CN106213623A - A kind of cloud mask of band PM2.5 sensor - Google Patents

Abstract

The present invention relates to daily living article technical field, a kind of cloud mask of band PM2.5 sensor, including cover, filter pulp, shell, bonnet and silicone rubber cover, through hole is offered in the middle part of shell, through hole is respectively arranged at two ends with buckle, filter pulp lid is connected by buckle with shell, filter pulp is clipped in the groove between filter pulp lid and shell formation filter course, cover is covered in filter pulp lid front end and is connected by Magnet with shell, shell is respectively arranged on the left side and the right side the pull switch controlled by ear-hang, shell rear portion is provided with bonnet, fan it is equiped with as vent in the middle part of bonnet, equipped with PM2.5 sensor below fan, rear cover back-end clamping has the silicone rubber cover with breather valve.This device has the cloud mask of the band PM2.5 sensor that air quality is detected by air cleaning, intensified dust removal, sterilizing deodoring, assisted respiartion, the function of potent filtration, and energy real-time on-site.

Description

A kind of cloud mask of band PM2.5 sensor

[technical field]

The present invention relates to daily living article technical field, the cloud mask of a kind of band PM2.5 sensor.

[background technology]

Protective port in the market be covered with cartoon cotton mask, common absorbent carbasus mask, disposable non-woven lint face mask, Active carbon mask, industrial anti-dust respirator, PM2.5 mask etc..

(1) cotton cloth type mask: the most only possessing warming function, mask surface pore is bigger, it is impossible to keep out particle diameter The particulate matter of only 2.5 microns, and part cotton mask gas-flow resistance is relatively big, people easily causes dyspnea after the wearing；

(2) cotton cloth respirator: hole is relatively big, and both sides, nostril adaptation is poor, and cotton cloth respirator is by machinery in layer Stop, bigger particulate matter can be stopped, but invalid to the particulate matter of PM2.5, and the thickest mask breathability is the poorest, if Do not note health, also can breed bacteria；

(3) active carbon mask: owing to activated carbon has the effect eliminated the unusual smell, but the protection efficiency of particulate matter is not had It is remarkably reinforced；Meanwhile, activated carbon self is also a kind of granule, it is possible to be inhaled by the wearer internal, to suffering from chronic respiratory It is a kind of harm on the contrary for the patient of disease or weakling；

(4) gas that disposable breathing mask is primarily directed to breathe out filters, and prevents the infection between doctors and patients, mask limit Edge is the most non-agrees with shape of face design, in most cases can only play the effect of blocking, can not effectively resist PM2.5 particulate matter.

(5) industrial anti-dust mask filtration efficiency reaches more than 90%, and PM2.5 particulate matter is had preferable protection effect, for Reducing resistance when exhaling, have is also equipped with outlet valve.

(6) PM2.5 protective mask: for the protective mask of PM2.5 particulate matter, owing to China there is presently no the appearance people Using mask standard, the PM2.5 mask quality on market is uneven.The protective mask of PM2.5 is divided into disposable formula mask and filter The big class of core type mask two.Disposable formula mask hygienic and convenient, single use, it is impossible to cleaning, consumption is many, use every day price to hold high Expensive；Filter element can repeatedly be changed by filer element type mask, can clean.The preventing principle of PM2.5 mask is by ultra-fine but non-woven Cloth surface carries out electrostatic electret so that it is surface produce micro-electrostatic field, the hole of filtering material just as numerous passive collecting electrode, When the submicron particles (including PM2.5 granule) in air-flow is by the space of material, just it is caught under the effect of electric field force Obtain,

Tradition mask product hole is bigger, it is impossible to keeps out particle diameter and only has the particulate matter of 2.5 microns, and part cotton mask gas Flow resistance is relatively big, and people easily causes dyspnea after the wearing, if not noting health, also can breed bacteria, thus slow to suffering from The property patient of respiratory tract disease or the health of weakling work the mischief.And industrial mask and the PM2.5 mask on existing market produces Product are primarily present under filter efficiency, poor air permeability, wear that adaptation is poor, easily grow harmful microorganism on filtering material, deposit In dye problems such as secondary dirts, but also the harmful bacteria in human body self exhaled gas cannot be killed.

