Double-light-source fire hazard detector

Abstract

The utility model belongs to the technical field of fire hazard monitoring, and particularly relates to a double-light-source fire hazard detector. Comprising a bottom shell, a PCB is installed in the bottom shell, an installation groove is formed in the middle of the interior of the bottom shell, and a detection cavity is formed between the installation groove and the PCB; a particle sensor and an air suction fan are mounted on the PCB, and the particle sensor and the air suction fan are both electrically connected with the PCB; the particle sensor and the suction fan are located in the detection cavity; and an upper cover is fixedly inserted into the bottom shell. According to the utility model, the particle sensor and the suction fan are convenient to mount and dismount; according to the utility model, particles can be actively sucked in, so that rapid detection is realized; according to the utility model, detection accuracy can be improved and rapid detection can be realized; normal smoke particles and interference particles can be distinguished through detection of two different light sources, namely the infrared light emitting assembly and the blue light emitting assembly, so that the false alarm prevention effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire hazard monitoring, and in particular relates to a double-light source fire hazard detector. Background Art

[0002] Fire hazard monitoring refers to the process of real-time monitoring and analysis of potential fire hazards in various systems or equipment, mainly including temperature monitoring, gas monitoring, particle monitoring, etc. Particle monitoring refers to the detection of tiny solid particles or smoke that may be generated when the system overheats or an overheating event occurs. These particles are usually caused by material combustion, thermal decomposition or other chemical reactions, and may be a precursor to fire. Particle monitoring plays an important role in fire hazard monitoring and early warning.

[0003] The Chinese patent with application number 202310842714.6 relates to an active cable tunnel environmental safety monitoring device, including a shell; a detection component for smoke detection and toxic and harmful gas detection is provided on the gas input end of the shell: a switch component is provided on the gas input end of the shell and is located between the shell and the detection component; an air outlet component is provided on the gas output end of the shell; a power supply component is provided in the shell; the power supply component is electrically connected to the detection component, the switch component and the air outlet component respectively; by adopting this scheme, the detection accuracy and positioning accuracy of the active cable tunnel environmental safety monitoring device can be improved during the detection process, the heat is dissipated for the components inside the shell, and when there are safety hazards in the cable tunnel environment, an alarm can be given in time to avoid accidents such as fire.

[0004] Common detection equipment based on particle sensors has many components and is inconvenient to disassemble and assemble. At the same time, how to achieve rapid detection and thus provide early warning is also one of the important factors in measuring the performance of detection equipment. In some more complex environments, the presence of dust and other particles close to smoke particles may cause false alarms. Utility Model Content

[0005] In view of the above-mentioned shortcomings, the utility model provides a dual-light source fire hazard detector, which facilitates the installation and disassembly of particle sensors and intake fans; at the same time, the utility model can actively inhale particles through the cooperation of particle sensors and intake fans, thereby realizing rapid detection; the utility model can realize rapid detection while improving the accuracy of detection; the utility model can distinguish between normal smoke particles and interference particles through detection with two different light sources, namely infrared light emitting components and blue light emitting components, thereby realizing the effect of preventing false alarms.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A dual-light source fire hazard detector, comprising a bottom shell, a PCB circuit board is installed in the bottom shell, a mounting groove is provided in the middle of the bottom shell, and a detection cavity is formed between the mounting groove and the PCB circuit board; a particle sensor and an air intake fan are installed on the PCB circuit board, and the particle sensor and the air intake fan are electrically connected to the PCB circuit board; the particle sensor and the air intake fan are located in the detection cavity; an upper cover is fixedly plugged on the bottom shell;

[0008] The PCB circuit board is provided with a PCB board surface air inlet hole, and the PCB board surface air inlet hole is connected to the detection cavity; a diffusion hole is provided on one side of the bottom shell, and the diffusion hole is connected to the detection cavity; under the action of the suction fan, particles enter the detection cavity from the PCB board surface air inlet hole, and are discharged from the diffusion hole after being detected by the particle sensor.

[0009] Furthermore, the upper cover is provided with a shell air inlet hole.

[0010] Furthermore, a communication reserved opening is opened on one side of the bottom shell, a communication interface module is installed on the PCB circuit board, and the communication interface module is electrically connected to the PCB circuit board; the communication interface module is plugged into the communication reserved opening.

