CN104067106A - Particulate matter (PM) 2.5 concentration detection device and detection method, and air quality detector - Google Patents
Particulate matter (PM) 2.5 concentration detection device and detection method, and air quality detector Download PDFInfo
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- CN104067106A CN104067106A CN201480000500.3A CN201480000500A CN104067106A CN 104067106 A CN104067106 A CN 104067106A CN 201480000500 A CN201480000500 A CN 201480000500A CN 104067106 A CN104067106 A CN 104067106A
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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
Abstract
The present invention is suitable for the technical field of air quality detection, and provides a particulate matter (PM) 2.5 concentration detection device and detection method, and an air quality detector. The PM2.5 concentration detection device comprises a light intensity conversion module used for gathering light intensity diffused by air particles and converting the light intensity into a particle pulse signal, when a laser irridates air particles of concentrated wind of a wind blowing assembly; a signal amplification module used for amplifying the particle pulse signal and generating an amplified particle pulse signal; a PM2.5 comparison module used for comparing the amplitude of the amplified particle pulse signal with that of a preset PM2.5 detection voltage pulse signal, and outputting the pulse signal when it is obtained that the amplitude of the amplified particle pulse signal is larger than that of the preset PM2.5 detection voltage pulse signal; and PM2.5 concentration processing module used for detecting the PM2.5 concentration of the environment according to the number of PM 2.5 and the wind speed of the concentrated wind blowing of the wind blowing assembly. The detection precision of the PM2.5 concentration of the air quality detector is raised.
Description
Technical field
The invention belongs to Detection of Air Quality technical field, relate in particular to a kind of PM2.5 concentration detection apparatus, detection method and air quality detector.
Background technology
Along with the air quality detector arrival in intelligent epoch, the configuration of air quality detector from strength to strength, function is more and more complete, increasing user carries out Detection of Air Quality by air quality detector, in different place Detection of Air Quality, and show the airborne PM2.5 concentration detecting, so that user understands the quality of the air of environment of living in.
Yet, PM2.5 concentration due to air quality detector detection air in prior art, need to adopt the sampler of the PM2.5 of large volume, just PM2.5 concentration can be detected, yet air quality detector is to be used in different place Detection of Air Quality, when adopting the sampler of PM2.5 of large volume, air quality detector is inconvenient to carry, when adopting the sampler of PM2.5 of small size, actual samples to the signal of PM2.5 will weaken thereupon, PM2.5 concentration accurately cannot be detected, thereby reduced the accuracy of detection of PM2.5 concentration in air quality detector.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of PM2.5 concentration detection method, be intended to solve in prior art when adopting the sampler of PM2.5 of large volume, air quality detector is inconvenient to carry, when adopting the sampler of PM2.5 of small size, actual samples to the signal of PM2.5 will weaken thereupon, PM2.5 concentration accurately cannot be detected, reduce the accuracy of detection of PM2.5 concentration in air quality detector.
The embodiment of the present invention is achieved in that a kind of PM2.5 concentration detection apparatus, comprising:
Light intensity modular converter, for when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collects the light intensity of described air particles scattering, and described light intensity is converted to particle pulse signal;
The signal amplification module that input end is connected with the output terminal of described light intensity modular converter, for described particle pulse signal is amplified, generates and amplifies particle pulse signal;
The PM2.5 comparison module that input end is connected with the output terminal of described signal amplification module, for the amplitude of described amplification particle pulse signal is compared with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output pulse signal;
The concentration processing module that input end is connected with the output terminal of described PM2.5 comparison module, for receiving the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly, concentrate the wind speed of air-supply, detect the PM2.5 concentration of environment of living in.
Another object of the embodiment of the present invention is to provide a kind of detection method based on PM2.5 concentration detection apparatus, comprising:
When light intensity modular converter is concentrated the air particles of air-supply when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly, collect the light intensity of described air particles scattering, described light intensity is converted to particle pulse signal;
Signal amplification module amplifies described particle pulse signal, generates and amplifies particle pulse signal;
PM2.5 comparison module is compared the amplitude of described amplification particle pulse signal with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output pulse signal;
PM2.5 concentration processing module receives the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly, concentrates the wind speed of air-supply, detects the PM2.5 concentration of environment of living in.
