CN209117530U - Fugitive dust measuring system - Google Patents
Fugitive dust measuring system Download PDFInfo
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- CN209117530U CN209117530U CN201821851471.3U CN201821851471U CN209117530U CN 209117530 U CN209117530 U CN 209117530U CN 201821851471 U CN201821851471 U CN 201821851471U CN 209117530 U CN209117530 U CN 209117530U
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- 239000000428 dust Substances 0.000 title claims abstract description 86
- 238000005259 measurement Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 239000013618 particulate matter Substances 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 5
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- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
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- 230000010354 integration Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 235000008434 ginseng Nutrition 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
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Abstract
The utility model embodiment provides a kind of fugitive dust measuring system, comprising: controller, processor, airflow channel and at least two measuring devices；The airflow channel is used for transmission air-flow to be detected, and each measuring device includes laser generator and the corresponding photosensitive unit of the laser generator, and the laser generator and the photosensitive unit are oppositely arranged on the two sides of the airflow channel；The photosensitive unit is connected to the processor, and each laser generator is connect with the controller；The fugitive dust measuring system can, dust environment that duration short big to dynamic range carry out real-time monitoring, improve the accuracy of the measurement result of dust environment, the reliability of fugitive dust measuring system is also improved, meets and real-time, test constantly requirement is carried out to dust environment.
Description
Technical field
The utility model relates to environmental monitoring technology field more particularly to a kind of fugitive dust measuring systems.
Background technique
In recent years, with the continuous quickening that urban modernization is built, inevitably occur largely building in city
Building site is built, various construction sites cause the influence of very severe to ambient enviroment, and a large amount of pollutants (particulate matter) is caused to concentrate
It discharges into the atmosphere.The a large amount of particulate matters generated in construction site cover with a thick layer dust to entire city.Moreover,
In these dust, containing the substance being harmful to the human body, it can be impacted to the health of city dweller.
Currently, the fugitive dust measuring device of mainstream is based on the equipment of the micro- balance of use oscillation and β ray attenuation method, this two
Class equipment has a general character: the sensor response time is extremely long, needs to determine in air by prolonged integration data
Particle concentration.
The accuracy of the measurement result for the dust environment that above-mentioned two classes equipment is big for dynamic range, the duration is short
It is not high.
Utility model content
The utility model provides a kind of fugitive dust measuring system, being capable of, fugitive dust that duration short big to dynamic range
Environment carries out real-time monitoring, improves the accuracy of the measurement result of dust environment.
Fugitive dust measuring system provided by the utility model, comprising: controller, processor, airflow channel and at least two survey
Measure device；
The airflow channel is used for transmission air-flow to be detected, and each measuring device includes laser generator and described swashs
The corresponding photosensitive unit of optical generator, the laser generator and the photosensitive unit are oppositely arranged on the two of the airflow channel
Side；
In each measuring device, the laser generator is for emitting first laser, the transmitting of the first laser
Direction is vertical with the extending direction of the airflow channel；The photosensitive unit is connected to the processor, and the photosensitive unit is used
In the parameter of acquisition second laser, and the parameter of the second laser is sent to the processor, wherein the second laser
It is the first laser by the laser after the air-flow reflection to be detected；
Each laser generator is connect with the controller, and the controller is used to control the transmitting of each laser generator
Time, so that the first laser of each laser generator transmitting is reflected by identical air-flow to be detected；The processor is used
In the parameter of the second laser sent according to each photosensitive unit, the number of particulate matter in the air-flow to be detected is obtained
Amount.
Optionally, the fugitive dust measuring system further includes air pump, and the inlet of the airflow channel is arranged in the air pump,
The air pump is for accelerating the air-flow to be detected, so that the air-flow to be detected is in the airflow channel with default
Speed transmission.
Optionally, the controller is connect with the air pump；
The controller is also used to control the air pump and the air-flow to be detected is accelerated to the pre-set velocity；
The controller is specifically used for being controlled each sharp according to the distance between each described measuring device and the pre-set velocity
The launch time of optical generator, so that the first laser of each laser generator transmitting is anti-by identical air-flow to be detected
It penetrates.
Optionally, the fugitive dust measuring system further includes timer, and the timer is connect with the controller, the meter
When device be used for the controller transmission time information.
