Indoor precision fire source positioning device and positioning method thereof

Abstract

The application belongs to the technical field of fire source positioning equipment, and discloses an indoor precise fire source positioning device, which comprises a mounting sleeve, the top surface of the mounting sleeve is fixedly provided with a control analyzer, and the bottom surface of the mounting sleeve is fixedly provided with a fixing sleeve. The application utilizes the push rod mounting sleeve wire plate on the side surface of the push plate to complete the sleeving connection of the connecting wire by means of the sleeve wire groove on the sleeve wire plate, and the gas in the communicating cavity in the mounting sleeve is sucked by starting the suction mechanism, so that the air pressure in the communicating cavity is reduced, the pressure difference formed on both sides of the push plate is utilized to make the push plate move and drive the sleeve wire plate on the end surface of the push rod to slide towards the inside of the mounting sleeve, so that the sleeving connecting wire is pulled into the side edge sleeve, the storage of the excess length of the connecting wire is completed, the exposed connecting wire is reduced, the visual imaging mechanism is avoided from being shielded while the neatness and the appearance are improved, the stable indoor picture acquisition effect is ensured, and the storage of the connecting wire is convenient and the operation is simple.

Description

Technical Field

[0001] This invention belongs to the technical field of fire source positioning equipment, specifically a precise indoor fire source positioning device and its positioning method. Background Technology

[0002] In modern buildings, to prevent fires from spiraling out of control, fire alarm systems and automatic fire suppression systems are typically installed inside. These systems usually work together; when the fire alarm system detects a fire, it controls the automatic fire suppression system to spray water mist to extinguish the fire. A crucial aspect is locating the fire source inside the building. By accurately locating the fire source, precise and efficient fire suppression operations can be carried out. Common fire source location devices typically use a combination of machine vision and thermal infrared detection to achieve accurate fire source location.

[0003] Existing indoor precise fire source location devices typically employ thermal infrared detectors to detect high-temperature fire sources, combined with visual imaging cameras to display images, thereby achieving accurate fire source location. These devices are installed on the indoor ceiling to monitor and locate the indoor space. However, during installation, both the thermal infrared detector and the visual imaging camera require connecting wires to a control analyzer for signal transmission and power supply. Because the actual wires have pre-existing lengths, they often become tangled and dangling after connection. This results in messy wire distribution that obstructs the thermal infrared detector and visual imaging camera, affecting the monitoring and location of indoor fire sources. Furthermore, the simple bundling method significantly impacts the aesthetics and adds the need for disassembly, leading to unsatisfactory performance.

[0004] Furthermore, existing indoor precise fire source location devices rely excessively on thermal infrared detectors and visual imaging cameras to determine the source based on heat source temperature and fire source brightness. However, in reality, different substances burn at varying temperatures, and there may be smoldering without an open flame. In practice, it is difficult to effectively detect and locate the fire source in its early stages. It can only be detected and located when the combustion temperature rises or when a clear open flame appears. However, the actual fire source location is too delayed, making it difficult to extinguish the fire in time and missing the best time to extinguish the fire. Therefore, the actual monitoring and location effect is poor. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for accurately locating indoor fire sources, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device and method for locating a precise indoor fire source, comprising a mounting sleeve, a control analyzer fixedly mounted on the top surface of the mounting sleeve, a fixing sleeve fixedly mounted on the bottom surface of the mounting sleeve, a thermal infrared detector provided on the bottom surface of the fixing sleeve, a visual imaging mechanism fixedly mounted on the outer surface of the fixing sleeve, a central cavity formed inside the mounting sleeve, a communicating cavity formed on the outer surface of the mounting sleeve, the communicating cavity being annularly distributed on the outer surface of the mounting sleeve and communicating with the central cavity, a side sleeve fixedly mounted on the outer surface of the mounting sleeve, one end of the side sleeve communicating with the communicating cavity, and a fixing plate fixedly mounted on the inner surface of the communicating cavity. The front has a through hole. A spring is fixedly connected to the side of the fixing plate. A push plate is fixedly connected to the outer end of the spring. A push rod is fixedly connected to the outer side of the push plate. A sleeve plate is fixedly installed on the outer end face of the push rod. A sleeve groove is opened on the top surface of the sleeve plate. A suction mechanism is fixedly installed inside the fixing sleeve. A control valve is fixedly connected to the top surface of the suction mechanism. An air pipe is fixedly connected to the top surface of the control valve. The air pipe is connected to the intermediate cavity. A curved tube is fixedly connected to the outer surface of the fixing sleeve. The upper end of the curved tube is fixedly connected to the side sleeve. A gas detection sensor is fixedly sleeved on the outer surface of the curved tube. An installation tube is fixedly connected to the side of the side sleeve. The installation tubes are symmetrically distributed on both sides of the side sleeve.

