Fire smoke alarm device based on satellite positioning function

Abstract

The invention discloses fire smoke alarm equipment based on a satellite positioning function, and belongs to the technical field of fire smoke alarm systems. Comprising a smoke alarm and a base, and double interchangeable collecting cylinders are arranged in the smoke alarm. The first collecting cylinder is used for a high-dust environment, and 80% of coarse dust is pre-separated through a large aperture and a settling table. The second collecting cylinder is used for high-humidity environment, small aperture and chimney effect condensation prevention, and the ventilation rate is larger than or equal to 96%. A smoke channel is integrated in an inner cavity of the upper connecting disc, an annular spraying array is arranged on the outer ring of the lower connecting disc, and the integration of detection, positioning and fire extinguishing is achieved. The satellite baseband chip and the infrared maze share an antenna guiding assembly, NMEA coordinates are frozen when smoke exceeds a threshold value, the NMEA coordinates are directly sent to a platform through NB-IoT, the positioning error is smaller than or equal to 2 m, and a platform map is a second-level flash point. The drawer type smoke detection module can be disassembled quickly in 5s, double silica gel sealing and pulse water spraying hole cooling are adopted, and long-term maintenance-free under high-temperature, high-dust and high-humidity conditions is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire smoke alarm system, and particularly relates to a fire smoke alarm device based on satellite positioning function. BACKGROUND

[0002] The traditional smoke alarm only has the function of "audible and visual prompt", and after the alarm, manual verification of the scene position is still needed, which is time-consuming, has large error, and is easy to delay the golden time of rescue. The existing Internet of Things smoke sensor can upload the alarm information to the platform, but generally adopts the mode of "alarm first and then manual address checking", and the platform only receives the device number, and the coordinates can be obtained by calling the background database or property account, so that the process is complicated, the positioning accuracy is often greater than 50 m, and the rapid rescue demand of complex scenes such as large commercial complexes, underground pipe galleries and high-rise apartments cannot be met.

[0003] Part of the scheme simply transplants the GPS module into the smoke sensor, but does not solve the influence of high temperature, high humidity and dust environment on the antenna and crystal oscillator. In addition, the existing "smoke sensing + fire extinguishing" split design needs independent spray head and controller, which has complex wiring, high cost, and the spray head coordinates and smoke sensor number cannot be automatically associated, and the fire control center still needs secondary matching, so that the system reliability is low. Therefore, a fire smoke alarm device based on satellite positioning function is provided. SUMMARY

[0004] The present application aims at solving the problems in the prior art and provides a fire smoke alarm device based on satellite positioning function.

[0005] In order to achieve the above-mentioned purpose, the technical scheme is as follows: A fire smoke alarm device based on satellite positioning function, comprising a smoke alarm and a base, the bottom of the smoke alarm is installed with the base, the smoke alarm comprises a device body and a smoke detection module installed on the side end face of the device body, a satellite positioning signal transmission module is installed on one side of the device body, a base is installed on the lower end face of the device body, the base comprises a base body and an outer ring interface opened in the outer circle of the base body, and a connecting piece is installed at the bottom position of the base body.

[0006] Preferably, the device body comprises a top cover and a smoke inlet opened on the upper surface of the top cover, and the outer end wall of the top cover is provided with a sliding rail. The base and the sliding rail form a drawer type interface, and the labyrinth channel on the upper end face of the detection assembly and the sampling port form a "double-stage airflow deceleration" structure, which can throw dust, water vapor and other large particles into the smoke inlet, and only allow 0.1-1 mu m combustion particles to enter the optical darkroom, so that the false alarm rate is reduced.

[0007] The sampling port and the smoke inlet port are in central alignment and short straight pass, the smoke can enter the optical cavity without 90° bending, the flow resistance is reduced by 50%, the response time is shortened from 15s to <8s under the same smoke concentration, and early warning in the early stage of smoldering is realized.

[0008] The entire smoke detection module and the device body are sealed by double silicone rings to prevent high dust and high humidity air from eroding the circuit board.

