Portable multifunctional dust removal breathing device and breathing system

Abstract

The application discloses a portable multifunctional dust removal breathing device and a breathing system, and relates to the technical field of coal mine dust prevention and control. The device comprises a dust removal breathing machine, a face mask, a wind supply pipe, an intelligent terminal and an integrated body. The face mask is connected with the integrated body through the wind supply pipe, the intelligent terminal is signal connected with the integrated body, the intelligent terminal is configured to collect physiological health parameters and send alarm information, and the integrated body is internally provided with a dust remover, a wind supply adjusting device and a control module. The control module is electrically connected with the dust remover and the wind supply adjusting device, the control module is configured to receive the physiological health parameters collected by the intelligent terminal, and adjust the wind supply amount of the wind supply adjusting device according to the physiological health parameters. The application solves the defects of the existing operation protection equipment and related system in the aspects of dust purification effect, breathing comfort, function integration, risk early warning capability, multi-dimensional data collection and application, and provides all-round protection for the occupational health of coal mine workers.

Description

Technical Field

[0001] This application relates to the field of coal mine dust control technology, and in particular to a portable multi-functional dust removal breathing device and breathing system. Background Technology

[0002] In workplaces with severe dust pollution, such as mining, construction, and chemical production, workers are exposed to respirable dust for extended periods, which can easily lead to respiratory illnesses. Furthermore, the presence of harmful gases and complex working conditions in these environments also pose serious threats to workers' personal safety and occupational health. Therefore, personal protective equipment (PPE) and environmental monitoring systems are crucial for ensuring workplace safety and reducing occupational health risks.

[0003] Currently, existing work protective equipment and related systems still have many shortcomings, making it difficult to meet the needs of comprehensive protection, convenient operation, and scientific management in complex work scenarios. Regarding dust protection, traditional methods mostly use filter-type masks. These masks can only simply intercept dust through a single filter layer, resulting in limited purification efficiency and difficulty in effectively removing respirable dust from the work environment. Furthermore, as the filtration process progresses, the filter layer easily becomes clogged, leading to a significant increase in breathing resistance for workers and extremely poor comfort during long-term wear. This, in turn, affects compliance with protective equipment wearing guidelines and fails to achieve continuous and effective dust protection.

[0004] In terms of functional integration, existing protective equipment often suffers from limited functionality. Dust protection, noise protection, communication, positioning, and health monitoring functions are often independent, requiring workers to wear multiple different devices to meet their needs. This not only increases the workload and operational complexity for workers but may also lead to interference between devices, affecting the normal operation of each function and failing to comprehensively improve the convenience, comfort, and safety of workers. Furthermore, some existing monitoring equipment can only detect single dust concentrations or gas components, lacking multi-channel intelligent early warning mechanisms. Workers struggle to monitor environmental risks in real time, and in the event of a sudden safety accident, there is a lack of rapid emergency call and ground monitoring linkage mechanisms, resulting in low emergency response efficiency and potential delays in rescue efforts.

[0005] In terms of data collection and application, existing systems can only collect single-dimensional environmental or human data, lacking the ability to integrate and collect multi-dimensional information such as dust concentration, gas composition, breathing resistance, and worker health status, thus failing to form comprehensive and systematic data support. The collected data is mostly used for simple real-time display, making it difficult to use for optimizing dust removal solutions or accurately analyzing the dust exposure risk of workers under different working conditions. This results in a lack of scientific data basis for enterprises when formulating occupational health protection plans, hindering personalized and precise occupational health protection management.

[0006] In summary, existing work protective equipment and related systems have significant deficiencies in dust purification, breathing comfort, functional integration, risk warning capabilities, and multi-dimensional data collection and application. They cannot meet the comprehensive protection needs of workers' occupational health and safety in complex work scenarios. There is an urgent need for a new type of work protective equipment and related systems that can solve the above-mentioned technical problems. Summary of the Invention

[0007] In view of this, this application provides a portable multi-functional dust removal breathing device and breathing system to solve the problem that the existing technology cannot meet the comprehensive protection needs of occupational health and safety of workers in complex working scenarios.

[0008] To achieve the above objectives, this application provides the following technical solution: This application provides a portable, multifunctional dust-removing breathing device, comprising: Dust-removing respirator, including mask, air supply duct, smart terminal and integrated body; The mask is connected to the integrated body via the air supply pipe, and the smart terminal is connected to the integrated body via a signal connection. The smart terminal is configured to collect physiological health parameters and issue alarm information. The integrated unit is equipped with a dust collector, an air supply regulating device, and a control module. The control module is electrically connected to the dust collector and the air supply regulating device, respectively. The control module is configured to receive physiological health parameters collected by the smart terminal and adjust the air supply volume of the air supply regulating device according to the physiological health parameters.

[0009] Furthermore, the air supply regulating device includes an air storage chamber, a breathing regulating mechanism, and a pressure relief mechanism; the air storage chamber is connected to the dust collector and the air supply pipe respectively; the breathing regulating mechanism is connected to the air storage chamber and is configured to regulate the gas pressure supplied to the operator for breathing; the pressure relief mechanism is connected to the air storage chamber and is configured to release pressure when the gas in the air storage chamber reaches a preset pressure critical value.

[0010] Furthermore, the dust collector includes a driving wheel, a driven wheel, a filter chamber, and a dust collection box. A filter device is installed in the filter chamber. The dust collector is configured to drive the driven wheel to run through the driving wheel, so that the dust-laden airflow passes through the filter device to separate the dust in the dust-laden airflow. The dust falls into the dust collection box.

[0011] Furthermore, it also includes noise-canceling headphones, an active noise cancellation device, and a radio communication device. The active noise cancellation device and the radio communication device are disposed in the integrated body, and both the active noise cancellation device and the radio communication device are connected to the noise-canceling headphones.

[0012] Furthermore, it also includes a filter element resistance monitoring device, which includes a bidirectional pressure sensor, a resistance calculation unit, and a threshold warning unit; the bidirectional pressure sensor is configured to collect the air pressure values ​​on both sides of the filter element of the mask in real time; the resistance calculation unit is electrically connected to the bidirectional pressure sensor and is configured to calculate the real-time resistance based on the air pressure value; the threshold warning unit is electrically connected to the resistance calculation unit and is configured to push a filter element replacement reminder when the real-time resistance value reaches a preset threshold.

[0013] Furthermore, it also includes a gas monitoring device connected to the dust collector. The gas monitoring device includes a gas concentration sensor, a data transmission module, and an over-limit alarm module. The gas concentration sensor is electrically connected to the data transmission module, and the data transmission module is electrically connected to the over-limit alarm module. The over-limit alarm module is configured to send an alarm signal when the gas concentration exceeds a safe threshold.

