Breathing parameter detection device for gas mask and operation method

Abstract

The invention provides a breathing parameter detection device for a gas mask, which comprises a gas mask provided with a fixing belt, the gas mask is arranged on the front side of the gas mask, a water blocking cover is arranged in the gas mask, an internal data acquisition system is arranged in the water blocking cover, a data receiving system is arranged on a hoop on the side edge of the gas mask, and a data transmission system is arranged on the data receiving system. And the internal data acquisition system and the data receiving system are in wireless interconnection. The gas mask can be directly worn on a tester to detect various breathing parameters, and the problem that the breathing parameters in the gas mask are difficult to detect can be effectively solved; a breathing machine can be quickly connected to simulate an operator to wear a gas mask for breathing, various breathing parameters in the gas mask can be quickly and accurately collected and detected in real time, and the device can be used for detecting the breathing parameters of the gas mask in different activity states and scientifically researching the change process of the breathing parameters in the gas mask.

Description

Technical Field

[0001] The invention relates to the technical field of breathing detection for gas masks, and in particular to a breathing parameter detection device and an operating method for gas masks. Background Art

[0002] The gas mask breathing parameter detection device is used for the detection of gas mask breathing parameters under different activity states and the scientific research on the correlation and influence between breathing parameters in the gas mask. At present, there is no relevant breathing detection device for gas masks on the market. When testing and studying the breathing parameters of gas masks, a ventilator is generally used to set fixed parameters to simulate the breathing process and perform quantitative breathing tests on the gas mask. However, the real-time changes of the breathing parameters inside the gas mask, such as breathing frequency, breathing pressure, internal and external breathing pressure difference, breathing temperature and humidity, and breathing carbon dioxide content in the mask, are difficult to measure, and it is difficult for testers to obtain multiple breathing parameter data and parameter changes in the gas mask for analysis and research.

[0003] Comparative document CN207439463U discloses a device for measuring internal parameters of a gas mask, and the protected claim is: "It includes a sensor array, the sensor array is communicatively connected to a central processing unit, the central processing unit is communicatively connected to an alarm, and the central processing unit is wirelessly connected to a remote monitoring terminal via a wireless communication module; the sensor array is built into the gas mask, and measures the air pressure, temperature, and toxic and harmful gas concentration parameters inside the gas mask, and transmits them to the remote monitoring terminal in real time through the built-in wireless communication module for real-time monitoring. When it is found that these parameters exceed the normal range, an alarm is immediately issued and necessary emergency measures are taken, which can effectively prevent the wearer from being harmed without knowing it." The main problem it solves is to measure the air pressure, temperature, and toxic and harmful gas concentration parameters inside the gas mask, effectively preventing the wearer from being harmed without knowing it, but it is impossible to measure the wearer's breathing parameters, and the real-time changes in the breathing parameters inside the gas mask are even more difficult to obtain.

[0004] Therefore, there is an urgent need for a breathing parameter detection device 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 a breathing parameter detection device 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: a breathing parameter detection device for a gas mask, comprising a gas mask provided with a fixing belt, a gas mask provided with a gas mask on the front, a water-blocking cover provided inside the gas mask, an internal data acquisition system provided inside the water-blocking cover, a data receiving system provided on the side clamp of the gas mask, and the internal data acquisition system and the data receiving system are wirelessly interconnected.

[0007] Preferably, the internal data acquisition system includes an internal data acquisition cavity, in which a first air pressure sensor, a first microprocessor, a first Bluetooth module, a first power module, a first battery, a first temperature and humidity sensor, and a carbon dioxide sensor are arranged, and a charging interface and a first button module are arranged on the upper side of the outer side of the internal data acquisition cavity, the first power module contains a variety of voltage conversion chips, and the first battery is a rechargeable polymer lithium battery with a built-in charge and discharge protection board.

[0008] Preferably, the internal data acquisition cavity has an upper cover on the front side, a sensor data acquisition port is provided on the inner side of the upper cover, a first air pressure sensor, a first temperature and humidity sensor, and a carbon dioxide sensor are installed on the sensor data acquisition port, and a bracket structure is provided on the back side to fix the mask.

