CN112770814B - Anti-pollution mask and control method - Google Patents
Anti-pollution mask and control method Download PDFInfo
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- CN112770814B CN112770814B CN201980063446.XA CN201980063446A CN112770814B CN 112770814 B CN112770814 B CN 112770814B CN 201980063446 A CN201980063446 A CN 201980063446A CN 112770814 B CN112770814 B CN 112770814B
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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
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
Abstract
Active fan assisted contamination masks utilize optical sensors to detect the rotation of the fan and to detect the rotational speed during fan rotation. Based on the analysis of the optical sensor signal, a respiratory cycle detection and/or an automatic on and/or off function of the fan is achieved. The use of optical sensors provides a low cost and compact way to implement the automatic control function. Since the detection is based on optical analysis of the fan rotation rather than fan electrical signal analysis, it does not require any specific fan design.
Description
Technical Field
The present invention relates to a pollution-resistant mask for providing filtered air to the wearer of the mask under an air flow assisted by a fan.
Background
Since the air pollution problem does not improve significantly in a short period of time, the only way to solve this problem is to wear a mask that can provide cleaner air by filtration. To improve comfort and effectiveness, one or two fans may be added to the mask.
The benefit to the wearer of the use of a powered mask is that the slight tension in the lungs caused by inhalation against the resistance of the filter in a conventional unpowered mask is alleviated.
Furthermore, in conventional non-powered masks, inhalation may also cause slight negative pressure within the mask, resulting in leakage of contaminants into the mask, which may prove dangerous if these contaminants are toxic substances. The power mask delivers a steady flow of air to the face and may, for example, provide a slight positive pressure (which may be determined by the resistance of the exhalation valve) to ensure leakage outwardly rather than inwardly.
There are several advantages if the operation or speed of the fan is regulated. This may be used to improve comfort through more appropriate ventilation during inhalation and exhalation sequences, or may be used to improve electrical efficiency. The latter means longer battery life or increased ventilation. Both of these aspects need to be improved in current designs.
To adjust the fan speed, the pressure inside the mask may be measured and both the pressure and the pressure variation may be used to control the fan.
For example, the pressure inside the mask may be measured by a pressure sensor, and the fan speed may be varied based on the measurements of the sensor, e.g., based on detecting the inspiration and expiration phases. Pressure sensors are expensive and it is therefore desirable to provide an alternative method.
Fan operated masks are battery operated devices and it is therefore desirable to minimize power consumption while keeping costs to a minimum. One problem is that when the mask is not being worn, the fan may remain on, which may result in unnecessary power consumption. Sensors dedicated to detecting when the mask is worn may be provided, but this increases the cost of the respiratory mask.
When wearing the mask, the user typically activates a switch to turn on the fan. The switch increases the cost of the mask, occupies space and is inconvenient to turn on. The automatic electronic switch-on function will avoid these drawbacks. However, this also typically requires a dedicated sensor to sense the use of the mask.
It is therefore desirable to find a low cost solution for at least providing an automatic opening and/or closing function, e.g. based on detecting whether a mask is worn.
Disclosure of Invention
The invention is defined by the claims.
According to an example of one aspect of the present invention, there is provided an anti-pollution mask comprising:
an air chamber;
a fan for drawing air into the air chamber from outside the air chamber and/or drawing air from inside the air chamber to outside.
An optical sensor for detecting rotation of the fan and detecting a rotation speed during rotation of the fan; and
a controller (30) adapted to, based on an analysis of the optical sensor signal:
realizing the automatic opening and/or closing function of the fan; and/or
The breathing cycle of the user is detected.
The invention relates to an anti-pollution mask. By this is meant a device whose main purpose is to filter ambient air to be breathed by a user. The mask does not perform any form of patient treatment. In particular, the pressure level and flow generated by the operation of the fan is used only to provide comfort (by affecting the temperature or relative humidity in the air chamber) and/or to assist in providing flow through the filter without requiring additional significant respiratory effort by the user. The mask does not provide overall respiratory assistance compared to the case where the user is not wearing the mask.
