Intelligent respirator system for gas mask and operation method

Abstract

The intelligent respirator system comprises a respirator body, the respirator body is of a flat single-tank filtering piece structure provided with straps, a filtering piece connector and a fan connector are arranged on the front face of the respirator body side by side from top to bottom, the filtering piece connector is in threaded connection with a filtering piece, and the fan connector is in threaded connection with the filtering piece. The fan interface is connected with a ventilation system, a communication system is arranged on the back face of the respirator body, a control system is arranged on the back face of the ventilation system, the ventilation system is connected with a mask interface of the gas mask through a corrugated pipe, and an air pressure monitoring module is arranged in the gas mask water blocking cover. The respirator can be automatically adjusted to filter and supply air to the gas mask, whether the current environment is suitable for the working mode of the respirator or not can be pre-warned, the environment use safety of the respirator is ensured, meanwhile, the high-altitude air rarefaction environment can be automatically recognized, the high-altitude environment breathing requirement of personnel is met, and the use safety of operators is effectively ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of breathing assistance for gas masks, and in particular to an intelligent respirator system and an operating method for gas masks. Background Art

[0002] Due to the large breathing resistance of self-priming gas masks, at present, the main way to improve the breathing comfort of gas masks is to use electric blowers to filter and supply air to the gas masks. However, the blowers on the market basically use a fixed air volume supply mode, which cannot follow the breathing rhythm of the operators, and cannot reduce the air volume or stop the fan supply when exhaling. The air volume required for different work intensities when inhaling is different, and it is difficult to fundamentally solve the problems of excessive breathing resistance and breathing comfort; at the same time, in the filtering air supply working mode, the current blowers on the market cannot monitor the working environment and warn the working mode of the respirator, and it is difficult to judge whether the current contaminated environment is suitable for the filtering air supply working mode of the blower. In the case of too low oxygen concentration and other situations where the blower is not suitable, if the blower is rashly used to filter and supply air to the gas mask, it will seriously endanger the life safety of the operators. At the same time, when using a gas mask in a high-altitude thin air environment, it is necessary to quickly identify the high-altitude environment and promptly increase the respirator air supply to meet the breathing needs of the personnel in the high-altitude environment. The existing blowers are difficult to meet the actual use needs.

[0003] Comparative document CN109603024A discloses an automatically adjustable positive pressure powered air supply gas mask and its control system, and the protected claim is: "It includes a breathing mask and a powered air supply respirator, and the air inlet end of the breathing mask is connected to the air supply end of the powered air supply respirator through an air supply pipe. The user of the present invention does not need to mechanically adjust the air volume, and the comfort of breathing and the convenience of use can be solved; it is convenient to detect the temperature and humidity of the surrounding environment, and the content of toxic gases, and display them on a liquid crystal screen; an integrated voice communication system is used to communicate with nearby teammates and a remote command center; it can monitor in real time whether the filtering function of the respirator filter device is working normally, and avoid physical harm caused by failure of the filtering device. It has a clever structure, a novel design, and good application prospects. "The main problems it solves are to intelligently adjust the air volume in the gas mask, detect the temperature and humidity of the surrounding environment, the content of toxic gases, conduct voice communication, and monitor in real time whether the filtering function of the respirator filter device is working normally. However, it cannot identify the thin air environment at high altitudes and meet the breathing needs of personnel in high altitude environments.

[0004] Therefore, there is an urgent need for an intelligent respirator system and an operating method for a gas mask to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an intelligent respirator system and an operating method for a gas mask to solve the problems raised in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an intelligent respirator system for a gas mask, comprising a respirator body, the respirator body is a flat single-tank filter structure with a shoulder strap, a filter interface and a fan interface are arranged in parallel from top to bottom on the front of the respirator body, the filter interface is connected to the filter by a thread, the fan interface is connected to the ventilation system, a communication system is arranged on the back of the respirator body, a control system is arranged on the back of the ventilation system, the ventilation system is connected to the mask interface of the gas mask through a bellows, and an air pressure monitoring module is arranged in the water-blocking hood of the gas mask.

[0007] Preferably, the ventilation system includes a fan cavity, a fan is arranged in the fan cavity, an air exhaust port is arranged on the front of the fan cavity, an air outlet is arranged on the side of the fan cavity, the air exhaust port is connected to the fan interface, the air outlet is connected to the fan connector, the fan connector is connected to one end of the bellows, and the fan cavity is an airtight cavity.

