Real-time em fire extinguishing system based on building safety

Abstract

The invention relates to a real-time em fire fighting system based on building safety, belongs to the technical field of fire fighting, and solves the problems that firefighters are difficult to obtain an optimal rescue scheme, the operation efficiency is low, and effective communication is difficult to obtain in the prior art. Comprising a basic information management module used for storing and managing community information and basic information of a fire brigade; the information of the community comprises map road information, building information in the community and fire-fighting facility information; the data acquisition module is used for receiving alarm information issued by the command center; the alarm condition analysis and pre-arranged plan generation module generates a pre-arranged plan for rescue operation; the pre-arranged plan content comprises the distance between a fire hydrant in a community and an ignition point, the length of a water hose, the route of a fire fighting truck arriving at a fire building and the parking position of the fire fighting truck. The system provides an optimal scheme for rescue workers, the rescue efficiency is improved, the workers can feed back own position information, and the safety of the workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of fire protection technology, and in particular, to a real-time em fire protection system based on building safety. Background Art

[0002] The development of Internet of Things technology has strongly promoted the implementation and application of intelligent fire protection systems. Especially in a city full of high-rise buildings, the successful implementation of an efficient and reliable intelligent fire protection system is very meaningful. Generally speaking, an intelligent fire protection system includes: a disaster monitoring module, a server module, a communication module, a client, etc. Among them, the disaster monitoring module is used to collect the environmental data sensed in real time by various disaster sensors installed in the building and upload it to the server through the communication module; the server is an intelligent processing unit that can realize data fusion and analysis, disaster situation estimation, and issue instructions and alarms to the user terminal, etc.; the client can receive alarms through the web, report to the fire department, and feedback its own information in real time, etc.; in addition, some fire protection systems also have a control module, which is used to intelligently control fire protection facilities according to the analysis results of the server on the disaster situation, such as sprinkler equipment, smoke prevention equipment, and smoke exhaust equipment, etc.

[0003] At present, many literatures have been dedicated to improving the reliability and efficiency of intelligent fire protection systems. The improvement directions generally include: 1) improving the monitoring and management system to improve the accuracy of monitoring results; 2) improving the communication method to improve the real-time performance of information transmission; 3) strengthening the monitoring and control of fire protection facilities to improve the fire extinguishing speed and efficiency; 4) improving the algorithms for data processing and analysis in the server to improve the accuracy of analysis results; and 5) building a model of the building through simulation software and simulating the working process of the fire protection system to verify the reliability of the fire protection system in advance before implementation, etc.

[0004] Theoretically speaking, the above improved intelligent fire protection systems can all produce beneficial effects for eliminating disasters and reducing casualties. However, in practice, the degree of intelligence is not ideal. In the actual fire fighting and rescue process, to a large extent, it still depends on the operations of firefighters. Currently, the operation process of firefighters is usually as follows: after receiving a disaster alarm, they go to the disaster site, and the commander designates the combat intention according to the on-site situation, and the participating personnel carry out the fire fighting according to the combat order. The following problems exist in this process: 1) The information about the entrances of the community and the building is not comprehensively grasped, and it is difficult to enter the fire site in the shortest time with the optimal route; 2) Since the distance between the fire point and the fire hydrant or the fire truck cannot be accurately known, the length of the water hose is often not enough when laying it; 3) Due to the interference of on-site noise or low environmental visibility, the communication efficiency between the participating personnel and other people after entering the building is low, and it is difficult to feedback their own situation. In case of an accident, the outside world cannot carry out rescue in the shortest time, etc. In short, it is necessary to provide a fire protection system for firefighters that can plan the rescue plan in advance to assist fire fighting operations. Summary of the Invention

[0005] In view of the above analysis, embodiments of the present invention aim to provide a real-time em fire protection system based on building safety to solve the problems that it is difficult for existing firefighters to obtain an optimal rescue plan, the operation efficiency is low, and it is difficult to obtain effective communication.