A fan may be used to provide increased pressure in the air chamber (e.g., airflow into the air chamber during inhalation). In this case only a small increased pressure needs to be provided, for example for assisting the inhalation of the user.
The fan may alternatively be used only to draw air from the interior of the air chamber to the exterior. In this way, the supply of fresh filtered air to the air chamber may be facilitated even during exhalation, which improves the comfort of the user. In this case, the pressure in the air chamber may for example always be lower than the external (atmospheric) pressure, so that fresh air is always supplied to the face. However, during exhalation, if the fan speed is slow or the amount of exhalation is large, the pressure may still be higher than ambient pressure.
Thus, fans have different possible intended functions.
The use of an optical sensor provides a low cost and compact way to implement an auto-on function and/or an auto-off function. Since the detection is based on an optical analysis of the fan rotation, rather than an analysis of the fan electrical signal, it does not require any specific fan design.
The controller is adapted to implement an automatic control function.
The automatic control function may include an automatic fan turn-on function based on detecting a fan rotation caused by a user's breath without activating the fan. In this way, the fan rotation need only be detected by powering the optical sensor, and the user's breath will create enough fan movement to detect.
The controller is adapted to operate in a discontinuous optical sensing mode, for example, when the fan is off. This saves power.
The automatic control function implemented by the controller may be a fan automatic shut-off function based on detecting a uniform fan speed.
The uniform speed indicates that the mask is not being worn.
By determining whether the mask is not worn, the mask design may save power. In particular, if the fan speed is not adjusted by the user's breath, it is indicated that the mask is not being worn. When it is detected that the mask is not being worn, the fan may be turned off.
The automatic control function implemented by the controller may be, for example, detecting a user's breathing cycle based on detecting a change in fan speed over time.
In this way, the fan can be controlled based on the breathing pattern of the user. Additionally or alternatively, the outlet valve may be controlled according to the phase of the breathing cycle, or the fan may be turned off during the inspiration time. This may be used to save nick power. It may be desirable for a user not having difficulty breathing through the filter to turn off the fan during inhalation to save power (if configured in this way).
The controller may be adapted to detect a breathing frequency of the user based on detecting a change in the fan speed over time and to control the fan in accordance with the breathing frequency. For example, if the user breathes faster, the fan speed may increase, which may indicate that the user is exercising.
The mask may further comprise a filter that forms a boundary directly between the air chamber and the ambient environment outside the air chamber. The user thus breathes through the filter. The filter may comprise an outer wall of the air chamber.
The filter forms a boundary directly between the air chamber and the surrounding environment outside the air chamber. This provides a compact arrangement which avoids the need for a flow transmission channel. This means that the user can breathe through the filter. The filter may have multiple layers. For example, the outer layer may form the body (e.g., fabric layer) of the mask, while the inner layer may be used to remove finer contaminants. The inner layer may then be removable for cleaning or replacement, but as air is able to pass through the structure and the structure performs a filtering function, the two layers together may be considered to constitute a filter.
Thus, the filter preferably comprises an outer wall of the air chamber and optionally one or more further filter layers. This provides a particularly compact arrangement and achieves a large filtering area, since the mask body performs the filtering function. Thus, when the user inhales, ambient air is provided directly to the user through the filter.
The mask may further comprise an outlet valve for controllably venting the air chamber to the outside, or an inlet valve for introducing air from the outside into the air chamber, wherein the valve comprises a passive pressure regulating check valve or an actively driven electrically controlled valve.
This may be used to make the mask more comfortable. During inspiration, the intake of unfiltered air may be prevented by actively or passively closing the valve. During inspiration, the valve is opened, thereby expelling exhaled air.
The optical sensor may include:
a light source and a light detector on opposite sides of the fan; or alternatively
A light source and a light detector on one side of the fan, and a reflector on the fan.
Thus, the optical sensor has different options.
The invention also provides a non-therapeutic method of controlling a pollution mask comprising:
extracting air into the air chamber from outside the air chamber and/or extracting air from inside the air chamber to outside using a fan;
detecting rotation of the fan using an optical sensor and detecting a rotation speed during rotation; and based on analysis of the detected rotation:
realizing the automatic opening and/or closing function of the fan; and/or
The breathing cycle of the user is detected.
