Indoor early fire origin extinguishing device and early warning method thereof

Abstract

The present invention relates to an indoor early-stage fire origin extinguishing device and its early warning method. The device comprises a wall panel and a ceiling panel, a first infrared temperature sensing system for covering the wall surface and a second infrared temperature sensing system for the wall ceiling, respectively; a rotatable multi-head sprinkler system with adjustable pitch angles for each sprinkler; each sprinkler head is connected to a water outlet pipe, multiple solenoid valves provided on a main water pipe, and a control and analysis circuit. The control and analysis circuit is capable of analyzing the directional distribution of the indoor temperature based on first and second data collected from the first and second infrared temperature sensing systems, respectively, and is capable of reconstructing the three-dimensional directional distribution of the indoor temperature and transmitting it to a user's mobile smart terminal. The present invention also relates to an indoor early-stage fire origin early warning method using the fire extinguishing device, which achieves real-time detection of indoor temperature distribution and accurate water spraying at temperature distribution points, thereby improving the efficiency and timeliness of fire prevention.

Description

Technical Field

[0001] The invention relates to an indoor early-stage fire origin extinguishing device and an early warning method thereof, in particular to monitoring of indoor early-stage fire origins, and belongs to the field of fire monitoring. Background Art

[0002] Indoor fires originate from both human and non-human sources, all of which are caused by human activity. Therefore, some indoor locations are prone to fire. Existing solutions use image learning, smoke, and temperature sensor data to determine whether a fire has occurred. However, these learning methods can only effectively identify a fire after it has progressed to a certain stage, failing to monitor its early stages. This is because it is impossible to guarantee detection of every corner of the room. Response can only be initiated when the fire reaches the detection area, by which time the fire has already begun and may even be too late. Furthermore, image acquisition devices are typically used in public places and are not recommended for indoor use due to privacy concerns.

[0003] Furthermore, existing sprinklers simply spray in all directions without any specific targeting. This can lead to damage to areas indoors that shouldn't be sprayed, particularly computers and documents in offices. Mobile sprinklers have emerged as a solution to this problem. However, their backpack water tanks have a small capacity, and their range of movement may not be the fire's origin or the initial impact area. This means the spraying is likely to be blind or even ineffective. Sensors also have a limited recognition capability and are unable to provide accurate and timely sensing. Therefore, ensuring accurate coverage of vulnerable areas and timely identification are key to effectively and efficiently containing disasters. Summary of the Invention

[0004] Based on the above-mentioned issues, the present invention proposes several solutions to thoroughly address them. First, starting with the indoor building structure, temperature, smoke, and gas sensors are scientifically and rationally deployed. Each sensor is assigned precise coordinates, establishing spatial relationships between devices. Second, by analyzing and intelligently determining real-time sensor data, combined with infrared detection, early warnings of fire hazards are provided. Sprinklers can automatically target fire points. Because fires originate early, a warning-first, decision-making approach is adopted. Rather than spraying water immediately upon encountering the necessary conditions, under certain conditions, humans are given the ability to proactively respond and choose appropriate measures. This avoids blind spraying and prevents false triggering due to overly sensitive sensors, such as those caused by a cigarette or gas appliance. Third, a fire extinguishing device is designed that automatically triggers the device based on analysis of sensor data. The temperature sensor head and accompanying sprinkler head are redesigned.

[0005] In view of the above considerations, the present invention provides an indoor early fire source extinguishing device, comprising a wall panel and a top panel, respectively used to cover a first infrared temperature sensing system on the wall surface and a second infrared temperature sensing system on the top of the wall.

[0006] A multi-head sprinkler system that is rotatable and has adjustable pitch angles for each sprinkler. Each sprinkler is connected to a water outlet pipe that is connected to multiple solenoid valves installed on the main water pipe to control the water outlet and water flow rate of each sprinkler, as well as,

[0007] A control and analysis circuit, wherein the control and analysis circuit can control the spatial topological structure of the layout of the first infrared temperature sensing system and the second infrared temperature sensing system, control the rotation and the pitch angle of the multi-head nozzle system, and control each of the solenoid valves, and analyze the directional distribution of the indoor temperature based on the first data and the second data collected by the first infrared temperature sensing system and the second infrared temperature sensing system, and can reconstruct the three-dimensional directional distribution of the indoor temperature and send it to the user's mobile smart terminal.

