Fire-fighting escape early warning monitoring device and method for high-rise building

Abstract

The application discloses a high-rise building fire fighting and escaping early warning monitoring device and method, and relates to the technical field of linkage fire safety.The application is configured with early warning monitoring boxes in each floor area of the high-rise building floor ladder, which timely and effectively monitors the surrounding environment airflow temperature and smoke concentration when a fire occurs, analyzes the temperature safety factor and smoke concentration safety factor of the floor area where the fire exists in real time, analyzes the longest safe time that can be separated from the floor where the fire occurs, and according to the position of the trapped person and the state of fire spread, the cloud system timely sends corresponding escaping safety signals to the trapped person's mobile phone APP, provides a relatively accurate and safe escaping scheme for the trapped person, so that when a fire occurs in the high-rise building, the trapped person can timely and relatively safely escape from the fire area, and the trapped person can also avoid the danger caused by rashly breaking out.

Description

Technical Field

[0001] This invention relates to the field of fire safety technology, and in particular to a fire escape early warning monitoring device and early warning method for high-rise buildings. Background Technology

[0002] When a fire breaks out in a high-rise building, it takes a considerable amount of time for fire trucks to arrive at the scene and begin emergency firefighting operations. During this time, residents in high-rise buildings undoubtedly experience significant panic. In their haste, regardless of their actual situation, they may rush to escape via stairwells, emergency exits, or even jump from windows. This panicked escape, without knowing the safety of the situation, undoubtedly exacerbates the danger. In actual fires, some floors are below the fire-affected floor and can be escaped directly via stairwells. However, for other floors, especially those above or below the fire-affected floor, it is best to assess the real-time fire situation before making an appropriate escape. If the fire situation is not fully understood when an escapee discovers it, descending rashly carries a high risk (for example, if a fire has spread from floors 9 to 12, but the escapee is on the 13th floor, they may assume the fire is on the 12th floor and that it is weak, leading them to descend and potentially encounter danger on the 10th floor where the fire is more intense). Another scenario involves a fire that initially appears weak. Trapped individuals may notice the fire but mistakenly believe it's already large enough to prevent timely escape. Firefighters may not arrive by then, and by the time they do, the fire has already intensified, significantly increasing the risk of escape. This inability to accurately assess the fire's condition in a timely manner, leading to a higher probability of danger during escape, poses a significant safety hazard during fire escape. Therefore, ensuring the timely and safe evacuation of trapped individuals from high-rise building fires, or preventing them from recklessly attempting to break out and causing harm, is a crucial issue that requires utmost attention in modern high-rise building fire safety. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fire escape early warning and monitoring device and early warning method for high-rise buildings, so as to ensure that trapped people can escape from the fire area in a timely and relatively safe manner when a fire occurs in a high-rise building, and also to prevent trapped people from recklessly "breaking out" and causing danger.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] This invention provides a fire escape early warning and monitoring device for high-rise buildings. Each floor area of ​​the stairwell in the high-rise building is equipped with an early warning monitoring box. The early warning monitoring box includes a thermal contact cavity and a main control board fixedly installed adjacent to the thermal contact cavity. The early warning monitoring box also has an airflow cavity. The main control board is equipped with a temperature sensor and a smoke concentration sensor extending into the airflow cavity. An air intake fan is installed at one port of the airflow cavity, and an exhaust port is formed at the other port. The thermal contact cavity contains a heat-conducting block with at least one side exposed to the outside. The heat-conducting block is fixedly connected to a heat-deformable metal sheet, which is normally bent. A contact conductive plate that matches the position of the heat-deformable metal sheet is fixedly installed in the thermal contact cavity. The heat-deformable metal sheet and the contact conductive plate are connected to the built-in circuit of the main control board. The temperature sensor and the smoke concentration sensor are connected in parallel in the electrical circuit of the main control board. The main control board has a built-in time relay module, and the air intake fan and the time relay module are connected in series in the electrical branch where the smoke concentration sensor is located. The main control board has a built-in charging power supply, wireless module, and encoding module. The charging power supply is connected to an external power supply line.

[0006] As a preferred technical solution of the escape early warning and monitoring device of the present invention: a heat insulation pad is wrapped around the main control board, and the temperature sensor and smoke concentration sensor are exposed in the airflow cavity through the heat insulation pad.

