CN109470614A - A kind of haze real-time monitoring device - Google Patents
A kind of haze real-time monitoring device Download PDFInfo
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- CN109470614A CN109470614A CN201910027692.1A CN201910027692A CN109470614A CN 109470614 A CN109470614 A CN 109470614A CN 201910027692 A CN201910027692 A CN 201910027692A CN 109470614 A CN109470614 A CN 109470614A
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- 238000000034 method Methods 0.000 claims description 17
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- 239000013618 particulate matter Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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Abstract
The invention discloses a kind of haze real-time monitoring systems, it include: that one end of the first plane mirror reflected light bucket is provided with bleed motor, the other end is provided with exhaust motor, for being inputted to by extraneous air from one end of the first plane mirror reflected light bucket, it is exported from the other end, so that the haze degree in the first plane mirror reflected light bucket is consistent with the extraneous haze degree of air, the main detector that the detection device of the other end is arranged in, which is received from the infrared laser beam that the laser beam emitting device of one end emits, obtains the first electric signal；It is the shape of second plane mirror reflected light bucket and the first plane mirror reflected light bucket, equal sized, both ends sealing, it is filled in the inside of the second plane mirror reflected light bucket and passes through pretreated pure air, the reference detector of the detection device of the other end, which is received from the infrared laser beam that the laser beam emitting device of one end emits, obtains the second electric signal；Microcontrol processor exports the extraneous corresponding haze parameter of air after receiving and processing the first electric signal, the second electric signal.
Description
Technical field
The present invention relates to environmental monitoring technology fields, more particularly to a kind of haze real-time monitoring device.
Background technique
Currently, although various new energy such as nuclear energy, wind energy, solar energy are fast-developing and gradually replace traditional fossil
The energy has slowed down greenhouse effects since reducing to fossil energy, guarantees that people meet the demand of the energy.But
Fossil energy is exactly the main source that the mankind use the energy from the beginning, although the ratio used now is reducing,
The scale used still very huge, long-term a large amount of uses of fossil energy, such as power station, vehicle exhaust and plant emissions
Litter etc. all makes haze situation in the current environment of air allow of no optimist, and situation constantly deteriorates.
The main component of haze is sulfur dioxide, nitrogen oxides and pellet, when the humidity increase in air, mist
Pellet in haze is combined together with fog, forms cloudy murky sky.The english abbreviation of particulate matter is PM, is led to
PM2.5 in normal haze detection is exactly the pollution particulate matter that equivalent diameter is less than or equal to 2.5 microns in aerodynamics.This
Grain inherently a kind of pollutant of object, and be the carrier for many poisonous chemicals propagation that many industry generate.
Existing haze detection system mainly uses when measuring to the degree of haze or weight method.Usual situation
It is lower to need the haze air of certain flow using filter paper through acquisition filter paper, it is subsequent that a large amount of process is also needed to complete haze
The work such as the dry weighing of grain inevitably will cause after by numerous processes and cause because haze particle deposits
Measurement inaccuracy situation.At the same time, there is delay in complicated process in time, cannot achieve the reality to haze environment
When monitor.
Another method is β attenuation sensors.It is also needed when measuring haze degree first empty to haze to be measured using filter paper
Gas is sampled, and the time of sampling can be taking human as control.Later by irradiating a branch of β ray on sampling filter paper, ray is passed through
Due to being decayed by scattering when filter paper and particulate matter, the degree of decaying is directly proportional to the haze particle that sample collection arrives, according to penetrating
The decaying of line can calculate the quality of haze particle, to reflect the degree of haze.This measurement method is usually single-pass
The measurement in road, the channel of only one measurement, lacks the reference measure channel supplemented therewith.In long-term work, system it is steady
It is qualitative, repeatable by certain test.
Summary of the invention
The object of the present invention is to provide a kind of haze real-time monitoring systems, accurately detect the haze feelings in air in real time
Condition, quicklook reflect haze degree.
