Gas filtering mask and intelligent detecting and counting system

Abstract

The utility model discloses a gas filtering mask and an intelligent detection counting system, comprising a wind frame assembly, the wind frame assembly comprises a wind frame base, the wind frame base is provided with a wind frame valve cover, and the wind frame valve cover is detachably connected with the wind frame base in a threaded manner; the filtering assembly comprises a first filtering plate and a second filtering plate which are arranged in parallel; the mask body comprises a nose clamping strip, elastic hanging ropes, a first vent hole and a second vent hole, and the elastic hanging ropes are symmetrically arranged at the edges of the two opposite sides of the mask body; the intelligent detecting and counting system comprises a humidity sensor and a breathing frequency sampling module, the breathing frequency sampling module is composed of a signal processing module, an ADC converter, an MCU microprocessor, a display module and a power module, and through mutual cooperation of all the components, the breathing frequency sampling module can be accurately detected under the condition that good leakproofness is guaranteed in the mask. The intelligent detection counting system can still obtain normal respiration information of the human body. And the effects of high comfort, portability, simplicity in operation, low cost, high flexibility and high detection precision are achieved.

Description

Technical Field

[0001] The utility model relates to the field of respiratory frequency detection instruments, in particular to a gas filtering mask and an intelligent detection and counting system. Background Art

[0002] Respiratory rate detection instruments are important instruments for medical staff to diagnose the health status of patients. They belong to respiratory detection instruments in medical devices. Respiratory rate is an important indicator for medical staff to diagnose the health status of patients. Many sensors can be used to detect human respiratory rate, such as flexible pressure sensors, strain sensors and temperature sensors.

[0003] Flexible pressure and strain sensors measure the respiratory rate based on the periodic deformation of the chest or abdomen when the human body breathes, but this detection method has limitations. For example, during the onset of sleep apnea syndrome, there is no airflow from the mouth and nose, but there is still chest movement, which cannot be detected by flexible pressure or strain sensors. In addition, whether it is mouth breathing or nasal breathing, the chest will rise and fall, which cannot be distinguished by these two sensors. In addition, temperature sensors can detect the respiratory rate by detecting the periodic changes in the temperature of the respiratory gas, but when the ambient temperature is close to the temperature of the respiratory gas, detecting the respiratory rate will be a big challenge and cannot be detected correctly. At present, traditional respiratory detection is often performed in hospitals, relying on medical equipment and requiring the cooperation of professional technicians. It is expensive, complicated to operate, and cannot be measured anytime and anywhere. In addition, existing detection equipment cannot accurately detect while ensuring comfort.

[0004] Therefore, it is necessary to design a new wearable respiratory detection device that is comfortable, portable, easy to operate, low-cost, flexible and accurate. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the problem that the existing detection equipment in the above-mentioned and / or prior art cannot accurately detect while ensuring comfort, the present utility model is proposed.

[0007] Therefore, the technical problem to be solved by the utility model is to design a gas filtering mask.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a gas filtering mask, comprising:

[0009] As a preferred solution of the gas filtering mask described in the utility model, wherein: the wind frame assembly includes a wind frame base, a wind frame valve cover is arranged on the wind frame base, and the wind frame valve cover is detachably connected to the wind frame base by threads;

[0010] A filter assembly, comprising a first filter plate and a second filter plate, wherein a first gas separation membrane is disposed on the surface of the first filter plate, and a second gas separation membrane is disposed on the surface of the second filter plate, and the first filter plate and the second filter plate are arranged in opposite layouts and in parallel;

[0011] The mask body comprises a nose clip strip, an elastic hanging rope, a first ventilation hole and a second ventilation hole. The elastic hanging rope is symmetrically arranged at the edge positions of two opposite sides of the mask body.

[0012] As a preferred solution of the gas filtering mask described in the utility model, the outer diameter of the wind frame assembly is the same as the inner diameter of the first ventilation hole on the mask body.

[0013] As a preferred solution of the gas filtering mask described in the utility model, the surface of the wind frame base is arranged with a first air vent, the surface of the wind frame valve cover is arranged with multiple second air vents, and the center of the wind frame base is provided with a groove column protruding from the surface of the wind frame base.

[0014] As a preferred solution of the gas filter mask described in the utility model, the first filter plate is provided with a first air inlet and a first air outlet, and the second filter plate is provided with a second air inlet and a second air outlet.