[0007] As a preferred technical solution of the escape early warning and monitoring device of the present invention: the heat-deformable metal sheet and the contact conductive sheet are normally disconnected, and the heat-deformable metal sheet is squeezed and contacted with the contact conductive sheet after being heated and deformed.

[0008] As a preferred technical solution of the escape early warning and monitoring device of the present invention: a switching circuit is provided between the charging power supply and the external power line. Under normal circumstances, when the charging power supply is less than half full, the external power line charges the charging power supply until it is fully charged.

[0009] As a preferred technical solution of the escape early warning and monitoring device of the present invention: the outer surface of the early warning and monitoring box is coated with a layer of fireproof material, and the box body of the early warning and monitoring box adopts a double-layer heat insulation structure.

[0010] This invention provides a fire escape early warning method for high-rise buildings, comprising the following steps:

[0011] Step 1. The cloud system uses the encoding module in the early warning monitoring box to obtain the location information of the early warning monitoring boxes in each floor area of ​​the stairwell of the high-rise building, denoted as [S1, S2, S3, ..., S...]. n ].

[0012] Step 2. When a fire occurs in a high-rise building, the early warning monitoring boxes in each floor area of ​​the stairwell begin to monitor the real-time fire situation: In the stairwell area of ​​the floor where the fire occurs, the heat-conducting block of the early warning monitoring box transfers heat to the heat-deformed metal sheet. The heat-deformed metal sheet deforms due to heat and makes contact with the contact conductive sheet. At the same time, the temperature sensor, smoke concentration sensor and air intake fan are turned on.

[0013] Step 3. The intake fan draws outside air into the airflow chamber. The temperature sensor in the early warning monitoring box monitors the real-time airflow temperature, denoted as Wx, and the smoke concentration sensor in the early warning monitoring box monitors the real-time smoke concentration, denoted as Kx. The early warning monitoring box transmits the real-time airflow temperature and smoke concentration information to the cloud system via a wireless module. Simultaneously, the early warning monitoring box also transmits the floor location information Sx pre-stored in the encoding module to the cloud system via a wireless module.

[0014] Step 4. The cloud system obtains the real-time floor where a fire occurred in the high-rise building. The cloud system sends the location information of the fire-affected floor to the corresponding mobile app. The location of the fire-affected floor is denoted as [S]. X S X+1 S X+2 S X+m The system sends information about floors from which escape via stairs to the mobile app, denoted as [S1, S2, S3, ..., S...]. X-1 ].

[0015] Step 5. For floors above the area where a fire has already occurred, the cloud system performs the following analysis:

[0016] First, the cloud system presets a normal airflow temperature value Wo. The cloud system then analyzes the temperature safety factor ε for each floor in the event of a fire. The temperature safety factor f(ε) ∝ f -1 (W X -W O ), 0≤f(ε)≤1, to obtain the temperature safety factor for each floor where the fire occurs: [f(ε) X ), f(ε X+1 ), f(ε X+2 ), ..., f(ε X+m The cloud system analyzes the smoke concentration safety factor λ for each floor where the fire occurred, and the smoke concentration safety factor f(λ)∞f -1 (K X ), 0≤f(λ)≤1, to obtain the safety factor of smoke concentration on each floor where the fire occurred: [f(λ) X ), f(λ X+1 ), f(λ X+2 ), ..., f(λ) X+m )).

[0017] Second, the cloud system presets a maximum safe evacuation time t in the event of a fire on a single floor. s Therefore, there exists a maximum safe time to leave the floor where the fire occurred:

[0018] t max ={min[f(e X ), f(λ X )]+min[f(ε X+1 ), f(λ X+1 )]+...+min[f(ε X+m ), f(λ X+m )]}·t s .

[0019] Third, through real-time monitoring of airflow temperature and smoke concentration via early warning monitoring boxes at each floor, the cloud system obtains real-time information on the continuous spread of fire within the high-rise building, acquiring the upward spread speed V1 of the fire. The cloud system accumulates the total stair travel distance of the floors where the fire occurred. Let the number of consecutive floors where the fire occurred be m+1, and the total stair travel distance L of the floors where the fire occurred be... z = (m+1)·L D , where L D This represents the stair travel distance for a single floor. The cloud system presets the human descent speed on stairs to be V. R Trapped individuals can enter their current floor location (S) into the mobile app. Z Where Z > X + m. The cloud system analyzes the floor location S. Z Location S of the highest floor where the fire is currently taking place X+m Total stair travel L between C =(ZXm)·L D The time interval between the trapped personnel encountering the upward-rushing fire during their descent is t1 = L. C / (V R -V1). The total travel distance of the staircase where the fire occurred when trapped personnel encountered a fire while escaping downhill is L. H =L Z +V1·t1. The minimum time taken for trapped personnel to escape from the fire zone during their descent is t. min =L H / V R .

