Firefighter uniform comfortable to wear

Abstract

The invention relates to the technical field of firefighter uniform, in particular to a comfortable-to-wear firefighter uniform which comprises a firefighter uniform body, a high-definition camera integrated at the upper end of a helmet, a physiological monitoring bracelet, a GPS (global positioning system) positioning module, a data processing unit and a wireless transmission module, the high-definition camera, the physiological monitoring bracelet and the GPS positioning module are electrically connected with the data processing unit; according to the system, the heart rate, blood oxygen, vital capacity and blood pressure of a fireman are detected in real time through the physiological monitoring bracelet, intelligent analysis is carried out in combination with the data processing unit, dynamic evaluation of the health state of the fireman is provided for a command center, accordingly, abnormal conditions are found in time, the wireless transmission module and the iBeacon local area network are adopted for cooperative work, and the system is convenient to use. Therefore, stable data communication can still be maintained in a severe fire scene environment, and the problem of data interruption caused by signal interference of a traditional firefighter uniform is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting clothing, and in particular to a fire-fighting clothing that is comfortable to wear. Background Art

[0002] Fire suits are key protective equipment for firefighters during fire rescue. Traditional fire suits mainly use flame-retardant materials and heat-insulating designs to protect against direct damage from high temperatures and flames. As firefighting tasks become more complex, modern fire suits are gradually integrated with electronic equipment, such as basic communication modules and simple positioning devices, to improve the efficiency and safety of rescue. However, existing fire suits still have obvious limitations in terms of intelligence, data interaction capabilities and emergency response.

[0003] Although firefighting suits in existing technologies can provide basic protection, they are prone to communication interruptions in the complex environment of a fire scene, making it impossible to transmit firefighters' vital signs data and on-site videos in real time. The command center finds it difficult to grasp the dynamics of the scene in a timely manner, thus affecting rescue decisions. For example, in the presence of thick smoke, high temperatures or obstructions by building structures, conventional wireless communication (such as Wi-Fi or 4G) signals are easily interfered with, resulting in delayed or lost data transmission. Abnormal vital signs or location information of firefighters cannot be obtained in a timely manner, thereby increasing the risk of rescue. In addition, existing firefighting suits lack intelligent multi-parameter monitoring and automated early warning mechanisms, and cannot actively trigger alarms when firefighters experience dangerous conditions such as high body temperature, abnormal heart rate or hypoxia. They only rely on manual observation or regular reporting, and there is a problem of delayed response.

[0004] Therefore, in order to solve the above problems, the present invention provides a fire-fighting suit that is comfortable to wear. Summary of the Invention

[0005] In order to overcome the problems of non-real-time vital sign monitoring and delayed emergency response in existing fire-fighting suits, the present invention proposes a fire-fighting suit that is comfortable to wear.

[0006] The technical solution of the present invention is: a fire suit that is comfortable to wear, comprising: a fire suit body, a high-definition camera integrated on the top of the helmet, a physiological monitoring bracelet, a GPS positioning module, a data processing unit and a wireless transmission module arranged on the chest and abdomen; The high-definition camera, physiological monitoring bracelet, and GPS positioning module are electrically connected to the data processing unit respectively; The fire-fighting suit body is lined with a flexible circuit board. The flexible circuit board is made of polyimide as the substrate and etched with copper wires. The surface is covered with a silicone flame-retardant layer. The temperature range is -40°C to +200°C, and the bending radius is ≥5mm. The data processing unit, wireless transmission module and sensors are integrated on a flexible circuit board through elastic connectors to form an integrated monitoring system that is resistant to high temperature distortion. The wireless transmission module includes a 2.4GHz radio frequency link and a 5.8GHz emergency direct connection link that work together. The 2.4GHz link is networked with the fire scene iBeacon base station based on the IEEE 802.15.4 protocol, and the 5.8GHz link establishes a line-of-sight direct connection with the command vehicle through a directional antenna. The physiological monitoring bracelet has a built-in dynamic sampling algorithm and motion artifact elimination module, and uses accelerometer-assisted Kalman filtering to correct heart rate, blood oxygen, vital capacity and blood pressure data in real time under the fire scene motion environment.