[0009] Preferably, the first air pressure sensor, the first Bluetooth module, the first temperature and humidity sensor, the carbon dioxide sensor, and the first button module are electrically connected to the first microprocessor, the first battery is electrically connected to the input port of the first power module, the output port of the first power module is respectively electrically connected to the first air pressure sensor, the first Bluetooth module, the first temperature and humidity sensor, the carbon dioxide sensor, and the power port of the first microprocessor to provide power, and the charging interface is electrically connected to the first battery.

[0010] Preferably, the data receiving system includes a data receiving cavity, a USB interface and a second key module are arranged on the outer side of the data receiving cavity, and a second air pressure sensor, a second microprocessor, a second Bluetooth module, a second power supply module, a second battery, a serial port conversion module, a second temperature and humidity sensor and a storage module are arranged inside the data receiving cavity; the second power supply module contains a variety of voltage conversion chips, and the second battery is a rechargeable polymer lithium battery with a built-in charge and discharge protection board.

[0011] Preferably, the front of the data receiving cavity contains an upper cover, the inner side of the upper cover is provided with a sensor data acquisition port, the second air pressure sensor and the second temperature and humidity sensor are installed on the sensor data acquisition port, and the back of the data receiving cavity is provided with a buckle to fix it to the gas mask.

[0012] Preferably, the second air pressure sensor, the second Bluetooth module, the serial port conversion module, the second temperature and humidity sensor, the storage module, and the second button module are electrically connected to the second microprocessor, the second battery is electrically connected to the input port of the second power module, and the output port of the second power module is respectively electrically connected to the second air pressure sensor, the second Bluetooth module, the serial port conversion module, the second temperature and humidity sensor, the storage module, and the power port of the second microprocessor to provide power, the serial port conversion module is electrically connected to the USB interface, and the power port of the USB interface is electrically connected to the second battery.

[0013] Preferably, the internal data acquisition system and the data receiving system are wirelessly interconnected via a first Bluetooth module and a second Bluetooth module provided in their respective cavities.

[0014] Preferably, the first key module provided in the internal data acquisition cavity is set as a power-on key, and the second key module provided in the data receiving cavity is set as a power-off key.

[0015] In addition, the present invention also discloses an operating method of a breathing parameter detection device for a gas mask, which comprises the following steps: Step 1: Initialize the first air pressure sensor, the second air pressure sensor, the first microprocessor, the second microprocessor, the first Bluetooth module, the second Bluetooth module, the first temperature and humidity sensor, the second temperature and humidity sensor, the carbon dioxide sensor, and the storage module, and enable the first microprocessor and the second microprocessor interrupts; Step 2: The first microprocessor reads the pressure data of the first air pressure sensor. When the data of the first air pressure sensor exceeds the minimum exhalation setting threshold, the first microprocessor determines that the breathing test process starts. The first microprocessor reads the data of the first air pressure sensor, the first temperature and humidity sensor, and the carbon dioxide sensor. The first microprocessor sends a collection instruction to the second microprocessor through the first Bluetooth module; Step 3: The second microprocessor receives the acquisition instruction signal sent by the first microprocessor, the second microprocessor starts timing, and the second microprocessor starts reading the data of the second air pressure sensor and the second temperature and humidity sensor; Step 4: The first microprocessor drives the first Bluetooth module to send the data of the first air pressure sensor, the first temperature and humidity sensor, and the carbon dioxide sensor to the second Bluetooth module, and the second microprocessor obtains the data of the first air pressure sensor, the first temperature and humidity sensor, and the carbon dioxide sensor through the second Bluetooth module; Step 5: The second microprocessor calculates the difference between the first air pressure sensor and the second air pressure sensor to obtain the pressure difference data between the inside and outside of the gas mask; Step 6: The second microprocessor analyzes the rising and falling trends of the pressure data based on the collected pressure difference data inside and outside the gas mask. When the pressure data rises monotonically before reaching the reference threshold and reaches the reference threshold, it is considered that the inhalation stage is transferred to the exhalation stage; when the detection data before the reference threshold drops monotonically and reaches the reference threshold, it is considered that the exhalation stage is transferred to the inhalation stage, and the user's breathing cycle T can be obtained. The second microprocessor calculates the breathing frequency according to the breathing cycle; Step 7: The second microprocessor writes the breathing data of the first air pressure sensor, the first temperature and humidity sensor, and the carbon dioxide sensor inside the mask, the ambient air pressure and temperature and humidity data, the breathing pressure difference data, and the breathing cycle and breathing frequency data obtained during the breathing test period into the storage module; Step 8: When the data of the first air pressure sensor exceeds the minimum exhalation setting threshold, the first microprocessor determines that the breathing test process is over; Step 9: The first microprocessor stops collecting data and sends an instruction to the second microprocessor. The second microprocessor stops collecting data, stops timing, and writes the breathing test duration into the storage module. Step 10: The second microprocessor can send the breathing data to the USB interface through the serial port conversion module, and can send the breathing data to the PC through the USB interface; Step 11: Repeat steps 2 to 10.

