Flame detection sensor device

Abstract

The utility model discloses a flame detection sensor device which comprises a sensing assembly, and the sensing assembly comprises a shell, a sealing groove, an optical filter, a limiting ring, a condensing lens, an annular mounting plate, an infrared sensing element, a signal conditioning circuit and a microprocessor unit. According to the utility model, through the design of the optical filter and the signal conditioning circuit, the influence of environmental interference on the detection result is effectively reduced, the optimized sensor probe structure and the advanced signal processing algorithm can accurately detect the existence of flame, reduce false alarm and missing alarm conditions, and improve the reliability of the device in a complex environment; through configuration of various communication interfaces, data transmission requirements in different scenes are met, integration and linkage with other equipment are facilitated, stable operation of the sensor under various power supply conditions is ensured through the power supply management module and the battery backup module, the applicability and reliability of the device are improved, and the device is suitable for popularization and application. And disassembly and assembly can be achieved by pressing the insertion rod, and disassembly, assembly and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a flame detection sensor device. Background Art

[0002] In the field of fire protection, flame detection is a core component of the fire warning system. It can quickly capture the characteristic signals generated by the flame at the initial stage of the fire, such as light radiation with a specific wavelength, heat change, etc. By detecting the flame in time, the fire protection system can quickly activate the alarm device and notify relevant personnel to carry out fire fighting, thereby minimizing the casualties and property losses caused by the fire to the greatest extent. This plays a crucial role in protecting people's lives and safety and ensuring the safety of buildings and valuable materials. Especially in industrial safety, flame detection is of key significance. Many industrial production processes involve dangerous factors such as high temperature, high pressure, flammability, and explosiveness. Once a fire occurs, it will not only affect the normal progress of production but also may lead to serious production accidents and environmental pollution.

[0003] Existing flame detection devices have many problems. For example, existing flame detection devices have poor adaptability to different environments, the detection accuracy and sensitivity need to be improved, and the complex structure makes installation and maintenance inconvenient. Therefore, a flame detection sensor device is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flame detection sensor device to solve one of the problems raised in the above background art.

[0005] The utility model is implemented by the following technical solution: A flame detection sensor device includes an induction component. The induction component includes a housing, a sealing groove, an optical filter, a limiting ring, a condenser lens, an annular mounting plate, an infrared sensing element, a signal conditioning circuit, base screws, a main control board, and a microprocessor unit.

[0006] A sealing groove is formed at the top of the inner side wall of the housing. An optical filter is fixedly connected to the inner side wall of the sealing groove. A condenser lens is fixedly connected to the lower part of the inner side wall of the housing near the sealing groove through a limiting ring. An annular mounting plate is fixedly connected to the lower part of the inner side wall of the housing near the limiting ring. An infrared sensing element is fixedly connected to the inner side wall of the annular mounting plate. The output end of the infrared sensing element is electrically connected to a signal conditioning circuit. The upper surface of the base is fixedly connected to a main control board through a plurality of screws. A microprocessor unit is arranged at the center of the upper surface of the main control board. The output end of the signal conditioning circuit is electrically connected to the input end of the microprocessor unit.

[0007] As a further preference of this technical solution: an installation ring is fixedly connected to the bottom of the outer side wall of the housing, and the lower surface of the installation ring is fixedly connected to the outer side of the upper surface of the base through a plurality of screws.

[0008] As a further preference of this technical solution: an RS485 interface is provided at the front part of the upper surface of the main control board, an insertion interface is opened on the outer side of the inner side wall of the housing near the RS485 interface, and a Bluetooth interface and a Wi-Fi interface are respectively provided on both sides of the front part of the upper surface of the main control board near the RS485 interface.

[0009] As a further preference of this technical solution: signal indicators are provided at the centers of the front surfaces of the Bluetooth interface and the Wi-Fi interface, and the front surfaces of the two signal indicators penetrate through both sides of the inner side wall of the housing near the insertion interface.

