CN106362521A - Environment purification controller and environment purification system - Google Patents
Environment purification controller and environment purification system Download PDFInfo
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- CN106362521A CN106362521A CN201611036849.XA CN201611036849A CN106362521A CN 106362521 A CN106362521 A CN 106362521A CN 201611036849 A CN201611036849 A CN 201611036849A CN 106362521 A CN106362521 A CN 106362521A
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- Prior art keywords
- dust concentration
- dust
- controller
- high tension
- tension generator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
Abstract
The invention provides an environment purification controller and an environment purification system and belongs to the technical field of air purification. The controller comprises a dust sampler, a comparer and a control chip which are sequentially connected, wherein the dust sampler is used for being connected with a dust concentration sensor in a current environment so as to receive dust concentration sampled by the dust concentration sensor and transmit the dust concentration to the comparer; the comparer is used for comparing the dust concentration with a set dust concentration threshold and transmitting a comparison result to the control chip; the control chip is used for being connected with a high-pressure generator in the current environment and controlling the operation of the high-pressure generator; dust particles in the current environment are shot down by electric ions transmitted by the high-pressure generator. Therefore, under the condition that accumulated water pollution to the ground is avoided, the pollution of flying dust to atmosphere can be reduced, the air quality in the environment is improved, the atmospheric environment is improved, and body health of human beings is favorably guaranteed.
Description
Technical field
The present invention relates to technical field of air purification, in particular to a kind of depollution of environment being applied to open space
Controller and environmental cleanup system.
Background technology
In the very wide range closing on the heavily contaminateds such as job site, factory, enterprise, highway area, airborne dust is heavier, air matter
Amount is generally poor, and because these regions belong to open space, it is larger to be related to space, is not easy to manage and controls, therefore, often
Airborne dust granule occurs endanger air quality, destroy the living environment of people, give people the healthy of class and bring serious harm.
For the air dust pollution in above-mentioned open space, the mode of commonly used water spray or watering, shoots down and raises now
Dirt granule.But after watering, ground can be covered by muddy water, low-lying part produces easy hydrops, causes ground pollution, affects people
Normal walking.
Content of the invention
In view of this, the invention provides a kind of depollution of environment controller and environmental cleanup system, control high tension generator
Transmitting electron ion, shoots down airborne dust granule, can reduce the dirt to air for the airborne dust in the case that ground is not caused with hydrops pollution
Dye.
In a first aspect, embodiments providing a kind of depollution of environment controller, described controller includes: is sequentially connected
Dust sampler, comparator and control chip；
Described dust sampler is used for being connected with the sensor of dust concentration in current environment, to receive described dust concentration
The dust concentration that sensor sample arrives, described dust concentration is sent to described comparator；
Described comparator is used for relatively described dust concentration and the size of the dust concentration threshold value setting, and comparative result is sent out
Deliver to described control chip；
Described control chip is used for being connected with the high tension generator in described current environment, and the comparison in described comparator
When result is that described dust concentration is more than the dust concentration threshold value setting, described high tension generator is controlled to run, by described height
The electron ion of pressure generator transmitting is shot down to the dust granules in described current environment.
In conjunction with a first aspect, the embodiment of the present invention additionally provides the first possible embodiment of first aspect, wherein,
Described controller also includes the display being connected with described control chip；
Described control chip is additionally operable to show described dust concentration by described display.
In conjunction with a first aspect, the embodiment of the present invention additionally provides the possible embodiment of second of first aspect, wherein,
Described display includes led display or oled display.
Second aspect, embodiments provides a kind of environmental cleanup system, and described system is included described in first aspect
Controller, high tension generator and sensor of dust concentration；
Wherein, described high tension generator and sensor of dust concentration are all connected with described controller；Described high tension generator
Number all at least one with sensor of dust concentration；
Described sensor of dust concentration is used for the dust concentration in current environment is sampled, and by the dust sampling
Concentration is sent to the dust sampler in described controller；
Described high tension generator is used under the control of described controller, launches electron ion, in described current environment
Dust granules are shot down.
In conjunction with second aspect, the embodiment of the present invention additionally provides the first possible embodiment of second aspect, wherein,
Described high tension generator includes positive terminal and negative pole end；
Described positive terminal is used for launching cation；
Described negative pole end is used for being grounded, transmitting anion.