In order to solve the above technical problems, the embodiment of the invention provides a kind of haze real-time monitoring systems, comprising:
One end of first plane mirror reflected light bucket, the first plane mirror reflected light bucket is provided with bleed motor, the other end
It is provided with exhaust motor, for inputting to by extraneous air from one end of the first plane mirror reflected light bucket, from the other end
Output, so that the haze degree in the first plane mirror reflected light bucket is consistent with the haze degree of air in the external world；
Second plane mirror reflected light bucket, the shape of the second plane mirror reflected light bucket and the first plane mirror reflected light bucket
Shape, equal sized, both ends sealing, in the inside of the second plane mirror reflected light bucket filled with by pretreated pure sky
Gas；
Laser beam emitting device, the laser beam emitting device include setting in the first plane mirror reflected light bucket, described the
The equal identical laser of one end corresponding position and quantity of two plane mirror reflected light buckets, for anti-in first plane mirror
Penetrate light bucket, one end of the second plane mirror reflected light bucket emits infrared laser beam and passes through the first plane mirror reflected light
The reflection of bucket, the second plane mirror reflected light bucket reaches the other end；
Detection device, the detection device include that the main detection of the other end of the first plane mirror reflected light bucket is arranged in
Device and the other end reference detector corresponding with the main detector that the second plane mirror reflected light bucket is set, for connecing
The infrared laser beam by haze decaying for receiving the laser transmitting is decayed with reception by the pretreated pure air
Infrared laser beam and be converted to the first electric signal and the second electric signal；
Microcontrol processor, the microcontrol processor are connect with the detection device, for receiving and processing described
The corresponding haze parameter of air in the external world is exported after one electric signal, second electric signal.
It wherein, further include the difference amplifier being connect with the microcontrol processor, the detection device, for described
First electric signal, second electric signal of detection device output are input to the microcontroller processing after carrying out differential amplification
Device.
It wherein, further include the display being connect with the microcontrol processor, for showing the sky in the current external world
The corresponding haze numerical value of gas.
Wherein, the display is OLED display or liquid crystal display.
Wherein, the first plane mirror reflected light bucket, the second plane mirror reflected light bucket are the reflection of cylindrical type plane mirror
Light bucket or prismatic plane mirror reflected light bucket.
Wherein, the first plane mirror reflected light bucket is set, the described of the second plane mirror reflected light bucket left end swashs
The quantity of light device is multiple and is uniformly distributed.
Wherein, the main detector and the setting that the first plane mirror reflected light bucket right end is arranged in are flat described second
The quantity of the reference detector of face mirror reflected light bucket right end is equal and is uniformly distributed.
Wherein, the microcontrol processor is STM32 type single-chip microcontroller or 51 series monolithics.
Haze real-time monitoring system provided by the embodiment of the present invention has the advantage that compared with prior art
The haze real-time monitoring system, by anti-in identical first plane mirror reflected light bucket, the second plane mirror
The laser of one end setting laser beam emitting device of light bucket is penetrated, the other end is arranged the main detector of detection device and with reference to detection
Exhaust motor is arranged in device, by way of contrast, one end setting bleed motor of the first plane mirror reflected light bucket, the other end, makes
The air quality obtained in the first plane mirror reflected light bucket is identical as the external world, and the both ends of the first plane mirror reflected light bucket seal, interior
Pretreated pure air is passed through in portion's filling, by obtaining the infrared laser beam by the two inner air decaying and being converted
For the first electric signal, the second electric signal, and handled by microcontrol processor.Due to the laser letter generated when laser
Number, by the scattering process of molecule in haze, intensity can decay, can be with according to classical Lambert-Beer law
Relationship of the quantitative description laser signal between the decaying in haze field and delustring measurement distance, can obtain current haze
Situation can obtain extraneous air quality situation, and the system structure due to carrying out pumping for air using motor in real time
Simply, the features such as temperature drift is low, the linearity is good, reliability and stability are high, can be provided for a long term accurate haze concentration.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural representation of specific embodiment of haze real-time monitoring system provided in an embodiment of the present invention
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of specific embodiment of haze real-time monitoring system provided in an embodiment of the present invention
Structural schematic diagram.
In a specific embodiment, the haze real-time monitoring system, comprising:
One end of first plane mirror reflected light bucket 10, the first plane mirror reflected light bucket 10 is provided with bleed motor 11,
The other end is provided with exhaust motor 12, for one end of extraneous air from the first plane mirror reflected light bucket 10 is defeated
Enter, exported from the other end, so that the mist of the air of haze degree and the external world in the first plane mirror reflected light bucket 10
Haze degree is consistent；
Second plane mirror reflected light bucket 20, the second plane mirror reflected light bucket 20 and the first plane mirror reflected light bucket
10 shape, equal sized, both ends sealing, in the inside of the second plane mirror reflected light bucket 20 filled with by pretreated
Pure air；
Laser beam emitting device 30, the laser beam emitting device 30 include setting the first plane mirror reflected light bucket 10,
The equal identical laser 31 of one end corresponding position and quantity of the second plane mirror reflected light bucket 20, for described the
One plane mirror reflected light bucket 10, one end transmitting infrared laser beam of the second plane mirror reflected light bucket 20 and process described first
The reflection of plane mirror reflected light bucket 10, the second plane mirror reflected light bucket 20 reaches the other end；
Detection device 40, the detection device 40 include the other end that the first plane mirror reflected light bucket 10 is arranged in
Main detector 41 and the other end that the second plane mirror reflected light bucket 20 is set reference corresponding with the main detector 41
Detector 42 passes through the pre- place with reception for receiving the infrared laser beam by haze decaying that the laser 31 emits
The infrared laser beam of the pure air decaying of reason is simultaneously converted to the first electric signal and the second electric signal；
Microcontrol processor 60, the microcontrol processor 60 is connect with the detection device 40, for receiving and processing
The corresponding haze parameter of air in the external world is exported after first electric signal, second electric signal.