[0016] The present invention has the following beneficial effects: 1. The gas mask breathing parameter detection device and method of the present invention, by arranging data collection cavities and data receiving cavities inside and outside the mask, can not only quickly access the breathing machine to simulate the operator wearing the gas mask to breathe, but also can be directly worn on the test personnel, and quickly and accurately detect the breathing pressure, breathing temperature and humidity, carbon dioxide and other breathing parameter data in the gas mask, the environmental air pressure and temperature and humidity data, the breathing pressure difference data, the breathing cycle and breathing frequency and other real-time data of various breathing parameters and the change process during the test period; 2. The overall transmission of the present invention adopts wireless mode, which ensures the airtightness of the mask after wearing, making the detection result more accurate compared with wired connection; 3. The data acquisition cavity and the data receiving cavity of the present invention can be adapted to different gas masks for testing breathing parameters, and have a wide range of applications; 4. The present invention can automatically start and stop the breathing test according to the breathing pressure and test in different time periods; 5. The present invention adopts modular design, has simple structure and convenient operation, and can effectively solve the problem that breathing parameters in gas masks are difficult to test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the present invention; Figure 2 It is the overall circuit structure diagram of the present invention; Figure 3 This is a diagram showing the internal structure of the test mask of the present invention; Figure 4 This is a front schematic diagram of the data acquisition cavity structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the data acquisition cavity of the present invention; Figure 6 This is a side schematic diagram of the data acquisition cavity structure of the present invention; Figure 7 This is a front view schematic diagram of the data receiving cavity structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the data receiving cavity of the present invention; Fig. 9 It is a side schematic diagram of the data receiving cavity structure of the present invention; Fig.10 A schematic diagram of an embodiment of the present invention; In the figure: gas mask 1, gas mask 2, first air pressure sensor 3, second air pressure sensor 4, first microprocessor 5, second microprocessor 6, first Bluetooth module 7, second Bluetooth module 8, first power module 9, second power module 10, first battery 11, second battery 12, charging interface 13, serial port conversion module 14, USB interface 15, internal data acquisition cavity 16, data receiving cavity 17, water blocking cover 18, first temperature and humidity sensor 19, second temperature and humidity sensor 20, carbon dioxide sensor 21, storage module 22, first button module 23, second button module 24, internal data acquisition system 25, data receiving system 26. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: See also Figures 1 to 9 A breathing parameter detection device for a gas mask comprises a gas mask 1 provided with a fixing belt, a gas mask 2 is provided on the front of the gas mask 1, a water blocking cover 18 is provided inside the gas mask 2, an internal data acquisition system 25 is provided inside the water blocking cover 18, a data receiving system 26 is provided on the side clamp of the gas mask 2, and the internal data acquisition system 25 and the data receiving system 26 are interconnected by wireless.

[0019] Preferably, the internal data acquisition system 25 includes an internal data acquisition cavity 16, in which a first air pressure sensor 3, a first microprocessor 5, a first Bluetooth module 7, a first power module 9, a first battery 11, a first temperature and humidity sensor 19 and a carbon dioxide sensor 21 are arranged, and a charging interface 13 and a first key module 23 are arranged above the outer side of the internal data acquisition cavity 16, the first power module 9 contains a variety of voltage conversion chips, and the first battery 11 is a rechargeable polymer lithium battery with a built-in charge and discharge protection board. The first microprocessor 5 adopts a single-chip microcomputer, and the specific model can be STC32G12K128; the charging interface 13 can be set as a microUSB interface.

