Multifunctional fire fighting helmet

Abstract

A multifunctional fire fighting helmet disclosed by the present invention comprises a helmet body, a base assembly, an image acquisition unit, an alarm unit, an audio communication unit and a processing unit, the base assembly is detachably connected to the outside of the helmet body and is arranged along the circumferential direction of the helmet body, and the image acquisition unit is detachably connected to one side of the base assembly. The alarm unit is detachably connected to the other side of the base assembly, the audio communication unit is arranged in the helmet body, and the processing unit is in signal connection with the image acquisition unit, the alarm unit and the audio communication unit. According to the invention, an image acquisition function, a sound-light alarm function and an audio communication function are integrated, and high integration of multiple functions of the fire-fighting helmet is realized, so that multiple devices do not need to be additionally carried, and the maneuverability and flexibility of firefighters are improved.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment technology, specifically to a multifunctional fire helmet. Background Technology

[0002] In scenarios such as ship and maritime rescue, firefighters need to enter complex environments such as high temperature, dense smoke and humidity to perform their tasks, and the equipment they carry must meet the functions of protection, environmental reconnaissance and communication.

[0003] However, in current rescue operations, firefighters typically wear traditional helmets, which only offer basic protection against explosions and impacts. To enable environmental reconnaissance and communication, additional equipment such as cameras and walkie-talkies are required, increasing the total weight of the equipment carried by firefighters to over 3 kg. This increases their workload, restricts their movement, and makes it difficult to meet the demands of efficient firefighting operations. Firefighters' mobility decreases by more than 40%, and the extra equipment can also obstruct their vision, resulting in a poor human-machine interface experience. Therefore, providing a multi-functional fire helmet with highly integrated functions and optimized human-machine interaction is essential. Summary of the Invention

[0004] The purpose of this invention is to propose a multifunctional fire helmet to solve the technical problems of existing fire helmets having limited functions, requiring additional equipment to be carried, resulting in increased load, poor human-machine experience, and consequently low mobility efficiency for firefighters.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A multi-functional fire helmet, comprising: Helmet body; The base assembly is detachably connected to the outside of the helmet body and is arranged circumferentially along the helmet body; An image acquisition unit is detachably connected to one side of the base assembly and is used to acquire visible light images and infrared thermal images of the scene. An alarm unit, detachably connected to the other side of the base assembly, is used to emit an audible and visual alarm; An audio communication unit, located inside the helmet body, is used to enable voice interaction; The processing unit is connected to the image acquisition unit, the alarm unit, and the audio communication unit to process data and issue control commands.

[0006] In some embodiments, a display unit is further included, which includes a mask display module and a wristwatch display module. The mask display module and the wristwatch display module are respectively signal-connected to the processing unit and are used to display real-time images captured by different image acquisition units.

[0007] In some embodiments, the base assembly includes a first fixing seat, a second fixing seat, and a connector. The first fixing seat and the second fixing seat are respectively disposed on the side of the helmet body located at the ear and are snapped or screwed to the helmet body. The first fixing seat is used to install the image acquisition unit, and the second fixing seat is used to install the alarm unit. The two ends of the connector are respectively connected to the first fixing seat and the second fixing seat. The connector has a wire channel inside, and wires are disposed in the wire channel to realize power supply and data transmission.

[0008] In some embodiments, the first fixing base includes a snap-fit ​​block, a connecting block, and a torque shaft. The helmet body has a snap-fit ​​groove adapted to the snap-fit ​​block. The snap-fit ​​block snaps into the snap-fit ​​groove. The connecting block is screwed onto the side of the snap-fit ​​block away from the helmet body. The connecting block has a placement groove. The torque shaft is screwed into the placement groove. The image acquisition unit is fixed on the torque shaft.

[0009] In some embodiments, the second fixing base includes a fixing block and a mounting block. The fixing block is screwed onto the helmet body, and the mounting block is fixed onto the fixing block. A mounting groove is formed in the middle of the mounting block, and the alarm unit is screwed into the mounting groove.

[0010] In some embodiments, the image acquisition unit includes a first housing, an infrared camera, and a visible light camera. The first housing is fixed on the torsion shaft, and the infrared camera and the visible light camera are arranged sequentially from top to bottom on the side of the first housing facing the scene. The infrared camera and the visible light camera are respectively signal connected to the processing unit.