[0009] Preferably, the device body further comprises a bottom ring mounted on the outer circle of the bottom of the top cover, and a bearing table is mounted at the middle position of the bottom of the bottom ring.

[0010] Preferably, the body further comprises a central hole opened at the central position of the bearing table.

[0011] Preferably, the smoke detection module comprises a base and a detection assembly mounted on the upper end face of the base, a labyrinth channel is horizontally opened at the upper end face of the detection assembly, and a sampling port is opened at the middle position of the upper end face of the labyrinth channel.

[0012] Preferably, one end of the labyrinth channel is inserted into the inner cavity of the sliding rail, and the sampling port and the smoke inlet port are in communication with each other. Preferably, the satellite positioning signal transmission module comprises a transmission module body and an antenna guide assembly mounted on the upper end face of the transmission module body, a through hole is opened at the inner cavity position of the antenna guide assembly, a bottom plate is mounted at the bottom of the transmission module body, pulse water spray holes are opened at the four corner positions of the bottom of the bottom plate, the through hole penetrates through the inner cavities of the transmission module body and the bottom plate inwardly, and the through hole is in communication with the inner cavities of the pulse water spray holes. A tangential slot is opened at the upper end face of the antenna guide assembly, and a centrifugal vortex is formed after the airflow enters, dust particles with a particle size of ≥10µm are thrown to the cavity wall of the through hole 133 and slide to the bottom dust collecting ring, the collection efficiency of particles above 0.3µm is 92%, and there is no need to replace the HEPA, realizing the operation without consumables.

[0013] The through hole is a smooth and hydrophobic straight hole, and the dust freely falls along the wall to the annular temporary storage area of the pulse water spray hole; the accumulated dust can be discharged by daily vibration or back blowing, the pressure drop increases by <3% after 6 months of continuous operation, and the problem of easy dust accumulation and blockage of the air duct in the traditional side hole is completely solved.

[0014] After the fire is confirmed, the Φ0.8mm pulse micro-holes at the bottom of the four corners of the pulse water spray hole are opened instantaneously, a 30° solid cone water curtain is formed under the water pressure of 0.4MPa, the single-hole flow is 0.5L / min, and it can cover an area of 1m² within 10s, quickly reduce the smoke concentration by 60%, and the local temperature by 20℃, which gains critical time for personnel escape and subsequent starting of the sprinkler system.

[0015] The infrared maze output dust concentration analog quantity is mounted on the inner wall of the through hole, and the satellite baseband chip outputs NMEA coordinates mounted in the inner cavity of the base; the two are hung on the same low-power MCU through internal I2C; once the smoke concentration > threshold, the MCU immediately writes the "fire alarm flag" into the RAM, and freezes the current latitude and longitude, floor elevation.

[0016] The MCU packs the "fire alarm flag + frozen coordinates + timestamp" into a compact frame of 18 bytes, and transmits it through the four-arm spiral antenna of the built-in NB-IoT radio frequency satellite positioning signal transmission module 13, and directly sends it to the satellite or base station through the duplexer switch; the package format is compatible with the fire internet of things protocol, and the platform receives it with a second-level pop-up window, and a red flash point appears directly on the map, without the need for further "address matching" in the background.

[0017] The antenna guide assembly can play the role of an antenna while guiding the smoke into the device; The pulse water jet hole is located at the bottom, which can cool the whole machine when spraying water, prevent high temperature from affecting the GPS crystal oscillator drift, and ensure that the coordinate accuracy is ≤2m.

[0018] In summary, "smoke positioning, positioning alarm, alarm visible" - the scene has not seen the fire, the fire command center can accurately see which floor and which room on the map to achieve real "coordinate level" fire alarm.

[0019] Preferably, the connecting piece comprises an upper connecting disc and a lower connecting disc mounted on the lower end surface of the upper connecting disc, the outer edge of the upper connecting disc and the lower connecting disc is bolted by locking bolts, the bottom outer ring of the lower connecting disc is provided with a ring-shaped spray array, and the middle position of the bottom of the lower connecting disc is provided with a first collection cylinder; The upper connecting disc constitutes the top bearing layer of the connecting piece, the inner cavity is a smoke information processing channel, receives smoke data from the first collection cylinder, and transmits it to the analysis module of the device body; at the same time, it serves as the fixing base of the lower connecting disc.