In conjunction with the first possible embodiment of second aspect, the embodiment of the present invention additionally provides the second of second aspect
Kind possible embodiment, wherein, described high tension generator also includes voltage conversion circuit, power amplifier, booster circuit and again
Voltage rectifier；
The input of described voltage conversion circuit is connected with alternating current power supply, for by the voltage conversion of described alternating current power supply being
DC voltage；The outfan of described voltage conversion circuit is connected with described controller and described power amplifier；
Described power amplifier is sequentially connected with booster circuit, voltage doubling rectifing circuit, the input of described power amplifier and institute
State controller to connect, the high frequency voltage for producing described controller carries out power amplification, described voltage doubling rectifing circuit defeated
Go out end to be connected with described positive terminal.
In conjunction with the possible embodiment of the second of second aspect, the embodiment of the present invention additionally provides the 3rd of second aspect
Plant possible embodiment, wherein, described high tension generator also includes exporting feedback circuit；
The input of described output feedback circuit is connected with the outfan of described voltage doubling rectifing circuit, described output feedback electricity
The outfan on road is connected with described controller；
Described controller is used for the output voltage of described high tension generator according to described output feedback circuit feedback and defeated
Go out electric current, control the operational factor of described high tension generator.
In conjunction with second aspect, the embodiment of the present invention additionally provides the 4th kind of possible embodiment of second aspect, wherein,
Described sensor of dust concentration includes laser dust sensor.
In conjunction with second aspect, the embodiment of the present invention additionally provides the 5th kind of possible embodiment of second aspect, wherein,
Described sensor of dust concentration includes pm2.5 particulate matter sensors and pm10 particulate matter sensors.
In conjunction with the first possible embodiment of second aspect, the embodiment of the present invention additionally provides the 6th of second aspect
Plant possible embodiment, wherein, the positive terminal of described high tension generator exports the voltage of more than 100kv.
The embodiment of the present invention brings following beneficial effect:
Depollution of environment controller provided in an embodiment of the present invention and environmental cleanup system, the airborne dust in span of control exceedes
During default standard value, controller will start high tension generator transmitting electron ion, shoots down airborne dust granule such that it is able to not right
In the case that hydrops pollution is caused on ground, reduce the pollution to air for the airborne dust, improve the air quality in open environment, improve big
Compression ring border, contributes to ensureing that the mankind's is healthy.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in description, claims
And in accompanying drawing specifically noted structure realizing and to obtain.
For enabling the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
In embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe in
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
The structured flowchart of the depollution of environment controller that Fig. 1 is provided by one embodiment of the invention；
The structured flowchart of the depollution of environment controller that Fig. 2 is provided by another embodiment of the present invention；
The structured flowchart of the environmental cleanup system that Fig. 3 is provided by one embodiment of the invention；
The structured flowchart of the high tension generator that Fig. 4 is provided by one embodiment of the invention.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described it is clear that described embodiment a part of embodiment that is the present invention, rather than
Whole embodiments.The assembly of the embodiment of the present invention generally described and illustrated in the accompanying drawing herein can be with various different joining
Put to arrange and to design.Therefore, below the detailed description of the embodiments of the invention providing in the accompanying drawings is not intended to limit
The scope of claimed invention, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into the present invention
The scope of protection.
Embodiment one
This embodiment offers a kind of depollution of environment controller, the structure of described controller is as shown in figure 1, described controller
Including the dust sampler 101 being sequentially connected, comparator 102 and control chip 103.
Dust sampler 101 is used for being connected with the sensor of dust concentration in current environment, to receive dust concentration sensing
The dust concentration that device samples, dust concentration is sent to comparator 102.
Comparator 102 be used for compare dust concentration with set dust concentration threshold value size, by comparative result send to
Control chip 103.
Control chip 103 is used for being connected with the high tension generator in current environment, and the comparative result in comparator 102 is
When dust concentration is more than the dust concentration threshold value setting, high tension generator is controlled to run, the ionization launched by high tension generator
Son shoots down to the dust granules in current environment.
Embodiment two
This embodiment offers another kind of depollution of environment controller, structure as shown in Fig. 2 this controller include with above-mentioned
Embodiment one identical dust sampler 101, comparator 102 and 103 3 modules of control chip, will not be described here.This control
Device processed is with the difference of the controller of embodiment one: this controller also includes the display being connected with control chip 103
104；Control chip 103 is additionally operable to show dust concentration and the running status of high tension generator by display 104.
Aforementioned display device 104 can be led display or oled display, for showing the information such as word, figure.
Led display, is a kind of display mode by controlling semiconductor light-emitting-diode, sending out by many discrete package
Optical diode is constituted, and the light emitting diode of three kinds of colors of red, green, blue forms one group of square module, shape under coordinating to drive
Help colour painting element, resolution by picture element between central point distance determine.