[0011] Furthermore, the installation slot includes an air inlet slot, a detection slot and an exhaust slot which are connected in sequence; the air inlet slot is connected to the air inlet hole on the PCB board surface, and the exhaust slot is connected to the diffusion hole.

[0012] Furthermore, two air inlet grooves are provided; and two groups of air inlet holes on the PCB surface are provided, and each group of air inlet holes on the PCB surface is connected to the corresponding air inlet groove.

[0013] Furthermore, the particle sensor is located in the detection slot, and the air intake fan is located in the exhaust slot.

[0014] Furthermore, the particle sensor includes a sensor mounting plate, one side of which is mounted on a PCB circuit board, and the other side of the sensor mounting plate is mounted with an infrared light emitting component, a blue light emitting component and a receiving component; the center lines of the outgoing light of the infrared light emitting component and the blue light emitting component are axially symmetrically arranged relative to the light receiving center line of the receiving component.

[0015] Furthermore, a buzzer is installed on the PCB circuit board, and the buzzer is electrically connected to the PCB circuit board; a sound cavity is provided in the bottom shell, and the buzzer is located inside the sound cavity; the sound cavity is connected to the outside of the bottom shell through a connecting hole.

[0016] Furthermore, the PCB circuit board is installed with an LED indicator light, and the LED indicator light is electrically connected to the PCB circuit board; the LED indicator light passes through the upper cover and is arranged outward.

[0017] Furthermore, the PCB circuit board is also installed with a 4G antenna, and the 4G antenna passes through one side of the bottom shell and is arranged outward.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] (1) The utility model can form a detection cavity between the PCB circuit board and detect particles through the structural design of the installation groove, and it is also convenient to disassemble. The detection cavity can be flexibly disassembled, which is convenient for the installation and disassembly of the particle sensor and the suction fan, and the structure is compact. At the same time, the utility model can actively inhale particles through the cooperation of the particle sensor and the suction fan, thereby realizing rapid detection.

[0020] (2) The utility model adopts the structural design of two sets of air inlet slots, which can not only increase the particle intake amount and improve the detection accuracy, but also can quickly capture particles in different directions through different PCB board surface air inlet holes, further realizing rapid detection.

[0021] (3) The utility model detects through two different light sources, an infrared light emitting component and a blue light emitting component, and detects through a red and blue dual light source. By utilizing the different intensities of scattered light from different substances under the red and blue dual light sources, normal smoke particles and interference particles can be distinguished, thereby achieving an anti-false alarm effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the dispersed structure of a dual-light source fire hazard detector of the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the dispersed structure of a dual-light source fire hazard detector of the utility model. Figure 2 ;

[0024] Figure 3 This is a partial structural diagram of a dual-light source fire hazard detector of the utility model. Figure 1 ;

[0025] Figure 4 This is a partial structural diagram of a dual-light source fire hazard detector of the utility model. Figure 2 .

[0026] The reference numerals are as follows:

[0027] Bottom shell 100; diffusion hole 110; communication reserved port 130; PCB circuit board 200; PCB board surface air inlet 210; upper cover 300; shell air inlet 310; suction fan 400; particle sensor 500; sensor mounting plate 510; infrared light emitting component 520; blue light emitting component 530; receiving component 540; mounting slot 600; air inlet slot 610; detection slot 620; exhaust slot 630; sound cavity 640; communication interface module 700. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example

[0030] like Figure 1 to Figure 4 As shown, a dual-light source fire hazard detector includes a bottom shell 100, a PCB circuit board 200 is installed in the bottom shell 100, a mounting groove 600 is arranged in the middle of the bottom shell 100, and a detection cavity is formed between the mounting groove 600 and the PCB circuit board 200; a particle sensor 500 and an air intake fan 400 are installed on the PCB circuit board 200, and the particle sensor 500 and the air intake fan 400 are electrically connected to the PCB circuit board 200; the particle sensor 500 and the air intake fan 400 are located in the detection cavity; an upper cover 300 is fixedly plugged on the bottom shell 100;

[0031] The PCB circuit board 200 is provided with a PCB board surface air inlet hole 210, and the PCB board surface air inlet hole 210 is connected to the detection cavity; a diffusion hole 110 is provided on one side of the bottom shell 100, and the diffusion hole 110 is connected to the detection cavity; under the action of the suction fan 400, particles enter the detection cavity from the PCB board surface air inlet hole 210, and are discharged from the diffusion hole 110 after being detected by the particle sensor 500.

