A smart mask

Abstract

The present invention discloses a smart mask, comprising a mask body, a prompting device, an airtightness detection device and a wireless temperature detection device; the prompting device is installed on a side of the airtightness detection device away from the mask body and contacts and electrically connects with the airtightness detection device when the mask has poor airtightness; the airtightness detection device is installed on the mask body and communicates with the breathing cavity inside the mask body; the wireless temperature detection device is installed inside the mask body and can perform two-way signal transmission with a wireless terminal. The present invention can perform airtightness inspection on the mask, so that the mask can achieve the best protective effect.

Description

Technical Field

[0001] The invention relates to the field of sanitation and epidemic prevention, and in particular to a smart mask. Background Art

[0002] Medical masks are medical protective textiles that can resist liquids, filter particles and bacteria, etc. They can be divided into disposable medical masks, medical surgical masks and medical protective masks. When responding to airborne respiratory infectious diseases, people at moderate risk need to wear at least disposable medical masks to prevent virus infection or reduce the risk of transmission from patients to people around them, thereby playing a role in epidemic prevention.

[0003] Currently, medical masks and related patents on the market have adopted various methods to improve sterilization efficiency, wearing comfort and air tightness, but they have a single function and generally only have the functions of resisting liquids, filtering particles and bacteria, etc. Some patents also combine electronic technology to propose intelligent masks. However, there are still the following shortcomings:

[0004] 1. High power consumption. The electronic module of the smart mask is an active module. The sensors, signal processing and transceiver devices used consume a lot of power and require a large capacity battery to power it, which makes the mask expensive, heavy and uncomfortable to wear.

[0005] 2. No temperature collection function. Patients with respiratory infectious diseases often have fever symptoms, and preliminary screening can be performed by measuring body temperature. Currently, masks on the market do not have a temperature monitoring function, and cannot perform self-temperature monitoring or collective screening of the crowd. Some patents mention the temperature measurement function of masks, but the method used consumes a lot of power and can only perform point-to-point detection. It is impossible to quickly measure the temperature of the crowd and is not suitable for group prevention and control during the epidemic.

[0006] 3. No tightness monitoring and warning function. The tightness of wearing a mask is related to whether the mask has the proper protective function. During continuous wearing, the mask may become loose due to various reasons, and the mask may not fit tightly enough on the face, thereby reducing the protective effect of the mask and increasing the risk of infection of infectious diseases. Masks in the prior art all lack a tightness monitoring and warning function. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a smart mask, which makes the mask intelligent and improves the safety of the mask.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A smart mask, comprising a mask body, a prompting device, an airtightness detection device and a wireless temperature detection device;

[0010] The prompt device is installed on a side of the airtight detection device away from the mask body and contacts and electrically connects with the airtight detection device when the airtightness of the mask is poor;

[0011] The airtight detection device is mounted on the mask body and communicates with the breathing cavity inside the mask body;

[0012] The wireless temperature detection device is installed inside the mask body and can perform two-way signal transmission with a wireless terminal.

[0013] The beneficial effects of the present invention are: the present invention is suitable for places such as factories and schools where people are densely populated and fever screening is required, which can greatly improve the efficiency of temperature monitoring; it is also suitable for individuals to monitor their own body temperature in real time through mobile phones. An air tightness detection device is provided to check the air tightness of the mask, and combined with a prompt device, a warning is issued when the air tightness fails to meet the requirements to notify the user to make adjustments, until the air tightness of the mask meets the requirements, the prompt device stops issuing warnings, and the user can be notified in time to adjust the mask, improve the protective effect, and enable the mask to prevent the spread of infectious diseases; a wireless temperature detection device is provided to realize wireless temperature measurement, and the wireless temperature detection device is installed on the inside of the mask body, which is used to detect the user's body temperature in real time. Through electromagnetic induction, the wireless terminal powers the wireless temperature detection device, and the wireless temperature detection device measures the body temperature and transmits the data to the wireless terminal, so that the user can quickly measure his own body temperature when he feels unwell; at the same time, it can reduce the pressure of screening fever patients during the outbreak. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a smart mask according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the airtightness detection device according to an embodiment of the present invention when a user is inhaling;

[0016] Figure 3 This is a schematic diagram of the structure of the airtightness detection device according to an embodiment of the present invention when the user is exhaling;

[0017] Figure 4 It is a structural schematic diagram of the airtightness detection device in the warning state according to an embodiment of the present invention;

[0018] Figure 5 This is a working flow diagram of the wireless temperature detection device according to the third embodiment of the present invention;

[0019] Figure 6 This is a working flow chart of the wireless temperature detection device according to the fourth embodiment of the present invention.