[0015] As a preferred solution of the gas filtering mask described in the utility model, the first air inlet and the second air inlet are arranged oppositely and in parallel, the first air inlet and the second air outlet are arranged to overlap relatively, and the contours of the first filter plate and the second filter plate are completely consistent.

[0016] As a preferred solution of the gas filter mask described in the utility model, the first filter plate and the second filter plate are both provided with slots at the center positions, and the slots are sleeved with the slot columns.

[0017] The beneficial effects of the utility model are as follows: through the mutual cooperation between the filter component and the wind frame component, the user's breathing is not affected by the environment inside the mask under the condition of ensuring good airtightness, so that the user's breathing is in a normal state.

[0018] Given that only sensitive components are incomplete for the entire respiratory detection process. Sensitive components can only complete simple signal acquisition and cannot meet the requirements of intelligent respiratory monitoring. To accurately reflect the respiratory frequency, intelligent analysis of the respiratory signal is required. Traditional respiratory frequency calculation is to directly record the number of breaths manually. Traditional respiratory detection equipment cannot accurately detect the respiratory frequency while ensuring comfort, and manual calculation is prone to errors, resulting in inaccurate detection results of the number of breaths.

[0019] Therefore, the technical problem to be solved by the utility model is that an intelligent detection system is needed to collect signals, process and analyze the signals, and realize intelligent detection and display of human respiratory rate.

[0020] In order to solve the above technical problems, the utility model also provides the following technical solutions: an intelligent detection and counting system, including the gas filter mask, and,

[0021] As a preferred solution of the intelligent detection and counting system of the utility model, the humidity sensor includes an outer frame base, an outer frame top cover, a control switch, a humidity sensing element and a display screen, the outer frame top cover is detachably connected to the outer frame base, and an integrated circuit slot and a humidity sensing element base are arranged on the inner surface of the outer frame base;

[0022] The outer contour of the humidity sensor is the same as the diameter of the second vent hole, and the humidity sensor can be placed in the second vent hole;

[0023] A respiratory rate sampling module, which is composed of a signal processing module, an ADC converter, an MCU microprocessor, a display module and a power module, and each module is electrically connected;

[0024] The respiratory rate sampling module is placed in the integrated circuit slot.

[0025] As a preferred solution of the intelligent detection and counting system of the utility model, the humidity sensor element is composed of a substrate, a flexible sensitive film and a cross-pointing conductive electrode, and the flexible sensitive film and the cross-pointing conductive electrode are electrically connected.

[0026] As a preferred solution of the intelligent detection and counting system of the utility model, wherein: the humidity sensor element and the respiratory rate sampling module and the display screen and the control switch are electrically connected;

[0027] The humidity sensor element changes its resistance according to the humidity change, and transmits the current signal to the respiratory frequency sampling module;

[0028] The current signal presented by the resistance change is transmitted to the signal processing module.

[0029] As a preferred solution of the intelligent detection and counting system of the utility model, wherein: the substrate is a polyimide (PI) substrate, the fork finger guide electrode is a silver fork finger electrode, and the flexible sensitive film is a MXene / poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT:PSS) based moisture sensitive film;

[0030] The power module is directly and electrically connected to the humidity sensor;

[0031] The power supply module is directly electrically connected to the signal processing module, the signal processing module is composed of a signal amplifier and a filter, the humidity sensor and the signal processing module are transmitted through a current signal, and the respiratory signal is processed by the signal amplifier and the filter and then transmitted to the ADC converter through an electrical connection;

[0032] The power module is electrically connected to the ADC converter, the ADC converter is electrically connected to the signal processing module and the MCU microprocessor, and the ADC converter converts the current signal into a digital signal and transmits it to the MCU microprocessor through an electrical connection;

[0033] The power module is electrically connected to the MCU microprocessor, and the MCU microprocessor is composed of a data processing and counting module;

[0034] The MCU microprocessor is directly electrically connected to the display module, and the MCU microprocessor can also be connected to a computer or mobile device via Bluetooth wireless transmission;

[0035] The power module is directly and electrically connected to the display module.