[0020] Fourth, the cloud system determines the minimum time t required to move away from the fire zone. min The longest safe time t to leave the floor where the fire occurred max The size of the signal is determined, and a corresponding escape signal is sent to the survivor's mobile app: if t min <t maxIf the cloud system sends a signal to the survivor's mobile app stating "Escape via the stairs as soon as possible," then... min ≥t max The cloud system then sends a signal to the survivor's mobile app stating, "Going downhill to escape is dangerous. Please go uphill to find a safe area and wait for rescue."

[0021] As a preferred technical solution of the escape warning method of the present invention: when the mobile APP is opened and run for the first time, the user needs to use the current geographical location information by default, and at the same time, the user needs to enter the address information of the high-rise building and the floor information of their residence in the mobile APP.

[0022] Compared with existing technologies, the beneficial effects of this invention are:

[0023] This invention involves installing early warning monitoring boxes on each floor of the stairwell in high-rise buildings. In the event of a fire, these boxes promptly and effectively monitor the surrounding airflow temperature and smoke concentration. By analyzing the temperature and smoke concentration safety factors of the floors where fires occur, the system determines the longest safe time to escape from the fire-affected floor. Simultaneously, based on the location of the trapped person and the fire's spread, the cloud system promptly sends relevant escape safety signals to the trapped person's mobile app, providing a relatively accurate and safe escape plan. This ensures that trapped individuals can escape the fire area in a timely and relatively safe manner during high-rise building fires, and also prevents them from recklessly attempting to break out and causing danger. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the floor locations in a high-rise building during a fire, as described in this invention.

[0025] Figure 2 This is a schematic diagram showing the installation of the early warning monitoring box in the stairwell of the present invention and the fire situation after a fire occurs.

[0026] Figure 3 This is a schematic diagram of the early warning monitoring box (the heat-deformed metal sheet is not deformed) in this invention.

[0027] Figure 4 This is a schematic diagram of the early warning monitoring box (after the thermal deformation metal sheet has deformed) in this invention.

[0028] Figure 5 This is a logic diagram of the circuit containing the temperature sensor, smoke concentration sensor, and air intake fan in this invention.

[0029] Figure 6 This is a schematic diagram illustrating the display of fire and escape status by a mobile app during a fire, as described in this invention.

[0030] Among them: 1-early warning monitoring box, 101-thermal contact cavity, 1011-heat-conducting block, 1012-thermal deformation metal sheet, 1013-contact conductive sheet, 102-main control board, 103-heat insulation pad, 104-airflow cavity, 105-intake fan, 106-exhaust port, 107-temperature sensor, 108-smoke concentration sensor, 109-time relay module, 110-charging power supply. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] Example 1: This invention relates to a fire escape early warning and monitoring device for high-rise buildings, the main structure of which is as follows:

[0033] Please see Figure 1 When a fire occurs in a high-rise building, it can be generally divided into three main areas: the fire floor area, the safe escape floor area below the fire floor area, and the risk escape floor area above the fire floor area. After a fire is detected in the safe escape staircase, people in the safe escape floor area can quickly escape by descending the staircase. The escape risks in both the fire floor area and the risk escape floor area need to be considered.

[0034] Please see Figure 2 , Figure 3 Each floor of the stairwell in the high-rise building is equipped with an early warning monitoring box 1. The outer surface of the early warning monitoring box 1 is coated with a layer of fireproof material, and the box body adopts a double-layer heat insulation structure to ensure that the early warning monitoring box 1 will not be easily damaged in the event of a fire, and to provide reference information to the cloud system for real-time monitoring of the fire situation in the current floor stairwell area. The early warning monitoring box 1 includes a thermal contact cavity 101, a main control board 102 fixedly installed adjacent to the thermal contact cavity 101, and an airflow cavity 104. The main control board 102 is equipped with a temperature sensor 107 and a smoke concentration sensor 108 that extend into the airflow cavity 104. An air intake fan 105 is installed at one port of the airflow cavity 104, and an exhaust port 106 is formed at the other port of the airflow cavity 104. A heat insulation pad 103 is wrapped around the main control board 102, and the temperature sensor 107 and the smoke concentration sensor 108 penetrate the heat insulation pad and are exposed in the airflow cavity 104.