[0014] Furthermore, it also includes an airtightness monitoring device, which includes an air pressure pump, a pressure sensor, a timer triggering module, and a pressure relief valve. The air pressure pump is connected to the mask, the pressure sensor is located inside the mask, the timer triggering module is connected to both the air pressure pump and the pressure sensor, and the pressure relief valve is located on the mask.

[0015] Furthermore, it also includes a location-based distress call device, which is wirelessly connected to the smart terminal to send a distress signal through the smart terminal.

[0016] Furthermore, it also includes a dust monitoring and dynamic analysis device, which includes a first dust concentration sensor, a second dust concentration sensor, a signal processing module, and a dust alarm module. The first dust concentration sensor is disposed on the inside of the mask corresponding to the nose area of ​​the human body, and the second dust concentration sensor is disposed at the air inlet of the air supply regulating device. Both the first dust concentration sensor and the second dust concentration sensor are connected to the signal processing module for monitoring and dynamically analyzing dust concentration. The dust alarm module is connected to the signal processing module and is configured to issue an alarm signal when the dust concentration exceeds a preset value.

[0017] This application also provides a respiratory system, comprising: The portable multi-functional dust-removing breathing device described in any one of the claims; A signal transmission device is communicatively connected to the portable multi-functional dust removal breathing device, and the signal transmission device is configured to receive personnel location information, physiological parameter information and dust concentration information transmitted by the portable multi-functional dust removal breathing device; The ground monitoring equipment is communicatively connected to the signal transmission equipment. The ground monitoring equipment is configured to receive personnel location information, physiological parameter information, and dust concentration information from the signal transmission equipment, and to establish a communication connection with the dispatch and command center to assist in rescue decision-making.

[0018] This application has the following advantages: (1) The combination of micro dust collector and positive pressure air supply effectively purifies respirable dust in the working environment and significantly reduces the breathing resistance of workers. The protection strength and comfort are better than traditional filter masks; (2) This application integrates multiple practical functions: dust removal, noise reduction, communication, positioning, health monitoring, and dust concentration monitoring are integrated into one, which comprehensively improves the portability, comfort and safety of workers during operation. In addition, it integrates the function of real-time detection of dust and gas composition, and provides intelligent early warning through multiple channels such as wristbands and headphones, which effectively reduces the risk of work safety. In the event of an emergency, the one-click emergency call function is linked with the ground monitoring to provide rapid response support for emergencies; (3) This application integrates a multi-dimensional information collection system for dust concentration, gas composition, breathing resistance, health status, etc. The collected data can support the decision-making of dust removal schemes, analyze the dust exposure risk under different working conditions, and provide data support for enterprises to formulate occupational health protection plans. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A front view of the portable dust-removing respirator structure provided in an embodiment of this application is shown; Figure 2 A rear view of the structure of the portable dust-removing respirator provided in an embodiment of this application is shown; Figure 3 This application provides a schematic diagram of the structure of a signal transmission device and a ground monitoring device according to an embodiment of the present application. Figure 4 A schematic diagram of the integrated body structure provided in an embodiment of this application is shown; Figure 5 A schematic diagram of signal transmission of a portable multifunctional respiratory system provided in an embodiment of this application is shown; Figure 6A schematic diagram of the micro dust collector structure provided in an embodiment of this application is shown; Figure 7 A front view of the filter cavity provided in an embodiment of this application is shown; Figure 8 A rear view of the filter cavity provided in an embodiment of this application is shown; Figure 9 A schematic diagram of the sealing ring structure provided in an embodiment of this application is shown; Figure 10 A schematic diagram of the fixed mesh structure of the miniature dust collector provided in this embodiment of the present application is shown.

[0020] In the attached image: 100-Face mask; 200-Air supply duct; 300-Intelligent terminal; 400-Integrated body; 401-Dust collector; 4011-Filter chamber; 4012-Explosion-proof motor; 4013-Drive wheel; 4014-Driven wheel; 4015-Anti-collision filter; 4016-Sealing ring; 4017-Fixing net; 402-Air supply regulating device; 403-Control module; 404-Filter element resistance monitoring device; 405-Positioning distress call device; 406-Radio communication device; 407-Active noise reduction device; 408-Dust monitoring and dynamic analysis device; 409-Gas monitoring device; 410-Air tightness monitoring device; 411-Intelligent terminal signal transmission device; 412-Dust storage box; 500-Signal transmission equipment; 600-Ground monitoring equipment. Detailed Implementation

[0021] To make the technical means, creative features, achieved objectives and effects of this application easier to understand, the application is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this application and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this application.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, this application provides a portable multifunctional dust-removing breathing system, comprising: A dust-removing respirator, comprising a mask 100, an air supply duct 200, an intelligent terminal 300, and an integrated body 400; Among them, the mask 100 is connected to the integrated body 400 through the air supply pipe 200, and the smart terminal 300 is connected to the integrated body 400 by signal. The smart terminal 300 is configured to collect physiological health parameters and issue alarm information. The integrated unit 400 is equipped with a dust collector 401, an air supply regulating device 402 and a control module 403. The control module 403 is electrically connected to the dust collector 401 and the air supply regulating device 402 respectively. The control module 403 is configured to receive physiological health parameters collected by the smart terminal 300 and adjust the air supply volume of the air supply regulating device 402 according to the physiological health parameters.

[0023] Specifically, this application provides a portable multi-functional dust-removing breathing apparatus, which aims to provide workers in high-dust-risk environments such as coal mines with a comprehensive solution integrating respiratory protection, health monitoring, and intelligent control. The portable multi-functional dust-removing breathing apparatus includes a dust-removing respirator, which comprises a mask 100, an air supply duct 200, an intelligent terminal 300, and an integrated body 400. The mask 100 is the component that directly contacts the worker's face, and its function is to form a breathing cavity relatively isolated from the external environment. To ensure wearing comfort and airtightness, the mask 100 is preferably made of medical-grade silicone material, and its edges can be equipped with a double-layer sealing ring structure to ensure a tight fit with the worker's face and prevent unfiltered external dust-laden airflow from entering the breathing area. An airflow guide groove can also be designed on the inner side of the mask 100 to guide the clean air delivered by the air supply duct 200 to be evenly distributed around the mouth and nose, avoiding localized airflow impact and improving breathing comfort.