[0007] First embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, after the thermal infrared detector and visual imaging mechanism are installed, the connecting wires on the thermal infrared detector and visual imaging mechanism are respectively connected to the slots of the sleeve plate, and the upper end of the connecting wire is connected to the control analyzer. The suction mechanism is started, which causes the air pump in the suction mechanism to draw in air, thereby causing the air in the air pipe to be drawn out through the control valve and the suction pipe. This reduces the air pressure in the middle cavity and the connecting cavity, creating a pressure difference on both sides of the push plate. The air pressure on the outside of the push plate pushes the push plate to slide. As the push plate slides towards the fixed plate, the spring is gradually compressed, which drives the push rod to slide. This causes the sleeve plate to pull the connecting wire into the side sleeve, completing the storage of the excess length of the connecting wire.

[0008] First, a connecting side sleeve is fixed to the side of the mounting sleeve, and a connecting cavity is opened inside the mounting sleeve to connect the connecting cavity with the side sleeve. A push plate is then fitted into the side sleeve, and a cable tray is installed using a push rod on the side of the push plate. The cable tray is then used to connect the connecting wires using the cable tray grooves. By activating a suction mechanism, the gas in the connecting cavity of the mounting sleeve is drawn out, reducing the air pressure inside the cavity. The pressure difference between the two sides of the push plate causes the push plate to move, which in turn causes the cable tray on the push rod end face to slide into the mounting sleeve, thus pulling the connected connecting wires into the side sleeve. This completes the storage of excess connecting wires, reducing the number of exposed connecting wires, improving neatness and aesthetics, avoiding obstruction of the visual imaging mechanism, ensuring stable indoor image acquisition, and making the storage of connecting wires convenient and simple to operate.

[0009] Preferably, the inner diameter of the connecting cavity is the same as the inner diameter of the side sleeve, and the cross-sectional dimension of the sleeve plate is smaller than the inner diameter of the side sleeve. By controlling the dimensions of the sleeve plate and the side sleeve, the sleeve plate can slide into the side sleeve. By controlling the dimensions of the sleeve plate and the connecting cavity, the push plate can achieve sealing while moving. The surface of the push plate can be made of an elastic material to further improve the sealing effect during movement.

[0010] Preferably, the number of the sleeve plates is six, and the six sleeve plates are evenly spaced and distributed in a ring on the outside of the mounting sleeve. The sleeve groove is a "T" shaped groove. By using the sleeve plates, the connection and positioning of the connecting wires are realized. In conjunction with the "T" shaped sleeve groove, it is ensured that the connecting wires can be stably pulled and pushed out when moving back and forth laterally.

[0011] Preferably, the suction mechanism includes an air pump, an air intake pipe, and an air outlet pipe. The air pump is fixedly installed inside the fixed sleeve. The air intake pipe and the air outlet pipe are respectively fixedly connected to the air intake end and the air outlet end of the air pump. The upper end of the air intake pipe is connected to a control valve. By using the air pump in the suction mechanism to draw air, the connection wires can be stored and the indoor air flow can be provided, thus enabling the detection of ambient air intake.

[0012] Preferably, a partition is fixedly fitted inside the fixed sleeve, and the partition is fixedly fitted outside the suction pipe. The partition is located below the control valve, and a side pipe is fixedly connected to the side of the control valve. By controlling the change of suction direction using the control valve, when it is necessary to store the connecting wire, it is only connected to the air pipe. When it is necessary to inhale smoke for detection, it only keeps the side pipe connected. When it is necessary to clean the filter plate or remove the connecting wire, the control valve opens the side pipe and the air pipe at the same time to achieve the pressure increase and restoration of the intermediate chamber.

[0013] Preferably, the side of the fixed sleeve is provided with a side hole, which is connected to the curved tube and is located above the partition. The side of the fixed sleeve is provided with an air outlet groove, which is located below the partition. By utilizing the air outlet groove and cooperating with the partition, the air drawn in can be discharged from the side of the fixed sleeve.

[0014] Preferably, a filter plate is fixedly sleeved on the outer surface of the push rod. The cross-sectional dimensions of the filter plate are the same as those of the push plate. The filter plate is located near the sleeve plate. By controlling the size of the filter plate, the filter plate can move with the push rod into the interior of the side sleeve and filter impurities in the intake air. Under the spring force reset, the push rod pushes the filter plate out, which facilitates cleaning of the filter plate exposed on the outside.