[0006] Embodiments of the present invention provide a real-time em fire protection system based on building safety, including:

[0007] A basic information management module for storing and managing information of the community and basic information of the fire brigade; the information of the community includes: map road information, building information and fire protection facilities information in the community, contact information of the community property and householders;

[0008] A data collection module for receiving the alarm information issued by the command center;

[0009] An alarm analysis and pre-plan generation module, which generates a pre-plan for rescue operations based on the alarm information, information of the community, and basic information of the fire brigade; the content of the pre-plan includes: the distance between the fire hydrant and the fire point in the community, the length of the required water hose, the route for the fire truck to reach the fire building and its parking position.

[0010] Further, the fire protection system further includes a positioning module and a communication module. Among them, the positioning module obtains the position information of the users of the fire protection system and sends it to the command personnel through the communication module; the positioning module adopts a three-point positioning algorithm based on Wi-Fi signal strength.

[0011] Further, the content of the pre-plan further includes: planning a rescue route for the firefighters based on their position information.

[0012] Further, the fire protection system further includes a historical case review module for recording the information of the fire dispatch, rescue plan, rescue process and results, so as to quickly provide a rescue plan and plan when a disaster occurs again in this community.

[0013] Specifically, the fire protection system has three operation modes, namely: data entry and maintenance mode, fire fighting operation mode, and case review mode. The operation scenarios of the three modes are respectively before the alarm occurs, when the alarm occurs, and after the alarm ends.

[0014] Specifically, obtaining the position of the users of the fire protection system by using the three-point positioning algorithm based on Wi-Fi signal strength includes:

[0015] Pre-select three Wi-Fi signal transmitters located at l 1 ,l 2 and l 3 in the building, obtain their IP addresses, and measure the distance from l1 , l 2 and l 3 The Wi-Fi signal strength A at a distance of 1 meter from each of them 1 , A 2 and A 3 , and the environmental attenuation factor n 1 , n 2 and n 3 , and input the above information into the positioning module; at the same time, input the signal strength - distance conversion formula:

[0016]

[0017] where i = 1, 2, 3, RSSI i is the signal strength of the Wi-Fi signal from the i-th transmitter received by the fire protection system, A i is the signal strength at a distance of 1 meter from the i-th signal source, n i is the environmental attenuation factor for the i-th transmitter;

[0018] The positioning module selects the Wi-Fi signals sent by the above 3 signal transmitters from several Wi-Fi signals received from the fire protection system according to the IP addresses of the above 3 transmitters, obtains the strengths of these 3 signals, and based on the signal strength - distance formula, obtains the distances d 1 , d 2 and d 3 ;

[0019] The positioning module draws 3 circles with l 1 , l 2 and l 3 as the centers, and the radii are d 1 , d 2 and d 3 ; obtains the intersection points of the 3 circles, which is the position of the user of the fire protection system

[0020] Specifically, the distance between the fire hydrant and the fire point is calculated by the following method:

[0021] Determine the scale of the building floor plan and the building space;

[0022] The fire protection system obtains the map distance between the fire hydrant and the fire point based on the information of the fire protection facilities in the community;

[0023] According to the scale, convert the map distance into the space distance.

[0024] Specifically, the scale of the building floor plan and the building space is calculated by the six-point method, including:

[0025] In a building plan, measure the distance a between two points on a horizontal line. 1 , the map distance b between two points on a vertical line 1 , and the map distance c between two points on the oblique line that is at an angle to the horizontal line 1 ;

[0026] In actual construction, the spatial distance a between two points on the horizontal line is measured. 2 , the spatial distance b between two points on a vertical line 2 , and the spatial distance c between two points on the oblique line that is at an angle to the horizontal line 2 ;

[0027] Based on the ratio of the map distance and the spatial distance between two points, the scale R is calculated using the following formula:

[0028]

[0029] Furthermore, the length of the water hose is selected according to the distance between the fire hydrant and the fire point; the parking position of the fire truck is determined according to the length of the water hose and the position of the fire point.