[0020] Description of labels:

[0021] 1. Mask body;

[0022] 2. Prompt device; 21. Base; 22. LED light; 23. Positive lead; 24. Negative lead;

[0023] 3. Airtightness detection device; 31. Air intake mechanism; 32. Power supply mechanism; 33. Air pressure detection mechanism; 311. First shell; 312. One-way air intake unit; 313. First air intake cavity; 331. Second shell; 332. Air pressure detection unit; 333. Second air intake cavity; 3121. Elastic sheet; 3122. Ring-shaped fixing platform; 3123. Support platform;

[0024] 4. Wireless temperature detection device; 411. RFID chip; 412. Signal conditioning module 413. Temperature sensor;

[0025] 51. Radio frequency reader / writer; 52. Mobile phone with NFC function. DETAILED DESCRIPTION

[0026] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0027] Please refer to Figure 1-Figure 6 , a smart mask, comprising a mask body, a prompting device, an airtightness detection device and a wireless temperature detection device;

[0028] The prompt device is installed on a side of the airtight detection device away from the mask body and contacts and electrically connects with the airtight detection device when the airtightness of the mask is poor;

[0029] The airtight detection device is mounted on the mask body and communicates with the breathing cavity inside the mask body;

[0030] The wireless temperature detection device is installed inside the mask body and can perform two-way signal transmission with a wireless terminal.

[0031] The working principle of the present invention is:

[0032] After the user puts on the mask, the wireless temperature detection device is close to the skin. When the wireless temperature detection device is close to the wireless terminal, the wireless terminal powers the wireless temperature detection device through electromagnetic induction, and the wireless temperature detection device measures the temperature. The wireless temperature detection device sends the detected data to the wireless terminal, and the user can get the real-time body temperature through the wireless terminal;

[0033] The air-tightness detection device becomes effective after the user puts on the mask. During the process of the user using the mask, the air-tightness of the mask is detected in real time. When the mask is not worn tightly, the air-tightness detection device is electrically connected to the prompt device to issue a warning to remind the user to adjust the mask.

[0034] From the above description, it can be seen that the beneficial effects of the present invention are: the present invention is applicable to places such as factories and schools where people are densely populated and fever personnel need to be screened, which can greatly improve the efficiency of temperature monitoring; it is also applicable to individuals monitoring their own body temperature in real time through mobile phones. An airtightness detection device is provided to check the airtightness of the mask, and in combination with a prompting device, a warning is issued when the airtightness fails to meet the requirements to notify the user to make adjustments, until the airtightness of the mask meets the requirements, the prompting device stops issuing warnings, and the user can be notified in time to adjust the mask, improve the protective effect, and enable the mask to prevent the spread of infectious diseases; a wireless temperature detection device is provided to realize wireless temperature measurement, and the wireless temperature detection device is installed on the inner side of the mask body, which is used to detect the user's body temperature in real time. Through electromagnetic induction, the wireless terminal supplies power to the wireless temperature detection device, and the wireless temperature detection device measures the temperature and reads the data through the wireless terminal, so that the user can quickly measure his own body temperature when he feels unwell and can seek medical treatment in time when he has a fever, and at the same time can reduce the pressure of screening fever patients during the outbreak.

[0035] Furthermore, the airtight detection device includes an air intake mechanism, a power supply mechanism and an air pressure detection mechanism;

[0036] The power supply mechanism and the air intake mechanism are respectively installed on both sides of the air pressure detection mechanism, and the air intake mechanism and the air pressure detection mechanism are unidirectionally ventilated;

[0037] One end of the air intake mechanism away from the air pressure detection mechanism is mounted on the mask body and communicates with the breathing cavity.