The method may include:
the automatic opening function of the fan is realized by detecting the rotation of the fan caused by the respiration of the user when the fan is not activated; and/or
The automatic closing function of the fan is realized by detecting the uniform fan speed.
The method may include:
detecting a respiratory cycle of the user based on detecting a change in fan speed over time; and/or
The respiratory rate of the user is detected based on detecting a change in the fan speed over time, and the fan is controlled in accordance with the respiratory rate.
The invention also provides a computer program comprising computer program code means adapted to implement the method as described above when said program is run on a computer.
Drawings
Examples of the present invention will now be described in detail with reference to the accompanying drawings, in which:
FIG. 1 illustrates a mask in which fan rotation may be detected;
FIG. 2 illustrates one example of components of the system of FIG. 1; FIG. 3 illustrates a typical waveform of an optical sensor signal;
FIG. 4 illustrates various possible light intensity patterns;
FIG. 5 is a diagram for explaining the auto-on function;
FIG. 6 is a diagram for explaining the auto-close function; and is also provided with
Figure 7 illustrates a mask operation method.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
It should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the apparatus, system, and method, are intended for purposes of illustration only and are not intended to limit the scope of the invention. These and other features, aspects, and advantages of the apparatus, system, and method of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings. It should be understood that the drawings are merely schematic and are not drawn to scale. It should also be understood that the same reference numerals are used throughout the figures to designate the same or similar parts.
The present invention provides an active fan assisted anti-contamination mask that utilizes an optical sensor to detect the rotation of the fan and to detect the rotational speed during the rotation of the fan. Based on the analysis of the optical sensor signal, a respiratory cycle detection and/or an automatic on and/or off function of the fan is achieved. The use of optical sensors provides a low cost and compact way to implement the automatic control function. Since the detection is based on optical analysis of the fan rotation rather than fan electrical signal analysis, it does not require any specific fan design.
Thus, the automatic control function detects the breathing characteristics of the user based on an optical analysis of the fan rotation. These breathing characteristics include, for example, whether the user is breathing towards the mask, and/or the time of their inspiration and expiration.
Fig. 1 shows a mask in which rotation of the fan may be detected.
The subject 10 is shown wearing a mask 12 that covers the nose and mouth of the subject. The mask functions to filter the air prior to breathing the air. For this purpose, the mask body itself serves as an air filter 16. Air is drawn into the air chamber 18 formed by the mask by inhalation. In one example, during inspiration, an outlet valve 22, such as a check valve, is closed due to the low pressure in the air chamber 18.
The filter 16 may be formed solely of the body of the mask, or there may be multiple layers. For example, the mask body may include an outer cover formed of a porous textile material that acts as a prefilter. Inside the housing, a finer filter layer is reversibly attached to the housing. The finer filter layer may then be removed for cleaning and replacement, while the outer cover may be cleaned, for example, by wiping. The mask also performs a filtering function, such as protecting the finer filter from large debris (e.g., dirt), while the finer filter filters fine particulate matter. There may be more than two layers. The multiple layers together act as an integral filter for the mask.
Taking an exhalation fan as an example, when the subject exhales, air is expelled through the outlet valve 22. This valve is opened to facilitate exhalation, but closed during inhalation. Fan 20 assists in exhausting air through outlet valve 22. Preferably, more air is removed than exhaled, so that additional air is supplied to the face. Comfort is increased due to reduced relative humidity and cooling. By closing the valve during inhalation, the inhalation of unfiltered air is prevented.
Thus, the timing of the outlet valve 22 is dependent on the breathing cycle of the subject. The outlet valve may be a simple passive check valve operated by a pressure differential across the filter 16. However, it may be an electronically controlled valve.
When the mask is donned, the pressure within the enclosure will vary according to the breathing cycle of the subject. When the subject exhales, the pressure will increase slightly, and when the subject inhales, the pressure will drop slightly.
If the fan is driven at a constant drive level (i.e., voltage), different dominant pressures will cause different loads to the fan due to the different pressure drops across the fan. This changing load will then result in a different fan speed.
