Respiration monitoring equipment and respiration monitoring method

Abstract

The invention relates to the technical field of respiration monitoring, and provides respiration monitoring equipment and a respiration monitoring method.The respiration monitoring equipment comprises a mask body, a monitoring module and a communication module, the monitoring module and the communication module are arranged on the mask body, and the mask body is provided with a respiration cavity; the monitoring module comprises a carbon dioxide monitoring module, an oxygen monitoring module and a breathing flow monitoring module, the carbon dioxide monitoring module, the oxygen monitoring module and the breathing flow monitoring module are arranged on the mask body at intervals and communicate with the breathing cavity, and the mask body is in wireless connection or wired connection with the upper computer through the communication module. The respiration monitoring equipment can achieve high-precision real-time monitoring of multiple respiration gas parameters, has the advantages of being small in size, light in weight, high in integration degree, easy to carry and the like, can be suitable for various clinical monitoring scenes, facilitates improvement of detection accuracy and timeliness, and is suitable for popularization and application. And wide application of portable monitoring equipment in the field of motion cardiopulmonary function detection can be promoted.

Description

Technical Field

[0001] The present invention belongs to the technical field of respiratory monitoring, and in particular relates to a respiratory monitoring device and a respiratory monitoring method. Background Art

[0002] In recent years, the application of cardiopulmonary function testing equipment in the field of medical treatment and health management has become increasingly widespread. Among them, traditional lung ventilation measurement mainly focuses on lung capacity and ventilation resistance, which is difficult to accurately screen alveolar lesions. By measuring respiratory gas parameters (such as carbon dioxide and oxygen concentration), the lung gas exchange function can be more comprehensively evaluated. Therefore, respiratory monitoring equipment is currently receiving great attention from technicians in this field. However, existing respiratory monitoring equipment usually only monitors a single respiratory gas parameter, which cannot meet the real-time monitoring requirements of multiple important physiological parameters and lacks accuracy. In addition, existing equipment also has the characteristics of large size and weight, poor integration and portability, insufficient real-time performance, and high maintenance costs, which limits the application of current respiratory monitoring equipment, especially portable respiratory monitoring equipment, in the field of sports cardiopulmonary function testing. Summary of the invention

[0003] The purpose of the present invention is to overcome at least one of the deficiencies of the above-mentioned prior art, and to provide a respiratory monitoring device and a respiratory monitoring method. The respiratory monitoring device can realize high-precision real-time monitoring of multiple respiratory gas parameters, and has the characteristics of small size, light weight, high integration, and easy portability. It can be applied to various clinical monitoring scenarios, help to improve the accuracy and timeliness of cardiopulmonary function testing, and promote the widespread application of portable respiratory monitoring equipment in the field of sports cardiopulmonary function testing.

[0004] The technical solution of the present invention is: a respiratory monitoring device, comprising a mask body, a monitoring module and a communication module, wherein the monitoring module and the communication module are arranged on the mask body, the mask body has a breathing cavity, the monitoring module comprises a carbon dioxide monitoring module, an oxygen monitoring module and a respiratory flow monitoring module, the carbon dioxide monitoring module, the oxygen monitoring module and the respiratory flow monitoring module are arranged at intervals on the mask body and are respectively connected to the breathing cavity, and the mask body is wirelessly connected or wired to a host computer through the communication module; When the respiratory monitoring device is used to monitor the user's respiration, the carbon dioxide monitoring module detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested. The respiratory monitoring device transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be tested to the host computer through the communication module.

[0005] As a further improvement of the present technical solution, the mask body includes a main body and a first mounting shell, the first mounting shell is hollow in the middle, and the first mounting shell is arranged on the first side of the main body to form a first receiving chamber with the main body, the carbon dioxide monitoring module includes a carbon dioxide sensor and a circuit board, the carbon dioxide sensor is connected to the circuit board and are both arranged in the first receiving chamber, the first side of the main body is provided with a first ventilation hole, and the carbon dioxide sensor is connected to the breathing cavity through the first ventilation hole.

[0006] As a further improvement of the present technical solution, the carbon dioxide monitoring module also includes a first fixing member arranged in the first containing chamber, the first fixing member is provided with a first fixing groove and a first gas channel connecting the first fixing groove and the first vent hole, and the carbon dioxide sensor is arranged in the first fixing groove.

[0007] As a further improvement of the present technical solution, the mask body includes a main body and a second mounting shell, the second mounting shell is hollow in the middle, and the second mounting shell is arranged on the second side of the main body to form a second accommodating chamber with the main body, the oxygen monitoring module includes an oxygen sensor and a circuit board, the oxygen sensor is connected to the circuit board and both are arranged in the second accommodating chamber, a second vent is provided on the second side of the main body, and the oxygen sensor is connected to the breathing cavity through the second vent.

[0008] As a further improvement of the present technical solution, the oxygen monitoring module also includes a second fixing member arranged in the second containing chamber, the second fixing member is provided with a second fixing groove and a second gas channel connecting the second fixing groove and the second vent hole, and the oxygen sensor is arranged in the second fixing groove.

[0009] As a further improvement of the present technical solution, a third ventilation hole connected to the breathing cavity is provided in the middle of the mask body, and the respiratory flow monitoring module includes a respiratory flow monitor, which is provided in the middle of the mask body and connected to the third ventilation hole, and the respiratory flow monitor is a turbine flowmeter or a differential pressure flowmeter.

[0010] As a further improvement of the present technical solution, the host computer includes a transmission module, a data processing module and a display module, and the transmission module is wirelessly connected or wiredly connected to the communication module.

[0011] As a further improvement of the present technical solution, the respiratory monitoring device also includes a power supply module, the power supply module includes a lithium battery, and the lithium battery is electrically connected to the monitoring module and the communication module.

[0012] As a further improvement of the present technical solution, the monitoring module further includes a circuit board, a microcontroller, a high-precision signal amplifier and a filter, and the microcontroller, the high-precision signal amplifier and the filter are arranged on the circuit board.

[0013] The present invention also provides a respiratory monitoring method for the respiratory monitoring device described in any one of the above, the respiratory monitoring method comprising the following steps: Acquire the gas to be tested that flows into the monitoring module through the mask body according to a preset time period, wherein the gas to be tested is the gas exhaled by the user of the respiratory monitoring device; The carbon dioxide monitoring module detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested; The respiratory monitoring device transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be measured to the host computer through the communication module to realize the monitoring of the gas to be measured.

[0014] The present invention provides a respiratory monitoring device and a respiratory monitoring method. The respiratory monitoring device includes a mask body, a monitoring module and a communication module. The monitoring module and the communication module are arranged on the mask body. The mask body has a breathing cavity. The monitoring module includes a carbon dioxide monitoring module, an oxygen monitoring module and a respiratory flow monitoring module. The carbon dioxide monitoring module, the oxygen monitoring module and the respiratory flow monitoring module are respectively used to realize high-precision real-time monitoring of multiple respiratory gas parameters such as carbon dioxide, oxygen and respiratory flow. In addition, the carbon dioxide monitoring module, the oxygen monitoring module and the respiratory flow monitoring module are arranged at intervals on the mask body, so that the respiratory monitoring device has the characteristics of small size, light weight, high integration, easy to carry, etc., so that it can be applied to various clinical monitoring scenarios, which is helpful to improve the accuracy and timeliness of cardiopulmonary function detection, and promote the wide application of portable respiratory monitoring equipment in the field of sports cardiopulmonary function detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a stereoscopic diagram of a respiratory monitoring device provided by an embodiment of the present invention; Figure 2 is a principle block diagram of a respiratory monitoring device provided by an embodiment of the present invention; Figure 3 is an exploded diagram of a respiratory monitoring device provided by an embodiment of the present invention; Figure 4 is a circuit schematic diagram of a respiratory monitoring device provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of the user interface of the host computer in the respiratory monitoring device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0019] In addition, in the embodiments of the present invention, if there are terms indicating orientation or positional relationships such as "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., they are based on the orientation or positional relationships or conventional placement states or usage states shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present invention will not be described separately.