[0008] It's important to emphasize that the directional distribution of indoor temperature here refers to the temperature distribution within the direction detected by the first infrared temperature sensing system and the second infrared temperature sensing system. The temperature detected in a detection direction exists in that direction, but it does not necessarily indicate the temperature detected at every spatial point in that direction. Therefore, if a temperature anomaly occurs, the user can identify the possible fire source or sources in those directions without having to precisely identify the fire source. Simply viewing the 3D reconstructed directional temperature distribution is sufficient.

[0009] Among them, the first infrared temperature sensing system and the second infrared temperature sensing system both include multiple multi-head infrared sensors arranged on the indoor walls and wall tops according to fire history data, and a two-dimensional moving pair for realizing two-dimensional movement of the multiple multi-head infrared sensors on the walls and wall tops. The wall panels and the top panels have hollows corresponding to the two-dimensional movement of each multi-head infrared sensor, so that the multi-head infrared sensors are exposed to the air outside the wall panels and the top panels.

[0010] Optionally, each of the multi-head infrared sensors includes multiple infrared sensors and is equipped with a wireless transmission module for collecting data from each infrared sensor head on the multi-head infrared sensor into the control and analysis circuit. The two-dimensional moving pair comprises a rectangular frame, a first screw mechanism arranged on the edge of the rectangular frame, and multiple movable rods arranged in a direction perpendicular to the rectangular frame edge and across the rectangular frame edge and its opposite parallel edge. Each movable rod is provided with multiple brackets for fixing the multi-head infrared sensor, and each bracket fixes a multi-head infrared sensor. The first screw mechanism drives the movable rod to move along the edge of the rectangular frame. The movable rod is provided with a second screw mechanism for driving the bracket to move in the vertical direction on the movable rod. Rotary encoders are installed at the output ends of the motors in the first screw mechanism and the second screw mechanism. The control and analysis circuit collects the rotary encoder signals to obtain the coordinate positions of each infrared sensor on the wall and the top of the wall. Specifically, the coordinates of one infrared sensor in each multi-head infrared sensor can be calibrated in advance, and then analyzed based on the relative position layout of the multiple infrared sensors in the multi-head infrared sensor.

[0011] It is understood that after removing the wall and roof panels, the relative spacing between the multiple brackets on the movable rod can be adjusted, thereby adjusting the detection range topology. If there is a large hollow area, the relative spacing can be adjusted directly using the hollow operating space. In cases where the relative spacing can be successfully adjusted using the hollow operating space, the hollow area is considered large.

[0012] Preferably, the detection directions of the multiple infrared sensors are different, and the detection directions are sequentially distributed in a fan-shaped arc direction.

[0013] Preferably, the detection directions of the plurality of infrared sensors are adjustable.

[0014] It should be emphasized that the detection range of an infrared sensor is a solid angle, and the detection direction is the direction of the ray starting from the vertex of the solid angle and perpendicular to the detection surface.

[0015] Optionally, the two-dimensional motion range is positioned based on the fire history data in the same type of room, and is readjusted as the fire history data is accumulated.

[0016] It's easy to understand that fires can occur in different locations within the same indoor space, such as kitchens, living rooms, bedrooms, studies, dining rooms, and balconies. For example, a bedroom's bed is more likely to be located in the center of the room. Therefore, we adjust the two-dimensional movement of the multi-head infrared sensor to always focus on the center. If a user habitually smokes near a window, there may be historical fire data near the window. Therefore, we can appropriately select several multi-head infrared sensors and move them two-dimensionally to positions close to the window. Due to the fan-shaped detection direction, a large number of multi-head infrared sensors are not needed to cover the fire point.

[0017] Optionally, the multi-head sprinkler system is arranged on the ceiling at a density of one sprinkler per 10-15 square meters in the room, and includes a plurality of sprinklers, a bearing-type base detachably connected to the wall top, a hollow sleeve rod, a rack rod, a sprinkler bracket fixedly connected to the hollow sleeve rod, a rotating motor, and a lifting motor, wherein:

[0018] The bearing-type base includes an inner ring and an outer ring. The inner ring is detachably fixedly connected to the top of the wall. The bottom of the outer ring is detachably extended from the hollow sleeve rod. The rack rod is liftably sleeved in the hollow sleeve rod, and a hanging spring is fixedly connected between the top of the rack rod and the inner wall of the hollow sleeve rod. The nozzle bracket includes a ring ring and a nozzle seat that can be pitched and rotated on the ring ring. The ring ring is fixedly connected to the hollow sleeve rod by a spring or a connecting rod (which can be detachable).