[summary of the invention]

The present invention has broken the natural mode of traditional mask, asks for tradition mask and novel the above-mentioned of PM2.5 mask Topic, design a kind of there is air cleaning, band PM2.5 that air quality is detected by assisted respiartion, potent filtration, real-time on-site The cloud mask of sensor.

For the problems referred to above, design the cloud mask of a kind of band PM2.5 sensor, including cover, filter pulp, shell, bonnet and Silicone rubber cover, offers through hole in the middle part of described shell, through hole is respectively arranged at two ends with buckle, and filter pulp lid is connected by buckle with shell Connecing, filter pulp is clipped in the groove between filter pulp lid and shell formation filter course, and described cover covers in filter pulp lid front end and with outward Shell is connected by Magnet, and shell is respectively arranged on the left side and the right side the pull switch controlled by ear-hang, and shell rear portion is provided with bonnet, after Being equiped with fan in the middle part of lid as vent, fan is respectively provided on two sides with PCB and battery, in described PCB Being integrated with bluetooth and water ion assembly, equipped with PM2.5 sensor below fan, described rear cover back-end clamping has with breather valve Silicone rubber cover.

Described PM2.5 sensor includes an air chamber, laser generator and PCB, and air chamber upper and lower is respectively Being provided with air inlet and gas outlet, air chamber side is provided with laser generator and diaphragm, and laser generator launches laser as light source, edge Laser beam diaphragm inner chamber enter light side and light emission side is respectively equipped with perforate, air chamber opposite side connects with light trapping, before light trapping Holding tapered, form tapering being 38 ° is pyramidal structure, makes the laser beam through sample region produce refraction in pyramidal structure and disappears Removing, the laser beam after diaphragm filters veiling glare enters the sample region in air chamber, can send out when there being particulate matter to pass through air inlet Third contact of a total solar or lunar eclipse scattering phenomenon, the light intensity of scattering is linear with PM2.5 concentration, and the photodiode in PCB is by sample region Interior light intensity is converted to concentration change pulse voltage signal, then draws stable pulse electricity through signal screening and screening circuit Signal, and it is transferred to signals collecting and radio transmitter carries out data acquisition and transmission.

Described signals collecting and radio transmitter are controlled by chip U4, and signals collecting and radio transmitter are integrated in In PCB, No. 1 pin connecting resistance R6 of chip U4 is followed by the base stage to audion Q1, and the colelctor electrode of audion Q1 connects sharp Optical transistor D3 is followed by 5V power supply, and chip U4 controls Laser emission by controlling audion Q1 so that laser tube can be according to one Fixed frequency exports, the grounded emitter of audion Q1, and this chip U4 uses BLE-M Bluetooth chip, in this chip with AD conversion function, it is by No. 8 pin VCC termination 3.3V power at very low levels, and No. 15 pins of chip U4 are connected to antenna in order to carry out Wireless data sends, and No. 12 pins of chip U4 are connected to signal screening and screening circuit.

Described signal screening is controlled by chip U3 with screening circuit, and signal screening and screening circuit are integrated in PCB circuit On plate, being connected to resistance R3 between No. 7 pins and No. 6 pins of chip U3, another one end of extracting out connects ground connection after resistance R4, chip U3 No. 5 pins and No. 2 pins between be connected to No. 2 pins of resistance R5, chip U3 and No. 1 pin parallel connection is followed by electric capacity C6 and is followed by Ground, No. 3 pins of chip U3 connect the positive pole of photodiode D2, the minus earth of photodiode D2, and photodiode D2 will The laser signal that laser diode D3 launches is converted to concentration change pulse voltage signal, will by No. 7 pins of chip U3 Data transmit No. 12 pins to chip U4, and extract a termination capacitor C7 filtering out.