[0035] A switching circuit is provided between the charging power supply 110 and the external power line. When the temperature sensor 107 detects that the temperature has reached the system's preset abnormal high temperature parameter, the main control board 102 controls the switching circuit to disconnect the electrical connection between the charging power supply 110 and the external power line. Under normal circumstances, when the charging power supply 110's charge is below half, the external power line charges the charging power supply 110 until it is fully charged. This ensures that the device has sufficient power to guarantee its continuous operation in the event of a fire.

[0036] Please see Figure 3 , Figure 4 The thermal contact cavity 101 contains a heat-conducting block 1011 with at least one side exposed to the outside. The heat-conducting block 1011 is fixedly connected to a heat-deformable metal sheet 1012. When heated, the heat-conducting block 1011 quickly transfers heat to the heat-deformable metal sheet 1012. The heat-deformable metal sheet 1012 is normally bent. A contact conductive sheet 1013, which matches the position of the heat-deformable metal sheet 1012, is fixedly installed in the thermal contact cavity 101. The heat-deformable metal sheet 1012 and the contact conductive sheet 1013 are normally disconnected. After the heat-deformable metal sheet 1012 is heated and deformed, it presses against the contact conductive sheet 1013. The heat-deformable metal sheet 1012 deforms when heated, maintaining a certain pressure in contact with the contact conductive sheet 1013, which can prevent poor contact between the heat-deformable metal sheet 1012 and the contact conductive sheet 1013. The heat-deformable metal sheet 1012 and the contact conductive sheet 1013 are connected to the built-in circuit of the main control board 102.

[0037] Please see Figure 3 , Figure 4 , Figure 5The heat-deformable metal sheet 1012 and the contact conductive sheet 1013 are both connected to the main circuit of the charging power supply 110. The temperature sensor 107 and the smoke concentration sensor 108 form parallel branches. The temperature sensor 107 and the smoke concentration sensor 108 are connected in parallel in the electrical circuit of the main control board 102. The main control board 102 has a built-in time relay module 109. The intake fan 105 and the time relay module 109 are connected in series in the electrical branch where the smoke concentration sensor 108 is located. When the smoke concentration sensor 108 detects that the smoke concentration is very low or there is no smoke, the time relay module 109 is activated. If the smoke concentration sensor 108 does not detect smoke in the airflow within a certain period of time, the time relay module 109 disconnects the circuit, and the intake fan 105 and the smoke concentration sensor 108 stop working. The main control board 102 has a built-in charging power supply 110, a wireless module, and an encoding module. The charging power supply 110 is connected to an external power line. If the external power line fails, the charging power supply 110 of the main control board 102 will provide power independently. The wireless module transmits real-time monitoring information to the cloud system. The encoding module stores the floor location of the current early warning monitoring box. When the wireless module transmits information, it also includes the floor location information stored in the encoding module, which facilitates the cloud system's analysis of the real-time fire situation in the high-rise building.

[0038] Please see Figure 6 The image shows the fire and escape status information displayed by the mobile APP in this invention when a fire occurs. The image shows the information of the trapped residents, the floor information of the fire, the longest safe escape time, and the corresponding escape suggestions. After a fire occurs, this page will be automatically displayed as long as the APP is opened, and the escapee can quickly escape according to the escape suggestions of the mobile APP.

[0039] Example 2: This invention relates to a fire escape early warning method for high-rise buildings. The specific early warning method is as follows:

[0040] First, the cloud system obtains the location information of the early warning monitoring boxes 1 in each floor area of ​​the high-rise building's stairwells based on the encoding module in the early warning monitoring box 1, denoted as [S1, S2, S3, ..., S...]. n ].