[0015] Preferably, the bottom surface of the mounting sleeve has a connecting hole, the inner surface of the connecting hole is fixedly connected to the air pipe, the connecting hole is connected to the intermediate cavity, the outer surface of the mounting sleeve is fixedly connected to a support rod, and the top surface of the support rod is fixedly installed with a mounting plate. By using the support rod and the mounting plate, the device is fixedly installed to the indoor ceiling or the installation equipment, ensuring that the device is located above the indoor space, which facilitates fire source monitoring of the space below the room, and the connecting hole is used to connect the intermediate cavity after the air pipe is connected.

[0016] Second embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, after the connecting wires are stored, the control valve is activated, causing it to seal the air pipe. Simultaneously, the side pipe connected to the side is opened, maintaining the suction mechanism's intake. This allows ambient air at the installation pipe to be drawn into the side sleeve, and the drawn-in air flows into the curved pipe. Gas detection is performed in the curved pipe by a gas detection sensor. After detection, the gas enters the interior of the fixed sleeve through the side hole and is discharged through the suction mechanism and the gas outlet groove on the side of the fixed sleeve. When smoldering or low-temperature combustion occurs in the indoor fire source, the heat source signal image collected by the fire source thermal infrared detector shows no obvious fire source. The continuous intake of the suction mechanism in the device continues, generating a certain amount of combustion smoke at the fire source location. This smoke is guided by the indoor airflow direction and drawn into the installation pipe along the flow direction. Impurities in the smoke are filtered on one side of the filter plate in the side sleeve. After filtration, the smoke is drawn into the curved pipe, and the gas detection sensor on the curved pipe detects the intake. Smoke is introduced and the detection signal is sent to the control analyzer. The control analyzer judges the air composition in the uploaded data to determine that a fire has occurred indoors. At the same time, based on multiple sets of uploaded data, it identifies the gas detection sensor with the highest smoke content and determines the direction of smoke generation, thereby locating the fire source. When the control analyzer detects the direction of the fire source indoors through the gas detection sensor, it compares the location information with the thermal image and indoor monitoring screen to comprehensively locate the accurate location of the fire source and simultaneously issues an alarm signal. When it is necessary to clean the filter on the filter plate in the side sleeve, the control valve is activated, connecting both the air pipe and the side pipe while keeping the air pump closed. As ambient air is automatically drawn into the intermediate chamber through the air pipe, the air pressure in the intermediate chamber is restored, the spring elasticity returns to its original state, and pushes the push plate to reset. This causes the push rod to slide the sleeve plate out of the side sleeve, and the filter plate sleeved on the push rod is removed from the side sleeve for cleaning.

[0017] First, a circularly distributed curved pipe is fixedly connected between the side sleeve and the fixed sleeve. A gas detection sensor, fitted inside the curved pipe, is installed on the outer surface of the curved pipe. Combined with a suction mechanism and a control valve, ambient air is drawn into the installation pipe, causing a convergence flow of indoor air in a specified direction. In the event of smoldering or low-temperature combustion, ambient air is drawn in from multiple directions, and multiple sets of circularly distributed gas detection sensors detect air composition in a timely manner. The presence of a fire is determined by detecting the smoke produced during combustion, and the direction of the fire source is determined by the concentration detected by gas detection sensors in different locations. This greatly improves the accuracy of fire source location and avoids situations where the fire source cannot be located during smoldering or low-temperature combustion. This comprehensively improves the actual fire source location effect. Furthermore, by using the method of airflow intake detection, the fire source can be quickly identified in the early stages of a fire by detecting the smoke produced during combustion. By fitting gas pipes arranged in different directions onto the installation pipe, targeted arrangements can be made for fire-prone locations, increasing the smoke intake speed and significantly improving the speed of actual fire source location.

[0018] A positioning method for an indoor precision fire source locating device includes the following positioning method:

[0019] Step 1: When a visible fire source appears indoors, the thermal infrared detector detects the location of the fire source and sends the fire source detection signal to the control analyzer. The control analyzer then generates a thermal image based on the uploaded signal. Simultaneously, it combines a visual imaging mechanism to upload an image of the indoor environment to the control analyzer, forming an indoor monitoring image. The control analyzer compares the fire source location in the thermal image with the indoor monitoring image to determine the accurate location of the fire source, thus completing the fire source localization.

[0020] Step 2: When smoldering or low-temperature combustion occurs in the indoor fire source, the heat source signal image collected by the fire source thermal infrared detector does not show an obvious fire source. The suction mechanism in the device continues to draw in air, and a certain amount of smoke generated by combustion is produced at the fire source location. The smoke is guided by the indoor air flow direction and is drawn into the installation pipe along the flow direction. Impurities in the smoke are filtered on one side of the filter plate in the side sleeve. After filtration, the smoke is drawn into the curved pipe. At the same time, the gas detection sensor located on the curved pipe detects the smoke and sends the detection signal to the control analyzer. The control analyzer judges the air composition in the uploaded data and determines that there is a fire in the room. At the same time, based on multiple sets of uploaded data, it determines the gas detection sensor with the highest smoke content and determines the direction of smoke generation, thereby locating the fire source direction.