[0024] The face mask 100 is fixedly connected to one end of the air supply duct 200, and the other end of the air supply duct 200 is connected to the integrated unit 400. The air supply duct 200 is made of spiral-reinforced polyurethane (PU) tubing with an inner diameter of approximately 15 mm. This structure ensures both the flexibility of the tubing, allowing it to accommodate the free movement of the operator's head and body, and sufficient pressure resistance, such as withstanding a working pressure of 0.3 MPa, to prevent air supply interruption due to compression or bending during use. In addition, wiring can be integrated inside the air supply duct 200 or along its wall for signal transmission between the components in the face mask 100 area and the integrated unit 400.

[0025] The smart terminal 300 is a terminal device for collecting human physiological health parameters and issuing alarm signals. In this embodiment, it is preferably a wearable smart bracelet. The smart bracelet is configured to connect wirelessly to the integrated unit 400, for example, using Bluetooth wireless signal transmission for pairing and data interaction. During operation, the worker wears the smart bracelet on their wrist. The smart bracelet has multiple built-in biosensors that can monitor various physiological health parameters of the worker in real time and continuously. These physiological health parameters include, but are not limited to, heart rate, blood pressure, blood oxygen saturation, respiratory rate, steps, and energy consumption. A normal human heart rate is 80 beats / min, blood oxygen saturation is 98%, and respiratory rate is 18 breaths / min. Simultaneously, the smart bracelet integrates a vibration motor as the actuator for alarm information. When the smart bracelet receives an alarm command from the integrated unit 400, it immediately activates vibration mode to issue a tactile warning to the wearer. This is a highly effective early warning method for workers in noisy environments.

[0026] The integrated body 400 is the core processing and control unit of the entire dust-removing respirator. The integrated body measures 200×200×80mm, and its outer shell can be made of a composite of flame-retardant plastic and alloy materials, possessing a high IP68 protection rating to adapt to the harsh, humid, and dusty environment underground. Combined with... Figure 4 As shown, the integrated unit 400 integrates key components for realizing the core functions of this application, including a dust collector 401, an air supply regulating device 402, and a control module 403. The control module 403 is electrically connected to both the dust collector 401 and the air supply regulating device 402 to send control commands and receive operational status feedback. The control module 403 is also configured to connect to the smart terminal signal transmission device 411 to receive physiological health parameters collected and sent by the smart bracelet. The control module 403 can adjust the operating status of the air supply regulating device 402 based on changes in the received physiological health parameters. During operation, when the control module 403 analyzes that the worker's respiratory rate and heart rate significantly increase due to increased labor intensity, it determines that their oxygen demand has increased and immediately sends a command to the air supply regulating device 402 to increase its air supply per unit time to meet the worker's physiological needs and ensure smooth breathing. Conversely, when workers are at rest or engaged in low-intensity activities, the air supply can be appropriately reduced to save energy and extend battery life. Through this intelligent adjustment mechanism, this application achieves personalized and dynamic precise respiratory protection for workers, overcoming the shortcomings of traditional protective equipment that provides a constant air supply and cannot adapt to individual differences and changes in working conditions. The specific structure, layout, and collaborative working methods of the various components within the integrated body 400 are also discussed.

[0027] like Figure 4As shown, the air supply regulating device 402 includes an air storage chamber, a breathing regulating mechanism, and a pressure relief mechanism; the air storage chamber is connected to the dust collector 401 and the air supply pipe 200 respectively; the breathing regulating mechanism is connected to the air storage chamber and is configured to regulate the gas pressure supplied to the operator for breathing; the pressure relief mechanism is connected to the air storage chamber and is configured to release pressure when the gas in the air storage chamber reaches a preset pressure critical value.

[0028] Specifically, the air supply regulating device 402 consists of an air storage chamber, a breathing regulating mechanism, and a pressure relief mechanism, ensuring a stable, appropriately flowed, and safe breathing air source for workers. The air storage chamber, located within the integrated unit 400, is a sealed cavity with a volume of 200 mL. Its air inlet is connected to the air outlet of the dust collector 401 via a pipeline, used to receive and temporarily store clean air purified by the dust collector 401. Simultaneously, the air outlet of this storage chamber is connected to the air supply pipe 200, thus forming a continuous airflow path from the air purification end to the personnel's breathing end. The air storage chamber acts as a buffer and pressure stabilizer, reducing airflow pulsation that may occur in the dust collector 401 due to factors such as fan speed fluctuations, making the airflow transmitted to the mask 100 more stable and gentle. The air storage chamber can also serve as a backup air reservoir. When the air supply regulator switches to "emergency mode", the air storage chamber releases the reserved air, increasing the air supply flow rate to 30L / min, ensuring breathing needs during emergency evacuation. The air in the air storage chamber has a runtime of ≥30min.

[0029] The breathing regulation mechanism is connected to the air storage chamber. Based on the operator's actual breathing state or instructions from the control module 403, it dynamically adjusts the gas pressure and / or flow rate supplied to the mask 100 to maintain a positive pressure environment inside the mask 100 and meet the wearer's breathing comfort. In this embodiment, the breathing regulation mechanism can be implemented using a butterfly valve structure driven by a servo motor. The butterfly valve is precisely installed in the air passage between the air storage chamber and the air supply pipe 200. The control module 403 sends a control signal to the servo motor according to a preset algorithm, driving the valve plate of the butterfly valve to rotate to a specific angle, thereby changing the flow cross-sectional area of ​​the air passage to maintain the pressure inside the mask 100 between 50 Pa and 150 Pa. When the operator inhales, the pressure inside the mask decreases, and the control module 403 drives the butterfly valve to increase its opening, providing a larger flow of supplementary air; when the operator exhales, the pressure inside the mask rises, and the butterfly valve correspondingly decreases its opening, or even cooperates with the breathing valve on the mask 100 to expel waste gas. This dynamic balance adjustment not only significantly reduces the breathing resistance of workers, but also establishes a slight positive pressure inside the mask 100 relative to the external environment. This effectively prevents unfiltered dust-laden gases from seeping in through the tiny gaps between the mask and the face, greatly improving the reliability of the protection. The breathing resistance is controlled at <300 Pa.