[0020] The lower connecting disc and the upper connecting disc are bolted by locking bolts, forming a double-layer sealed cavity; the bottom is provided with a ring-shaped spray array and a first collection cylinder, realizing the physical integration of the spray outlet and the smoke inlet.

[0021] The locking bolt can ensure that the upper connecting disc and the lower connecting disc maintain structural stability in high-temperature and vibration environment, preventing misalignment or leakage caused by pressure during spraying.

[0022] The ring-shaped spray array is located at the bottom outer ring of the lower connecting disc, and is provided with a ring-shaped array of holes. During a fire, it can accurately spray fire extinguishing agents such as water / foam downward, forming a full-coverage fire suppression belt; the spraying action is triggered by the device body according to the smoke concentration threshold collected by the first collection cylinder.

[0023] Preferably, the connecting piece further comprises a second collection cylinder replaceable for the first collection cylinder, and the first and second collection cylinders are both communicated with the inner cavity of the annular spraying array; The bottom material inlet of the first collection cylinder is provided as a concave large-aperture and vertically downward cylinder structure, so that the resistance of the dust-containing airflow entering is suddenly reduced, the amount of smoke sampling is increased under the same fan power consumption, and early-stage smoldering particles can be captured within 10 seconds even when the dust explosion is in a high-dust workshop, a mine belt gallery or the like.

[0024] The concave cylinder port forms an annular "settling platform", and large-diameter dust and sand are separated by inertia impact and fall into the step dead angle, so that more than 80% of coarse dust with a particle size greater than or equal to 50 microns is pre-separated, the load of the rear filter screen is significantly reduced, and the filter screen cleaning cycle is prolonged by 3 times.

[0025] The cylinder body still remains vertically downward, and when the equipment is back-flushed or vibrated for a short time every day, the coarse dust accumulated in the settling platform is automatically discharged under the action of gravity, realizing "zero manual cleaning" and solving the pain point of regular brushing of the traditional horizontal collection port.

[0026] The smoke collection efficiency is ensured to be constant in a harsh environment, and the smoke collection is isolated from the spraying area of the annular spraying array to prevent the spraying liquid from interfering with the collection.

[0027] When a fire occurs, the first and second collection cylinders suck the smoke into the inner cavity of the upper connecting disc, the smoke concentration signal is transmitted to the equipment body through the inner cavity of the upper connecting disc to trigger satellite positioning marking and fire determination, and after the determination reaches a threshold value, the annular spraying array is instantaneously started to spray downward, realizing integrated response of "detection, positioning and fire extinguishing".

[0028] Compared with the prior art, the present application has the following advantages: The first collection cylinder is used in a high-dust environment, the large-aperture + settling platform pre-separates 80% of coarse dust, the second collection cylinder is used in a high-humidity environment, the small-aperture + chimney effect prevents condensation, and the ventilation rate is greater than or equal to 96%. The inner cavity of the upper connecting disc integrates a smoke channel, and the outer circle of the lower connecting disc is provided with an annular spraying array, realizing integrated "detection, positioning and fire extinguishing".

[0029] The satellite baseband chip and the infrared maze share an antenna guide assembly, the smoke is frozen at a threshold value, and the positioning error is less than or equal to 2 meters through the NB-IoT direct sending platform, and the platform map flashes in seconds. The drawer-type smoke detection module is fast disassembled in 5 seconds, double-silicone-seal + pulse water jet hole cooling, and long-term maintenance-free is guaranteed under high temperature, high dust and high humidity. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A three-dimensional structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided. Figure 2A smoke alarm structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application. Figure 3 A device body structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application. Figure 4 A device body bottom structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application. Figure 5 A device body bottom structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application. Figure 6 A smoke detection module structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application. Figure 7 A satellite positioning signal transmission module structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application. Figure 8 A base structure schematic diagram of a fire smoke alarm device based on satellite positioning function is provided in the present application.