[0030] Specifically, the route taken by the fire truck to reach the burning building includes an optimal route and an alternate route.

[0031] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0032] 1. By pre-entering the community building information into the basic information management module, the system uses the community building information and the alarm analysis and plan module. On the one hand, at the first moment of the alarm, multiple routes are planned for firefighters to enter the fire building, so that firefighters can arrive at the scene quickly. On the other hand, according to the distance between the fire hydrant and the fire point in the community, the required length of the water hose is calculated, so that firefighters can use appropriate equipment according to their needs. Furthermore, the location and number of rescue personnel are automatically planned according to the alarm situation, which further improves the efficiency of rescue operations;

[0033] 2. Through the positioning module, the location of firefighters is fed back in real time. On the one hand, rescue routes can be planned for them. On the other hand, when firefighters fail to respond for a long time, their location information can be obtained based on the positioning module to quickly rescue the personnel;

[0034] 3. The historical case review module records the police dispatch records and the entire rescue process. On the one hand, it can review the incident after the police incident is over, further optimize the system, and obtain a better solution; on the other hand, when a second fire occurs in the community, the rescue history can be quickly called up to obtain the content of the previous plan, further reducing the decision-making time of the commander and speeding up the operation.

[0035] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent specification. Moreover, some advantages can be made obvious from the specification or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained from the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present invention. Throughout the drawings, the same reference signs denote the same components.

[0037] Figure 1 It is a schematic diagram of the composition of the fire protection system described in the present invention.

[0038] Figure 2 It is the working content of the fire protection system described in the present invention in the data entry and maintenance mode.

[0039] Figure 3 It is the working content of the fire protection system described in the present invention in the fire fighting operation mode.

[0040] Figure 4 It is the working content of the fire protection system described in the present invention in the case review mode. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The preferred embodiments of the present invention will be specifically described below with reference to the drawings. The drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0042] A specific embodiment of the present invention discloses a real-time em fire protection system based on building safety, where em is Emergency Management, such as Figure 1As shown in the figure, it includes: a basic information management module for storing and managing the information of the community and the basic information of the fire brigade; the information of the community includes: map road information, building information and fire fighting facilities information in the community, contact information of the community property and householders; a data collection module for receiving the alarm information issued by the command center; an alarm analysis and pre-plan generation module that generates a pre-plan for rescue operations based on the alarm information, the information of the community, and the basic information of the fire brigade; the content of the pre-plan includes: the distance between the fire hydrants in the community and the fire point, the length of the required water hoses, the route for the fire truck to reach the fire building and its parking position; a positioning module and a communication module. Among them, the positioning module obtains the position information of the fire system user and sends it to the command personnel through the communication module; the positioning module adopts a three-point positioning algorithm based on Wi-Fi signal strength; and a historical case review module for recording the police dispatch information, rescue plan, rescue process and results to quickly provide rescue plans and plans when a disaster occurs again in this community.

[0043] During implementation, the fire system can be installed in the mobile devices carried by firefighters during operations and has three operating modes, namely: data entry and maintenance mode, fire fighting operation mode, and case review mode. The operating scenarios are respectively before the alarm occurs, during the alarm, and after the alarm ends.

[0044] Specifically, as Figure 2 shown in the figure, before the alarm occurs, the data entry and maintenance mode is run by firefighters or system developers, and the basic information management module is called to enter the information of each community within the jurisdiction of the fire brigade and the basic information of the fire brigade. The information of each community includes: the map and road information of each community, the building floor plan and the location information of fire fighting facilities in each community, the contact information of the property of each community, the floor plan of each household on each floor in each community, and the floor plan of each house and the contact information of the householder, etc. The basic information of the fire brigade includes: the personnel and fire equipment configuration information of the fire brigade, and the real-time shift schedule information, etc.