[0041] When a fire occurs in a high-rise building, the early warning monitoring box 1 in each floor area of ​​the stairwell begins to monitor the real-time fire situation: in the stairwell area where the fire occurs, the heat-conducting block 1011 of the early warning monitoring box 1 transfers heat to the heat-deformed metal sheet 1012. The heat-deformed metal sheet 1012 deforms due to heat and makes contact with the contact conductive sheet 1013. The temperature sensor 107, the smoke concentration sensor 108, and the air intake fan 105 are turned on at the same time.

[0042] Then, the intake fan 105 draws outside airflow into the airflow chamber 104. The temperature sensor 107 of the early warning monitoring box 1 monitors the real-time airflow temperature, denoted as Wx, and the smoke concentration sensor 108 of the early warning monitoring box 1 monitors the real-time smoke concentration, denoted as Kx. The early warning monitoring box 1 then transmits the real-time airflow temperature and smoke concentration information to the cloud system via a wireless module. Simultaneously, the early warning monitoring box 1 transmits the floor location information Sx pre-stored in the encoding module to the cloud system via the wireless module.

[0043] Then, the cloud system obtains the real-time floor where the fire occurred in the high-rise building, and sends the floor location information to the corresponding mobile app. The floor location where the fire occurred is denoted as [S]. X S X+1 S X+2 S X+m The system sends information about floors from which escape via stairs to the mobile app, denoted as [S1, S2, S3, ..., S...]. X-1 ].

[0044] This invention utilizes a cloud system to conduct the following analysis, focusing on the floors above the area where a fire has already occurred:

[0045] First, the cloud system presets a normal airflow temperature value Wo. The cloud system then analyzes the temperature safety factor ε for each floor in the event of a fire. The temperature safety factor f(ε) ∝ f -1 (W X -W O ), 0≤f(ε)≤1, to obtain the temperature safety factor for each floor where the fire occurs: [f(ε) X ), f(ε X+1 ), f(ε X+2 ), ..., f(S) X+m The cloud system analyzes the smoke concentration safety factor λ for each floor where the fire occurred, and the smoke concentration safety factor f(λ)∞f -1 (K X ), 0≤f(λ)≤1, to obtain the safety factor of smoke concentration on each floor where the fire occurred: [f(λ) X ), f(λ X+1 ), f(λ X+2 ), ..., f(λ) X+m )).

[0046] Second, the cloud system presets a maximum safe evacuation time t in the event of a fire on a single floor. SWhen a fire is not severe, adults can safely and quickly pass through shelters. This method is applied to single-floor fire scenarios. Although there may be some flames on that floor, adults can use shelters to block the flames and escape the floor relatively safely and quickly. Of course, evacuation must be swift and decisive; otherwise, if the fire intensifies, it will pose a significant danger. Therefore, in the event of a fire, even if it is small, evacuation must be swift. Hence, the cloud system presets a maximum safe evacuation time t. S Therefore, there exists a maximum safe time to leave the floor where the fire occurred:

[0047] t max ={min[f(e X ), f(λ X )]+min[f(ε X+1 ), f(λ X+1 )]+...+min[f(ε X+m ), f(λ X+m )]}·t s .

[0048] In essence, the minimum value is taken from the temperature safety factor and the smoke concentration safety factor monitored on each floor. This is used to calculate the maximum safe escape time. Normal human beings cannot stay in a fire area for a long time because the smoke and high temperature generated in the fire area will cause great harm to the human body. To escape relatively safely, it is necessary to quickly leave the fire area within a certain period of time. Therefore, the maximum safe time to leave the fire floor is calculated by adding the factors with the smaller safety factor.

[0049] Third, by monitoring the airflow temperature and smoke concentration in real time through the early warning monitoring boxes 1 at each floor, the cloud system obtains real-time information on the continuous spread of fire within the high-rise building and acquires the upward spread speed V1 of the fire. For example, if a fire occurs on the 9th floor, the early warning monitoring box 1 on the 9th floor detects the fire. Then, 3 minutes later, the early warning monitoring box 1 on the 10th floor detects the fire, and 3 minutes and 40 seconds later, the early warning monitoring box 1 on the 11th floor detects the fire. Thus, the upward spread speed of the fire can be taken as the maximum value of 3 minutes and 40 seconds or the average value of 3 minutes and 20 seconds.

[0050] The cloud system accumulates the total stair travel distance of the floors where the fire occurred. Let m+1 be the number of consecutive floors where the fire occurred, and L be the total stair travel distance of the floors where the fire occurred. z = (m+1)·L D , where L D This refers to the stair travel distance for a single floor.