[0021] The present invention provides a respiratory monitoring device. Figures 1 to 5 The respiratory monitoring device 10 includes a mask body 1, a monitoring module 2 and a communication module 3. The monitoring module 2 and the communication module 1 are arranged on the mask body 1. The mask body 1 has a breathing cavity. The breathing cavity can be formed by the flexible bending of the mask body 1, and the breathing cavity can be used for the user to breathe and contain the gas to be measured generated by the user's breathing. The monitoring module 2 includes a carbon dioxide monitoring module 21, an oxygen monitoring module 22 and a respiratory flow monitoring module 23. The carbon dioxide monitoring module 21, the oxygen monitoring module 22 and the respiratory flow monitoring module 23 are arranged at intervals on the mask body 1 and are respectively connected to the breathing cavity. The mask body 1 is wirelessly connected or wired to the host computer 5 through the communication module 3. When the respiratory monitoring device 10 is used to monitor the user's respiration, the carbon dioxide monitoring module 21 detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module 22 detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module 23 detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested. The respiratory monitoring device 10 transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be tested to the host computer 5 through the communication module 3, thereby respectively realizing high-precision real-time monitoring of carbon dioxide, oxygen and respiratory flow; and, since the carbon dioxide monitoring module 21, the oxygen monitoring module 22 and the respiratory flow monitoring module 23 in the respiratory monitoring device 10 are spaced apart from the mask body 1, the respiratory monitoring device 10 has the characteristics of small size, light weight, high integration, easy to carry, etc., so that the respiratory monitoring device 10 can be applied to various clinical monitoring scenarios, which helps to improve the accuracy and timeliness of cardiopulmonary function testing, and promotes the wide application of portable respiratory monitoring devices 10 in the field of sports cardiopulmonary function testing.

[0022] As a preferred embodiment, the respiratory monitoring device 10 is a portable respiratory mask, that is, the respiratory monitoring device 10 is an integrated portable respiratory mask structure. This arrangement greatly increases the integration and structural compactness of the respiratory monitoring device 10, reduces the volume of the respiratory monitoring device 10, and meets the user's demand for portable use. It is suitable for various scenarios such as home, sports, and portable medical monitoring. While improving the user's wearing comfort, it ensures the accuracy of the monitoring data, thereby improving the usability of the respiratory monitoring device 10.

[0023] For the mask body 1, see Figure 1 and Figure 3 Optionally, the mask body 1 may include a main body 11 and a first mounting shell 12 and a second mounting shell 13 respectively arranged on both sides of the main body 11. The main body 11 is used as a breathing mask for the user to wear, and the first mounting shell 12 and the second mounting shell 13 are used to accommodate sensors for monitoring breathing parameters (such as a carbon dioxide sensor 211, an oxygen sensor 221) and circuit boards, etc., which are not only very convenient for disassembly and replacement, but also avoid too many parts being directly arranged on the main body 11, thereby avoiding affecting the fit between the main body 11 and the user.

[0024] Optionally, the body 11 may be a flexible soft surface member, thereby improving wearing comfort. In some embodiments, the material of the mask body 1 may be medical grade silicone, thermoplastic elastomer (TPE), polyurethane, elastic fabric, etc.

[0025] In a specific implementation, the main body 11 can be made of medical-grade soft silicone, and its thickness can be designed to be between 3 and 5 mm. This way, it can have good elasticity and softness, can effectively adapt to the face shapes of different users, and ensure the sealing and comfort of the main body 11.

[0026] Preferably, the size design of the body 11 can be adjusted according to the width and height of the face to provide the best fit. Specifically, the length of the body 11 can be 120 to 150 mm, the width can be 80 to 100 mm, and the height can be designed to be 40 to 60 mm according to the setting requirements of the monitoring module 2 and the gas channel. In addition, the mouth and nose of the body 11 can be reserved with a circular opening for ventilation, and the diameter can be 50 mm to ensure smooth airflow.

[0027] In order to ensure the sealing of the body 11, the edge of the body 11 may be provided with a fitting structure 14 to ensure that the body 11 fits the user's face, improve the user's comfort and reduce gas leakage. Specifically, the fitting structure 14 may be a double-layer sealing structure. Specifically, the fitting structure 14 may include a plurality of support members (such as support convex points or support convex strips, etc.) arranged on the edge of the body 11 to form a multi-point support, thereby enhancing the fit of the body 11, reducing air leakage, and thus improving the monitoring accuracy.

[0028] For the first mounting shell 12 and the second mounting shell 13, the first mounting shell 12 and the second mounting shell 13 can be used as a protective layer to provide support and protection. Optionally, the first mounting shell 12 and the second mounting shell 13 can be made of thermoplastic plastics such as high-density polyethylene (HDPE) or polypropylene (PP), mainly used to encapsulate one side of the entire respiratory mask body 1, provide physical structural support, firmly install internal components, and ensure the integrity of the shape and structure of the mask body 1 when worn. At the same time, the first mounting shell 12 and the second mounting shell 13 can also protect the internal circuit module and components from physical damage, such as wear, impact or pollution, extend the service life of the mask body 1, and maintain the performance of the mask body 1 to ensure its reliability in clinical applications.

[0029] In some embodiments, the mask body 1 can be connected to an adjustable headband rope, and the headband rope can be designed with a soft and adjustable nylon material to make it more comfortable to wear. In addition, the headband rope can also adopt an X-shaped cross headband and a side buckle structure design to facilitate the wearer to quickly adjust the tightness. The design of the multi-point support structure and the adjustable cross headband enhances the fit of the body 11, so that the body 11 can be more firmly attached to the face, reducing the relative displacement between the body 11 and the face during the movement process, preventing problems such as poor airtightness and low stability caused by wearing too loosely, and adapting to different head shapes and personal comfort requirements.

[0030] For monitoring module 2, see Figures 1 to 4 Optionally, the mask body 1 may include a body 11 and a first mounting shell 12, the first mounting shell 12 is hollow in the middle, and the first mounting shell 12 is arranged on the first side of the body 11, forming a first accommodation chamber with the body 11, the carbon dioxide monitoring module 21 may include a carbon dioxide sensor 211 and a circuit board 24, the carbon dioxide sensor 211 is connected to the circuit board 24 and both are arranged in the first accommodation chamber, the first side of the body 11 is provided with a first vent, and the carbon dioxide sensor 211 is connected to the breathing cavity through the first vent. After the user puts on the mask body 1, the breathed gas passes through the breathing cavity and the first vent into the detection end of the carbon dioxide sensor 211, so that the carbon dioxide parameters can be monitored when the user breathes.

