CN111973905A - Gauze mask and ventilation system thereof - Google Patents
Gauze mask and ventilation system thereof Download PDFInfo
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- 238000009423 ventilation Methods 0.000 title claims abstract description 43
- 230000003321 amplification Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- 208000002874 Acne Vulgaris Diseases 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 8
- 206010000496 acne Diseases 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 239000001569 carbon dioxide Substances 0.000 description 8
- 230000001815 facial effect Effects 0.000 description 7
- 230000033764 rhythmic process Effects 0.000 description 7
- 238000005457 optimization Methods 0.000 description 5
- 238000009395 breeding Methods 0.000 description 4
- 230000001488 breeding effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000010365 information processing Effects 0.000 description 3
- 208000035473 Communicable disease Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000013566 allergen Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 230000000241 respiratory effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/006—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort with pumps for forced ventilation
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
- A41D13/0025—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment by means of forced air circulation
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1184—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with protection for the eyes, e.g. using shield or visor
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
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Abstract
The invention belongs to the technical field of masks, and discloses a mask and a ventilation system thereof, wherein the ventilation system comprises an air pressure sensor for sensing air pressure, an exhaust fan for exhausting air, an air inlet fan for air inlet, a processor, a power amplifier A and a power amplifier B; the air pressure sensor is connected with the processor; the air inlet fan is connected with the processor through a power amplifier A, and the exhaust fan is connected with the processor through a power amplifier B. The mask comprises a mask body and mask belts symmetrically arranged on two sides of the mask body, a ventilation system is arranged on the mask body, a power supply used for supplying power to the ventilation system is further arranged on the mask body, and a switch is arranged on the power supply. The ventilation system of the invention is convenient for ventilation, leads the air flow to be smooth, automatically adapts to the breathing requirement of a wearer in size of the air flow and increases the use comfort.
Description
Technical Field
The invention belongs to the technical field of masks, and particularly relates to a mask and a ventilation system thereof.
Background
The mask is a sanitary article, generally refers to a device which is worn at the mouth and nose part and used for filtering air entering the mouth and nose so as to prevent harmful gas, smell and spray from entering the mouth and nose of a wearer, and is made of gauze or paper and the like. The mask has a certain filtering function on air entering the lung, and has a very good protection function when the mask is worn for operation in an environment polluted by dust and the like when respiratory infectious diseases are prevalent.
People and patients who work in severe environments or for other special reasons, such as people who need to protect against infectious diseases, need to wear masks for a long time to reduce environmental irritation, filter allergens, reduce the onset of illness, protect respiratory tracts and the like. However, when the mask is worn for a long time, the problems of unsmooth breathing, oxygen deficiency and the like are caused by unsmooth airflow, carbon dioxide accumulation, difficult ventilation and the like. And the temperature of the part covered by the mask is too high, which causes bacteria on the surface of the face to breed and bed, and the facial acne and other problems are easy to occur after long-term use. The exhaled hot air can not be rapidly diffused in the mask, and can generate high-temperature water vapor in the mask, so that people feel uncomfortable, meanwhile, the warm and humid environment is favorable for breeding bacteria, and if the mask is changed at irregular time, diseases are easily caused.
Disclosure of Invention
In order to solve the above problems of the prior art, the present invention has been made in an effort to provide a ventilating system facilitating air intake and exhaust, and to be applied to a hood.
The technical scheme adopted by the invention is as follows:
a ventilation system comprises a processor, an exhaust fan for exhausting air and an intake fan for intake air; the air inlet fan is connected with the processor through a power amplifier A, and the exhaust fan is connected with the processor through a power amplifier B.
Furthermore, the system also comprises an air pressure sensor used for sensing air pressure, and the air pressure sensor is connected with the processor.