Plane mirror reflected light bucket in the present invention: bucket wall is made of plane mirror, between incident laser and reflection laser
Angle fix, the size by adjusting incidence angle may be implemented two beam laser while converge on photodetector, repeatedly instead
The design penetrated increases measurement light path, in use will not because of haze degree in environment it is lower so as to cause laser attenuation amount compared with
It is small.
Haze real-time monitoring system in the present invention is emitted under different air conditions red by measurement laser 31
Outer laser beam obtains optical signal after being decayed and is converted to electric signal, due to the first plane mirror reflected light bucket 10 and second of use
Light path in plane mirror reflected light bucket 20 is equal, the air in the former the use external world, generally haze air, when laser 31
The laser signal of generation, by the scattering process of molecule in haze, intensity can decay, according to classical Lambert-
Beer law we can quantitatively description laser signal the decaying in haze field and delustring measurement distance between relationship:
I=Aexp (- KS)
In above formula, A is incident laser intensity, and I is the size of the electric signal of detector output, and S is in reflected light bucket
Overall measurement light path, K are extinction coefficient, are a definite value under same testing conditions, receive the telecommunications by microcontrol processor
It number compares and can be obtained corresponding air quality, while the air of the first plane mirror reflected light bucket 10 uses bleed motor 11
Air is carried out with exhaust motor 12 to pump, so that the result of detection has real-time, haze is primarily due to using infrared beam
Middle haze particle has made of stronger scattering process longer wavelengths of laser signal, so that more strong, the ability that decays
Field technique personnel can also be using the laser beam signal of other wave bands, and this is not limited by the present invention.Using parameter optical path with
The method that reference path contrasts is realized, caused by effectively reducing in haze detection process because environmental factor is different
It influences.The features such as design may be implemented that the linearity is good, and temperature drift is low, stability is high, can be provided for a long term accurate haze concentration.
Haze real-time monitoring system in the present invention, since the power of the laser beam of the transmitting of laser 31 itself is lower, and
And in being transmitted and during last detector is received, it is possible to so that signal decrease is very fast, for reality
Haze value the case where accuracy of measurement it is lower, in order to further increase accuracy of measurement, in one embodiment of the present of invention
In, the haze real-time monitoring system further includes the differential amplification connecting with the microcontrol processor, the detection device 40
Device 50, first electric signal for exporting to the detection device 40, second electric signal carry out defeated after differential amplification
Enter to the microcontrol processor.
Difference is carried out by the first electric signal, the second electric signal that export main detector 41 with reference detector 42 to put
Greatly, gap between the two is considerably increased, the accuracy of measurement can be further increased, reduces error.
It should be pointed out that be not limited in the present invention using difference amplifier 50, it can also be using other amplifications
Device, and type to difference amplifier 50 and amplification factor etc. are not specifically limited, and if it find that signal strength not
Needs are able to satisfy, can also be realized by the way of multistage amplification, the present invention is not especially limited this.
The haze value what state actually obtained is exported outward in the present invention and is exported outward in which way not
It is specifically limited, one end time can be spaced just as specified use by the way of short message, after haze value is more than a certain range
Family is sent, and being primarily due to haze will affect air quality, so that the realization of people is rapidly reduced, visual range sometimes can
It is reduced within hundred meters, can also in another manner, in one embodiment of the invention, the haze real-time monitoring system
It further include the display being connect with the microcontrol processor, for showing the corresponding haze number of air in the current external world
Value.
Practical haze value is played by using the mode that display carries out real-time display, it can be using every 30s or one
The mode that minute is updated, since the light of different wave length is different for the visual perception of people in different air qualities,
It can be played when haze value is higher using red when haze value is lower using the color of green.
Furthermore it is also possible to design haze grade, and corresponding different color early warning, user is directly according to the display of acquisition
Color obtain current air quality, in the present invention, can also use direct output numerical value, such as direct uncle PM2.5 number
The mode of value, or hazard rating go on a journey to people of output, such as level-one, second level, serious, extreme is serious, the present invention is to this
It is not especially limited.