[0008] Preferably, the communication system comprises a communication module cavity, a communication module mainboard is arranged inside the communication module cavity, a first battery compartment is arranged on the side of the communication module cavity, and an antenna installation cavity is arranged on the front of the communication module cavity.

[0009] Preferably, an antenna is installed inside the antenna installation cavity, a first battery is provided in the first battery compartment, the communication module mainboard antenna interface is electrically connected to the antenna, and the first battery is electrically connected to the communication module mainboard power interface.

[0010] Preferably, the communication module mainboard contains a voltage-stabilized power supply module, a Bluetooth module, a WiFi module, a radio frequency module, a processor module, and an antenna interface, and the voltage-stabilized power supply module, the Bluetooth module, the WiFi module, and the radio frequency module are electrically connected to the processor module respectively.

[0011] Preferably, the control system includes a control cavity, a sealing ring is provided at the connection between the control cavity and the fan cavity, the control cavity is a watertight cavity, a gas detection cavity is provided on the side of the control cavity, a microcontroller, a power module, a wireless module, a fan drive module, and an alarm module are provided in the control cavity, a button module, an indication module and a second battery compartment are provided on the outer surface of the control cavity, and the button module includes a power on / off button, an automatic / manual mode switching button and a gear switching button.

[0012] Preferably, a second battery is installed in the second battery compartment, a gas collection port is arranged on the side of the gas detection cavity, a gas detection sensor array is arranged in the gas detection cavity, the wireless module, the gas detection sensor array, the button module, the indication module, the alarm module, and the fan drive module signal ports are electrically connected to the microcontroller respectively, and the fan drive module output port is electrically connected to the fan.

[0013] Preferably, the second battery is electrically connected to the input port of the power module to output multiple voltages, the output port of the power module is electrically connected to the power ports of the microcontroller, the wireless module, the gas detection sensor array, the alarm module and the fan drive module, and the wireless module is wirelessly connected to the communication module mainboard and the air pressure monitoring module.

[0014] Preferably, the power module contains multiple voltage conversion chips, the gas detection sensor array contains an oxygen concentration sensor, a carbon dioxide sensor, and an air pressure sensor, the wireless module contains a Bluetooth and WiFi module, and the air pressure monitoring module contains an air pressure sensor module, a Bluetooth module, a low-power single-chip computer module, a voltage conversion module, and a button battery. The air pressure sensor module and the Bluetooth module are electrically connected to the low-power single-chip computer module respectively, and the voltage conversion module is electrically connected to the button battery to provide power to the module.