The air pressure sensor is used for continuously detecting an air pressure value, the air pressure sensor outputs a digital signal reflecting the air pressure, and the digital signal is directly input into the processor and then subjected to algorithm and optimization processing. After being processed by the processor, the signals are changed into two paths of output signals which are respectively sent to the power amplifier A and the power amplifier B. And the power amplifier A generates corresponding voltage and current according to the output signal of the processor, drives the air inlet fan and adjusts the air inflow. Similarly, the power amplifier B generates corresponding voltage and current according to the output signal of the processor, drives the exhaust fan, and adjusts the amount of exhaust. The rotating speeds of the air inlet fan and the air exhaust fan are adjusted according to the air pressure, so that the rotating speeds of the air inlet fan and the air exhaust fan are finely adjusted and controlled, and the purpose of reasonably adjusting the air inflow and the air displacement is achieved.
The air pressure sensor is used for measuring air pressure, and the air pressure sensor is an existing air pressure sensor. The processor performs algorithm and optimization processing on the input signal and is a conventional electronic component. The power amplifier A and the power amplifier B amplify the power of input signals, output voltage and current with certain power and drive a fan to rotate, and are both conventional power amplifiers.
The utility model provides a be provided with foretell ventilation system's gauze mask, is in including gauze mask main part and symmetry setting the gauze mask area of gauze mask main part both sides, ventilation system sets up in the gauze mask main part, still be provided with in the gauze mask main part and be used for the power of ventilation system power supply, be provided with the switch on the power. The power supply is a battery, and a switch is arranged on the battery.
When the existing masks are used, the problems that the breathing is not smooth, the temperature of the part covered by the masks is too high due to unsmooth airflow, carbon dioxide accumulation and difficult ventilation, bacteria on the surface of the face are bred and attached, and facial acne and the like are easy to occur to a user for a long time are caused. The mask body is provided with the ventilation system, so that air inlet and exhaust are matched with the breathing rhythm of a wearer, ventilation is facilitated, air flow is smooth, carbon dioxide accumulation can be effectively reduced, excessive face temperature and face surface bacteria breeding are prevented in the using process, face acne or germ infection and the like are prevented, and using comfort is improved.
In order to effectively match air intake and exhaust with the breathing rhythm of a wearer, closed-loop fine ventilation regulation and control are implemented through sensing information and information processing, so that the use comfort degree is obtained to the maximum extent. Thus, the algorithm steps performed in the system are as follows, according to the following two cases:
in the first case, the higher the air pressure is, the higher the output voltage of the air pressure sensor is, the following algorithm steps are executed:
1. the processor samples and analog-to-digital converts its input signal, which is here the output signal from the air pressure sensor. Calculating an average value u for N samples of an input signal0And store u0(N is a positive integer, N > 1); constantly updating and storing u0(u0Representing the average value of the air pressure).
2. Collecting L input signal samples, and calculating average value u for M samples1And satisfies 1. ltoreq. M < L < N (u)1Representing the current air pressure value). Continuously collecting signal samples and calculating the average value u for each L input signal samples according to the method1Then compare u1And u0The value of (c). If u is1≥u0(indicating that the current air pressure value is higher than or equal to the average air pressure value), the following step 3 is performed; if u is1＜u0(indicating that the current air pressure value is below the air pressure average value), the following step 4 is performed.
3. The processor outputs two voltage average values yA＝v1，yB＝v2Thereby causing the power amplifier A to output a corresponding current average value I1The power amplifier B outputs a corresponding current average value I2And satisfy v2≥v1,I2≥I1。
4. The processor outputs two voltage average values yA＝v3，yB＝v4Thereby causing the power amplifier A to output a corresponding current average value I3The power amplifier B outputs a corresponding current average value I4And satisfy v3＞v4,I3＞I4。
In the second case, the higher the air pressure is, the lower the output voltage of the air pressure sensor is, the following algorithm steps are executed:
1. the processor samples and analog-to-digital converts its input signal, which is here the output signal from the air pressure sensor. Calculating an average value u for N samples of an input signal0And store u0(N is a positive integer, N > 1); constantly updating and storing u0(u0Representing the average value of the air pressure).