The present invention utilizes optical detection of fan speed. An optical sensor 24 is provided for detecting the rotation of the fan and detecting the rotational speed during the rotation of the fan.
FIG. 2 illustrates one example of a system component. The same reference numerals are used for the same components as in fig. 1.
In addition to the components shown in fig. 1, fig. 2 also shows a controller 30 and a local battery 32, and also shows that the optical sensor 24 includes a light source 24a and a light detector 24b.
The fan 20 includes a set of fan blades 20a and a fan motor 20b. In one example, the fan motor 20b is an electronically commutated brushless motor.
The optical sensor 24 includes a light source 24a on one side of the fan blade and a light detector on the opposite side of the fan blade. Thus, when there is a gap between the fan blades, light reaches the detector, and when the fan blades are in space, the light is blocked.
Fig. 3 shows a typical waveform of an optical sensor signal, expressed in terms of light intensity versus time. The peaks of light intensity correspond to light passing through the gaps between the fan blades, while the valleys correspond to light blocked by the fan blades. The time period T represents the fan speed.
Thus, by monitoring the time period, the fan speed can be monitored. This in turn enables the fan load to be monitored as opposed to inhaling and exhaling when the mask is worn, whereas the fan load will be more constant when the mask is not worn. Taking an exhalation fan as an example, during exhalation, the rotational speed of the fan will increase due to the flow of exhaled air, resulting in a higher frequency. During inspiration, the rotational speed of the fan will decrease (as compared to expiration).
Fig. 4 shows various possible light intensity patterns.
Fig. 4 (a) shows a fully off state, in which the light sensor has been turned off and there is no light sensor signal.
Fig. 4 (B) shows the light intensity during inhalation.
Fig. 4 (C) shows the light intensity during exhalation, the fan speed being faster than inhalation (for example, an exhalation fan).
Fig. 4 (D) shows how the frequency (corresponding to the inverse of the time period T in fig. 3) varies with time during normal breathing.
The present invention utilizes fan speed information to provide automatic fan control. The most basic function is an auto-on function or an auto-off function.
However, in addition, automatic adjustment of the fan rotation may be achieved according to the breathing pattern (i.e., inhalation and exhalation). In addition, on-demand airflow delivery may be achieved based on user activity (e.g., sitting, walking, running, cycling).
These functions can provide a fully customized experience for consumers and meet their comfort, adequate air circulation, and energy conservation needs in various user scenarios.
Fig. 5 is a diagram for explaining the auto-on function.
From time t0 to t1, the fan is off and the mask is not worn, so there is no fan rotation.
Beginning at time t1, the user wears a mask. There is a fan rotation caused by the user's breath. For example, the user may be required to blow into the fan to begin detecting the rotation of the fan. The optical sensor performs measurements periodically to detect fan rotation at time t 2. The fan is then turned on and continues to run without the user blowing into the fan.
Thus, the auto-on function of the fan is based on detecting a fan rotation caused by the user's breath when the fan is not activated (before time t 1), and a possibly discontinuous optical sensing pattern when the fan is off.
Discontinuous sensing modes can save power and exist in either off or standby states. For example, the sensor wakes up every few seconds, e.g., 2 seconds, 4 seconds, or longer.
Fig. 6 is used to illustrate the auto-close function.
From time t0 to t1, the fan has been turned on and the mask is worn. The fan rotation speed follows a period that depends on the breathing pattern of the user, so that there is a maximum frequency f max And a minimum frequency f min 。
This represents the normal operation of the mask, which may be defined as a continuous mode in which the optical sensor continuously records and processes the light intensity signal of the photodetector.
The user removes the mask at time t 1. The fan is still driven but there is no longer an adjustment of the fan speed caused by the user's breathing. This change is detected and the fan has been turned off.
For example, during normal use, a period of time, e.g., 4 seconds or 8 seconds, for the fan to rotate is recorded and the frequency is calculated for that period of time. During which the maximum and minimum frequency f is determined max And f min 。
The difference f can then be max -f min And a threshold f predetermined based on actual testing Threshold value A comparison is made.