[0021] Step 3: After the control analyzer detects the direction of the indoor fire source through the gas detection sensor, it compares the location information with the thermal image and the indoor monitoring screen to determine the accurate location of the fire source and issues an alarm signal at the same time.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention fixes a connecting side sleeve to the side of the mounting sleeve and opens a connecting cavity inside the mounting sleeve, so that the connecting cavity is connected to the side sleeve. A push plate is fitted into the side sleeve, and a sleeve plate is installed using a push rod on the side of the push plate. The sleeve plate uses the sleeve groove on the sleeve plate to complete the connection of the connecting wire. By activating the suction mechanism, the gas in the connecting cavity of the mounting sleeve is sucked out, so that the air pressure in the connecting cavity is reduced. The pressure difference formed on both sides of the push plate causes the push plate to move and drive the sleeve plate on the end face of the push rod to slide into the mounting sleeve, thereby pulling the sleeved connecting wire into the side sleeve. This completes the storage of the connecting wire of excess length, reduces the exposed connecting wire, improves the neatness and appearance, avoids obstructing the visual imaging mechanism, ensures a stable indoor image acquisition effect, and makes the storage of connecting wire convenient and simple to operate.

[0024] 2. This invention uses a fixed, annularly distributed curved tube between the side sleeve and the fixed sleeve, and installs a gas detection sensor on the outer surface of the curved tube, which is then fitted inside the tube. Combined with a suction mechanism and a control valve, this allows ambient air to be drawn in at the installation point, resulting in a convergent flow of indoor air in a specified direction. In cases of smoldering or low-temperature combustion, ambient air is drawn in from multiple directions, and multiple annularly distributed gas detection sensors detect air composition in a timely manner. The presence of a fire is determined by detecting the smoke produced during combustion, and the direction of the fire source is determined by the concentration detected by gas detection sensors in different locations. This significantly improves the accuracy of fire source location, avoiding situations where the fire source cannot be located during smoldering or low-temperature combustion, thus comprehensively improving the actual fire source location effect.

[0025] 3. This invention utilizes the method of detecting incoming flowing air to quickly identify the source of a fire in its early stages by detecting the smoke produced by combustion. Furthermore, by attaching air pipes arranged in different directions to the installation pipe, targeted arrangements can be made for locations prone to fire, thereby increasing the speed of smoke intake and greatly improving the speed of actual fire source location. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0028] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0029] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0030] Figure 5 This is a cross-sectional schematic diagram of the mounting sleeve of the present invention;

[0031] Figure 6 This is an exploded view of the fixing sleeve of the present invention;

[0032] Figure 7 This is an exploded view of the side sleeve and push rod of the present invention.

[0033] In the diagram: 1. Mounting sleeve; 2. Fixing sleeve; 3. Visual imaging mechanism; 4. Thermal infrared detector; 5. Control analyzer; 6. Intermediate cavity; 7. Connecting cavity; 8. Fixing plate; 9. Through hole; 10. Side sleeve; 11. Push rod; 12. Push plate; 13. Sleeve plate; 14. Sleeve groove; 15. Spring; 16. Suction mechanism; 161. Air pump; 162. Suction pipe; 163. Air outlet pipe; 17. Control valve; 18. Air pipe; 19. Curved pipe; 20. Gas detection sensor; 21. Side hole; 22. Partition plate; 23. Side pipe; 24. Air outlet groove; 25. Filter plate; 26. Mounting pipe; 27. Support rod; 28. Mounting plate; 29. ​​Sleeve hole. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 7As shown, this embodiment of the invention provides a device and method for locating a precise indoor fire source, including a mounting sleeve 1. A control analyzer 5 is fixedly fitted onto the top surface of the mounting sleeve 1. A fixing sleeve 2 is fixedly installed onto the bottom surface of the mounting sleeve 1. A thermal infrared detector 4 is provided on the bottom surface of the fixing sleeve 2. A visual imaging mechanism 3 is fixedly installed on the outer surface of the fixing sleeve 2. A central cavity 6 is formed inside the mounting sleeve 1. A communicating cavity 7 is formed on the outer surface of the mounting sleeve 1. The communicating cavities 7 are distributed in a ring on the outer surface of the mounting sleeve 1 and communicate with the central cavity 6. A side sleeve 10 is fixedly installed on the outer surface of the mounting sleeve 1. One end of the side sleeve 10 communicates with the communicating cavity 7. A fixing plate 8 is fixedly fitted onto the inner surface of the communicating cavity 7. A through hole 9 is formed on the front side of the fixing plate 8. A spring 15 is fixedly connected, and a push plate 12 is fixedly connected to the outer end of the spring 15. A push rod 11 is fixedly connected to the outer side of the push plate 12. A sleeve plate 13 is fixedly installed on the outer end face of the push rod 11. A sleeve groove 14 is opened on the top surface of the sleeve plate 13. A suction mechanism 16 is fixedly installed inside the fixed sleeve 2. A control valve 17 is fixedly connected to the top surface of the suction mechanism 16. An air pipe 18 is fixedly connected to the top surface of the control valve 17. The air pipe 18 is connected to the intermediate cavity 6. A curved tube 19 is fixedly connected to the outer surface of the fixed sleeve 2. The upper end of the curved tube 19 is fixedly connected to the side sleeve 10. A gas detection sensor 20 is fixedly sleeved on the outer surface of the curved tube 19. An installation tube 26 is fixedly connected to the side of the side sleeve 10. The installation tubes 26 are symmetrically distributed on both sides of the side sleeve 10.

