Smoke sensor device based on Bluetooth connection

Abstract

The utility model relates to a smoke sensor device based on Bluetooth connection, which relates to the smoke detection field, and comprises a base plate, a fixing frame, a power supply, a smoke detection assembly, a fault detection assembly and a circuit board, the fixing frame and the power supply are fixedly connected to the upper part of the base plate, and the fault detection assembly comprises a first infrared receiver. The first infrared receiver is fixedly connected to the fixing frame, the smoke detection assembly comprises an infrared emitter and a second infrared receiver, the infrared emitter is fixedly connected to the fixing frame, and the first infrared receiver and the infrared emitter are oppositely arranged; according to the arrangement, the smoke detection assembly can detect smoke and give an alarm, and meanwhile, the fault detection assembly can detect whether the device has a fault or not, so that the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke detection, in particular to a smoke sensor device based on Bluetooth connection. Background Art

[0002] Smoke alarms are another name for smoke detectors. Smoke alarms monitor smoke concentrations to prevent fires and are widely used in various fire alarm systems. Smoke alarms come in two types: ionization alarms and photoelectric alarms. Ionization alarms contain radioactive material in their sensors that generate an electric current. When smoke particles enter the sensor, they disrupt the current flow, causing the alarm to sound. Photoelectric alarms emit an infrared beam. When smoke particles are present in the room, the beam scatters onto the sensor, and the alarm sounds when the sensor detects a certain amount of light.

[0003] Therefore, a Chinese invention patent with a publication date of February 12, 2021 and publication number CN112365672A proposes an intelligent smoke alarm, which includes a shell, an alarm indicator light, a speaker and a controller. A smoke sensor module and a controller are installed inside the shell. The controller is arranged inside the shell, and the alarm indicator light and the speaker are arranged on the surface of the shell. The smoke sensor module has a transmitting end and a receiving end, which can detect whether there is smoke in the detection area and whether the temperature is normal.

[0004] When in use, the transmitter can emit an infrared beam. Under normal circumstances, the receiver cannot receive the infrared beam. When there is smoke, the infrared beam is scattered by the smoke. The receiver receives the infrared beam and transmits the sensing data signal to the controller. The controller transmits the data to the cloud in real time. If the air smoke exceeds the set concentration or the ambient temperature is abnormal, the controller will automatically turn on the sound and light alarm, and the controller will notify the terminal device.

[0005] Regarding the above-mentioned related technologies, smoke alarms may malfunction during operation. Although staff will conduct regular inspections, if the smoke alarm malfunctions, the staff will not be able to obtain information in the first time. During the time from the failure to the next inspection, the smoke alarm cannot detect smoke and cannot alarm, posing a safety hazard. Utility Model Content

[0006] In order to improve the safety of smoke alarm detection, the utility model provides a smoke sensor device based on Bluetooth connection.

[0007] The utility model provides a smoke sensor device based on Bluetooth connection, which adopts the following technical solutions:

[0008] A smoke sensor device based on Bluetooth connection includes a base plate, a fixing frame, a power supply, a smoke detection component, a fault detection component and a circuit board, wherein the fixing frame and the power supply are both fixedly connected to the upper part of the base plate, the fault detection component includes a first infrared receiver, the first infrared receiver is fixedly connected to the fixing frame, the smoke detection component includes an infrared transmitter and a second infrared receiver, the infrared transmitter is fixedly connected to the fixing frame, the first infrared receiver and the infrared transmitter are arranged opposite to each other, the first infrared receiver and the infrared transmitter are located on the same straight line, the circuit board is fixedly connected to the base plate, a central processing unit is provided on the circuit board, the power supply is electrically connected to the first infrared receiver and the central processing unit respectively, the central processing unit is electrically connected to the first infrared receiver, the second infrared receiver is fixedly connected to the fixing frame, the second infrared receiver is electrically connected to the central processing unit, and the second infrared receiver and the infrared transmitter are not on the same straight line.