If the difference f max -f min Less than threshold f Threshold value No breath is detected and an OFF signal is sent to the controller to turn OFF the fan.
Thus, the auto-off function of the fan is based on detecting a uniform fan speed.
As described above (best shown in fig. 4 and 6), the breathing pattern changes the rotational speed of the fan.
This means that optical sensing can be used to detect respiratory cycles, i.e. inspiration and expiration times.
If an electronically switched outlet valve is used, the breathing cycle timing information may then be used to control the outlet valve 22 in accordance with the phase of the breathing cycle. In addition to controlling the outlet valve, the controller may also turn off the fan during inspiration time or expiration time.
The fan speed may also be used to monitor the activity level of the user. For example, when the frequency of the light intensity pattern increases and reaches a certain value, it may be determined that the user is performing a high intensity activity. The fan speed may be increased to further assist the user in breathing.
The light source of the optical sensor may take any suitable form. One example is that existing light output indicators may be used so that there is no additional component cost. Small low cost photodetectors may also be available.
Fig. 2 shows the light source and detector on opposite sides of the fan, but a reflective fan blade or reflective pad applied to the fan blade may be used so that the light source and detector may be on the same side to give a compact arrangement.
As another alternative, light from a light source (which may be mounted on top of the PCB, for example) may be transmitted to the area of the fan blade using light guides. The light detector may then detect light directly or reflected light. The light guide may transfer light radially inward from the radially outer side of the fan blade, which may then reflect the radial light to a detector, for example, on the bottom side of the PCB. The light source may have other functions, such as an "ON" indicator light being lit, and the light guide simply derives some of the output light to be used as sensing light.
The fan is typically a centrifugal or axial fan.
Fig. 7 illustrates a method of operation of the mask, comprising:
in step 70, air is drawn from outside the air chamber to the air chamber and/or air is drawn from inside the air chamber to the outside using a fan;
in step 72, the rotation of the fan is detected, and during the rotation, the rotation speed is detected; and is also provided with
In step 74, an automatic fan on and/or off function is implemented based on an analysis of the detected rotation.
The method may further comprise:
in step 76, the user's breathing cycle is detected based on detecting the change in fan speed over time; and/or
In step 78, the user's breathing rate is detected based on detecting the change in fan speed over time, and the fan is controlled in accordance with the breathing rate.
It will be seen that the present invention may be applied to many different mask designs, with fan assisted inhalation or exhalation, and air chambers formed by filtering membranes or sealed air chambers.
Thus, one option as described above is to use a fan only for sucking air from inside the air chamber to the outside, e.g. when the exhaust valve is open. In this case, the pressure inside the mask volume may be kept below the external atmospheric pressure by a fan so that clean filtered air will flow cleanly into the mask volume during exhalation. Thus, low pressure may be caused by the fan during exhalation and by the user during inhalation (when the fan may be off).
Another option is to use a fan only for drawing air from the surrounding environment into the air chamber interior. In this case, the fan operates to increase the pressure in the air chamber, but the maximum pressure in the air chamber in use remains 4cmH higher than the pressure outside the air chamber 2 Below O, in particular because high pressure is not intended to assist breathing. Therefore, a low power fan may be used.
In all cases, the pressure inside the air chamber is preferably kept below 2cmH above the external atmospheric pressure 2 O, or even below 1cmH 2 O or even below 0.5cmH 2 O. Thus, the anti-contamination mask is not used to provide continuous positive airway pressure and is not a mask for delivering therapy to a patient.
The mask is preferably battery-operated, and therefore low power operation is of particular concern.
As described above, embodiments utilize controllers that may be implemented in a variety of ways in software and/or hardware to perform the various functions required. A processor is one example of a controller that employs one or more microprocessors that may be programmed with software (e.g., microcode) to perform the required functions. However, a controller may be implemented with or without a processor, and may also be implemented as a combination of dedicated hardware for performing some functions and a processor (e.g., one or more programmed microprocessors and associated circuitry) for performing other functions.
Examples of controller components that may be used in various embodiments of the present disclosure include, but are not limited to, conventional microprocessors, application Specific Integrated Circuits (ASICs), and Field Programmable Gate Arrays (FPGAs).
