CN106442240A - Method and device for detecting concentration of peripheral particulate matters of air processing device - Google Patents
Method and device for detecting concentration of peripheral particulate matters of air processing device Download PDFInfo
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- 230000002093 peripheral effect Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title abstract description 24
- 238000012545 processing Methods 0.000 title abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 100
- 239000013618 particulate matter Substances 0.000 claims abstract description 27
- 239000002245 particle Substances 0.000 claims description 64
- 238000009472 formulation Methods 0.000 claims description 9
- 238000013532 laser treatment Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
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- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
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- 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
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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Abstract
The invention discloses a method for detecting the concentration of peripheral particulate matters of an air processing device, and is used in a sensor for detecting the concentration of air particulate matters through laser; the sensor as a peripheral device is mounted on the air processing device; a gas channel of the sensor receives an air flow outputted by the air processing device; the method comprises the following steps: acquiring the wind speed from the air processing device; acquiring an object calculation formula based on the wind speed and a corresponding ruler of pre-stored wind speed and a calculation formula; irradiating the particulate matters in a detection space in the gas channel by the laser, to obtain detection data; and calculating to obtain the concentration of the air particulate matters according to the object calculation formula and the detection data. According to the method for detecting the concentration of the peripheral particulate matters of the air processing device, the air flow pressures in the gas channel are detected firstly, and the air flow pressures are all provided with the corresponding particulate matter concentration calculation formulas, so the concentration of the particulate matters at different wind speeds is calculated.
Description
Technical field
The present invention relates to air detection technology is and in particular to a kind of peripheral hardware particle concentration for air processor is examined
Survey method and device.
Background technology
Carrying out Concentration Testing to the particulate matter of in the air is the indispensable ingredient of environmental monitoring, especially in recent years
Come, in the air PM2.5, PM10 Concentration Testing demand is lifted rapidly.There are in prior art multiple atmosphere particle concentration inspections
Survey method, the 36-40 page of Beijing Polytechnic College's journal first phase in January, 2005 discloses entitled " air
Grain thing Concentration Detection and its development ", author is strong etc. the article of Yang Shushen, Shao Longyi, Gong Tie, which describes multiple differences
Atmosphere particle concentration detection method.
In prior art, the detection method that Concentration Testing is that numerous sensors use is carried out by light scattering to particulate matter,
The inside of such sensor is provided with a gas passage, and gas to be detected passes through gas passage according to normal speed, and gas leads to
There is in road a detection space, a laser generating mechanism transmitting one detection laser irradiating and detecting space, detect in bond in space
Particulate matter reflection detection laser, the laser after reflection sense by laser induced mechanism after formation detection data, processing gas wind
Speed, laser-related parameters and detection data etc. are to obtain the concentration data of particulate matter.
It is in place of the deficiencies in the prior art, the sensor is provided with fan, the concentration data of particulate matter is base
In known wind speed measurement at the uniform velocity, if wind speed is unknown, accurate testing result cannot be obtained.
Content of the invention
It is an object of the invention to provide a kind of peripheral hardware particle concentration detection method for air processor and device,
To solve the weak point of the accurate particle concentration data of the air that cannot obtain unknown wind speed in prior art.
To achieve these goals, the present invention provides following technical scheme：
A kind of peripheral hardware particle concentration detection method for air processor, it is dense to air particle that it is used for laser
Spend on the sensor being detected, this sensor is installed on described air processor as peripheral hardware, the gas of this sensor
Described in channel reception, the air-flow of air processor output, comprises the following steps：
Wind speed is obtained from described air processor；
The wind speed based on described wind speed and prestoring and the rule of correspondence of computing formula obtain target computing formula；
By laser, the particulate matter in the detection space in described gas passage is irradiated obtaining detection data；
Calculated according to described target computing formula and detection data and obtain air particle concentration.
Above-mentioned peripheral hardware particle concentration detection method, described air processor be air purifier, air-conditioning or, wind
Fan or VMC (Ventilation Mechanical Control System) etc..
Above-mentioned peripheral hardware particle concentration detection method, the described step bag that wind speed is obtained from described air processor
Include：
Obtain the gear of described air processor；
The gear based on described gear and prestoring and the rule of correspondence of wind speed obtain target wind speed.