[0030] The pressure relief mechanism, connected to the air storage chamber, is configured as a passive safety protection device. Its function is to automatically open and relieve pressure when the internal pressure of the system abnormally rises and exceeds a preset safety threshold. If the butterfly valve of the breathing regulation mechanism malfunctions and remains stuck in the closed position, while the dust collector 401 continues to supply air to the air storage chamber, the pressure inside the chamber will rise rapidly. If pressure is not relieved in time, it may lead to pipe rupture or respiratory injury to workers. Specifically, the pressure relief mechanism can be a spring-loaded safety valve. The opening pressure of this safety valve is preset to a safety threshold of 15 kPa. When the gas pressure in the air storage chamber reaches or exceeds this threshold, the gas pressure overcomes the spring preload inside the safety valve, pushing the valve core to open and releasing excess gas through the pressure relief port to the outside atmosphere or the outside of the integrated unit 400, thereby reducing the pressure in the air storage chamber back to a safe range. Once the pressure falls below the threshold, the valve core automatically resets and closes under the action of the spring, ensuring that the pressure of the air supply system remains within a safe and controllable range. The above structural design, the air supply regulating device 402 consists of an air storage chamber, a breathing regulating mechanism and a pressure relief mechanism, which together form an intelligent air supply subsystem that integrates flow stabilization, pressure regulation and safety, realizing the core positive pressure air supply function of the portable multi-energy dust removal breathing system.

[0031] like Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the dust collector 401 includes a driving wheel 4013, a driven wheel 4014, a filter chamber 4011, and a dust collection box 412. The filter chamber 4011 is equipped with a filter device. The dust collector 401 is configured to drive the driven wheel 4014 through the driving wheel 4013, so that the dust-laden airflow passes through the filter device to separate the dust in the dust-laden airflow. The dust falls into the dust collection box 412.

[0032] Specifically, dust collector 401 is a high-efficiency miniature dust collector with automatic dust removal function, designed to effectively handle high concentrations of respirable dust in the working environment while ensuring low breathing resistance and a long maintenance cycle. Dust collector 401 includes an explosion-proof body, an explosion-proof motor 4012, a drive wheel 4013, a driven wheel 4014, a filter chamber 4011, and a dust collection box 412. The explosion-proof body is the outer shell of dust collector 401, made of explosion-proof materials that meet mining safety standards to eliminate the risk of electric sparks or ignition by hot surfaces in environments containing flammable gases such as methane. An anti-collision filter 4015 is installed at the air inlet of the explosion-proof body. Its main function is to initially intercept larger particles, splashing rock fragments, or coal chunks that may be present in the working environment, preventing them from causing physical damage to the internal fan blades and filter components, thus acting as a coarse filter and protective barrier.

[0033] An explosion-proof motor 4012 is installed inside the dust collector 401. The rated voltage of the explosion-proof motor is 12V, and the power is 15W. A drive wheel 4013 is fixedly installed on the output shaft of the explosion-proof motor 4012. When the explosion-proof motor 4012 is running, it drives the drive wheel 4013 to rotate at high speed. The rotation of the drive wheel 4013 drives the driven wheel 4014 to achieve linkage. The purpose of the drive wheel 4013 driving the driven wheel 4014 is not only to provide the negative pressure power required to draw in the dust-laden airflow, but more importantly, to generate secondary air turbulence at the front end of the filter chamber 4011. This turbulence effect generated by the dual-wheel structure enables the inhaled dust-laden airflow to form a more complex turbulent state before entering the filter chamber 4011, promoting more thorough and uniform contact between the dust particles in the airflow and the filter device, thereby effectively improving the dust collection efficiency and avoiding the problem of decreased purification efficiency caused by airflow short circuits or local filter layer overload.

[0034] The 4011 filter chamber adopts a split design. For example... Figure 6 , Figure 7 and Figure 8 As shown, a filtration device is installed inside the filter chamber 4011, consisting of a sealing ring 4016 and a fixing mesh 4017. The fixing mesh 4017 is an openable structure, consisting of two semi-circular metal mesh pieces connected by a hinge and locked with a snap-fit ​​mechanism. In use, the operator can easily open the fixing mesh 4017, place the pre-prepared circular filter element inside, and then close and lock the fixing mesh 4017. The circular filter element is a filter cartridge made of polypropylene fiber filter media or PTFE filter cartridge. Next, the fixing mesh 4017 containing the filter element is placed entirely inside the filter chamber 4011, and the sealing ring 4016 forms a reliable seal between the fixing mesh 4017 and the inner wall of the filter chamber 4011, ensuring that all dust-laden airflow must pass through the filter layer of the filter element. When the dust-laden airflow enters the filter chamber 4011 and passes through the filter element under the action of the driving wheel 4013 and the driven wheel 4014, the dust particles in the airflow are intercepted and adsorbed on the surface of the filter element, while the clean air passes through the filter element and is discharged from the air outlet of the filter chamber 4011, flowing to the next-level air supply regulating device 402.

[0035] The dust collection box 412 is connected to the filter chamber 4011. Using the airflow generated by the operation of the dust collector 401, or through a dedicated automatic dust removal mechanism, the dust adhering to the surface of the filter element is peeled off and falls into the dust collection box 412 below. In this embodiment, the automatic dust removal mechanism is a micro-vibration motor driving an eccentric wheel to beat the filter cylinder. The function of the dust collection box 412 is to temporarily store the separated dust. After the operator completes a shift, the residual pressure of the air supply regulating device 402 can be used to backflush the airflow, conveniently discharging the dust accumulated in the dust collection box 412 into an external collection bag for centralized processing, thus completing the cleaning of the dust collector 401. This modular filter chamber 4011 setup and portable dust storage and discharge method make filter element replacement and daily equipment maintenance extremely simple and quick, requiring no special tools and can be completed on-site underground, greatly improving equipment availability and operational efficiency.

[0036] like Figure 1 and Figure 4 As shown, it also includes noise-canceling headphones, an active noise cancellation device 407, and a radio communication device 406. The active noise cancellation device 407 and the radio communication device 406 are disposed within the integrated body 400, and both the active noise cancellation device 407 and the radio communication device 406 are connected to the noise-canceling headphones.

[0037] Specifically, the portable multi-functional dust-removing breathing equipment also includes noise-canceling headphones, an active noise-canceling device 407, and a radio communication device 406. This structural design aims to solve the dual challenges of personnel protection and communication in high-noise environments such as coal mines. The noise-canceling headphones, as an audio output terminal, are typically designed as over-ear or ear-hook headphones worn on the worker's ears. The noise-canceling headphones are not merely simple sound-generating units; they integrate a speaker unit and a reference microphone for collecting ambient noise. The control circuitry of the noise-canceling headphones is introduced into the air supply duct 200 from the integrated body 400. The microphone of the noise-canceling headphones is built into the mask 100, and the wiring ends out from the mask 100, connecting to the left and right earpieces. This integrated wiring design avoids the cumbersome and potentially safe arrangement of multiple independent cables around the worker's neck, improving the ease and comfort of wearing the device.