[0011] In some embodiments, the alarm unit includes a second housing, a tri-color light, and a buzzer. The second housing is fixed in the mounting groove, and the tri-color light and buzzer are respectively fixed on the side of the second housing facing the scene. The tri-color light and buzzer are respectively signal connected to the processing unit.

[0012] In some embodiments, the audio communication unit includes a bone conduction microphone and a flat speaker. The bone conduction microphone is fixed inside the helmet and 70-90 mm away from the ear. The flat speaker is attached to the inner side of the helmet and located at the ear position. The bone conduction microphone and the flat speaker are respectively connected to the processing unit for signal transmission.

[0013] In some embodiments, the mask display module includes a mask body, a frame, an optical engine display screen, a battery, and a motherboard. The frame is snapped onto the side of the mask body near the face. The battery and the motherboard are respectively fixed to both ends of the frame. The optical engine display screen is disposed in the middle of the frame. The optical engine display screen is electrically connected to the battery and the motherboard respectively. The motherboard is signal connected to the processing unit.

[0014] In some embodiments, the wristwatch display module includes an outer frame, a heat insulation layer, an air layer, a display layer, a fixing layer, and straps. One end of each strap is fixed to one side of the outer frame, and the other ends of the straps are connected by Velcro. The fixing layer is mounted on the outer frame. The display layer, air layer, and heat insulation layer are sequentially disposed on the fixing layer from the inside out. A control board is disposed on the fixing layer. The control board is electrically connected to the display layer and signal-connected to the processing unit.

[0015] Compared with the prior art, the beneficial effects of the present invention mainly include: This invention provides a multifunctional fire helmet that integrates image acquisition, sound and light alarm, and audio communication functions on the basis of original protective functions. It achieves a high degree of integration of multiple functions in the fire helmet, thereby eliminating the need to carry multiple additional devices and greatly reducing the weight of equipment carried by firefighters when entering the rescue scene. This improves the mobility and flexibility of firefighters, increasing their mobility efficiency by more than 40%. Furthermore, since no additional equipment is needed, the firefighters' field of vision remains unobstructed, and the highly integrated devices enhance the human-computer interaction experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall wearing of the fire helmet described in this invention; Figure 2 This is a side view of the fire helmet described in this invention; Figure 3 This is another side view of the fire helmet described in this invention; Figure 4 This is an exploded view of the first fixing base of the present invention; Figure 5 This is an exploded view of the second fixing base of the present invention; Figure 6 This is a schematic diagram of the structure of the image acquisition unit described in this invention; Figure 7 This is a schematic diagram of the structure of the mask display module described in this invention; Figure 8 This is a schematic diagram of the mask display module of the present invention without the mask body; Figure 9 This is a side view of the wristwatch display module described in this invention; Figure 10 This is a schematic diagram of the structure of the processing unit described in this invention.

[0017] Explanation of reference numerals in the attached figures: 100. Helmet body; 200, base assembly; 210, first fixing seat; 211, snap-fit ​​block; 212, connecting block; 213, torque shaft; 214, placement slot; 220, second fixing seat; 221, fixing block; 222, mounting block; 223, mounting slot; 230, connector. 300, Image acquisition unit; 310, First housing; 320, Infrared camera; 330, Visible camera; 400, Alarm Unit; 500, Display unit; 510, Mask display module; 511, Mask body; 512, Frame; 513, Opto-mechanical display screen; 514, Battery; 515, Main board; 520, Wristwatch display module; 521, Outer frame; 522, Heat insulation layer; 523, Air layer; 524, Display layer; 525, Fixing layer; 600. Processing Unit. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] like Figures 1-3 As shown, this invention provides a multifunctional fire helmet, including a helmet body 100, a base assembly 200, an image acquisition unit 300, an alarm unit 400, a display unit 500, a processing unit 600, and an audio communication unit. The helmet body 100 provides protection for firefighters. The base assembly 200 is detachably connected to the outside of the helmet body 100 and arranged circumferentially around the helmet body 100. The image acquisition unit 300 is detachably connected to one side of the base assembly 200 for acquiring visible light and infrared thermal images of the scene. The alarm unit 400 is detachably connected to the other side of the base assembly 200 for issuing audible and visual alarms. The audio communication unit (not shown) is located inside the helmet body 100 for voice interaction. The display unit 500 displays real-time images of different helmet bodies 100. The processing unit 600 is connected to the image acquisition unit 300, the alarm unit 400, the display unit 500, and the audio communication unit to process data and issue control commands.