[0038] Furthermore, one end of the prompt device is pressed against the inside of the air pressure detection mechanism, and the other end is located outside the air pressure detection mechanism, and the side of the prompt device facing the air pressure detection mechanism is arranged opposite to the power supply mechanism;

[0039] When the air pressure detection mechanism contracts, the prompt device is pressed against the power supply mechanism and is electrically connected to the power supply mechanism;

[0040] When the air pressure detection mechanism expands, the prompt device is separated from the power supply mechanism to cut off the power supply to the prompt device.

[0041] From the above description, it can be seen that an air intake mechanism is provided to realize one-way air intake. The gas in the breathing cavity can only enter but not exit, and enters the air pressure detection mechanism through the air intake mechanism. If the air tightness of the mask is good, the gas entering the air pressure detection mechanism is sufficient, and the air pressure detection mechanism expands to push the prompt device out, so that the prompt device is separated from the power supply mechanism and the power is cut off. The prompt device is in a dormant state. At this time, it can be proved that the air tightness of the mask is good. If the gas entering the air pressure detection mechanism is insufficient, the air pressure detection mechanism contracts under the action of elastic force, and the prompt device will move toward the side of the power supply mechanism. The power supply mechanism is electrically connected to the prompt device to realize circuit conduction, and the prompt device issues a warning to remind the user, thereby realizing real-time air tightness detection of the mask.

[0042] Further, the air intake mechanism includes a first shell and a one-way air intake portion;

[0043] The first shell is installed on the outside of the mask body;

[0044] One end of the one-way air inlet portion is installed in the air inlet of the first shell, and the one-way air inlet portion and the first shell form a first air inlet cavity;

[0045] The other end of the one-way air inlet portion is installed on the inner side of the mask body and is in one-way communication with the breathing cavity, so that the air in the breathing cavity can enter the first air inlet cavity in one direction.

[0046] Furthermore, the one-way air inlet portion includes an elastic sheet, an annular fixing platform and a supporting platform;

[0047] One end of the annular fixing platform is embedded in the air inlet of the first shell, and the other end is located inside the mask body, so that the mask body is clamped between the first shell and the annular fixing platform;

[0048] The support platform is installed in the air inlet of the annular fixing platform;

[0049] The elastic sheet is installed in the first air inlet cavity through the supporting platform, and the elastic sheet is pressed against the annular fixing platform.

[0050] From the above description, it can be seen that an annular fixing platform and a supporting platform are provided to install an elastic sheet to form a one-way air intake channel to realize one-way air intake, and can be clamped on the mask body through the annular fixing platform and the first shell, on the one hand to realize the fixation of the one-way air intake part, on the other hand to ensure the tightness between the air intake mechanism and the mask, to prevent gas from leaking from the gap between the air intake mechanism and the mask body, and making it impossible to accurately measure the air tightness of the mask.

[0051] Further, the air pressure detection mechanism includes a second shell and an air pressure detection part;

[0052] One end of the air pressure detection unit is mounted on the air outlet side of the air intake mechanism and is interconnected with the air intake mechanism;

[0053] The second housing cover is arranged outside the air pressure detection part;

[0054] One end of the prompt device is mounted on the air pressure detection portion so as to move along with the volume change of the air pressure detection portion.

[0055] Furthermore, the air pressure detection unit is a membrane box.

[0056] From the above description, it can be seen that an air pressure detection unit is provided, in which the air pressure detection unit will change in volume according to the size of the air intake. When the air intake is sufficient, the air pressure detection unit expands and pushes out the prompt device, so that the prompt device is separated from the power supply mechanism. When the air intake is insufficient, the air pressure detection unit contracts under the action of elastic force, and the prompt device contacts the power supply mechanism to achieve circuit conduction, which can issue an early warning. The prompt device is connected to the air pressure detection unit to remind the user to adjust the mask when the air tightness is insufficient.