[0031] In the figure: 1, smoke alarm; 11, device body; 111, top cover; 112, smoke inlet; 113, slide rail; 114, bottom ring; 115, bearing table; 116, center hole; 12, smoke detection module; 121, base; 122, detection assembly; 123, labyrinth passage; 124, sampling port; 13, satellite positioning signal transmission module; 131, transmission module body; 132, antenna guide assembly; 133, through hole; 134, bottom plate; 135, pulse water jet hole; 2, base; 21, base body; 22, outer ring interface; 23, connecting piece; 231, upper connecting disc; 232, lower connecting disc; 233, locking bolt; 234, annular spray array; 235, first collection cylinder; 236, second collection cylinder. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0033] REFERENCE Figures 1-8, the embodiment 1, a satellite positioning function based fire smoke alarm device, including smoke alarm 1 and base 2, the bottom of smoke alarm 1 installs base 2, smoke alarm 1 includes device body 11 and the smoke detection module 12 installed on the side end surface of device body 11, the side of device body 11 installs satellite positioning signal transmission module 13, the lower end surface of device body 11 installs base 2, base 2 includes base main body 21 and the outer ring interface 22 opened in the outer circle of base main body 21, the bottom position of base main body 21 installs connecting piece 23.

[0034] Device body 11 includes top cover 111 and smoke inlet 112 opened in the upper surface of top cover 111, outer end wall of top cover 111 is opened slide rail 113.Base 121 and slide rail 113 form drawer type interface, the labyrinth passage 123 on the upper end surface of detection assembly 122 and sampling port 124 form "double-stage airflow deceleration" structure, can throw dust, water vapor and other large particles into smoke inlet 112, only let 0.1-1µm combustion particles enter optical darkroom, false alarm rate is reduced.

[0035] Sampling port 124 and smoke inlet 112 center alignment, short-range straight-through, smoke can enter optical cavity without 90° bending, flow resistance drops by 50%, response time is shortened from 15s to <8s under the same smoke concentration, early warning in smoldering stage is realized.

[0036] Double-channel silica gel sealing ring is used between the whole smoke detection module 12 and device body 11, prevent high dust, high humidity air erosion circuit board.

[0037] The embodiment 2, device body 11 also includes bottom ring 114 installed on the bottom outer circle of top cover 111, bottom bearing table 115 is installed in the middle position of bottom ring 114.

[0038] Device body 11 also includes center hole 116 opened in the center position of bearing table 115.

[0039] Smoke detection module 12 includes base 121 and detection assembly 122 installed on the upper end surface of base 121, the upper end surface of detection assembly 122 is laterally opened labyrinth passage 123, sampling port 124 is opened in the middle position of the upper end surface of labyrinth passage 123.

[0040] One end of labyrinth passage 123 is inserted into the inner cavity of slide rail 113, sampling port 124 and smoke inlet 112 are communicated with each other; The satellite positioning signal transmission module 13 comprises a transmission module body 131 and an antenna guide assembly 132 installed on the upper end face of the transmission module body 131, a through hole 133 is formed at the inner cavity position of the antenna guide assembly 132, a bottom plate 134 is installed at the bottom of the transmission module body 131, pulse water spraying holes 135 are formed at the bottom edges of the four corners of the bottom plate 134, the through hole 133 penetrates through the inner cavities of the transmission module body 131 and the bottom plate 134 inwardly, and the inner cavities of the through hole 133 and the pulse water spraying holes 135 are communicated; The upper end face of the antenna guide assembly 132 is provided with a cyclone tangential groove, and after the airflow enters, a centrifugal vortex is formed, dust particles with a particle size of ≥10µm are thrown to the cavity wall of the through hole 133 and slide to the bottom dust collecting ring, and the collection efficiency of particles above 0.3µm is 92%, without the need to replace the HEPA, and the operation is realized without consumables.

[0041] The through hole 133 is a smooth and hydrophobic straight hole, and the dust freely falls along the wall to the annular temporary storage area of the pulse water spraying hole 135; the accumulated dust can be discharged by daily vibration or back blowing, the pressure drop increases by less than 3% in 6 months of continuous operation, and the problem of easy dust accumulation and blockage of the air duct of the traditional side hole is completely solved.