Above-mentioned peripheral hardware particle concentration detection method, the acquisition of the rule of correspondence of described wind speed and computing formula include with
Lower step：
By described detection means, the target air of concentration known is carried out detecting under a constant wind speed and obtain inspection
Survey data；
Calculated respectively according to each computing formula and detection data to obtain multiple calculating concentration respectively；
Each described calculating concentration is contrasted with concentration known respectively, minimum calculating is dense with described concentration known difference
The corresponding computing formula of degree is the computing formula corresponding to this constant wind speed；
Circulation above-mentioned steps, are followed successively by variant wind speed and obtain corresponding computing formula.
Above-mentioned peripheral hardware particle concentration detection method, to various sizes of described particulate matter, described wind speed is public with calculating
The rule of correspondence of formula is different.
A kind of peripheral hardware particle concentration detection means for air processor, including：
Housing, is provided with a gas passage being used for gas circulation to be detected in it；
Controller；
Laser generating mechanism, it is used for the detection spatial emission laser in gas passage；
Laser induced mechanism, the laser of the particulate matter refraction that it receives after testing in space is to obtain detection data；
Also include：
Wind speed acquiring unit, it is used for obtaining wind speed from described air processor；
The wind speed that described controller based on described stream pressure and prestores and the rule of correspondence of computing formula obtain mark
Computing formula, and calculated according to described target computing formula and detection data and obtain air particle concentration.
Above-mentioned peripheral hardware particle concentration detection means, also includes：
Laser treatment mechanism, it is used for the weak laser passing straight through described detection space.
Above-mentioned peripheral hardware particle concentration detection means, described laser treatment mechanism offers cavity, on described cavity
One laser entrance is set, in described cavity, includes multiple weak reflectings surface.
Above-mentioned peripheral hardware particle concentration detection means, described wind speed acquiring unit is radio communication device.
In technique scheme, the peripheral hardware particle concentration detection method that the present invention provides, directly fill from air-treatment
Put acquisition wind speed, each wind speed is provided with corresponding particle concentration computing formula, so realize the granule under different wind speed
The calculating of thing concentration.
Because above-mentioned air particle concentration detection method has above-mentioned technique effect, realize the inspection of this air particle concentration
The air particle concentration detection apparatus of survey method also should have corresponding technique effect.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention described in one
A little embodiments, for those of ordinary skill in the art, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the flow chart of peripheral hardware particle concentration detection method provided in an embodiment of the present invention；
Fig. 2 is the structural representation of peripheral hardware particle concentration detection means provided in an embodiment of the present invention；
Fig. 3 is the structured flowchart of peripheral hardware particle concentration detection means provided in an embodiment of the present invention.
Description of reference numerals：
1st, controller；2nd, laser generating mechanism；3rd, laser induced mechanism；4th, wind speed acquiring unit；5th, laser treatment mechanism；
6th, detect space；7th, air processor.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, below in conjunction with accompanying drawing to this
Bright it is further detailed.
As shown in figure 1, a kind of peripheral hardware particle concentration detection for air processor provided in an embodiment of the present invention
Method, its sensor air particle concentration being detected for laser, this sensor is installed on described as peripheral hardware
On air processor, the gas passage of this sensor receives the air-flow of described air processor output, comprises the following steps：
101st, wind speed is obtained from described air processor；
Specifically, the device that by laser, the particulate matter of in the air is carried out with Concentration Testing is prior art, such as application number
For 201210275567.0, the invention of entitled " assay method of the PM2.5 granule based on laser energy trapping method and device "
Patent, and for example Application No. 201520058933.6, the reality of entitled " a kind of laser dust sensor of employing aerofoil fan "
With new patent, Application No. 201520262471.X for another example, the utility model patent of entitled " a kind of particulate matter sensors "
All disclose the particle concentration detection means based on laser, the detection method that the present embodiment provides can be existing based on these
Detection means, it is mainly improved by, on hardware need not fan of the prior art or air pump, and substitute with a pressure sensing
Device, corresponding relation controller on software prestoring between wind speed and computing formula, here, computing formula may refer to existing in itself
Corresponding in technology, remaining laser generates, receives and detects etc. that structure all refers to showing including above-mentioned patent
There is technology.