[0057] Furthermore, the prompting device includes a base, an LED light, a positive lead and a negative lead;

[0058] One end of the base is movably inserted into the air pressure detection mechanism, and the other end is located outside the air pressure detection mechanism;

[0059] The LED lamp is installed on a side of the base away from the air pressure detection mechanism;

[0060] One end of the positive lead and the negative lead are electrically connected to the positive and negative poles of the LED lamp respectively, and the other ends of the positive lead and the negative lead are respectively arranged on a side wall of the base facing the power supply mechanism, so that when the base is pressed against the power supply mechanism, the LED lamp is electrically connected to the power supply mechanism.

[0061] From the above description, it can be seen that a base is provided for installing an LED lamp, and the base is inserted into the air pressure detection mechanism to move with the air pressure detection mechanism, and circuit conduction is achieved through the positive lead and the negative lead.

[0062] Further, the wireless temperature detection device is a passive RFID temperature tag;

[0063] The passive RFID temperature tag is installed on the inner wall of the mask body to send the measured body temperature to a wireless terminal in a wireless radio frequency manner.

[0064] From the above description, it can be known that the passive RFID temperature tag is used to detect human body temperature, wherein the wireless terminal is a radio frequency reader or a mobile phone with NFC function, and the radio frequency reader or the mobile phone with NFC function transmits a 13.56MHz wireless radio frequency. When the passive RFID temperature tag enters the working area of ​​the radio frequency reader antenna, the antenna of the passive RFID temperature tag generates sufficient induced current. The passive RFID temperature tag obtains energy and is activated, and a DC voltage is established to realize passive power supply. There is no need to install batteries, which greatly reduces the weight of the wireless temperature detection device and reduces the space occupied. While realizing wireless temperature measurement, it can also ensure the comfort of the user. In factories, schools and other places where there are dense crowds and temperature monitoring is required, it can greatly reduce the pressure of screening people with fever.

[0065] Embodiment 1 of the present invention is:

[0066] The present invention is preferably used on reusable masks, and can also be used on disposable masks.

[0067] Please refer to Figure 1-Figure 4 , a smart mask, comprising a mask body 1, a prompt device 2, an airtight detection device 3 and a wireless temperature detection device 4;

[0068] The prompt device 2 is installed on a side of the airtight detection device 3 away from the mask body 1 and contacts and electrically connects with the airtight detection device 3 when the airtightness of the mask body 1 is poor;

[0069] The airtight detection device 3 is mounted on the mask body 1 and communicates with the breathing cavity inside the mask body 1;

[0070] The wireless temperature detection device 4 is installed inside the mask body 1 and can perform two-way signal transmission with the wireless terminal.

[0071] Optionally, the wireless terminal is a radio frequency reader 51 or a mobile phone 52 with NFC function;

[0072] When the wireless terminal is a radio frequency reader 51, the radio frequency reader 51 is installed on a wall or a door frame. When the user approaches the radio frequency reader 51, the radio frequency reader 51 generates an induced current to the wireless temperature detection device 4. The wireless temperature detection device is activated after obtaining energy to measure the temperature, and transmits the measured body temperature data to the radio frequency reader 51 to complete the data reading, thereby achieving the purpose of obtaining the body temperature data.

[0073] Reference Figure 2-Figure 4 , the airtight detection device 3 includes an air intake mechanism 31, a power supply mechanism 32 and an air pressure detection mechanism 33;

[0074] The power supply mechanism 32 and the air intake mechanism 31 are respectively installed on both sides of the air pressure detection mechanism 33, and the air intake mechanism 31 and the air pressure detection mechanism 33 are unidirectionally ventilated;

[0075] One end of the air inlet mechanism 31 away from the air pressure detection mechanism 33 is mounted on the mask body 1 and communicates with the breathing cavity.

[0076] Specifically, the power supply mechanism 32 includes a button battery and a battery box, wherein the positive and negative ends of the battery box are electrically connected to the button battery respectively, and the other ends of the positive and negative ends of the battery box are both located outside the battery box and facing the prompt device 2, and are used to be electrically connected to the prompt device 2;

[0077] Reference Figure 2-Figure 4 , one end of the prompt device 2 is pressed against the inside of the air pressure detection mechanism 33, and the other end is located outside the air pressure detection mechanism 33, and the prompt device 2 is arranged opposite to the power supply mechanism 32 on the side facing the air pressure detection mechanism 33;

[0078] When the air pressure detection mechanism 33 contracts, the prompt device 2 is pressed against the power supply mechanism 32 and is electrically connected to the power supply mechanism 32;

[0079] When the air pressure detection mechanism 33 expands, the prompt device 2 is separated from the power supply mechanism 32, so that the prompt device 2 is powered off.