Oled (organic light emitting display, i.e. Organic Light Emitting Diode) display is using organic
Electroluminescent diode is made.Due to being provided simultaneously with self-luminous, it is not required to backlight, contrast height, thickness of thin, visual angle extensively, instead
Answer that speed is fast, can be used for flexibility panel, using wide temperature range, construction and the excellent characteristic such as processing procedure is simpler.
Embodiment three
This embodiment offers a kind of environmental cleanup system, its structure is as shown in figure 3, described system includes above-described embodiment
One or embodiment two described in controller 10, high tension generator 30 and sensor of dust concentration 20.
Wherein, high tension generator 30 and sensor of dust concentration 20 are all connected with controller 10, high tension generator 30 and powder
The number of dust concentration sensor 20 all at least one.
Sensor of dust concentration 20 is used for the dust concentration in current environment is sampled, and will be dense for the dust sampling
Degree is sent to the dust sampler 101 in controller 10.
Sensor of dust concentration 20 can adopt laser dust sensor.Laser dust sensor is former using laser light scattering
The high-tech sensor of reason exploitation, can under natural airflow state in real time, on the spot, continuous continual monitoring display dust
Concentration, is able to detect that different size of dust granules.
Sensor of dust concentration 20 can also adopt pm2.5 particulate matter sensors and pm10 particulate matter sensors.
Aerodynamic is also commonly referred to as respirable dust diameter less than 10 μm of dust that can enter alveolar region.Diameter exists
More than 10 μm of grit major part is deposited by shock, and when human body sucks, major part is deposited on nasopharynx part, and less than 10 μm
Dust can enter the deep of respiratory tract.And the dust major part of deposition is less than 5 μm of dust in alveolar.
Pm2.5 particulate matter sensors are used for detecting the value of the pm2.5 of in the air.Pm2.5 fine particle diameter is little, in air
The time of middle suspension is long, and the distance of Spreading and diffusion is remote, and usually contains poisonous and hazardous material in a large number, thus to health shadow
Sound is bigger.
Pm2.5 particulate matter sensors operation principle is developed according to scattering of light principle, and microgranule and molecule are in light
Scattering of light phenomenon can be produced under irradiating, meanwhile, also absorb the energy of partial illumination light.When a branch of collimated monochromatic ligth is incident
During to tested particle field, can be affected by scattering around granule and absorbing, light good general be attenuated.Try to achieve incident illumination by be measured
The relative attenuation rate of concentration field, the size of relative attenuation rate substantially can linear response field to be measured dust relative concentration.
Pm10 particulate matter sensors are used for detecting the dust granules being relatively large in diameter of in the air, that is, with diameter greater than 2.5um
Particulate matter less than or equal to 10 μm.Pm10 particulate matter sensors interior diagonal lays infrared light-emitting diode and photoelectric crystal
Pipe, their optical axis intersects, and when the air-flow with dust passes through the intersection region that optical axis intersects, dust, to infrared light reflection, reflects
Light intensity be directly proportional to dust concentration.Phototransistor is so that it can detect in the air dust reflected light, infraluminescence two
Pole pipe is launched light and is run into dust generation reflected light, receives the light intensity that sensor detects reflected light, output signal, according to defeated
The size going out signal light intensity judges the concentration of dust, distinguishes different ashes by exporting two different pulse-width signals (pwm)
The concentration of dirt particulate matter.
Sensor of dust concentration 20 can also adopt laser dust sensor, pm2.5 particulate matter sensors and pm10 simultaneously
Particulate matter sensors, more fully detect the dust concentration of in the air.In span of control, multiple dust concentrations can be set and pass
Sensor, sensor of dust concentration may be mounted at each corner or can fix part, to the space in span of control and each
Corner is monitored.
High tension generator 30 is used under the control of controller 10, launches electron ion, to the dust granules in current environment
Shot down.
High tension generator 30 includes positive terminal and negative pole end；Positive terminal is used for launching cation；Negative pole end is used for being grounded, and sends out
Penetrate anion.
The structure of high tension generator 30 is as shown in figure 4, high tension generator 30 also includes voltage conversion circuit 305, power amplifier electricity
Road 301, booster circuit 302 and voltage doubling rectifing circuit 303.
The input of voltage conversion circuit 305 is connected with alternating current power supply, for being direct current by the voltage conversion of alternating current power supply
Voltage；The outfan of voltage conversion circuit 305 is connected with controller 10 and power amplifier 301.