[0031] For the carbon dioxide sensor 211, the carbon dioxide sensor 211 can be a Sifang Optoelectronics end-tidal ETCO2 sensor (product model CM2201), which can achieve accurate measurement of the end-tidal CO2 concentration. The embodiment of the present invention focuses on the measurement of end-tidal carbon dioxide (EtCO2), which is of great significance for evaluating arterial blood carbon dioxide (PaCO2). The working principle of the Sifang Optoelectronics end-tidal ETCO2 sensor is based on the infrared light absorption method, which determines the concentration of carbon dioxide by monitoring the degree of infrared light absorption at a specific wavelength (4.26 μm). According to the Lambert-Beer Law, the concentration of the gas can be obtained by measuring the change in light intensity passing through the gas. The detection range of the Sifang Optoelectronics end-tidal ETCO2 sensor is 0 to 150 mmHg, and the resolution is 0.1 mmHg, which can ensure that the accuracy requirements of respiratory monitoring are met.

[0032] Optionally, the carbon dioxide monitoring module 21 may further include a first fixing member 212 disposed in the first accommodation chamber, the first fixing member 212 being provided with a first fixing groove and a first gas channel connecting the first fixing groove and the first vent hole, and the carbon dioxide sensor 211 being disposed in the first fixing groove, thereby accommodating and fixing the carbon dioxide sensor 211. After the user puts on the mask body 1, the breathed gas passes through the breathing cavity, the first vent hole, and the first gas channel into the detection end of the carbon dioxide sensor 211, thereby enabling the monitoring of the carbon dioxide concentration when the user breathes.

[0033] Furthermore, the carbon dioxide monitoring module 21 may also include a conversion module 213 connected to the carbon dioxide sensor 211 to ensure stable data transmission. The carbon dioxide monitoring module 21 has a real-time measurement function, can monitor the carbon dioxide concentration in real time during the breathing process, has a high data update frequency, and converts the current signal into a digital signal through an ADC for subsequent processing.

[0034] Optionally, the mask body 1 may include a body 11 and a second mounting shell 13, the second mounting shell 13 is hollow in the middle, and the second mounting shell 13 is arranged on the second side of the body 11 (which may be the side opposite to the first side), and forms a second accommodation chamber with the body 11, the oxygen monitoring module 22 includes an oxygen sensor 221 and a circuit board 24, the oxygen sensor 221 is connected to the circuit board 24 and both are arranged in the second accommodation chamber, the second side of the body 11 is provided with a second vent, and the oxygen sensor 221 is connected to the breathing cavity through the second vent. After the user puts on the mask body 1, the breathed gas passes through the breathing cavity and the second vent into the detection end of the oxygen sensor 221, so that the oxygen concentration can be monitored when the user breathes.

[0035] As for the oxygen sensor 221, the oxygen sensor 221 can be an electrochemical oxygen sensor, which adopts the principle of electrochemical reaction and uses the working electrode to detect the oxygen concentration. The oxygen sensor 221 converts the oxygen concentration into a current signal based on the reduction reaction of oxygen molecules on the electrode surface. Its working principle is that when oxygen passes through the diffusion layer of the oxygen sensor 221 and reaches the electrode, a reduction reaction occurs, generating a current signal proportional to the oxygen concentration. The Gravity electrochemical oxygen sensor 221 has a real-time measurement function. It consists of a signal acquisition module (circuit board 24) and an oxygen sensor 221. It can monitor the oxygen concentration in real time during breathing, has a high data update frequency, and converts the current signal into a digital signal through an ADC for subsequent processing.

[0036] Optionally, the oxygen monitoring module 22 may further include a second fixing member 222 disposed in the second accommodation chamber, the second fixing member 222 being provided with a second fixing groove and a second gas channel connecting the second fixing groove and the second vent hole, and the oxygen sensor 221 being disposed in the second fixing groove, thereby accommodating and fixing the oxygen sensor 221. After the user puts on the mask body 1, the breathed gas passes through the breathing cavity, the second vent hole, and the second gas channel into the detection end of the oxygen sensor 221, thereby enabling monitoring of the oxygen concentration when the user breathes.

[0037] For the first fixing member 212 and the second fixing member 222, the first fixing member 212 and the second fixing member 222 can be embedded in various sensors (such as the carbon dioxide sensor 211, etc.), and the first and second gas channels, power wiring channels or wiring channels connected to the various sensors can be designed to help realize the collection of respiratory parameters by each sensor. Specifically, the first fixing member 212 and the second fixing member 222 can be made of thermoplastic plastics such as high-density polyethylene (HDPE) or polypropylene (PP), aiming to provide good strength, durability and chemical stability. The selection of this material ensures the safety and comfort of the respiratory monitoring device 10 during use. A plurality of fixing grooves can be provided in the first fixing member 212 and the second fixing member 222, and the fixing grooves are used to fix the sensor and the battery, while leaving the first and second gas channels for the gas path to pass through, thereby achieving smooth flow of gas.

[0038] In actual use, the first fixing member 212 is used to fix the carbon dioxide sensor 211, and the second fixing member 222 is used to fix the oxygen sensor 221 and the lithium battery 41 for power supply. The first fixing member 212 and the second fixing member 222 can be provided with a gas tube such as a rubber tube with a diameter of 5mm and a thickness of 1mm. The gas tube passes through the first and second gas channels and is connected to the carbon dioxide sensor 211 and the oxygen sensor 221 to ensure that the gas smoothly enters the sensor for detection. At the same time, the first and second gas channels also play a role in fixing the gas tube to prevent relative displacement between the gas path and the mask body 1, thereby ensuring the stability of the structure. In addition, the first fixing member 212 and the second fixing member 222 can also leave a power cord interface and a power wiring channel to facilitate the electrical connection between the power module 4 and the carbon dioxide sensor 211, the oxygen sensor 221, etc. Furthermore, the dimensions of the first fixing member 212 and the second fixing member 222 can be designed to be: about 80mm to 100mm (8cm to 10cm) in length, about 60mm to 80mm (8cm to 10cm) in width, and about 35mm to 50mm (3.5cm to 5cm) in thickness. This ensures sufficient space for the carbon dioxide sensor 211, the oxygen sensor 221, the lithium battery 41, the gas tube, and the power wiring to be fixed to the first fixing member 212 and the second fixing member 222, while ensuring the compactness and stability of the equipment.

[0039] In practical applications, a first fixing groove matching the carbon dioxide sensor 211 can be reserved in the first fixing member 212, and a suitable space can be reserved at the gas inlet and outlet to facilitate the connection of the gas passage, and a wiring channel can also be reserved at the power line interface to ensure the normal power supply of the sensor. The second fixing member 222 can also reserve a second fixing groove matching the battery of the oxygen sensor 221 and the 5V lithium battery 41 to ensure the normal power supply of the lithium battery 41. The power wiring in the first fixing member 212, the second fixing member 222 and the power module 4 can be connected to the circuit board 24 through the power wiring channel to provide drive for the circuit board 24 and ensure that the monitoring module 2 and the power module 4 are powered normally.

[0040] Optionally, the edges of the first fixing member 212 and the second fixing member 222 may be provided with a buckle structure, so that the first fixing member 212 and the second fixing member 222 can be conveniently encapsulated in the mask body 1 (for example, the first mounting shell 12 and the second mounting shell 13), and the user can open and replace the battery and other parts when necessary, which is convenient for maintenance. Specifically, the buckle structure can be a matching buckle and a slot, etc.