In the present embodiment, air processor can be in prior art any run in air carried out stablize lasting
Device, can produce the device of stable uniform speed airflow, such as air-conditioning, fan, air purifier etc., the method that the present embodiment provides
It is used for coordinating air processor as outer equipment, method, its wind speed obtains from air processor.In the present embodiment, can be with many
The mode of kind obtains wind speed, and such as intelligent air device of the prior art is respectively provided with intelligent control chip, tool in intelligent control chip
There are the parameters of air processor, the peripheral hardware particle concentration detection method that the present embodiment provides passes through radio communication device
Wirelessly it is connected with air processor, the wind speed of air processor is obtained with this.Or for Mechanical course or directly
The air processor not having process chip and adopting circuit to control, can be by the control circuit of wire harness and air processor
Connect, the mode such as the pwm signal obtaining the driving fan of air processor with this or serial data, according to pwm signal or string
The modes such as mouth data obtain the wind speed of air processor.The peripheral hardware particle concentration detection method detection that the present embodiment provides
It is the particle concentration of the air-flow of air processor output.
102nd, the wind speed based on wind speed and prestoring and the rule of correspondence of computing formula obtain target computing formula.
Specifically, that is, under different wind speed, calculate the concentration of particulate matter using different computing formula, wind speed is by step
101 acquisitions, computing formula is prior art, and it may refer to the computing formula of all kinds of laser detectors in prior art, wind
The rule of correspondence between speed and computing formula can be obtained by various ways, such as according to existing rule direct access, prior art
In laser detector be respectively provided with corresponding rated wind speed, so can be using laser detection dress corresponding under this rated wind speed
The computing formula put, by the computing formula of the laser detector under comprehensive difference wind friction velocity, you can obtain a series of
Wind speed and the rule of correspondence of computing formula.Can also be detected according to experiment, be obtained air processor beforehand through experiment
Wind speed under different gears, then the corresponding relation between wind speed and particle concentration is obtained by experiment, general, filter membrane is weighed
Method can obtain the absolute figure of particle concentration, is so directed to same air target, obtained absolute according to filter membrane weight method
Particle concentration, presets many computing formula further according to prior art, and obtains a detection data using the method for the present embodiment,
Detection data is substituted into the particle concentration that each computing formula obtains calculating respectively, by the particle concentration of each calculating respectively with filter
Film weight method obtain absolute particle concentration contrasted, the calculating that wherein numerical value is identical or numerical value is closest
The grain corresponding computing formula of thing concentration is the corresponding computing formula under this wind friction velocity, so can obtain wind speed and calculate public affairs
The rule of correspondence between formula.
It is apparent that in addition to aforesaid way, as long as correct computing formula and the rule of correspondence, Ren Heneng finally can be obtained
The method enough realizing this rule of correspondence is all acceptable.
In prior art, rationale here is that of laser detection air particle concentration：One gas passage is set, to be detected
Gas passes through electric fan or air pump drives at the uniform velocity to pass through gas passage, has a detection space in gas passage, and detection space is
The space that crosses with gas passage of laser of laser generating mechanism transmitting, laser is divided into two parts after testing behind space, and wherein one
Part be reflection laser, reflection laser formed by the particulate matter back reflection in laser irradiating and detecting space, another part be without
The direct laser that particulate matter blocks.Reflection laser forms detection data, in prior art, part after laser sensor sensing
Laser sensor uses photo-sensitive cell (as photodiode) the sensing reflection laser of array arrangement, such as Application No.
201420469925.6, the utility model of entitled " PM2.5 detection means "；Fraction of laser light induction installation uses image sensing
Device, the patent of invention of Application No. 201210275567.0 described above.Using different hardware configurations, final granule can be made
The computing formula of thing concentration is different, even for same hardware device, when the wind speed in gas passage is different, its particulate matter
The computing formula of concentration is also different, and the target (PM2.5 or PM10) of detection is different, and computing formula also will not be identical.More enter
One step, the particulate matter of same size, the computing formula of different manufacturers or different patent is detected in identical hardware configuration
May and differ, its reason is, what current laser detection relied on is the more mixed and disorderly particulate matter reflection of its arrangement in addition to concentration
Laser, and the signal of telecommunication is converted into by laser distribution signal finally calculates particle concentration, and the distribution of particle concentration, laser
It is the correspondence to scope for the scope (numerical value set) between signal and the signal of telecommunication, rather than single number is right to single number
Should, so that same hardware configuration can have different computing formula to the particulate matter of same size.
The rule of correspondence of wind speed and computing formula can be obtained after said method, and obtained according to the gas pressure of detection
Get specific computing formula.