2. Collecting L input signal samples, and calculating average value u for M samples1And satisfies 1. ltoreq. M < L < N (u)1Representing the current air pressure value). Continuously collecting signal samples and calculating the average value u for each L input signal samples according to the method1Then compare u1And u0The value of (c). If u is1≥u0(indicating that the current air pressure value is less than or equal to the air pressure average value), the following step 3 is performed; if u is1＜u0(indicating that the current air pressure value is above the air pressure average value), the following step 4 is performed.
3. The processor outputs two voltage average values yA＝v1，yB＝v2Thereby causing the power amplifier A to output a corresponding current average value I1The power amplifier B outputs a corresponding current average value I2And satisfy v1≥v2,I1≥I2。
4. The processor outputs two voltage average values yA＝v3，yB＝v4Thereby causing the power amplifier A to output a corresponding current average value I3The power amplifier B outputs a corresponding current average value I4And satisfy v4＞v3,I4＞I3。
Furthermore, the air inlet fan and the exhaust fan are both provided with filter sheets. The filter sheet can be arranged on one surface, close to a human body, of the air inlet fan and the exhaust fan, and also can be arranged on one surface, far away from the human body, of the air inlet fan and the exhaust fan, or can cover two sides of the air inlet fan and the exhaust fan.
Furthermore, the mask body is made of transparent materials, and the air inlet fan and the exhaust fan are symmetrically arranged on two sides of the mask body. The mask main body can be made of transparent materials so as to solve the problem that the mask wearing face shields the face and the work and social activities are inconvenient.
Furthermore, the mask body is made of an airtight material.
Furthermore, the mask main body is also provided with an audio amplification device, and the audio amplification device is connected with the power supply; the audio amplification device comprises a microphone, an amplifier connected with the microphone and a loudspeaker connected with the amplifier, and is used for ensuring that a mask wearer can smoothly communicate with other people through voice.
Furthermore, the mask body is also provided with a transparent eye protection sheet. The mask is fixed by a head ring, and a battery and a part of electronic elements are placed on the head ring, so that the weight of the mask main body is reduced.
The invention has the beneficial effects that:
the mask is provided with the ventilation system, so that air flow is smooth, and the problems of poor air permeability and difficulty in breathing of a user of the traditional mask are solved. Still through sensing information and information processing, implement the meticulous regulation and control of ventilating of closed loop, make air inlet and exhaust and the breathing rhythm of the person of wearing cooperate, use experience is good, and the user can wear for a long time comfortably. The mask can effectively reduce carbon dioxide accumulation, prevent overhigh facial temperature and bacteria on the surface of the face from breeding in the using process, and prevent facial acne and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Figure 2 is a schematic view of a ventilation system of the present invention.
Fig. 3 is a schematic diagram of the audio amplifying apparatus of the present invention.
In the figure: 1-mask body; 2-mask belt; 3-a barometric sensor; 4-a processor; 5-a microphone; 6-an amplifier; 7-a power amplifier A; 8-exhaust fan; 9-an air intake fan; 10-power amplifier B; 11-a loudspeaker; 12-power supply.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 to 2, the ventilation system of the present embodiment includes an air pressure sensor 3 for sensing air pressure, an exhaust fan 8 for exhausting air, and an intake fan 9 for intaking air, and further includes a processor 4, wherein the intake fan 9 is connected to the processor 4 through a power amplifier a7, and the exhaust fan 8 is connected to the processor 4 through a power amplifier B10.
The utility model provides a mask, be in including mask main part 1 and symmetry setting the mask area 2 of 1 both sides of mask main part, ventilation system sets up on the mask main part 1, still be provided with on the mask main part 1 and be used for giving the power 12 of ventilation system power supply, be provided with the switch on the power 12.