[0036] First embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, after the thermal infrared detector 4 and the visual imaging mechanism 3 are installed, the connecting wires on the thermal infrared detector 4 and the visual imaging mechanism 3 are respectively connected to the slot 14 of the sleeve plate 13, and the upper end of the connecting wire is connected to the control analyzer 5. The suction mechanism 16 is started, so that the air pump 161 in the suction mechanism 16 draws air, thereby causing the air in the air pipe 18 to be drawn out through the control valve 17 and the suction pipe 162, which in turn reduces the air pressure in the intermediate cavity 6 and the connecting cavity 7, creating a pressure difference on both sides of the push plate 12. The air pressure on the outside of the push plate 12 pushes the push plate 12 to slide. As the push plate 12 slides toward the fixed plate 8, the spring 15 is gradually compressed, which at the same time drives the push rod 11 to slide, thereby causing the sleeve plate 13 to pull the connecting wire into the side sleeve 10, completing the storage of the excess length of the connecting wire.

[0037] First, a connecting side sleeve 10 is fixed to the side of the mounting sleeve 1, and a connecting cavity 7 is opened inside the mounting sleeve 1, so that the connecting cavity 7 is connected to the side sleeve. A push plate 12 is fitted into the side sleeve 10, and a sleeve plate 13 is installed using the push rod 11 on the side of the push plate 12. The sleeve groove 14 on the sleeve plate 13 is used to complete the connection of the connecting wire. The gas in the connecting cavity 7 in the mounting sleeve 1 is sucked out by the suction mechanism 16, so that the air pressure in the connecting cavity 7 is reduced. The pressure difference formed on both sides of the push plate 12 causes the push plate 12 to move and drive the sleeve plate 13 on the end face of the push rod 11 to slide into the mounting sleeve 1, thereby pulling the sleeved connecting wire into the side sleeve 10, completing the storage of the excess length of the connecting wire, reducing the exposed connecting wire, improving the neatness and appearance, avoiding obstruction of the visual imaging mechanism 3, ensuring a stable indoor image acquisition effect, and making the storage of the connecting wire convenient and simple to operate.

[0038] The inner diameter of the connecting cavity 7 is the same as that of the side sleeve 10, and the cross-sectional dimension of the sleeve plate 13 is smaller than that of the side sleeve 10. By controlling the dimensions of the sleeve plate 13 and the side sleeve 10, the sleeve plate 13 can slide into the side sleeve 10. By controlling the dimensions of the sleeve plate 13 and the connecting cavity 7, the push plate 12 can achieve sealing while moving. The surface of the push plate 12 can be made of elastic material to further improve the sealing effect during movement.

[0039] The number of sleeve plates 13 is six. The six sleeve plates 13 are evenly spaced and distributed in a ring on the outside of the mounting sleeve 1. The sleeve groove 14 is a "T" shaped groove. The sleeve plates 13 are used to realize the sleeve limit of the connecting wire. In conjunction with the "T" shaped sleeve groove 14, it is ensured that the connecting wire can be pulled and pushed out stably when moving back and forth laterally.

[0040] The suction mechanism 16 includes an air pump 161, an air intake pipe 162, and an air outlet pipe 163. The air pump 161 is fixedly installed inside the fixed sleeve 2. The air intake pipe 162 and the air outlet pipe 163 are respectively fixedly connected to the air intake end and the air outlet end of the air pump 161. The upper end of the air intake pipe 162 is connected to the control valve 17. By using the air pump 161 in the suction mechanism 16 to draw air, the connection wires can be stored and the indoor air flow can be provided, thus enabling the detection of ambient air intake.