[0019] The outer surface of the rack rod is provided with a straight rack whose number is one more than the number of the multiple nozzles. Each of the nozzle seats is provided with an arc-shaped rack near the rotating axis of the hollow sleeve rod. The arc-shaped rack is meshed with the corresponding straight rack, and the remaining straight rack is meshed with the second driving gear at the output end of the lifting motor. The rack rod is driven by the lifting motor to move up and down, thereby driving all the arc-shaped racks as a whole to adjust the pitch angle during the movement. The lifting motor bracket is detachably provided on the hollow sleeve rod, and the lifting motor is detachably fixed on the lifting motor bracket. The lifting motor can be switched forward and reverse so that all the The nozzle installed on the nozzle seat can swing back and forth near the set pitch angle, and the rotating motor is detachably fixed by a rotating motor bracket detachably connected to the wall top. The side of the outer ring has a circumferential gear that meshes with the first driving gear on the output end of the rotating motor. The rotating motor drives the outer ring to rotate, causing the hollow sleeve rod, rack rod, nozzle bracket, lifting motor bracket, and lifting motor to rotate as a whole. Rotary encoders are installed on the output ends of the rotating motor and the lifting motor, and the horizontal coordinate position of each nozzle seat is obtained respectively by collecting the rotary encoder signal through the control and analysis circuit.

[0020] It's easy to understand that the hanging spring not only serves as a suspending fixture for the rack rod but also triggers the spring's compression and extension switching during forward and reverse rotation. Without the swing mechanism, the lift motor would likely continuously output static torque to overcome the spring's elastic force and maintain a stable pitch angle, potentially overheating the motor. However, the forward and reverse switching mechanism allows the motor to remain operational, preventing heat and expanding the pitch spray range. The multiple nozzles eliminate the need for large-angle rotation, and the nozzle outlet piping avoids excessive kinking, entanglement, or disconnection due to large-angle rotation.

[0021] Preferably, the lifting motor and the rotating motor are both servo motors that are wirelessly remotely controlled by the control and analysis circuit to switch the rotation and reversal.

[0022] Another aspect of the present invention provides a method for early warning of indoor fire origins, comprising the following steps:

[0023] S1 collects historical data of various indoor fires and records the relative coordinates of the fire locations in the room;

[0024] S2 uses clustering method to count the coordinate distribution of fire locations in various indoor areas;

[0025] S3 connects multiple cluster center points to form multiple triangles or multiple polygons, selects a point within the multiple triangles or multiple polygons, installs the first infrared temperature sensing system and / or the second infrared temperature sensing system, so that the detection direction of the multiple infrared sensors can cover the points within all triangles or multiple polygons, and sets a multi-head sprinkler system at the projection position of the top of the wall of the point, so that one multi-head sprinkler system is set for every 10-15 square meters in the room;

[0026] S4 monitors the indoor temperature in a detection direction and periodically moves multiple infrared sensors in two dimensions (i.e., periodically moves multiple infrared sensors in two dimensions). The control and analysis circuit collects the first data and the second data, analyzes the directional distribution of the indoor temperature, and is able to reconstruct the three-dimensional directional distribution of the indoor temperature and transmit it to the user's mobile smart terminal. When at least one infrared sensor senses a temperature exceeding the standard of 70-100°C in the detection direction, an alarm is issued on the user's mobile smart terminal. The user is then required to determine whether a disaster has occurred. If the user does not determine the alarm before a specified time arrives, the control and analysis circuit calculates the one or more nozzle seats that need to be rotated to the minimum angle and the pitch angle based on the coordinate position of the infrared sensor that detected the temperature exceeding the standard and the current position of each nozzle seat in the multi-head nozzle system. After controlling the one or more nozzle seats to rotate to the desired position, the pitch angle is adjusted according to the calculated pitch angle, and the one or more nozzle seats are controlled to swing around the pitch angle. The solenoid valve connected to the water outlet pipe corresponding to the nozzle seat is controlled to spray water. Before the specified time arrives, the water spraying operation is determined to be performed. If the user does not determine the alarm, the alarm is cleared.

[0027] Preferably, the periodicity includes every 1 minute to 1 hour, the two-dimensional movement includes selecting the order of movement between the horizontal moving rod and the vertical moving bracket, with the temperature exceeding 80-90°C as the standard, the specified time includes 20 seconds to 4 minutes, and the first data and the second data are collected to analyze the directional distribution of the indoor temperature, and the three-dimensional directional distribution of the indoor temperature can be reconstructed, and the frequency of sending it to the user's mobile smart terminal is once every day to once every week.