103rd, pass through laser the particulate matter in the detection space in gas passage is irradiated obtaining detection data；
Specifically, for different hardware, specific detection data is different, obtains when being detected by photodiode
For the signal of telecommunication, when being detected by imageing sensor, acquisition for image recognition data.This step refers to existing skill
Particulate matter detecting step in art,
104th, calculated according to target computing formula and detection data and obtain air particle concentration.
Specifically, above-mentioned steps 102 obtain computing formula (target computing formula), and step 103 obtains detection data,
So can directly calculate air particle concentration.
The fan of laser detector can be removed by the air particle concentration detection method that the present embodiment provides, and
For different wind speed, be respectively provided with corresponding computing formula, so can different wind speed under various circumstances particulate matter dense
Degree is detected.
Air particle concentration detection method provided in an embodiment of the present invention, directly obtains wind from air processor
Speed, each wind speed is provided with corresponding particle concentration computing formula, so realizes the meter of the particle concentration under different wind speed
Calculate.
It is preferred that being entered to the target air of concentration known by detection means under a constant wind speed in the present embodiment
Row detection is to obtain detection data；Calculated respectively according to each computing formula and detection data to obtain multiple calculating concentration respectively；
Each calculating concentration is contrasted with concentration known respectively, the calculating corresponding to minimum calculating concentration is public with concentration known difference
Formula is the computing formula corresponding to this constant wind speed, as described above, detection means, detection data and each computing formula all can be led to
Cross prior art to obtain, the rule of correspondence each other can be obtained by above-mentioned steps.
In the present embodiment, circulate above-mentioned steps, be followed successively by variant wind speed and obtain corresponding computing formula, you can obtain
The rule of correspondence between the wind speed of full breadth and computing formula.
In the present embodiment, further, to various sizes of particulate matter, wind speed is different from the rule of correspondence of computing formula,
As PM2.5 with PM10 has different computing formula, that is, to same stream pressure, when examination target is for PM2.5, it is that a calculating is public
Formula, when examination target is for PM10, is another computing formula, the acquisition of specific formula for calculation and the rule of correspondence is all again referring to above-mentioned
Step.
As Figure 2-3, also a kind of peripheral hardware particle concentration detection dress for air processor of the embodiment of the present invention
Put, including housing, controller 1, laser generating mechanism 2, laser induced mechanism 3 and wind speed acquiring unit 4, be provided with housing
One gas passage being used for gas circulation to be detected, laser generating mechanism 2 is used for swashing to detection space 6 transmitting in gas passage
Light, laser induced mechanism 3 receives the laser of the particulate matter refraction in space 6 after testing to obtain detection data, and wind speed obtains single
Unit 4 is used for obtaining wind speed from described air processor 7；Wind speed and meter that controller 1 based on stream pressure and prestores
The rule of correspondence calculating formula obtains target computing formula, and calculates acquisition air particles according to target computing formula and detection data
Thing concentration.
Specifically, housing is shell and the inner skeleton of detection means, and controller 1 is process chip and the electricity of detection means
Road plate, it is used for controlling whole detection means and carrying out internal numeric computing.Housing, controller 1, laser generating mechanism 2, laser
Induction mechanism 3 etc. structure all refers to dependency structure of the prior art, and wind speed acquiring unit 4 is used for from described air-treatment
Wind speed is obtained on device 7, wind speed acquiring unit 4 can be radio communication device with wireless connect air processor it is also possible to
It is directly connected to the modes such as pwm signal or the serial data of the driving fan of air processor by circuit.
In the present embodiment, further, also include laser treatment mechanism 5, it is used for weak passing straight through and detects space
Laser, laser treatment mechanism 5 is used for the later laser of weak detection, on concrete structure, laser treatment mechanism 5 can open up sky
Chamber, cavity arranges a laser entrance, includes multiple weak reflectings surface, realize the weak of laser by multipath reflection in cavity,
But optional, laser treatment mechanism 5 can also be light absorbing device, the such as extinction face of black, for absorbing laser.By weak inspection
Survey later laser, on the one hand prevent light pollution, after on the other hand preventing the laser after detection through multiple reflections or reflecting again
Irradiate particulate matter, thus increasing the error rate of detection.