[0041] The fixed sleeve 2 has a partition 22 fixedly fitted inside, which is fixedly fitted to the outside of the suction pipe 162. The partition 22 is located below the control valve 17. The side of the control valve 17 is fixedly connected to the side pipe 23. By controlling the change of suction direction using the control valve 17, when it is necessary to store the connecting wire, it is only connected to the air pipe 18. When it is necessary to detect the intake of smoke, it only keeps the side pipe 23 connected. When it is necessary to clean the filter plate 25 or remove the connecting wire, the control valve 17 opens the side pipe 23 and the air pipe 18 at the same time to realize the pressure increase and restoration of the intermediate chamber 6.

[0042] The fixed sleeve 2 has a side hole 21 on its side, which is connected to the curved tube 19. The side hole 21 is located above the partition 22. The fixed sleeve 2 has an air outlet groove 24 on its side, which is located below the partition 22. By using the air outlet groove 24 and the partition 22, the air can be discharged from the side of the fixed sleeve 2 after being drawn in.

[0043] The outer surface of the push rod 11 is fixedly fitted with a filter plate 25. The cross-sectional dimensions of the filter plate 25 are the same as those of the push plate 12. The filter plate 25 is located near the sleeve plate 13. By controlling the size of the filter plate 25, the filter plate 25 can move with the push rod 11 into the interior of the side sleeve 10 and filter impurities in the intake air. Under the elastic reset of the spring 15, the push rod 11 pushes out the filter plate 25, which is convenient for cleaning the filter plate 25 exposed on the outside.

[0044] The mounting sleeve 1 has a connecting hole 29 on its bottom surface. The inner surface of the connecting hole 29 is fixedly connected to the gas pipe 18. The connecting hole 29 is connected to the intermediate cavity 6. The outer surface of the mounting sleeve 1 is fixedly connected to a support rod 27. The top surface of the support rod 27 is fixedly installed with a mounting plate 28. The device is fixedly installed to the indoor ceiling or the installation equipment by using the support rod 27 and the mounting plate 28, ensuring that the device is located above the indoor space, which facilitates fire source monitoring of the space below the room. The connecting hole 29 is used to connect the intermediate cavity 6 after the gas pipe 18 is connected.

[0045] Second embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, after the connecting wires are stored, the control valve 17 is activated, causing it to seal the air pipe 18. Simultaneously, the side pipe 23 is opened, maintaining the suction mechanism 16. This allows ambient air at the mounting pipe 26 to be drawn into the side sleeve 10, and the drawn-in air flows into the curved pipe 19. Gas detection is performed in the curved pipe 19 by the gas detection sensor 20. After detection, the gas enters the interior of the fixed sleeve 2 through the side hole 21 and passes through the suction mechanism 16 and the air outlet groove 2 on the side of the fixed sleeve 2. 4. Exhaust: When smoldering or low-temperature combustion occurs in the indoor fire source, the heat source signal image collected by the fire source thermal infrared detector 4 shows no obvious fire source. The suction mechanism 16 in the device continues to draw in air, generating a certain amount of smoke at the fire source location. This smoke is guided by the indoor airflow direction and drawn into the installation pipe 26. Impurities in the smoke are filtered in the side sleeve 10 onto one side of the filter plate 25. After filtration, the smoke is drawn into the curved pipe 19. Simultaneously, the gas detection sensor 20 on the curved pipe 19 detects the drawn-in smoke and sends a detection signal to the control analyzer 5. The control analyzer 5 judges the air composition in the uploaded data, determines that a fire has occurred indoors, and, based on multiple sets of uploaded data, identifies the gas detection sensor 20 with the highest smoke content and determines the direction of smoke generation, thus locating the fire source. After the control analyzer 5 detects the indoor fire source direction through the gas detection sensor 20, it compares the location information with the thermal imaging image and the indoor monitoring screen to comprehensively locate the accurate position of the fire source and simultaneously issues an alarm. Signal is given; when it is necessary to clean the filter material on the filter plate 25 in the side sleeve 10, the control valve 17 is activated, so that the air pipe 18 and the side pipe 23 are connected, and the air pump 161 is kept closed. As the intermediate chamber 6 automatically draws in ambient air through the air pipe 18, the air pressure in the intermediate chamber 6 is restored, the spring 15 elastically returns to its original state and pushes the push plate 12 to reset, so that the push rod 11 drives the sleeve plate 13 to slide out of the side sleeve 10. At the same time, the filter plate 25 sleeved on the push rod 11 is moved out of the side sleeve 10, and the exposed filter plate 25 can be cleaned.