The mask belt 2 is arranged at two sides of the mask body 1 and is used for fixing the mask on the face of a human body. The air pressure sensor 3, the air inlet fan 9, the air exhaust fan 8, the power amplifier A7, the power amplifier B10, the power supply 12 and the adjusting switch are all arranged on one surface of the mask main body 1, which is far away from the human body. The intake fan 9 and the exhaust fan 8 are symmetrically arranged on the mask body 1, the power amplifier a7 is arranged above the intake fan 9, and the power amplifier B10 is arranged above the exhaust fan 8.
The air pressure sensor 3 is used for sensing the pressure in the mask, continuously detecting an air pressure value, converting the air pressure value into a digital signal and inputting the digital signal into the processor 4, the processor 4 carries out algorithm and optimization processing, the digital signal is processed by the processor 4 and then converted into two paths of signals, and the two paths of signals are respectively transmitted to the power amplifier A7 and the power amplifier B10. The power amplifier A7 generates corresponding voltage according to the signal output by the processor 4, drives the air intake fan 9, and adjusts the air intake quantity. Similarly, the power amplifier B10 generates a corresponding voltage according to the signal output by the processor 4, drives the exhaust fan 8, and adjusts the amount of exhaust air. The air volume of the air inlet fan 9 and the air exhaust fan 8 is adjusted according to the air pressure in the mask main body 1, fine regulation and control of the air inlet volume and the air exhaust volume are achieved, air inlet and exhaust are matched with the breathing rhythm of a wearer, and the wearing comfort level is improved.
The air pressure sensor 3 is used for measuring the air pressure in the mask, the air pressure sensor 3 is the existing air pressure sensor 3, and the model of the air pressure sensor 3 is BMP 280. The processor 4 is model number STM32L010K8T6, and the power amplifier a7 and the power amplifier B10 are both model numbers L298N. The air inlet fan 9 and the air outlet fan 8 are AD0405 HB-G70.
The specific regulation process is performed according to the following algorithm.
1. The processor 4 samples and analog-to-digital converts its input signal, which here is the signal from the air pressure sensor 3. Calculating an average value u for 3000 points of an input signal0And store u0(ii) a Constantly updating and storing u0。
2. Collecting L-300 input signal samples, and calculating average value u for M-40 samples1. Continuously collecting signal sampling points, inputting the signal sampling points with each L being 300, and calculating an average value u according to the mode1Then compare u1And u0The value of (c). If u is1≥u0(indicating that the current air pressure value is higher than or equal to the average air pressure value), the following step 3 is performed; if u is1＜u0(indicating that the current air pressure value is below the air pressure average value), the following step 4 is performed.
3. The processor 4 outputs two voltage average values yA＝1.4v，yB3.1v, this causes the power amplifier a7 to output the corresponding current average I1The power amplifier B10 outputs the corresponding current average value I2＝35mA。
4. The processor 4 outputs two voltage average values yA＝3.1v，yB1.4v, which causes the power amplifier a7 to output the corresponding current average I335mA, the power amplifier B10 outputs the corresponding current average value I4＝12mA。
The mask main body 1 is made of transparent materials, and the air inlet fan 9 and the air exhaust fan 8 are respectively arranged on two sides of the mask; the fan positions at the two sides of the mask are provided with air filtering materials which cover the air inlet fan 9 and the air exhaust fan 8.
When the existing masks are used, the problems that the breathing is not smooth, the temperature of the part covered by the masks is too high due to unsmooth airflow, carbon dioxide accumulation and difficult ventilation, bacteria on the surface of the face are bred and attached, and facial acne and the like are easy to occur to a user for a long time are caused. The mask body 1 is provided with the air inlet fan 9 and the air outlet fan 8, and the operation of the air inlet fan 9 and the air outlet fan 8 is adjusted through the processor 4 and the power amplifier, so that air inlet and air outlet are matched with the breathing rhythm of a wearer, ventilation is facilitated, air flow is smooth, carbon dioxide accumulation can be effectively reduced, overhigh temperature of the face and bacterial growth on the surface of the face in the using process are prevented, acne on the face is prevented, and the using comfort is improved.