Another object of the embodiment of the present invention is to provide a kind of air quality detector, comprises above-mentioned PM2.5 concentration detection apparatus and an air-supply assembly, and described air-supply assembly is for concentrating air-supply to described PM2.5 concentration detection apparatus.
In the present embodiment, air quality detector is by signal amplification module, particle pulse signal is amplified, generate and amplify particle pulse signal, and by PM2.5 comparison module, obtain PM2.5 number, follow-up by PM2.5 concentration processing module, detect the PM2.5 concentration of environment of living in, solved when adopting the sampler of PM2.5 of small size, actual samples to the signal of PM2.5 will weaken thereupon, the problem of PM2.5 concentration accurately cannot be detected, thereby improve the accuracy of detection of PM2.5 concentration in air quality detector.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the air quality detector that provides of the embodiment of the present invention;
Fig. 2 is the diagrammatic cross-section of the air-supply assembly 10 that provides of the embodiment of the present invention;
Fig. 3 is the structured flowchart of the PM2.5 concentration detection apparatus 20 that provides of the embodiment of the present invention;
Fig. 4 is the structural drawing of the light intensity modular converter 201 that provides of the embodiment of the present invention;
Fig. 5 is the structural drawing of the signal amplification module 202 that provides of the embodiment of the present invention;
Fig. 6 is the structural drawing of the PM2.5 comparison module 203 that provides of the embodiment of the present invention;
Fig. 7 is the circuit diagram of the PM2.5 concentration detection apparatus 20 that provides of the embodiment of the present invention;
Fig. 8 is the realization flow figure of the detection method based on PM2.5 concentration detection apparatus that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
embodiment mono-
With reference to figure 1, Fig. 1 is the structured flowchart of the air quality detector that provides of the embodiment of the present invention.
Wherein, in this air quality detector, comprise PM2.5 concentration detection apparatus 20 and an air-supply assembly 10, described air-supply assembly 10 is for concentrating air-supply to described PM2.5 concentration detection apparatus 20.
Fig. 2 is the diagrammatic cross-section of the air-supply assembly 10 that provides of the embodiment of the present invention.
On mount pad 15, perpendicular to air outlet, be provided with for the mounting hole 152 of PM2.5 concentration detection apparatus 20 is installed, mounting hole 152 connects with air outlet, and PM2.5 concentration detection apparatus 20 is installed on the position that mounting hole 152 and air outlet connect.By such setting, air can be transported to air outlet place, and because mounting hole 152 and air outlet are to connect, mobile like this air just can flow in mounting hole 152, thereby the PM2.5 concentration detection apparatus 20 that is positioned at mounting hole 152 can detect airborne PM2.5, in addition because the wind speed in mounting hole 152 is slower, so PM2.5 concentration detection apparatus 20 can detect fully to the PM2.5 in wind, strengthened the accuracy that PM2.5 concentration detects.
embodiment bis-
With reference to figure 3, Fig. 3 is the structured flowchart of the PM2.5 concentration detection apparatus 20 that provides of the embodiment of the present invention, and this device can run on PM2.5 sensor.For convenience of explanation, only show the part relevant to the present embodiment.
With reference to Fig. 3, this PM2.5 concentration detection apparatus 20, comprising:
Light intensity modular converter 201, for when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collects the light intensity of described air particles scattering, and described light intensity is converted to particle pulse signal;
The signal amplification module 202 that input end is connected with the output terminal of described light intensity modular converter 201, for described particle pulse signal is amplified, generates and amplifies particle pulse signal;
The PM2.5 comparison module 203 that input end is connected with the output terminal of described signal amplification module 202, for the amplitude of described amplification particle pulse signal is compared with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output pulse signal;
The concentration processing module 204 that input end is connected with the output terminal of described PM2.5 comparison module 203, for receiving the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly 10, concentrate the wind speed of air-supply, detect the PM2.5 concentration of environment of living in.