[0045] During the alarm, that is, when the data collection module obtains the alarm information from the command center and knows the location of the fire, as Figure 3As shown in the figure, the firefighters operate the fire fighting operation mode and call the alarm analysis and pre-plan generation module of the system. Based on the data of the data collection module and the basic information management module, this module quickly analyzes the alarm and generates a pre-plan for how the firefighters should rescue and operate. The content of the pre-plan includes: providing the location of the fire community and the risk levels of nearby communities, marking the building entrances and the locations of fire hydrants in the fire community, automatically generating multiple routes for fire trucks to enter the community based on the building entrances, calculating the distance between the fire hydrant and the fire point, obtaining the length of the required fire hose, marking the best parking positions of the fire trucks based on the length of the fire hose, planning the number and positions of rescue personnel according to the alarm analysis, etc. Among them, the length of the fire hose needs to cover the distance between the fire hydrant and the fire point.

[0046] The firefighters carry out operations according to the pre-plan provided by the system. After arriving at the fire site, they park the fire truck at the best position designated by the system. When the fire hydrants in the building cannot be used normally, they can quickly use the fire truck to extinguish the fire; after entering the room, they use the positioning module of the system to real-time feedback their positions to the commanders. On the one hand, the commanders can plan rescue routes for the firefighters according to their positions. On the other hand, when the firefighters do not respond for a long time, they can quickly go to their positions according to their positioning information to rescue them.

[0047] In addition, as the alarm situation changes, if the pre-plan automatically generated by the system is no longer applicable to the on-site situation, the firefighters can call up the building floor plan and the house type plan of the fire site on their mobile devices, manually map the rescue route and plan the tasks, generate a new operation plan, and send it to other participating personnel.

[0048] After the alarm situation ends, as Figure 3 shown in the figure, call the historical case management module to record the information of the alarm dispatch, rescue plan, rescue process and results, and conduct a review of the event as needed to further optimize the system.

[0049] Specifically, the routes for the fire trucks to reach the fire building include the best route and multiple alternative routes. Preferably, before the disaster occurs, corresponding arrival routes are pre-planned for different fire buildings, each including 1 best route and 2 alternative routes, and stored in the system in a database, so that when the alarm occurs, the planned routes can be quickly obtained by querying the database. Exemplarily, if the fire site is in Building 1, the system directly pops up 1 best route and 2 alternative routes to reach Building 1 based on the pre-established route planning database.

[0050] Specifically, the positioning module of the system uses a three-point positioning algorithm based on Wi-Fi signal strength to obtain the position of the users of the fire protection system. The specific operation is as follows:

[0051] System developers pre-select points located at l 1 ,l 2and l 3 At the three Wi-Fi signal transmitters at l, obtain their IP addresses and measure the distance from l 1 , l 2 and l 3 The Wi-Fi signal strengths A at 1 meter away from l 1 , A 2 and A 3 , and the environmental attenuation factor n 1 , n 2 and n 3 , and input the above information into the positioning module; at the same time, input the signal strength-distance conversion formula:

[0052]

[0053] where i = 1, 2, 3, RSSI i is the signal strength of the Wi-Fi signal received by the fire protection system from the i-th transmitter, A i is the signal strength at 1 meter away from the i-th signal source, n i is the environmental attenuation factor related to the i-th transmitter;

[0054] When positioning the firefighters carrying this system, the positioning module selects the Wi-Fi signals sent from the above three signal transmitters from several Wi-Fi signals received from the fire protection system according to the above three IP addresses, obtains the strengths of these three signals, and based on the signal strength-distance formula, obtains the distances d 1 , d 2 and d 3 ; The IP address and signal strength of the Wi-Fi signal can be obtained in real time through the Wi-Fi Manager tool in the mobile device;

[0055] The positioning module of the system draws three circles with l 1 , l 2 and l 3 as the centers, and the radii are d 1 , d 2 and d 3 , and then obtains the intersection of the three circles, and this intersection is the position of the user of this fire protection system.