[0036] The beneficial effects of the utility model are as follows: through the mutual cooperation between the intelligent detection system and a gas filtering mask, the signal can be collected, and the signal can be processed and analyzed to achieve the effect of intelligent detection and display of human respiratory frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0038] Figure 1 A schematic diagram of the structure of a gas filter mask according to an embodiment of the utility model;

[0039] Figure 2 A schematic diagram of the structure of a gas filter mask according to an embodiment of the utility model;

[0040] Figure 3 A schematic diagram of the structure of an air frame assembly and a filter assembly of a gas filter mask according to an embodiment of the utility model;

[0041] Figure 4 A schematic diagram of the structure of an intelligent detection and counting system according to an embodiment of the present utility model;

[0042] Figure 5 A structural schematic diagram of a humidity sensor element of an intelligent detection and counting system according to an embodiment of the utility model;

[0043] Figure 6 A schematic diagram of the logical structure of an intelligent detection and counting system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0047] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] Example 1

[0049] Reference Figure 1-6The present embodiment provides a gas filter mask, including a wind frame assembly 100, which can be understood as an outer surrounding structure for carrying filtering related equipment, including a wind frame base 101, on which a wind frame valve cover 102 is arranged, and the two structural members are detachably connected by threads;

[0050] The mask body 300 includes a nose clip 301 for fitting the nose, an elastic hanging rope 302, and a first vent 303 and a second vent 304. The elastic hanging rope 302 is symmetrically arranged at the edges of the mask body 300 on both sides, and is adjustable to reduce the sense of pressure on the ears when the mask is worn; the first vent 303 and the second vent 304 are respectively used to install the wind frame assembly 100 and other respiratory detection and counting devices. The inner diameter of the first vent 303 is the same as the outer diameter of the wind frame assembly 100, and the fit is tightly connected, so that the air inside and outside the mask is almost only circulated through the first vent 303 and the wind frame assembly 100 to ensure the accuracy of the measurement.

[0051] The wind frame base 101 and the wind frame valve cover 102 form a load-bearing internal space for placing the filter assembly 200. The filter assembly 200 includes a first filter plate 201 and a second filter plate 202. A first gas separation membrane 203 is arranged on the surface of the first filter plate 201. The function of the first gas separation membrane 203 is to allow oxygen to pass through during inhalation. A second gas separation membrane 204 is arranged on the surface of the second filter plate 202. The function of the second gas separation membrane 204 is to effectively discharge carbon dioxide during exhalation, thereby improving the air permeability of the mask, improving the comfort of wearing the mask, and improving the accuracy of respiratory frequency detection. The first filter plate 201 and the second filter plate 202 are arranged oppositely and in parallel to each other, forming a complete set of filtering systems.

[0052] A first air permeable port 101a is arranged on the surface of the air frame base 101, and a plurality of second air permeable ports 102a are arranged on the surface of the air frame valve cover 102. External air enters the filter assembly 200 inside the air frame assembly 100 through the second air permeable ports 102a, and oxygen passes through the first gas separation membrane 203 in the first filter plate 201, passes through the first air permeable port 101a, and enters the inside of the mask; carbon dioxide in the exhaled gas inside the mask passes through the first air permeable port 101a, enters the inside of the air frame assembly 100, passes through the second gas separation membrane 204 in the second filter plate 202, passes through the second air permeable port 102a, and is discharged to the external environment of the mask, thereby changing the gas composition in the dead space inside the mask, thereby improving the air permeability of the mask, thereby increasing the accuracy of respiratory rate detection;

[0053] In detail, the first filter plate 201 is provided with a first air inlet 201a and a first air outlet 201b, which are arranged separately without overlapping, and the second filter plate 202 is provided with a second air inlet 202a and a second air outlet 202b, which are arranged separately without overlapping, and the projection outer contours of the four air outlets, the first air inlet 201a and the first air outlet 201b, the second air inlet 202a and the second air outlet 202b, are nearly overlapped, and the positions and layouts are opposite, the first air inlet 201a is directly opposite to the second air outlet 202b, and the second air inlet 202a and the second air outlet 202b are directly opposite to each other. The second air inlet 202a is directly opposite to the first air outlet 201b to ensure that, when inhaling, oxygen passes through the first air inlet 201a and the first gas separation membrane 203. Although the first air outlet 201b can also allow air to pass through, when it reaches the second air outlet opposite to it, due to the concentration difference, carbon dioxide will not pass through and smoothly enter the inside of the mask through the second air outlet 202b, so the inhaled oxygen increases; while when exhaling, most of the exhaled gas is carbon dioxide and water vapor, and carbon dioxide is unidirectionally discharged through the second air inlet 202a and the second gas separation membrane 204, and then smoothly exhaled out of the mask through the first air outlet 201b;