[0046] First, by fixing a circularly distributed curved pipe 19 between the side sleeve 10 and the fixed sleeve 2, and installing a gas detection sensor 20 sleeved inside the curved pipe 19 on the outer surface of the curved pipe 19, and cooperating with the suction mechanism 16 and the control valve 17, ambient air is drawn in at the installation pipe 26, thereby causing the indoor air to converge and flow in a specified direction. In the event of smoldering or low-temperature combustion, ambient air is drawn in from multiple directions, and multiple sets of circularly distributed gas detection sensors 20 are used to detect the air composition in a timely manner. The presence of a fire is determined by detecting the smoke produced by combustion, and the direction of the fire source is determined by the detection concentration of gas detection sensors 20 in different directions. This greatly improves the positioning accuracy when the fire source appears, avoiding the situation where the fire source cannot be located in the event of smoldering or low-temperature combustion. This comprehensively improves the actual fire source positioning effect. At the same time, by using the method of airflow intake detection, the fire source can be quickly identified in the early stage of a fire by detecting the smoke produced by combustion. Furthermore, by attaching gas pipes arranged in different directions to the installation pipe 26, targeted arrangements can be made for fire-prone locations to increase the smoke intake speed and greatly improve the actual fire source positioning speed.

[0047] A positioning method for an indoor precision fire source locating device includes the following positioning method:

[0048] Step 1: When a visible fire source appears indoors, the thermal infrared detector 4 detects the location of the fire source and sends the fire source detection signal to the control analyzer 5. The control analyzer 5 then generates a thermal image based on the uploaded signal. Simultaneously, the visual imaging mechanism 3 uploads an image of the indoor environment to the control analyzer 5, forming an indoor monitoring image. The control analyzer 5 compares the fire source location in the thermal image with the indoor monitoring image to determine the accurate location of the fire source, thus completing the fire source localization.

[0049] Step 2: When smoldering or low-temperature combustion occurs in the indoor fire source, there is no obvious fire source in the heat source signal image collected by the fire source thermal infrared detector 4. The suction mechanism 16 in the device continues to draw air, and a certain amount of smoke generated by combustion is produced at the fire source location. The smoke is guided by the indoor air flow direction and is drawn into the installation pipe 26 along the flow direction. Impurities in the smoke are filtered in the side sleeve 10 and on one side of the filter plate 25. After filtration, the smoke is drawn into the curved pipe 19. At the same time, the gas detection sensor 20 located on the curved pipe 19 detects the smoke and sends the detection signal to the control analyzer 5. The control analyzer 5 judges the air composition in the uploaded data and judges that there is a fire in the room. At the same time, based on multiple sets of uploaded data information, it judges the gas detection sensor 20 with the highest smoke content and determines the direction of smoke generation, thereby locating the fire source direction.

[0050] Step 3: After the control analyzer 5 detects the direction of the indoor fire source through the gas detection sensor 20, it compares the location information with the thermal imaging map and the indoor monitoring screen again to comprehensively locate the accurate location of the fire source and issue an alarm signal at the same time.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for locating a precise indoor fire source, comprising a mounting sleeve (1), characterized in that: The top surface of the mounting sleeve (1) is fixedly fitted with a control analyzer (5), the bottom surface of the mounting sleeve (1) is fixedly fitted with a fixing sleeve (2), the bottom surface of the fixing sleeve (2) is provided with a thermal infrared detector (4), the outer surface of the fixing sleeve (2) is fixedly fitted with a visual imaging mechanism (3), the interior of the mounting sleeve (1) is provided with an intermediate cavity (6), the outer surface of the mounting sleeve (1) is provided with a connecting cavity (7), the connecting cavity (7) is distributed in a ring on the outer surface of the mounting sleeve (1) and is connected to the intermediate cavity (6), the mounting sleeve (1) A side sleeve (10) is fixedly installed on the outer surface of the cavity (7). One end of the side sleeve (10) is connected to the connecting cavity (7). A fixing plate (8) is fixedly sleeved on the inner surface of the connecting cavity (7). A through hole (9) is opened on the front of the fixing plate (8). A spring (15) is fixedly connected to the side of the fixing plate (8). A push plate (12) is fixedly connected to the outer end of the spring (15). A push rod (11) is fixedly connected to the outer side of the push plate (12). A sleeve plate (13) is fixedly installed on the outer end face of the push rod (11). A slot (14) is provided on the top surface of the plate (13). A suction mechanism (16) is fixedly installed inside the fixed sleeve (2). A control valve (17) is fixedly connected to the top surface of the suction mechanism (16). An air pipe (18) is fixedly connected to the top surface of the control valve (17). The air pipe (18) is connected to the intermediate cavity (6). Multiple curved tubes (19) arranged in a ring are fixedly connected to the outer surface of the fixed sleeve (2). The upper end of the curved tube (19) is fixedly connected to the side sleeve (10). The outer surface of the curved tube (19) is fixedly sleeved with... A gas detection sensor (20) is provided. An installation tube (26) is fixedly connected to the side of the side sleeve (10). The installation tube (26) is symmetrically distributed on both sides of the side sleeve (10). Gas is actively drawn in by the suction mechanism (16). The gas detection sensor (20) detects and analyzes the gas. The control analyzer (5) determines the direction of the fire source based on the gas detection component data uploaded by the gas detection sensors (20) in multiple directions. It compares the data with the thermal imaging image and the indoor monitoring screen to comprehensively locate the accurate position of the fire source and issue an alarm signal.