Described pull switch is arranged on shell, and shell is respectively arranged on the left side and the right side ear-hang, and ear-hang connects one can be elastic The frenulum of stretching, described frenulum connects toggle switch, and toggle switch is arranged in the PCB in shell, PCB Being connected to battery, PCB bottom is provided with pressing plate, and pressing plate compresses PCB and is fixed, and described pressing plate passes through screw Being tightened on shell, spring through spring thus is fixed on pressing plate by screw simultaneously, and described spring one end connects to be stirred out Closing, the other end of spring is fixed on pressing plate.

Described water ion assembly is powered by battery with needle electrode, needle electrode, in the effect of electrion Under the steam in the gas of characteristics of contaminated respiratory droplets carried out high pressure ionization, form nano-scale electronegative water microgranule.

Described bluetooth uses bluetooth 4.0, and PM2.5 sensor carries out data transmission reality by PCB and bluetooth 4.0 Time PM2.5 numerical value on the spot.

The present invention compared with the existing technology, has an advantage in that:

1. use the supporting multiple anti-haze filter cottons of cloud mask and multiple activated carbon filter cotton, can change very easily Filter pulp, to adapt to different environmental demands, anti-haze filter cotton can effectively filter PM2.5 particulate matter, and activated carbon filter cotton may filter that The harmful gas such as formaldehyde, benzene, Innovation & environment, reduce the use cost of consumer；

2. devise the PM2.5 sensor of novelty, utilize light scattering principle, using laser as light source, make veiling glare pass through Diaphragm filters, and the Concentration Testing of veiling glare is converted to concentration change pulse by the signal screening on circuit board and screening circuit Voltage signal, and utilize signals collecting and radio transmitter to carry out data exchange, the data precision of PM2.5 in the air of collection High；

3. this product cover part uses the design of floated air inlet, the slow down air directly shock to mask, the wettest Spending higher weather, whole mask material uses food grade plastics and silica gel material, it is simple to cleaning, comfortable wearing, silicone rubber cover Streamline moulding reduce maximum windage, moulding is light, can reach with human body face to be preferably combined, it is ensured that wearer's relaxes Adaptive；

4., with water ion assembly, utilize nanometer water ion technology to suppress pathogenic bacteria, mycete and anaphylactogen, improve air The health of quality maintenance people, is directly released into mask intracavity portion by water ion, not only can realize killing the outside entrance of mask Antibacterial, it is also possible to kill the harmful bacteria carried in the gas of characteristics of contaminated respiratory droplets；

5. on bonnet, it is provided with blower fan, by the suction smoothly being pumped with beneficially extraneous new wind of blower fan with by characteristics of contaminated respiratory droplets Wet dirty waste gas discharge in mask main body in time cover, it is to avoid the air inflow hole suction resistance caused because filter course is overstocked Excessive, sluggish in air circulation, the uncomfortable sensation of dirty moisture entrapment in cover；

6. use the pull switch of science, frenulum can adjusting elasticity the most voluntarily, and control between the on off state of mask Switching, when wearing open, power-off when taking off, energy-conservation, convenient and swift.

[accompanying drawing explanation]

Fig. 1 is the cloud Respirator structure schematic diagram of the present invention；

Fig. 2 is the cloud mask combination schematic diagram of the present invention；

Fig. 3 is the structural representation of PM2.5 sensor in the present invention；

Fig. 4 is PM2.5 sensor circuit structure connection diagram in the present invention；

Fig. 5 is signals collecting and radio transmitter figure in the present invention；

Fig. 6 is signal screening and screening circuit figure in invention；

Fig. 7 is the structural representation of pull switch in the present invention；

In figure: 1. cover 2. filter pulp lid 3. filter pulp 4. shell 5. ear-hang 6.PM2.5 sensor 7. bonnet 8. battery 9. breather valve 10. silicone rubber cover 11. pull switch 12. fan 13. bluetooth 14. water ion 15.PCB circuit board 16. is given vent to anger Mouth 17. laser generator 18. diaphragm 19. air inlet 20. light trapping 21. frenulum 22. ear-hang 23. spring 24. screws 25. pressing plates.