[0054] In detail, a slot column 101b protruding from the surface of the wind frame base 101 is provided at the center of the wind frame base 101, and a slot hole 205 is opened at the center of the first filter plate 201 and the second filter plate 202. The inner diameter of the slot hole 205 is equal to the diameter of the slot column 101b, and the slot hole 205 and the slot column 101b are sleeved, which are used to fix the first filter plate 201 and the second filter plate 202 so that they do not produce relative displacement, so as to ensure good air tightness inside the mask.

[0055] Example 2

[0056] Reference Figure 1-6 , is the second embodiment of the utility model, this embodiment provides an intelligent detection and counting system, this embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the humidity sensor 400 is mainly composed of an outer frame base 401, an outer frame top cover 402, a control switch 403, a humidity sensing element 404 and a display screen 405. The outer frame top cover 402 and the outer frame base 401 are detachably connected. The outer frame top cover 402 and the outer frame base 401 act as carriers for carrying other parts, and are also important connecting and fixing bodies between the humidity sensor 400 and the mask body 300. The outer contour of the humidity sensor 400 is the same as the caliber of the second vent 304. The humidity sensor 400 can be placed in the second vent 304. The control switch 403 is mainly used to control the opening and closing state of the entire intelligent detection and counting system.

[0057] Furthermore, a sandwich space is formed between the outer frame top cover 402 and the outer frame base 401, and the humidity sensor element 404 and the respiratory rate sampling module 500 are located in the sandwich between the outer frame base 401 and the outer frame top cover 402. The respiratory rate sampling module 500 is a component responsible for feedback and measurement in the entire system. The humidity sensor element 404 is coordinated with the humidity sensor element base 407 disposed on the inner surface of the outer frame base 401, and the gas contacts the humidity sensor element 404 through the humidity sensor element base 407; the integrated circuit slot 406 is also located in the sandwich space between the outer frame top cover 402 and the outer frame base 401, and is used to fix the respiratory rate sampling module 500;

[0058] In detail, the humidity sensing element 404 is composed of a substrate 404a, a flexible sensitive film 404c and a cross-finger conductive electrode 404b, the flexible sensitive film 404c and the cross-finger conductive electrode 404b are electrically connected, the substrate 404a is a polyimide (PI) substrate, the cross-finger conductive electrode 404b is a silver cross-finger electrode, and the flexible sensitive film 404c is a MXene / poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT:PSS) based humidity sensing film; PEDOT:PSS / MXene composite nanomaterial is used as a humidity sensitive element, the surface of MXene nanomaterial has rich functional groups and is hydrophilic, and PEDOT:PSS is a material that is sensitive to humidity and temperature, and has high flexibility, stretchability and skin affinity. The synergistic effect of the two further improves the sensing performance of the sensor; Ti3C2Tx MXene powder was dispersed in N,N-dimethylformamide (DMF) and ultrasonicated for 1h, and an equal volume of PEDOT:PSS dispersion was added, mixed and ultrasonicated for 20min to obtain a liquid phase of PEDOT:PSS and MXene nanocomposites. Silver interdigital electrodes were screen-printed on a flexible polyimide substrate, with a spacing of 1mm and a size of 1cm×1.5cm.

[0059] The temperature of the heating table was set to 80°C. After the temperature stabilized, the flexible substrate printed with silver interdigital electrodes was placed on the heating table. 1 ml of PEDOT:PSS / MXene dispersion was sucked with a pipette and dripped on the silver cross electrodes. The solvent was slowly evaporated by heating to form a PEDOT:PSS / MXene composite humidity-sensitive film, thereby obtaining a PEDOT:PSS / MXene nanocomposite flexible humidity sensor.