In the present embodiment, air quality detector is by signal amplification module 202, particle pulse signal is amplified, generate and amplify particle pulse signal, and by PM2.5 comparison module 203, obtain PM2.5 number, follow-up by PM2.5 concentration processing module 204, detect the PM2.5 concentration of environment of living in, solved when adopting the sampler of PM2.5 of small size, actual samples to the signal of PM2.5 will weaken thereupon, the problem of PM2.5 concentration accurately cannot be detected, thereby improve the accuracy of detection of PM2.5 concentration in air quality detector.
In an embodiment of the present embodiment, in this PM2.5 concentration detection apparatus 20, described PM2.5 concentration processing module 204 adopts control chip U4, and described control chip U4 comprises:
Detecting unit, for concentrating the wind speed of air-supply according to described PM2.5 number and described air-supply assembly 10, detects interim PM2.5 concentration;
Extraction unit, for the PM2.5 concentration at record, extracts the PM2.5 concentration of rise time sequence top N;
Averaging unit, for by interim PM2.5 concentration and the PM2.5 concentration addition that extracts top N, is averaged concentration, the PM2.5 concentration that described mean concentration is current environment of living in, and described N is greater than 1 integer.
In an embodiment of the present embodiment, in this PM2.5 concentration detection apparatus 20, described PM2.5 concentration processing module 204 adopts control chip U4, and described control chip U4 comprises:
Performance element, for when start event being detected, while carrying out the described air particles when the concentrated air-supply of Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly, collects the light intensity of described air particles scattering, described light intensity is converted to the step of particle pulse signal.
The device that the embodiment of the present invention provides can be applied in the embodiment of the method for following correspondence, and details are shown in the description of following embodiment, at this, do not describe.
embodiment tri-
With reference to figure 4, Fig. 4 is the structural drawing of the light intensity modular converter 201 that provides of the embodiment of the present invention, wherein,
Described light intensity modular converter 201 comprises:
Phototriode T, resistance R 1, capacitor C 1, capacitor C 2, power supply VCC1;
The output terminal of the very described light intensity modular converter 201 of the transmitting of described phototriode T;
Power supply VCC1 described in the first termination of described R1;
After described capacitor C 1 is in parallel with described capacitor C 2, the second end of a common port and described R1 is connected on the collector of described phototriode T altogether, other end common end grounding;
The output terminal of the very described light intensity modular converter 201 of the transmitting of described phototriode T.
Its principle of work is as follows:
Phototriode T, for turning circuit, when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collects the light intensity of described air particles scattering, and described light intensity is converted to particle pulse signal.
embodiment tetra-
With reference to figure 5, Fig. 5 is the structural drawing of the signal amplification module 202 that provides of the embodiment of the present invention, and wherein, described signal amplification module 202 comprises:
Resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, amplifier U1, amplifier U2 and power supply VCC2;
The inverting input of described amplifier U1 is the input end of described signal amplification module 202;
After described resistance R 2 is in parallel with described capacitor C 3, a common port is connected on the inverting input of described amplifier U1, and the first end of another common port and described capacitor C 4 is connected on the output terminal of described amplifier U1 altogether;
The second end of described capacitor C 4 is connected with the first end of described resistance R 3;
After described resistance R 4 is in parallel with described capacitor C 5, the second end of a common port and described resistance R 3 is connected on the inverting input of described amplifier U2 altogether, and another common port is connected on the output terminal of described amplifier U2;
Power supply VCC2 described in the first termination of described resistance R 5;
A common end grounding after described resistance R 6 is in parallel with electric capacity R6, the second end of another common port, described resistance R 5 and the input end in the same way of described amplifier U1, be connected on the input end in the same way of described amplifier U2 altogether;
The output terminal of described amplifier U2 is the output terminal of described signal amplification module 202.