[0020] This invention provides a multifunctional fire helmet that integrates an image acquisition unit 300, an alarm unit 400, and an audio communication unit into the base assembly 200 on the basis of the original helmet body 100. This allows the fire helmet to not only provide the original protective functions but also image acquisition, audible and visual alarms, display functions, and audio communication functions. This achieves a high degree of integration of multiple functions in the fire helmet, eliminating the need to carry multiple additional devices and significantly reducing the weight of equipment carried by firefighters when entering rescue scenes. This improves the firefighters' mobility and flexibility. Practical experience shows that the total weight of the fire helmet of this invention is only 800g, which is 60% lighter than traditional external equipment carrying methods, and its mobility efficiency can be increased by more than 40%. Furthermore, since no additional equipment needs to be carried, the firefighters' field of vision remains unobstructed, and the highly integrated equipment enhances the human-computer interaction experience.

[0021] In addition, the fire helmet provided by this invention uses PPS high-temperature resistant shell and silicone rubber sealing ring for each unit, and the protection level can reach IP67. It is especially suitable for rescue scenarios in ships with humid heat, salt spray and high temperature. The failure rate of its electronic components can be reduced to less than 0.5%.

[0022] The structure of each unit of the multifunctional fire helmet provided by the present invention will be described in detail below.

[0023] In one embodiment, the base assembly 200 is made of 7075-T6 aluminum alloy and is snap-fitted to or detachably connected to the helmet body 100 via bolts. The base assembly 200 includes a first fixing seat 210, a second fixing seat 220, and a connector 230. The first fixing seat 210 and the second fixing seat 220 are respectively disposed on the side of the helmet body 100 located at the ear and are snap-fitted or screwed to the helmet body 100. The first fixing seat 210 is used to install the image acquisition unit 300, and the second fixing seat 220 is used to install the alarm unit 400. The two ends of the connector 230 are respectively connected to the first fixing seat 210 and the second fixing seat 220. The connector 230 has a wire channel inside, and wires are provided in the wire channel to realize power supply and data transmission.

[0024] In one embodiment, combined with Figure 4As shown, the first fixing base 210 includes a snap-fit ​​block 211, a connecting block 212, and a torque shaft 213. The helmet body 100 has a snap-fit ​​groove adapted to the snap-fit ​​block 211. The snap-fit ​​block 211 is snapped into the snap-fit ​​groove. The connecting block 212 is bolted to the side of the snap-fit ​​block 211 away from the helmet body 100. The connecting block 212 has a placement groove 214. The torque shaft 213 is bolted into the placement groove 214. The image acquisition unit 300 is fixed on the torque shaft 213.

[0025] In the above technical solution, the image acquisition unit 300 can be angled by the torque shaft 213 to facilitate image acquisition of the situation at various angles on site.

[0026] In one embodiment, combined with Figure 5 As shown, the second fixing base 220 includes a fixing block 221 and a mounting block 222. The fixing block 22 is connected to the helmet body 100 by bolts. The mounting block 222 is fixed to the fixing block 221. A mounting groove 223 is formed in the middle of the mounting block 222. The alarm unit 400 is connected to the mounting groove 223 by bolts.

[0027] In one embodiment, combined with Figure 6 As shown, the image acquisition unit 300 includes a first housing 310, an infrared camera 320, and a visible light camera 330. The first housing 310 is fixed in the placement groove 214 of the torque shaft 213 and can rotate to any angle and stop under the drive of the torque shaft 213. The infrared camera 320 and the visible light camera 330 are arranged sequentially from top to bottom on the side of the first housing 310 facing the scene. The infrared camera 320 and the visible light camera 330 are respectively connected to the processing unit 600 via signal.