The air pressure sensor 3, the processor 4, the power amplifier A7, the power amplifier B10, the air intake fan 9 and the air exhaust fan 8 are all connected with the power supply 12. The switch is used for controlling the on-off of the current.
Example 2:
as shown in fig. 1 to 2, the ventilation system of this embodiment includes an air pressure sensor 3 for sensing air pressure, an exhaust fan 8 for exhausting air, and an intake fan 9 for intaking air, and further includes a processor 4, where the intake fan 9 is connected to the processor 4 through a power amplifier a7, and the exhaust fan 8 is connected to the processor 4 through a power amplifier B10.
The utility model provides a mask, be in including mask main part 1 and symmetry setting the mask area 2 of 1 both sides of mask main part, ventilation system sets up on the mask main part 1, still be provided with on the mask main part 1 and be used for giving the power 12 of ventilation system power supply, be provided with the switch on the power 12.
The air pressure sensor 3 is used for measuring the air pressure in the mask, the air pressure sensor 3 is the existing air pressure sensor 3, and the model of the air pressure sensor 3 is BMP 280. The processor 4 is model number STM32L010K8T6, and the power amplifier a7 and the power amplifier B1010 are model numbers L298N. The air inlet fan 9 and the air outlet fan 8 are AD0405 HB-G70.
The mask body 1 is further provided with an audio amplification device which mainly comprises a microphone 5, an amplifier 6 and a loudspeaker 11, as shown in fig. 3. Choose miniature patch microphone 5 for use, the model: WM 7231; mini-amplifier 6, type: PAM 8403; micro speaker 11, model: 1525-D8-0.5W.
Example 3:
the present embodiment is defined by optimizing on the basis of the above embodiment 2, and as shown in fig. 1 to 3, the ventilation system of the present embodiment includes a processor 4, an exhaust fan 8 for exhausting air, and an intake fan 9 for intake air; the air inlet fan 9 is connected with the processor 4 through a power amplifier A7, and the air outlet fan 8 is connected with the processor 4 through a power amplifier B10. The device also comprises an air pressure sensor 3 for sensing air pressure, wherein the air pressure sensor 3 is connected with the processor 4.
The air pressure sensor 3 is used for continuously detecting an air pressure value, the air pressure sensor 3 outputs a digital signal reflecting the air pressure, the digital signal is directly input into the processor 4, and then algorithm and optimization processing are carried out. After being processed by the processor 4, the signals are changed into two paths of output signals which are respectively sent to the power amplifier A7 and the power amplifier B10. The power amplifier A7 generates corresponding voltage and current according to the output signal of the processor 4, drives the air intake fan 9, and adjusts the air intake amount. Similarly, the power amplifier B10 generates corresponding voltage and current according to the output signal of the processor 4, drives the exhaust fan 8, and adjusts the exhaust amount. The rotating speeds of the air inlet fan 9 and the air outlet fan 8 are adjusted according to the air pressure, so that the rotating speeds of the air inlet fan 9 and the air outlet fan 8 are finely adjusted and controlled, and the purpose of reasonably adjusting the air inflow and the air discharge is achieved.
The air pressure sensor 3 is used for measuring air pressure, and the air pressure sensor 3 is an existing air pressure sensor 3. The processor 4 performs an algorithm and optimization process on the input signal, and is a conventional electronic component. The power amplifier a7 and the power amplifier B10 amplify the power of the input signal, output a voltage and a current with a certain power, and drive the fan to rotate, which are both conventional power amplifiers 6. The air pressure sensor 3 is used for measuring the air pressure in the mask, the air pressure sensor 3 is the existing air pressure sensor 3, and the model of the air pressure sensor 3 is BMP 280. The processor 4 is model number STM32L010K8T6, and the power amplifier a7 and the power amplifier B10 are both model numbers L298N. The air inlet fan 9 and the air outlet fan 8 are AD0405 HB-G70.