[detailed description of the invention]

The invention will be further described below in conjunction with the accompanying drawings, and the structure of this device and principle are for the people of this specialty It is the most clearly.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit this Invention.

Embodiment 1

The structure chart of this device sees Fig. 1 and Fig. 2, and this mask includes cover, filter pulp, shell, bonnet and silicone rubber cover, shell Middle part offers through hole, and through hole is respectively arranged at two ends with buckle, and filter pulp lid is connected by buckle with shell, and filter pulp is clipped in filter pulp lid And forming filter course in the groove between shell, cover is covered in filter pulp lid front end and is connected by Magnet with shell.One cloud mouth Cover can supporting filter pulps multiple, multiple, filter pulp can be changed very easily, to adapt to different environmental demands, i.e. 1 cloud mask is joined Sending multiple anti-haze filter cotton and multiple activated carbon filter cotton, anti-haze filter cotton can effectively filter PM2.5 particulate matter, and employing meets The filter cotton of N95 standard；Activated carbon filter cotton may filter that formaldehyde, benzene harmful gas, fully optimizes the use cost of consumer, more Add the consumption demand of laminating consumer.Cover part uses the design of floated air inlet, the slow down air directly shock to mask, The weather that especially humidity is higher.

This device is furnished with built-in silicagel pad at cloud mask, and it uses Novel environment-friendlymaterial material, by silicone rubber cover to face Differentiation is adjusted, and on the premise of respirator belt of need not too tying tight, it is possible to reach with human body face to be preferably combined, protects Demonstrate,prove the comfortableness of wearer.Bridge of the nose bar is placed in mask cover body, and the bridge of the nose of fitting gently, disperse mask certainly from structure The partial pressure that heavy sensation of the body amount is brought to ear, has stopped the basal part of the ear discomfort that wear time causes for a long time.Bonnet clamping simultaneously has band There is the silicone rubber cover of breather valve, use special anti-mist silicone rubber cover, increasing mask air-tightness further simultaneously, also efficiently solving The personage that wears glasses causes the problem of mist winter because wearing masks, and the quality of its softness also provides further peace for wearer Entirely.

Shell is respectively arranged on the left side and the right side the ear-hang with pull switch, sees Fig. 1 and Fig. 7, and ear-hang connects one and can elasticity draw The frenulum stretched, frenulum connects toggle switch, and toggle switch is arranged in the PCB in shell, and PCB is connected to electricity Pond, PCB bottom is provided with pressing plate, and pressing plate compresses PCB and is fixed, pressing plate by screw means on shell, Spring through spring thus is fixed on pressing plate by screw simultaneously, and spring one end connects toggle switch, and the other end of spring is fixed On pressing plate.Frenulum can adjusting elasticity the most voluntarily, and control the switching between the on off state of mask.Frenulum one end is connected to On ear-hang, ear-hang is connected with toggle switch, has spring to fix under waved switch, after user regulates frenulum degree of tightness, and will system When band is hooked on ear, frenulum is strained, and toggle switch is opened, and spring is tightened up by compression, when user is except lower mask, and frenulum Loosening, spring is released upsprings thus waved switch closedown.

Shell rear portion is provided with bonnet, is equiped with fan as vent in the middle part of bonnet.Fan uses mini fan, passes through wind The smooth of beneficially extraneous new wind that be pumped with of machine sucks and the wet dirty waste gas of characteristics of contaminated respiratory droplets is discharged in mask main body cover in time Outward, it is to avoid the air inflow hole suction resistance caused because filter course is overstocked is excessive, sluggish in air circulation, in cover, dirty dampness is stagnant The uncomfortable sensation stayed.