[0028] Preferably, if the multiple infrared sensors continue to detect a temperature drop in the detection direction within 10s-30s after spraying water, the water spraying is suspended and the user is prompted to move the smart terminal to continue spraying water. If the user confirms yes, the water spraying continues; otherwise, the water spraying is terminated.

[0029] Beneficial effects

[0030] 1. Set up two-dimensional moving multi-head infrared sensors on the wall and wall top to detect the indoor temperature distribution in real time and reconstruct the three-dimensional temperature distribution for users to view.

[0031] 2. The multi-head sprinkler with adjustable rotation and pitch angle is used to achieve accurate water spraying at the temperature distribution point.

[0032] 3. The use of control and analysis circuits for fully automatic real-time monitoring greatly improves the efficiency and timeliness of fire prevention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic diagram of the structure of the first infrared temperature sensing system and the second infrared temperature sensing system of an indoor early-stage fire extinguishing device according to Example 1 of the present invention, wherein a is a front view, b is a left side view, c is an array of multi-head infrared sensors, and d is a large hollow embodiment on another wall panel or ceiling.

[0034] Figure 2 Schematic diagram of the structure of a multi-head sprinkler system of an indoor early-stage fire extinguishing device according to embodiment 1 of the present invention, a is a front view, b is a top view,

[0035] Figure 3 Partially reconstructed three-dimensional distribution of indoor temperature, as well as a schematic diagram of the installation positions of the multi-head infrared sensor and multi-head sprinkler system.

[0036] Figure 4 Clustering and sum of steps S2 and S3 in the method for monitoring the origin of indoor early fires by the indoor early fire extinguishing device of embodiment 1 of the present invention Figure 3 Schematic diagram of installation location selection method,

[0037] Figure 5 Logic diagram of water spraying in step S4 of the method for monitoring indoor early fire origins by the indoor early fire origin extinguishing device according to embodiment 1 of the present invention. DETAILED DESCRIPTION

[0038] Example 1

[0039] This embodiment will illustrate a fire extinguishing device. Figure 2 The present invention provides an indoor early fire extinguishing device, including: Figure 1aThe wall panels and the top panels are respectively installed on the wall and the top of the wall to cover the first infrared temperature sensing system and the second infrared temperature sensing system. A rectangular frame is installed on the wall and the top of the wall, and a first screw mechanism is installed on one side of the rectangular frame, and a movable rod is installed across the side and the other opposite side. A second screw mechanism is installed on the movable rod. The first screw mechanism and the second screw mechanism are respectively controlled by servo motors to move the movable rod along the side ( Figure 1a x direction in the coordinate system oxy), and the bracket set on the control rod moves along the direction perpendicular to the translation direction ( Figure 1a Move in the y direction of the coordinate system oxy.

[0040] Multiple infrared sensors are installed on the bracket. Figure 1b for Figure 1a Left side view of the wall panel (taking the wall panel as an example). Figure 1c The left image in the middle shows the structure of the 2×3 infrared sensor array of the multi-head infrared sensor; the right image shows the left side view of the multi-head infrared sensor, and the detection direction of the fan-shaped arc direction, thus forming a detection range of one row of fans under the viewing angle, and two rows forming a detection range that is approximately a cone (see Figure 3 ).

[0041] For example Figure 1a As shown, the wall panels and the top panels provide a cross hollowing for the two-dimensional movement of the multi-head infrared sensor provided on the bracket. In another embodiment, the hollowing is also arranged as follows Figure 1d A wide range of perforations to provide Figure 1a The four movable rods can be adjusted in a wider range of positions, and the bracket can move in a wider range of vertical directions. Figure 1d In the scenario, due to the large hollow range, there is enough operating space to adjust the three brackets on each moving rod (as shown in Figure 1a The relative positions (as shown) of the two screws, i.e., the spacing, are determined. Specifically, the second screw mechanism is removed, adjusted, and then reinstalled. Specifically, the screw is threaded through the movable nuts or sliders on the three brackets according to the adjusted position, and then the motor and screw are connected. Finally, the motor is secured to the moving rod.

[0042] The indoor early fire origin extinguishing device also includes a multi-head sprinkler system that can rotate as a whole and each sprinkler has an adjustable pitch angle, as well as a control and analysis circuit (not shown in the figure, which can be specifically set in a remote machine room or a control room in an underground garage).