[0051] The cloud system presets the human body's descent speed on the stairs to be V. RThe descent speed can be calculated based on the normal descent speed of an adult. If the phone is used by an elderly user, they can enter their age, and the system will use big data to determine the appropriate descent speed for that age group. Generally, the older the user, the slower their descent speed. Trapped individuals can enter their current floor location (S) into the mobile app. Z Where Z > X + m. The cloud system analyzes the floor location S. Z Location S of the highest floor where the fire is currently taking place X+m Total stair travel L between c =(ZXm)·L D The time interval between the trapped personnel encountering the upward-rushing fire during their descent is t1 = L. C / (V R -V1). The total travel distance of the staircase where the fire occurred when trapped personnel encountered a fire while escaping downhill is L. H =L Z +V1·t1. The minimum time taken for trapped personnel to escape from the fire zone during their descent is t. min =L H / V R .

[0052] Fourth, the cloud system determines the minimum time t required to move away from the fire zone. min The longest safe time t to leave the floor where the fire occurred max The system measures the size of the device and sends corresponding escape signals to the survivor's mobile app, providing a more accurate and effective escape reference. The specific details are as follows:

[0053] Scenario 1: If t min <t max The cloud system then sends a signal to the survivor's mobile app stating that "the survivor can escape as soon as possible via the stairs."

[0054] Scenario 2: If t min ≥t max The cloud system then sends a signal to the survivor's mobile app stating, "Going downhill to escape is dangerous. Please go uphill to find a safe area and wait for rescue."

[0055] In addition, when the mobile APP involved in this invention is opened and run for the first time, the user needs to use the current geographical location information by default, and at the same time, the user needs to enter the address information of the high-rise building where they live and the floor information of their residence in the mobile APP.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fire escape early warning method for high-rise building fires, characterized by: Step 1. The cloud system obtains the location information of the early warning monitoring boxes (1) in each floor area of ​​the high-rise building's stairwells based on the encoding module in the early warning monitoring box (1), and records it as follows: ; Section 2. When a fire occurs in a high-rise building, the early warning monitoring box (1) in each floor area of ​​the stairwell begins to monitor the real-time fire situation: In the stairwell area where the fire occurs, the heat-conducting block (1011) of the early warning monitoring box (1) transfers heat to the heat-deformed metal sheet (1012), the heat-deformed metal sheet (1012) deforms due to heat and contacts the contact conductive sheet (1013), and the temperature sensor (107), smoke concentration sensor (108) and air intake fan (105) are turned on at the same time. Step 3. The intake fan (105) draws the outside airflow into the airflow chamber (104). The temperature sensor (107) of the early warning monitoring box (1) monitors the real-time airflow temperature, denoted as Wx. The smoke concentration sensor (108) of the early warning monitoring box (1) monitors the real-time smoke concentration, denoted as Kx. The early warning monitoring box (1) transmits the real-time airflow temperature and smoke concentration information to the cloud system through the wireless module. At the same time, the early warning monitoring box (1) transmits the floor location information Sx pre-stored in the encoding module to the cloud system through the wireless module. Step 4. The cloud system obtains the real-time location of the fire on the floor in the high-rise building and sends this location information to the corresponding mobile app. The location of the fire is recorded as follows: It also sends floor information for direct escape via stairs to the mobile app, which is recorded as follows. ; Step 5. For floors above the area where a fire has already occurred, the cloud system performs the following analysis: First, the cloud system presets a normal airflow temperature value Wo. The cloud system then analyzes the temperature safety factor ε for each floor in the event of a fire. , The temperature safety factors for each floor where the fire occurred are obtained: ; The cloud system analyzes the smoke concentration safety factor λ for each floor where a fire occurred. , The safety factor for smoke concentration on each floor where the fire occurred is obtained: ; Second, the cloud system presets a maximum safe evacuation time t in the event of a fire on a single floor. S Therefore, there exists a maximum safe time to leave the floor where the fire occurred: ； Third, by monitoring the airflow temperature and smoke concentration in real time through the early warning monitoring boxes (1) at each floor, the cloud system can obtain the status information of the continuous spread of fire in the high-rise building in real time and obtain the speed of the fire spreading upward V1. The cloud system accumulates the total stair travel distance of the floors where the fire occurred. Let m+1 be the number of consecutive floors where the fire occurred, and let m+1 be the total stair travel distance of the floors where the fire occurred. , where L D For a single floor, the stair travel distance is [number]. The cloud system presets the human body's descent speed on the stairs to be V. R Trapped individuals can enter their current floor location (S) into the mobile app. Z Where Z > X + m; Cloud system analyzes floor location S Z Location S of the highest floor where the fire is currently taking place X+m Total stair travel between The time interval between the trapped personnel encountering the upward-rushing fire during their descent was obtained as follows: ; The total travel distance of the staircase where the fire occurred when trapped personnel encountered a fire while escaping downhill was: ; The minimum time required for trapped personnel to escape from the fire to leave the fire zone is: ; Fourth, the cloud system determines the minimum time t required to move away from the fire zone. min The longest safe time t to leave the floor where the fire occurred max The size of the signal is determined, and a corresponding escape signal is sent to the survivor's mobile app: if t min <t max The cloud system then sends a signal to the survivor's mobile app stating "Escape as quickly as possible via the stairs"; if t min ≥t max The cloud system then sends a signal to the survivor's mobile app: "Going downhill to escape is too dangerous. Please go uphill to find a safe area and wait for rescue." 2. The fire escape early warning method for high-rise building fires according to claim 1, characterized in that: When the mobile app is first opened and run, users are required to use their current location information by default, and also need to enter the address of their high-rise building and the floor they live on in the app.