Fan is respectively provided on two sides with PCB and battery, equipped with PM2.5 sensor below fan.PM2.5 sensor bag Include an air chamber, laser generator and circuit board, the detail view of PM2.5 sensor see Fig. 3, air chamber upper and lower be respectively equipped with into QI KOU and gas outlet, air chamber side is provided with laser generator and diaphragm, and air chamber opposite side is provided with light trapping, and laser generator is launched Laser, as light source, utilizes light scattering principle, and light scattering phenomenon, the light intensity of scattering can occur when there being particulate matter to pass through air inlet Linear with PM2.5 concentration, be converted to pass through again with concentration change pulse voltage signal by the detection of photodiode Signal screening and screening circuit draw stable pulse electrical signal, and are transferred to signals collecting and radio transmitter carries out data Gather and send.The conversion of numerical value is carried out according to the given sampling period, by the numerical value collected according to the umber of pulse gathered It is transmitted to mobile phone terminal according to the form of 16 systems, is finally received relevant data by APP end, obtain real-time PM2.5 dense Angle value.

For mechanism of diaphragm, diaphragm inner chamber enter light side and light emission side is respectively equipped with perforate, main act as: enter light More veiling glare is filtered by the perforate of side, then filters a small amount of veiling glare through the perforate of light emission side, thus makes Light is all filtered, and through these a series of adjustment, the data collected substantially can be squared with reference instrument.

Laser beam after gathering need to be launched timely, does not interferes with the sampling of internal light, therefore, ad hoc Count the light trapping of tapered structure, before this design has been that laser beam is got in air, namely by the way of perforate, But natural light can enter into sample region by aperture, causes the inaccurate of data, owing to the front end of light trapping is tapered, Make the laser beam emitted produce refraction in pyramidal structure, thus avoid the light interference to sample region, simultaneously in order to Laser beam can be made just to occur refraction to eliminate, the tapering of pyramidal structure is set to about 38 °.

If being integrated with bluetooth, water ion assembly and the corresponding dry circuit controlling working sensor in PCB, including electricity Power-switching circuit, signals collecting and radio transmitter, operational amplification circuit, signal screening and screening circuit etc., circuit connects Schematic diagram sees Fig. 4.Wherein power-switching circuit is as power supply using the running voltage of the voltage of input to each chip, Due to the known circuits of the power-switching circuit many employings the art in this device, do not repeat at this, below to this dress Put middle optical circuit part to describe emphatically, optical circuit part mainly include circuit signal collection and radio transmitter, Signal screening and screening circuit.

The circuit theory diagrams of signals collecting and radio transmitter see Fig. 5, are mainly controlled by chip U4, and chip U4 uses BLE-M Bluetooth chip, carries AD conversion inside BLE-M, can save AD conversion chip by the AD conversion function carried so that Circuit is more succinct, and the concrete attachment structure of its circuit is: No. 1 pin connecting resistance R6 of chip U4 is followed by audion Q1's Base stage, the colelctor electrode of audion Q1 meets laser audion D3 and is followed by 5V power supply, and chip U4 controls laser by controlling audion Q1 Launch so that laser tube can export according to certain frequency, it is achieved the requirement of low-power consumption, and the emitter stage of audion Q1 connects Ground, this chip is terminated 3.3V power at very low levels by No. 8 pin VCC, and it is wireless in order to carry out that No. 15 pins of chip U4 are connected to antenna Data send, and No. 12 pins of chip U4 are connected to signal screening and screening circuit.

Signal screening sees Fig. 6 with the circuit theory diagrams of screening circuit, and this electricity router chip U3 controls, No. 7 of chip U3 Being connected to resistance R3 between pin and No. 6 pins, another one end of extracting out connects ground connection after resistance R4, No. 5 pins of chip U3 and No. 2 pipes No. 2 pins and No. 1 pin parallel connection that are connected to resistance R5, chip U3 between foot are followed by ground connection after electric capacity C6, No. 3 pins of chip U3 Connecing the positive pole of photodiode D2, the minus earth of photodiode D2, laser diode D3 is launched by photodiode D2 Laser signal is converted to concentration change pulse voltage signal, takes PM2.5 passage numerical value, by No. 7 pins of chip U3 by number According to No. 12 pins of transmission to chip U4, and extract a termination capacitor C7 filtering out.