[0041] For the respiratory flow monitoring module 23, optionally, a third ventilation hole connected to the breathing cavity can be provided in the middle of the mask body 1. The respiratory flow monitoring module 23 includes a respiratory flow monitor 231. The respiratory flow monitor 231 is provided in the middle of the main body 11 and connected to the third ventilation hole. After the user puts on the mask body 1, the breath gas passes through the breathing cavity and the third ventilation hole and enters the detection end of the respiratory flow monitor 231, thereby enabling the monitoring of the respiratory flow parameters of the user when breathing.

[0042] Specifically, a threaded hole with a diameter of 5 mm may be provided on the hole wall of the third ventilation hole for fixing the respiratory flow monitor 231 .

[0043] In order to accurately measure the gas flow, provide real-time monitoring of the respiratory flow, and reduce the device size to meet clinical needs, the respiratory flow monitor 231 can be a flow monitor such as a turbine flowmeter or a differential pressure flowmeter.

[0044] As a first optional implementation of the respiratory flow monitor 231, the flow monitor 231 can use a turbine flow sensor, which measures flow based on the rotation principle of turbine blades. Its working principle is that when the gas flows through the turbine flow sensor, the gas drives the turbine blades to rotate, and the speed sensor monitors the rotation speed of the turbine in real time and calculates the gas flow based on the speed. The turbine flow sensor has a high stability function, is not affected by pressure and humidity, provides stable flow measurement, and can maintain high repeatability under different environmental conditions. The output signal of the turbine sensor is connected to the microcontroller 25 to realize real-time monitoring of the signal, and the signal is processed and calculated by the microcontroller 25 to output flow monitoring data.

[0045] As a second optional implementation of the respiratory flow monitor 231, a differential pressure flowmeter can be used instead of a turbine flowmeter. The differential pressure flowmeter is used to measure the gas flow rate, and is combined with a throttling device (such as an orifice plate, a nozzle) to measure the pressure difference of the gas before and after the throttling device. Its working principle is that when the gas flows through the throttling device, the change in flow rate causes the pressure difference before and after to be generated, and the flow rate of the gas can be calculated by measuring the pressure difference. The differential pressure flowmeter converts the measured weak voltage signal into a digital signal. The differential pressure flowmeter has the function of flow calculation, realizes real-time calculation of flow through pressure difference, supports different breathing modes, and has high sensitivity and low hysteresis characteristics to ensure the accuracy of measurement. The output of the differential pressure flowmeter can be connected to an analog-to-digital converter, and its differential input mode is used to improve the accuracy of the measurement, and data is transmitted with the microcontroller 25 through the I2C interface, and the flow monitoring data is calculated and displayed in real time. When in use, the gas to be tested exchanged by the user's mouth and nose breathing first enters the differential pressure flowmeter; the gas branch in the differential pressure flowmeter can be roughly Y-shaped, and the gas to be tested can enter the first gas channel from one port of the gas branch and pass through the carbon dioxide sensor 211; before, after or at the same time, the gas to be tested enters the second gas channel from another port of the gas branch and is connected to the oxygen sensor 221, thereby realizing the reading of carbon dioxide concentration, oxygen concentration, and differential pressure flow.

[0046] Preferably, the respiratory monitoring device 10 may also include a micro vacuum pump 232. The embodiment of the present invention uses the micro vacuum pump 232 to enhance the airflow to adapt to different respiratory conditions, and the monitoring accuracy can also be improved in the case of low ventilation. Specifically, the respiratory monitoring device 10 may also include a 5V to 12V boost circuit, combined with an optical coupling isolation relay 233, its COM end is connected to the I / O port of the microcontroller 25, and the high and low levels of the I / O port of the microcontroller 25 are configured, thereby controlling the conduction of the relay COM end and the NC and NO ends, connecting the power supply of the micro vacuum pump 232 to the relay COM end, and sharing the ground with the microcontroller 25, thereby realizing the control of the switch state of the micro vacuum pump 232 by configuring the high and low levels of the I / O port of the microcontroller 25 through a predetermined program. By configuring the working state of the micro vacuum pump 232, the purpose of adjusting the airflow intensity can be achieved.

[0047] Optionally, the monitoring module 2 may also include a circuit board 24, a microcontroller 25, a high-precision signal amplifier and a filter. The microcontroller 25, the high-precision signal amplifier and the filter may be arranged on the circuit board 24. The circuit board 24 and the microcontroller 25 are used to realize efficient physiological signal monitoring and processing. The high-precision signal amplifier and the filter are used for signal processing, reducing other external interference and improving the accuracy of monitoring.

[0048] As for the circuit board 24, it can be understood that the circuit board 24 can be attached to the mask body 1, and the wiring connecting the circuit board 24 connects the sensors and the battery through the wiring channels in the first and second fixing members (221, 222), so as to collect various breathing parameters and communicate with the host computer 5 through the communication module 3. In addition, the circuit board 24 in the carbon dioxide monitoring module 21 and the oxygen monitoring module 22 can be set as one, and can be arbitrarily set in the first installation shell 12, the second installation shell 13 or other positions, as long as the circuit connection can be achieved.

[0049] Optionally, the circuit board 24 may be a flexible circuit board 24 made of a flexible material such as a polyimide film. The use of a flexible material such as a polyimide film can make the circuit board 24 flexible and high temperature resistant, which helps to optimize the space inside the mask body 1 and ensure the stability and reliability of the circuit. Key components such as a microcontroller 25, a high-precision signal amplifier, a filter, a Bluetooth module (of the communication module 3), a carbon dioxide sensor 211, a protocol converter, an oxygen sensor 221, a turbine flowmeter (or a differential pressure flowmeter) and the like can all be arranged on the circuit board 24 to form an integrated physiological signal acquisition system.

[0050] In a specific implementation, the size of the circuit board 24 may be 100 mm×80 mm, and the thickness may be 0.2 mm.

[0051] As for the microcontroller 25, the microcontroller 25 is used to realize the control of the respiratory monitoring device 10. Optionally, in some embodiments of the present invention, the microcontroller 25 can select an STM32 microcontroller, which has high performance and rich I / O interfaces, and by referring to the data manual, some embodiments of the present invention design a minimum system schematic diagram, and the microcontroller 25 includes an STM32 chip, a USB interface, a slide switch, a 3.3V voltage conversion circuit, a power indicator light, a status indicator light, a reset circuit, and a program download / debugging interface, etc., thereby realizing real-time collection and processing of physiological signals and ensuring stable data transmission.

[0052] It is understandable that the above-mentioned specific configuration of the monitoring module 2 is only a preferred embodiment of the present invention, and the present invention does not impose any specific restrictions on the monitoring module 2, as long as the monitoring module 2 can realize the monitoring of multiple respiratory parameters. For example, the various components of the monitoring module 2 can be arranged in the same installation shell, which is more convenient for disassembly and assembly; for another example, the monitoring module 2 can also include a monitor capable of monitoring other respiratory parameters (such as respiratory frequency, respiratory ratio or pulse oxygen saturation, etc.).

[0053] For communication module 3, see Figures 1 to 4, may include a wireless communication module such as a Bluetooth module to facilitate connection to the host computer 5 or an external device to realize data transmission or control signal transmission.

[0054] Specifically, the wireless communication module can use a Bluetooth module, which uses the UART serial port protocol for data transmission, establishes a connection with the host computer 5 (external devices such as mobile phones, computers, etc.) through Bluetooth wireless signals, and supports two-way data transmission. Of course, the present invention is not limited to this, and the present invention can also consider using a Wi-Fi module or other wireless communication protocols (such as Zigbee, LoRa, etc.) for data transmission to increase the data transmission distance and speed, which is suitable for different usage scenarios.