[0015] In addition, the present invention also discloses an operation method of an intelligent respirator system for a gas mask, which comprises the following steps: Step 1: Initialize the communication module mainboard, microcontroller, wireless module, gas detection sensor array, and air pressure monitoring module, and enable microcontroller interrupts; Step 2: The air pressure monitoring module collects the human breathing pressure data in the gas mask; Step 3: The gas detection sensor array collects ambient oxygen, air pressure and carbon dioxide concentration data; Step 4: The microcontroller reads the human respiratory pressure data from the air pressure monitoring module through the wireless module, and the microcontroller reads the oxygen, air pressure and carbon dioxide concentration data from the gas detection sensor array; Step 5: When the microcontroller detects that the human respiratory pressure data exceeds the working threshold, the microcontroller obtains the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval in the respiratory cycle according to the human respiratory pressure data of the air pressure monitoring module. The microcontroller calculates the time between the maximum pressure changes in the two respiratory cycles before and after through the built-in timer, and obtains the time T of a single respiratory cycle. The microcontroller calculates the number of human breaths per minute through the time of a single respiratory cycle, that is, the real-time respiratory frequency R of the human body, and the calculation formula is R=T / 60; Step 6: The microcontroller calculates the average value P of the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval during the breathing cycle. The microcontroller calculates the current altitude H based on the air pressure data of the gas detection sensor array using the air pressure-altitude formula; Step 7: The microcontroller divides the respiratory frequency into multiple frequency bands from low to high according to the working state of the human body. Each frequency band corresponds to multiple gears of the fan air volume. The higher the frequency band, the greater the corresponding fan air volume. Step 8: The microcontroller determines the monotonic rising and monotonic falling trends of the respiratory pressure data. If it rises monotonically to the average value P, it is determined to enter the exhalation interval. If it drops monotonically to the average value P, it is determined to enter the inhalation interval. Step 9: When the microcontroller determines that it has entered the exhalation interval, the microcontroller sends a PWM command to the fan drive module to drive the fan to stop running; when the microcontroller determines that it has entered the inhalation interval, the microcontroller determines that the real-time respiratory frequency R of the human body is within a certain frequency range, and the microcontroller sends a PWM command to the fan drive module to drive the fan to deliver air at the fan gear corresponding to the frequency range, and the microcontroller drives the indication module to indicate the current air volume gear; Step 10: The microcontroller determines that the current environment is not suitable for the respirator working mode according to the sensor data of the gas detection sensor array. When the oxygen concentration detected by the gas detection sensor array is lower than the oxygen warning setting value or the carbon dioxide content exceeds the carbon dioxide warning setting value, and the altitude H is less than the altitude warning setting value, the microcontroller issues a control instruction to drive the alarm module to alarm, prompting the operator to evacuate the current working area. When the microcontroller calculates that the current altitude H is greater than the altitude warning setting value, it determines that the current ambient air is thin, and the microcontroller issues a PWM instruction to the fan drive module to drive the fan to increase the air supply volume in the inhalation interval. Step 11: When the microcontroller detects that the human respiratory pressure data is lower than the working threshold, it is determined that the operator is not using the intelligent respirator at this time, and the microcontroller sends a PWM command to the fan drive module to drive the fan to stop running; Step 12: The microcontroller sends the read gas detection sensor array sensor data to the communication module mainboard via the wireless module, and sends the gas detection sensor array sensor data to the remote command end through the communication module mainboard. At the same time, the communication module mainboard provides an external detection module wireless sensor data access port, which can complete the external detection module sensor data transmission at the same time; Step 13: When manual operation is required, the button module can be used to switch to manual mode, and the air volume level can be manually switched by pressing the button; Step 14: Repeat steps 2 to 13.

[0016] The present invention has the following beneficial effects: 1. The present invention only collects the breathing pressure in the gas mask, that is, it can follow the human breathing rhythm and automatically adjust the respirator to filter and supply air to the gas mask, thus fundamentally solving the problem of breathing comfort for gas mask users; 2. The present invention provides an early warning for the working mode of the respirator filtering and supplying air, and can warn whether the current environment is suitable for the working mode of the respirator, making the use of the respirator in a safer environment; 3. The present invention can automatically identify the thin air environment at high altitudes according to the air pressure environment, timely adjust the air supply of the respirator, increase the air supply, and be more friendly to personnel entering high altitude environments; 4. The present invention provides sensor data access and remote wireless data transmission functions, and can complete data transmission without external communication equipment, which is more convenient to use; 5. The present invention adopts an integrated design as a whole, with high integration and convenient wearing and use; 6. The present invention has an intelligent respirator system with a simple structure and convenient operation. It provides manual and automatic control modes. In the automatic mode, the intelligent respirator can work when wearing a gas mask, and the intelligent respirator automatically stops working when the gas mask is removed, thereby meeting the requirements of convenient control and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side schematic diagram of the overall structure of the gas mask intelligent respirator system of the present invention; Figure 2 This is a schematic diagram of the connection structure between the intelligent respirator and the gas mask of the present invention; Figure 3 It is the overall circuit structure diagram of the present invention; Figure 4 It is a schematic diagram of the back structure of the intelligent respirator system of the present invention; Figure 5 This is a schematic diagram of the internal structure of the communication module cavity of the present invention; Figure 6 This is a schematic diagram of the side structure of the communication module cavity of the present invention; Figure 7 This is a schematic diagram of the internal structure of the fan cavity of the present invention; Figure 8 This is a schematic diagram of the internal structure of the control cavity of the present invention; Fig. 9 This is a schematic diagram of the outer surface structure of the control cavity of the present invention; Fig.10 This is a schematic diagram of the internal structure of the gas mask tested by the present invention; In the figure: respirator body 1, filter interface 2, fan interface 3, communication module cavity 4, antenna installation cavity 5, communication module mainboard 6, first battery compartment 7, first battery 8, microcontroller 9, power module 10, wireless module 11, gas detection sensor array 12, button module 13, indication module 14, fan drive module 15, fan 16, fan cavity 17, control cavity 18, air outlet 19, air outlet 20, second battery compartment 21, second battery 22, air pressure monitoring module 23, bellows 24, fan connector 25, mask connector 26, gas detection cavity 27, antenna 28, alarm module 29, filter 30, control system 31, gas mask 32, communication system 33, ventilation system 34. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: See also Figures 1 to 10 A smart respirator system for a gas mask comprises a respirator body 1, wherein the respirator body 1 is a flat single-tank filter element structure provided with a shoulder strap, a filter element interface 2 and a fan interface 3 are arranged in parallel from top to bottom on the front of the respirator body 1, the filter element interface 2 is connected to the filter element 30 by a thread, the fan interface 3 is connected to a ventilation system 34, a communication system 33 is arranged on the back of the respirator body 1, a control system 31 is arranged on the back of the ventilation system 34, the ventilation system 34 is connected to the mask interface 26 of the gas mask 32 through a bellows 24, and an air pressure monitoring module 23 is arranged in the water-blocking cover of the gas mask 32.