[0020] Preferably, the front of the internal data acquisition cavity 16 includes an upper cover, the inner side of the upper cover is provided with a sensor data acquisition port, the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 are installed on the sensor data acquisition port, and a bracket structure is provided on the back to fix the mask. The first air pressure sensor 3 adopts a MEMS digital absolute pressure sensor, the specific model is SPL07-001; the first temperature and humidity sensor 19 adopts a MEMS sensor, the specific model can be 20HTU21D; the carbon dioxide sensor 21 contains a signal amplification circuit and a filter circuit, the model can be MH-410D.

[0021] Preferably, the first air pressure sensor 3, the first Bluetooth module 7, the first temperature and humidity sensor 19, the carbon dioxide sensor 21, and the first button module 23 are electrically connected to the first microprocessor 5, the first battery 11 is electrically connected to the input port of the first power module 9, and the output port of the first power module 9 is respectively electrically connected to the first air pressure sensor 3, the first Bluetooth module 7, the first temperature and humidity sensor 19, the carbon dioxide sensor 21, and the power port of the first microprocessor 5 to provide power, and the charging interface 13 is electrically connected to the first battery 11.

[0022] Preferably, the data receiving system 26 includes a data receiving cavity 17, the outer side of the data receiving cavity 17 is provided with a USB interface 15 and a second key module 24, the data receiving cavity 17 is provided with a second air pressure sensor 4, a second microprocessor 6, a second Bluetooth module 8, a second power module 10, a second battery 12, a serial port conversion module 14, a second temperature and humidity sensor 20 and a storage module 22; the second power module 10 contains a variety of voltage conversion chips, the second battery 12 is a rechargeable polymer lithium battery, and a charge and discharge protection board is built in. The second microprocessor 6 adopts a single-chip microcomputer, and the specific model can be STC32G12K128; the serial port conversion module 14 adopts a serial port to USB module; the storage module 22 adopts an SD card.

[0023] Preferably, the front of the data receiving cavity 17 includes an upper cover, the inner side of the upper cover is provided with a sensor data acquisition port, the second air pressure sensor 4 and the second temperature and humidity sensor 20 are installed on the sensor data acquisition port, and the back of the data receiving cavity 17 is provided with a buckle to fix the gas mask 2. The second air pressure sensor 4 adopts a MEMS digital absolute pressure sensor, the specific model is SPL07-001; the second temperature and humidity sensor 20 adopts a MEMS sensor, the specific model can be selected as 20HTU21D.

[0024] Preferably, the second air pressure sensor 4, the second Bluetooth module 8, the serial port conversion module 14, the second temperature and humidity sensor 20, the storage module 22, and the second button module 24 are electrically connected to the second microprocessor 6, the second battery 12 is electrically connected to the input port of the second power module 10, and the output port of the second power module 10 is respectively electrically connected to the second air pressure sensor 4, the second Bluetooth module 8, the serial port conversion module 14, the second temperature and humidity sensor 20, the storage module 22, and the power port of the second microprocessor 6 to provide power, the serial port conversion module 14 is electrically connected to the USB interface 15, and the power port of the USB interface 15 is electrically connected to the second battery 12.

[0025] Preferably, the internal data acquisition system 25 and the data receiving system 26 are wirelessly interconnected via the first Bluetooth module 7 and the second Bluetooth module 8 provided in their respective cavities.

[0026] Preferably, the first button module 23 provided in the internal data acquisition cavity 16 is set as a power-on button, and the second button module 24 provided in the data receiving cavity 17 is set as a power-off button.