This device suppresses pathogenic bacteria, mycete and anaphylactogen with water ion assembly, improves air quality and safeguards people's Health, water ion assembly is can be carried out the air planktons such as antibacterial, dust, formaldehyde, harmful substance actively by the speciality of water Remove.Water ion assembly is powered by battery with needle electrode, needle electrode, exhales human body under the effect of electrion Steam in the gas gone out carries out high pressure ionization, forms nano-scale electronegative water microgranule, and charged ion can be degerming, and Absorption can help drainage screen to adsorb fine solid particle granule on dust surface.Needle electrode is under the effect of electrion, by water Point progressively split into water smoke, ultimately form nano-scale electronegative water microgranule, diameter about nanometer water between 5-20nm Ion.Common anion, owing to being air ion, is easily had an effect with nitrogen and oxygen, will be disappeared behind several seconds after generation Losing, compare the air ion that traditional anion generator generates, nanometer water ion is water microgranule composition, exists in atmosphere Time be 6 times of general anion, with the help of air circulation system, the scope of covering is bigger, and this ensures nanometer water Ion can tell in home environment on a large scale.Nanometer water ion unit can produce 480,000,000,000 nanometer waters each second Ion, can fully meet the needs of human body 13,000,000,000 anion every day, owing to its hydroxy comprised (OH-) can will contact To antibacterial in hydrogen (H) extract out, therefore nanometer water ion can suppress and remove a lot of antibacterial, virus and anaphylactogen.Water from Water ion is directly released into mask intracavity portion by sub-component, and not only can realize killing the outside antibacterial entered of mask can also kill Go out the harmful bacteria carried in the gas of characteristics of contaminated respiratory droplets.

This device uses bluetooth 4.0 to be wirelessly transferred, and by mobile phone signal data, air quality information is uploaded high in the clouds, By the big data sharing in high in the clouds, smart mobile phone backstage, every day, environment weekly, monthly can be provided the most accurately to user Data value, even includes that in course of action, deathtrap is evaded in time, to the experience of the optimal air bodyguard of user.Currently Haze data main source be each data monitoring station limited in each city, and the indoor equipment data of some domestic. Muzzle can be with the air quality data in real time record movement locus and added up and prompt facility for band in the future, and online When having other users to use this product in road, his data also can become backstage and share, and real time propelling movement is up-to-date to approach user Air conditions.In addition to air quality is pointed out, also can increase such as humiture, ultraviolet, virus in air index etc., whenever and wherever possible Real-time on-site data refer is provided, can be understood by intelligent mobile phone terminal whenever and wherever possible and get home, in way, the traffic work taken The air quality situation in the places such as tool, office, and do data statistics and prompting function.

Claims (7)

1. a cloud mask for band PM2.5 sensor, including cover, filter pulp, shell, bonnet and silicone rubber cover, it is characterised in that institute Offering through hole in the middle part of the shell stated, through hole is respectively arranged at two ends with buckle, and filter pulp lid is connected by buckle with shell, and filter pulp presss from both sides Forming filter course in groove between filter pulp lid and shell, described cover covers in filter pulp lid front end and passes through Magnet with shell Being connected, shell is respectively arranged on the left side and the right side the pull switch controlled by ear-hang, and shell rear portion is provided with bonnet, installs in the middle part of bonnet Having fan as vent, fan is respectively provided on two sides with PCB and battery, and described PCB is integrated with bluetooth And water ion assembly, equipped with PM2.5 sensor below fan, described rear cover back-end clamping has the silicone rubber cover with breather valve.