The present invention is not specifically limited the type and size of display, and display and installation outdoors, can also
To install indoors, such as shopping firm, the display 70 can be OLED display, or liquid crystal display, or
Person's others display.
It is that the light that is issued by laser 31 is anti-in the first plane mirror reflected light bucket 10, second plane mirror in the present invention
The inside for penetrating light bucket 20 reflect to form the transmission that optical path realizes optical signal, for the first plane mirror reflected light bucket 10, described
The shape and size of second plane mirror reflected light bucket 20 without limitation, the first plane mirror reflected light bucket 10, described second
Plane mirror reflected light bucket 20 can be cylindrical type plane mirror reflected light bucket, or prismatic plane mirror reflected light bucket, or
Other shapes of plane mirror reflected light bucket.
In addition, the present invention can also change light path as needed, incidence angle can be such as increased or decreased, changes actual light
Journey changes the attenuation degree of infrared laser beam, obtains the optical signal of needs, and this is not limited by the present invention, and the laser 31
Incidence angle can be fixed, real-time synchronization adjusting can also be carried out by microcontrol processor, the present invention not make this to have
Body limits.
Due in actual optic path, may be due to the scattering of the particle in temperature, haze the case where, so that light
Certain bending may occur for road, rather than straight, and signal can not be received by thus making it possible to the other end, either
It needs in different situations, emits light beam using the laser 31 of different capacity, to obtain different signals, reduce and miss
Difference, therefore be arranged in the haze real-time monitoring system in the first plane mirror reflected light in one embodiment of the invention
Bucket 10, the laser 31 of 20 left end of the second plane mirror reflected light bucket quantity be multiple and be uniformly distributed.
Carry out the transmitting of laser beam simultaneously or according to certain rule by equally distributed multiple lasers 31, so that
The possible error of operation irregularity of single 31 possibility of laser itself is avoided, and is also possible that different lasers
31 use different incidence angles, can verify actual haze value, reduce error, quantity, class of the present invention for laser 31
Without limitation, laser 31 can be by the way of continuously emitting for type, can also be by the way of pulse, and the present invention does not make this
It limits.
Laser 31 in the present invention can use the laser 31 of 960nm wavelength, can also swashing using other wavelength
Light device 31.
Similarly, in order to improve the receiving efficiency for optical signal, in one embodiment of the invention, the haze is real-time
Monitoring system be arranged in 10 right end of the first plane mirror reflected light bucket the main detector 41 and setting it is flat described second
The quantity of the reference detector 42 of 20 right end of face mirror reflected light bucket is equal and is uniformly distributed.
Main detector 41 and reference detector 42 in the present invention: detector generally uses the higher light of sensitive attribute
The process for laser signal being converted into electric signal may be implemented in electric diode.
It should be pointed out that the detector of other types can also be used, the present invention for the quantity of detector, type not
It is specifically limited.
Since the electric signal exported when mainly using photodiode as detector is smaller, so needing us subsequent right
Signal amplifies.Difference amplifier 50 is to measure attenuation of the laser in haze field in order to obtain, uses differential amplification
Device 50 carries out calculus of differences to two-way measuring signal, i.e., what reference signal subtracted that measuring signal obtains is our required
Attenuation of the laser in haze field.
For the microcontrol processor in the present invention, due to obtaining in circuit be analog signal parameter, two-way
Signal carries out analog-to-digital conversion in microcontrol processor and obtains the value of two digital signals, respectively reference laser intensity value A and
Attenuation A-I of the laser in haze field.Two carry out operation F=(A-I/A)/S to get to the definite of haze concentration
Value.
The present invention for microcontrol processor type and model without limitation, the microcontrol processor 60 be can be
STM32 type single-chip microcontroller, or 51 series monolithics, either other single-chip microcontrollers or microcontrol processor.
In one embodiment, the haze real-time monitoring system in the present invention needs system to be zeroed in use: in system
Before installation, need to adjust following parameter:
1, when main detector cannot get the first optical signal completely, output result is maximum output value, is denoted as measuring system
Maximum range.
2, in environment close under completely clean environment, it is at this time the minimum range of system that the output of regulating system, which is 0,
That is 0 scale value.