The utility model provides a be provided with foretell ventilation system's gauze mask, is in including gauze mask main part 1 and symmetry setting the gauze mask area 2 of 1 both sides of gauze mask main part, ventilation system sets up on the gauze mask main part 1, still be provided with on the gauze mask main part 1 and be used for the power 12 of ventilation system power supply, be provided with the switch on the power 12. The power source 12 is a battery with a switch disposed thereon.
When the existing masks are used, the problems that the breathing is not smooth, the temperature of the part covered by the masks is too high due to unsmooth airflow, carbon dioxide accumulation and difficult ventilation, bacteria on the surface of the face are bred and attached, and facial acne and the like are easy to occur to a user for a long time are caused. The mask body 1 is provided with the ventilation system, so that air inlet and exhaust are matched with the breathing rhythm of a wearer, ventilation is facilitated, air flow is smooth, carbon dioxide accumulation can be effectively reduced, excessive face temperature and face surface bacteria breeding are prevented in the using process, face acne or germ infection and the like are prevented, and using comfort is improved.
In order to effectively match air intake and exhaust with the breathing rhythm of a wearer, closed-loop fine ventilation regulation and control are implemented through sensing information and information processing, so that the use comfort degree is obtained to the maximum extent.
The air inlet fan 9 and the exhaust fan 8 are both provided with filter sheets. The filter sheet can be arranged on one surface of the air inlet fan 9 and one surface of the exhaust fan 8 close to the human body, or on one surface of the air inlet fan 9 and one surface of the exhaust fan 8 far away from the human body, or on two sides of the air inlet fan 9 and the two sides of the exhaust fan 8.
The mask body 1 is made of transparent materials, and the air inlet fan 9 and the exhaust fan 8 are symmetrically arranged on two sides of the mask body 1. Mask body 1 adopts transparent material to solve wearing the facial problem of sheltering from, work and social activity are inconvenient.
The mask body 1 is also provided with an audio amplification device, and the audio amplification device is connected with the power supply 12; the audio amplification device comprises a microphone 5, an amplifier 6 connected with the microphone 5 and a loudspeaker 11 connected with the amplifier 6. The audio amplifying device mainly comprises a microphone 5, an amplifier 6 and a loudspeaker 11, as shown in fig. 3. Choose miniature patch microphone 5 for use, the model: WM 7231; mini-amplifier 6, type: PAM 8403; micro speaker 11, model: 1525-D8-0.5W. The mask is fixed by a head ring, and a battery and a part of electronic components are placed on the head ring, so that the weight of the mask body 1 is reduced.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (9)
1. A ventilation system, characterized by: the device comprises a processor, an exhaust fan for exhausting, an air inlet fan for air inlet, a power amplifier A and a power amplifier B; the air inlet fan is connected with the processor through a power amplifier A, and the exhaust fan is connected with the processor through a power amplifier B.
2. A ventilation system, characterized by: the air pressure sensor is used for sensing air pressure, the exhaust fan is used for exhausting air, the air inlet fan is used for air inlet, and the air pressure sensor also comprises a processor, a power amplifier A and a power amplifier B; the air pressure sensor is connected with the processor; the air inlet fan is connected with the processor through a power amplifier A, and the exhaust fan is connected with the processor through a power amplifier B.
3. A mask provided with the ventilation system of claim 1 or 2, characterized in that: set up including gauze mask main part and symmetry the gauze mask area of gauze mask main part both sides, ventilation system sets up in the gauze mask main part, still be provided with in the gauze mask main part and be used for the power of ventilation system power supply.
4. A mask according to claim 3, wherein: the air inlet fan and the exhaust fan are both provided with filter sheets.
5. The mask according to claim 3 or 4, wherein: the mask main body is made of transparent materials, and the air inlet fan and the exhaust fan are symmetrically arranged on two sides of the mask main body.
