A fire detection device based on fiber optic sensing

Abstract

This utility model relates to the field of fire detection technology and provides a fire detection device based on fiber optic sensing. The device includes a mounting frame on which an optical fiber body is mounted; an optical fiber inserted into the optical fiber body, to which an optical fiber sensor is connected, and the optical fiber sensor is connected to a battery pack; and a cooling fan mounted on the mounting frame, located on one side of the optical fiber body, for cooling the optical fiber body. This fiber optic sensing-based fire detection device integrates multiple monitoring functions through fiber optic sensing technology, avoiding the use of multiple different sensor devices in the same battery pack, reducing costs. It also solves the problem of complex and time-consuming installation and debugging caused by different sensors' environmental adaptability and monitoring sensitivity values, making it simpler to use and better meeting practical application needs.

Description

Technical Field

[0001] This utility model belongs to the field of fire detection technology, and in particular relates to a fire detection device based on fiber optic sensing. Background Technology

[0002] In the process of using some battery packs, in order to ensure the safety of battery pack use, it is often necessary to monitor the battery pack temperature, carbon monoxide concentration, and whether there is smoke. Therefore, multiple sensor devices are required in the same battery pack, resulting in high cost. At the same time, different sensors have different environmental temperature adaptability and monitoring sensitivity values, making installation and debugging complicated and time-consuming. In addition, power supply and wiring need to solve electrical spacing problems, making the overall use quite troublesome. Utility Model Content

[0003] This invention provides a fire detection device based on fiber optic sensing, aiming to solve the problems mentioned in the background art, such as the high cost and inconvenience of using multiple sensor devices in some existing battery boxes.

[0004] To solve the above problems, this utility model is implemented as follows: a fire detection device based on fiber optic sensing, comprising: a mounting frame on which an optical fiber body is disposed; an optical fiber inserted into the optical fiber body, wherein an optical fiber sensor is connected to the optical fiber and the optical fiber sensor is connected to a battery pack; and a cooling fan mounted on the mounting frame, wherein the cooling fan is located on one side of the optical fiber body and is used to dissipate heat from the optical fiber body.

[0005] Preferably, the mounting frame is provided with a cooling mechanism for cooling the optical fiber body. The cooling mechanism includes: a placement box fixedly installed at the bottom of the mounting frame for placing cooling water, wherein a semiconductor cooling chip is provided inside the placement box for cooling the cooling water in the placement box; a circulation pump fixedly installed on one side of the placement box, wherein the inlet end of the circulation pump is connected to the placement box; and a circulation pipe fixedly installed on the inner wall of the mounting frame, wherein one end of the circulation pipe is connected to the outlet end of the circulation pump, and the other end of the circulation pipe is connected to the placement box.

[0006] Preferably, the mounting frame has two ventilation openings, and a placement rack is fixedly installed on one side of each of the two ventilation openings. Each of the two placement racks is equipped with a dustproof net, which is used to filter dust and impurities in the air. The placement rack and the dustproof net are equipped with a disassembly mechanism, which is used to disassemble the dustproof net.

[0007] Preferably, the disassembly mechanism includes: a placement shell fixedly installed on the outer wall of the placement rack; a connecting rod slidably installed on the placement shell, a stop block fixedly sleeved on the connecting rod, and a spring sleeved on the connecting rod; and a positioning block fixedly installed on the connecting rod, the positioning block being adapted to and connected to the positioning groove on the dustproof net.

[0008] Preferably, both the connecting rod and the stop are circular, and the stop is used to compress the spring.

[0009] Preferably, an abutment block is fixedly installed on the inner wall of the placement rack. The abutment block is used to abut and limit the dustproof net. A connecting block is fixedly installed on the dustproof net. The connecting block and the connecting groove on the abutment block are adapted to connect.

[0010] Preferably, a cooling fan is fixedly installed on the rear outer wall of the placement box, and the cooling fan is used to dissipate heat from the semiconductor cooling chip.

[0011] Preferably, a one-way valve is provided on the end where the circulation pipe connects to the placement box.

[0012] Preferably, a plurality of positioning clips are fixedly installed inside the mounting frame, and the positioning clips are used to clamp and position the optical fiber.

[0013] Preferably, a positioning frame is fixedly installed on the bottom inner wall of the mounting frame, and the positioning frame is used to position and place the optical fiber body.