[0055] The following takes the Bluetooth module as an example to explain the setting of the communication module 3: First, the ports of the Bluetooth module and the microcontroller 25 can be synchronized. Specifically, first, it can be ensured that the Bluetooth module and the microcontroller 25 set the same baud rate before the communication starts; when the device is started, the microcontroller 25 initializes the serial port settings, including data bits, stop bits and check bits, etc. These parameters are consistent with the settings of the Bluetooth module; define a clear data frame format, define the frame header and frame tail for the transmitted data, and facilitate the identification of the data in the host computer 5. The communication structure between the Bluetooth module and the host computer 5 can be divided into data flow and control flow. Further, in terms of data flow, the Bluetooth module establishes serial port communication with the microcontroller 25, and adopts a serial communication protocol (such as UART, etc.). The respiratory parameters (such as carbon dioxide concentration, oxygen concentration and flow) collected in real time by the lower computer (respiratory monitoring device 10) are formatted into data packets, and the data packet structure usually includes data type, parameter value, unit, timestamp and checksum. These data packets are sent to the host computer 5 through the Bluetooth module at a specific frequency (such as once every 100 milliseconds). The host computer 5 (such as a PC or mobile device) receives these data packets through a Bluetooth adapter (such as the transmission module described below), updates the user interface after parsing, displays various respiratory parameters in real time, and can be graphically displayed to support clinical monitoring and health management. In terms of control flow, the host computer 5 sends control instructions to the lower computer through the Bluetooth module through a written program to manage the working status of the device. The control instructions may include calibration and zeroing of each sensor (adjusting the sensor baseline, clearing background noise), starting / stopping data acquisition, and turning on / off the vacuum pump 232. The host computer 5 formats the instructions into a specific data packet and sends it to the lower computer through the Bluetooth module. After receiving the instruction, the microcontroller 25 of the lower computer parses the data packet and performs the corresponding operation according to the instruction. This two-way communication mechanism not only ensures the real-time transmission and feedback of data, but also supports the remote control of the upper computer 5 to the lower computer, thereby improving the intelligence of the device and the convenience of user operation. In addition, the use of Bluetooth communication technology reduces the complexity of wiring, improves the portability of the system, and is suitable for a variety of usage scenarios. The module has the function of real-time communication and can support real-time data exchange with external devices, which is convenient for users to monitor and control. At the same time, the module has pairing and detection modes to ensure a secure connection, which is convenient for users to perform real-time monitoring and data debugging through a computer.

[0056] In some embodiments, see Figures 1 to 4 The respiratory monitoring device 10 may further include a power module 4 , which may include a lithium battery 41 , which is electrically connected to the monitoring module 2 and the communication module 3 to supply power to the monitoring module 2 and the communication module 3 .

[0057] Specifically, some embodiments of the present invention can use a 5V lithium battery 41 for power supply. The 5V lithium battery 41 can directly provide power for the carbon dioxide sensor 211, and use a low-noise linear regulator to reduce the 5V voltage to 3.3V, thereby providing a stable power supply for the STM32 microcontroller 25 and the oxygen sensor 221, and the respiratory flow monitor 231, thereby ensuring the normal operation of the entire device and reducing the impact of power supply noise on signal acquisition.

[0058] For host computer 5, see Figures 1 to 5 The host computer 5 may include a transmission module, a data processing module and a display module. The transmission module may be wirelessly or wiredly connected to the communication module 3 to realize data transmission or control signal transmission. The data processing module is used to process and record data signals, or to enable data to be displayed in the form of text, graphics, tables or animations through the display module. It is understandable that the respiratory monitoring device 10 can be divided into two parts: the host computer 5 and the lower computer (respiratory monitoring device 10). Please refer to Figure 2 , Figure 2 The structure and communication process between the upper computer 5 and the lower computer are shown in the figure. The lower computer first detects the gas exchanged by the user's breathing through various sensors, then converts it into a digital signal, and transmits it to the upper computer 5 through the communication module 3. The upper computer 5 receives the data from the lower computer through the transmission module, and displays the data through the user interface or transmits it to an external device.

[0059] For the interface of the host computer 5 used for real-time monitoring data, see Figures 1 to 5, this interface is designed to achieve real-time monitoring and display of respiratory parameters (including carbon dioxide concentration, oxygen concentration and flow) so that users can obtain relevant health information in a timely manner. In practical applications, the host computer 5 can realize effective communication with the STM32 microcontroller 25 through Keil5 and STM32CubeMX compiler programs. First, the STM32 microcontroller 25 reads and decodes the monitoring data of carbon dioxide concentration, oxygen concentration and flow through a serial port protocol (such as UART, I2C), and converts these monitoring data into concentration or flow data signals. The microcontroller 25 uses a Bluetooth module (here taking the Bluetooth module as an example) to perform wireless data transmission through a serial communication protocol (such as UART), ensuring that the data can be transmitted to the host computer 5 in real time without physical restrictions. In order to ensure the stability and accuracy of data transmission, the setting of the Bluetooth module is crucial. First, the ports of the Bluetooth module and the microcontroller 25 can be synchronized. Specifically, first ensure that the Bluetooth module and the microcontroller 25 set the same baud rate before the communication starts; when the device starts, the microcontroller 25 initializes the serial port settings, including data bits, stop bits and check bits, etc., which are consistent with the settings of the Bluetooth module; define a clear data frame format, define the frame header and frame tail for the transmitted data, so as to facilitate the identification of the data in the host computer 5. During the module connection process, the Bluetooth module needs to be set to detectable (visible) mode first so that the host computer 5 can search for the lower computer. This process is implemented through the serial port communication of the microcontroller 25 to ensure that the module enters the pairing state immediately after it is turned on. The user needs to insert the Bluetooth adapter (transmission module) into the USB port of the computer and ensure that the Bluetooth module driver has been correctly installed and enabled. Next, open the Bluetooth module setting interface on the host computer 5, and the user can search and find the paired Bluetooth module, and click Connect to establish a data channel. This process not only ensures the wireless connection between the microcontroller 25 and the host computer 5, but also ensures the security of data transmission. Moreover, in the development of the interface of the host computer 5, Visual Studio 2022 can be used to write a program and set the baud rate to maintain a consistent communication rate with the Bluetooth module. The program communicates with the Bluetooth module by specifying the correct serial port, and a serial communication protocol (such as UART) can be used. The lower computer collects the respiratory parameters in real time (each data frame contains information such as carbon dioxide concentration, oxygen concentration, and flow), and formats these respiratory parameters into data packets. The data packet structure usually includes data type, parameter value, unit, timestamp, and checksum. These data packets are sent to the host computer 5 through the Bluetooth module at a specific frequency (such as once every 100 milliseconds). The host computer 5 (such as a PC or mobile device, etc.) receives these data packets through a Bluetooth adapter, updates the user interface after parsing, displays various respiratory parameters in real time, and can be displayed graphically to support clinical monitoring and health management.The host computer 5 sends control instructions to the lower computer through the written program and the Bluetooth module to manage the working status of the device. In order to improve the user experience, the host computer 5 can also be provided with an image update module for realizing the function of updating the image in real time. For example, the user interface can be refreshed every 100 milliseconds so that the user can view the latest monitoring data in time. Through the graphical display, the user can intuitively understand the changing trend of the respiratory parameters, thereby providing valuable information for health management. In addition, the interface of the host computer 5 can also be configured with control buttons and memory function modules for the monitoring module 2 (such as the carbon dioxide sensor 211 and the oxygen sensor 221, etc.). The control instructions can include calibration and zeroing of the monitoring module 2 (adjusting the sensor baseline, clearing the background noise), starting / stopping data acquisition, and turning on / off the micro vacuum pump 232, etc., and support querying historical data. This function is realized by storing the received data in the local database. The user can view the past monitoring records at any time, so as to conduct long-term health tracking and analysis. The host computer 5 can format the instruction into a specific data packet and send it to the lower computer through the Bluetooth module. After receiving the instruction, the microcontroller 25 of the lower computer parses the data packet and performs the corresponding operation according to the instruction. This two-way communication mechanism not only ensures the real-time transmission and feedback of data, but also supports the remote control of the host computer 5 to the slave computer, which improves the intelligence of the equipment and the user's convenience of operation. In addition, the Bluetooth communication technology is adopted to reduce the complexity of wiring, improve the portability of the system, and is suitable for a variety of usage scenarios. The respiratory monitoring device 10 has the function of real-time communication, can support real-time data exchange with the host computer 5 or external devices, and is convenient for users to monitor and control. At the same time, the module has a pairing and detection mode to ensure a safe connection, which is convenient for users to perform real-time monitoring and data debugging through the host computer 5 or external devices.