[0019] Preferably, the ventilation system 34 includes a fan cavity 17, a fan 16 is arranged in the fan cavity 17, an air inlet 19 is arranged on the front of the fan cavity 17, an air outlet 20 is arranged on the side of the fan cavity 17, the air inlet 19 is connected to the fan interface 3, the air outlet 20 is connected to the fan connector 25, the fan connector 25 is connected to one end of the bellows 24, and the fan cavity 17 is an airtight cavity. The fan 16 is a large air volume turbo blower, and the main body of the bellows 24 is made of butyl rubber material.

[0020] Preferably, the communication system 33 includes a communication module cavity 4, a communication module mainboard 6 is arranged inside the communication module cavity 4, a first battery compartment 7 is arranged on the side of the communication module cavity 4, and an antenna installation cavity 5 is arranged on the front of the communication module cavity 4.

[0021] Preferably, an antenna 28 is installed inside the antenna installation cavity 5, a first battery 8 is provided in the first battery compartment 7, the antenna interface of the communication module mainboard 6 is electrically connected to the antenna 28, and the first battery 8 is electrically connected to the power interface of the communication module mainboard 6. The antenna 28 is two omnidirectional flexible patch antennas.

[0022] Preferably, the communication module mainboard 6 contains a voltage-stabilized power supply module, a Bluetooth module, a WiFi module, a radio frequency module, a processor module, and an antenna interface, and the voltage-stabilized power supply module, the Bluetooth module, the WiFi module, and the radio frequency module are electrically connected to the processor module respectively.

[0023] Preferably, the control system 31 includes a control cavity 18, the control cavity 18 and the fan cavity 17 are connected at the joint with a sealing ring, the control cavity 18 is a watertight cavity, a gas detection cavity 27 is arranged on the side of the control cavity 18, a microcontroller 9, a power module 10, a wireless module 11, a fan drive module 15, and an alarm module 29 are arranged in the control cavity 18, and a key module 13, an indication module 14, and a second battery compartment 21 are arranged on the outer surface of the control cavity 18, and the key module 13 includes a power on / off key, an automatic / manual mode switching key, and a gear switching key. The microcontroller 9 adopts a high-performance single-chip microcomputer, the indication module 14 includes three-color LED indicator lights, and the alarm module 29 adopts a buzzer.

[0024] Preferably, a second battery 22 is installed in the second battery compartment 21, a gas collection port is arranged on the side of the gas detection cavity 27, a gas detection sensor array 12 is arranged in the gas detection cavity 27, the wireless module 11, the gas detection sensor array 12, the button module 13, the indication module 14, the alarm module 29, and the fan drive module 15 signal ports are electrically connected to the microcontroller 9 respectively, and the output port of the fan drive module 15 is electrically connected to the fan 16.

[0025] Preferably, the second battery 22 is electrically connected to the input port of the power module 10 to output multiple voltages, the output port of the power module 10 is electrically connected to the power ports of the microcontroller 9, the wireless module 11, the gas detection sensor array 12, the alarm module 29 and the fan drive module 15, and the wireless module 11 is wirelessly connected to the communication module mainboard 6 and the air pressure monitoring module 23.