Power amplifier 301 is sequentially connected with booster circuit 302, voltage doubling rectifing circuit 303, the input of power amplifier 301
It is connected with controller 10, the high frequency voltage for producing controller 10 carries out power amplification, the output of voltage doubling rectifing circuit 303
End is connected with positive terminal 304.
High tension generator 30 also includes exporting feedback circuit 306.The input of output feedback circuit 306 and voltage multiplying rectifier electricity
The outfan on road 303 connects, and the outfan of output feedback circuit 306 is connected with controller 10.
The output voltage of the high tension generator 30 according to output feedback circuit 306 feedback for the controller 10 and output current, control
The operational factor of high tension generator 30 processed.
Wherein, the positive terminal of high tension generator 30 is connected with cation probe, can export the voltage of more than 100kv, often
Individual cation probe can clean 150m3Space.Spatial dimension if necessary to control is especially big, then can install multiple high pressure
Generator or multiple cation probe.
Described cation probe is installed aloft, between cation probe and high tension generator using fine copper GB cable even
Connect.
For example, when system provided in an embodiment of the present invention being installed by highway, cation probe can be arranged on street lamp
Top.At the construction field (site) or when system provided in an embodiment of the present invention is installed in the region such as factory and enterprise, cation can be popped one's head in
It is arranged on roof or overhead etc..
When being exceeded the standard of harm health of people by the dust in the range of controlling, sensor of dust concentration will sample
Dust concentration sends to controller, and controller sends enabled instruction to high voltage detector, cation probe can launch immediately just from
Son, produces under cation and the reaction of anion of the earth itself in cation probe high pressure, can attract to shoot down dust granules, from
And avoid distributing of airborne dust granule, dust is hit after falling earthward, 70%～80% walked clearly it is ensured that whole big ring by workman
The air quality in border, meanwhile, it also avoid the phenomenon that traditional watering measure easily causes excess surface water pollution.
The present invention improves the management level of Dust Improvement unit, embody job site, factory, enterprise information automatic
Change, improve the benefit of Dust Improvement project.
Depollution of environment controller provided in an embodiment of the present invention and environmental cleanup system have identical technical characteristic, so
Also identical technical problem can be solved, reach identical technique effect.
It should be noted that it should be understood that disclosed device and system in embodiment provided by the present invention, can
To realize by another way.Device embodiment described above is only schematically, for example, the drawing of described unit
Point, only a kind of division of logic function, actual can have other dividing mode when realizing, and for example, multiple units or group
Part can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not execute.Described as separated part
The unit of part explanation can be or may not be physically separate, as the part that unit shows can be or also may be used
Not to be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Need select the purpose to realize this embodiment scheme for some or all of unit therein.
In addition, each functional unit in the embodiment that the present invention provides can be integrated in a processing unit, also may be used
To be that unit is individually physically present it is also possible to two or more units are integrated in a unit.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can
To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplify description, rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or hint relative importance.
Last it is noted that the specific embodiment of embodiment described above, the only present invention, in order to the present invention to be described
Technical scheme, be not intended to limit, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this
Bright be described in detail, it will be understood by those within the art that: any those familiar with the art
The invention discloses technical scope in, it still can be modified to the technical scheme described in previous embodiment or can be light
It is readily conceivable that change, or equivalent is carried out to wherein some technical characteristics；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of embodiment of the present invention technical scheme, all should cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention should described be defined by scope of the claims.
Claims (10)
1. a kind of depollution of environment controller is it is characterised in that described controller includes: the dust sampler that is sequentially connected, compares
Device and control chip；
Described dust sampler is used for being connected with the sensor of dust concentration in current environment, to receive described dust concentration sensing
The dust concentration that device samples, described dust concentration is sent to described comparator；
Described comparator is used for the size of relatively described dust concentration and the dust concentration threshold value setting, by comparative result send to
Described control chip；
Described control chip is used for being connected with the high tension generator in described current environment, and the comparative result in described comparator
When being more than, for described dust concentration, the dust concentration threshold value setting, described high tension generator is controlled to run, by described high pressure
The electron ion of raw device transmitting is shot down to the dust granules in described current environment.
2. controller according to claim 1 is it is characterised in that described controller also includes being connected with described control chip
Display；
Described control chip is additionally operable to show described dust concentration by described display.
3. controller according to claim 1 is it is characterised in that described display includes led display or oled shows
Device.