[0007] Preferably, the physiological monitoring bracelet has a built-in multi-parameter sensor module, including a photoelectric heart rate sensor, a blood oxygen detection module, a piezoelectric respiratory sensor and a micro barometer, which can obtain the firefighter's heart rate, blood oxygen saturation, vital capacity and blood pressure in real time through a dynamic sampling algorithm. The physiological monitoring bracelet communicates with the data processing unit, the transmission interval is adjustable, and local storage is activated when the signal is lost.

[0008] Preferably, the dual-link dynamic switching mechanism of the wireless transmission module is controlled by the data processing unit. When the 2.4GHz link signal strength is greater than -85dBm, Mesh networking transmission is adopted. When the signal attenuates to ≤-85dBm, it automatically switches to 5.8GHz directional direct connection.

[0009] Preferably, the data processing unit has a built-in emergency state triggering mechanism, and the emergency state triggering mechanism has a built-in multi-level decision logic: Level 1 warning, heart rate > 150 bpm or blood oxygen < 90%: the helmet LED indicator lights up; Level 2 warning, heart rate > 170bpm or blood oxygen < 88%: activate the bracelet vibration alarm; Level 3 warning, heart rate > 180 bpm or blood oxygen < 85%: Activate the SOS radio frequency signal and helmet strobe, lock the GPS coordinates and prioritize transmission via the 5.8 GHz link.

[0010] Preferably, the battery compartment of the physiological monitoring bracelet adopts a magnetic waterproof structure, and the built-in supercapacitor ensures that the system continues to work for ≥30 seconds when the battery is replaced, and the total weight of the bracelet is ≤50g.

[0011] Preferably, the elastic connector of the flexible circuit board adopts shape memory alloy contacts, which can maintain a contact impedance of ≤10mΩ at a high temperature of 200°C.

[0012] Preferably, the 2.4GHz link of the wireless transmission module adopts the TDMA time division multiple access protocol, so that multiple fire service terminals and iBeacon base stations can communicate in an orderly and time-sharing manner. Based on the Mesh networking architecture, when a base station fails, the data automatically bypasses the adjacent nodes to achieve self-healing network coverage in the fire environment. The 5.8GHz link dynamically adjusts the beam direction through the phased array antenna, tracks the movement position of the command vehicle in real time, breaks through the limitations of building obstructions, and maintains millimeter wave high-speed direct connection in non-line-of-sight scenarios.

[0013] Beneficial effects of the present invention: 1. The physiological monitoring bracelet detects the firefighters' heart rate, blood oxygen, lung capacity, blood pressure and other key vital signs in real time. Combined with the data processing unit for intelligent analysis, it provides the command center with a dynamic assessment of the firefighters' health status, thereby promptly detecting abnormal situations. The wireless transmission module works in conjunction with the iBeacon local area network to ensure stable data communication in the harsh environment of the fire scene, effectively solving the data interruption problem caused by signal interference in traditional fire suits.

[0014] 2. By integrating a high-definition camera into the fire suit helmet, it is possible to capture and transmit first-person perspective images of the fire scene in real time, allowing the command center to intuitively grasp the on-site situation, making up for the lack of visual information in traditional fire suits, thereby improving the accuracy of rescue decisions. The GPS positioning module can track the location of firefighters in real time, ensuring reliable return of location information even in complex fire environments, thereby avoiding the risk of loss of connection due to signal loss and significantly improving the efficiency of rescue response.

[0015] 3. Each functional module is integrated with the fireproof suit body, and the wearing comfort is optimized through flexible circuit wiring. While enhancing the intelligent function, it does not affect the protective performance and mobility of the fireproof suit, meeting the actual combat needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Shown is a schematic diagram of the structure of the physiological monitoring wristband of the present invention; Figure 3 Shown is a schematic diagram of the high-definition camera structure of the present invention; Figure 4 Shown is a schematic diagram of the workflow of the high-definition camera of the present invention; Figure 5 Shown is a schematic diagram of the workflow of the physiological monitoring wristband of the present invention.