[0080] Reference Figure 2-Figure 4 , the air intake mechanism 31 includes a first housing 311 and a one-way air intake portion 312;

[0081] The first shell 311 is installed on the outside of the mask body 1;

[0082] One end of the one-way air inlet portion 312 is installed in the air inlet of the first shell 311, and the one-way air inlet portion 312 and the first shell 311 form a first air inlet cavity 313;

[0083] The other end of the one-way air inlet portion 312 is installed on the inner side of the mask body 1 and is in one-way communication with the breathing cavity, so that the air in the breathing cavity can enter the first air inlet cavity 313 in one direction.

[0084] Reference Figure 2-Figure 4 The one-way air inlet portion 312 includes an elastic sheet 3121, an annular fixing platform 3122 and a supporting platform 3123;

[0085] One end of the annular fixing platform 3122 is embedded in the air inlet of the first shell 311, and the other end is located inside the mask body 1, so that the mask body 1 is clamped between the first shell 311 and the annular fixing platform 3122;

[0086] The support platform 3123 is installed in the air inlet of the annular fixing platform 3122;

[0087] The center of the elastic sheet 3121 is installed between the supporting platform 3123 and the annular fixing platform 3122 , and the outer edge of the elastic sheet 3121 is pressed against an end of the annular fixing platform 3122 away from the supporting platform 3123 .

[0088] Specifically, the center of the elastic sheet 3121 is sandwiched between the support platform 3123 and the annular fixing platform 3122;

[0089] Preferably, the elastic sheet 3121 is a rubber sheet;

[0090] Reference Figure 2-Figure 4 , the air pressure detection mechanism 33 includes a second shell 331 and an air pressure detection unit 332;

[0091] One end of the air pressure detection unit 332 is mounted on the air outlet side of the air intake mechanism 31 and communicates with the air intake mechanism 31;

[0092] The second housing 331 is disposed outside the air pressure detection unit 332 and forms a second air intake cavity 333 with the air intake mechanism 31;

[0093] One end of the prompt device 2 is mounted on the air pressure detection portion 332 to move along with the volume change of the air pressure detection portion 332 .

[0094] Preferably, the air pressure detection unit 332 is a membrane box.

[0095] Embodiment 2 of the present invention is:

[0096] The difference between this embodiment and the first embodiment is that the specific structure of the prompt device is limited;

[0097] Please refer to Figure 2-Figure 4 , the prompt device 2 includes a base 21, an LED lamp 22, a positive lead 23 and a negative lead 24;

[0098] One end of the base 21 is movably inserted into the air pressure detection mechanism 33, and the other end is located outside the air pressure detection mechanism 33;

[0099] The LED light 22 is installed on a side of the base 21 away from the air pressure detection mechanism 33;

[0100] One end of the positive lead 23 and the negative lead 24 are electrically connected to the positive and negative poles of the LED lamp 22 respectively, and the other ends of the positive lead 23 and the negative lead 24 are respectively arranged on a side wall of the base 21 facing the power supply mechanism 32, so that the LED lamp 22 is electrically connected to the power supply mechanism 32 when the base 21 is pressed against the power supply mechanism 32.

[0101] When the base 21 moves toward the side of the mask body 1, the positive lead 23 and the negative lead 24 are respectively connected to the positive and negative electrodes of the battery box to achieve circuit conduction, and the LED light is on.

[0102] The specific working process of the prompt device is as follows:

[0103] When a person exhales, Figure 3As shown, the gas opens the elastic sheet, and the exhaled gas enters the membrane box through the elastic sheet and the first air inlet cavity. Since the membrane box is located in the second air inlet cavity and is directly exposed to the atmosphere outside the mask, the air pressure inside the membrane box is greater than the air pressure outside the membrane box. The membrane box expands and pushes the base to move away from the mask body, separating the positive lead, negative lead and the positive and negative poles of the battery box.