[0010] As a further preference of this technical solution: a power management module is provided at the rear part of the upper surface of the main control board, a power interface is provided at the input end of the power management module, the rear surface of the power interface penetrates through the rear part of the inner side wall of the housing, and a backup power module is provided at the front part of the upper surface of the main control board near the power management module.

[0011] As a further preference of this technical solution: a sealing groove is opened on the upper surface of the base near the inner side of the installation ring, a sealing pad is fixedly connected to the bottom of the housing, and the outer side wall of the sealing pad is attached to the inner side wall of the sealing groove.

[0012] As a further preference of this technical solution: a connecting seat is fixedly connected to the center of the lower surface of the base, a fixing seat is slidably connected to the outer side wall of the connecting seat, an installation hole is provided inside the connecting seat, top blocks are slidably connected to both sides of the inner side wall of the installation hole, insertion rods are fixedly connected to the centers of the sides of the two top blocks away from each other, the far ends of the two insertion rods respectively penetrate through the centers of both sides of the inner side wall of the installation hole, springs are fixedly connected to the sides of the two top blocks close to each other, insertion holes are opened at the centers of both sides of the inner bottom wall of the fixing seat, and the outer side wall of the insertion rod away from the top block is slidably connected to the inner side wall of the insertion hole, and fixing holes are opened on both sides of the inner bottom wall of the fixing seat.

[0013] As a further preference of this technical solution: positioning blocks are fixedly connected to both the front and rear parts of the inner side wall of the fixing seat, positioning grooves are opened on both the front and rear parts of the outer side wall of the connecting seat, and the outer side walls of the positioning blocks are slidably connected to the inner side walls of the positioning grooves.

[0014] Advantages of the present utility model:

[0015] 1. The utility model effectively reduces the influence of environmental interference on the detection result through the design of an optical filter and a signal conditioning circuit. The optimized sensor probe structure and advanced signal processing algorithm can accurately detect the presence of a flame, reduce false alarms and missed alarms, and improve the reliability of the device in a complex environment.

[0016] 2. The utility model meets the data transmission requirements in different scenarios through the configuration of multiple communication interfaces, facilitating integration and linkage with other devices. Moreover, the power management module and battery backup module ensure the stable operation of the sensor under various power conditions, improving the applicability and reliability of the device. Additionally, it can be disassembled and assembled by pressing the insertion rod, which is convenient for disassembly, assembly, and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the base and fixed seat structure of the present utility model

[0020] Figure 3 It is a schematic diagram of the housing and condenser lens structure of the present utility model;

[0021] Figure 4 It is a schematic diagram of the annular mounting plate and infrared sensing element structure of the present utility model;

[0022] Figure 5 It is a schematic diagram of the main control board and microprocessor unit structure of the present utility model;

[0023] Figure 6 It is a schematic diagram of the connection seat and the sectional structure of the insertion rod of the present utility model.

[0024] In the figure: 1. Induction component; 11. Housing; 12. Sealing groove; 13. Optical filter; 14. Limit ring; 15. Condensing lens; 16. Annular mounting plate; 17. Infrared induction element; 18. Signal conditioning circuit; 19. Base; 20. Screw; 21. Main control board; 22. Microprocessor unit; 23. Mounting ring; 24. Screw; 25. RS485 interface; 26. Plug interface; 27. Bluetooth interface; 28. Wi-Fi interface; 29. Signal indicator light; 30. Power management module; 31. Power interface; 32. Backup power module; 33. Sealing groove; 34. Sealing gasket; 35. Connecting seat; 36. Fixed seat; 37. Mounting hole; 38. Top block; 39. Plug rod; 40. Jack; 41. Fixing hole; 42. Positioning block; 43. Positioning groove; 44. Spring. Detailed implementation manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment

[0027] Please refer to Figures 1-6, the present utility model provides a technical solution: a flame detection sensor device, including an induction component 1. The induction component 1 includes a housing 11, a sealing groove 12, an optical filter 13, a limiting ring 14, a condenser lens 15, an annular mounting plate 16, an infrared induction element 17, a signal conditioning circuit 18, a base 19, screws 20, a main control board 21, and a microprocessor unit 22; a sealing groove 12 is provided at the top of the inner side wall of the housing 11, an optical filter 13 is fixedly connected to the inner side wall of the sealing groove 12, a condenser lens 15 is fixedly connected to the lower part of the inner side wall of the housing 11 near the sealing groove 12 through a limiting ring 14, an annular mounting plate 16 is fixedly connected to the lower part of the inner side wall of the housing 11 near the limiting ring 14, an infrared induction element 17 is fixedly connected to the inner side wall of the annular mounting plate 16, the output end of the infrared induction element 17 is electrically connected to a signal conditioning circuit 18, the upper surface of the base 19 is fixedly connected to a main control board 21 through a plurality of screws 20, a microprocessor unit 22 is arranged at the center of the upper surface of the main control board 21, and the output end of the signal conditioning circuit 18 is electrically connected to the input end of the microprocessor unit 22. Through the design of the sealing groove 12, the installation stability and sealing performance of the optical filter 13 can be ensured, preventing impurities such as dust and water vapor from entering the interior and affecting the detection effect. The position of the condenser lens 15 is fixed by the limiting ring 14, thereby ensuring the installation accuracy and stability of the condenser lens 15 in the housing 11. Among them, the main function of the signal conditioning circuit 18 is to amplify, filter, and shape the weak electrical signal output by the infrared induction element 17; the amplification circuit amplifies the weak flame signal to an appropriate amplitude for subsequent processing; the filter circuit removes the noise and interference components in the signal to improve the signal quality; the shaping circuit shapes the processed signal into a standard digital signal for easy analysis and processing by the microprocessor unit 22.

[0028] In this embodiment, specifically: an installation ring 23 is fixedly connected to the bottom of the outer side wall of the housing 11, and the lower surface of the installation ring 23 is fixedly connected to the outer side of the upper surface of the base 19 through a plurality of screws 24. By fixing the base 19 and the installation ring 23 with a plurality of screws 24, the firmness of the connection between the housing 11 and the base 19 is ensured.

[0029] In this embodiment, specifically: an RS485 interface 25 is arranged at the front part of the upper surface of the main control board 21, an insertion interface 26 is provided at the outer side of the inner side wall of the housing 11 near the RS485 interface 25, and a Bluetooth interface 27 and a Wi-Fi interface 28 are respectively arranged on both sides of the front part of the upper surface of the main control board 21 near the RS485 interface 25. Among them, the RS485 interface is suitable for long-distance and multi-node industrial communication scenarios, and can transmit the flame information detected by the sensor to the monitoring center or other control devices to realize remote transmission and centralized management of data; the two wireless communication interfaces of the Bluetooth interface 27 and the Wi-Fi interface 28 are convenient for connecting with mobile devices to realize real-time monitoring and remote control.

[0030] In this embodiment, specifically: signal indicator lights 29 are provided at the centers of the front surfaces of the Bluetooth interface 27 and the Wi-Fi interface 28. The front surfaces of the two signal indicator lights 29 penetrate through both sides of the inner side wall of the housing 11 near the jack 26. Among them, the signal indicator light 29 is used to display the working state of the communication interface. When the interface is working properly, the signal indicator light 29 lights up, facilitating the user to intuitively understand the operation of the device.

[0031] In this embodiment, specifically: a power management module 30 is provided at the rear part of the upper surface of the main control board 21. A power interface 31 is provided at the input end of the power management module 30. The rear surface of the power interface 31 penetrates through the inner side wall of the housing 11 at the rear part. A backup power module 32 is provided at the front part of the upper surface of the main control board 21 near the power management module 30. During the normal operation of the sensor device, the power management module 30 receives external power through the power interface 31 and converts it into appropriate voltage and current to provide stable power supply for each component inside the sensor. When the external power is abnormal or cut off, the backup power module 32 automatically starts to provide temporary power for the sensor, ensuring that the sensor can continue to work for a period of time and guaranteeing the continuity and reliability of flame detection.