Optionally, the processor is also connect with the controller；The processor is also used to obtain from the controller
The parameter of the first laser of each laser generator transmitting；
The processor is specifically used for according to the parameter of the first laser of each laser generator transmitting and corresponding
The parameter for the second laser that photosensitive unit obtains obtains the corresponding measurement result of each measuring device, and to each measurement
The corresponding measurement result of device is weighted and averaged, and obtains the quantity of particulate matter in the air-flow to be detected.
Optionally, the fugitive dust measuring system further includes humidifier, and entering for the airflow channel is arranged in the humidifier
At mouthful, the humidifier is used to be arranged the humidity of the air-flow to be detected.
Optionally, the quantity of the measuring device is two.
Optionally, the fugitive dust measuring system further includes display device, and the display device is connected to the processor, institute
The quantity for stating particulate matter in the air-flow to be detected of the display device for obtaining to the processor carries out real-time display.
Optionally, the airflow channel is the circular cylindrical cavity of both ends open.
Optionally, the distance between adjacent each described measuring device is equal.
Fugitive dust measuring system provided by the embodiment of the utility model, comprising: controller, processor, airflow channel and at least
Two measuring devices；The airflow channel is used for transmission air-flow to be detected, each measuring device include laser generator and
It is logical that the corresponding photosensitive unit of the laser generator, the laser generator and the photosensitive unit are oppositely arranged on the air-flow
The two sides in road；The photosensitive unit is connected to the processor, and each laser generator is connect with the controller；The fugitive dust
Measuring system can, dust environment that duration short big to dynamic range carry out real-time monitoring, improve dust environment
Measurement result accuracy；In addition, due to the survey for carrying out redundance type to identical air-flow to be detected using multiple measuring devices
Amount, even if one of laser emitter and/or photosensitive unit break down, nor affects on the measurement to dust environment, guarantees
Fugitive dust measuring system can continual work, improve the reliability of fugitive dust measuring system, meet to dust environment carry out
In real time, the requirement of test constantly.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram one of fugitive dust measuring system provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram two of fugitive dust measuring system provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram three of fugitive dust measuring system provided by the embodiment of the utility model.
Description of symbols:
10: controller；
11: timer；
20: measuring device；
201: laser generator；
202: photosensitive unit；
203: laser generator；
204: photosensitive unit；
30: airflow channel；
31: air pump；
32: humidifier；
40: processor；
41: display device.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The specification and claims of the utility model and term " first ", " second ", " third " in above-mentioned attached drawing
(if present)s such as " the 4 " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It answers
The data that the understanding uses in this way are interchangeable under appropriate circumstances, for example so as to the embodiments of the present invention described herein
It can be performed in other sequences than those illustrated or described herein.In addition, term " includes " and " having " and he
Any deformation, it is intended that cover it is non-exclusive include, for example, contain the process, method of a series of steps or units,
System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include being not clearly listed
Or the other step or units intrinsic for these process, methods, product or equipment.
As previously mentioned, the fugitive dust measuring device of mainstream is at present with the equipment using micro- balance and β ray attenuation method is vibrated
Based on, these two types of equipment have a general character: the sensor response time is extremely long, needs to determine by prolonged integration data
Particle concentration in air.Therefore, the dust environment that above-mentioned two classes equipment is big for dynamic range, the duration is short
The accuracy of measurement result is not high.
Fugitive dust measuring system provided by the embodiment of the utility model, can it is big to dynamic range, the duration is short
Dust environment carries out real-time monitoring, improves the accuracy of the measurement result of dust environment.
The technical solution of the utility model is described in detail with specifically embodiment below.These are specific below
Embodiment can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the structural schematic diagram one of fugitive dust measuring system provided by the embodiment of the utility model, as shown in Figure 1, this reality
The fugitive dust measuring system for applying example may include: controller 10, processor 40, airflow channel 30 and at least two measuring devices 20.
Wherein, the airflow channel 30 is used for transmission air-flow to be detected, and each measuring device 20 includes laser
Device and the corresponding photosensitive unit of the laser generator, the laser generator and the photosensitive unit are oppositely arranged on the gas
The two sides of circulation road.