Its principle of work is as follows:
Capacitor C 4 is for stopping direct current, and capacitor C 3, capacitor C 5, capacitor C 6 are all for filtering high-frequency signal, and particle pulse signal amplifies through amplifier U1 and amplifier U2, generates and amplifies particle pulse signal.
embodiment five
With reference to figure 6, Fig. 6 is the structural drawing of the PM2.5 comparison module 203 that provides of the embodiment of the present invention, and wherein, described PM2.5 comparison module 203 comprises:
Resistance R 7, resistance R 8, resistance R 9, resistance R 10, capacitor C 7, comparer U3 and power supply VCC3;
The first end of described capacitor C 7 is the input end of described PM2.5 comparison module 203;
The second end of described capacitor C 7 and one end of described resistance R 7 are connected on the in-phase input end of described comparer U3 altogether, the other end ground connection of described resistance R 7;
One end of one end of described resistance R 8 and described resistance R 9 is connected on the inverting input of described comparer U3 altogether, power supply VCC3 described in another termination of described resistance R 8, the other end ground connection of described resistance R 9;
The first end of described resistance R 10 connects the output terminal of described comparer U3, and the second end of described resistance R 10 is the output terminal of described PM2.5 comparison module 203.
Principle of work is as follows:
Power supply VCC3 is by resistance R 8 and R9, generate and detect PM2.5 voltage pulse signal, comparer U3 compares the amplitude of amplifying particle pulse signal with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output high level pulse signal.
embodiment six
With reference to figure 7, Fig. 7 is the circuit diagram of the PM2.5 concentration detection apparatus 20 that provides of the embodiment of the present invention.
Its principle of work, can reference
embodiment bis-,
embodiment tri-,
embodiment tetra-,
embodiment five, at this, do not repeat.
embodiment seven
Fig. 8 is the realization flow figure of the detection method based on PM2.5 concentration detection apparatus that provides of the embodiment of the present invention, and details are as follows:
In step S801, when light intensity modular converter 201 is concentrated the air particles of air-supply when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly, collect the light intensity of described air particles scattering, described light intensity is converted to particle pulse signal;
In step S802, by first signal amplifier and secondary signal amplifier, described particle pulse signal is amplified, generate and amplify particle pulse signal;
In step S803, PM2.5 comparison module 203 is compared the amplitude of described amplification particle pulse signal with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output pulse signal;
In step S804, PM2.5 concentration processing module 204 receives the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly 10, concentrate the wind speed of air-supply, detect the PM2.5 concentration of environment of living in.
In the present embodiment, air quality detector is by signal amplification module 202, particle pulse signal is amplified, generate and amplify particle pulse signal, and by PM2.5 comparison module 203, obtain PM2.5 number, follow-up by PM2.5 concentration processing module 204, detect the PM2.5 concentration of environment of living in, solved when adopting the sampler of PM2.5 of small size, actual samples to the signal of PM2.5 will weaken thereupon, the problem of PM2.5 concentration accurately cannot be detected, thereby improve the accuracy of detection of PM2.5 concentration in air quality detector.
embodiment eight
The present embodiment has mainly been described the implementation process of the PM2.5 concentration that detects environment of living in, and details are as follows:
PM2.5 concentration processing module 204 is concentrated the wind speed of air-supply according to described PM2.5 number and described air-supply assembly 10, detects interim PM2.5 concentration;
In the PM2.5 concentration of record, extract the PM2.5 concentration of rise time sequence top N;
By interim PM2.5 concentration and the PM2.5 concentration addition that extracts top N, be averaged concentration, the PM2.5 concentration that described mean concentration is environment of living in, described N is greater than 1 integer.
Wherein, after generating PM2.5 concentration, PM2.5 concentration, the rise time of PM2.5 concentration and the number of PM2.5 concentration that record generates.
When the number of record arrives default value, by ranking functions, according to the rise time of record, the PM2.5 concentration of record is sorted.PM2.5 concentration addition by interim temperature value with sequence top N, is averaged temperature, and medial temperature is current PM2.5 concentration, and N is greater than 1 integer.