[0028] In the above technical solution, the first housing 310 is made of PPS material, the infrared camera 320 has a resolution of ≥384×288, such as the SW30XHR-400 model; the visible light camera 330 has a resolution of ≥640×480, and the distance between the infrared camera 320 and the visible light camera 330 is 15mm to ensure that their viewing angles are consistent.

[0029] In one embodiment, the alarm unit 400 includes a second housing (not shown in the figure), a tri-color light (not shown in the figure), and a buzzer (not shown in the figure). The second housing is fixed in the mounting groove 223. The second housing is a mounting carrier made of PPS material. It only needs to meet the installation requirements of the tri-color light and buzzer on one side by snapping or bolting to the helmet body 100, and the other side needs to meet the installation requirements of the tri-color light and buzzer. The specific shape of the second housing is not limited.

[0030] In one embodiment, the tri-color light and buzzer are respectively fixed to the side of the second housing facing the scene, and the tri-color light and buzzer are respectively connected to the processing unit for signal transmission. The tri-color light and buzzer mentioned here are commonly used alarm devices in the art and can be obtained by purchase; therefore, their specific structures need not be described in detail here.

[0031] In one embodiment, the alarm unit 400 uses an STM32F103C8T6 microcontroller, which is connected to the processing unit 600 via Bluetooth to control the tri-color lights and buzzer to emit flashing lights and sounds to trigger an alarm.

[0032] In one embodiment, a manual button is also provided on the side of the alarm unit 400, which firefighters can use to control the tri-color light and buzzer to emit flashing light and sound to sound an alarm.

[0033] In one embodiment, the audio communication unit includes a bone conduction microphone and a flat speaker. The bone conduction microphone is fixed inside the helmet body 100 and at a distance of 70-90mm from the ear, preferably 80mm from the ear. The flat speaker is 3mm thick and is attached to the inner side of the helmet body 100 at the ear position. The bone conduction microphone and the flat speaker are respectively connected to the processing unit 600. The flat speaker and the bone conduction microphone can realize noise-reduced voice acquisition and clean voice playback.

[0034] In one embodiment, the display unit 500 includes a mask display module 510 and a wristwatch display module 520, which are respectively signal-connected to the processing unit 600 for displaying real-time images captured by different image acquisition units 300.

[0035] In one embodiment, combined with Figure 7 and Figure 8As shown, the mask display module 510 includes a mask body 511, a frame 512, an optical engine display screen 513, a battery 514, and a motherboard 515. The frame 512 is snapped onto the side of the mask body 511 near the face. The battery 514 and the motherboard 515 are respectively fixed to both ends of the frame 512. The optical engine display screen 513 is disposed in the middle of the frame 512. The optical engine display screen 513 is electrically connected to the battery 514 and the motherboard 515. The motherboard 515 is signal connected to the processing unit 600.

[0036] In one embodiment, the mask body 511 is the original protective mask used by firefighters, the frame 512 is made of explosion-proof PC material, the battery 514 has a capacity of 2000mAh, the motherboard 515 has WIFI function and charging port, the light-emitting surface of the optical engine display screen 513 is tilted downward at 15° with the horizontal direction, and the optical engine display screen 513 is connected to the frame 512 through a torsion straight shaft, which can be rotated to adapt to different users.

[0037] In one embodiment, combined with Figure 9 As shown, the wristwatch display module 520 includes an outer frame 521, a heat insulation layer 522, an air layer 523, a display layer 524, a fixing layer 525, and straps. One end of each strap is fixed to one side of the outer frame 521, and the other ends of the straps are connected by Velcro. The fixing layer 525 is mounted on the outer frame 521. The display layer 524, the air layer 523, and the heat insulation layer 522 are arranged sequentially from the inside to the outside on the fixing layer 525. A control board is provided on the fixing layer 525. The control board is electrically connected to the display layer 524 and is also connected to the processing unit 600 signal.

[0038] In one embodiment, the outer frame 521 is made of PPS material, the heat insulation layer 522 is heat-insulating glass, the display layer 524 is a display screen with a resolution of 320×240, an air layer 523 is formed between the display layer 524 and the heat insulation layer 522 with an interval, the thickness of the air layer 523 is 1mm, and a battery and a control board are fixed on the fixing layer 525, the battery having a capacity of 1500mAh.