[0014] Compared with related technologies, the fire detection device based on fiber optic sensing provided by this utility model has the following advantages:

[0015] Compared with existing technologies, the fire detection device based on fiber optic sensing provided in this solution can integrate multiple monitoring functions through fiber optic sensing technology, avoiding the use of multiple different sensor devices in the same battery pack, reducing costs, and solving the problem of complex and time-consuming installation and debugging caused by different sensor environmental adaptation temperatures and monitoring sensitivity values. It is simpler to use and better meets actual application needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a fire detection device based on fiber optic sensing provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0018] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0019] Figure 4 for Figure 2 An enlarged structural diagram of part B shown in the figure;

[0020] Figure 5 This is an enlarged structural schematic diagram of the positioning frame in this utility model;

[0021] Figure 6 This is a schematic diagram showing the connection of the fiber optic host, fiber optic cable, and fiber optic sensor in this utility model;

[0022] Figure 7 This is a schematic diagram of the fiber optic sensor in this utility model.

[0023] Reference numerals: 1. Mounting bracket; 2. Fiber optic body; 3. Fiber optic cable; 4. Fiber optic sensor; 5. Cooling fan; 6. Placement box; 7. Semiconductor cooling chip; 8. Circulation pump; 9. Circulation pipe; 10. Placement rack; 11. Dustproof net; 12. Placement shell; 13. Connecting rod; 14. Spring; 15. Stop block; 16. Positioning block; 17. Abutment block; 18. Connecting block; 19. Positioning clamp; 20. Positioning frame. Detailed Implementation

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] This utility model provides a fire detection device based on fiber optic sensing, such as... Figure 1-7As shown, the fire detection device based on fiber optic sensing includes: a mounting frame 1, on which an optical fiber body 2 is mounted; an optical fiber 3 inserted into the optical fiber body 2, on which an optical fiber sensor 4 is connected, and the optical fiber sensor 4 is connected to a battery pack; and a cooling fan 5 mounted on the mounting frame 1, the cooling fan 5 being located on one side of the optical fiber body 2, the cooling fan 5 being used to dissipate heat from the optical fiber body 2.

[0027] In this embodiment, the fiber optic host 2 has CAN and 485 interfaces or a fiber optic interface for external communication. The fiber optic cable 3 used for the detection part on the fiber optic host 2 is integrated on one side of the host A, with multiple interfaces available. It provides a light source and a receiver for the fiber optic sensors 4. The fiber optic cable 3 is the channel for optical transmission and can use multimode or single-mode fiber, which has high transmission efficiency and anti-interference capability. In the overall use, the mounting bracket 1 and the support bracket for mounting the battery pack are fixedly connected. Multiple fiber optic sensors 4 are connected to their respective battery packs, and the corresponding fiber optic cables 3 are plugged into the fiber optic host 2. In use, the fiber optic host 2 sends light signals through the light source to the battery pack via the fiber optic cable 3. The light signals are detected by the fiber optic sensors. The device generates different light signals based on the temperature, smoke, water vapor, or carbon monoxide inside the battery pack. These signals are transmitted back to the fiber optic main body 2 via another channel of the same fiber optic cable 3, forming a closed loop. The fiber optic main body 2 analyzes the returned light signals and issues corresponding alarms or actions. It also records relevant data as needed. Through the entire device, multiple monitoring functions can be integrated using fiber optic sensing technology. This avoids the use of multiple different sensor devices in the same battery pack, reducing costs. It also solves the problem of complex and time-consuming installation and debugging caused by different sensors having different environmental adaptation temperatures and monitoring sensitivity values. It is easier to use and better meets actual usage needs. Furthermore, the fiber optic main body 2 can be cooled by the cooling fan 5 during use.

[0028] In a further preferred embodiment of this utility model, a cooling mechanism is provided on the mounting frame 1. The cooling mechanism is used to cool and dissipate heat from the optical fiber body 2. The cooling mechanism includes: a placement box 6 fixedly installed at the bottom of the mounting frame 1 for placing cooling water, a semiconductor cooling chip 7 disposed inside the placement box 6 for cooling the cooling water inside the placement box 6; a circulation pump 8 fixedly installed on one side of the placement box 6, the inlet end of the circulation pump 8 being connected to the placement box 6; and a circulation pipe 9 fixedly installed on the inner wall of the mounting frame 1, one end of the circulation pipe 9 being connected to the outlet end of the circulation pump 8, and the other end of the circulation pipe 9 being connected to the placement box 6.