6. A mask according to claim 3, wherein: the higher the air pressure is, the higher the output voltage of the air pressure sensor is, and the algorithm adopted by the ventilation system comprises the following steps:
(1.1) the processor samples its input signal, the input signal is the signal from the output of the baroceptor; calculating an average value u for N samples of an input signal0And store u0N is a positive integer, N > 1; constantly updating and storing u0，u0Represents the average value of the air pressure;
(1.2) collecting L input signal sampling points, and calculating an average value u of M sampling points1And satisfies 1 < M < L < N, u1Representing the current air pressure value; continuously collecting signal samples and calculating the average value u for each L input signal samples according to the method1Then compare u1And u0A value of (d); if u is1≥u0Indicating that the current air pressure value is higher than or equal to the average air pressure value, executing the step (1.3); if u is1＜u0Indicating that the current air pressure value is lower than the average air pressure value, and executing the step (1.4);
(1.3) the processor outputs two voltage averages yA＝v1，yB＝v2Thereby causing the output of the power amplifier AAverage value of corresponding current I1The power amplifier B outputs a corresponding current average value I2And satisfy v2≥v1,I2≥I1；
(1.4) the processor outputs two voltage averages yA＝v3，yB＝v4Thereby causing the power amplifier A to output a corresponding current average value I3The power amplifier B outputs a corresponding current average value I4And satisfy v3＞v4,I3＞I4。
7. A mask according to claim 3, wherein: the mask body is also provided with an audio amplification device, and the audio amplification device is connected with the power supply; the audio amplification device comprises a microphone, an amplifier connected with the microphone and a loudspeaker connected with the amplifier.
8. The mask of claim 7 wherein: the mask body is also provided with a transparent eye protection sheet.
9. A mask according to claim 3, wherein: the algorithm adopted by the ventilation system comprises the following steps:
(2.1) the processor samples an input signal of the processor, wherein the input signal is an output signal of the air pressure sensor; calculating an average value u for N samples of an input signal0And store u0N is a positive integer, N > 1; constantly updating and storing u0，u0Represents the average value of the air pressure;
(2.2) collecting L input signal sampling points, and calculating an average value u of M sampling points1And satisfies 1 < M < L < N, u1Representing the current air pressure value; continuously collecting signal samples and calculating the average value u for each L input signal samples according to the method1Then compare u1And u0The value of (c). If u is1≥u0Indicating that the current barometric pressure value is lower than or equal toEqual to the average value of the air pressure, and executing the step (2.3); if u is1＜u0Indicating that the current air pressure value is higher than the average air pressure value, executing the following step (2.4);
(2.3) the processor outputs two voltage averages yA＝v1，yB＝v2Thereby causing the power amplifier A to output a corresponding current average value I1The power amplifier B outputs a corresponding current average value I2And satisfy v1≥v2,I1≥I2；
(2.4) the processor outputs two voltage averages yA＝v3，yB＝v4Thereby causing the power amplifier A to output a corresponding current average value I3The power amplifier B outputs a corresponding current average value I4And satisfy v4＞v3,I4＞I3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773740.4A CN111973905A (en) | 2020-08-04 | 2020-08-04 | Gauze mask and ventilation system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773740.4A CN111973905A (en) | 2020-08-04 | 2020-08-04 | Gauze mask and ventilation system thereof |
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| CN111973905A true CN111973905A (en) | 2020-11-24 |
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| CN202010773740.4A Pending CN111973905A (en) | 2020-08-04 | 2020-08-04 | Gauze mask and ventilation system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023150499A1 (en) * | 2022-02-04 | 2023-08-10 | William Maxwell | A mask configured for pressure maintenance |
| EP4267256A4 (en) * | 2020-12-24 | 2024-02-21 | Razer Asia Pacific Pte Ltd | Face masks and method of fabricating face mask |
-
2020
- 2020-08-04 CN CN202010773740.4A patent/CN111973905A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4267256A4 (en) * | 2020-12-24 | 2024-02-21 | Razer Asia Pacific Pte Ltd | Face masks and method of fabricating face mask |
| WO2023150499A1 (en) * | 2022-02-04 | 2023-08-10 | William Maxwell | A mask configured for pressure maintenance |
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