In various implementations, the processor or controller may be associated with one or more storage media, such as volatile and non-volatile computer memory, such as RAM, PROM, EPROM and EEPROM. The storage medium may be encoded with one or more programs that, when executed on one or more processors and/or controllers, perform the desired functions. The various storage media may be fixed within the processor or controller or may be transportable such that the one or more programs stored thereon can be loaded into the processor or controller.
Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Although specific measures are recited in mutually different dependent claims, this does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.
Claims (14)
1. An anti-contamination mask comprising:
an air chamber (18);
a fan (20) for drawing air into the air chamber (18) from outside the air chamber and/or drawing air from inside the air chamber to the outside;
an optical sensor (24) for detecting rotation of the fan and detecting a rotational speed during rotation of the fan; and
a controller (30) adapted to implement an automatic turn-on function of the fan based on detecting a fan rotation caused by a user's breath without activating the fan.
2. The mask according to claim 1, wherein the controller (30) is adapted to, based on an analysis of the signal of the optical sensor:
realizing the automatic closing function of the fan; and/or
The breathing cycle of the user is detected.
3. The mask according to claim 1, wherein the controller (30) is adapted to operate in a discontinuous optical sensing mode when the fan is off.
4. The mask according to claim 2, wherein the controller (30) is adapted to implement the auto-off function of the fan based on detecting a uniform fan speed.
5. The mask according to claim 2, wherein the controller (30) is adapted to detect the breathing cycle of the user based on detecting a change in fan speed over time.
6. The mask according to claim 2, wherein the controller (30) is adapted to: a respiratory rate of a user is detected based on detecting a change in fan speed over time, and the fan is controlled in accordance with the respiratory rate.
7. The mask according to any one of claims 1-6, further comprising a filter (16) that forms a boundary directly between the air chamber and an ambient environment external to the air chamber.
8. The mask of claim 7, wherein the filter comprises an outer wall of the air chamber.
9. The mask according to any one of claims 1 to 6, further comprising a valve (22) for controllably venting the air chamber (18) to the outside or introducing air from the outside into the air chamber, wherein the valve (22) comprises a passive pressure regulating check valve or an actively driven electrically controlled valve.
10. The mask according to any one of claims 1-6, wherein the optical sensor (24) comprises:
a light source (24 a) and a light detector (24 b) on opposite sides of the fan; or alternatively
A light source (24 a) and a light detector (24 b) on one side of the fan, and a reflector on the fan.
11. A non-therapeutic method of controlling a contamination mask comprising:
(70) Extracting air into an air chamber (18) from outside the air chamber and/or extracting air from inside the air chamber to the outside using a fan;
(72) Detecting rotation of the fan using an optical sensor, and detecting a rotation speed during rotation; and, based on analysis of the detected rotation: (74) The auto-on function of the fan is implemented based on detecting a rotation of the fan caused by a user's breath without activating the fan.
12. The method of claim 11, comprising:
detecting a respiratory cycle of the user; and/or
The automatic shut-off function of the fan is achieved by detecting a uniform fan speed.
13. The method of claim 12, comprising:
(76) Detecting the breathing cycle of the user based on detecting a change in fan speed over time; and/or
(78) A respiratory rate of a user is detected based on detecting a change in fan speed over time, and the fan is controlled in accordance with the respiratory rate.