[0056] Since this positioning module is mainly applied to indoor positioning, the influencing factors of the environmental attenuation factor are mainly the building and indoor obstacles (including walls, glass, wooden boards, elevators, etc.) in addition to the signal transmission distance, weather, and noise interference.

[0057] Specifically, the measurement method of the environmental attenuation factor described in the present invention is:

[0058] For three different emission sources i (i = 1, 2, 3), N groups of different are collected, where j = 1, 2, …, N, and are the distances between N signal receiving locations and the three emission sources respectively, and are the signal strengths received at N signal receiving locations respectively;

[0059] Based on the N groups of data of emission source i calculate the environmental attenuation factor n of this emission source i , and the calculation formula is:

[0060]

[0061] Store the calculated n 1 , n 2 and n 3 into the positioning module of the system; Exemplarily, the N signal receiving locations should cover each building, each floor and multiple houses in the community, and the building materials and house types of the multiple houses are different.

[0062] Specifically, the distance between the fire hydrant and the fire point is calculated by the following method:

[0063] Determine the scale of the building floor plan and the building space;

[0064] The fire protection system obtains the map distance between the fire hydrant and the fire point based on the information of the fire protection facilities in the community;

[0065] Convert the map distance between the fire hydrant and the fire point into the space distance according to the scale.

[0066] Specifically, the scale of the building floor plan and the building space is calculated by the six-point method, including:

[0067] Measure the map distance a between two points on the horizontal line in the building floor plan 1 , the map distance b between two points on the vertical line 1 , and the map distance c between two points on the oblique line with an angle to the horizontal line 1 ;

[0068] Measure the space distance a between two points on the above horizontal line in the actual building 2 , the space distance b between two points on the vertical line 2 , and the space distance c between two points on the oblique line with an angle to the horizontal line 2 ;

[0069] Based on the ratio of the map distance to the spatial distance between two points, calculate the scale ratio R, and the calculation formula is:

[0070]

[0071] Compared with the prior art, the real-time em fire protection system based on building safety provided by this embodiment can achieve one of the following beneficial effects:

[0072] 1. By pre-entering the building information of the community into the basic information management module, the system, based on the building information of the community and using the police situation analysis and pre-plan module, on the one hand, at the first moment when a police situation occurs, plan multiple routes for firefighters to enter the fire building, enabling firefighters to quickly reach the scene; on the other hand, calculate the length of the water hose required according to the distance between the fire hydrant and the fire point in the community, enabling firefighters to use appropriate equipment according to the needs; furthermore, automatically plan the location and number of rescue personnel according to the police situation, further improving the efficiency of rescue operations;

[0073] 2. Through the positioning module, the location of firefighters is fed back in real time. On the one hand, plan rescue routes for them; on the other hand, when firefighters do not respond for a long time, their location information can be obtained according to the positioning module to quickly rescue the personnel;

[0074] 3. Through the historical case review module, record the police dispatch records and the entire rescue process. On the one hand, the event can be reviewed after the police situation ends to further optimize the system and obtain a better solution; on the other hand, when a second fire occurs in the community, quickly call up the rescue history to obtain the content of the previous plan, further reducing the decision-making time of the commanders and accelerating the operation speed.

[0075] Those skilled in the art can understand that all or part of the processes of implementing the above embodiment methods can be completed by instructing relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. Among them, the computer-readable storage medium is a magnetic disk, an optical disk, a read-only memory, or a random access memory, etc.

[0076] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A real-time em fire protection system based on building safety, characterized in that, it includes: A basic information management module for storing and managing the information of the community and the basic information of the fire brigade; The information of the community includes: map road information, building information in the community, and fire protection facility information; A data collection module for receiving the alarm information issued by the command center; An alarm analysis and pre-plan generation module, which generates a pre-plan for rescue operations based on the alarm information, the information of the community, and the basic information of the fire brigade; the content of the pre-plan includes: the distance between the fire hydrant and the fire point in the community, the length of the required water hose, the route for the fire truck to reach the fire building and its parking position.