[0017] Explanation of the accompanying symbols: 1. Fire suit body; 2. High-definition camera; 3. Physiological monitoring bracelet; 4. Shell; 5. Elastic strap; 6. Display screen; 7. Fixing block 1; 8. Fixing block 2; 9. LED prompt light. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 The present invention provides an embodiment: a fire-fighting suit that is comfortable to wear, comprising: a fire-fighting suit body 1, a high-definition camera 2 integrated on the upper end of a helmet, a physiological monitoring bracelet 3, a GPS positioning module, a data processing unit and a wireless transmission module arranged on the chest and abdomen; The high-definition camera 2, the physiological monitoring bracelet 3, and the GPS positioning module are electrically connected to the data processing unit respectively; The fire-fighting suit body 1 is lined with a flexible circuit board. The flexible circuit board is made of polyimide as the substrate and etched with copper wires. The surface is covered with a silicone flame-retardant layer. The temperature range is -40°C to +200°C, and the bending radius is ≥5mm. The data processing unit, wireless transmission module and sensors are integrated on a flexible circuit board through elastic connectors to form an integrated monitoring system that is resistant to high temperature distortion. The wireless transmission module includes a 2.4GHz radio frequency link and a 5.8GHz emergency direct connection link that work together. The 2.4GHz link is networked with the fire scene iBeacon base station based on the IEEE 802.15.4 protocol, and the 5.8GHz link establishes a line-of-sight direct connection with the command vehicle through a directional antenna. The physiological monitoring bracelet 3 has a built-in dynamic sampling algorithm and a motion artifact elimination module, and uses an accelerometer-assisted Kalman filter to correct heart rate, blood oxygen, vital capacity and blood pressure data in real time under the fire scene motion environment.

[0020] Further, after the firefighter wearing the intelligent fire suit enters the fire scene, the high-definition camera 2 integrated in the front of the helmet real-time shoots the fire scene environment video, the GPS positioning module continuously obtains the firefighter position coordinates, the physiological monitoring bracelet 3 synchronously collects the physiological data such as heart rate, blood oxygen, vital capacity and blood pressure, and the above-mentioned video, position and physiological data are transmitted to the data processing unit in the chest and abdomen through electrical connection for integrated processing, and then the processed data is transmitted to the rear command system in real time by the wireless transmission module; the present application solves the problem of single monitoring data of the traditional fire suit through synchronous collection and transmission of multi-source data, simultaneously realizes seamless integration of intelligent monitoring function by using modular integrated design while ensuring the fireproof performance, and ensures the collaborative operation of each functional module through centralized control of the data processing unit, finally achieves the three purposes of improving the fire situation awareness, ensuring the safety of the firefighter and optimizing the rescue command.

[0021] Please refer to Figure 2 , the physiological monitoring bracelet 3 includes a shell 4, an elastic band 5 and a display screen 6, the display screen 6 is embedded in the inside of the shell 4, the elastic band 5 is fixedly connected to the left and right ends of the shell 4, the shell 4 of the physiological monitoring bracelet 3 is built-in multi-parameter sensor module, including photoelectric heart rate sensor, blood oxygen detection module, piezoelectric breath sensor and microbarograph, the firefighter wears the physiological monitoring bracelet 3 on the wrist through the elastic band 5, and the heart rate, blood oxygen saturation, vital capacity and blood pressure of the firefighter are obtained in real time through dynamic sampling algorithm, the physiological monitoring bracelet 3 and the data processing unit use BLE5.0 protocol communication, the transmission interval is adjustable, and local storage is started when the signal is lost.

[0022] Please refer to Figure 3 , the helmet side end of the fire suit is fixedly connected with a fixed block one 7, the end away from the helmet of the fixed block one 7 is fixedly connected with a fixed block two 8, the surface of the fixed block one 7 is provided with an LED prompt lamp 9, and the surface of the fixed block two 8 is provided with a high-definition camera 2, the situation of the fire scene can be monitored in real time through the high-definition camera 2, when the firefighter appears abnormal, the LED prompt lamp 9 will be lit, so as to prompt the firefighter.