[0038] The active noise cancellation device 407 is housed within the integrated unit 400. It includes a noise acquisition module, a noise cancellation chip, and a noise-reflecting speaker. The noise acquisition module typically consists of one or more miniature microphones configured to monitor the ambient noise around the worker's ears in real time. The module converts the acquired ambient noise signal into an electrical signal and transmits it to the noise cancellation chip in real time. The noise cancellation chip is the core of the active noise cancellation device 407 and can employ a professional audio digital signal processor chip, such as those from Analog Devices (ADI), which incorporates the ANC algorithm. Upon receiving the noise signal, the chip performs high-speed real-time analysis and processing, generating an anti-phase noise signal that is out of phase with the external noise wave. This anti-phase noise signal is amplified by a power amplifier circuit and ultimately drives the noise-reflecting speaker inside the noise-canceling headphones to emit an anti-phase sound wave. Based on the physical principle of destructive interference, when the anti-phase sound wave encounters the original external noise wave within the ear canal or near the auricle, they cancel each other out or significantly weaken, thus significantly reducing the perceived noise level for the worker. Specifically, the active noise cancellation device 407 cancels 80% of the noise through noise-canceling headphones, reducing the noise level to below 85 decibels. In this embodiment, the noise cancellation frequency band covers 100Hz~8kHz, with a maximum noise reduction of 30dB. It effectively reduces noise in the main industrial noise frequency bands, lowering high-decibel environmental noise exceeding occupational health standards to a level relatively safe for hearing, effectively protecting the hearing health of workers.

[0039] To address the issue of impaired verbal communication in high-noise environments, especially when wearing sealed face masks 100, a radio communication device 406 is integrated within the integrated unit 400. The radio communication device 406 shares noise-canceling headphones as the audio output and input terminal with the active noise cancellation device 407. The radio communication device 406 includes a signal transmitting module, a signal receiving module, a modulation / demodulation circuit, and a signaling processing module to enable real-time communication between personnel in the mining work team. A miniature microphone is installed on the inside of the face mask 100, near the wearer's mouth. When a worker speaks, the microphone picks up the voice signal and converts it into an electrical signal. This electrical signal is transmitted to the radio communication device 406 via a signal transmission line within the ventilation duct 200. Inside the communication device 406, the signaling processing module amplifies and filters the voice signal before the modulation / demodulation circuit and signal transmitting module modulate it and load it onto a specific radio frequency, which is then transmitted through an antenna. The radio frequency uses the XHF / UHF band commonly used in digital or analog walkie-talkies. When the signal receiving module of the communication device 406 of other personnel on the same communication channel receives the radio signal, it is demodulated by the modulation and demodulation circuit to restore the voice signal. The voice signal is superimposed with the inverse noise signal from the active noise cancellation device 407 in the mixing circuit, and then jointly drives the speaker of the noise-canceling headphones. In this way, the workers will hear clear voice communication above the significantly reduced environmental background noise, thus achieving the effect of "dual synchronization of environmental noise reduction and real-time communication". The radio communication device 406 can be designed to enable direct two-way communication between team members within a 100-meter range without the need for any pre-set base station network support, ensuring communication reliability under any working conditions. The radio communication device 406 switches to the "disaster frequency band" to avoid interference signals, enabling one-way communication between personnel evacuation and rescue command groups. The rescue group can send instructions, and personnel can provide feedback on their status through preset buttons.

[0040] like Figure 4 As shown, it also includes a filter element resistance monitoring device 404, which includes a bidirectional pressure sensor, a resistance calculation unit, and a threshold warning unit. The bidirectional pressure sensor is configured to collect the air pressure values ​​on both sides of the filter element of the mask 100 in real time. The resistance calculation unit is electrically connected to the bidirectional pressure sensor and is configured to calculate the real-time resistance based on the air pressure value. The threshold warning unit is electrically connected to the resistance calculation unit and is used to push a filter element replacement reminder when the real-time resistance value reaches a preset threshold.

[0041] Specifically, the filter resistance monitoring device 404 addresses the technical problems of traditional respiratory protective equipment, such as excessive breathing resistance, poor wearing comfort, and decreased filtration efficiency after excessive filter use, caused by the inability to accurately determine the degree of filter blockage. The filter resistance monitoring device 404 achieves intelligent management of the filter's health status through the coordinated operation of sophisticated sensing, calculation, and early warning mechanisms. The filter resistance monitoring device 404 includes a bidirectional pressure sensor, a resistance calculation unit, and a threshold early warning unit. The bidirectional pressure sensor is the fundamental sensing element for monitoring filter resistance, capable of collecting air pressure values ​​on both sides of the filter of the face mask 100 in real time and synchronously. In some embodiments, two independent bidirectional air pressure sensor interfaces can be provided: one connected to the air inlet side of the filter chamber 4011 via a pressure-sensing tube, corresponding to the area between the air inlet of the dust collector 401 and the dust-facing surface of the filter; the other connected to the air outlet side of the filter chamber 4011 via a pressure-sensing tube, corresponding to the area between the clean surface of the filter and the air inlet of the air supply regulating device 402. Two sensors respectively collect air pressure values ​​at corresponding locations and convert the air pressure physical quantity into electrical signals that can be processed by subsequent circuitry. In some embodiments, the bidirectional pressure sensor is preferably a differential pressure sensor, which has a high-pressure port and a low-pressure port, connected to the inlet and outlet sides of the filter element respectively. The internal sensing diaphragm can sense the differential signal output from the inlet side. The bidirectional pressure sensor can continuously convert the air pressure values ​​on both sides of the filter element into electrical signals and transmit them in real time to the resistance calculation unit connected to the bidirectional pressure sensor.

[0042] The resistance calculation unit is an independent microcontroller capable of data processing, located within the control module 403. Electrically connected to a bidirectional pressure sensor via an output interface, it continuously receives electrical signals of the air pressure values ​​on the filter's inlet and outlet sides. Its internal algorithm processes these received pressure values ​​in real time to calculate the real-time filtration resistance. The calculation method involves subtracting the outlet pressure from the inlet pressure; the resulting difference, ΔP, represents the resistance overcome by the gas flowing through the filter at that moment. The filter resistance monitoring device prevents insufficient airflow from the mask due to dust accumulation and blockage. The resistance calculation unit filters the ΔP value to eliminate instantaneous fluctuations caused by factors such as fan airflow pulsation, resulting in a stable real-time resistance value. This real-time resistance value directly reflects the degree of decrease in gas permeability caused by dust blockage.