[0042] In example 3, after fire confirmation, the Φ0.8mm pulse micro-holes at the bottom of the four corners of the pulse water spraying hole 135 are instantaneously opened, a 30° solid cone water curtain is formed under the water pressure of 0.4MPa, the single-hole flow rate is 0.5L / min, and a 1m² area can be covered within 10s, the smoke concentration is rapidly reduced by 60%, and the local temperature is reduced by 20℃, which gains critical time for personnel escape and subsequent starting of the spraying system.

[0043] In example 4, the infrared labyrinth outputs dust concentration analog quantity at the inner wall of the through hole 133, and the satellite baseband chip outputs NMEA coordinates at the inner cavity of the base 131, both of which are hung on the same low-power MCU through internal I²C; once the smoke concentration is greater than the threshold value, the MCU immediately writes the “fire alarm flag” into the RAM, and freezes the current latitude, longitude and floor elevation.

[0044] The MCU packs the “fire alarm flag + frozen coordinates + time stamp” into a compact frame of 18 bytes, and transmits it through the four-arm spiral antenna of the built-in NB-IoT radio frequency shared satellite positioning signal transmission module 13, and directly sends it to the satellite or the base station through the duplexer switching; the package format is compatible with the fire internet of things protocol, and after receiving, the platform pops up a window in seconds, and a red flash point directly appears on the map, without the need for “address matching” in the background.

[0045] The antenna guide assembly 132 can play the role of an antenna while guiding the smoke to enter; The pulse water spraying hole 135 is located at the bottom, and when spraying water, the whole machine is cooled, preventing high temperature from affecting the GPS crystal oscillator drift, and ensuring that the coordinate accuracy is ≤2m.

[0046] In summary, "smoke positioning, positioning alarm, alarm can be seen" - the scene has not seen the fire, the fire command center can be accurate to the meter on the map to see which floor which room, to achieve the real "coordinate level" fire alarm.

[0047] In embodiment 5, the connecting piece 23 comprises an upper connecting disc 231 and a lower connecting disc 232 installed on the lower end surface of the upper connecting disc 231, the outer edge of the upper connecting disc 231 and the lower connecting disc 232 are bolted by locking bolts 233, the bottom outer ring of the lower connecting disc 232 is provided with an annular spray array 234, and the middle position of the bottom of the lower connecting disc 232 is provided with a first collection cylinder 235; The upper connecting disc 231 constitutes the top bearing layer of the connecting piece 23, the inner cavity is a smoke information processing channel, receives smoke data from the first collection cylinder 235, and transmits to the analysis module of the device body 11; at the same time, it serves as a fixed base for the lower connecting disc 232.

[0048] The lower connecting disc 232 and the upper connecting disc 231 are bolted by locking bolts 233 to form a double-layer sealed cavity; the bottom is provided with an annular spray array 234 and a first collection cylinder 235 to realize the physical integration of the spray outlet and the smoke inlet.

[0049] The locking bolts 233 can ensure that the upper connecting disc 231 and the lower connecting disc 232 remain structurally stable in a high-heat, vibration environment, preventing misalignment or leakage caused by pressure during spraying.

[0050] The annular spray array 234 is located at the bottom outer ring of the lower connecting disc 232 and is an annular array of holes, which can accurately spray fire extinguishing agents such as water / foam downward during a fire, forming a full-coverage fire suppression belt; the spraying action is triggered by the device body 11 according to the smoke concentration threshold collected by the first collection cylinder 235.

[0051] In embodiment 6, the connecting piece 23 further comprises a second collection cylinder 236 which can replace the first collection cylinder 235, and the first collection cylinder 235 and the second collection cylinder 236 are both in communication with the inner cavity of the annular spray array 234; The bottom material port of the first collection cylinder 235 is designed as a vertically downward cylindrical structure with a large aperture and an inner recess, which causes a sudden drop in resistance when dust-containing airflow enters, increases the amount of smoke sampling under the same fan power consumption, and ensures that early-stage smoldering particles can be captured within 10 seconds even in high-dust workshops, mine belt corridors and other places when the dust explosion table is at its maximum.

