperature sensing cable and the second temperature sensing cable at the first sampling frequency.

[0072] ​The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0073] Although the operations are depicted in a particular, sequential order, this should not be understood as requiring or

[0074] It is to be understood that the steps of the methods recited in the method embodiments of the present disclosure can be carried out in a different order and / or concurrently with each other. Additional steps can also be employed.

[0075] Computer program code for carrying out operations of the present disclosure can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0076] Embodiment Three

[0077] Figure 6 A block diagram of a fire control device according to an embodiment of the present application.

[0078] As Figure 6As shown, the fire control device provided by the embodiment is applied to the fire control system of the first embodiment, and specifically applied to the controller, which can be understood as a computer or an embedded device with information processing capability, for implementing control on the spraying device. The fire control device specifically comprises a first sampling control module 10, a second sampling control module 20, a first fire judgment module 30, a fire area judgment module 40, and a fire extinguishing control module 50.

[0079] The first sampling control module is configured to collect the first current signals from the first temperature sensing cable and the second temperature sensing cable at a first sampling frequency.

[0080] That is, the current signals generated by the first temperature sensing cable and the second temperature sensing cable based on the driving voltage are collected at the preset first sampling frequency. The current signals are inversely proportional to the respective resistances, and the first current signals are processed based on this principle to obtain the first current temperature of each detection area formed by the first temperature sensing cable and the second temperature sensing cable.

[0081] The second sampling control module is configured to collect the current signals at a second sampling frequency when the first current temperature is abnormal.

[0082] Because the electrical equipment contained in each detection area has its own characteristics, each detection area has its own normal temperature. After obtaining the first current temperature, the first current temperature is compared with the normal temperature of each detection area. If the first current temperature is different from the corresponding normal temperature, it is determined that the first current temperature of the detection area is abnormal. At this time, the sampling frequency is increased, that is, the second current signals are collected from the first temperature sensing cable and the second temperature sensing cable at the second sampling frequency which is higher than the first sampling frequency.

[0083] Here, the current signals of the first temperature sensing cable and the second temperature sensing cable related to one or more detection areas with abnormal temperature can be collected, that is, the current signals at this location are taken as the second current signals, and the second current temperature of the one or more detection areas is obtained through processing of the second current signals.

[0084] The first fire judgment module is configured to judge whether the second current temperature meets the fire judgment condition.

[0085] That is, the second current temperature is compared with the normal temperature of the detection area to determine whether it exceeds a certain temperature range of the normal temperature, that is, whether the fire judgment condition is met. If the fire judgment condition is not met, the first sampling control module re-collects the current signals at the first sampling frequency.

[0086] The fire area judgment module is configured to determine that the corresponding detection area is a fire area.

[0087] If the second current temperature of the one or more detection areas meets the fire determination condition, the one or more detection areas are determined as the fire area.

[0088] The fire extinguishing control module is configured to control the spraying device to extinguish the fire in the fire area.

[0089] That is, the water mist extinguisher corresponding to the fire area in the spraying device is controlled to extinguish the fire in the fire area.

[0090] Through the above operation, the fire extinguishing system can extinguish the fire in the fire area accurately, thereby avoiding unnecessary damage to the electrical equipment without fire.

[0091] In addition, in one specific embodiment of the present embodiment, a third sampling control module 60 and a second fire determination module 70 are further included, as shown in Figure 7 .

[0092] The third sampling control module is configured to sample the current of the adjacent detection unit of the fire area.

[0093] Specifically, the current signals of the first temperature sensing cable and the second temperature sensing cable involved in the adjacent detection unit are sampled at the second sampling frequency, to obtain a third current signal, and the third current signal is calculated to obtain a third current temperature. Figure 4

[0094] The second fire determination module is configured to determine the adjacent detection unit according to the third current temperature.

[0095] That is, whether the adjacent detection unit meets the fire determination condition according to the third current temperature is determined, to determine whether the corresponding adjacent detection unit is the fire area. If the adjacent detection unit is determined as the fire area, the fire extinguishing control module is driven to control the spraying device to extinguish the fire in the fire area. If the adjacent detection unit is not the fire area, the first sampling control module is controlled to sample the first current signal from the first temperature sensing cable and the second temperature sensing cable at the first sampling frequency.

[0096] The units involved in the embodiments of the present disclosure can be implemented in the form of software or hardware. The name of the unit does not constitute a limitation on the unit itself in some cases. For example, the first acquisition unit can also be described as a unit for acquiring at least two internet protocol addresses.

[0097] ​The functionality described herein above can be performed, at least in part, by one or more hardware logic components. For example, and without limitation, illustrative types of hardware logic components that can be used include Field-programmable Gate Arrays (FPGAs), Program-specific Integrated Circuits (ASICs), Program-specific Standard Products (ASSPs), System-on-a-chip systems (SOCs), Complex Programmable Logic Devices (CPLDs), etc.

[0098] Embodiment Four

[0099] The embodiment provides a computer readable storage medium, which carries one or more programs, and when the one or more programs are executed by the controller in the embodiment, the controller implements the fire control method provided by the embodiment two.

[0100] It should be noted that the computer readable medium described above in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present disclosure, the computer readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer readable program code. Such a propagated data signal can take many forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any computer readable medium other than the computer readable storage medium, which can send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained in the computer readable medium can be transmitted by any suitable medium, including but not limited to a wire, an optical fiber, an RF (radio frequency) or the like, or any suitable combination of the above.

[0101] Each of the embodiments in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0102] While the preferred embodiments of the application have been described above, it will be recognized and understood that various modifications and changes can be made to the embodiments of the application by those skilled in the art having the benefit of this detailed description without departing from the scope of the application as defined by the appended claims. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.