Fugitive dust measuring system provided in this embodiment can be used for measuring various dust environments, including but not limited to:
Construction site dust environment, dust on the roads environment, plant maintenance dust environment, material transportation dust environment etc., certainly, this implementation
The fugitive dust measuring system that example provides can be also used for measuring the air-flow of conventional environment.The fugitive dust of the present embodiment measures system
System is measured for the particulate matter quantity in the air to above-mentioned dust environment, and the particulate matter includes but is not limited to: PM10,
PM2.5 etc..
Specifically, airflow channel 30 is used for transmission air-flow to be detected.The air-flow to be detected is from above-mentioned dust environment
The air-flow of acquisition.It is, for example, possible to use extractor fans to be delivered to the air-flow in dust environment in airflow channel.
It should be understood that airflow channel 30 is used to provide transmission channel for air-flow to be detected, the length of airflow channel 30 is cut
Face shapes and sizes can be rationally arranged according to the actual situation.
Optionally, the airflow channel 30 is the circular cylindrical cavity of both ends open.It should be understood that circular cylindrical cavity is interior
Wall is smooth, enables to air-flow to be detected to be evenly distributed in airflow channel 30, and flow speed stability, is conducive to air-flow to be detected
It measures, so that measurement result is more accurate.
The utility model embodiment for measuring device 20 quantity and be not especially limited, it is that fugitive dust is surveyed that Fig. 1 is exemplary
Include the case where two measuring devices 20 in amount system.As shown in Figure 1, laser generator 201 and photosensitive unit 202 form one
Measuring device 20, and laser generator 201 and photosensitive unit 202 are oppositely arranged on the two sides of airflow channel 30；Laser generator
203 and photosensitive unit 204 form another measuring device 20, and laser generator 203 and photosensitive unit 204 are oppositely arranged on gas
The two sides of circulation road 30.
Below by taking the measuring device that laser generator 201 and photosensitive unit 202 form as an example, measuring device pair is described in detail
The measurement process of air-flow to be detected.
As shown in Figure 1, the laser generator 201 is for emitting first laser, the direction of the launch of the first laser with
The extending direction of the airflow channel 30 is vertical；The photosensitive unit 202 is connect with the processor 40, the photosensitive unit
202 for obtaining the parameter of second laser, and the parameter of the second laser is sent to the processor 40, wherein described
Second laser is the first laser by the laser after the air-flow reflection to be detected.
Wherein, laser generator 201 is laser beam emitting device, can emit first laser, also, the first laser emitted
Transmission direction it is vertical with the extending direction of airflow channel 30, therefore, first laser can pass through airflow channel 30.Due to air-flow
There are particulate matter in air-flow to be detected in channel 30, first laser can be by therein during passing through airflow channel 30
Grain object reflects away a part of laser, so that first laser is decayed, by first laser by the gas to be detected in the present embodiment
Laser after flowing reflection loss, referred to as second laser.Photosensitive unit 202 obtains the ginseng of second laser for receiving second laser
Number, and the parameter of second laser is sent to processor 40.
It should be understood that measurement of the measuring device of laser generator 203 and the composition of photosensitive unit 204 to air-flow to be detected
Process, similar with the above process, details are not described herein again.
Measuring device in the present embodiment uses laser generator and photosensitive unit, i.e. measuring device belongs to particle assembly
(cloud) scatters the monitoring device of class, such device is short to the response time of dust environment, makes it possible to obtain gas to be detected in real time
The quantity of particulate matter in stream.In addition, laser generator and photosensitive unit can use laser transmitting set in the prior art
And laser receiving set, the utility model embodiment are not especially limited this.
As shown in Figure 1, each laser generator (201,203) connect with the controller 10, the controller 10 is used
In the launch time for controlling each laser generator (201,203), so that the first of each laser generator (201,203) transmitting
Laser is reflected by identical air-flow to be detected.
Specifically, air-flow to be detected passes through laser generator 201 when air-flow to be detected is transmitted in airflow channel 30
At the time of the first laser of transmitting, with by laser generator 203 emit first laser at the time of, have the regular hour poor.
In the present embodiment, the launch time of two laser generators can be controlled by controller 10, swashed for example, controlling in first time
Optical generator 201 emits first laser, emits first laser in the second time control laser generator 203, so that two laser
The first laser of generator transmitting is reflected by identical air-flow to be detected.That is, each measuring device in the present embodiment
20 be to have carried out multiple measurement for identical air-flow to be detected in fact.