[0026] Preferably, the power module 10 contains multiple voltage conversion chips, the gas detection sensor array 12 contains an oxygen concentration sensor, a carbon dioxide sensor, and an air pressure sensor, the wireless module 11 contains a Bluetooth and WiFi module, and the air pressure monitoring module 23 contains an air pressure sensor module, a Bluetooth module, a low-power single-chip computer module, a voltage conversion module, and a button battery. The air pressure sensor module and the Bluetooth module are electrically connected to the low-power single-chip computer module respectively, and the voltage conversion module is electrically connected to the button battery to provide power to the module.

[0027] In addition, the present invention also discloses an operation method of an intelligent respirator system for a gas mask, which comprises the following steps: Step 1: Initialize the communication module mainboard 6, the microcontroller 9, the wireless module 11, the gas detection sensor array 12, and the air pressure monitoring module 23, and turn on the microcontroller 9 interrupt; Step 2: The air pressure monitoring module 23 collects the human body breathing pressure data in the gas mask 32; Step 3: The gas detection sensor array 12 collects ambient oxygen, air pressure and carbon dioxide concentration data; Step 4: The microcontroller 9 reads the human respiratory pressure data from the air pressure monitoring module 23 through the wireless module 11, and the microcontroller 9 reads the oxygen, air pressure and carbon dioxide concentration data from the gas detection sensor array 12; Step 5: When the microcontroller 9 detects that the human respiratory pressure data exceeds the working threshold, the microcontroller 9 obtains the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval in the respiratory cycle according to the human respiratory pressure data of the air pressure monitoring module 23. The microcontroller 9 calculates the time between the maximum pressure changes in the two respiratory cycles before and after through the built-in timer, and can obtain the time T of a single respiratory cycle. The microcontroller 9 calculates the number of human breaths per minute through the time of a single respiratory cycle, that is, the real-time respiratory frequency R of the human body, and the calculation formula is R=T / 60; Step 6: The microcontroller 9 calculates the average value P of the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval during the breathing cycle. The microcontroller 9 calculates the current altitude H according to the pressure data of the gas detection sensor array 12 by using the pressure-altitude formula; Step 7: The microcontroller 9 divides the respiratory frequency into multiple frequency segments from low to high according to the working state of the human body. Each frequency segment corresponds to multiple gear air volume of the fan. The higher the frequency segment, the larger the corresponding fan air volume. Step 8: The microcontroller 9 determines the monotonic rising and monotonic falling trends of the respiratory pressure data. If it rises monotonically to the average value P, it is determined to enter the exhalation interval. If it drops monotonically to the average value P, it is determined to enter the inhalation interval. Step 9: When the microcontroller 9 determines that it has entered the exhalation interval, the microcontroller sends a PWM instruction to the fan drive module 15 to drive the fan 16 to stop running; when the microcontroller 9 determines that it has entered the inhalation interval, the microcontroller 9 determines that the real-time respiratory frequency R of the human body is within a certain frequency range, and the microcontroller sends a PWM instruction to the fan drive module 15 to drive the fan 16 to deliver air at the fan gear corresponding to the frequency range, and the microcontroller 9 drives the indication module 14 to indicate the current air volume gear; Step 10: The microcontroller 9 determines that the current environment is not suitable for the respirator working mode according to the sensor data of the gas detection sensor array 12, when the oxygen concentration detected by the gas detection sensor array 12 is lower than the oxygen warning setting value or the carbon dioxide content exceeds the carbon dioxide warning setting value, and the altitude H is less than the altitude warning setting value, the microcontroller 9 issues a control instruction to drive the alarm module 29 to alarm, prompting the operator to evacuate the current working area. When the microcontroller 9 calculates that the current altitude H is greater than the altitude warning setting value, it is determined that the current ambient air is thin, and the microcontroller issues a PWM instruction to the fan drive module 15 to drive the fan 16 to increase the air supply volume in the inhalation interval; Step 11: When the microcontroller 9 detects that the human respiratory pressure data is lower than the working threshold, it is determined that the operator is not using the intelligent respirator at this time, and the microcontroller 9 sends a PWM command to the fan drive module 15 to drive the fan 16 to stop running; Step 12: The microcontroller 9 sends the sensor data of the gas detection sensor array 12 read to the communication module mainboard 6 via the wireless module 11, and sends the sensor data of the gas detection sensor array 12 to the remote command end through the communication module mainboard 6. At the same time, the communication module mainboard 6 provides an external detection module wireless sensor data access port, which can complete the external detection module sensor data transmission at the same time; Step 13: When manual operation is required, the button module 13 can be used to switch to manual mode, and the air volume level can be manually switched by pressing the button; Step 14: Repeat steps 2 to 13.