[0104] When a person inhales, Figure 2 As shown, the elastic sheet is closed, the gas in the first air inlet cavity cannot be sucked out, and the membrane box remains in an expanded state.

[0105] If the mask is not worn tightly, the exhaled gas will overflow from the gap between the mask and the face, and the gas entering the first air inlet cavity will be reduced. Since the first air inlet cavity is not completely sealed, there is gas leakage. When the gas leakage is greater than the air intake, the pressure difference between the inside and outside of the membrane box is insufficient to maintain the expansion of the membrane box. Under the action of elastic force, the membrane box shrinks, driving the base to move toward the side of the mask body. Finally, the positive and negative poles of the LED light are connected to the positive and negative poles of the battery box, and the LED light is lit. Figure 4 As shown, the warning mask is not worn tightly and needs to be readjusted.

[0106] In addition, when the mask is not in use, in order to prevent the LED light from lighting up and causing waste of electricity, a tearable insulating film can be attached to the opposite side of the power supply mechanism or the prompt device to avoid electrical connection between the power supply mechanism and the prompt device.

[0107] Embodiment 3 of the present invention is:

[0108] The difference between this embodiment and the first embodiment is that the specific structure of the wireless temperature detection device is further limited.

[0109] Reference Figure 1 and Figure 5 , the wireless temperature detection device 4 is a passive RFID temperature tag;

[0110] The passive RFID temperature tag is installed on the inner wall of the mask body 1 to send the measured body temperature to the wireless terminal in the form of wireless radio frequency.

[0111] The radio frequency reader 51 is an RFID reader that sends a 13.56 MHz radio frequency signal through an antenna;

[0112] Specifically, refer to Figure 5 The passive RFID temperature tag includes an RFID chip 411, a signal conditioning module 412 and a temperature sensor 413. The RFID chip 411, the signal conditioning module 412 and the temperature sensor 413 are integrated on a flexible circuit board. The flexible circuit board is located on the inner side of the mask body 1 and can contact the user's skin for temperature measurement.

[0113] Among them, refer to Figure 5 , non-contact bidirectional data transmission is performed between the radio frequency reader 51 and the passive RFID temperature tag, the communication protocol meets the ISO / IEC 15693 standard, and the communication distance is ≤1m. The specific working process is as follows:

[0114] (1) The RFID reader sends a 13.56 MHz radio frequency signal through the antenna.

[0115] (2) When the passive RFID temperature tag enters the working area of ​​the reader antenna, the antenna of the passive RFID temperature tag generates sufficient induction current. The passive RFID temperature tag obtains energy and is activated (awakened), generates a DC voltage, and is powered.

[0116] (3) The passive RFID temperature tag receives the query command from the RFID reader and enters the waiting for response state according to the collision arbitration algorithm.

[0117] (4) The temperature sensor 413 senses the human body temperature, generates a current or voltage signal proportional to the temperature, and transmits the current or voltage signal to the signal conditioning module.

[0118] (5) The signal conditioning module converts the current or voltage signal into a frequency signal and a digital signal, and sends the digital signal to the RFID chip.

[0119] (6) The RFID chip sends the temperature signal to the RFID reader through the built-in antenna.

[0120] (7) The RFID reader demodulates and decodes the signal and then sends it to the higher level of the system for related processing.

[0121] (8) The high-level system determines the legitimacy of the passive RFID temperature tag, and then performs statistical analysis on the data storage and issues warnings for abnormal body temperatures.

[0122] The beneficial effects of this embodiment are: using a radio frequency reader as a wireless terminal, an anti-collision mechanism is used to solve the collision problem in data transmission, and the signals of multiple passive RFID temperature tags can be read at the same time. It can issue a warning in time for abnormal body temperature, and the monitoring efficiency is high. It is particularly suitable for factories, schools, hospitals and other enterprises and institutions to quickly monitor the body temperature of employees during the epidemic in real time; the passive RFID temperature tag adopts a passive power supply method, and there is no need to install a battery, which greatly reduces the weight, volume and cost of the tag; the passive RFID temperature tag is placed in the mask, and when the mask is worn, it fits tightly with the face and can accurately sense the body temperature; the temperature sensor generates a current or voltage signal proportional to the temperature, and the signal conditioning module then converts the current or voltage signal into a frequency signal and a digital signal in turn. This method can effectively reduce the power consumption of the circuit and enhance the anti-interference ability of the circuit.