[0009] By adopting the above technical solution, when the smoke sensor device is working normally, the infrared transmitter normally emits infrared rays, and the first infrared receiver can receive the infrared rays emitted by the infrared transmitter, indicating that the infrared transmitter is working normally;

[0010] When the infrared transmitter fails, the infrared transmitter cannot emit infrared rays, the first infrared receiver cannot receive infrared rays, and the first infrared receiver transmits a signal to the central processor, detecting that the smoke sensor device has failed.

[0011] When the smoke sensor device is in normal working condition, the second infrared receiver cannot receive infrared rays because the infrared transmitter and the second infrared receiver are not on the same straight line. When smoke enters the infrared path emitted by the infrared transmitter, the smoke will scatter the infrared rays. At this time, the second infrared receiver can receive the infrared rays. The second infrared receiver transmits the signal to the central processor and detects the presence of smoke in the environment.

[0012] Furthermore, the fault detection component also includes a temperature sensor, which is arranged on the circuit board and electrically connected to the central processing unit.

[0013] By adopting the above technical solution, the temperature sensor can detect the temperature of the circuit board and the surrounding area in real time. If a short circuit or other fault occurs during the operation of the circuit board or other parts, the temperature may rise. After the temperature sensor detects the temperature rise, it transmits the signal to the central processor, detecting that a fault has occurred in the smoke sensor device.

[0014] Furthermore, the bottom surface of the fixing bracket is fixedly connected to the base plate, and the fixing bracket has a first inclined surface and a second inclined surface, the first inclined surface is provided with a first protrusion block, the first protrusion block is provided with a first mounting hole, the second inclined surface is provided with a second protrusion block, the second protrusion block is provided with a second mounting hole and a third mounting hole, the axes of the first mounting hole and the second mounting hole coincide, the axes of the first mounting hole and the third mounting hole are not on the same straight line, the infrared transmitter is provided in the first mounting hole, the first infrared receiver is installed in the second mounting hole, and the second infrared receiver is installed in the third mounting hole.

[0015] By adopting the above technical solution, the infrared transmitter, the first infrared receiver and the second infrared receiver are respectively installed in the first mounting hole, the second mounting hole and the third mounting hole. During maintenance and replacement, there is no need to reposition each sensor. The sensor to be replaced is pulled out from the mounting hole and the new sensor is plugged in to complete the replacement. The position is accurate, the disassembly and assembly are convenient, and time and labor costs are saved.

[0016] Furthermore, a smoke collection component is also provided on the base plate, and the smoke collection component includes a maze top cover and a smoke inlet net. A plurality of maze baffles are provided at the lower part of the maze top cover, and the smoke inlet net is arranged around the plurality of maze baffles. The maze top cover is detachably connected to the base plate, and the maze baffles are on the outside of the fixed frame.

[0017] By adopting the above technical solution, when the smoke sensor device is working normally, the smoke inlet net can block most of the dust particles in the air, reducing the dust particles from entering the interior and affecting the normal operation of the smoke sensor device. Smoke can enter the smoke inlet net and then enter the interior through the maze baffle. The maze baffle can block external light and reduce the probability of excessive light affecting the reception of infrared rays.

[0018] Furthermore, a shell is provided on the bottom plate, and the shell is provided on the outside of the smoke collection component. The shell is detachably connected to the bottom plate, and a ventilation hole is provided on the shell.

[0019] By adopting the above technical solution, when a fire occurs, smoke enters the interior through the ventilation holes provided on the outer shell. The infrared rays emitted by the internal infrared transmitter are scattered by the smoke and can be received by the second infrared receiver. The central processing unit can detect the occurrence of a fire. At the same time, the outer shell can protect the internal structure and reduce the probability of failure.

[0020] Furthermore, a Bluetooth transmission module is provided on the circuit board, the Bluetooth transmission module is electrically connected to the central processing unit, and the Bluetooth transmission module is electrically connected to the user terminal.