[0103] Finally, it is also important to note that the use of relational terms such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0104] The above detailed description has set forth various embodiments of the techniques provided by the application. The description has set forth the principles of the application and the practical application of those principles. The description has set forth the principles of the application and the practical application of those principles. The description set forth neither uses nor implies any specific application of the principles of the application nor any specific uses thereof, and various modifications will be made apparent to those skilled in the art.

Claims

1. A fire protection system, characterized in that The controller, M first temperature sensing cables, N second temperature sensing cables and a spraying device are included, wherein: The controller is provided with M first inputs and N second inputs, one first input is connected with one first temperature sensing cable, one second input is connected with one second temperature sensing cable, the first temperature sensing cables are arranged in parallel under the roof of the monitoring area in a first direction, the second temperature sensing cables are arranged in parallel under the roof in a second direction intersecting with the first direction, M and N are integers greater than 1, the first temperature sensing cables and the second temperature sensing cables divide the monitoring area into multiple detection units by interlacing each other; The controller is further provided with a control signal output end connected with the spraying device for outputting a spraying control signal, the spraying control signal is used to control the spraying device to implement spraying fire extinguishing to the fire area, the first temperature sensing cable and the second temperature sensing cable involved in the detection unit where the fire area is located have abnormal resistance; The controller is further used for receiving corresponding current signals generated by the first temperature sensing cables and the second temperature sensing cables under the driving of a driving voltage, performing AD conversion on the current signals to obtain corresponding current values, comparing the current values based on a preset judgment rule, when a temperature abnormality occurs in a detection unit, determining that the detection unit is a fire area when a fire occurs by changing a sampling frequency, and outputting a spraying control signal to the spraying device through the control signal output end.

2. The fire protection system of claim 1, wherein, The first direction and the second direction are perpendicular to each other.

3. The fire protection system of claim 1, wherein, The distance between every two first temperature sensing cables is less than or equal to 4 meters, and the distance between every two second temperature sensing cables is less than or equal to 4 meters.

4. The fire protection system of claim 1, wherein, The spraying device includes multiple water mist extinguishers corresponding to each detection unit.

5. The fire protection system of claim 4, wherein, The size of water droplets sprayed by the water mist extinguisher is 0.2-2.5 mm.

6. A fire control method applied to the fire control system according to any one of claims 1 to 5, characterized in that, The fire control method includes the steps of: Collecting first current signals from the first temperature sensing cables and the second temperature sensing cables at a first sampling frequency, and calculating a first current temperature of each detection unit according to the current signals; When the first current temperature of one or more detection units is abnormal, collecting second current signals from the first temperature sensing cables and the second temperature sensing cables involved in the one or more detection units at a second sampling frequency, the second sampling frequency is greater than the first sampling frequency, and calculating a second current temperature according to the second current signals; Judging whether the second current temperature meets a fire judgment condition, if not, returning to the step of collecting first current signals from the first temperature sensing cables and the second temperature sensing cables at a first sampling frequency; If the second current temperature meets the fire judgment condition, determining that the one or more detection units are fire areas; Starting the spraying device to implement fire extinguishing to the fire area.

7. The fire control method according to claim 6, wherein Further including the steps of: collecting, at the second sampling frequency, third current signals from the first temperature-sensing cable and the second temperature-sensing cable involving adjacent detection units of the one or more detection units, and calculating third current temperatures according to the third current signals; determining, according to the third current temperatures and the fire determination condition, whether the adjacent detection units are the fire area, and if the adjacent detection units are the fire area, returning to the step of activating the sprinkler device to implement fire extinguishing on the fire area, and if the adjacent detection units are not the fire area, returning to the step of collecting, at the first sampling frequency, first current signals from the first temperature-sensing cable and the second temperature-sensing cable.

8. A fire control device applied to the fire system according to any one of claims 1 to 5, characterized in that, The fire control device comprises: a first sampling control module configured to collect, at a first sampling frequency, first current signals from the first temperature-sensing cable and the second temperature-sensing cable, and calculate first current temperatures of each detection unit according to the current signals; a second sampling control module configured to, when the first current temperatures of one or more detection units are abnormal, collect, at a second sampling frequency, second current signals from the first temperature-sensing cable and the second temperature-sensing cable involving the one or more detection units, the second sampling frequency being greater than the first sampling frequency, and calculate second current temperatures according to the second current signals; a first fire determination module configured to determine whether the second current temperatures satisfy a fire determination condition, and if the second current temperatures do not satisfy the fire determination condition, return to the step of collecting, at the first sampling frequency, first current signals from the first temperature-sensing cable and the second temperature-sensing cable; a fire area determination module configured to, if the second current temperatures satisfy the fire determination condition, determine that the one or more detection units are the fire area; a fire extinguishing control module configured to activate the sprinkler device to implement fire extinguishing on the fire area.

9. The fire control apparatus of claim 8, wherein, Further comprising: a third sampling control module configured to collect, at the second sampling frequency, third current signals from the first temperature-sensing cable and the second temperature-sensing cable involving adjacent detection units of the one or more detection units, and calculate third current temperatures according to the third current signals; a second fire determination module configured to determine, according to the third current temperatures and the fire determination condition, whether the adjacent detection units are the fire area, and if the adjacent detection units are the fire area, return to the step of activating the sprinkler device to implement fire extinguishing on the fire area, and if the adjacent detection units are not the fire area, return to the step of collecting, at the first sampling frequency, first current signals from the first temperature-sensing cable and the second temperature-sensing cable.

10. A storage medium for use in a controller, the storage medium comprising: The storage medium carries one or more computer programs, which can be executed by the controller to enable the controller to implement the fire control method according to claim 6 or 7.

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