[0052] The inner recess of the cylinder opening forms an annular "settling platform", and large-particle dust and sand fall into the step dead angle after inertial impact, pre-separating more than 80% of coarse dust with a particle size greater than or equal to 50µm, significantly reducing the load on the rear filter screen and extending the filter screen cleaning cycle by three times.

[0053] When the device is daily backflushed for a short time or vibrated, the coarse dust accumulated in the settling platform automatically falls off and is discharged under the action of gravity, realizing "zero manual cleaning" and solving the pain point of regular brushing of the traditional horizontal collection port.

[0054] It ensures constant smoke collection efficiency in harsh environments and is isolated from the spray area of the annular spray array 234 to prevent interference from spray liquid.

[0055] In the event of a fire, the first collection cylinder 235 and the second collection cylinder 236 suck smoke into the inner cavity of the upper connecting disc 231; the smoke concentration signal is transmitted to the device body 11 through the inner cavity of the upper connecting disc 231, triggering satellite positioning marking and fire determination; after the threshold is reached, the annular spray array 234 is instantly started to spray downward, realizing "detection-positioning-extinguishing" integrated response.

[0056] In summary: the upper connecting disc 231 constitutes the top bearing layer of the connecting piece 23, the inner cavity is a smoke information processing channel, receiving smoke data from the first collection cylinder 235 and transmitting it to the analysis module of the device body 11; at the same time, it serves as the fixed base of the lower connecting disc 232.

[0057] The lower connecting disc 232 is bolted to the upper connecting disc 231 through the locking bolt 233, forming a double-layer sealed cavity; the bottom is provided with the annular spray array 234 and the first collection cylinder 235, realizing the physical integration of the spray outlet and the smoke inlet.

[0058] The locking bolt 233 can ensure that the upper connecting disc 231 and the lower connecting disc 232 remain structurally stable in high-heat and vibration environments, preventing misalignment or leakage caused by pressure during spraying.

[0059] The annular spray array 234 is located at the bottom outer circle of the lower connecting disc 232 and is in the form of an annular array opening, which sprays fire extinguishing agents such as water / foam downward accurately during a fire, forming a full-coverage fire suppression belt; the spraying action is triggered by the device body 11 according to the smoke concentration threshold collected by the first collection cylinder 235.

[0060] The second collection cylinder 236 and the first collection cylinder 235 are designed with functional redundancy, and can be replaced by different protection levels of the first collection cylinder 235 or the second collection cylinder 236 according to the scene: The material inlet of the second collection cylinder 236 is designed as a small-diameter and downward vertical cylindrical structure, and the vertical cylinder wall forms a "water curtain isolation", so that even if the top condensation beads are formed, they will slide down the outer surface of the cylinder wall and not enter the collection cavity; at this time, the small-diameter further utilizes the liquid surface tension to prevent suspended water droplets from being sucked into the airflow, avoiding sensor false alarms or short circuits.

[0061] The feed inlet extends downwards, forming a miniature "chimney effect." When the humidity is ≥90%RH, the internal air is continuously heated by the heating ring, and the humid hot water vapor sinks rapidly down and is discharged along the straight cylinder. The relative humidity inside the cavity can be stably maintained below 80%RH, ensuring the accuracy of smoke concentration measurement.

[0062] The cylindrical bottom of the feed inlet has a smooth hydrophobic coating, allowing dust to slide off with condensed water droplets, achieving daily self-rinsing and eliminating the need for manual wiping. Even after long-term operation, the air permeability remains ≥96%.

[0063] The bottom inlet of the first collection cylinder 235 is designed as a concave, large-diameter, vertically downward cylindrical structure, which reduces the resistance of the dust-laden airflow and increases the amount of smoke sampling under the same fan power consumption, ensuring that even in high-dust workshops, mine belt corridors and other places, the very early smoldering particles can still be captured within 10 seconds when the dust level is off the charts.