[0021] By adopting the above technical solution, when the first infrared receiver cannot receive infrared rays or the temperature sensor detects an increase in temperature, it indicates that there is a fault inside the smoke sensor device. At this time, the central processing unit controls the Bluetooth transmission module to send a signal to the user terminal, and the staff can receive the signal as soon as possible and repair the smoke sensor device in time. When the second infrared receiver receives infrared rays, it indicates that a fire may have occurred. The central processing unit controls the Bluetooth transmission module to send a signal to the user terminal, and the staff can also go to the target location to check the situation as soon as possible.

[0022] Furthermore, an alarm indicator light and a buzzer are provided on the housing. The alarm indicator light is electrically connected to the power supply and the central processing unit, and the buzzer is electrically connected to the power supply and the central processing unit.

[0023] By adopting the above technical solution, when smoke enters the smoke collection component, the smoke scatters the infrared rays, and the second infrared receiver can receive the infrared rays. The second infrared receiver transmits the signal to the central processing unit, and the central processing unit controls the alarm indicator light to flash, and the buzzer sounds an alarm at the same time.

[0024] Furthermore, the labyrinth top cover and the shell are both provided with connecting pieces, the ends of the connecting pieces are provided with buckles, and the bottom plate is provided with bayonets adapted to the connecting pieces, and the labyrinth top cover and the shell are fixed to the bottom plate through the connecting pieces.

[0025] By adopting the above technical solution, when repairing and replacing parts, the maze top cover or shell can be removed from the bottom plate by pressing the buckle, which is easy to operate and convenient to disassemble and install.

[0026] In summary, the present invention has at least one of the following beneficial technical effects:

[0027] 1. By setting up a fault detection component, the device can automatically detect when a fault occurs and send a signal to the user terminal. Staff can receive the signal immediately and repair the smoke sensor device in time, reducing the probability of the device failing to detect smoke in the event of a fire and improving safety performance.

[0028] 2. Through the setting of the smoke detection component, when a fire occurs, when smoke enters the smoke collection component, the smoke has a scattering effect on the infrared light, which can be received by the second infrared receiver. The second infrared receiver transmits the signal to the central processing unit. The central processing unit controls the alarm indicator to flash, and at the same time, the buzzer sounds an alarm to alert the people on the scene, and sends a signal to the user terminal so that they can go to extinguish the fire as soon as possible.

[0029] 3. The smoke collection mechanism is set up to reduce the entry of dust particles into the interior that may affect the normal operation of the smoke sensor device. Smoke can enter through the smoke inlet net and then enter the interior through the maze baffle. The maze baffle can block external light and reduce the probability of excessive light affecting infrared reception. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of the smoke collection assembly and the base plate in the embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the structure of the smoke collection component in an embodiment of the present application;

[0033] Figure 4 is a schematic diagram of the fixing frame structure of an embodiment of the present application;

[0034] Figure 5 This is a schematic structural diagram of a smoke collection component according to an embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of the matching structure of the labyrinth top cover and the labyrinth baffle in an embodiment of the present application;

[0036] Figure 7 It is a schematic diagram of the shell structure of an embodiment of the present application.

[0037] Figure numerals: 100, base plate; 110, bayonet; 200, fixing frame; 210, first protrusion; 211, first mounting hole; 220, second protrusion; 221, second mounting hole; 222, third mounting hole; 300, power supply; 400, smoke detection assembly; 410, infrared transmitter; 420, second infrared receiver; 500, fault detection assembly; 510, first infrared receiver; 520, temperature sensor; 600, circuit board; 700, smoke collection assembly; 710, labyrinth top cover; 720, labyrinth baffle; 730, smoke inlet net; 800, housing; 810, alarm indicator light; 820, buzzer; 830, vent; 900, connector; 910, buckle. DETAILED DESCRIPTION

[0038] The following combination Figures 1 to 7 The utility model is described in further detail.