[0043] The output ends of the motors in the first and second screw mechanisms are connected to rotary encoders, which communicate with the control and analysis circuit (wirelessly or wiredly) to enable the control and analysis circuit to obtain the spatial position data of each multi-head infrared sensor. Figure 1c As shown, the multi-head infrared sensor is provided with a wireless transmission module for realizing the communication.

[0044] Figure 2 a is a schematic diagram of the specific structure of the multi-head nozzle system, which shows that the multi-head nozzle system includes: 6 ( Figure 2 b) An example of a nozzle among nozzles distributed at equal intervals, a bearing-type base detachably connected to a wall top, a hollow sleeve rod, a rack rod, a nozzle bracket fixedly connected to the hollow sleeve rod, a rotating motor, and a lifting motor, wherein:

[0045] The bearing-type base includes an inner ring and an outer ring. The inner ring is detachably fixed to the top of the wall. The bottom of the outer ring is detachably extended to form the hollow sleeve rod. The rack rod is liftably sleeved in the hollow sleeve rod, and a hanging spring is fixed between the top of the rack rod and the inner wall of the hollow sleeve rod. The specific fixing method is as follows: Figure 2 As shown in Figure a, two straight rods are used. The circled part in the figure can use a hook structure to hang the topmost coil of the hanging spring, and the same can be done on the inner wall of the hollow sleeve rod.

[0046] The nozzle bracket includes a ring ( Figure 2 a shows a partial cross section near one of the nozzle seats and a small partial section in the front view direction), as well as the nozzle seat that can be pitched and rotated on the ring. The ring is fixedly connected to the hollow sleeve rod through a connecting rod (specifically, it is fixedly connected to the Figure 2 a) on the slope of the conical funnel with a hollow sleeve.

[0047] The outer surface of the rack rod is provided with 7 straight racks. Each nozzle seat is provided with an arc rack near the rotating shaft of the hollow sleeve rod. The arc rack is engaged with the corresponding straight rack, and the remaining straight rack is engaged with the second driving gear at the output end of the lifting motor. The rack rod is driven by the lifting motor. Figure 2 The lifting movement indicated by the double straight arrows in a drives all the arc-shaped racks to adjust the pitch angle as a whole during the movement. The lifting motor bracket is detachably arranged on the hollow sleeve rod, and the lifting motor is detachably fixed on the lifting motor bracket. The lifting motor can be switched forward and reverse so that all the nozzles installed on the nozzle seat can move as shown in the figure near the set pitch angle. Figure 2 The double-arrowed swing indicated by a is detachably fixed to the wall by a rotating motor bracket detachably connected to the top of the wall. The side of the outer ring has a circumferential gear meshing with the first driving gear on the output end of the rotating motor. The rotating motor drives the outer ring to rotate, thereby causing the hollow sleeve rod, rack rod, nozzle bracket, lifting motor bracket, and lifting motor to rotate as a whole. The rotating motor and the output end of the lifting motor are both equipped with a rotary encoder ( Figure 2(a) The horizontal coordinate position of each nozzle seat is obtained by collecting the rotary encoder signal through the control and analysis circuit. The multi-head nozzle system is set at a density of one for every 12 square meters in the room.

[0048] like Figure 2 The electrode signal lines of the rotating motor and the lifting motor shown in a, and the rotary encoder signal line ( Figure 2 a) are connected to the wireless / battery module in the base to realize power supply and wireless acquisition of rotary encoder signals between the control and analysis circuits.

[0049] like Figure 2 As shown in Figure 2b, the nozzles are connected to the water outlet pipes. Six outlet pipes are connected to the main water pipe via six solenoid valves. The control and analysis circuitry of the solenoid valves allows the corresponding nozzles to produce a controlled water flow. The rotary motor only needs to rotate the nozzle base 60°, so the outlet pipes do not need to be too long. Further rotation (over 60°) will not cause the outlet pipes to twist or overstretch.

[0050] The control and analysis circuit also controls each of the solenoid valves, and analyzes the directional distribution of the indoor temperature based on the first data and the second data collected by the first infrared temperature sensing system and the second infrared temperature sensing system, and is able to reconstruct the three-dimensional directional distribution of the indoor temperature and send it to the user's mobile smart terminal. Figure 3 As shown, two walls and a wall top are given. Figure 1c The three-dimensional temperature distribution of the multi-head infrared sensor is shown. If the temperature of the flame exceeds the standard near the intersection of the detection directions of two of the infrared sensors, the spatial coordinates of the flame are obtained based on the data transmitted by the corresponding rotary encoder, and the control and analysis circuit drives the multi-head sprinkler system to rotate and adjust the pitch angle for precise water spraying.