Further, the processor 40 is used to be swashed according to described second that each photosensitive unit (202,204) sends
The parameter of light obtains the quantity of particulate matter in the air-flow to be detected.
Specifically, the parameter for the second laser that processor can be sent according to each photosensitive unit, obtains each measurement dress
Set corresponding measurement result.In a kind of optional embodiment, each laser generator is sent out according to the parameter of preset first laser
First laser is penetrated, also, the parameter of the corresponding first laser of each laser generator has been stored in advance in processor, processor receives
It, can be according to the parameter of second laser and the first laser prestored after the parameter of the second laser sent to each photosensitive unit
Parameter determines attenuation of the second laser relative to first laser, and then is obtained in air-flow to be detected according to the attenuation
The quantity of particulate matter.
Optionally, the processor is also connect with the controller.It should be understood that controller can also control it is each described
The parameter of the first laser of laser generator transmitting, processor are also used to obtain each laser generator hair from the controller
The parameter for the first laser penetrated.In turn, processor can according to the parameter of the first laser of each laser generator transmitting with
And the parameter of the second laser of corresponding photosensitive unit acquisition, the corresponding measurement result of each measuring device is obtained, and to each
The corresponding measurement result of the measuring device is weighted and averaged, and obtains the quantity of particulate matter in the air-flow to be detected.
It should be understood that being directed to identical air-flow to be detected in the present embodiment, multiple measuring devices 20 are respectively adopted and carry out
Multiple measurement, processor 40 can according to it is repeatedly measuring as a result, and the result repeatedly measured is weighted and averaged, obtain
The quantity of particulate matter in air-flow to be detected.
In the utility model embodiment, due to being provided with multiple measuring devices 20, and multiple measuring devices 20 distinguish needle
Identical air-flow to be detected is taken multiple measurements, processor obtains particulate matter in air-flow to be detected according to the result repeatedly measured
Quantity improve the accuracy of fugitive dust measurement result so that measurement result is more accurate.In addition, due to being filled using multiple measurements
The measurement that 20 pairs of identical air-flows to be detected carry out redundance type is set, even if one of laser generator and/or photosensitive unit hair
Raw failure nor affects on the measurement to dust environment, guarantee fugitive dust measuring system can continual work, improve fugitive dust survey
The reliability of amount system meets and carries out real-time, test constantly requirement to dust environment.
When specific implementation, controller 10 and processor 40 can be with concentrated settings, can be with separately positioned, the utility model pair
This is not especially limited.In a kind of optional embodiment, controller 10 and 40 concentrated setting of processor can be surveyed at one
It measures in equipment, which is placed on to the scene of fugitive dust measurement.In another optional embodiment, controller 10 and processing
Device 40 is separately positioned, for example, controller 10 to be arranged in the scene of fugitive dust measurement, server at the far end is arranged in processor 40
In.In another optional embodiment, processor 40 can also be realized beyond the clouds.
Fugitive dust measuring system provided by the embodiment of the utility model, comprising: controller, processor, airflow channel and at least
Two measuring devices；The airflow channel is used for transmission air-flow to be detected, each measuring device include laser generator and
It is logical that the corresponding photosensitive unit of the laser generator, the laser generator and the photosensitive unit are oppositely arranged on the air-flow
The two sides in road；The photosensitive unit is connected to the processor, and each laser generator is connect with the controller；The fugitive dust
Measuring system can, dust environment that duration short big to dynamic range carry out real-time monitoring, improve dust environment
Measurement result accuracy；In addition, due to the survey for carrying out redundance type to identical air-flow to be detected using multiple measuring devices
Amount, even if one of laser emitter and/or photosensitive unit break down, nor affects on the measurement to dust environment, guarantees
Fugitive dust measuring system can continual work, improve the reliability of fugitive dust measuring system, meet to dust environment carry out
In real time, the requirement of test constantly.
Fig. 2 is the structural schematic diagram two of fugitive dust measuring system provided by the embodiment of the utility model, as shown in Fig. 2, upper
On the basis of stating embodiment, the fugitive dust measuring system of the present embodiment can also include air pump 31.
The inlet of the airflow channel 30 is arranged in the air pump 31, and the air pump 31 is used for the air-flow to be detected
Accelerated, so that the air-flow to be detected is transmitted in the airflow channel 30 with pre-set velocity.