[0039] Reference Figures 1 to 3A smoke sensor device based on Bluetooth connection includes a base plate 100 for fixing on the wall, a fixing bracket 200 for installing the sensor, a power supply 300, a smoke detection component 400 for detecting smoke, a fault detection component 500 for detecting whether the device has a fault, a circuit board 600, a smoke collection component 700 for collecting smoke and blocking light, a shell 800 for protecting the internal structure, and an alarm indicator 810 and a buzzer 820 for alarming. The circuit board 600 is provided with a central processor. During the operation of the device, if an internal fault occurs, the fault detection component 500 can A fault is detected and a signal is transmitted to the circuit board 600. The circuit board 600 can send a fault signal to the user terminal, so that the staff can receive the signal immediately and repair the smoke sensor device in time. If a fire occurs and smoke enters the smoke detection component 400, the smoke detection component 400 uses the scattering energy of light to detect the smoke. After detecting the smoke, the signal is transmitted to the circuit board 600. The circuit board 600 can send a smoke signal to the user terminal. At the same time, the alarm indicator light 810 flashes and the buzzer 820 sounds an alarm to remind the personnel on site to extinguish the fire in time, thereby reducing the probability of the fire spreading.

[0040] Reference Figure 3 The power supply 300 and the circuit board 600 are both arranged on the base plate 100. The power supply 300 is replaceable. The circuit board 600 is detachably connected to the base plate 100. The shape of the base plate 100 is set to be circular. A plurality of bayonet holes 110 are provided on the base plate 100. The shell 800 is set on the upper part of the base plate 100. A connecting piece 900 is provided on the shell 800. A buckle 910 is provided at the end of the connecting piece 900. The buckle 910 is adapted to the bayonet hole 110 on the base plate 100. The shell 800 is detachably connected to the base plate 100. A vent 830 is provided on the shell 800. Smoke can enter the interior of the shell 800 through the vent 830.

[0041] Reference Figure 5 and Figure 6 The smoke collection component 700 is also arranged on the base plate 100. The smoke collection component 700 is arranged inside the shell 800. The smoke collection component 700 includes a labyrinth top cover 710 and a smoke inlet net 730. A plurality of labyrinth baffles 720 are arranged at the lower part of the labyrinth top cover 710. The labyrinth top cover 710 is set as a circular cover. The smoke inlet net 730 is sleeved around the plurality of labyrinth baffles 720. The labyrinth top cover 710 is detachably connected to the base plate 100. Each labyrinth baffle 720 includes two rectangular pieces. The sides of the two rectangular pieces are fixedly connected. There is an angle between the two rectangular pieces. Preferably, the angle is set to 90 degrees. After the light is irradiated into the interior of the shell 800 through the vent 830 of the shell 800, it can be blocked by the labyrinth baffle 720 with the angle, thereby reducing the influence of light on the smoke detection component 400.

[0042] In this way, the shell 800 can protect the smoke collection component 700 and other internal structures. When a fire occurs, smoke enters the interior through the vent 830 of the shell 800. The smoke entering the interior enters the smoke collection component 700 through the smoke inlet net 730 and the maze baffle 720. At the same time, the maze baffle 720 can block external light, but will not block the entry of smoke, reducing the impact of excessive light on the accuracy of smoke detection. The smoke inlet net 730 can reduce the impact of dust particles entering the interior and affecting the normal operation of the smoke sensor device.

[0043] Reference Figure 3 and Figure 4 The fixing frame 200 is fixedly connected to the base plate 100, and the fixing frame 200 is located inside the smoke collection assembly 700. The fixing frame 200 is in the shape of a triangular prism, and the front view of the fixing frame 200 is an isosceles triangle. The fixing frame 200 has a first inclined surface and a second inclined surface. The first inclined surface is provided with a first protruding block 210, and the first protruding block 210 is provided with a first mounting hole 211. The second inclined surface is provided with a second protruding block 220, and the second protruding block 220 is provided with a second mounting hole 221 and a third mounting hole 222. The axes of the first mounting hole 211 and the second mounting hole 221 coincide, and the axes of the first mounting hole 211 and the third mounting hole 222 are not on the same straight line.