[0043] The threshold warning unit is electrically connected to the output of the resistance calculation unit. The resistance calculation unit has a resistance threshold, which is set based on a comprehensive consideration of human respiratory physiology and equipment performance. When the filter resistance > 300Pa, the wearer will clearly feel difficulty breathing. The threshold warning unit continuously compares the real-time resistance value from the resistance calculation unit with the preset threshold. When the detected real-time resistance value exceeds the preset threshold, the threshold warning unit triggers a warning signal, which is then pushed to the noise-canceling headphones and smart terminal 300 to remind the user to replace the filter. The warning signal can also be transmitted to the control module 403, where a preset voice prompt is played through the noise-canceling headphones. The warning signal can also be transmitted to the ground monitoring device 600 via the signal transmission device 500, where the ground monitoring device 600 monitors the filter's lifespan, ensuring that operators always work in a state of low breathing resistance and high filtration efficiency.

[0044] like Figure 4 As shown, it also includes a gas monitoring device 409, which is connected to the dust collector 401. The gas monitoring device 409 includes a gas concentration sensor, a data transmission module, and an over-limit alarm module. The gas concentration sensor is electrically connected to the data transmission module, and the data transmission module is electrically connected to the alarm module. The alarm module is configured to send an alarm signal when the gas concentration exceeds the safety threshold.

[0045] Specifically, the gas monitoring device 409 is used for real-time detection and early warning of toxic and harmful gases that may be present in the working environment. The gas monitoring device 409 is connected to the dust collector 401 and includes a gas concentration sensor, a data transmission module, and an over-limit alarm module.

[0046] A gas concentration sensor is installed at the outlet of dust collector 401 for real-time monitoring of gas concentration. The air filtered by dust collector 401 removes most particulate matter, allowing the gas sensor to operate in a relatively clean airflow environment. This effectively avoids the problems of decreased sensitivity, slow response, or even permanent damage caused by dust accumulation on the sensor surface, extending the sensor's lifespan and calibration cycle. The airflow at the outlet of dust collector 401 is actively driven by a fan, ensuring a relatively stable gas velocity and guaranteeing sufficient and rapid contact between the sensor and the gas to be measured, thereby obtaining accurate real-time concentration readings. The gas concentration sensor can be selected and configured according to the type of gas to be monitored, including carbon monoxide, hydrogen sulfide, methane, and nitrogen oxides. High-selectivity, high-sensitivity electrochemical sensors can be used for monitoring carbon monoxide and hydrogen sulfide; non-dispersive infrared sensors are used for methane monitoring, utilizing the characteristic absorption peaks in the infrared band.

[0047] The data transmission module is electrically connected to the signal output terminal of the gas concentration sensor. It receives and processes the electrical signals from the gas concentration sensor, pre-amplifies weak signals, filters out high-frequency noise using a low-pass filter, and performs analog-to-digital conversion, transforming the analog voltage signal into digital concentration data. The gas concentration sensor monitors the gas concentration in real time and transmits the data to the ground monitoring host in real time. The data transmission module integrates the data through the control module 403 and transmits it to the ground monitoring equipment 600 via the signal transmission device 500 for centralized display and recording.

[0048] The over-limit alarm module is electrically connected to the data transmission module. The over-limit alarm module pre-stores safety thresholds for different types of gases, with the thresholds strictly adhering to national standards and industry specifications such as the "Coal Mine Safety Regulations." An alarm is triggered when carbon monoxide concentration > 24 ppm or hydrogen sulfide concentration > 0.00066%. When the gas concentration exceeds the safety threshold, the over-limit alarm module is triggered, simultaneously sending alarm information to the smart bracelet, noise-canceling headphones, and ground monitoring equipment 600. The noise-canceling headphones play a buzzer or voice warning, and the smart terminal signal transmission device 411 drives the smart terminal 300 to emit a specific mode of vibration alarm, illuminating the alarm indicator light on the integrated unit 400. The alarm signal is transmitted to the ground monitoring equipment 600 via the signal transmission device 500, ensuring that both underground workers and surface personnel can detect danger immediately.

[0049] like Figure 4 As shown, the portable multi-functional dust removal breathing device also includes an air tightness monitoring device 410. The air tightness monitoring device 410 includes an air pressure pump, a pressure sensor, a timer trigger module and a pressure relief valve. The air pressure pump is connected to the mask 100, the pressure sensor is set inside the mask 100, the timer trigger module is connected to the air pressure pump and the pressure sensor respectively, and the pressure relief valve is set on the mask 100.

[0050] Specifically, the portable multi-functional dust-removing breathing apparatus also includes an airtightness monitoring device 410, integrated inside the integrated body 400, to solve the problems of unreliability and inconvenience of manual airtightness inspection in an automated manner. The airtightness monitoring device 410 includes an air pressure pump, a pressure sensor, a timer trigger module, and a pressure relief valve.

[0051] The air pump is connected to the interior of the mask 100, and its outlet is connected to the internal cavity of the mask 100 via a dedicated gas pipeline. To avoid interfering with normal breathing, this pipeline is closed by a normally closed solenoid valve when not under monitoring. When the airtightness monitoring program is activated, the solenoid valve opens, the air pump starts operating, and pumps gas into the mask 100, increasing the pressure inside the mask 100 cavity. A pressure sensor is located inside the mask 100, preferably embedded in the silicone shell of the mask 100, with its sensing surface exposed to the gas inside the mask 100 cavity. The pressure sensor converts the sensed gas pressure value into a precise electrical signal and transmits it to the control module 403 or the monitoring control unit in real time. During automatic airtightness monitoring, the miniature air pump pressurizes the mask 100, stabilizing the pressure inside the mask 100 cavity at the detection set value. The air pump is then turned off, and the pressure decay rate is monitored by the pressure sensor. The timed trigger module is connected to both the pressure pump and the pressure sensor. The timed trigger module is integrated into the control module 403. The airtightness monitoring device 410 is linked to the control module 403. When the operator wears the mask 100 and starts the equipment, the airtightness detection action of the mask 100 is triggered at a set time. The timed trigger module is configured to automatically initiate airtightness detection according to preset conditions or time intervals.

[0052] A pressure relief valve is installed on the mask 100. After testing, the additional pressure inside the mask 100 cavity is quickly released by opening the valve, restoring normal positive pressure breathing. When an airtightness failure is detected, the airtightness detection device 410 immediately sends a signal to the control module 403, triggering a triple warning, including: a noise-canceling headset playing a "mask airtightness abnormality" voice prompt, a smart bracelet continuously vibrating to remind the user, and a flashing red indicator light on the integrated body surface. This design ensures that operators can promptly be aware of airtightness abnormalities and readjust the mask wearing position.