[0051] Example 2

[0052] This embodiment provides a method for monitoring the origin of an indoor early-stage fire using the indoor early-stage fire extinguishing device of embodiment 1. The method specifically includes the following steps:

[0053] S1 collects historical data on six types of indoor fires: living room, bedroom, dining room, kitchen, study, and balcony, and records the relative coordinates of the fire locations within the room;

[0054] S2 uses clustering method to count the coordinate distribution of fire locations in various indoor areas. Figure 4 As shown, there are three types of fire-prone locations: I, II, and III, namely, beds, curtains, TV cabinets, or dressing tables;

[0055] S3 connects the three cluster center points A, B, and C to form two triangles, namely △ABC and △BCD. A point is selected at the height of BC and BD of the two triangles, and the first infrared temperature sensing system and the second infrared temperature sensing system are installed so that the detection directions of multiple infrared sensors can cover the two points. Therefore, the projection coordinates (x1, y1) and coordinates (x2, y2) of the two points on the wall can be satisfied. A multi-head sprinkler system is set at the projection position (x3, y3) of the point selected in △ABC on the top of the wall, so that a multi-head sprinkler system is set for every 12 square meters in the room. A multi-head infrared sensor in the second infrared temperature sensing system can also be set at (x3, y3) to cover the point selected at the height of BC, and a multi-head sprinkler system can be set near (x3, y3). Due to the two-dimensional movement of the multi-head sprinkler system and the multi-head infrared sensor, this small position deviation is tolerable, thus forming the following. Figure 3 The status after installation;

[0056] The S4 multi-head infrared sensor monitors the indoor temperature in the detection direction. Every 30 minutes, the multi-head infrared sensor moves in two dimensions. The control and analysis circuit collects the first and second data, analyzes the directional distribution of the indoor temperature, and reconstructs the three-dimensional directional distribution of the indoor temperature. This distribution is then sent to the user's mobile smart terminal. When the control and analysis circuit detects that the temperature sensed by at least one infrared sensor in the detection direction exceeds the standard of 90°C, an alarm is issued on the user's mobile smart terminal, allowing the user to confirm whether a disaster has occurred. Specifically, a dialog box pops up on the user's mobile smart terminal for the user to confirm.

[0057] Among them, reconstructing the three-dimensional directional distribution of indoor temperature and sending it to the user's mobile smart terminal, as well as obtaining the water spraying operation after at least one infrared sensor senses the temperature in the detection direction are multi-tasking, so the control and analysis circuit uses a multi-core multi-threaded processor.

[0058] like Figure 5 As shown in the figure, when the temperature exceeds the 90℃ standard, if it reaches the specified time of 30s and the user has not confirmed it, the control and analysis circuit will calculate the one or more nozzle seats and the pitch angle that need to be rotated to the minimum angle based on the coordinate position of the infrared sensor that detects the temperature exceeding the standard and the current position of each nozzle seat in the multi-head nozzle system. Figure 3 One of the nozzles is already aimed at the flame. At this time, the rotation angle is 0°. No rotation is required. Just adjust the pitch angle and swing it around the pitch angle (usually ±5°).

[0059] If the angle is calculated in the control and analysis circuit for the above nozzle, Figure 3 Taking the example of rotating 30° counterclockwise, there are two nozzles with a 30° deviation from the flame position, including the one nozzle and Figure 3The nozzle next to the left of the nozzle can be rotated 30 degrees clockwise to form the following Figure 3 position; you can also design the program to always calculate the angle in counterclockwise rotation. In this scenario, Figure 3 The nozzles adjacent to the left side of the nozzle aimed at the flame are aimed at the flame by 30 degrees counterclockwise. Of course, two nozzles adjacent to the nozzle aimed at the flame can also be started at the same time, so that the three nozzles spray water at the same time to expand the fire extinguishing range around the dry flame on the horizontal plane and further improve the fire extinguishing efficiency.

[0060] Furthermore, if the deviation from the flame position is 25°, then the deviation from the flame position of the nozzle adjacent to the left side of the nozzle is 60°-25°=35°. At this time, the control and analysis circuit selects the smallest clockwise rotation of 25° to form Figure 3 The position in.