In conclusion haze real-time monitoring system provided in an embodiment of the present invention, by identical first plane
Mirror reflected light bucket, the second plane mirror reflected light bucket one end setting laser beam emitting device laser, the other end setting detection dress
The main detector and reference detector set, by way of contrast, one end setting bleed motor of the first plane mirror reflected light bucket,
Exhaust motor is arranged in the other end, so that the air quality in the first plane mirror reflected light bucket is identical as the external world, and the first plane mirror
The both ends of reflected light bucket seal, and pretreated pure air is passed through in internal filling, are decayed by obtaining by the two inner air
Infrared laser beam and be converted into the first electric signal, the second electric signal, and handled by microcontrol processor.Due to
When the laser signal that laser generates, by the scattering process of molecule in haze, intensity can decay, according to classics
Lambert-Beer law can quantitatively describe pass of the laser signal between the decaying in haze field and delustring measurement distance
System, can obtain current haze situation, due to carrying out pumping for air using motor, can obtain extraneous air matter in real time
Situation is measured, and the system structure is simple, temperature drift is low, the linearity is good, reliability and stability are high, can be provided for a long term standard
The features such as true haze concentration.
Haze real-time monitoring system provided by the present invention is described in detail above.It is used herein specifically a
Principle and implementation of the present invention are described for example, and it is of the invention that the above embodiments are only used to help understand
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
Protection scope in.
Claims (8)
1. a kind of haze real-time monitoring system characterized by comprising
First plane mirror reflected light bucket, one end of the first plane mirror reflected light bucket are provided with bleed motor, other end setting
There is exhaust motor, for, from the input of one end of the first plane mirror reflected light bucket, being exported from the other end to by extraneous air,
So that the haze degree in the first plane mirror reflected light bucket is consistent with the haze degree of air in the external world；
The shape of second plane mirror reflected light bucket, the second plane mirror reflected light bucket and the first plane mirror reflected light bucket,
Equal sized, both ends sealing is filled in the inside of the second plane mirror reflected light bucket and passes through pretreated pure air；
Laser beam emitting device, the laser beam emitting device include setting in the first plane mirror reflected light bucket, described second flat
The equal identical laser of one end corresponding position and quantity of face mirror reflected light bucket, in the first plane mirror reflected light
Bucket, one end transmitting infrared laser beam of the second plane mirror reflected light bucket and process the first plane mirror reflected light bucket, institute
The reflection for stating the second plane mirror reflected light bucket reaches the other end；
Detection device, the detection device include be arranged in the other end of the first plane mirror reflected light bucket main detector and
The other end reference detector corresponding with the main detector of the second plane mirror reflected light bucket is set, for receiving
The infrared laser beam by haze decaying for stating laser transmitting passes through the red of the pretreated pure air decaying with reception
Outer laser beam is simultaneously converted to the first electric signal and the second electric signal；
Microcontrol processor, the microcontrol processor are connect with the detection device, for receiving and processing first electricity
The corresponding haze parameter of air in the external world is exported after signal, second electric signal.
2. haze real-time monitoring system as described in claim 1, which is characterized in that further include and the microcontrol processor, institute
The difference amplifier for stating detection device connection, first electric signal, second electricity for being exported to the detection device
Signal is input to the microcontrol processor after carrying out differential amplification.
3. haze real-time monitoring system as claimed in claim 2, which is characterized in that further include being connect with the microcontrol processor
Display, for showing the corresponding haze numerical value of air in the current external world.
4. haze real-time monitoring system as claimed in claim 4, which is characterized in that the display is OLED display or liquid crystal
Display.
5. the haze real-time monitoring system as described in claim 1-4 any one, which is characterized in that the first plane mirror reflection
Light bucket, the second plane mirror reflected light bucket are cylindrical type plane mirror reflected light bucket or prismatic plane mirror reflected light bucket.
6. haze real-time monitoring system as claimed in claim 5, which is characterized in that be arranged in the first plane mirror reflected light
Bucket, the second plane mirror reflected light bucket left end the quantity of the laser be multiple and be uniformly distributed.
7. haze real-time monitoring system as claimed in claim 6, which is characterized in that be arranged in the first plane mirror reflected light bucket
The quantity phase of the main detector of right end and the reference detector that the second plane mirror reflected light bucket right end is set
Deng and be uniformly distributed.
8. haze real-time monitoring system as claimed in claim 7, which is characterized in that the microcontrol processor is STM32 type list
Piece machine or 51 series monolithics.
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| CN201910027692.1A CN109470614A (en) | 2019-01-11 | 2019-01-11 | A kind of haze real-time monitoring device |
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| CN201910027692.1A CN109470614A (en) | 2019-01-11 | 2019-01-11 | A kind of haze real-time monitoring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112214538A (en) * | 2020-10-22 | 2021-01-12 | 上海为瀚环保科技有限公司 | Intelligent gridding system based on ambient air micro station |
| CN112326599A (en) * | 2020-11-05 | 2021-02-05 | 海南大学 | Optical fiber SPR sensor and detection method thereof |
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