The cloud mask of a kind of band PM2.5 sensor the most as claimed in claim 1, it is characterised in that described PM2.5 sensor Including an air chamber, laser generator and PCB, air chamber upper and lower is respectively equipped with air inlet and gas outlet, air chamber one Side is provided with laser generator and diaphragm, and laser generator launches laser as light source, enters light side along laser beam at diaphragm inner chamber And light emission side is respectively equipped with perforate, air chamber opposite side connects with light trapping, and light trapping front end is tapered, forms tapering and is 38 ° and is Pyramidal structure, makes the laser beam through sample region produce refraction in pyramidal structure and eliminates, after diaphragm filters veiling glare Laser beam enters the sample region in air chamber, and light scattering phenomenon can occur when there being particulate matter to pass through air inlet, the light intensity of scattering with PM2.5 concentration is linear, and the light intensity in sample region is converted to concentration change arteries and veins by the photodiode in PCB Rush voltage signal, then draw stable pulse electrical signal through signal screening and screening circuit, and be transferred to signals collecting and nothing Line radiating circuit carries out data acquisition and transmission.

The cloud mask of a kind of band PM2.5 sensor the most as claimed in claim 2, it is characterised in that described signals collecting and nothing Line radiating circuit is controlled by chip U4, and signals collecting and radio transmitter are integrated in PCB, No. 1 pipe of chip U4 Foot connecting resistance R6 is followed by the base stage to audion Q1, and the colelctor electrode of audion Q1 meets laser audion D3 and is followed by 5V power supply, chip U4 controls Laser emission by controlling audion Q1 so that laser tube can export according to certain frequency, audion Q1 Grounded emitter, this chip U4 uses BLE-M Bluetooth chip, and with AD conversion function in this chip, it is by No. 8 pin VCC Termination 3.3V power at very low levels, No. 15 pins of chip U4 are connected to antenna in order to carry out wireless data transmission, No. 12 of chip U4 Pin is connected to signal screening and screening circuit.

The cloud mask of a kind of band PM2.5 sensor the most as claimed in claim 2, it is characterised in that described signal screening and sieve Choosing electricity router chip U3 controls, and signal screening and screening circuit are integrated in PCB, No. 7 pins of chip U3 and No. 6 pipes Being connected to resistance R3 between foot, another one end of extracting out connects ground connection after resistance R4, is connected between No. 5 pins and No. 2 pins of chip U3 No. 2 pins and No. 1 pin parallel connection of resistance R5, chip U3 are followed by ground connection after electric capacity C6, and No. 3 pins of chip U3 connect photoelectricity two pole The positive pole of pipe D2, the minus earth of photodiode D2, the laser signal that laser diode D3 launches is turned by photodiode D2 It is changed to, with concentration change pulse voltage signal, be sent data to No. 12 pins of chip U4 by No. 7 pins of chip U3, and Extract a termination capacitor C7 filtering out.

The cloud mask of a kind of band PM2.5 sensor the most as claimed in claim 1, it is characterised in that described pull switch is arranged On shell, shell is respectively arranged on the left side and the right side ear-hang, ear-hang connect one can the frenulum of elastic stretching, described frenulum connects to be dialled Dynamic switch, toggle switch is arranged in the PCB in shell, and PCB is connected to battery, and PCB bottom sets Having pressing plate, pressing plate compresses PCB and is fixed, and described pressing plate is by screw means on shell, and screw passes simultaneously Spring thus spring is fixed on pressing plate, described spring one end connects toggle switch, and the other end of spring is fixed on pressing plate On.

The cloud mask of a kind of band PM2.5 sensor the most as claimed in claim 1, it is characterised in that described water ion assembly band There are needle electrode, needle electrode to be powered by battery, under the effect of electrion, the water in the gas of characteristics of contaminated respiratory droplets steamed Gas carries out high pressure ionization, forms nano-scale electronegative water microgranule.

The cloud mask of a kind of band PM2.5 sensor the most as claimed in claim 1, it is characterised in that described bluetooth uses bluetooth 4.0, PM2.5 sensors carry out data transmission the PM2.5 numerical value of real-time on-site by PCB and bluetooth 4.0.