[0061] After the control and analysis circuit controls the one or more nozzle seats to rotate into position, it adjusts the pitch angle according to the calculated pitch angle and controls the one or more nozzle seats to swing near the pitch angle, and controls the solenoid valve connected to the corresponding water outlet pipe of the nozzle seat to spray water; before the specified time arrives, it is determined to perform the above-mentioned water spraying operation. If it is not determined, the alarm is eliminated.

[0062] In addition, if the multiple infrared sensors continue to detect a temperature drop in the detection direction within 15 seconds after spraying water, the water spraying will be suspended, and the user will be prompted to move the smart terminal whether to continue spraying water. If the user confirms yes, the water spraying will continue; otherwise, the water spraying will be terminated.

Claims

1. An indoor early fire extinguishing device, characterized in that: It includes a wall panel and a top panel, which are used to cover the first infrared temperature sensing system on the wall surface and the second infrared temperature sensing system on the top of the wall. A multi-head sprinkler system that is rotatable and has adjustable pitch angles for each sprinkler. Each sprinkler is connected to a water outlet pipe and multiple solenoid valves installed on the main water pipe to control the water outlet and water flow of each sprinkler, as well as, A control and analysis circuit, wherein the control and analysis circuit can control the spatial topological structure of the layout of the first infrared temperature sensing system and the second infrared temperature sensing system, control the rotation and the pitch angle of the multi-head nozzle system, and control each of the solenoid valves, and respectively analyze the directional distribution of the indoor temperature based on the first data and the second data collected by the first infrared temperature sensing system and the second infrared temperature sensing system, and can reconstruct the three-dimensional directional distribution of the indoor temperature and send it to the user's mobile smart terminal. The first infrared temperature sensing system and the second infrared temperature sensing system each include a plurality of multi-head infrared sensors respectively arranged on the indoor walls and wall tops according to fire history data, and a two-dimensional moving pair for realizing two-dimensional movement of the multiple multi-head infrared sensors on the walls and wall tops. The wall panels and the ceiling panels have a hollow for each multi-head infrared sensor to move two-dimensionally, so that the multiple infrared sensors are exposed to the air outside the wall panels and the ceiling panels. The multi-head sprinkler system includes multiple sprinklers, a bearing-type base detachably connected to the wall top, a hollow sleeve rod, a rack rod, a sprinkler bracket fixedly connected to the hollow sleeve rod, a rotating motor, and a lifting motor; the bearing-type base includes an inner ring and an outer ring, the inner ring is detachably fixedly connected to the wall top, the bottom of the outer ring is detachably extended from the hollow sleeve rod, the rack rod is liftably sleeved in the hollow sleeve rod, and a hanging spring is fixedly connected between the top of the rack rod and the inner wall of the hollow sleeve rod, the sprinkler bracket includes a ring, and a sprinkler seat on the ring that can be pitched and rotated, the ring is fixedly connected to the hollow sleeve rod through a spring or a connecting rod, The outer surface of the rack rod is provided with a straight rack whose number is one more than the number of the multiple nozzles. Each of the nozzle seats is provided with an arc-shaped rack near the rotating axis of the hollow sleeve rod. The arc-shaped rack is meshed with the corresponding straight rack, and the remaining straight rack is meshed with the second driving gear at the output end of the lifting motor. The rack rod is driven by the lifting motor to move up and down, thereby driving all the arc-shaped racks as a whole to adjust the pitch angle during the movement. The lifting motor bracket is detachably provided on the hollow sleeve rod, and the lifting motor is detachably fixed on the lifting motor bracket. The lifting motor can be switched forward and reverse so that all the The nozzle installed on the nozzle seat can swing back and forth near the set pitch angle, and the rotating motor is detachably fixed by a rotating motor bracket detachably connected to the wall top. The side of the outer ring has a circumferential gear that meshes with the first driving gear on the output end of the rotating motor. The rotating motor drives the outer ring to rotate, causing the hollow sleeve rod, rack rod, nozzle bracket, lifting motor bracket, and lifting motor to rotate as a whole. Rotary encoders are installed on the output ends of the rotating motor and the lifting motor, and the horizontal coordinate position of each nozzle seat is obtained respectively by collecting the rotary encoder signal through the control and analysis circuit.