[0060] See also Figure 5 , Figure 5 This is an example schematic diagram of the interface of the host computer 5, and this example diagram is obtained by using a breathing simulator to generate standard breathing gas and connecting the mask body 1 for data monitoring. Specifically, the interface of the host computer 5 may include: connection settings (including providing serial port configuration options, including selecting the correct serial port number, baud rate and other communication parameters to ensure that a correct connection is established with the Bluetooth module, etc.), real-time waveform display (including displaying the sensor data read in real time, drawing and updating the carbon dioxide concentration, oxygen concentration and flow rate and the standard curve of the breathing simulator, etc.), control buttons (including providing control buttons for controlling each sensor and the vacuum pump 232, such as zeroing, stopping, reading and other operations. The user can perform these operations by clicking the corresponding button) and historical data query (including displaying past monitoring records. The user can select a specific time period or condition and retrieve relevant monitoring records from the data stored in the local database, etc.), etc.

[0061] In a specific application, the fitting structure 14 may also include a skin-friendly component provided on the outer edge of the body 11, and the skin-friendly component is used to fit the user's facial skin, thereby effectively preventing the inflow of external gas or the outflow of the gas to be measured, thereby improving the monitoring accuracy, and the skin-friendly component is detachably connected to the body 11, which is convenient for replacement. In addition, the gas channel in the mask body 1 (the gas flow channel formed by the breathing cavity, the first vent, the second vent, the hole wall of the third vent, and the first and second channels), especially the interface between the first and second gas channels, may be provided with a sealing component to ensure the sealing effect and improve the monitoring accuracy.

[0062] In order to further ensure the accuracy of monitoring, the respiratory monitoring device 10 may also be provided with an air pressure monitoring device, which is used to determine whether the air pressure in the respiratory monitoring device 10 is within the normal range of the respiratory state. Therefore, when the seal of the respiratory monitoring device 10 or the gas channel is damaged or aged, and a leak occurs, the air pressure monitoring device can promptly determine that the current air pressure is not within the normal range of the respiratory state, and then send an alarm signal to the microcontroller 25, so as to facilitate the subsequent timely investigation, maintenance, and replacement of the respiratory monitoring device 10. In addition, the respiratory monitoring device 10 may also be provided with a self-detection device for regular automatic detection of the seal and detection accuracy of the respiratory monitoring device 10. For example, the self-detection device can regularly discharge self-test gas within a preset time, and the oxygen and carbon dioxide concentrations, exhaust flow rate, etc. in the self-test gas are preset values. The monitoring module 2 obtains data for monitoring the oxygen and carbon dioxide concentrations and exhaust flow rate, and the host computer 5 compares these data to see whether they are within the preset range, so as to achieve self-detection.

[0063] In specific applications, each module in the monitoring module 2 (such as the carbon dioxide monitoring module 21, etc.) can be provided with a detachable and replaceable disassembly structure so as to be customized according to user needs. For example, the monitoring module 2 can also provide different gas sensors to meet different monitoring needs, such as the early detection needs of specific diseases.

[0064] In specific applications, for the gas path design of some embodiments of the present invention, a guide structure can be provided in the first and second gas channels to introduce other gas flows to guide the gas to be tested, such as setting a micro pump or an optocoupler isolation relay 233.

[0065] In specific applications, the host computer 5 can be integrated with the health management platform to provide more comprehensive health monitoring services. Through data analysis and mining, it can provide users with personalized health advice and monitoring reports, further expanding its application scope.

[0066] It is understandable that, in addition to being used for respiratory monitoring, the respiratory monitoring device 10 can also be extended to other fields such as sports training monitoring, health management for the elderly, and home monitoring for patients with chronic diseases, providing targeted health management solutions for different user groups. In addition, the respiratory monitoring device 10 can be integrated with other physiological parameter monitoring devices (such as heart rate monitoring and body temperature monitoring) to form a comprehensive health monitoring platform to enhance the functionality and market competitiveness of the device.

[0067] It is understandable that carbon dioxide and oxygen, as important gases for maintaining life activities, ensure the smooth progress of cell metabolism. Cells produce carbon dioxide during aerobic metabolism, which diffuses into tissue capillaries through cells and is then transported to the right side of the heart by venous circulation. The right ventricle pumps venous blood to the lungs, and carbon dioxide diffuses on the blood-gas barrier of alveoli, interstitial fluid and pulmonary capillary endothelial cells. This process follows Fick's diffusion law. Therefore, the monitoring module 2 of the embodiment of the present invention focuses on real-time monitoring of the inhaled oxygen and the carbon dioxide concentration of the exhaled gas during breathing.

[0068] With respect to the measurement of gas volume and flow, the monitoring module 2 of the embodiment of the present invention has the following characteristics: (1) the measurement range and accuracy meet clinical standards; (2) the concentration data of a specific gas can be independently obtained in a mixed gas; (3) the cost is low and suitable for large-scale application; (4) the module has low impedance characteristics to reduce interference with airflow; (5) the dead space is small to ensure smooth gas flow; and (6) the module has a fast response capability to accurately obtain various respiratory parameters in a short time.

[0069] In some embodiments, the respiratory monitoring device 10 is intended to achieve efficient and comfortable respiratory parameter monitoring through its unique structure and material design. The respiratory monitoring device 10 adopts a four-layer structure, which is a mask body 1 of a soft mask body layer, a circuit board 24 as a physiological signal collection layer, a fixing layer, and a mounting shell layer. This design not only ensures the comfort and fit of the mask body 1, but also improves the accuracy and reliability of physiological signal collection. The design of the entire gas passage is as follows: the gas to be tested generated by the user's mouth and nose breathing first passes through the respiratory flow monitor 231 (such as a turbine flowmeter) in the middle; then the gas to be tested enters the first gas channel and passes through the carbon dioxide sensor 211; before, after or at the same time, the gas to be tested enters the oxygen sensor 221 from the other side along the second other channel. Since the gas path is simple and the distance is very short, the response time difference of each sensor can be ignored, thereby realizing the synchronous reading of flow, carbon dioxide concentration, oxygen concentration and pressure difference. In addition, the rubber tube for transmitting gas is firmly fixed in the first and second gas channels of the fixing layer, and there will be no relative displacement between the gas path and the mask body 1, which improves the stability of the device. Its advantage is that all sensor devices are integrated into the mask body 1, realizing the integration of the device, significantly shortening the gas path, reducing the complexity of the gas path, reducing the time difference of gas entering and leaving each device, improving the synchronization rate of each module collection, and also providing a guarantee for higher collection accuracy.