[0032] In this embodiment, specifically: a sealing groove 33 is provided on the upper surface of the base 19 near the inside of the mounting ring 23. A sealing gasket 34 is fixedly connected to the bottom of the housing 11. The outer side wall of the sealing gasket 34 is fitted and connected to the inner side wall of the sealing groove 33. By sealing the connection between the base 19 and the housing 11 with the sealing gasket 34, it effectively prevents external impurities such as dust and water vapor from entering the inside of the housing 11, ensuring the working environment of the internal circuit and components, improving the stability and reliability of the device, and is especially suitable for some harsh working environments.

[0033] In this embodiment, specifically: a connecting seat 35 is fixedly connected to the center of the lower surface of the base 19. A fixing seat 36 is slidably connected to the outer side wall of the connecting seat 35. An installation hole 37 is provided inside the connecting seat 35. Two top blocks 38 are slidably connected to both sides of the inner side wall of the installation hole 37. A plug rod 39 is fixedly connected to the center of the side of each of the two top blocks 38 away from each other. The two ends of the two plug rods 39 away from each other respectively penetrate through the centers of both sides of the inner side wall of the installation hole 37. A spring 44 is fixedly connected to the side of the two top blocks 38 close to each other. Insertion holes 40 are provided at the centers of both sides of the inner side wall of the fixing seat 36. The outer side wall of the plug rod 39 away from the top block 38 is slidably connected to the inner side wall of the insertion hole 40. Fixing holes 41 are provided on both sides of the inner bottom wall of the fixing seat 36. By the thrust of the spring 44, the two top blocks 38 are pushed away from each other, so that the two plug rods 39 are respectively inserted into the two insertion holes 40 on the fixing seat 36, thereby limiting and fixing the connecting seat 35 and completing the installation of the sensor device. The fixing holes 41 on the fixing seat 36 facilitate the fixing and installation of the fixing seat 36 by using expansion screws or the like.

[0034] In this embodiment, specifically: positioning blocks 42 are fixedly connected to both the front and rear of the inner side wall of the fixing seat 36. Positioning grooves 43 are provided on both the front and rear of the outer side wall of the connecting seat 35. The outer side wall of the positioning block 42 is slidably connected to the inner side wall of the positioning groove 43. By sliding the positioning groove 43 on the fixing seat 36 along the positioning block 42, the installation position of the fixing seat 36 can be limited, and thus the plug rod 39 can be aligned with the insertion hole 40.

[0035] Working principle or structural principle: When in use, when a flame appears in the surrounding environment, the flame emits infrared light with a specific wavelength. These infrared rays first pass through the optical filter 13 and are projected onto the condenser lens 15. Then, through the focusing effect of the condenser lens 15, they are concentrated on the infrared sensing element 17. After receiving the infrared radiation of the flame, the infrared sensing element 17 converts it into a weak electrical signal and outputs it to the signal conditioning circuit 18 for signal amplification, filtering, and shaping to form a standard digital signal. The digital signal processed by the signal conditioning circuit 18 is transmitted to the microprocessor unit 22. The microprocessor unit 22 runs a pre-written flame recognition algorithm to analyze and judge the input signal. The algorithm identifies and compares the characteristics of the flame signal, such as frequency, amplitude, and change trend, to determine whether there is a flame. If the judgment result is that there is a flame, the microprocessor unit 22 will transmit the flame detection information to external devices, such as a monitoring center, mobile phone, etc., through the RS485 interface 25, Bluetooth interface 27, or Wi-Fi interface 28. Users can obtain the results of flame detection in real time through these devices and take corresponding measures. At the same time, the microprocessor unit 22 triggers an external alarm device to emit an audible and visual alarm signal to remind the on-site personnel to take measures in time. By pressing the far ends of the two insertion rods 39 away from each other, the two insertion rods 39 are brought closer, thereby facilitating the disassembly and assembly of the connection seat 35, and further facilitating the disassembly and maintenance of the sensor device.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flame detection sensor device, characterized in that, It includes an induction component (1), and the induction component (1) includes a housing (11), a sealing groove (12), an optical filter (13), a limiting ring (14), a condenser lens (15), an annular mounting plate (16), an infrared induction element (17), a signal conditioning circuit (18), a base (19), screws (20), a main control board (21), and a microprocessor unit (22); At the top of the inner side wall of the housing (11), a sealing groove (12) is provided. The inner side wall of the sealing groove (12) is fixedly connected with an optical filter (13). The lower part of the inner side wall of the housing (11) near the sealing groove (12) is fixedly connected with a condenser lens (15) through a limiting ring (14). The lower part of the inner side wall of the housing (11) near the limiting ring (14) is fixedly connected with an annular mounting plate (16). The inner side wall of the annular mounting plate (16) is fixedly connected with an infrared induction element (17). The output end of the infrared induction element (17) is electrically connected to a signal conditioning circuit (18). The upper surface of the base (19) is fixedly connected with a main control board (21) through a plurality of screws (20). At the center of the upper surface of the main control board (21), a microprocessor unit (22) is provided. The output end of the signal conditioning circuit (18) is electrically connected to the input end of the microprocessor unit (22).