[0028] The working process and working principle of the present invention are: The tester connects the respirator body 1 to the gas mask through the bellows 24 through the fan connector 25 and the mask connector 26 according to the requirements of the specification, installs the air pressure monitoring module 23 in the water-blocking cover of the gas mask, carries the respirator body 1 on the back through the strap, turns on the intelligent respirator through the button module 13, wears the gas mask, and the air pressure monitoring module 23 and the air pressure sensor module collect the human breathing pressure data in the gas mask, and the gas detection sensor array 12 collects the ambient oxygen, air pressure and carbon dioxide concentration data; the microcontroller 9 reads the human breathing pressure data of the air pressure monitoring module 23 through the wireless module 11, The microcontroller 9 reads the oxygen, air pressure and carbon dioxide concentration data of the gas detection sensor array 12; when the microcontroller 9 detects that the human respiratory pressure data exceeds the working threshold, the microcontroller 9 obtains the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval within the respiratory cycle according to the human respiratory pressure data of the air pressure monitoring module 23. The microcontroller 9 calculates the time between the maximum pressure changes in the two previous and next respiratory cycles through the built-in timer, and can obtain the time T of a single respiratory cycle. The microcontroller 9 calculates the number of human breaths per minute through the time of a single respiratory cycle, that is, the real-time respiratory frequency R of the human body.The microcontroller 9 calculates the average value P of the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval in a single breathing cycle. The microcontroller 9 calculates the current altitude H according to the air pressure data of the gas detection sensor array 12; the microcontroller 9 divides the respiratory frequency from low to high into multiple frequency segments according to the working state of the human body, and each frequency segment corresponds to multiple gear air volumes of the fan. The higher the frequency segment, the larger the corresponding fan air volume; the microcontroller 9 determines the monotonic rising and monotonic falling trends of the respiratory pressure data. If it rises monotonically to the average value P, it is judged that it enters the exhalation interval. If it drops monotonically to the average value P, it is judged that it enters the inhalation interval. When The microcontroller 9 determines that it has entered the exhalation interval, and the microcontroller sends a PWM instruction to the fan drive module 15 to drive the fan 16 to stop running; when the microcontroller 9 determines that it has entered the inhalation interval, the microcontroller 9 determines that the real-time respiratory rate R of the human body is within a certain frequency range, and the microcontroller sends a PWM instruction to the fan drive module 15 to drive the fan 16 to supply air at the fan gear corresponding to the frequency range, and the microcontroller 9 drives the indication module 14 to indicate the current air volume gear; the microcontroller 9 determines that the oxygen concentration detected by the gas detection sensor array 12 is lower than the oxygen warning setting value or the dioxygen warning setting value according to the sensor data of the gas detection sensor array 12. If the carbon dioxide content exceeds the carbon dioxide warning setting value and the altitude H is less than the altitude warning setting value, it is determined that the current environment is not suitable for the respirator working mode, and the microcontroller 9 sends a control instruction to drive the alarm module 29 to alarm. The alarm module 29 continuously alarms to prompt the operator to evacuate the current working area. When the microcontroller 9 calculates that the current altitude H is greater than the altitude warning setting value, it is determined that the current ambient air is thin, and the microcontroller sends a PWM instruction to the fan drive module 15 to drive the fan 16 to increase the air supply in the inhalation interval; the microcontroller 9 reads the sensor data of the gas detection sensor array 12 through the wireless module 11 is sent to the communication module mainboard 6, and the sensor data of the gas detection sensor array 12 is sent to the remote command end through the communication module mainboard 6. At the same time, the communication module mainboard 6 provides an external detection module wireless sensor data access port, which can complete the external detection module sensor data transmission at the same time; when the microcontroller 9 detects that the human respiratory pressure data is lower than the working threshold, it is determined that the operator is not using the intelligent respirator at this time, and the microcontroller 9 sends a PWM command to the fan drive module 15 to drive the fan 16 to stop running; when the button module 13 is switched to manual mode, the air volume gear can be manually switched by pressing the button to increase or decrease the gear.