2. The indoor precise fire source positioning device according to claim 1, characterized in that: The inner diameter of the connecting cavity (7) is the same as that of the side sleeve (10), and the cross-sectional dimension of the sleeve plate (13) is smaller than that of the side sleeve (10).

3. The indoor precise fire source positioning device according to claim 2, characterized in that: The number of the sleeve plates (13) is six, and the six sleeve plates (13) are evenly spaced and distributed in a ring on the outside of the mounting sleeve (1). The sleeve groove (14) is a "T" shaped groove.

4. The indoor precise fire source positioning device according to claim 1, characterized in that: The suction mechanism (16) includes an air pump (161), an air suction pipe (162), and an air outlet pipe (163). The air pump (161) is fixedly installed inside the fixed sleeve (2). The air suction pipe (162) and the air outlet pipe (163) are respectively fixedly connected to the air suction end and the air outlet end of the air pump (161). The upper end of the air suction pipe (162) is connected to the control valve (17).

5. The indoor precise fire source positioning device according to claim 1, characterized in that: The fixed sleeve (2) is fitted with a partition (22) inside. The partition (22) is fitted with the outside of the suction pipe (162). The partition (22) is located below the control valve (17). The side of the control valve (17) is fixedly connected to a side pipe (23).

6. The indoor precise fire source positioning device according to claim 1, characterized in that: The side of the fixed sleeve (2) is provided with a side hole (21), which is connected to the curved tube (19). The side hole (21) is located above the partition (22). The side of the fixed sleeve (2) is provided with an air outlet groove (24), which is located below the partition (22).

7. The indoor precise fire source positioning device according to claim 1, characterized in that: A filter plate (25) is fixedly sleeved on the outer surface of the push rod (11). The cross-sectional dimensions of the filter plate (25) are the same as those of the push plate (12). The filter plate (25) is located near the sleeve plate (13).

8. The indoor precise fire source positioning device according to claim 1, characterized in that: The bottom surface of the mounting sleeve (1) is provided with a sleeve hole (29). The inner surface of the sleeve hole (29) is fixedly sleeved with the air tube (18). The sleeve hole (29) is connected to the intermediate cavity (6). The outer surface of the mounting sleeve (1) is fixedly connected with a support rod (27). The top surface of the support rod (27) is fixedly installed with a mounting plate (28).

9. The positioning method of the indoor precision fire source positioning device according to any one of claims 1-8, characterized in that: The following positioning methods are included: Step 1: When an obvious fire source appears indoors, the thermal infrared detector (4) detects the location of the fire source and sends the fire source detection signal to the control analyzer (5). The control analyzer (5) generates a thermal image based on the uploaded signal. At the same time, it uploads the indoor environment image to the control analyzer (5) in conjunction with the visual imaging mechanism (3). An indoor monitoring image is formed in the control analyzer (5). The control analyzer (5) compares the fire source location in the thermal image with the indoor monitoring image to obtain the accurate location of the fire source and completes the fire source location. Step 2: When the indoor fire source is smoldering or low-temperature combustion, there is no obvious fire source in the heat source signal map collected by the fire source thermal infrared detector (4). The suction mechanism 16 in the device continues to suck air, and a certain amount of smoke generated by combustion is generated at the fire source location. The smoke is guided by the indoor air flow direction and sucked into the installation pipe (26) along the flow direction. The impurities in the smoke are filtered in the side sleeve (10) and filtered on one side of the filter plate (25). After filtration, the smoke is sucked into the curved pipe (19). At the same time, the gas detection sensor (20) located on the curved pipe (19) detects the smoke and sends the detection signal to the control analyzer (5). The control analyzer (5) judges the air composition in the uploaded data and judges that there is a fire in the room. At the same time, based on the multiple sets of uploaded data information, it judges the gas detection sensor (20) with the largest smoke content and determines the direction of smoke generation, thereby locating the fire source direction. Step 3: When the control analyzer (5) detects the direction of the indoor fire source through the gas detection sensor (20), it compares the location information with the thermal image and the indoor monitoring screen again to locate the accurate location of the fire source and issue an alarm signal at the same time.

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