[0023] Further, the physiological monitoring bracelet 3 collects the firefighter's heart rate in real time in the range of 30-250bpm through the built-in photoelectric PPG sensor, analyzes the blood oxygen saturation through infrared / red light dual-wavelength spectrum, calculates the vital capacity based on the waveform integration of the piezoelectric breathing sensor, and calculates the blood pressure by using the pulse wave transmission time PTT algorithm, etc. Key physiological indicators, the collected data is transmitted to the data processing unit of the fire suit through the low-power BLE 5.0 protocol at a default frequency of 1 second / second, and the local storage function is automatically enabled when the wireless signal is interrupted; the present application solves the defect that the traditional fire suit cannot comprehensively monitor the vital signs through the multi-modal biosensing technology, and effectively deals with the unstable working conditions of the fire field through the dual protection mechanism of Bluetooth transmission and local storage, thereby providing the command center with real-time and accurate physiological state monitoring of the firefighters, thereby significantly improving the safety warning capability of emergency rescue.

[0024] The wireless transmission module includes a 2.4GHz radio frequency link and a 5.8GHz emergency direct link, wherein the 2.4GHz link adopts IEEE 802.15.4 protocol and iBeacon base station networking, supports frequency hopping anti-jamming, and the 5.8GHz link uses a directional antenna to establish a point-to-point connection with the command vehicle within the line-of-sight range, and is powered by a lithium sub-battery built in the fireproof suit.

[0025] Further, the wireless transmission module adopts a dual-band cooperative working mode: in normal operation, the 2.4GHz radio frequency link establishes a Mesh self-organizing network with the iBeacon base station deployed in the fire field based on the IEEE 802.15.4 protocol, effectively avoiding the same frequency interference of Wi-Fi / Bluetooth devices through frequency hopping technology, thereby ensuring stable connection in complex environments such as thick smoke and high temperature, when encountering building shielding or extreme environment leading to 2.4GHz signal attenuation, the 5.8GHz emergency direct link is immediately activated, and a high-gain directional antenna is used to establish a point-to-point millimeter wave communication with the command vehicle, the dual-link realizes seamless transition through an intelligent switching algorithm, and the whole module adopts a dynamic power consumption management technology to realize long-time endurance with the lithium sub-battery built in the fireproof suit; the present application solves the problem that a single frequency band is easily invalid in a complex fire field through a dual-band redundant design, and breaks through the signal attenuation limit caused by building shielding by means of directional transmission of millimeter wave, finally realizes reliable transmission of fire field video, positioning data and physiological parameters, and provides uninterrupted data support for command decision.

[0026] The iBeacon local area network transmission base point is deployed on the key path of the fire field, one is set every 50m, adopts an explosion-proof shell and is built-in with a thermal barrier coating, the base point forms a self-healing Mesh network by networking with the fire suit and adjacent base points through TDMA time division multiple access protocol, the mobile relay vehicle is equipped with an omnidirectional antenna array, the receiving radius is ≥500m, and the vehicle-mounted processor corrects and aggregates multiple signals.

[0027] Furthermore, explosion-proof iBeacon transmitting base points are deployed at intervals of 50m in the fire environment. Each base point uses an IP67 protective shell and a built-in high-temperature resistant thermal barrier coating. When firefighters enter the fire scene, the wireless transmission module of their clothing automatically establishes a TDMA time-division multiple access connection with the nearest 3-5 base points to form a Mesh network with self-healing capabilities. Each base point receives the video, positioning and physiological data uploaded by the fire suit in real time through the 2.4GHz frequency band, and uses a multi-hop relay method to aggregate the data to a mobile relay vehicle. The relay vehicle is equipped with a four-element phased array antenna for spatial diversity reception of multiple signals, and the transmission bandwidth is increased to 10Mbps through carrier aggregation technology. At the same time, the on-board processor performs Reed-Solomon forward error correction, LZMA lossless compression and AES-256 encryption on the data, and finally transmits it back to the command center via a Ka-band satellite link or a 5G private network.

[0028] The mobile relay vehicle is equipped with a network interference suppression module, which includes an adaptive filter, a digital phase-locked loop and a software-defined radio unit. It monitors the noise power in the 2.4GHz frequency band in real time and adjusts the transmission power. The processed data is uploaded to the command center via a Ka-band satellite link or a 5G private network, and the end-to-end transmission delay is less than 1 second.