[0039] In one embodiment, combined with Figure 10As shown, the processing unit 600 includes a housing and a communication module, an audio / video encoding module, an RF power amplifier module, and a power supply module disposed inside the housing. The housing is made of PPS material. The communication module preferably uses an XC7Z035 chip to implement PHY / MAC layer protocol processing. The audio / video encoding module preferably uses H.265 / H.264 compression technology to encode the original audio and video into TS. The RF power amplifier module operates in the frequency band of 1420-1500MHz to amplify the RF signal. The power supply module is a DC-DC converter that outputs a regulated 5V, 3A voltage. All modules are rigidly connected via connectors. The heat sink is made of 6061 aluminum alloy and filled with thermal grease to adhere to the circuit board.

[0040] The working process of the multifunctional fire helmet provided by the present invention is as follows: 1. Start-up and Networking: After the firefighters put on their helmets, they turn on the power supply of the firefighter processing unit 600 to power all components; the image acquisition unit 300 automatically initializes and is enabled in visible light mode by default (the high-intensity flashlight is activated simultaneously), and can be switched to infrared mode via the button on the wristwatch display module 520; the mask display module 510 and the wristwatch display module 520 automatically connect to the processing unit 600 via WIFI to establish a data link; 2. Image Acquisition and Transmission: Infrared camera 320 and visible light camera 330 acquire on-site images and transmit them to processing unit 600 via wires; audio and video encoding module compresses images into H.265 format (bitrate 2Mbps), audio into MPEG2 format, and packages them into UDP data packets; communication module distributes data packets to mask display module 510 (real-time decoding display) and wristwatch display module 520 (synchronous display), and simultaneously sends them to external communication devices via RF power amplifier module; 3. Voice Interaction: The bone conduction microphone collects the voices of firefighters (noise reduction processing, signal-to-noise ratio ≥40dB) and transmits them to the voice processing module of the processing unit 600; the processed voice signal is sent to the command terminal via the radio frequency module, and the voice signal from the command terminal is received at the same time to drive the flat speaker to play (volume adjustable, maximum 85dB). 4. Alarm Trigger: When the processing unit 600 receives an alarm command from the command terminal (via Bluetooth transmission), or when a firefighter presses a manual button, the microcontroller of the alarm unit 400 controls the three-color light (three long and three short flashes, frequency 2Hz) and the buzzer (1kHz sound, 1s interval) to start, which continues until the command is lifted; 5. Environmental Adaptation Adjustment: In the case of strong light, the image acquisition unit 300 can be switched to infrared mode via the watch button; if there is a difference in the user's pupil distance, the optical engine display screen 513 can be manually adjusted (up and down flip ±5°, left and right rotate ±8°); in the case of high temperature environment, the heat insulation layer 522 of the watch display module 520 and the foam will block heat to ensure that the internal components work normally at 80°C.

[0041] In one embodiment, the basic parameter configuration of the multifunctional fire helmet provided by the present invention is as follows: 1. Image acquisition unit 300: Infrared camera 320 with a resolution of 384×288, and visible light camera 330 with a resolution of 640×480; 2. Battery life: The processing unit 600 has a power capacity of 1800mAh, the mask display module 510 has a battery of 2000mAh, and the watch display module 520 has a battery of 1500mAh. 3. Environmental conditions: Temperature 25℃, humidity 60%, no salt spray; 4. Performance: Image acquisition: In visible light mode, the object detail recognition rate is 100% at 10m; in infrared mode, the human target recognition rate is 92% at 5m. Battery life: 2 hours of combined operation time (image acquisition + voice communication + display), with 10% battery remaining; Protection: IP67 rating test (immersion in 1m water for 30 minutes), no water entered any module, and all functions were normal.