[0032] The utility model, through the structural design of the installation groove 600, can form a detection cavity between the PCB circuit board 200 to detect particles, and is also convenient for disassembly. The detection cavity can be flexibly disassembled, which is convenient for the installation and disassembly of the particle sensor 500 and the suction fan 400, and the structure is compact; at the same time, the utility model can actively inhale particles through the cooperation of the particle sensor 500 and the suction fan 400, thereby realizing rapid detection.

[0033] It is worth noting that the PCB circuit board 200 and the particle sensor 500 and other components are all powered by an external power supply, which will not be described in detail here.

[0034] Furthermore, the PCB circuit board 200 can be connected to the bottom case 100 by screws around the PCB circuit board 200 so as to be installed inside the bottom case 100, which is not further limited herein.

[0035] Furthermore, a shell air inlet hole 310 is opened on the upper cover 300 .

[0036] It is worth noting that the housing air inlet hole 310 is located above the PCB board surface air inlet hole 210, and the housing air inlet hole 310 can be set to a variety of shapes, such as a circle, which is not further limited here.

[0037] Furthermore, a communication reserved opening 130 is opened on one side of the bottom shell 100 , and a communication interface module 700 is installed on the PCB circuit board 200 , and the communication interface module 700 is electrically connected to the PCB circuit board 200 ; the communication interface module 700 is plugged into the communication reserved opening 130 .

[0038] It is worth noting that the communication interface module 700 can be plugged into a 485 communication interface or a CAN communication or network port to transmit monitoring information.

[0039] Furthermore, the installation slot 600 includes an air inlet slot 610 , a detection slot 620 and an exhaust slot 630 which are connected in sequence; the air inlet slot 610 is connected to the air inlet hole 210 on the PCB board surface, and the exhaust slot 630 is connected to the diffusion hole 110 .

[0040] Furthermore, two air inlet grooves 610 are provided; two groups of PCB board surface air inlet holes 210 are provided, and each group of PCB board surface air inlet holes 210 is connected to the corresponding air inlet groove 610 .

[0041] The utility model can not only increase the particle intake amount and improve the detection accuracy through the structural design of two groups of air inlet slots 610, but also quickly capture particles in different directions through different PCB board air inlet holes 210, thereby further realizing rapid detection.

[0042] Furthermore, the particle sensor 500 is located in the detection slot 620 , and the air intake fan 400 is located in the exhaust slot 630 .

[0043] Furthermore, the particle sensor 500 includes a sensor mounting plate 510, one side of which is mounted on the PCB circuit board 200, and the other side of the sensor mounting plate 510 is mounted with an infrared light emitting component 520, a blue light emitting component 530 and a receiving component 540; the center lines of the emitted light of the infrared light emitting component 520 and the blue light emitting component 530 are axially symmetrically arranged relative to the light receiving center line of the receiving component 540.

[0044] The utility model detects through two different light sources, an infrared light emitting component 520 and a blue light emitting component 530, and detects through a red and blue dual light source. By utilizing the different intensities of scattered light from different substances under the red and blue dual light sources, normal smoke particles and interference particles can be distinguished, thereby achieving an anti-false alarm effect.

[0045] Furthermore, a buzzer is installed on the PCB circuit board 200, and the buzzer is electrically connected to the PCB circuit board 200; a sound cavity 640 is provided in the bottom shell 100, and the buzzer is located inside the sound cavity 640; the sound cavity 640 is connected to the outside of the bottom shell 100 through a connecting hole.

[0046] It is worth mentioning that, through the structural design of the sound cavity 640, the buzzer can quickly transmit sound through the sound cavity 640, thereby giving an early warning.

[0047] Furthermore, the PCB circuit board 200 is installed with an LED indicator light, and the LED indicator light is electrically connected to the PCB circuit board 200 ; the LED indicator light passes through the upper cover 300 and is arranged outward.