[0029] In this embodiment, a PT100 temperature sensor is installed inside the mounting bracket 1. When the temperature sensor detects that the temperature inside the mounting bracket 1 is too high, but the cooling fan 5 cannot meet the heat dissipation requirements of the optical fiber body 2, the semiconductor cooling chip 7 is activated to cool the water in the placement box 6. At the same time, the circulation pump 8 is activated to extract the cooled water and deliver it to the circulation pipe 9. The cooled water absorbs the heat generated by the optical fiber body 2 during the flow in the circulation pipe 9, and then flows back to the placement box 6 to be cooled again. This cycle is repeated, which can effectively reduce the temperature of the optical fiber body 2, avoid affecting its monitoring performance and lifespan due to excessive temperature, and further improve the overall stability and reliability during the battery pack monitoring process.

[0030] In a further preferred embodiment of this utility model, the mounting frame 1 has two ventilation openings, and a placement frame 10 is fixedly installed on one side of each of the two ventilation openings. Each of the two placement frames 10 is provided with a dustproof net 11, which is used to filter dust and impurities in the air. The placement frame 10 and the dustproof net 11 are provided with a disassembly mechanism, which is used to disassemble the dustproof net 11.

[0031] In this embodiment, one vent facilitates the cooling fan 5 to draw external air into the mounting bracket 1, and the other vent facilitates the exhaust of air from the mounting bracket 1. During the operation of the device, external air enters the device through the vent, and the dustproof net 11 can effectively intercept dust, particles and other impurities in the air, preventing them from entering the device and adhering to key components such as the optical fiber body 2.

[0032] In a further preferred embodiment of the present invention, the disassembly mechanism includes: a placement shell 12 fixedly installed on the outer wall of the placement rack 10; a connecting rod 13 slidably installed on the placement shell 12, a stop block 15 fixedly sleeved on the connecting rod 13, and a spring 14 sleeved on the connecting rod 13; and a positioning block 16 fixedly installed on the connecting rod 13, the positioning block 16 being adapted to and connected to the positioning groove on the dustproof net 11.

[0033] In this embodiment, when it is necessary to disassemble the dustproof net 11 in actual use, simply pull the connecting rod 13. The connecting rod 13 slides on the placement shell 12, causing the stop block 15 to compress the spring 14. At the same time, the positioning block 16 disengages from the positioning groove on the dustproof net 11. At this time, the dustproof net 11 loses its positioning constraint. Then, the operator rotates the connecting rod 13 to adjust the positioning block 16 to one side of the placement rack 10 to avoid obstructing the disassembly of the dustproof net 11. At this time, the dustproof net 11 can be easily removed from the placement rack 10 for cleaning or replacement.

[0034] In a further preferred embodiment of the present invention, both the connecting rod 13 and the stop block 15 are circular, and the stop block 15 is used to compress the spring 14.

[0035] In this embodiment, since both the connecting rod 13 and the stop block 15 are circular, it is convenient to slide and rotate the connecting rod 13 and the stop block 15 within the placement frame 10, thereby facilitating the adjustment of the position of the positioning block 16.

[0036] In a further preferred embodiment of the present invention, an abutment block 17 is fixedly installed on the inner wall of the placement rack 10. The abutment block 17 is used to abut and limit the dustproof net 11. A connecting block 18 is fixedly installed on the dustproof net 11. The connecting block 18 and the connecting groove on the abutment block 17 are adapted to be connected.

[0037] In this embodiment, when installing the dustproof net 11, the connecting block 18 is accurately inserted into the connecting groove on the abutment block 17. The two fit together tightly, which not only positions the dustproof net 11 in the horizontal direction, but also prevents the dustproof net 11 from shaking in the vertical direction to a certain extent, making it convenient for workers to install the dustproof net 11.

[0038] In a further preferred embodiment of the present invention, a cooling fan is fixedly installed on the rear outer wall of the placement box 6, and the cooling fan is used to dissipate heat from the semiconductor cooling chip 7.

[0039] In this embodiment, when the thermoelectric cooler 7 is running, it can accelerate the flow of air around the rear of the placement box 6, forming effective air convection, which can quickly remove the heat generated by the thermoelectric cooler 7, keeping the thermoelectric cooler 7 within a suitable operating temperature range, thereby ensuring that the thermoelectric cooler 7 can continuously and stably cool the cooling water in the placement box 6.

[0040] In a further preferred embodiment of this utility model, a one-way valve is provided on the end where the circulation pipe 9 and the placement box 6 are connected.