[0029] Furthermore, the network interference suppression module carried by the mobile relay vehicle first performs a full-spectrum scan of the 2.4GHz frequency band through a software-defined radio unit, and detects the environmental noise power in real time. When a co-frequency interference source is identified, the adaptive filter is immediately activated, and the target signal is purified in conjunction with the digital phase-locked loop. The processed data stream is then passed through a 32-bit floating-point DSP chip for real-time equalization and interference elimination, which improves the signal-to-noise ratio by more than 20dB. At the same time, the system dynamically adjusts the transmission power and frequency to ensure that QPSK modulation can be maintained in the core area of ​​the fire scene with the worst electromagnetic environment. The final data is transmitted redundantly through dual channels: the main channel uses a Ka-band satellite link to ensure basic communications, and the backup channel uses a 5G private network to achieve high-speed backhaul. The end-to-end transmission delay is strictly controlled within 1 second.

[0030] The data processing unit has a built-in emergency trigger mechanism. When it detects a heart rate greater than 180 bpm or blood oxygen less than 85%, it automatically sends a level 3 alarm signal to the command center and activates the positioning strobe.

[0031] The emergency state trigger mechanism has a built-in multi-level judgment logic. The helmet LED prompt light 9 is lit during the first-level warning, the vibration alarm is activated during the second-level warning, and the SOS radio frequency signal is automatically activated and continuously flashes during the third-level warning. At the same time, the last valid coordinates are locked and sent to the command center.

[0032] Furthermore, when the data processing unit continuously receives the heart rate, blood oxygen and body temperature data uploaded by the physiological monitoring bracelet 3, the system uses a sliding window algorithm to perform dynamic threshold analysis. If the heart rate is detected to be greater than 150bpm or the blood oxygen is less than 90%, a first-level warning is triggered. At this time, the helmet LED indicator 9 lights up a yellow warning. When the parameters deteriorate to heart rate greater than 170bpm or blood oxygen less than 88%, the second-level warning is activated, and a 50Hz tactile vibration is generated through the built-in linear resonant actuator to remind firefighters. When the heart rate is greater than 180bpm or blood oxygen is less than 85% or the body temperature is greater than 39℃, the third-level warning conditions are met, and the system immediately activates a triple emergency response - first, an SOS distress signal containing an ID code is sent through the 433MHz radio frequency module, the helmet strobe alarm is simultaneously activated, and the current GPS coordinates are locked and uploaded to the command center through the wireless transmission module in priority.

[0033] The fire suit body 1 is lined with a flexible circuit board. The flexible circuit board uses a polyimide substrate to etch copper wires and is covered with a silicone flame retardant layer. The circuit board is connected to each module through an elastic connector. The overall bending radius is ≥5mm and the temperature resistance range is -40℃ to +200℃.

[0034] The silicone wristband of the physiological monitoring bracelet 3 is embedded with a nano-silver antibacterial layer, the battery compartment is set to be magnetic, the waterproof interface meets the IP68 standard, and the built-in supercapacitor can maintain the system operation for ≥30 seconds when the battery is replaced. The total weight of the bracelet is ≤50g.

[0035] See also Figure 4 , further, the workflow of HD camera 2 is explained: HD Camera 2 is automatically activated when firefighters enter the fire scene, continuously capturing first-person perspective fire scene footage at 1080p resolution and 30fps frame rate.

[0036] The original video stream is pre-processed three times: first, automatic exposure adjustment is dynamically adjusted according to the smoke concentration, then 3D noise reduction is performed to suppress high-temperature thermal radiation noise, and then edge enhancement is performed to highlight the structural details of the building.

[0037] The signal quality detection module evaluates the channel status in real time. When the iBeacon network signal strength is greater than -85dBm, 2.4GHz Mesh multi-hop transmission is selected to transmit to the mobile relay vehicle. When the signal attenuates below -85dBm, it automatically switches to 5.8GHz directional direct connection to transmit the data to the fire command vehicle.

[0038] Video data is sent to the command center server for real-time display, including: picture-in-picture display, which displays the main screen + three enlarged screens of key areas; thermal imaging overlay, which is used to mark high-temperature areas in red; and smart marking to automatically select suspected life forms.