2. The real-time em fire protection system based on building safety according to claim 1, characterized in that, it further includes: A positioning module and a communication module, wherein the positioning module obtains the position information of the users of the fire protection system and sends it to the command personnel through the communication module; the positioning module adopts a three-point positioning algorithm based on Wi-Fi signal strength.

3. The real-time em fire protection system based on building safety according to claim 2, characterized in that, The content of the pre-plan further includes: planning a rescue route for the fire personnel based on their position information.

4. The real-time em fire protection system based on building safety according to claim 1, characterized in that, it further includes a historical case review module for recording the alarm information, rescue plan, rescue process and results, so as to quickly provide a rescue plan and plan when a disaster occurs again in this community.

5. The real-time em fire protection system based on building safety according to any one of claims 1-4, characterized in that, The fire protection system has three operating modes, namely: data entry and maintenance mode, fire fighting mode, and case review mode. The operating scenarios of the three modes are respectively before the alarm occurs, when the alarm occurs, and after the alarm ends.

6. The real-time em fire protection system based on building safety according to claim 2, characterized in that, Obtaining the position of the users of the fire protection system by using the three-point positioning algorithm based on Wi-Fi signal strength includes: Pre-select three Wi-Fi signal transmitters located at l 1 , l 2 and l 3 inside the building, obtain their IP addresses, and measure the Wi-Fi signal strengths A 1 , l 2 and l 3 at 1 meter away from l 1 , A 2 and A 3 , as well as the environmental attenuation factors n 1 , n 2 and n 3 , and input the above information into the positioning module; at the same time, input the signal strength-distance conversion formula: where \(i = 1, 2, 3\), RSSI i is the signal strength of the Wi-Fi signal of the \(i\)th emission source received by the fire protection system, and \(A\) i is the signal strength at a distance of 1 meter from the \(i\)th signal source, and \(n\) i is the environmental attenuation factor for the \(i\)th emission source; The positioning module selects the Wi-Fi signals sent by the above three signal transmitters from several Wi-Fi signals received from the fire protection system according to the IP addresses of the above three transmitters, obtains the intensities of these three signals, and based on the signal intensity-distance formula, obtains the distances d between the fire protection system and the three Wi-Fi signal transmitters 1 , d 2 and d 3 ; The positioning module draws three circles with l 1 , l 2 and l 3 as the centers, and the radii are d 1 , d 2 and d 3 respectively; obtain the intersection points of the three circles, which are the positions of the users of the fire protection system.

7. The real-time em fire protection system based on building safety according to claim 1, characterized in that, The distance between the fire hydrant and the fire point is calculated by the following method: Determine the scale of the building floor plan and the building space; The fire protection system obtains the map distance between the fire hydrant and the fire point based on the information of the fire protection facilities in the community; According to the scale, convert the map distance into the space distance.

8. The real-time em fire protection system based on building safety according to claim 7, characterized in that, The scale of the building floor plan and the building space is calculated by the six-point method, including: In the architectural floor plan, measure the map distance a between two points on the horizontal line 1 , the map distance b between two points on the vertical line 1 , and the map distance c between two points on the oblique line with an angle to the horizontal line 1 ; In an actual building, measure the spatial distance a between two points on the above-mentioned horizontal line 2 , the spatial distance b between two points on the vertical line 2 , and the spatial distance c between two points on the oblique line that forms an angle with the horizontal line 2 ; Based on the ratio of the map distance and the space distance between two points, calculate the scale R, and the calculation formula is:

9. The real-time em fire protection system based on building safety according to claim 8, characterized in that, The length of the water hose is selected according to the distance between the fire hydrant and the fire point; the parking position of the fire truck is determined according to the length of the water hose and the position of the fire point.

10. The real-time em fire protection system based on building safety according to claim 1, characterized in that, the routes for the fire truck to reach the fire building include the optimal route and the alternate route.

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