3. A fire escape early warning and monitoring device for high-rise buildings, used to implement the fire escape early warning method for high-rise buildings as described in any one of claims 1 to 2, characterized in that: Each floor area of ​​the staircase in a high-rise building is equipped with an early warning monitoring box (1). The early warning monitoring box (1) includes a thermal contact cavity (101) and a main control board (102) fixedly installed in the adjacent position of the thermal contact cavity (101). The early warning monitoring box (1) is also provided with an airflow cavity (104). The main control board (102) is equipped with a temperature sensor (107) and a smoke concentration sensor (108) that extend into the airflow cavity (104). An intake fan (105) is installed on one side of the airflow chamber (104), and an exhaust port (106) is formed on the other side of the airflow chamber (104). The thermal contact cavity (101) has a heat-conducting block (1011) with at least one side exposed to the outside. The heat-conducting block (1011) is fixedly connected to a heat-deformable metal sheet (1012). The heat-deformable metal sheet (1012) is normally curved. The thermal contact cavity (101) is fixedly installed with a contact conductive sheet (1013) that matches the position of the heat-deformable metal sheet (1012). The heat-deformable metal sheet (1012) and the contact conductive sheet (1013) are connected to the built-in circuit of the main control board (102). The temperature sensor (107) and the smoke concentration sensor (108) are connected in parallel in the electrical circuit of the main control board (102). The main control board (102) has a built-in time relay module (109). The air intake fan (105) and the time relay module (109) are connected in series in the electrical branch where the smoke concentration sensor (108) is located. The main control board (102) has a built-in charging power supply (110), a wireless module and an encoding module, and the charging power supply (110) is connected to an external power line.

4. The high-rise building fire escape early warning and monitoring device according to claim 3, characterized in that: The main control board (102) is surrounded by a heat insulation pad (103), and the temperature sensor (107) and smoke concentration sensor (108) penetrate the heat insulation pad and are exposed in the airflow cavity (104).

5. The high-rise building fire escape early warning and monitoring device according to claim 3, characterized in that: The heat-deformable metal sheet (1012) and the contact conductive sheet (1013) are normally disconnected. After being heated and deformed, the heat-deformable metal sheet (1012) is pressed into contact with the contact conductive sheet (1013).

6. The high-rise building fire escape early warning and monitoring device according to claim 3, characterized in that: A switching circuit is provided between the charging power supply (110) and the external power line; Under normal circumstances, when the power of the charging power supply (110) is less than half, the external power supply line charges the charging power supply (110) until the power of the charging power supply (110) is fully charged.

7. The high-rise building fire escape early warning and monitoring device according to claim 3, characterized in that: The outer surface of the early warning monitoring box (1) is coated with a layer of fireproof material, and the box body of the early warning monitoring box (1) adopts a double-layer heat insulation structure.

Images