[0053] like Figure 1 and Figure 4 As shown, the portable multi-functional dust removal breathing device also includes a positioning and distress call device 405, which is wirelessly connected to the smart terminal 300 to send distress signals through the smart terminal 300.

[0054] Specifically, the location-based distress call device 405 is built into the integrated unit 400 and wirelessly connected to the smart terminal 300. In the underground working environment, in the event of a sudden disaster or personal illness, the worker can quickly and accurately send a distress signal containing precise information. During operations, if a worker experiences a sudden outburst underground, a distress signal can be sent with a single button press via the smart terminal 300. The smart terminal 300 has an "SOS" button on its casing, which is waterproof and requires continuous pressing for 3 seconds to trigger the SOS distress signal. Upon receiving the distress signal from the smart terminal 300, the location-based distress call device 405 immediately activates and enters emergency working mode. The location-based distress call device 405 integrates a UWB positioning module, which wirelessly transmits signals to the signal transmission device 500. The distress signal includes location information, gas concentration, and heart rate. The distress signal is urgently sent to the ground monitoring device 600 through the signal transmission device 500. It arrives at the ground monitoring device 600 within 10 seconds. The ground monitoring device 600 automatically alarms and connects to the dispatch and command center to display historical data of personnel trajectory and plan evacuation routes to assist in rescue decision-making.

[0055] like Figure 4 As shown, it also includes a dust monitoring and dynamic analysis device 408, which includes a first dust concentration sensor, a second dust concentration sensor, a signal processing module, and a dust alarm module. The first dust concentration sensor is located inside the mask 100 corresponding to the nose area of ​​the human body, and the second dust concentration sensor is located at the air inlet of the air supply regulating device 402. Both the first and second dust concentration sensors are connected to the signal processing module for monitoring and dynamic analysis of dust concentration. The dust alarm module is connected to the signal processing module and is configured to issue an alarm signal when the dust concentration exceeds a preset value.

[0056] Specifically, a first dust concentration sensor is located inside the face mask 100, corresponding to the nose area of ​​the human body. This first dust concentration sensor is an infrared dust sensor used to detect the concentration of purified dust inside the face mask in real time. A second dust concentration sensor is located at the air inlet of the air supply regulating device 402. This second dust concentration sensor is used to monitor the ambient dust concentration of the operator. Both the first and second dust concentration sensors use laser scattering dust sensors for sampling. Both the first and second dust concentration sensors are connected to a signal processing module. The signal processing module collects, amplifies, filters, and performs analog-to-digital conversion on the dust concentration signal. Based on the characteristic curve calibrated at the sensor's factory, it converts the dust concentration signal into a vertical dust concentration curve. The signal processing module outputs the ambient dust concentration and the purified dust concentration at the nose in real time. The signal processing module is connected to the main control circuit and sends real-time dust monitoring data to the signal transmission base station. The ground monitoring equipment 600 dynamically analyzes the dust removal rate, the cumulative filtered dust volume, and the amount of respirable dust inhaled. The dust alarm module is connected to the signal transmission module. The dust alarm module is configured to trigger when the dust concentration at the nose exceeds the limit or the dust removal rate falls below a set threshold. The preferred dust threshold is 10 mg / m³. 3 The raw data and analysis results received by the signal transmission module are transmitted to the ground monitoring equipment 600 through the signal transmission device 500, providing data support for managers to optimize ventilation and dust removal plans and evaluate the effectiveness of individual protective equipment.

[0057] like Figure 3 and Figure 5 As shown, this application also provides a respiratory system, comprising: Portable multi-functional dust removal breathing device; The signal transmission device 500 is communicatively connected to the portable multi-functional dust removal breathing device. The signal transmission device 500 is configured to receive personnel location information, physiological parameter information and dust concentration information transmitted by the portable multi-functional dust removal breathing device. Ground monitoring equipment 600 is communicatively connected to signal transmission equipment 500. Ground monitoring equipment 600 is configured to receive personnel location information, physiological parameter information and dust concentration information from signal transmission equipment 500, and establish a communication connection with the dispatch and command center to assist in rescue decision-making.

[0058] Specifically, the signal transmission device 500 includes multiple signal transmission base stations, which are deployed along the underground roadways based on wireless communication technology. These base stations form a wireless communication network through wireless transmission, enabling relay transmission of ventilator data and providing regional positioning reference points. The signal transmission distance is greater than 2000m, with a base station set every 2000m within the underground roadways. Signals emitted by the portable multi-functional dust-removing breathing apparatus are transmitted to the ground monitoring device 600 via relay transmission. Each base station has wireless signal collection and transmission capabilities, capable of receiving various signals emitted by dust-removing breathing apparatus carried by all personnel within its coverage area. When a base station receives data, it forwards it to the next adjacent base station, and the data is transmitted step-by-step along the relay transmission link until it reaches the final base station capable of establishing a stable signal connection with the ground. Each signal transmission base station has a positioning reference module, which stores the precise location information of the signal transmission base station in the underground coordinate system. When the portable multi-functional dust-removing breathing apparatus communicates with the signal transmission base station, the current precise underground location of the worker wearing the breathing apparatus can be calculated by combining the known location of the signal transmission base station, providing a solution for personnel positioning and trajectory tracking. The signal transmission base station is configured to receive personnel location information, physiological parameter information, and dust concentration information transmitted by the portable multi-functional dust-removing breathing apparatus.

[0059] The ground monitoring device 600 communicates with the signal transmission base station and is deployed in the dispatch and command center or other monitoring room on the mine surface. The ground monitoring device 600 includes a server, a large monitoring screen, and an operating terminal. The ground monitoring device 600 is configured to receive personnel location information, physiological parameter information, and dust concentration information from the signal transmission device 500. It monitors information such as individual location trajectories, health status, dust concentration in the working environment, and nasal dust concentration of workers, displaying real-time data on underground personnel and the environment. Specifically, the ground monitoring device 600 can present the received information in a graphical and chart-like intuitive manner, including real-time display of the location trajectory of workers wearing the system's breathing equipment based on an underground map, displaying changes in workers' physiological parameters in the form of trend graphs, generating dust concentration heat maps and spatiotemporal curves of dual-end dust concentration for different working areas, and calculating the cumulative inhalation of individual respirable dust. The dust concentration heat maps of different working areas can assist managers in optimizing area dust control measures. The ground monitoring device 600 is also configured to establish a communication connection with the dispatch and command center to assist in rescue decision-making. It triggers an alarm when an individual sends a distress signal, returns an escape route based on the individual's real-time location, and automatically connects to the dispatch and command center. When an underground worker triggers a one-button distress call via the smart terminal 300, the distress signal is rapidly transmitted to the ground monitoring device 600 via the signal transmission device 500. Upon receiving the distress signal, the ground monitoring device 600 triggers an alarm, recommends an escape route based on the distressed person's location and historical movement trajectory, and simultaneously establishes a communication connection with the dispatch and command center. This allows ground commanders to issue instructions to the affected area immediately and maintain real-time communication with the rescue team, forming a networked and intelligent occupational health and safety management system.