[0044] Reference Figure 3 The smoke detection component 400 and the fault detection component 500 are both arranged on the fixing frame 200. The smoke detection component 400 includes an infrared transmitter 410 and a second infrared receiver 420. The fault detection component 500 includes a first infrared receiver 510 and a temperature sensor 520. The temperature sensor 520 is arranged on the circuit board 600 and is electrically connected to the central processing unit. The infrared transmitter 410 is arranged in the first mounting hole 211, the first infrared receiver 510 is installed in the second mounting hole 221, and the second infrared receiver 420 is installed in the third mounting hole 222. The central processing unit is electrically connected to the first infrared receiver 510, and the second infrared receiver 420 is fixedly connected to the fixing frame 200. The second infrared receiver 420 is electrically connected to the central processing unit. After installation, the second infrared receiver 420 and the infrared transmitter 410 are not on the same straight line. The first infrared receiver 510 and the infrared transmitter 410 are installed opposite to each other and are on the same straight line.

[0045] In this way, when repairing and replacing the infrared transmitter, the first infrared receiver 510 and the second infrared receiver 420, the sensor to be replaced is pulled out from the mounting hole, and the new sensor is plugged in to complete the replacement. The position is accurate and the disassembly and assembly are convenient. There is no need to reposition each sensor, which reduces the steps of repositioning and alignment during repair and replacement, saves the time of maintenance personnel, and also improves the maintenance speed.

[0046] The infrared transmitter 410, the first infrared receiver 510, and the second infrared receiver 420 are installed in the first mounting hole 211, the second mounting hole 221, and the third mounting hole 222, respectively. When smoke occurs in a fire, the smoke enters the smoke collection assembly 700, and the smoke blocks the infrared rays emitted by the infrared transmitter 410, scattering the infrared rays. The scattered infrared rays can be received by the second infrared receiver 420, and the second infrared receiver 420 transmits a signal to the central processing unit. The central processing unit can determine whether a fire has occurred based on whether the second infrared receiver 420 receives the infrared rays.

[0047] When no fire occurs and the device is working normally, the infrared rays emitted by the infrared transmitter 410 can be received by the first infrared receiver 510. When the infrared transmitter 410 fails, the infrared transmitter 410 cannot emit infrared rays, and the first infrared receiver 510 cannot receive infrared rays. The first infrared receiver 510 transmits a signal to the central processing unit, and the central processing unit can determine whether the device has a fault by whether the first infrared receiver 510 receives infrared rays.

[0048] Reference Figure 3 The circuit board 600 is also provided with a Bluetooth transmission module, which is electrically connected to the central processing unit, and the Bluetooth transmission module is electrically connected to the user terminal.

[0049] In this way, when the first infrared receiver 510 cannot receive infrared rays or the temperature sensor 520 detects a temperature increase, or when the second infrared receiver 420 receives infrared rays, it indicates that there is a fault inside the smoke sensor device or a fire has occurred. The first infrared receiver 510 or the second infrared receiver 420 transmits a signal to the central processor, and the central processor controls the Bluetooth transmission module to send a signal to the user terminal. The staff can receive the signal in the first time and repair the smoke sensor device or extinguish the fire in time.

[0050] Reference Figure 7An alarm indicator light 810 and a buzzer 820 are provided on the shell 800. The alarm indicator light 810 is electrically connected to the power supply 300 and the central processing unit, and the buzzer 820 is electrically connected to the power supply 300 and the central processing unit; the alarm indicator light 810 is provided at one end of the shell 800 away from the bottom plate 100, and the buzzer 820 is provided on the inner side or outer side of the shell 800.