[0039] See also Figure 5 , further, the workflow of the HD camera is explained: The physiological monitoring bracelet 3 uses a photoelectric PPG sensor to collect firefighters' heart rate in real time within the range of 30-250bpm, analyzes blood oxygen saturation through infrared / red light dual-wavelength spectroscopy, calculates vital capacity based on waveform integration of a piezoelectric respiratory sensor, and uses the pulse wave transmission time (PTT) algorithm to estimate key physiological indicators such as blood pressure.

[0040] For the violent motion scenes in the fire scene, an accelerometer-assisted motion artifact elimination algorithm is used, an adaptive Kalman filter is used to correct data drift in real time, and a sliding window mean filter is used to smooth the sudden change interference.

[0041] When no emergency occurs, the data is sent to the data processing unit on the fire service end via Bluetooth, and the data processing unit sends the data to the command center via the wireless transmission module. The command center can view the firefighter's physical condition in real time through the dashboard; when an emergency occurs, the data is stored locally and a warning is triggered. The helmet LED prompt light 9 is lit during the first-level warning, the vibration alarm is activated during the second-level warning, and the SOS radio frequency signal is automatically activated and continuously flashed during the third-level warning. The firefighter's physical data is sent to the data processing unit, and the data processing unit sends the data to the command center via the wireless transmission module. The command center can view the firefighter's physical condition in real time through the dashboard.

[0042] Further, the workflow of the present invention is described, specifically: Firefighters wear fire suits and enter the fire scene to work. The fireproof suit body 1 provides basic protection for firefighters. The high-definition camera 2 integrated in the helmet automatically turns on and starts to shoot real-time video of the fire scene environment. The video data is transmitted to the data processing unit in the chest and abdomen through the built-in data cable.

[0043] The GPS positioning module continuously obtains the latitude and longitude coordinate information of the firefighters at a frequency of 1Hz. The positioning data is transmitted to the data processing unit in real time through the copper wires of the flexible circuit board. At the same time, the physiological monitoring bracelet 3 collects heart rate, blood oxygen, vital capacity and blood pressure data through the PPG sensor and piezoelectric sensor, and then transmits it wirelessly to the data processing unit.

[0044] The data processing unit encapsulates and compresses the received video stream, positioning coordinates and physiological parameters, binds the GPS data to the timestamp, and implements sliding window smoothing filtering on the physiological data. The processed data packets are sent to the nearest iBeacon local area network transmission base point via the 2.4GHz radio frequency link of the wireless transmission module.

[0045] Multiple iBeacon transmission base points deployed in the fire scene are interconnected through Mesh networking, using the TDMA time division multiple access protocol to forward data packets. Each base point transmits data to a mobile relay vehicle in a multi-hop relay manner. Reed-Solomon forward error correction coding and LZMA lossless compression are implemented during the transmission process to ensure reliable data transmission in complex fire environment.

[0046] The mobile relay vehicle receives data forwarded by each iBeacon base point through a phased array antenna. The network interference suppression module performs adaptive filtering and digital phase-locked loop synchronization processing on the signal to eliminate multipath interference and noise effects, and improve the signal-to-noise ratio by more than 20dB. The processed data is sent to the fire command vehicle and fire command center via Ka-band satellite link or 5G private network.

[0047] After receiving the data, the fire command center decapsulates it and displays the video stream in real time through the WebGL 3D engine. The GPS coordinates are dynamically updated on the electronic map, and physiological parameters are visualized in the form of a line graph. When the system detects a third-level warning condition such as a heart rate greater than 180bpm or blood oxygen less than 85%, an alarm window automatically pops up and records the event log, while sending an audible and visual alarm to the on-site command personnel.

[0048] In an emergency, the emergency mechanism of the fire suit is automatically activated, the 433MHz radio frequency module continuously sends an SOS signal containing the firefighter's ID, the helmet's strobe alarm operates at a frequency of 5Hz, and the GPS coordinate information is marked as the highest priority data and sent directly to the command vehicle through the 5.8GHz emergency direct link of the wireless transmission module, thereby ensuring that rescue personnel can quickly locate the firefighter in distress.