[0027] In addition, the present invention also discloses an operating method of a breathing parameter detection device for a gas mask, which comprises the following steps: Step 1: Initialize the first air pressure sensor 3, the second air pressure sensor 4, the first microprocessor 5, the second microprocessor 6, the first Bluetooth module 7, the second Bluetooth module 8, the first temperature and humidity sensor 19, the second temperature and humidity sensor 20, the carbon dioxide sensor 21, and the storage module 22, and enable the interrupts of the first microprocessor 5 and the second microprocessor 6; Step 2: The first microprocessor 5 reads the pressure data of the first air pressure sensor 3. When the data of the first air pressure sensor 3 exceeds the minimum exhalation setting threshold, the first microprocessor 5 determines that the breathing test process starts. The first microprocessor 5 reads the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21. The first microprocessor 5 sends a collection instruction to the second microprocessor 6 through the first Bluetooth module 7; Step 3: The second microprocessor 6 receives the acquisition instruction signal sent by the first microprocessor 5, the second microprocessor 6 starts timing, and the second microprocessor 6 starts reading the data of the second air pressure sensor 4 and the second temperature and humidity sensor 20; Step 4: The first microprocessor 5 drives the first Bluetooth module 7 to send the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 to the second Bluetooth module 8, and the second microprocessor 6 obtains the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 through the second Bluetooth module 8; Step 5: The second microprocessor 6 calculates the difference between the first air pressure sensor 3 and the second air pressure sensor 4 to obtain the pressure difference data between the inside and outside of the gas mask 2; Step 6: The second microprocessor 6 analyzes the rising and falling trends of the pressure data based on the collected internal and external pressure difference data of the gas mask 2. When the pressure data rises monotonically before reaching the reference threshold and reaches the reference threshold, it is considered that the inhalation stage is transferred to the exhalation stage; when the detection data before the reference threshold drops monotonically and reaches the reference threshold, it is considered that the exhalation stage is transferred to the inhalation stage, and the user's breathing cycle T can be obtained. The second microprocessor 6 calculates the respiratory frequency according to the breathing cycle; Step 7: The second microprocessor 6 writes the breathing data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 inside the mask, the ambient air pressure and temperature and humidity data, the breathing pressure difference data, the breathing cycle and breathing frequency data obtained during the breathing test period into the storage module 22; Step 8: When the data of the first air pressure sensor 3 exceeds the minimum exhalation setting threshold, the first microprocessor 5 determines that the breathing test process is over; Step 9: the first microprocessor 5 stops collecting data and sends an instruction to the second microprocessor 6, the second microprocessor 6 stops collecting data, the second microprocessor 6 stops timing, and writes the breathing test duration into the storage module 22; Step 10: The second microprocessor 6 can send the breathing data to the USB interface 15 through the serial port conversion module 14, and can send the breathing data to the PC through the USB interface 15; Step 11: Repeat steps 2 to 10.