[0060] As an alternative implementation, a breathing system may retain only the portable multi-functional dust-removing breathing device, eliminating the signal transmission device 500 and the ground monitoring device 600. The portable multi-functional dust-removing breathing device includes a dust collector 401, an air supply regulating device 402, a control module 403, a filter resistance monitoring device 404, an active noise reduction device 407, a radio communication device 406, a gas monitoring device 409, a dust monitoring and dynamic analysis device 408, and a positioning and distress call device 405. Positive pressure ventilation is achieved through a dust collector 401 and an air supply regulating device 402 for breathing protection; an active noise reduction device 407 and a radio communication device 406 enable environmental noise reduction and real-time voice communication within the work group; a gas monitoring device 409 and a dust monitoring and dynamic analysis device 408 monitor the concentration of hazardous substances in the environment in real time, and issue alarms through vibration of the intelligent terminal 300, voice broadcast through noise-canceling headphones, and flashing of indicator lights on the integrated body 400 when limits are exceeded; a location-based distress signal device 405 sends out a wireless distress signal in emergencies to achieve emergency communication within a limited range; and a filter resistance monitoring device 404 prompts replacement through a local alarm when the filter resistance exceeds a threshold. This design is suitable for work areas without deployed signal transmission networks or temporary, mobile work scenarios, reducing system deployment costs and complexity.

[0061] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0062] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A portable, multifunctional dust-removing breathing device, characterized in that, include: Dust-removing respirator, including mask, air supply duct, smart terminal and integrated body; The mask is connected to the integrated body via the air supply pipe, and the smart terminal is connected to the integrated body via a signal connection. The smart terminal is configured to collect physiological health parameters and issue alarm information. The integrated unit is equipped with a dust collector, an air supply regulating device, and a control module. The control module is electrically connected to the dust collector and the air supply regulating device, respectively. The control module is configured to receive physiological health parameters collected by the smart terminal and adjust the air supply volume of the air supply regulating device according to the physiological health parameters.

2. The portable multifunctional dust removal breathing device according to claim 1, characterized in that, The air supply regulating device includes an air storage chamber, a breathing regulating mechanism, and a pressure relief mechanism; the air storage chamber is connected to the dust collector and the air supply pipe respectively; the breathing regulating mechanism is connected to the air storage chamber and is configured to regulate the gas pressure supplied to the operator for breathing; the pressure relief mechanism is connected to the air storage chamber and is configured to release pressure when the gas in the air storage chamber reaches a preset pressure critical value.

3. The portable multifunctional dust-removing breathing device according to claim 1, characterized in that, The dust collector includes a driving wheel, a driven wheel, a filter chamber, and a dust collection box. A filter device is installed in the filter chamber. The dust collector is configured to drive the driven wheel through the driving wheel, so that the dust-laden airflow passes through the filter device to separate the dust in the dust-laden airflow. The dust falls into the dust collection box.

4. A portable multifunctional dust-removing breathing device according to claim 1, characterized in that, It also includes noise-canceling headphones, an active noise cancellation device, and a radio communication device. The active noise cancellation device and the radio communication device are disposed in the integrated body, and both the active noise cancellation device and the radio communication device are connected to the noise-canceling headphones.

5. A portable multifunctional dust-removing breathing device according to claim 1, characterized in that, It also includes a filter resistance monitoring device, which comprises a bidirectional pressure sensor, a resistance calculation unit, and a threshold warning unit. The bidirectional pressure sensor is configured to collect the air pressure values ​​on both sides of the filter of the mask in real time. The resistance calculation unit is electrically connected to the bidirectional pressure sensor and is configured to calculate the real-time resistance based on the air pressure value. The threshold warning unit is electrically connected to the resistance calculation unit and is configured to push a filter replacement reminder when the real-time resistance value reaches a preset threshold.

6. A portable multifunctional dust-removing breathing device according to claim 1, characterized in that, It also includes a gas monitoring device connected to the dust collector. The gas monitoring device includes a gas concentration sensor, a data transmission module, and an over-limit alarm module. The gas concentration sensor is electrically connected to the data transmission module, and the data transmission module is electrically connected to the over-limit alarm module. The over-limit alarm module is configured to send an alarm signal when the gas concentration exceeds a safe threshold.

7. A portable multifunctional dust-removing breathing device according to claim 1, characterized in that, It also includes an airtightness monitoring device, which includes an air pressure pump, a pressure sensor, a timer trigger module and a pressure relief valve. The air pressure pump is connected to the mask, the pressure sensor is located inside the mask, the timer trigger module is connected to the air pressure pump and the pressure sensor respectively, and the pressure relief valve is located on the mask.

8. A portable multifunctional dust-removing breathing device according to claim 1, characterized in that, It also includes a location-based distress call device, which is wirelessly connected to the smart terminal to send distress signals through the smart terminal.

9. A portable multifunctional dust-removing breathing device according to claim 2, characterized in that, It also includes a dust monitoring and dynamic analysis device, which includes a first dust concentration sensor, a second dust concentration sensor, a signal processing module, and a dust alarm module. The first dust concentration sensor is located inside the mask corresponding to the nose area of ​​the human body, and the second dust concentration sensor is located at the air inlet of the air supply regulating device. Both the first and second dust concentration sensors are connected to the signal processing module for monitoring and dynamically analyzing dust concentration. The dust alarm module is connected to the signal processing module and is configured to issue an alarm signal when the dust concentration exceeds a preset value.

10. A respiratory system, characterized in that, include: The portable multi-functional dust-removing breathing device as described in any one of claims 1 to 9; A signal transmission device is communicatively connected to the portable multi-functional dust removal breathing device, and the signal transmission device is configured to receive personnel location information, physiological parameter information and dust concentration information transmitted by the portable multi-functional dust removal breathing device; The ground monitoring equipment is communicatively connected to the signal transmission equipment. The ground monitoring equipment is configured to receive personnel location information, physiological parameter information, and dust concentration information from the signal transmission equipment, and to establish a communication connection with the dispatch and command center to assist in rescue decision-making.

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