[0041] In this embodiment, the one-way valve only allows the cooling water to flow in one direction, that is, to flow back from the circulation pipe 9 to the placement box 6, preventing the cooling water from flowing in the opposite direction.

[0042] In a further preferred embodiment of the present invention, a plurality of positioning clips 19 are fixedly installed inside the mounting frame 1, and the positioning clips 19 are used to clamp and position the optical fiber 3.

[0043] In this embodiment, the positioning clip 19 made of elastic plastic material can tightly and securely clamp the optical fiber 3, preventing the optical fiber 3 from shifting or loosening due to vibration, shaking or other factors during the operation of the device.

[0044] In a further preferred embodiment of the present invention, a positioning frame 20 is fixedly installed on the bottom inner wall of the mounting frame 1, and the positioning frame 20 is used to position and place the optical fiber body 2.

[0045] In this embodiment, the positioning frame 20 and the optical fiber body 2 cooperate with each other. The positioning frame 20 can provide a fixed and precise installation position for the optical fiber body 2, which facilitates the placement and installation of the optical fiber body 2.

[0046] In summary, compared with related technologies, this device can integrate multiple monitoring functions through fiber optic sensing technology, avoiding the use of multiple different sensor devices in the same battery pack, reducing costs, and solving the problem of complex and time-consuming installation and debugging caused by different sensor environmental adaptation temperatures and monitoring sensitivity values. It is simpler to use and better meets actual application needs.

[0047] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A fiber optic sensor based fire detection apparatus, characterized by, include: Mounting frame, on which the optical fiber body is mounted; An optical fiber is inserted into the optical fiber body, and an optical fiber sensor is connected to the optical fiber. The optical fiber sensor is connected to the battery pack. A cooling fan is mounted on the mounting bracket. The cooling fan is located on one side of the optical fiber body and is used to dissipate heat from the optical fiber body.

2. The fiber optic sensor based fire detection apparatus of claim 1, wherein, The mounting bracket is equipped with a cooling mechanism for cooling the optical fiber body. The cooling mechanism includes: A placement box, fixedly installed at the bottom of the mounting frame, is used to hold cooling water. A semiconductor cooling chip is installed inside the placement box to cool the cooling water inside the placement box. A circulation pump is fixedly installed on one side of the placement box, and the water inlet of the circulation pump is connected to the placement box; A circulation pipe is fixedly installed on the inner wall of the mounting frame. One end of the circulation pipe is connected to the outlet of the circulation pump, and the other end of the circulation pipe is connected to the placement box.

3. The fiber optic sensor based fire detection apparatus of claim 1, wherein, The mounting frame has two ventilation openings, and a placement rack is fixedly installed on one side of each of the two ventilation openings. Each of the two placement racks is equipped with a dustproof net, which is used to filter dust and impurities in the air. The placement rack and the dustproof net are equipped with a disassembly mechanism, which is used to disassemble the dustproof net.

4. The fiber optic sensor based fire detection apparatus of claim 3, wherein, The disassembly mechanism includes: A placement shell fixedly installed on the outer wall of the placement rack; A connecting rod is slidably mounted on the housing, a stop block is fixedly sleeved on the connecting rod, and a spring is sleeved on the connecting rod; A positioning block is fixedly installed on the connecting rod, and the positioning block is adapted to the positioning groove on the dustproof net.

5. The fiber optic sensor based fire detection apparatus of claim 4, wherein, Both the connecting rod and the stop are circular, and the stop is used to compress the spring.

6. The fiber optic sensor based fire detection apparatus of claim 3, wherein, An abutment block is fixedly installed on the inner wall of the placement rack. The abutment block is used to abut and limit the dustproof net. A connecting block is fixedly installed on the dustproof net. The connecting block and the connecting groove on the abutment block are adapted to connect.

7. The fiber optic sensor based fire detection apparatus of claim 2, wherein, A cooling fan is fixedly installed on the rear outer wall of the placement box, and the cooling fan is used to dissipate heat from the semiconductor cooling chip.

8. The fire detection device based on fiber optic sensing as described in claim 2, characterized in that, A one-way valve is provided at the end where the circulation pipe connects to the placement box.

9. The fiber optic sensor-based fire detection apparatus of claim 1, wherein, Multiple positioning clips are fixedly installed inside the mounting frame, and the positioning clips are used to clamp and position the optical fiber.

10. The fiber optic sensor-based fire detection apparatus of claim 1, wherein, A positioning frame is fixedly installed on the bottom inner wall of the mounting bracket, and the positioning frame is used to position and place the optical fiber body.

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