[0051] In this way, when there is smoke during a fire, the smoke will scatter the infrared rays, and the second infrared receiver 420 will be able to receive the infrared rays. The central processing unit will detect the smoke, and the central processing unit will control the alarm indicator light 810 to flash. At the same time, the buzzer 820 will sound an alarm to remind the personnel on site to put out the fire in time, thereby reducing the probability of the fire spreading.

[0052] The implementation principle of this embodiment is as follows: if an internal fault occurs in the device during operation, the fault detection component 500 can detect the fault and transmit a signal to the circuit board 600. The circuit board 600 can send a fault signal to the user terminal, so that the staff can receive the signal immediately and repair the smoke sensor device in time; if a fire occurs and smoke enters the smoke detection component 400, the smoke detection component 400 uses the scattering energy of light to detect the smoke. After detecting the smoke, it transmits a signal to the circuit board 600. The circuit board 600 can send a smoke signal to the user terminal. At the same time, the alarm indicator light 810 flashes and the buzzer 820 sounds an alarm to remind the personnel on site to extinguish the fire in time, thereby reducing the probability of fire spreading.

[0053] The outer shell 800 can protect the smoke collection component 700 and other internal structures. When a fire occurs, smoke enters the interior through the vent 830 of the outer shell 800. The smoke entering the interior enters the smoke collection component 700 through the smoke inlet net 730 and the maze baffle 720. At the same time, the maze baffle 720 can block external light and reduce the impact of excessive light on the accuracy of smoke detection. The smoke inlet net 730 can reduce the impact of dust particles entering the interior and affecting the normal operation of the smoke sensor device.

[0054] When repairing or replacing the infrared sensor, the first infrared receiver 510, and the second infrared receiver 420, the sensor to be replaced is pulled out from the mounting hole, and the new sensor is plugged in to complete the replacement. The position is accurate and the assembly and disassembly are convenient. There is no need to reposition each sensor, which reduces the steps of repositioning and alignment during repair and replacement, saves the time of maintenance personnel, and also improves the maintenance speed.

[0055] The infrared transmitter 410, the first infrared receiver 510, and the second infrared receiver 420 are installed in the first mounting hole 211, the second mounting hole 221, and the third mounting hole 222, respectively. When smoke occurs in a fire, the smoke enters the smoke collection assembly 700, and the smoke blocks the infrared rays emitted by the infrared transmitter 410, scattering the infrared rays. The scattered infrared rays can be received by the second infrared receiver 420, and the second infrared receiver 420 transmits a signal to the central processing unit. The central processing unit can determine whether a fire has occurred based on whether the second infrared receiver 420 receives the infrared rays.

[0056] When no fire occurs and the device is working normally, the infrared rays emitted by the infrared transmitter 410 can be received by the first infrared receiver 510. When the infrared transmitter 410 fails, the infrared transmitter 410 cannot emit infrared rays, and the first infrared receiver 510 cannot receive infrared rays. The first infrared receiver 510 transmits a signal to the central processing unit, and the central processing unit can determine whether the device has a fault by whether the first infrared receiver 510 receives infrared rays.

[0057] When a fire is detected or the device fails, the central processing unit controls the Bluetooth transmission module to send a signal to the user terminal. The staff can receive the signal immediately and repair the smoke sensor device or extinguish the fire in time.

[0058] When there is smoke during a fire, the smoke scatters infrared rays, and the second infrared receiver 420 can receive the infrared rays. The central processing unit detects the smoke, and the central processing unit controls the alarm indicator light 810 to flash. At the same time, the buzzer 820 sounds an alarm to remind people on site to put out the fire in time, thereby reducing the probability of the fire spreading.