4. a kind of environmental cleanup system is it is characterised in that described system includes controller described in claim 1, high pressure occurs
Device and sensor of dust concentration；
Wherein, described high tension generator and sensor of dust concentration are all connected with described controller；Described high tension generator and powder
The number of dust concentration sensor all at least one；
Described sensor of dust concentration is used for the dust concentration in current environment is sampled, and by the dust concentration sampling
It is sent to the dust sampler in described controller；
Described high tension generator is used under the control of described controller, launches electron ion, to the dust in described current environment
Granule is shot down.
5. system according to claim 4 is it is characterised in that described high tension generator includes positive terminal and negative pole end；
Described positive terminal is used for launching cation；
Described negative pole end is used for being grounded, transmitting anion.
6. system according to claim 5 is it is characterised in that described high tension generator also includes voltage conversion circuit, work(
Electric discharge road, booster circuit and voltage doubling rectifing circuit；
The input of described voltage conversion circuit is connected with alternating current power supply, for being direct current by the voltage conversion of described alternating current power supply
Voltage；The outfan of described voltage conversion circuit is connected with described controller and described power amplifier；
Described power amplifier is sequentially connected with booster circuit, voltage doubling rectifing circuit, the input of described power amplifier and described control
Device processed connects, and the high frequency voltage for producing described controller carries out power amplification, the outfan of described voltage doubling rectifing circuit
It is connected with described positive terminal.
7. system according to claim 6 is it is characterised in that described high tension generator also includes exporting feedback circuit；
The input of described output feedback circuit is connected with the outfan of described voltage doubling rectifing circuit, described output feedback circuit
Outfan is connected with described controller；
Described controller is used for output voltage and the output electricity of the described high tension generator according to described output feedback circuit feedback
Stream, controls the operational factor of described high tension generator.
8. system according to claim 4 is it is characterised in that described sensor of dust concentration includes laser dust sensing
Device.
9. system according to claim 4 is it is characterised in that described sensor of dust concentration includes pm2.5 particulate matter biography
Sensor and pm10 particulate matter sensors.
10. system according to claim 5 is it is characterised in that the positive terminal of described high tension generator exports more than 100kv
Voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611036849.XA CN106362521A (en) | 2016-11-22 | 2016-11-22 | Environment purification controller and environment purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611036849.XA CN106362521A (en) | 2016-11-22 | 2016-11-22 | Environment purification controller and environment purification system |
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| Publication Number | Publication Date |
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| CN106362521A true CN106362521A (en) | 2017-02-01 |
Family
ID=57891187
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611036849.XA Pending CN106362521A (en) | 2016-11-22 | 2016-11-22 | Environment purification controller and environment purification system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3784099A (en) * | 1971-12-13 | 1974-01-08 | F Bosco | Air pollution control method |
| CN203396676U (en) * | 2013-07-01 | 2014-01-15 | 中国建筑科学研究院 | Air dust pollutant measuring and controlling system |
| CN103730836A (en) * | 2014-01-06 | 2014-04-16 | 王立新 | Ion cloud haze eliminating and dust settling unit, base station and cluster system |
| CN203916382U (en) * | 2014-04-15 | 2014-11-05 | 王立新 | The closed device for reducing dust of high pollution district ion cloud |
| CN105698334A (en) * | 2014-11-29 | 2016-06-22 | 西安子竹电子科技有限公司 | Intelligent air purifier system |
| CN105842134A (en) * | 2016-03-25 | 2016-08-10 | 歌尔声学股份有限公司 | Haze monitoring apparatus, terminal device, and haze monitoring method |
-
2016
- 2016-11-22 CN CN201611036849.XA patent/CN106362521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3784099A (en) * | 1971-12-13 | 1974-01-08 | F Bosco | Air pollution control method |
| CN203396676U (en) * | 2013-07-01 | 2014-01-15 | 中国建筑科学研究院 | Air dust pollutant measuring and controlling system |
| CN103730836A (en) * | 2014-01-06 | 2014-04-16 | 王立新 | Ion cloud haze eliminating and dust settling unit, base station and cluster system |
| CN203916382U (en) * | 2014-04-15 | 2014-11-05 | 王立新 | The closed device for reducing dust of high pollution district ion cloud |
| CN105698334A (en) * | 2014-11-29 | 2016-06-22 | 西安子竹电子科技有限公司 | Intelligent air purifier system |
| CN105842134A (en) * | 2016-03-25 | 2016-08-10 | 歌尔声学股份有限公司 | Haze monitoring apparatus, terminal device, and haze monitoring method |
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