14. A computer readable medium storing computer program code means adapted to implement the method of any one of claims 11 to 13 when the program is run by a controller of an anti-pollution mask according to any one of claims 1 to 10.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018107705 | 2018-09-26 | ||
| CNPCT/CN2018/107705 | 2018-09-26 | ||
| EP18214381.8A EP3669948A1 (en) | 2018-12-20 | 2018-12-20 | A pollution mask and control method |
| EP18214381.8 | 2018-12-20 | ||
| PCT/EP2019/075098 WO2020064476A1 (en) | 2018-09-26 | 2019-09-19 | A pollution mask and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112770814A CN112770814A (en) | 2021-05-07 |
| CN112770814B true CN112770814B (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980063446.XA Active CN112770814B (en) | 2018-09-26 | 2019-09-19 | Anti-pollution mask and control method |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3856359B1 (en) |
| JP (1) | JP6944088B1 (en) |
| CN (1) | CN112770814B (en) |
| WO (1) | WO2020064476A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073683A (en) * | 2007-06-25 | 2007-11-21 | 朱伟 | Intermittent air-blowing appliance for treating sleep-respiratory disorder and its control |
| CN101516451A (en) * | 2006-10-04 | 2009-08-26 | 兴研株式会社 | Mask device with blower |
| CN201461478U (en) * | 2009-06-10 | 2010-05-12 | 英业达科技有限公司 | Fan device |
| US20120167879A1 (en) * | 2011-01-03 | 2012-07-05 | Bowman Bruce R | Positive airway pressure therapy apparatus and methods |
| US20150114389A1 (en) * | 2013-10-24 | 2015-04-30 | 3M Innovative Properties Company | Heating for powered air unit |
| CN105396206A (en) * | 2015-11-27 | 2016-03-16 | 江苏鹿得医疗电子股份有限公司 | Intermittent air supply type medical ultrasonic nebulizer with inspiration induction |
| CN205814832U (en) * | 2016-05-30 | 2016-12-21 | 北京高原蓝科技有限责任公司 | Breathing mask adjusts micro-distance control apparatus of rotation speed of fan automatically |
| CN107073375A (en) * | 2014-11-21 | 2017-08-18 | 三菱电机株式会社 | Air purifier |
| CN206542951U (en) * | 2017-03-10 | 2017-10-10 | 马文清 | Aid in into outlet haze mouth mask |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012033852A1 (en) * | 2010-09-07 | 2012-03-15 | Nextteq Llc | Remaining service life indication for gas mask cartridges and canisters |
| WO2013039153A1 (en) * | 2011-09-15 | 2013-03-21 | 独立行政法人国立高等専門学校機構 | Respiratory protective tool provided with electric fan |
| JP6124733B2 (en) * | 2013-08-19 | 2017-05-10 | 株式会社重松製作所 | Breathing apparatus |
-
2019
- 2019-09-19 JP JP2021510301A patent/JP6944088B1/en active Active
- 2019-09-19 CN CN201980063446.XA patent/CN112770814B/en active Active
- 2019-09-19 WO PCT/EP2019/075098 patent/WO2020064476A1/en unknown
- 2019-09-19 EP EP19769803.8A patent/EP3856359B1/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516451A (en) * | 2006-10-04 | 2009-08-26 | 兴研株式会社 | Mask device with blower |
| CN101073683A (en) * | 2007-06-25 | 2007-11-21 | 朱伟 | Intermittent air-blowing appliance for treating sleep-respiratory disorder and its control |
| CN201461478U (en) * | 2009-06-10 | 2010-05-12 | 英业达科技有限公司 | Fan device |
| US20120167879A1 (en) * | 2011-01-03 | 2012-07-05 | Bowman Bruce R | Positive airway pressure therapy apparatus and methods |
| US20150114389A1 (en) * | 2013-10-24 | 2015-04-30 | 3M Innovative Properties Company | Heating for powered air unit |
| CN107073375A (en) * | 2014-11-21 | 2017-08-18 | 三菱电机株式会社 | Air purifier |
| CN105396206A (en) * | 2015-11-27 | 2016-03-16 | 江苏鹿得医疗电子股份有限公司 | Intermittent air supply type medical ultrasonic nebulizer with inspiration induction |
| CN205814832U (en) * | 2016-05-30 | 2016-12-21 | 北京高原蓝科技有限责任公司 | Breathing mask adjusts micro-distance control apparatus of rotation speed of fan automatically |
| CN206542951U (en) * | 2017-03-10 | 2017-10-10 | 马文清 | Aid in into outlet haze mouth mask |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3856359A1 (en) | 2021-08-04 |
| WO2020064476A1 (en) | 2020-04-02 |
| JP2021529269A (en) | 2021-10-28 |
| EP3856359B1 (en) | 2022-06-15 |
| CN112770814A (en) | 2021-05-07 |
| JP6944088B1 (en) | 2021-10-06 |
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