[0123] Embodiment 4 of the present invention is:

[0124] The difference between this embodiment and the third embodiment is that another transmission mode of the wireless temperature measurement device is defined.

[0125] Preferably, the wireless terminal is a mobile phone 52 with NFC function;

[0126] Reference Figure 6 , non-contact bidirectional data transmission is performed between the mobile phone 52 with NFC function and the passive RFID temperature tag, and the communication protocol meets the ISO / IEC 15693 standard. Due to the low transmission power of the mobile phone, the communication distance of this working mode is ≤10cm. The specific working process is as follows:

[0127] (1) Run the temperature collection app, and the mobile phone with NFC function sends a wireless radio frequency signal.

[0128] (2) When the NFC-enabled mobile phone is brought close to the passive RFID temperature tag, and the distance is ≤10cm, the antenna of the passive RFID temperature tag generates sufficient induction current. The passive RFID temperature tag obtains energy and is activated (woke up), establishing a DC voltage to power the signal conditioning module and the temperature sensor.

[0129] (3) The passive RFID temperature tag receives the inquiry command from the mobile phone with NFC function and enters the waiting state.

[0130] (4) The temperature sensor senses the human body temperature, generates a current or voltage signal proportional to the temperature, and transmits the current or voltage signal to the signal conditioning module.

[0131] (5) The signal conditioning module converts the current or voltage signal into a frequency signal and a digital signal, and sends the digital signal to the RFID chip.

[0132] (6) The RFID chip sends the digital signal to the NFC-enabled mobile phone through the built-in antenna.

[0133] (7) The received temperature value is displayed in the mobile phone APP.

[0134] Furthermore, the passive RFID temperature tag needs to be calibrated before use (when the wireless terminal uses an RFID reader, the calibration of multiple smart mask passive RFID temperature tags can be completed each time; when the wireless terminal uses an NFC mobile phone, the calibration of only one smart mask passive RFID temperature tag can be completed each time).

[0135] The calibration steps are as follows:

[0136] (1) Place the standard temperature measuring instrument and the smart mask passive RFID temperature tag to be calibrated in the same temperature environment.

[0137] (2) Place the RFID reader or NFC phone close to the passive RFID temperature tag, and the application software sends a calibration command to the RFID chip.

[0138] (3) The RFID chip transmits the measured temperature value and current calibration coefficient of the temperature sensor to the RFID reader or mobile phone with NFC function.

[0139] (4) The RFID reader or NFC phone obtains data and compares it with the temperature value displayed by the standard temperature measuring instrument to obtain a new calibration coefficient.

[0140] (5) The RFID reader or NFC phone sends the new calibration coefficients to the RFID chip to complete the calibration.

[0141] The beneficial effect of this embodiment is that by using the NFC function of the mobile phone, the wearer of the smart mask can monitor his or her body temperature at any time. Since the receiving and transmitting power of the NFC antenna of the mobile phone is relatively small, it can only receive the temperature information of the smart mask at a close distance (≤10cm) and will not receive other people's information by mistake.

[0142] In summary, the smart mask provided by the present invention adopts a one-way air intake method, that is, a one-way valve is used, and the principle of expansion and contraction of the membrane box under the action of the internal and external air pressure difference and its own elastic force is used to automatically monitor the tightness of the mask wearing, and combined with a prompt device, when the air tightness of the mask is not good, the LED light and the power supply mechanism are energized and light up to issue a warning, reminding the user to adjust the mask, thereby ensuring that the protective effect of the mask is fully exerted, the exhaled gas enters the membrane box, and the membrane box is not connected to the external atmosphere, ensuring that the exhaled gas will not directly enter the atmosphere, effectively preventing the exhaled gas from polluting others; when a radio frequency reader is used, It can read the signals of multiple passive RFID temperature tags at the same time, and can issue warnings in time for abnormal body temperature. It has high monitoring efficiency and is particularly suitable for factories, schools, hospitals and other enterprises and institutions to conduct rapid real-time monitoring of employees' body temperatures during the epidemic. Passive RFID temperature tags do not require additional power supply and make full use of the NFC function of mobile phones or the radio frequency and data reading functions of radio frequency readers. When the mobile phone NFC or radio frequency reader is close to the passive RFID temperature tag, the passive RFID temperature tag obtains energy through electromagnetic induction and is activated, establishing a DC voltage, realizing passive power supply, eliminating the need for battery installation, and saving space.