[0059] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A smoke sensor device based on Bluetooth connection, characterized in that: The invention comprises a base plate (100), a fixing frame (200), a power supply (300), a smoke detection component (400), a fault detection component (500) and a circuit board (600), wherein the fixing frame (200) and the power supply (300) are both fixedly connected to the upper part of the base plate (100), the fault detection component (500) comprises a first infrared receiver (510), and the first infrared receiver (510) is fixedly connected to the fixing frame (200), the smoke detection component (400) comprises an infrared transmitter (410) and a second infrared receiver (420), the infrared transmitter (410) is fixedly connected to the fixing frame (200), and the first infrared receiver (510) and the infrared transmitter are connected to each other. The infrared receiver (510) and the infrared transmitter (410) are arranged opposite to each other, the first infrared receiver (510) and the infrared transmitter (410) are located on the same straight line, the circuit board (600) is fixedly connected to the base plate (100), a central processing unit is arranged on the circuit board (600), the power supply (300) is electrically connected to the first infrared receiver (510) and the central processing unit respectively, the central processing unit is electrically connected to the first infrared receiver (510), the second infrared receiver (420) is fixedly connected to the fixing frame (200), the second infrared receiver (420) is electrically connected to the central processing unit, and the second infrared receiver (420) and the infrared transmitter (410) are not on the same straight line.

2. The smoke sensor device based on Bluetooth connection according to claim 1, characterized in that: The fault detection component (500) further comprises a temperature sensor (520), wherein the temperature sensor (520) is arranged on the circuit board (600), and the temperature sensor (520) is electrically connected to the central processing unit.

3. The smoke sensor device based on Bluetooth connection according to claim 1, characterized in that: The bottom surface of the fixing frame (200) is fixedly connected to the bottom plate (100), and the fixing frame (200) has a first inclined surface and a second inclined surface, the first inclined surface is provided with a first protruding block (210), the first protruding block (210) is provided with a first mounting hole (211), the second inclined surface is provided with a second protruding block (220), the second protruding block (220) is provided with a second mounting hole (221) and a third mounting hole (222), the axes of the first mounting hole (211) and the second mounting hole (221) coincide, and the axes of the first mounting hole (211) and the third mounting hole (222) are not on the same straight line, the infrared transmitter (410) is provided in the first mounting hole (211), the first infrared receiver (510) is installed in the second mounting hole (221), and the second infrared receiver (420) is installed in the third mounting hole (222).

4. The smoke sensor device based on Bluetooth connection according to any one of claims 1 to 3, characterized in that: A smoke collection assembly (700) is further provided on the bottom plate (100), and the smoke collection assembly (700) includes a labyrinth top cover (710) and a smoke inlet net (730). A plurality of labyrinth baffles (720) are provided at the lower portion of the labyrinth top cover (710), and the smoke inlet net (730) is sleeved around the plurality of labyrinth baffles (720). The labyrinth top cover (710) is detachably connected to the bottom plate (100), and the labyrinth baffles (720) are located outside the fixing frame (200).

5. The smoke sensor device based on Bluetooth connection according to claim 4, characterized in that: A housing (800) is also provided on the bottom plate (100), the housing (800) being provided outside the smoke collection assembly (700), the housing (800) being detachably connected to the bottom plate (100), and a vent (830) being provided on the housing (800).

6. The smoke sensor device based on Bluetooth connection according to claim 5, characterized in that: An alarm indicator light (810) and a buzzer (820) are provided on the housing (800). The alarm indicator light (810) is electrically connected to the power supply (300) and the central processing unit, and the buzzer (820) is electrically connected to the power supply (300) and the central processing unit.

7. The smoke sensor device based on Bluetooth connection according to claim 5, characterized in that: The labyrinth top cover (710) and the shell (800) are both provided with a connecting piece (900), a buckle (910) is provided at the end of the connecting piece (900), and a bayonet (110) adapted to the connecting piece (900) is provided on the bottom plate (100), and the labyrinth top cover (710) and the shell (800) are fixed to the bottom plate (100) via the connecting piece (900).

8. The smoke sensor device based on Bluetooth connection according to any one of claims 1 to 3, characterized in that: A Bluetooth transmission module is provided on the circuit board (600), the Bluetooth transmission module is electrically connected to the central processing unit, and the Bluetooth transmission module is electrically connected to the user terminal.

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