2. The fire extinguishing device according to claim 1, characterized in that: Each of the multi-head infrared sensors includes multiple infrared sensors and is equipped with a wireless transmission module for collecting the data of each infrared sensor head on the multi-head infrared sensor into the control and analysis circuit respectively. The two-dimensional moving pair has a rectangular frame, a first screw mechanism arranged on the edge of the rectangular frame, and multiple moving rods arranged across the edge of the rectangular frame and its opposite parallel edge in a direction perpendicular to the edge of the rectangular frame. Each moving rod is provided with multiple brackets for fixing the multi-head infrared sensor, and each bracket fixes a multi-head infrared sensor. The first screw mechanism drives the moving rod to move along the edge of the rectangular frame. A second screw mechanism is provided on the moving rod to drive the bracket to move along the vertical direction on the moving rod. Rotary encoders are installed at the output ends of the motors in the first screw mechanism and the second screw mechanism. The control and analysis circuit collects the rotary encoder signals to obtain the coordinate positions of each infrared sensor on the wall and the top of the wall.

3. The fire extinguishing device according to claim 2, characterized in that: After removing the wall panels and top panels, the relative spacing between the multiple brackets on the movable rod can be adjusted, thereby adjusting the detection range topology. When there is a large area of ​​hollowing, the relative spacing can be adjusted directly by utilizing the hollow operating space.

4. The fire extinguishing device according to claim 2, characterized in that: The detection directions of the multiple infrared sensors are different, and the detection directions are distributed sequentially in a fan-shaped arc direction; the detection directions of the multiple infrared sensors are adjustable.

5. The fire extinguishing device according to claim 1, characterized in that: The two-dimensional movement range is set based on the fire history data of the same type of room and is readjusted as the fire history data is accumulated; Rooms of the same type include kitchen, living room, bedroom, study, dining room and balcony.

6. The fire extinguishing device according to any one of claims 1 to 5, characterized in that: The multi-head sprinkler system is arranged on the top plate at a density of one sprinkler per 10-15 square meters indoors.

7. The fire extinguishing device according to claim 6, characterized in that: The lifting motor and the rotating motor are both servo motors that are switched in forward and reverse directions by wireless remote control of the control and analysis circuit.

8. A method for early warning of indoor fire origin, characterized in that: The fire extinguishing device according to any one of claims 1 to 7 comprises the following steps: S1: Collect historical data of various indoor fires and record the relative coordinates of the fire locations in the room; S2: Using clustering method, the coordinate distribution of fire locations in various indoor areas is statistically analyzed; S3: Connect multiple cluster center points to form multiple triangles or multiple polygons, select a point within the multiple triangles or multiple polygons, install the first infrared temperature sensing system and / or the second infrared temperature sensing system, so that the detection direction of the multiple infrared sensors can cover the points within all triangles or multiple polygons, and set a multi-head sprinkler system at the projection position of the top of the wall of the point, so that one multi-head sprinkler system is set for every 10-15 square meters in the room; S4: Monitoring the indoor temperature in a detection direction and periodically moving multiple infrared sensors in two dimensions. The control and analysis circuit collects first and second data to analyze the directional distribution of the indoor temperature, and is able to reconstruct the three-dimensional directional distribution of the indoor temperature and send it to the user's mobile smart terminal. When at least one infrared sensor senses a temperature exceeding the standard of 70°C in the detection direction, an alarm will be issued on the user's mobile smart terminal. The user needs to determine whether a disaster has occurred. If the specified time arrives and the user does not perform any operation, the control and analysis circuit calculates one or more nozzle seats that need to be rotated to the minimum angle and the pitch angle based on the coordinate position of the infrared sensor that detected the temperature exceeding the standard and the current position of each nozzle seat in the multi-head nozzle system. After controlling the one or more nozzle seats to rotate to the desired position, the pitch angle is adjusted according to the calculated pitch angle and the one or more nozzle seats are controlled to swing around the pitch angle. The solenoid valve connected to the corresponding water outlet pipe of the nozzle seat is controlled to spray water. Before the specified time arrives, it is determined that the water spraying operation is performed. If it is not determined, the alarm is cleared. If there are two equal minimum rotation angles, clockwise or counterclockwise rotation is selected.

9. The method according to claim 8, characterized in that The periodicity includes every 1 minute to 1 hour, the two-dimensional movement includes selecting the order of movement between the horizontal moving rod and the vertical moving bracket, with the temperature exceeding 80°C as the standard, the specified time includes 20 seconds to 4 minutes, and the frequency of sending to the user's mobile smart terminal is once every 1 day to once every 1 week.

10. The method according to claim 9, characterized in that If the multiple infrared sensors continue to detect a temperature drop in the detection direction within 10s-30s after spraying water, the water spraying is suspended and the user is prompted to move the smart terminal whether to continue spraying water. If the user confirms yes, the water spraying continues; otherwise, the water spraying is terminated.

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