[0143] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A smart mask, characterized in that: It includes a mask body, a prompting device, an airtightness detection device and a wireless temperature detection device; The prompt device is installed on a side of the airtight detection device away from the mask body and contacts and electrically connects with the airtight detection device when the airtightness of the mask is poor; The airtight detection device is mounted on the mask body and communicates with the breathing cavity inside the mask body; The wireless temperature detection device is installed inside the mask body and can perform two-way signal transmission with the wireless terminal; The airtight detection device comprises an air intake mechanism, a power supply mechanism and an air pressure detection mechanism; The power supply mechanism and the air intake mechanism are respectively installed on both sides of the air pressure detection mechanism, and the air intake mechanism and the air pressure detection mechanism are unidirectionally ventilated; One end of the air inlet mechanism away from the air pressure detection mechanism is mounted on the mask body and communicates with the breathing cavity; The wireless temperature detection device is a passive RFID temperature tag; The passive RFID temperature tag is installed on the inner wall of the mask body to send the measured body temperature to a wireless terminal in a wireless radio frequency manner.

2. A smart mask according to claim 1, characterized in that: One end of the prompt device is pressed against the inside of the air pressure detection mechanism, and the other end is located outside the air pressure detection mechanism, and the side of the prompt device facing the air pressure detection mechanism is arranged opposite to the power supply mechanism; When the air pressure detection mechanism contracts, the prompt device is pressed against the power supply mechanism and is electrically connected to the power supply mechanism; When the air pressure detection mechanism expands, the prompt device is separated from the power supply mechanism to cut off the power supply to the prompt device.

3. A smart mask according to claim 1, characterized in that: The air intake mechanism comprises a first housing and a one-way air intake portion; The first shell is installed on the outside of the mask body; One end of the one-way air inlet portion is installed in the air inlet of the first shell, and the one-way air inlet portion and the first shell form a first air inlet cavity; The other end of the one-way air inlet portion is installed on the inner side of the mask body and is in one-way communication with the breathing cavity, so that the air in the breathing cavity can enter the first air inlet cavity in one direction.

4. A smart mask according to claim 3, characterized in that: The one-way air inlet portion includes an elastic sheet, an annular fixing platform and a supporting platform; One end of the annular fixing platform is embedded in the air inlet of the first shell, and the other end is located inside the mask body, so that the mask body is clamped between the first shell and the annular fixing platform; The support platform is installed on the annular fixing platform; The center of the elastic sheet is installed between the supporting platform and the annular fixing platform, and the outer edge of the elastic sheet is pressed against an end of the annular fixing platform away from the supporting platform.

5. The smart mask according to claim 1, characterized in that: The air pressure detection mechanism includes a second housing and an air pressure detection unit; One end of the air pressure detection unit is mounted on the air outlet side of the air intake mechanism and is interconnected with the air intake mechanism; The second housing cover is arranged outside the air pressure detection part; One end of the prompt device is mounted on the air pressure detection portion so as to move along with the volume change of the air pressure detection portion.

6. A smart mask according to claim 5, characterized in that: The air pressure detection part is a membrane box.

7. A smart mask according to claim 1, characterized in that: The prompting device comprises a base, an LED lamp, a positive lead and a negative lead; One end of the base is movably inserted into the air pressure detection mechanism, and the other end is located outside the air pressure detection mechanism; The LED lamp is installed on a side of the base away from the air pressure detection mechanism; One end of the positive lead and the negative lead are electrically connected to the positive and negative poles of the LED lamp respectively, and the other ends of the positive lead and the negative lead are respectively arranged on a side wall of the base facing the power supply mechanism, so that when the base is pressed against the power supply mechanism, the LED lamp is electrically connected to the power supply mechanism.

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