[0042] In one embodiment, the intermediate parameter configuration of the multifunctional fire helmet provided by the present invention is as follows: 1. Image acquisition unit 300: Infrared camera 320 with a resolution of 400×300, and visible light camera 330 with a resolution of 720×540; 2. Battery life: The processing unit 600 has a power capacity of 2200mAh, the face mask display module 510 has a battery capacity of 2500mAh, and the watch display module 520 has a battery capacity of 1800mAh. 3. Environmental conditions: Temperature 50℃, humidity 80%, light salt spray (concentration 5%); 4. Performance: Image acquisition: In visible light mode, the object detail recognition rate is 98% at 15m; in infrared mode, the human target recognition rate is 95% at 8m. Battery life: 2.5 hours of combined operation time, with 15% battery remaining; High temperature resistance: After working at 80℃ for 30 minutes, the brightness of the mask display unit screen does not decrease, and the internal temperature of the watch display unit is ≤45℃.

[0043] In one embodiment, the end-value parameters of the multifunctional fire helmet provided by the present invention are configured as follows: 1. Image acquisition unit 300: Infrared camera 320 with a resolution of 500×375, visible light camera 330 with a resolution of 800×600; 2. Battery life: The processing unit 600 has a power capacity of 2500mAh, the face mask display module 510 has a battery capacity of 3000mAh, and the watch display module 520 has a battery capacity of 2000mAh. 3. Environmental conditions: Temperature 80℃, humidity 90%, moderate salt spray (concentration 10%). 4. Performance: Image acquisition: In visible light mode, the object detail recognition rate is 95% at 20m; in infrared mode, the human target recognition rate is 98% at 10m. Battery life: 3 hours of combined operation time, with 20% battery remaining; Anti-interference: Under interference in the 1450MHz band, the signal-to-noise ratio of voice communication is ≥35dB, and there is no lag in image transmission (packet loss rate <1%).

[0044] In one embodiment, the extreme value parameter configuration of the multifunctional fire helmet provided by the present invention is as follows: 1. Environmental conditions: Temperature -30℃ (low temperature), 260℃ (short-term high temperature, 5 min), salt spray concentration 15%; 2. Performance Effects: Low temperature: After being placed at -30℃ for 2 hours, all modules worked normally after startup, and there was no delay in image acquisition; Short-term high temperature: After working at 260℃ for 5 minutes, the watch display unit is effectively insulated, and the internal component temperature is ≤60℃; Salt spray: After being placed in a 15% salt spray environment for 48 hours, metal parts show no rust, and the insulation resistance of electrical interfaces is ≥100MΩ.

[0045] Performance verification of the fire helmet under the above parameters and conditions shows that the multifunctional fire helmet provided by this invention has the following beneficial effects: 1. Highly integrated functions, reducing burden and improving efficiency: It integrates image acquisition, audio communication, dual terminal display (mask + wristwatch), and sound and light alarm functions, eliminating the need for additional equipment. The total weight of the core components is only 800g (firefighter processing unit 430g + image acquisition module 190g + mask display unit 180g), which is 60% lighter than the traditional "helmet + external equipment" solution, improving the mobility and flexibility of firefighters.

[0046] 2. Strong environmental adaptability and stable reliability: The image acquisition module has an IP67 protection rating and uses a PPS high-temperature resistant shell (resistant to temperatures above 260℃) and silicone rubber sealing rings; the wristwatch display module achieves high-temperature resistance of 80℃ / 30min and 260℃ / 5min through heat-insulating glass (95% infrared reflectivity), air layer and heat-insulating foam, making it suitable for humid, salt spray and high-temperature environments on ships, and reducing the component failure rate to below 0.5%.

[0047] 3. Ergonomically optimized for easy operation: The mask display module achieves dual-degree-of-freedom adjustment via a torque-driven linear shaft, adapting to the head and face sizes of over 95% of adults (according to GBT 2428-1998). The optimized design of the optical engine output surface and horizontal viewing angle reduces eye fatigue from prolonged observation by 80%. The image acquisition module is installed via a dovetail groove and torque-driven rotating shaft, ensuring smooth angle adjustment and preventing damage to the data cable due to the limiting structure.

[0048] 4. Intelligent detection and search capabilities enable efficient rescue: Equipped with an infrared human body detection algorithm, it can identify human posture and targets obscured by obstacles in infrared images. The accuracy rate of identifying people to be rescued is over 92%, which is 3 times more efficient than manual visual search and shortens the rescue time at disaster sites.