Wherein, air pump 31 can be any device with air-flow acceleration function, when air-flow to be detected is after air pump 31,
Air pump 31 can accelerate air-flow to be detected, so that air-flow to be detected obtains lasting, stable speed, and continued with this,
Stable speed is transmitted in airflow channel 30.
Optionally, the air pump 31 is connect with the controller 10.Controller 10 will be described to be checked for controlling air pump 31
It surveys air-flow and accelerates to the pre-set velocity.
Further, the controller 10 is specifically used for being preset according to the distance between each described measuring device 20 with described
Speed controls the launch time of each laser generator, so that the first laser of each laser generator transmitting is identical
Air-flow reflection to be detected.
It should be noted that adjacent the distance between each measuring device 20 can be equal or differs.Below
By taking the distance between adjacent each measuring device is equal as an example, illustrate that controller 10 controls each laser generation in the present embodiment
The detailed process of the launch time of device.
Assuming that the speed of air-flow to be detected is accelerated to v by air pump 31 under the control of controller 10, due to each measuring device
The distance between 20 be s, according to distance s and speed v, available air-flow to be detected emit by laser generator 201 the
After one laser, time t required for the first laser that laser generator 203 emits is reached.Therefore, controller 10 can be in t1
It carves control laser generator 201 and emits first laser, control laser generator 203 at the t1+t moment and emit first laser.In this way,
To pass through be identical air-flow to be detected to the first laser of two laser generators transmitting, be equivalent to twice in succession to it is identical to
Detection air-flow measures.In turn, the parameter for the second laser that processor is obtained according to two photosensitive units, obtains identical to be checked
The measurement result twice of air-flow is surveyed, the number of particulate matter in air-flow to be detected will be obtained after measurement result is weighted and averaged twice
Amount, so that measurement result is more accurate.
It should be noted that above-mentioned be illustrated by taking a fugitive dust measurement period as an example, it is possible to understand that, practical application
In, air-flow to be detected is constantly transmitted from airflow channel, and each measuring device can survey air-flow to be detected in real time
Amount.
It is superfluous due to being carried out using multiple measuring devices to identical air-flow to be detected in the fugitive dust measuring system of the present embodiment
The measurement of residue nor affects on the survey to dust environment even if one of laser emitter and/or photosensitive unit break down
Amount, guarantee fugitive dust measuring system can continual work, improve the reliability of fugitive dust measuring system, meet to fugitive dust ring
Border carries out real-time, test constantly requirement.
Optionally, as shown in Fig. 2, fugitive dust measuring system in the present embodiment, can also include timer 11.The timing
Device 11 is connect with the controller 10, and the timer 11 is used for the controller transmission time information.
Specifically, the timer 11 can be the timer that precision is the second.In the present embodiment, timer 11 and controller
10 be connected, the function of timer may be implemented so that controller 10 for the launch time of each laser generator control more
Accurately.
Fugitive dust measuring device in the prior art, the response time of sensor are longer, it is therefore desirable to time of measuring it is longer,
It is generally necessary to which even more than ten minutes a few minutes could obtain one-shot measurement result.And in the present embodiment, in timer 11 and control
Under the control of device 10, laser generator can emit first laser in seconds, substantially reduce time of measuring, realize pair
Dust environment carries out real-time monitoring.
Fig. 3 is the structural schematic diagram three of fugitive dust measuring system provided by the embodiment of the utility model, as shown in figure 3, upper
On the basis of stating embodiment, the fugitive dust measuring system of the present embodiment can also include: humidifier 32.
The inlet of the airflow channel 30 is arranged in the humidifier 32, and the humidifier 32 is described to be checked for being arranged
Survey the humidity of air-flow.
Specifically, due to including a plurality of types of particulate matters in air-flow to be detected, such as: PM10, PM2.5, sandy soil, building
Rubbish etc. after humidifying by using humidifier 32 to air-flow to be detected, can make the different type in air-flow to be detected
Particulate matter humidity having the same, be conducive to improve fugitive dust measurement result accuracy.
It should be noted that humidifier 32 can be the arbitrary equipment with humidification function, and can be added using a variety of
Moor reason is humidified, and the utility model embodiment is not especially limited.