[0060] In detail, the respiratory rate sampling module 500 is the element responsible for feedback and measurement in the whole system, and is composed of a signal processing module 500a, an ADC converter 500b, an MCU microprocessor 500c, a display module 500d and a power module 500e; the humidity sensor element 404 changes its own resistance according to the humidity change, and transmits the current signal to the signal processing module 500a, the signal processing module 500a is composed of a signal amplifier 500a-1 and a filter 500a-2, and the MCU microprocessor 500c is composed of a data processing module 500c-1 and a counting module 500c-2; when the user wears a mask, the humidity sensor 400 will collect The breathing signal is output as a current signal, and the required signal is strengthened by the signal amplifier 500a-1. The filter 500a-2 receives the amplified current signal and further performs filtering processing. The signal processing module 500a transmits the current signal to the ADC converter 500b through an electrical connection. The ADC converter 500b converts the current signal into a digital signal, and then transmits it to the MCU microprocessor 500c through an electrical connection. The MCU microprocessor 500c performs data processing 500c-1, and then transmits it to the display module 500d through an electrical connection via the counting module 500c-2. The specific value presented by the display module 500d reflects the breathing frequency.

[0061] When exhaling, the humidity increases, and charge transfer occurs between water molecules and the MXene / PEDOT:PSS composite material in the flexible sensitive film 404c, resulting in a decrease in intercepted carriers and an increase in resistance; when inhaling, the humidity decreases, and the resistance decreases accordingly. Therefore, during the breathing process, the resistance of the sensor changes periodically, and presents a regular waveform as the breathing process progresses. The resistance increases during exhalation and is at the peak, and the resistance decreases during inhalation and is at the trough. The MCU microprocessor 500c can also transmit the breathing data converted from the resistance value to the computer or mobile device 500c-3 via Bluetooth wireless. The computer or mobile device 500c-3 can display the specific curve of the change of resistance value over time during the breathing process, thereby reflecting the breathing frequency and breathing depth. Medical staff can distinguish between mouth breathing and nasal breathing based on the difference in waveforms, and determine whether there are abnormal conditions such as apnea, which is convenient for medical staff to diagnose and analyze related diseases of patients.

[0062] During the operation of the entire intelligent detection and counting system, the power module 500e supplies power to the humidity sensor 400, the signal processing module 500a, the ADC converter 500b, the MCU microprocessor 500c, and the display module 500d respectively.

[0063] Example 3

[0064] Reference Figure 1-6, which is the third embodiment of the utility model, is based on the previous embodiment, and is different from the previous embodiment in that: the mask body 300, through the first filter plate 201 and the second filter plate 202 in the wind frame assembly 100 and the filter assembly 200, achieves the effect of improving the gas in the mask, oxygen enters through the first filter plate 201, and carbon dioxide is exhaled through the second filter plate 202, which ensures the comfort inside the mask, increases the accuracy of breathing detection, and simulates the air humidity during normal breathing in a confined space to the greatest extent, so as to ensure the accuracy of the humidity data transmitted to the detection device. Cooperate with the intelligent detection and counting system, collect the normal breathing humidity while ensuring airtightness, and the water molecules convert the humidity information into a current signal through the humidity sensor 400, and then process the collected current signal through the signal processing module 500a, the ADC converter 500b, and the MCU microprocessor 500c.

[0065] Furthermore, the collected data can be simultaneously received and processed by the display module 500d or the computer or mobile device 500c-3, providing comprehensive respiratory rate parameter monitoring; by analyzing the data presented by the computer or mobile device 500c-3, the respiratory state of the subject can be more accurately determined, and abnormal conditions can be discovered and handled in a timely manner. This monitoring method improves the reliability and accuracy of detection, while reducing costs and operational difficulty.

[0066] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc., mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of an element may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such Modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structures described herein that perform the functions, and not only structural equivalence but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0067] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0068] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gas filtering mask, characterized in that: include, A wind frame assembly (100) comprises a wind frame base (101), a wind frame valve cover (102) is arranged on the wind frame base (101), and the wind frame valve cover (102) and the wind frame base (101) are detachably connected by threads; A filter assembly (200) comprises a first filter plate (201) and a second filter plate (202); a first gas separation membrane (203) is arranged on the surface of the first filter plate (201); a second gas separation membrane (204) is arranged on the surface of the second filter plate (202); the first filter plate (201) and the second filter plate (202) are arranged in opposite directions and in parallel; The mask body (300) comprises a nose clip (301), an elastic hanging rope (302), a first ventilation hole (303) and a second ventilation hole (304), wherein the elastic hanging rope (302) is symmetrically arranged at the edge positions of two opposite sides of the mask body (300).