[0064] The concave opening of the cylinder forms an annular "settling platform". Large dust particles fall into the dead corner of the step after inertial impact, pre-separating more than 80% of coarse dust with a particle size ≥50µm, significantly reducing the load on the downstream filter screen and extending the filter screen cleaning cycle by 3 times.

[0065] The cylinder remains vertically downward. When the equipment is backflushed or vibrated for a short period of time each day, the coarse dust accumulated in the settling platform will automatically fall off and be discharged under the action of gravity, achieving "zero manual cleaning" and solving the pain point of the traditional horizontal collection port that requires regular brushing to remove dust.

[0066] It ensures constant smoke collection efficiency even in harsh environments; at the same time, it is isolated from the 234 spray zones of the annular spray array to prevent the spray liquid from interfering with the collection.

[0067] When a fire occurs, the first collection tube 235 and the second collection tube 236 draw smoke into the inner cavity of the upper connecting plate 231; the smoke concentration signal is transmitted to the device body 11 through the inner cavity of the upper connecting plate 231, triggering the satellite positioning marker and fire situation determination; after the determination reaches the threshold, the annular spray array 234 instantly starts spraying downwards, realizing an integrated response of "detection-positioning-fire extinguishing".

[0068] The base 121 and the slide rail 113 form a drawer-type interface. The labyrinth channel 123 on the upper surface of the detection component 122 and the sampling port 124 form a "two-stage airflow deceleration" structure, which can throw large particles such as dust and water vapor into the smoke inlet 112, allowing only 0.1–1µm combustion particles to enter the optical dark chamber, thus reducing the false alarm rate.

[0069] The sampling port 124 is aligned with the smoke inlet 112 and has a short-range direct connection, so the smoke can enter the optical cavity without having to bend at 90°. The flow resistance is reduced by 50%, and the response time is shortened from 15s to <8s under the same smoke concentration, so as to realize early alarm in the smoldering stage.

[0070] The entire smoke detection module 12 and the device body 11 are sealed with double silicone seals to prevent high dust and high humidity air from corroding the circuit board.

[0071] The antenna guiding assembly 132 has a cyclone tangential groove on its upper surface. After the airflow enters, it forms a centrifugal vortex. Dust particles with a diameter ≥10µm are thrown to the cavity wall of the through hole 133 and slide down to the bottom dust collection ring. The collection efficiency of particles larger than 0.3µm is 92%. There is no need to replace the HEPA filter, and it can achieve consumable-free operation.

[0072] Through hole 133 is a straight hole with a smooth hydrophobic coating, and dust falls freely along the wall to the annular temporary storage area of ​​pulse water spray hole 135; daily vibration or backflushing can remove the accumulated dust. After 6 months of continuous operation, the pressure drop increases by less than 3%, which completely solves the problem of dust accumulation and air duct blockage in traditional side holes.

[0073] Once the fire is confirmed, the Φ0.8mm pulse micro-holes at the four corners of the bottom of the 135 pulse water jet instantly open, forming a 30° solid cone water curtain under a water pressure of 0.4MPa. With a single-hole flow rate of 0.5L / min, it can cover a 1m² area within 10 seconds, rapidly reducing the smoke concentration by 60% and the local temperature by 20°C, thus buying crucial time for personnel to escape and for the subsequent start-up of the sprinkler system.

[0074] An infrared maze installed on the inner wall of through hole 133 outputs an analog value of dust concentration, and a satellite baseband chip installed in the inner cavity of base 131 outputs NMEA coordinates. The two are connected to the same low-power MCU through internal I²C. Once the smoke concentration exceeds the threshold, the MCU immediately writes the "fire alarm flag" into RAM and freezes the current latitude, longitude and floor elevation.

[0075] The MCU packages the "fire alarm flag + freeze coordinates + timestamp" into a compact 18-byte frame, and transmits it directly to the satellite or base station via the four-arm spiral antenna of the built-in NB-IoT radio frequency shared satellite positioning signal transmission module 13 after switching by a duplexer. The packet format is compatible with the fire protection IoT protocol. After the platform receives the packet, a pop-up window appears within seconds, and a red flashing dot appears directly on the map, without the need for "address matching" in the background.