[0028] See also Fig.10 In the test mode of the embodiment, the test head model can be used instead of the wearer to connect to the ventilator mode: The test personnel install the internal data acquisition cavity 16 in the water-blocking cover 18 of the gas mask 2 in accordance with the requirements of the specification; one end of the breathing circuit is connected to the breathing interface of the test head model, and the other end of the breathing circuit is connected to the air supply port of the ventilator; the data receiving cavity 17 is installed on the clamp of the gas mask 1, the gas mask 2 is worn on the test head model, the ventilator is turned on, the quantitative test parameters such as air supply volume, breathing ratio, humidity, etc. are set, the test head model is simulated to breathe, and the modules inside and outside the internal data acquisition cavity 16 and the data receiving cavity 17 of the gas mask 1 are turned on through the first button module 23 and the second button module 24; the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 obtain the face The pressure, temperature and humidity, and carbon dioxide breathing data inside the mask, the first microprocessor 5 reads the pressure data of the first air pressure sensor 3. When the data of the first air pressure sensor 3 exceeds the minimum exhalation setting threshold, the first microprocessor 5 determines that the breathing test process starts, and the first microprocessor 5 reads the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 through the I / O port. The first microprocessor 5 drives the first Bluetooth module 7 to send an acquisition instruction to the second Bluetooth module 8; the second microprocessor 6 obtains the data received by the second Bluetooth module 8, receives the acquisition instruction signal sent by the first microprocessor 5, and the second microprocessor 6 starts timing. The second microprocessor 6 starts to read the second air pressure sensor 4, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21. The data of the second temperature and humidity sensor 20 is synchronized with the internal data collection of the gas mask 2; the first microprocessor 5 drives the first Bluetooth module 7 to send the breathing data of the first air pressure sensor 3, the first temperature and humidity sensor 19, the carbon dioxide sensor 21 and other gas mask 2 to the second Bluetooth module 8, and the second microprocessor 6 obtains the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 through the second Bluetooth module 8; the second microprocessor 6 calculates the difference between the first air pressure sensor 3 and the second air pressure sensor 4 to obtain the internal and external pressure difference data of the gas mask 2; the second microprocessor 6 analyzes the rising and falling trends of the pressure data based on the collected internal and external pressure difference data of the gas mask 2, and when it reaches the benchmark The detection data before the threshold rises monotonically, and when it reaches the reference threshold, it is considered that the inhalation stage is transferred to the exhalation stage; when the detection data before the reference threshold decreases monotonically and reaches the reference threshold, it is considered that the exhalation stage is transferred to the inhalation stage, and the user's breathing cycle T can be obtained. The second microprocessor 6 calculates the breathing frequency according to the breathing cycle; the second microprocessor 6 writes the real-time change data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 inside the gas mask 2, the ambient air pressure and temperature and humidity data, the respiratory pressure difference data, the respiratory cycle and respiratory frequency data into the storage module 22; when the data of the first air pressure sensor 3 exceeds the minimum exhalation setting threshold, the first microprocessor 5 determines that the breathing test process is over;The first microprocessor 5 stops collecting data and sends instructions to the second microprocessor 6, the second microprocessor 6 stops collecting data, the second microprocessor 6 stops timing, and writes the breathing test duration into the storage module 22; the second microprocessor 6 can send the breathing data to the USB interface 15 through the serial port conversion module 14, and can send the breathing data to the PC through the USB interface 15 for the tester to analyze and study the breathing parameters.;

[0029] When the tester uses the gas mask breathing parameter detection device, directly wear the test mask mode: The tester installs the internal data acquisition cavity 16 in the water-blocking cover 18 of the gas mask 2 according to the requirements of the specification; the data receiving cavity 17 is installed on the clamp of the gas mask 1, and the modules in the internal data acquisition cavity 16 and the data receiving cavity 17 of the gas mask 1 are turned on through the first button module 23 and the second button module 24. The tester wears the gas mask 2 to breathe at different intensities; the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 obtain the pressure, temperature and humidity, and carbon dioxide breathing data inside the mask, and the first microprocessor 5 reads the pressure data of the first air pressure sensor 3. When the data of the first air pressure sensor 3 exceeds the minimum exhalation setting threshold, the first microprocessor 5 determines The breathing test process starts, the first microprocessor 5 reads the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 through the I / O port, and the first microprocessor 5 drives the first Bluetooth module 7 to send an acquisition instruction to the second Bluetooth module 8; the second microprocessor 6 obtains the data received by the second Bluetooth module 8, receives the acquisition instruction signal sent by the first microprocessor 5, and the second microprocessor 6 starts timing. The second microprocessor 6 starts to read the data of the second air pressure sensor 4 and the second temperature and humidity sensor 20, and keeps synchronization with the internal data acquisition of the gas mask 2; the first microprocessor 5 drives the first Bluetooth module 7 to send the first air pressure sensor 3, the first temperature and humidity sensor 19, the carbon dioxide sensor 21 and other gas mask data The breathing data in the mask 2 is sent to the second Bluetooth module 8, and the second microprocessor 6 obtains the data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 through the second Bluetooth module 8; the second microprocessor 6 calculates the difference between the first air pressure sensor 3 and the second air pressure sensor 4 to obtain the pressure difference data inside and outside the gas mask 2; the second microprocessor 6 analyzes the rising and falling trends of the pressure data based on the collected pressure difference data inside and outside the gas mask 2. When it rises monotonically before the reference threshold and reaches the reference threshold, it is considered that the inhalation stage is turned into the exhalation stage; when the detection data before the reference threshold decreases monotonically and reaches the reference threshold, it is considered that the exhalation stage is turned into the inhalation stage, and the user's breathing cycle T can be obtained, and the second The microprocessor 6 calculates the respiratory rate according to the respiratory cycle; the second microprocessor 6 writes the real-time change data of the first air pressure sensor 3, the first temperature and humidity sensor 19, and the carbon dioxide sensor 21 inside the gas mask 2, the ambient air pressure and temperature and humidity data, the respiratory pressure difference data, the respiratory cycle and respiratory rate data into the storage module 22; when the data of the first air pressure sensor 3 exceeds the minimum exhalation setting threshold, the first microprocessor 5 determines that the respiratory test process is over; the first microprocessor 5 stops collecting data and sends an instruction to the second microprocessor 6, the second microprocessor 6 stops data collection, the second microprocessor 6 stops timing, and writes the respiratory test duration into the storage module 22 for the tester to retrieve and analyze the respiratory process.