2. The flame detection sensor device according to claim 1, wherein At the bottom of the outer side wall of the housing (11), an installation ring (23) is fixedly connected. The lower surface of the installation ring (23) is fixedly connected to the outer side of the upper surface of the base (19) through a plurality of screws (24).

3. A flame detection sensor device according to claim 1, characterized in that, At the front part of the upper surface of the main control board (21), an RS485 interface (25) is provided. At the outer side of the inner side wall of the housing (11) near the RS485 interface (25), an insertion interface (26) is provided. At the two sides of the front part of the upper surface of the main control board (21) near the RS485 interface (25), a Bluetooth interface (27) and a Wi-Fi interface (28) are respectively provided.

4. The flame detection sensor device according to claim 3, characterized in that At the center of the front surface of the Bluetooth interface (27) and the Wi-Fi interface (28), signal indicators (29) are provided. The front surfaces of the two signal indicators (29) penetrate through the two sides of the inner side wall of the housing (11) near the insertion interface (26).

5. The flame detection sensor device according to claim 3, characterized in that, At the rear part of the upper surface of the main control board (21), a power management module (30) is provided. At the input end of the power management module (30), a power interface (31) is provided. The rear surface of the power interface (31) penetrates through the rear part of the inner side wall of the housing (11). At the front part of the upper surface of the main control board (21) near the power management module (30), a backup power module (32) is provided.

6. The flame detection sensor device according to claim 5, characterized in that, At the inner side of the upper surface of the base (19) near the installation ring (23), a sealing groove (33) is provided. The bottom of the housing (11) is fixedly connected with a sealing gasket (34). The outer side wall of the sealing gasket (34) is adhesively connected to the inner side wall of the sealing groove (33).

7. A flame detection sensor device according to claim 2, characterized in that, A connecting seat (35) is fixedly connected to the center of the lower surface of the base (19). A fixing seat (36) is slidably connected to the outer side wall of the connecting seat (35). An installation hole (37) is arranged inside the connecting seat (35). Two ejector blocks (38) are slidably connected to both sides of the inner side wall of the installation hole (37). A plug rod (39) is fixedly connected to the center of the side of each of the two ejector blocks (38) away from each other. The far ends of the two plug rods (39) respectively penetrate through the centers of both sides of the inner side wall of the installation hole (37). A spring (44) is fixedly connected to the side of the two ejector blocks (38) close to each other. Jacks (40) are respectively opened at the centers of both sides of the inner side wall of the fixing seat (36). The outer side wall of the plug rod (39) away from the ejector block (38) is slidably connected to the inner side wall of the jack (40). Fixing holes (41) are respectively opened at both sides of the inner bottom wall of the fixing seat (36).

8. The flame detection sensor device according to claim 7, characterized in that, Positioning blocks (42) are fixedly connected to both the front part and the rear part of the inner side wall of the fixing seat (36). Positioning grooves (43) are respectively opened at both the front part and the rear part of the outer side wall of the connecting seat (35). The outer side wall of the positioning block (42) is slidably connected to the inner side wall of the positioning groove (43).

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