[0029] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An intelligent respirator system for a gas mask, characterized in that: The invention comprises a respirator body (1), wherein the respirator body (1) is a flat single-tank filter structure provided with a shoulder strap, wherein a filter interface (2) and a fan interface (3) are arranged in parallel from top to bottom on the front of the respirator body (1), wherein the filter interface (2) is connected to the filter (30) by means of a thread, and the fan interface (3) is connected to a ventilation system (34), wherein a communication system (33) is arranged on the back of the respirator body (1), and a control system (31) is arranged on the back of the ventilation system (34), wherein the ventilation system (34) is connected to a mask interface (26) of a gas mask (32) via a bellows (24), and wherein an air pressure monitoring module (23) is arranged in the water-blocking cover of the gas mask (32).

2. The intelligent respirator system for a gas mask according to claim 1, characterized in that: The ventilation system (34) comprises a fan cavity (17), a fan (16) is arranged in the fan cavity (17), an air suction port (19) is arranged on the front of the fan cavity (17), an air outlet (20) is arranged on the side of the fan cavity (17), the air suction port (19) is connected to the fan interface (3), the air outlet (20) is connected to the fan connector (25), the fan connector (25) is connected to one end of the bellows (24), and the fan cavity (17) is an airtight cavity.

3. The intelligent respirator system for a gas mask according to claim 1, characterized in that: The communication system (33) comprises a communication module cavity (4), a communication module mainboard (6) is arranged inside the communication module cavity (4), a first battery compartment (7) is arranged on the side of the communication module cavity (4), and an antenna installation cavity (5) is arranged on the front of the communication module cavity (4).

4. The intelligent respirator system for a gas mask according to claim 3, characterized in that: An antenna (28) is installed inside the antenna installation cavity (5), a first battery (8) is arranged in the first battery compartment (7), the antenna interface of the communication module mainboard (6) is electrically connected to the antenna (28), and the first battery (8) is electrically connected to the power interface of the communication module mainboard (6).

5. The intelligent respirator system for a gas mask according to claim 3, characterized in that: The communication module mainboard (6) contains a voltage-stabilized power supply module, a Bluetooth module, a WiFi module, a radio frequency module, a processor module, and an antenna interface. The voltage-stabilized power supply module, the Bluetooth module, the WiFi module, and the radio frequency module are electrically connected to the processor module respectively.

6. The intelligent respirator system for a gas mask according to claim 1, characterized in that: The control system (31) comprises a control cavity (18), wherein a sealing ring is provided at a connection between the control cavity (18) and the fan cavity (17), and the control cavity (18) is sealed and connected. The control cavity (18) is a watertight cavity. A gas detection cavity (27) is provided on the side of the control cavity (18). A microcontroller (9), a power module (10), a wireless module (11), a fan drive module (15), and an alarm module (29) are provided in the control cavity (18). A key module (13), an indication module (14), and a second battery compartment (21) are provided on the outer surface of the control cavity (18). The key module (13) comprises a power on / off key, an automatic / manual mode switching key, and a gear switching key.

7. An intelligent respirator system for a gas mask according to claim 6, characterized in that: A second battery (22) is installed in the second battery compartment (21); a gas collection port is arranged on the side of the gas detection cavity (27); a gas detection sensor array (12) is arranged in the gas detection cavity (27); the signal ports of the wireless module (11), the gas detection sensor array (12), the key module (13), the indication module (14), the alarm module (29), and the fan drive module (15) are respectively electrically connected to the microcontroller (9); and the output port of the fan drive module (15) is electrically connected to the fan (16).

8. The intelligent respirator system for a gas mask according to claim 7, characterized in that: The second battery (22) is electrically connected to the input port of the power module (10) to output a plurality of voltages; the output port of the power module (10) is electrically connected to the power ports of the microcontroller (9), the wireless module (11), the gas detection sensor array (12), the alarm module (29) and the fan drive module (15), respectively; and the wireless module (11) is wirelessly connected to the communication module mainboard (6) and the air pressure monitoring module (23).

9. An intelligent respirator system for a gas mask according to claim 8, characterized in that: The power module (10) contains a plurality of voltage conversion chips, the gas detection sensor array (12) contains an oxygen concentration sensor, a carbon dioxide sensor, and an air pressure sensor, the wireless module (11) contains a Bluetooth and WiFi module, and the air pressure monitoring module (23) contains an air pressure sensor module, a Bluetooth module, a low-power single-chip microcomputer module, a voltage conversion module, and a button battery. The air pressure sensor module and the Bluetooth module are electrically connected to the low-power single-chip microcomputer module respectively, and the voltage conversion module is electrically connected to the button battery to provide power to the module.