[0049] Furthermore, the present invention provides an embodiment of a conventional fire rescue operation process: Firefighters wearing smart fire suits enter the fire scene to perform search and rescue missions. The flame-retardant layer of the fire suit body 1 effectively isolates the fire from high temperatures of 800°C. The helmet's high-definition camera 2 captures the scene at a 1080p resolution and 30fps. The GPS module updates the positioning coordinates once a second. The physiological monitoring bracelet 3 detects normal data in real time: a heart rate of 125bpm and a blood oxygen level of 98%.

[0050] All collected data is transmitted to the data processing unit through a flexible circuit board. The video is compressed to a 4Mbps bit rate using H.265 encoding, the positioning data is timestamped, and the physiological parameters are processed by Kalman filtering and sent to the iBeacon base station node 3 meters away via a 2.4GHz radio frequency link. The transmission delay is less than 50ms.

[0051] The node forwards the data through two relay nodes to a mobile relay vehicle via a Mesh network. Reed-Solomon coding is used to correct 2% of data packet errors along the way. The relay vehicle then performs adaptive equalization on the signal, increasing the signal-to-noise ratio from 15dB to 35dB. The data is then uploaded to the command center via a 5G private network at a rate of 8Mbps.

[0052] The large screen in the command center simultaneously displayed the real-time images, movement trajectories and vital signs curves of the firefighters. The commander discovered that there were trapped people in the room on the east side based on the images, and immediately guided the firefighters to the rescue through the intercom system.

[0053] Furthermore, the present invention provides an embodiment of an emergency medical rescue process: When a firefighter suddenly felt unwell in a smoke-filled environment, the physiological monitoring bracelet 3 detected that his heart rate suddenly rose to 185bpm and his blood oxygen dropped to 83%. The data processing unit immediately triggered a level 3 warning, the helmet LED strobe alarm started at a frequency of 5Hz, and the 433MHz RF module continued to transmit an SOS signal containing an ID.

[0054] The system automatically increases the physiological data sampling rate to 2Hz, marks the GPS positioning information as an emergency data packet, and transmits it preferentially via the 5.8GHz link. A red alarm window pops up on the command center screen, the sound and light alarm is activated, and the last coordinates are locked on the map (32.05° north latitude, 118.78° east longitude).

[0055] Based on the positioning signal, the rescue team found the unconscious firefighter within three minutes. The medical team quickly diagnosed the firefighter with heat stroke based on eight minutes of physiological data stored in the physiological monitoring bracelet 3 (including a complete heart rate curve from 120bpm to 185bpm) and immediately implemented targeted treatment.

[0056] Furthermore, the present invention provides an embodiment of a multi-personnel collaborative combat process: During a high-rise fire, 12 firefighters simultaneously wore firefighting suits to carry out rescue work. The iBeacon modules in each suit automatically formed a Mesh network. Mobile relay vehicles used spatial diversity technology to simultaneously receive multiple data channels, achieving a total system throughput of 24Mbps.

[0057] The command center's large screen displays the following information in different areas: Team members 1-6 are in the west corridor (with a positioning cluster spacing of 3-5m), and team members 7-12 are in the east stairwell. Team member 9's temperature is shown to be 38.5°C, and the system automatically switches the screen to the main window for focused monitoring.

[0058] When a fire occurred on the west side, the commander immediately sent a retreat order to team members 1-6 through the 5.8GHz broadcast channel. The vibration alarms on each team member's helmet were activated simultaneously, and the retreat route was dynamically planned based on real-time positioning data to avoid conflict with the route of the reinforcement team.

[0059] Through the above steps, the physiological monitoring bracelet detects the firefighters' key vital signs data in real time, and combines it with the data processing unit for intelligent analysis, providing the command center with a dynamic assessment of the firefighters' health status, so as to detect abnormal situations in a timely manner. In addition, the wireless transmission module is used to work in conjunction with the iBeacon local area network to ensure that stable data communication can be maintained even in the harsh environment of the fire scene, so as to solve the problems of existing firefighting suits with non-real-time vital signs monitoring and delayed emergency response.