[0070] Moreover, the embodiment of the present invention may include two main parts, namely, a host computer 5 and a lower computer (respiratory monitoring device 10) when actually used. The lower computer is composed of a mask body 1, an air circuit, a monitoring module 2 (the module includes a carbon dioxide concentration detection module, an oxygen concentration detection module, and a flow detection module), a communication module 3, and a power supply module 4. The monitoring module 2 may integrate key components such as an STM32 microcontroller 25, a high-precision signal amplifier, a filter, a Sifang photoelectric carbon dioxide sensor 211, an RS232-TTL module, an electrochemical oxygen sensor 221, and a turbine flowmeter (or a differential pressure flowmeter). Specifically, the lower computer collects key respiratory parameters such as CO2 concentration, oxygen concentration, differential pressure, and flow rate in real time through the collaborative work of multiple sensors, and performs data processing and analysis on the host computer 5.

[0071] By using Keil5 and STM32CubeMX to compile the program, the host computer 5 can read important parameters such as carbon dioxide concentration, oxygen concentration, flow rate, etc. of the gas to be tested in real time. The Bluetooth module is connected to the STM32 microcontroller 25 to ensure that the data is accurately sent to the module and put it in visible mode. The user can pair it through the Bluetooth module settings of the computer and connect the Bluetooth adapter (transmission module) to realize data transmission. In addition, the host computer 5 is partially responsible for processing and displaying the data collected by the lower computer. Visual Studio 2022 can be used to design the user interface, set the baud rate, and match it with the correct serial port to read the sensor data in real time. The recognition and processing of the data frame ensure that the images of carbon dioxide concentration, oxygen concentration and flow rate are updated in real time on the user interface at a refresh rate of 100ms. At the same time, the host computer 5 also has a historical data query function, which improves the user experience and data analysis capabilities.

[0072] The lower computer is the core acquisition device, which integrates the mask body 1, the gas channel (the gas flow channel formed by the breathing cavity, the first vent, the second vent, the third vent wall, and the first and second channels), the monitoring module 2, the microcontroller 25, the communication module 3, the power module 4, etc., to ensure the synchronous acquisition of multiple parameters. The mask body 1 adopts a comfortable design to ensure the accuracy of data acquisition during wearing. The gas channel optimizes the gas flow path to ensure the accuracy and stability of sensor monitoring. A variety of high-precision sensors are used, including carbon dioxide sensors 211, oxygen sensors 221, turbine flowmeters (or differential pressure flowmeters), etc., and then the data is processed by signal amplifiers and filter circuits, and then integrated and transmitted by microcontrollers 25 to ensure the accuracy and stability of sensor monitoring. The upper computer 5 receives the data of the lower computer through the communication module 3, analyzes and processes the respiratory parameters in real time, and can display data waveforms and respiratory indicators, such as respiratory frequency and tidal volume. Through algorithm analysis, respiratory monitoring can quickly respond to clinical and motion monitoring needs and provide accurate diagnostic data. The respiratory monitoring device 10 is highly integrated, small and portable, and is suitable for home, sports and portable medical monitoring scenarios. Through low-power design, the device can run continuously for a long time, reduce maintenance frequency, and improve service life and practicality. It makes up for the lack of highly integrated and integrated high-sampling precision sports cardiopulmonary monitoring equipment in China.

[0073] The feasibility of the embodiment of the present invention has been verified through multiple experiments and simulations. Specifically, during the experimental simulation of the embodiment of the present invention, the air path is connected to the mask body 1 by cooperating with a breathing simulator (containing standard breathing gas), and waveform monitoring is performed. The flow waveform output by the breathing simulator is matched with the waveform collected by the turbine flowmeter, and the waveform time domain, frequency, and peak-to-peak value are basically consistent. After testing multiple samples, it is found that the respiratory monitoring device 10 of the embodiment of the present invention can stably collect parameters such as carbon dioxide concentration, oxygen concentration, flow rate, etc. in real time, and process and display data through the interface of the host computer 5. The experimental results show that the device can maintain good accuracy and response speed under various conditions, and the measurement errors are within the range of clinical requirements, ensuring the reliability of the data. In addition, the device performs well in actual use scenarios (such as home and sports monitoring), and the user feedback is good, showing the practical application value and potential of the system.

[0074] Moreover, the respiratory monitoring device 10 provided by the embodiment of the present invention can achieve the following technical effects: Multi-parameter high-precision monitoring: Traditional equipment can usually only measure a single or a few respiratory parameters, while the embodiments of the present invention realize real-time monitoring of multiple respiratory parameters such as carbon dioxide concentration, oxygen concentration, flow, etc., by integrating the carbon dioxide sensor 211, the electrochemical oxygen sensor 221, the turbine flowmeter, etc. in the same device, and providing a comprehensive respiratory condition analysis with high-precision collaborative work. This comprehensive monitoring provides rich and accurate data support for clinical diagnosis and health management, can better reflect the user's respiratory condition, and improve the accuracy and reliability of the data.

[0075] Improved integration and portability: The embodiment of the present invention integrates all sensors, data processing modules (including signal amplifiers and filters), communication modules 3, power modules 4, etc. into a portable respiratory mask body 1. Compared with traditional monitoring equipment, this system has the characteristics of miniaturization and compact structure. This compact design is not only convenient for users to use in various occasions, but also enhances the mobility and adaptability of the equipment. It is suitable for home, sports and portable medical monitoring scenarios, meets the needs of portable use, and at the same time, the design takes into account the comfort of wearing and facial fit to ensure the accuracy of monitoring data.

[0076] Improved real-time performance and response speed: The embodiment of the present invention uses high-precision sensors (such as carbon dioxide sensor 211, electrochemical oxygen sensor 221, turbine flowmeter) and high-speed data processing modules (such as signal amplifiers and filters) to ensure the synchronous collection and analysis of multiple parameters. The gas path design and data transmission method are optimized, which significantly improves the real-time performance and response speed of data compared with traditional monitoring systems to meet the needs of real-time monitoring and feedback in scenarios such as clinical emergency and motion monitoring, and can quickly provide accurate diagnostic data to help medical staff and users make timely decisions.

[0077] Reduce maintenance costs: By integrating the sensors and gas channels inside the mask body 1, the system complexity is simplified, the gas path length is shortened, and the difficulty of maintenance and calibration is reduced. Traditional equipment usually requires complex gas path design and regular maintenance, while the design of the embodiment of the present invention not only improves the stability and sampling synchronization of the system, but also significantly reduces the maintenance cost of the equipment, extends the service life of the equipment, and reduces the long-term use cost of the user.

[0078] Comfortable design: The structural design of the respiratory mask body 1 fully considers the wearing comfort and facial fit of the user, ensuring that it will not affect the user's normal breathing and activities during use, thereby improving the user's acceptance and usage experience. This comfortable design allows users to wear it for a long time, enhances the accuracy of monitoring data, and avoids measurement errors caused by wearing discomfort.