In technique scheme, because above-mentioned air particle concentration detection method has above-mentioned technique effect, realize
The air particle concentration detection apparatus of this air particle concentration detection method also should have corresponding technique effect.
The above some one exemplary embodiment only describing the present invention by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain, in the case of without departing from the spirit and scope of the present invention, can by with various different in the way of to institute
The embodiment of description is modified.Therefore, above-mentioned accompanying drawing and description are inherently illustrative, should not be construed as to the present invention
The restriction of claims.
Claims (9)
1. a kind of peripheral hardware particle concentration detection method for air processor, it is used for laser to air particle concentration
On the sensor being detected, this sensor is installed on described air processor as peripheral hardware, and the gas of this sensor leads to
Road receives the air-flow of described air processor output it is characterised in that comprising the following steps：
Wind speed is obtained from described air processor；
The wind speed based on described wind speed and prestoring and the rule of correspondence of computing formula obtain target computing formula；
By laser, the particulate matter in the detection space in described gas passage is irradiated obtaining detection data；
Calculated according to described target computing formula and detection data and obtain air particle concentration.
2. peripheral hardware particle concentration detection method according to claim 1 is it is characterised in that described air processor is
Air purifier, air-conditioning, fan or VMC (Ventilation Mechanical Control System).
3. peripheral hardware particle concentration detection method according to claim 1 it is characterised in that described from described air-treatment
The step obtaining wind speed on device includes：
Obtain the gear of described air processor；
The gear based on described gear and prestoring and the rule of correspondence of wind speed obtain target wind speed.
4. peripheral hardware particle concentration detection method according to claim 1 is it is characterised in that described wind speed and computing formula
The acquisition of the rule of correspondence comprise the following steps：
By described detection means, the target air of concentration known is carried out detecting under a constant wind speed and obtain detection number
According to；
Calculated respectively according to each computing formula and detection data to obtain multiple calculating concentration respectively；
Each described calculating concentration is contrasted with concentration known respectively, the minimum calculating concentration institute with described concentration known difference
Corresponding computing formula is the computing formula corresponding to this constant wind speed；
Circulation above-mentioned steps, are followed successively by variant wind speed and obtain corresponding computing formula.
5. peripheral hardware particle concentration detection method according to claim 1 it is characterised in that
To various sizes of described particulate matter, described wind speed is different from the rule of correspondence of computing formula.
6. a kind of peripheral hardware particle concentration detection means for air processor, including：
Housing, is provided with a gas passage being used for gas circulation to be detected in it；
Controller；
Laser generating mechanism, it is used for the detection spatial emission laser in gas passage；
Laser induced mechanism, the laser of the particulate matter refraction that it receives after testing in space is to obtain detection data；
It is characterized in that, also include：
Wind speed acquiring unit, it is used for obtaining wind speed from described air processor；
The wind speed that described controller based on described stream pressure and prestores and the rule of correspondence of computing formula obtain target meter
Calculate formula, and acquisition air particle concentration is calculated according to described target computing formula and detection data.
7. peripheral hardware particle concentration detection means according to claim 6 is it is characterised in that also include：
Laser treatment mechanism, it is used for the weak laser passing straight through described detection space.
8. peripheral hardware particle concentration detection means according to claim 6 is it is characterised in that in described laser treatment mechanism
Offer cavity, described cavity arranges a laser entrance, in described cavity, include multiple weak reflectings surface.
9. peripheral hardware particle concentration detection means according to claim 6 is it is characterised in that described wind speed acquiring unit is
Radio communication device.
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| CN109724905A (en) * | 2017-10-30 | 2019-05-07 | 常州海马科技有限公司 | Particle concentration detection device, method and air processor |
| CN109724905B (en) * | 2017-10-30 | 2024-02-20 | 常州海马科技有限公司 | Particulate matter concentration detection equipment, particulate matter concentration detection method and air treatment device |
| CN108195730A (en) * | 2018-03-08 | 2018-06-22 | 清华大学 | The peripherals detector and system of air particle |
| CN108982312A (en) * | 2018-07-03 | 2018-12-11 | 海拉（厦门）电气有限公司 | A kind of system of the interior outer PM2.5 concentration of dual-coil electromagnetic valve detection |
| CN108982312B (en) * | 2018-07-03 | 2021-03-19 | 海拉（厦门）电气有限公司 | System for two solenoid valves detect inside and outside PM2.5 concentration of car |
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