Claims

1. A fire-fighting suit that is comfortable to wear, characterized in that: The fire-fighting suit comprises: a fire-fighting suit body (1), a high-definition camera (2) integrated on the upper end of the helmet, a physiological monitoring wristband (3), a GPS positioning module, a data processing unit and a wireless transmission module arranged on the chest and abdomen; The high-definition camera (2), the physiological monitoring bracelet (3), and the GPS positioning module are electrically connected to the data processing unit respectively; The fire-fighting suit body (1) is lined with a flexible circuit board, which is made of polyimide as a substrate and etched with copper wires, and is covered with a silicone flame-retardant layer on the surface. The temperature range is -40°C to +200°C, and the bending radius is ≥5mm; The data processing unit, wireless transmission module and sensors are integrated on a flexible circuit board through elastic connectors to form an integrated monitoring system that is resistant to high temperature distortion. The wireless transmission module includes a 2.4GHz radio frequency link and a 5.8GHz emergency direct connection link that work together. The 2.4GHz link is networked with the fire scene iBeacon base station based on the IEEE 802.15.4 protocol, and the 5.8GHz link establishes a line-of-sight direct connection with the command vehicle through a directional antenna. The physiological monitoring bracelet (3) has a built-in dynamic sampling algorithm and a motion artifact elimination module, and uses an accelerometer-assisted Kalman filter to correct the heart rate, blood oxygen, vital capacity and blood pressure data in a fire scene motion environment in real time.

2. The fire-fighting suit according to claim 1, characterized in that: The physiological monitoring bracelet (3) has a built-in multi-parameter sensor module, including a photoelectric heart rate sensor, a blood oxygen detection module, a piezoelectric respiratory sensor and a micro barometer. The firefighter's heart rate, blood oxygen saturation, vital capacity and blood pressure are acquired in real time through a dynamic sampling algorithm. The physiological monitoring bracelet (3) communicates with the data processing unit, the transmission interval is adjustable, and local storage is activated when the signal is lost.

3. The fire-fighting suit according to claim 1, characterized in that: The dual-link dynamic switching mechanism of the wireless transmission module is controlled by the data processing unit. When the 2.4GHz link signal strength is greater than -85dBm, Mesh networking transmission is adopted. When the signal attenuates to ≤-85dBm, it automatically switches to 5.8GHz directional direct connection.

4. The fire-fighting suit that is comfortable to wear according to claim 1, characterized in that: The data processing unit has a built-in emergency state trigger mechanism, and the emergency state trigger mechanism has a built-in multi-level decision logic: Level 1 warning, heart rate > 150 bpm or blood oxygen < 90%: the helmet LED indicator lights up (9); Level 2 warning, heart rate > 170bpm or blood oxygen < 88%: activate the bracelet vibration alarm; Level 3 warning, heart rate > 180 bpm or blood oxygen < 85%: Activate the SOS radio frequency signal and helmet strobe, lock the GPS coordinates and prioritize transmission via the 5.8 GHz link.

5. The fire-fighting suit that is comfortable to wear according to claim 1, characterized in that: The battery compartment of the physiological monitoring wristband (3) adopts a magnetic waterproof structure, and a built-in supercapacitor ensures that the system continues to work for ≥30 seconds when the battery is replaced, and the total weight of the wristband is ≤50g.

6. The fire-fighting suit that is comfortable to wear according to claim 1, characterized in that: The elastic connector of the flexible circuit board adopts shape memory alloy contacts, which can maintain contact impedance ≤10mΩ at a high temperature of 200°C.

7. The fire-fighting suit according to claim 1 is characterized in that: The 2.4GHz link of the wireless transmission module adopts the TDMA time division multiple access protocol, enabling multiple fire service terminals to communicate with the iBeacon base station in an orderly time-sharing manner. Based on the Mesh networking architecture, when a base station fails, the data automatically bypasses the adjacent nodes to achieve self-healing network coverage in the fire environment. The 5.8GHz link dynamically adjusts the beam direction through the phased array antenna, tracks the movement of the command vehicle in real time, breaks through the limitations of building obstructions, and maintains millimeter wave high-speed direct connection in non-line-of-sight scenarios.

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