10. The method for operating an intelligent respirator system for a gas mask according to any one of claims 1 to 9, characterized in that: It contains the following steps: Step 1: Initialize the communication module mainboard (6), the microcontroller (9), the wireless module (11), the gas detection sensor array (12), and the air pressure monitoring module (23), and enable the interrupt of the microcontroller (9); Step 2: The air pressure monitoring module (23) collects the breathing pressure data of the human body in the gas mask (32); Step 3: The gas detection sensor array (12) collects ambient oxygen, air pressure and carbon dioxide concentration data; Step 4: The microcontroller (9) reads the human respiratory pressure data from the air pressure monitoring module (23) through the wireless module (11), and the microcontroller (9) reads the oxygen, air pressure and carbon dioxide concentration data from the gas detection sensor array (12); Step 5: When the microcontroller (9) detects that the human respiratory pressure data exceeds the working threshold, the microcontroller (9) obtains the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval in the respiratory cycle according to the human respiratory pressure data of the air pressure monitoring module (23). The microcontroller (9) calculates the time between the maximum pressure changes in the two respiratory cycles before and after through the built-in timer to obtain the time T of a single respiratory cycle. The microcontroller (9) calculates the number of human breaths per minute through the time of a single respiratory cycle, that is, the real-time respiratory frequency R of the human body, and the calculation formula is R=T / 60; Step 6: The microcontroller (9) calculates the average value P of the maximum pressure change in the exhalation interval and the minimum pressure change in the inhalation interval during the breathing cycle. The microcontroller (9) calculates the current altitude H according to the air pressure data of the gas detection sensor array (12) using the air pressure-altitude formula; Step 7: The microcontroller (9) divides the respiratory frequency from low to high into a plurality of frequency bands according to the working state of the human body, and each frequency band corresponds to a plurality of air volume levels of the fan, and a higher frequency band corresponds to a greater air volume of the fan; Step 8: The microcontroller (9) determines the monotonic rising and monotonic falling trends of the respiratory pressure data. If it rises monotonically to the average value P, it is determined to enter the exhalation interval. If it falls monotonically to the average value P, it is determined to enter the inhalation interval. Step 9: When the microcontroller (9) determines that the exhalation interval has been entered, the microcontroller sends a PWM instruction to the fan drive module (15) to drive the fan (16) to stop running; when the microcontroller (9) determines that the inhalation interval has been entered, the microcontroller (9) determines that the real-time respiratory frequency R of the human body is within a certain frequency range, and the microcontroller sends a PWM instruction to the fan drive module (15) to drive the fan (16) to deliver air at a fan gear corresponding to the frequency range, and the microcontroller (9) drives the indication module (14) to indicate the current air volume gear; Step 10: The microcontroller (9) determines that the current environment is not suitable for the respirator working mode when the oxygen concentration detected by the gas detection sensor array (12) is lower than the oxygen warning setting value or the carbon dioxide content exceeds the carbon dioxide warning setting value and the altitude H is less than the altitude warning setting value based on the sensor data of the gas detection sensor array (12). The microcontroller (9) issues a control instruction to drive the alarm module (29) to alarm and prompt the operator to evacuate the current working area. When the microcontroller (9) calculates that the current altitude H is greater than the altitude warning setting value, the microcontroller determines that the air in the current environment is thin, and the microcontroller issues a PWM instruction to the fan drive module (15) to drive the fan (16) to increase the air supply volume in the inhalation interval. Step 11: When the microcontroller (9) detects that the human respiratory pressure data is lower than the working threshold, it is determined that the operator is not using the intelligent respirator at this time, and the microcontroller (9) sends a PWM command to the fan drive module (15) to drive the fan (16) to stop running; Step 12: The microcontroller (9) sends the sensor data of the gas detection sensor array (12) read out to the communication module mainboard (6) via the wireless module (11), and sends the sensor data of the gas detection sensor array (12) to the remote command end via the communication module mainboard (6). At the same time, the communication module mainboard (6) provides an external detection module wireless sensor data access port, and can complete the transmission of the sensor data of the external detection module at the same time; Step 13: When manual operation is required, the button module (13) can be used to switch to manual mode, and the air volume level can be manually switched by pressing the button; Step 14: Repeat steps 2 to 13.

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