[0049] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-functional firefighting helmet characterized by, The helmet body comprises: a base assembly which is detachably connected to the outside of the helmet body and arranged along the circumference of the helmet body; an image acquisition unit which is detachably connected to one side of the base assembly and used for acquiring visible light images and infrared thermal images of the scene; an alarm unit which is detachably connected to the other side of the base assembly and used for issuing sound and light alarms; an audio communication unit which is arranged inside the helmet body and used for realizing voice interaction; a processing unit which is signal connected with the image acquisition unit, the alarm unit and the audio communication unit respectively to realize data processing and issue control instructions. The display unit comprises a mask display module and a wristwatch display module which are signal connected with the processing unit respectively and used for displaying real-time pictures acquired by different image acquisition units.

2. The multi-functional firefighting helmet of claim 1, wherein, The base assembly comprises a first fixing seat, a second fixing seat and a connecting piece, the first fixing seat and the second fixing seat are arranged on the sides of the helmet body located at the ear parts and are clamped or screwed with the helmet body, the first fixing seat is used for mounting the image acquisition unit, the second fixing seat is used for mounting the alarm unit, the connecting piece is connected with the first fixing seat and the second fixing seat at two ends, the connecting piece has a wire channel inside, and wires are arranged in the wire channel to realize power supply and data transmission.

3. The multi-functional firefighting helmet of claim 1, wherein, The first fixing seat comprises a clamping block, a connecting block and a torsion shaft, the helmet body is formed with a clamping groove matched with the clamping block, the clamping block is clamped in the clamping groove, the connecting block is screwed on the side of the clamping block away from the helmet body, the connecting block is formed with a placing groove, the torsion shaft is screwed in the placing groove, and the image acquisition unit is fixed on the torsion shaft.

4. The multi-functional firefighting helmet of claim 3, wherein, The second fixing seat comprises a fixing block and a mounting block, the fixing block is screwed on the helmet body, and the mounting block is fixed on the fixing block, the mounting block is formed with a mounting groove in the middle, and the alarm unit is screwed in the mounting groove.

5. The multi-functional firefighting helmet of claim 3, wherein, The image acquisition unit comprises a first shell, an infrared light camera and a visible light camera, the first shell is fixed on the torsion shaft, the infrared light camera and the visible light camera are arranged on the side of the first shell in sequence from top to bottom and are aligned with the scene, and the infrared camera and the visible light camera are signal connected with the processing unit respectively.

6. The multi-functional firefighting helmet of claim 4, wherein, The alarm unit comprises a second shell, a three-color lamp and a buzzer, the second shell is fixed in the mounting groove, the three-color lamp and the buzzer are fixed on the side of the second shell aligned with the scene, and the three-color lamp and the buzzer are signal connected with the processing unit respectively.

7. The multi-functional firefighting helmet of claim 5, wherein, The audio communication unit comprises a bone conduction microphone and a flat loudspeaker, the bone conduction microphone is fixed inside the helmet body at a distance of 70-90 mm from the ear part, the flat loudspeaker is attached to the inner side of the helmet body at the position of the ear part, and the bone conduction microphone and the flat loudspeaker are signal connected with the processing unit respectively.

8. The multi-functional firefighting helmet of claim 1, wherein, ​ 9. The multi-functional firefighting helmet of claim 2, wherein, The mask display module comprises a mask body, a frame, an optical machine display screen, a battery and a mainboard, the frame is clamped on one side of the mask body close to the face, the battery and the mainboard are fixed on two ends of the frame respectively, the optical machine display screen is arranged on the middle part of the frame, the optical machine display screen is electrically connected with the battery and the mainboard respectively, and the mainboard is signal connected with the processing unit.

10. The multi-functional firefighting helmet of claim 2, wherein, The wristwatch display module comprises an outer frame, a heat insulation layer, an air layer, a display layer, a fixing layer and a bandage, one end of two bandages is fixed on two sides of the outer frame respectively, the other end of the two bandages is connected through a magic tape, the fixing layer is installed on the outer frame, the display layer, the air layer and the heat insulation layer are sequentially arranged on the fixing layer from inside to outside, a control board is arranged on the fixing layer, the control board is electrically connected with the display layer, and the control board is signal connected with the processing unit.

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