2. A gas filter mask according to claim 1, characterized in that: The outer diameter of the wind frame assembly (100) is the same as the inner diameter of the first ventilation hole (303) on the mask body (300).

3. A gas filtering mask according to claim 2, characterized in that: The surface of the wind frame base (101) is provided with a first air vent (101a), the surface of the wind frame valve cover (102) is provided with a plurality of second air vents (102a), and a groove column (101b) protruding from the surface of the wind frame base (101) is provided at the center of the wind frame base (101).

4. A gas filtering mask according to claim 3, characterized in that: The first filter plate (201) is provided with a first air inlet (201a) and a first air outlet (201b), and the second filter plate (202) is provided with a second air inlet (202a) and a second air outlet (202b).

5. A gas filtering mask according to claim 4, characterized in that: The first air inlet (201a) and the second air inlet (202a) are arranged in opposite directions and in parallel, the first air inlet (201a) and the second air outlet (202b) are arranged to overlap with each other, and the first filter plate (201) and the second filter plate (202) have completely identical contours.

6. A gas filtering mask according to claim 5, characterized in that: A slot hole (205) is provided at the center of each of the first filter plate (201) and the second filter plate (202), and the slot hole (205) and the slot column (101b) are sleeved.

7. Intelligent detection and counting system, characterized by: A gas filter mask comprising the gas filter mask according to claim 1, and A humidity sensor (400) comprises an outer frame base (401), an outer frame top cover (402), a control switch (403), a humidity sensing element (404) and a display screen (405); the outer frame top cover (402) and the outer frame base (401) are detachably connected; an integrated circuit slot (406) and a humidity sensing element base (407) are provided on the inner surface of the outer frame base (401); The outer contour of the humidity sensor (400) is the same as the diameter of the second ventilation hole (304), and the humidity sensor (400) can be placed in the second ventilation hole (304); A respiratory frequency sampling module (500), wherein the respiratory frequency sampling module (500) is composed of a signal processing module (500a), an ADC converter (500b), an MCU microprocessor (500c), a display module (500d) and a power module (500e), and each module is electrically connected; The respiratory frequency sampling module (500) is placed in the integrated circuit slot (406).

8. The intelligent detection and counting system according to claim 7, characterized in that: The humidity sensor element (404) is composed of a substrate (404a), a flexible sensitive film (404c) and a cross-shaped conductive electrode (404b), and the flexible sensitive film (404c) and the cross-shaped conductive electrode (404b) are electrically connected.

9. The intelligent detection and counting system according to claim 8, characterized in that: The humidity sensor element (404) and the respiratory frequency sampling module (500) as well as the display screen (405) and the control switch (403) are electrically connected; The humidity sensor element (404) changes its own resistance according to the change of humidity, and transmits the current signal to the respiratory frequency sampling module (500); The current signal presented by the resistance change is transmitted to the signal processing module (500a).

10. The intelligent detection and counting system according to claim 9, characterized in that: The substrate (404a) is a polyimide (PI) substrate, the interdigitated conductive electrodes (404b) are silver interdigitated electrodes, and the flexible sensitive film (404c) is a MXene / poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)-based moisture-sensitive film; The power module (500e) is directly and electrically connected to the humidity sensor (400); The power supply module (500e) is directly electrically connected to the signal processing module (500a); the signal processing module (500a) is composed of a signal amplifier (500a-1) and a filter (500a-2); a current signal is transmitted between the humidity sensor (400) and the signal processing module (500a); a respiratory signal is processed by the signal amplifier (500a-1) and the filter (500a-2) and then transmitted to the ADC converter (500b) through an electrical connection; The power module (500e) is electrically connected to the ADC converter (500b), the ADC converter (500b) is electrically connected to the signal processing module (500a) and the MCU microprocessor (500c), and the ADC converter (500b) converts the current signal into a digital signal and transmits it to the MCU microprocessor (500c) through an electrical connection; The power module (500e) is electrically connected to the MCU microprocessor (500c), and the MCU microprocessor (500c) is composed of a data processing module (500c-1) and a counting module (500c-2); The MCU microprocessor (500c) is directly electrically connected to the display module (500d), and the MCU microprocessor (500c) can also be connected to a computer or a mobile device (500c-3) via Bluetooth wireless transmission; The power module (500e) is directly and electrically connected to the display module (500d).

Images