[0030] 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. A breathing parameter detection device for a gas mask, comprising a gas mask (1) provided with a fixing belt, characterized in that: The gas mask (1) is provided with a gas mask (2) on the front, a water-blocking cover (18) is provided inside the gas mask (2), an internal data acquisition system (25) is provided inside the water-blocking cover (18), a data receiving system (26) is provided on a side clamp of the gas mask (2), and the internal data acquisition system (25) and the data receiving system (26) are interconnected via wireless communication.

2. A breathing parameter detection device for a gas mask according to claim 1, characterized in that: The internal data acquisition system (25) comprises an internal data acquisition cavity (16), wherein a first air pressure sensor (3), a first microprocessor (5), a first Bluetooth module (7), a first power module (9), a first battery (11), a first temperature and humidity sensor (19) and a carbon dioxide sensor (21) are arranged in the internal data acquisition cavity (16), and a charging interface (13) and a first key module (23) are arranged on the upper side of the outer side of the internal data acquisition cavity (16), the first power module (9) comprises a plurality of voltage conversion chips, and the first battery (11) is a rechargeable polymer lithium battery with a built-in charge and discharge protection board.

3. A breathing parameter detection device for a gas mask according to claim 2, characterized in that: The internal data collection cavity (16) comprises an upper cover on the front side, a sensor data collection port is arranged on the inner side of the upper cover, a first air pressure sensor (3), a first temperature and humidity sensor (19), and a carbon dioxide sensor (21) are mounted on the sensor data collection port, and a bracket structure is arranged on the back side to be fixed to the mask.

4. A breathing parameter detection device for a gas mask according to claim 2, characterized in that: The first air pressure sensor (3), the first Bluetooth module (7), the first temperature and humidity sensor (19), the carbon dioxide sensor (21), and the first key module (23) are electrically connected to the first microprocessor (5); the first battery (11) is electrically connected to the input port of the first power module (9); the output port of the first power module (9) is electrically connected to the first air pressure sensor (3), the first Bluetooth module (7), the first temperature and humidity sensor (19), the carbon dioxide sensor (21), and the power port of the first microprocessor (5) to provide power; and the charging interface (13) is electrically connected to the first battery (11).

5. A breathing parameter detection device for a gas mask according to claim 1, characterized in that: The data receiving system (26) comprises a data receiving cavity (17), the outer side of the data receiving cavity (17) is provided with a USB interface (15) and a second key module (24), and the inside of the data receiving cavity (17) is provided with a second air pressure sensor (4), a second microprocessor (6), a second Bluetooth module (8), a second power module (10), a second battery (12), a serial port conversion module (14), a second temperature and humidity sensor (20) and a storage module (22); the second power module (10) contains a plurality of voltage conversion chips, and the second battery (12) is a rechargeable polymer lithium battery with a built-in charge and discharge protection board.

6. A breathing parameter detection device for a gas mask according to claim 5, characterized in that: The data receiving cavity (17) has an upper cover on the front side, a sensor data collection port is provided on the inner side of the upper cover, the second air pressure sensor (4) and the second temperature and humidity sensor (20) are mounted on the sensor data collection port, and a buckle is provided on the back side of the data receiving cavity (17) for fixing to the gas mask (2).