[0076] The antenna guiding component 132 can function as an antenna while guiding the smoke in. The pulse water spray nozzle 135 is located at the bottom. When spraying water, it cools the whole machine and prevents the GPS crystal oscillator from drifting due to high temperature, ensuring that the coordinate accuracy is ≤2m.

[0077] "Smoke indicates location, location indicates alarm, alarm indicates visibility"—even before any open flames are visible on site, the fire command center can already pinpoint the exact floor and room on the map, achieving true "coordinate-level" fire alarm.

[0078] The above describes the entire working principle of this invention.

[0079] In this invention, the installation, connection, or setting methods of all the above components are common mechanical methods, and the specific structure, model, and coefficient indicators of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0080] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

[0081] In this invention, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are merely used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A fire smoke alarm device based on satellite positioning function, comprising a smoke alarm (1) and a base (2), characterized in that, The smoke alarm (1) is mounted on a base (2). The smoke alarm (1) includes a device body (11) and a smoke detection module (12) installed on the side end face of the device body (11). A satellite positioning signal transmission module (13) is installed on one side of the device body (11). The base (2) is mounted on the lower end face of the device body (11). The base (2) includes a base body (21) and an outer ring interface (22) opened on the outer ring of the base body (21). A connector (23) is installed at the bottom of the base body (21).

2. A fire smoke alarm device based on satellite positioning function according to claim 1, characterized in that, The device body (11) includes a top cover (111) and a smoke inlet (112) opened on the upper surface of the top cover (111). A slide rail (113) is opened on the outer end wall of the top cover (111).

3. A fire smoke alarm device based on satellite positioning function according to claim 2, characterized in that, The device body (11) also includes a bottom ring (114) installed on the bottom outer ring of the top cover (111), and a support platform (115) is installed at the bottom middle position of the bottom ring (114).

4. A fire smoke alarm device based on satellite positioning function according to claim 3, characterized in that, The device body (11) also includes a central hole (116) located at the center of the support platform (115).

5. A fire smoke alarm device based on satellite positioning function according to claim 1, characterized in that, The smoke detection module (12) includes a base (121) and a detection component (122) installed on the upper surface of the base (121). A maze channel (123) is opened horizontally on the upper surface of the detection component (122), and a sampling port (124) is opened in the middle of the upper surface of the maze channel (123).

6. A fire smoke alarm device based on satellite positioning function according to claim 5, characterized in that, One end of the maze passage (123) is inserted into the inner cavity of the slide rail (113), and the sampling port (124) is connected to the smoke inlet (112).

7. A fire smoke alarm device based on satellite positioning function according to claim 1, characterized in that, The satellite positioning signal transmission module (13) includes a transmission module body (131) and an antenna guide assembly (132) installed on the upper surface of the transmission module body (131). A through hole (133) is opened in the inner cavity of the antenna guide assembly (132). A base plate (134) is installed at the bottom of the transmission module body (131). Pulse water jet holes (135) are opened at the four corners of the bottom edge of the base plate (134). The through hole (133) penetrates inward through the inner cavity of the transmission module body (131) and the base plate (134). The through hole (133) is connected to the inner cavity of the pulse water jet hole (135).

8. A fire smoke alarm device based on satellite positioning function according to claim 1, characterized in that, The connector (23) includes an upper connecting plate (231) and a lower connecting plate (232) installed on the lower end face of the upper connecting plate (231). The outer ring edges of the upper connecting plate (231) and the lower connecting plate (232) are bolted together by locking bolts (233). The bottom outer ring of the lower connecting plate (232) has an annular spray array (234), and the bottom middle position of the lower connecting plate (232) has a first collection cylinder (235).

9. A fire smoke alarm device based on satellite positioning function according to claim 8, characterized in that, The connector (23) also includes a second collection tube (236) that can replace the first collection tube (235), and both the first collection tube (235) and the second collection tube (236) are connected to the inner cavity of the annular spray array (234).

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