Optionally, as shown in figure 3, the fugitive dust measuring system of the present embodiment can also include: display device 41.The display
Device 41 is connect with the processor 40, and the display device 41 is used for the air-flow to be detected obtained to the processor 40
The quantity of middle particulate matter carries out real-time display.
Specifically, display device 41 can be any device having a display function, including but not limited to: light emitting diode
(Light Emitting Diode, LED) display device, liquid crystal (Liquid Crystal Display, LCD) display device
Deng.When the processor 40 and 10 concentrated setting of controller are in fugitive dust measure field, display device 41 can be with processing
The wired or wireless connection of device 40；When the processor 40 setting is at distal end or cloud, display device 41, which can be set, is being raised
The scene of dirt measurement, wirelessly communicates with processor 40 and connects, and is tied with facilitating field personnel that can measure with real time inspection fugitive dust
Fruit.
Optionally, the fugitive dust measuring system of the present embodiment can also include warning device (not shown), the warning device
It is connected to the processor, when the quantity of the particulate matter in the air-flow to be detected that the processor is got is greater than preset value,
It controls the warning device and issues alarm signal, so that staff has found in time, and take measures on customs clearance in time.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. shall be understood in a broad sense, such as may be a fixed connection, may be a detachable connection, or be integrally formed；It can be machinery
Connection is also possible to be electrically connected or can communicate with each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements can be made.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of fugitive dust measuring system characterized by comprising controller, processor, airflow channel and at least two measurement dresses
It sets；
The airflow channel is used for transmission air-flow to be detected, and each measuring device includes laser generator and laser hair
The corresponding photosensitive unit of life device, the laser generator and the photosensitive unit are oppositely arranged on the two sides of the airflow channel；
In each measuring device, the laser generator is for emitting first laser, the direction of the launch of the first laser
It is vertical with the extending direction of the airflow channel；The photosensitive unit is connected to the processor, and the photosensitive unit is for obtaining
The parameter of second laser is taken, and the parameter of the second laser is sent to the processor, wherein the second laser is institute
First laser is stated by the laser after the air-flow reflection to be detected；
Each laser generator is connect with the controller, when the controller is used to control the transmitting of each laser generator
Between, so that the first laser of each laser generator transmitting is reflected by identical air-flow to be detected；The processor is used for
According to the parameter for the second laser that each photosensitive unit is sent, the quantity of particulate matter in the air-flow to be detected is obtained.
2. system according to claim 1, which is characterized in that further include air pump, the air pump setting is logical in the air-flow
The inlet in road, the air pump is for accelerating the air-flow to be detected, so that the air-flow to be detected is in the air-flow
It is transmitted in channel with pre-set velocity.
3. system according to claim 2, which is characterized in that the controller is connect with the air pump；
The controller is also used to control the air pump and the air-flow to be detected is accelerated to the pre-set velocity；
The controller is specifically used for controlling each laser hair according to the distance between each described measuring device and the pre-set velocity
The launch time of raw device, so that the first laser of each laser generator transmitting is reflected by identical air-flow to be detected.
4. system according to claim 3, which is characterized in that it further include timer, the timer and the controller
Connection, the timer are used for the controller transmission time information.
5. system according to claim 1, which is characterized in that the processor is also connect with the controller；The place
Reason device is also used to obtain the parameter of the first laser of each laser generator transmitting from the controller；
The processor is specifically used for according to the parameter of the first laser of each laser generator transmitting and corresponding photosensitive
The parameter for the second laser that unit obtains obtains the corresponding measurement result of each measuring device, and to each measuring device
Corresponding measurement result is weighted and averaged, and obtains the quantity of particulate matter in the air-flow to be detected.
6. system according to claim 1, which is characterized in that further include humidifier, the humidifier is arranged in the gas
The inlet of circulation road, the humidifier are used to be arranged the humidity of the air-flow to be detected.
7. system according to claim 1-6, which is characterized in that the quantity of the measuring device is two.
8. system according to claim 1-6, which is characterized in that it further include display device, the display device
It is connected to the processor, the number of particulate matter in the air-flow to be detected that the display device is used to obtain the processor
Amount carries out real-time display.
9. system according to claim 1-6, which is characterized in that the airflow channel is the cylinder of both ends open
Shape cavity.
10. system according to claim 3, which is characterized in that the distance between adjacent each described measuring device is equal.
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