7. A breathing parameter detection device for a gas mask according to claim 5, characterized in that: The second air pressure sensor (4), the second Bluetooth module (8), the serial port conversion module (14), the second temperature and humidity sensor (20), the storage module (22), and the second key module (24) are electrically connected to the second microprocessor (6); the second battery (12) is electrically connected to the input port of the second power module (10); the output port of the second power module (10) is electrically connected to the second air pressure sensor (4), the second Bluetooth module (8), the serial port conversion module (14), the second temperature and humidity sensor (20), the storage module (22), and the power port of the second microprocessor (6) to provide power; the serial port conversion module (14) is electrically connected to the USB interface (15); and the power port of the USB interface (15) is electrically connected to the second battery (12).

8. A breathing parameter detection device for a gas mask according to claim 1, characterized in that: The internal data acquisition system (25) and the data receiving system (26) are wirelessly interconnected via a first Bluetooth module (7) and a second Bluetooth module (8) provided in their respective cavities.

9. A breathing parameter detection device for a gas mask according to claim 1, characterized in that: The first key module (23) provided in the internal data acquisition cavity (16) is set as a power-on key, and the second key module (24) provided in the data receiving cavity (17) is set as a power-off key.

10. The method for operating a breathing parameter detection device 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 first air pressure sensor (3), the second air pressure sensor (4), the first microprocessor (5), the second microprocessor (6), the first Bluetooth module (7), the second Bluetooth module (8), the first temperature and humidity sensor (19), the second temperature and humidity sensor (20), the carbon dioxide sensor (21), and the storage module (22), and enable the interrupts of the first microprocessor (5) and the second microprocessor (6); Step 2: The first microprocessor (5) reads the pressure data of the first air pressure sensor (3). When the data of the first air pressure sensor (3) exceeds the minimum exhalation setting threshold, the first microprocessor (5) determines that the breathing test process starts. The first microprocessor (5) reads the data of the first air pressure sensor (3), the first temperature and humidity sensor (19), and the carbon dioxide sensor (21). The first microprocessor (5) sends a collection instruction to the second microprocessor (6) via the first Bluetooth module (7); Step 3: the second microprocessor (6) receives the collection instruction signal sent by the first microprocessor (5), the second microprocessor (6) starts timing, and the second microprocessor (6) starts reading data from the second air pressure sensor (4) and the second temperature and humidity sensor (20); Step 4: The first microprocessor (5) drives the first Bluetooth module (7) to send the data of the first air pressure sensor (3), the first temperature and humidity sensor (19), and the carbon dioxide sensor (21) to the second Bluetooth module (8), and the second microprocessor (6) obtains the data of the first air pressure sensor (3), the first temperature and humidity sensor (19), and the carbon dioxide sensor (21) through the second Bluetooth module (8); Step 5: The second microprocessor (6) calculates the difference between the first air pressure sensor (3) and the second air pressure sensor (4) to obtain the pressure difference data between the inside and outside of the gas mask (2); Step 6: The second microprocessor (6) analyzes the rising and falling trends of the pressure data based on the collected pressure difference data between the inside and outside of the gas mask (2). When the pressure data rises monotonically before reaching a reference threshold and reaches the reference threshold, it is considered that the inhalation stage has turned into the exhalation stage; when the detection data falls monotonically before the reference threshold and reaches the reference threshold, it is considered that the exhalation stage has turned into the inhalation stage, and the user's breathing cycle T can be obtained. The second microprocessor (6) calculates the breathing frequency based on the breathing cycle; Step 7: The second microprocessor (6) writes the breathing data of the first air pressure sensor (3), the first temperature and humidity sensor (19), and the carbon dioxide sensor (21) inside the mask, the ambient air pressure and temperature and humidity data, the breathing pressure difference data, and the breathing cycle and breathing frequency data obtained during the breathing test period into the storage module (22); Step 8: When the data of the first air pressure sensor (3) exceeds the minimum exhalation setting threshold, the first microprocessor (5) determines that the breathing test process is over; Step 9: the first microprocessor (5) stops collecting data and sends an instruction to the second microprocessor (6), the second microprocessor (6) stops collecting data, the second microprocessor (6) stops timing, and writes the breathing test duration into the storage module (22); Step 10: The second microprocessor (6) can send the breathing data to the USB interface (15) through the serial port conversion module (14), and can send the breathing data to the PC through the USB interface (15); Step 11: Repeat steps 2 to 10.

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