[0079] Integration of wireless communication module: The embodiment of the present invention integrates a communication module 3 (such as a Bluetooth module), which can conveniently transmit real-time monitoring data to the host computer 5 for processing and display, enhance the user's real-time access to data, and support historical query and analysis functions of data.

[0080] Development of user interaction interface: Through the design of the upper computer 5 interface, users can issue instructions to each sensor (such as calibration, zeroing, real-time monitoring data and querying historical records, etc.), and display relevant parameters and waveforms in real time. This function improves the user's control ability and usage experience of the device, improves the operability of the device, enables users to better understand their own health status, and helps to better meet clinical and personal health management needs.

[0081] An embodiment of the present invention also provides a health monitoring platform, which may include the above-mentioned respiratory monitoring device 10 and other physiological parameter monitoring devices such as heart rate monitoring devices and body temperature monitoring devices, thereby forming a comprehensive health monitoring platform to enhance the functionality and market competitiveness of the health monitoring platform.

[0082] The embodiment of the present invention further provides a respiratory monitoring method, which can be used in the above-mentioned respiratory monitoring device 10, and the method comprises the following steps: S1: Acquire the gas to be tested that flows into the monitoring module 2 through the mask body 1 according to a preset time period, where the gas to be tested is the gas exhaled by the user of the respiratory monitoring device 10; S2: The carbon dioxide monitoring module 21 detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module 22 detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module 23 detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested; S3: The respiratory monitoring device 10 transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be measured to the host computer 5 through the communication module 3 to realize the monitoring of the gas to be measured.

[0083] The embodiment of the present invention provides a respiratory monitoring device, the respiratory monitoring device 10 includes a mask body 1, a monitoring module 2 and a communication module 3, the monitoring module 2 and the communication module 1 are arranged in the mask body 1, and the mask body 1 has a breathing cavity. The monitoring module 2 includes a carbon dioxide monitoring module 21, an oxygen monitoring module 22 and a respiratory flow monitoring module 23, the carbon dioxide monitoring module 21, the oxygen monitoring module 22 and the respiratory flow monitoring module 23 are arranged at intervals in the mask body 1 and are respectively connected to the breathing cavity, and the mask body 1 is wirelessly connected or wired to the host computer 5 through the communication module 3. When the respiratory monitoring device 10 is used to monitor the user's respiration, the carbon dioxide monitoring module 21 detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module 22 detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module 23 detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested. The respiratory monitoring device 10 transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be tested to the host computer 5 through the communication module 3, thereby respectively being used to realize high-precision real-time monitoring of carbon dioxide, oxygen and respiratory flow; and, since the carbon dioxide monitoring module 21, the oxygen monitoring module 22 and the respiratory flow monitoring module 23 in the respiratory monitoring device 10 are spaced apart from the mask body 1, the respiratory monitoring device 10 has the characteristics of small size, light weight, high integration, and easy to carry, so that it can be applied to various clinical monitoring scenarios, which helps to improve the accuracy and timeliness of cardiopulmonary function testing, and promotes the wide application of portable respiratory monitoring devices 10 in the field of sports cardiopulmonary function testing.

[0084] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A respiratory monitoring device, characterized in that: The invention comprises a mask body, a monitoring module and a communication module, wherein the monitoring module and the communication module are arranged on the mask body, the mask body has a breathing cavity, the monitoring module comprises a carbon dioxide monitoring module, an oxygen monitoring module and a respiratory flow monitoring module, the carbon dioxide monitoring module, the oxygen monitoring module and the respiratory flow monitoring module are arranged at intervals on the mask body and are respectively connected to the breathing cavity, and the mask body is wirelessly connected or wiredly connected to a host computer through the communication module; When the respiratory monitoring device is used to monitor the user's respiration, the carbon dioxide monitoring module detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested. The respiratory monitoring device transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be tested to the host computer through the communication module.

2. The respiratory monitoring device according to claim 1, characterized in that The mask body includes a body and a first mounting shell, the first mounting shell is hollow in the middle, and the first mounting shell is arranged on the first side of the body to form a first receiving chamber with the body, the carbon dioxide monitoring module includes a carbon dioxide sensor and a circuit board, the carbon dioxide sensor is connected to the circuit board and both are arranged in the first receiving chamber, the first side of the body is provided with a first ventilation hole, and the carbon dioxide sensor is connected to the breathing cavity through the first ventilation hole.

3. The respiratory monitoring device according to claim 2, characterized in that The carbon dioxide monitoring module also includes a first fixing member arranged in the first containing chamber, the first fixing member is provided with a first fixing groove and a first gas channel connecting the first fixing groove and the first vent hole, and the carbon dioxide sensor is arranged in the first fixing groove.

4. The respiratory monitoring device according to claim 1, characterized in that The mask body includes a main body and a second mounting shell, the middle part of the second mounting shell is hollow, and the second mounting shell is arranged on the second side of the main body to form a second accommodating chamber with the main body, the oxygen monitoring module includes an oxygen sensor and a circuit board, the oxygen sensor is connected to the circuit board and both are arranged in the second accommodating chamber, the second side of the main body is provided with a second ventilation hole, and the oxygen sensor is connected to the breathing cavity through the second ventilation hole.

5. The respiratory monitoring device according to claim 4, characterized in that The oxygen monitoring module also includes a second fixing member disposed in the second containing chamber, the second fixing member is provided with a second fixing groove and a second gas channel connecting the second fixing groove and the second vent hole, and the oxygen sensor is disposed in the second fixing groove.

6. The respiratory monitoring device according to claim 1, characterized in that A third ventilation hole connected to the breathing cavity is provided in the middle of the mask body. The respiratory flow monitoring module includes a respiratory flow monitor. The respiratory flow monitor is provided in the middle of the mask body and connected to the third ventilation hole. The respiratory flow monitor is a turbine flowmeter or a differential pressure flowmeter.

7. The respiratory monitoring device according to any one of claims 1 to 6, characterized in that: The host computer includes a transmission module, a data processing module and a display module, and the transmission module is connected to the communication module.

8. The respiratory monitoring device according to any one of claims 1 to 6, characterized in that: The respiratory monitoring device also includes a power supply module, which includes a lithium battery. The lithium battery is electrically connected to the monitoring module and the communication module.

9. The respiratory monitoring device according to any one of claims 1 to 6, characterized in that: The monitoring module also includes a circuit board, a microcontroller, a high-precision signal amplifier and a filter, and the microcontroller, the high-precision signal amplifier and the filter are arranged on the circuit board.

10. A respiratory monitoring method for the respiratory monitoring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Acquire the gas to be tested that flows into the monitoring module through the mask body according to a preset time period, wherein the gas to be tested is the gas exhaled by the user of the respiratory monitoring device; The carbon dioxide monitoring module detects the carbon dioxide concentration of the gas to be tested according to a preset time period to obtain carbon dioxide concentration data in the gas to be tested, the oxygen monitoring module detects the oxygen concentration of the gas to be tested according to a preset time period to obtain oxygen concentration data in the gas to be tested, and the respiratory flow monitoring module detects the flow of the gas to be tested according to a preset time period to obtain flow data of the gas to be tested; The respiratory monitoring device transmits the carbon dioxide concentration data, oxygen concentration data and flow data of the gas to be measured to the host computer through the communication module to realize the monitoring of the gas to be measured.

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