[0048] It is worth noting that the LED indicator light can have a variety of different functions, such as indicating the operating status or indicating the detection status, etc., which are not further limited here.

[0049] Furthermore, the PCB circuit board 200 is also installed with a 4G antenna, and the 4G antenna passes through one side of the bottom shell 100 and is arranged outward.

[0050] The above content is a further detailed description of the utility model in combination with specific implementation examples. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, they can make several simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as belonging to the protection scope of the utility model.

[0051] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-light source fire hazard detector, characterized in that: The invention comprises a bottom shell (100), wherein a PCB circuit board (200) is installed in the bottom shell (100), a mounting groove (600) is provided in the middle of the inside of the bottom shell (100), and a detection cavity is formed between the mounting groove (600) and the PCB circuit board (200); a particle sensor (500) and an air intake fan (400) are installed on the PCB circuit board (200), and the particle sensor (500) and the air intake fan (400) are both electrically connected to the PCB circuit board (200); the particle sensor (500) and the air intake fan (400) are located in the detection cavity; and an upper cover (300) is fixedly plugged on the bottom shell (100); The PCB circuit board (200) is provided with a PCB board surface air inlet hole (210), and the PCB board surface air inlet hole (210) is communicated with the detection cavity; a diffusion hole (110) is provided on one side of the bottom shell (100), and the diffusion hole (110) is communicated with the detection cavity; under the action of the suction fan (400), particles enter the detection cavity from the PCB board surface air inlet hole (210), are detected by the particle sensor (500), and are discharged from the diffusion hole (110).

2. A dual-light source fire hazard detector according to claim 1, characterized in that: The upper cover (300) is provided with a shell air inlet hole (310).

3. A dual-light source fire hazard detector according to claim 1, characterized in that: A communication reserved opening (130) is provided on one side of the bottom shell (100); a communication interface module (700) is installed on the PCB circuit board (200); the communication interface module (700) is electrically connected to the PCB circuit board (200); and the communication interface module (700) is plugged into the communication reserved opening (130).

4. A dual-light source fire hazard detector according to claim 1, characterized in that: The installation slot (600) comprises an air intake slot (610), a detection slot (620) and an air exhaust slot (630) which are connected in sequence; the air intake slot (610) is connected to an air intake hole (210) on a PCB surface, and the air exhaust slot (630) is connected to a diffusion hole (110).

5. A dual-light source fire hazard detector according to claim 4, characterized in that: The air inlet grooves (610) are provided with two; the air inlet holes (210) on the PCB surface are provided with two groups, and each group of air inlet holes (210) on the PCB surface is connected to the corresponding air inlet groove (610).

6. A dual-light source fire hazard detector according to claim 4, characterized in that: The particle sensor (500) is located in the detection slot (620), and the air intake fan (400) is located in the exhaust slot (630).

7. A dual-light source fire hazard detector according to claim 1, characterized in that: The particle sensor (500) comprises a sensor mounting plate (510), one side of the sensor mounting plate (510) is mounted on a PCB circuit board (200), and the other side of the sensor mounting plate (510) is mounted with an infrared light emitting component (520), a blue light emitting component (530) and a receiving component (540); the center lines of the emitted light of the infrared light emitting component (520) and the blue light emitting component (530) are arranged axially symmetrically with respect to the light receiving center line of the receiving component (540).

8. The dual-light source fire hazard detector according to claim 1, characterized in that: A buzzer is also installed on the PCB circuit board (200), and the buzzer is electrically connected to the PCB circuit board (200); a sound cavity (640) is provided inside the bottom shell (100), and the buzzer is located inside the sound cavity (640); and the sound cavity (640) is connected to the outside of the bottom shell (100) through a connecting hole.

9. A dual-light source fire hazard detector according to claim 1, characterized in that: The PCB circuit board (200) is equipped with an LED indicator light, which is electrically connected to the PCB circuit board (200); the LED indicator light passes through the upper cover (300) and is arranged outward.

10. The dual-light source fire hazard detector according to claim 1, characterized in that: The PCB circuit board (200) is also equipped with a 4G antenna, which passes through one side of the bottom shell (100) and is arranged outward.

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