In embodiments of the present invention, the number N of rank can user establish certainly, also can pass through system default, at this, does not limit.Because the quantity of PM2.5 concentration is more, therefore by empirical value, set the numerical value of N, preferably, the numerical value of N is 20.Thereby can be according to the medial temperature of front 20 PM2.5 concentration and interim temperature value, thereby generated PM2.5 concentration, avoided like this air quality detector to sample the instability of temperature data at every turn, made temperature data more steady, the PM2.5 concentration precision obtaining is higher.
embodiment nine
The present embodiment has mainly been described and has been carried out in actual applications preferably implementation process of the present invention, and details are as follows:
When start event being detected, carry out when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collect the light intensity of described air particles scattering, described light intensity is converted to the step of particle pulse signal.
Wherein, will start shooting event as trigger condition.By hardware or software, detect start event, when start event being detected, carry out when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collect the light intensity of described air particles scattering, described light intensity is converted to the step of particle pulse signal, thereby guaranteed after air quality detector start, can carry out when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collect the light intensity of air particles scattering, described light intensity is converted to the step of particle pulse signal.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential common hardware by software and realizes.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium can read, as the floppy disk of computing machine, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. a PM2.5 concentration detection apparatus, is characterized in that, comprising:
Light intensity modular converter, for when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly is concentrated the air particles of air-supply, collects the light intensity of described air particles scattering, and described light intensity is converted to particle pulse signal;
The signal amplification module that input end is connected with the output terminal of described light intensity modular converter, for described particle pulse signal is amplified, generates and amplifies particle pulse signal;
The PM2.5 comparison module that input end is connected with the output terminal of described signal amplification module, for the amplitude of described amplification particle pulse signal is compared with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output pulse signal;
The concentration processing module that input end is connected with the output terminal of described PM2.5 comparison module, for receiving the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly, concentrate the wind speed of air-supply, detect the PM2.5 concentration of environment of living in.
2. PM2.5 concentration detection apparatus as claimed in claim 1, is characterized in that, described light intensity modular converter comprises:
Phototriode T, resistance R 1, capacitor C 1, capacitor C 2, power supply VCC1;
Power supply VCC1 described in the first termination of described R1;
After described capacitor C 1 is in parallel with described capacitor C 2, the second end of a common port and described R1 is connected on the collector of described phototriode T altogether, other end common end grounding;
The output terminal of the very described light intensity modular converter of the transmitting of described phototriode T.
3. PM2.5 concentration detection apparatus as claimed in claim 1, is characterized in that, described signal amplification module comprises:
Resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, amplifier U1, amplifier U2 and power supply VCC2;
The inverting input of described amplifier U1 is the input end of described signal amplification module;
After described resistance R 2 is in parallel with described capacitor C 3, a common port is connected on the inverting input of described amplifier U1, and the first end of another common port and described capacitor C 4 is connected on the output terminal of described amplifier U1 altogether;
The second end of described capacitor C 4 is connected with the first end of described resistance R 3;
After described resistance R 4 is in parallel with described capacitor C 5, the second end of a common port and described resistance R 3 is connected on the inverting input of described amplifier U2 altogether, and another common port is connected on the output terminal of described amplifier U2;
Power supply VCC2 described in the first termination of described resistance R 5;
A common end grounding after described resistance R 6 is in parallel with electric capacity R6, the second end of another common port, described resistance R 5 and the input end in the same way of described amplifier U1, be connected on the input end in the same way of described amplifier U2 altogether;
The output terminal of described amplifier U2 is the output terminal of described signal amplification module.
4. PM2.5 concentration detection apparatus as claimed in claim 1, is characterized in that, described PM2.5 comparison module comprises:
Resistance R 7, resistance R 8, resistance R 9, resistance R 10, capacitor C 7, comparer U3 and power supply VCC3;
The first end of described capacitor C 7 is the input end of described PM2.5 comparison module;
The second end of described capacitor C 7 and one end of described resistance R 7 are connected on the in-phase input end of described comparer U3 altogether, the other end ground connection of described resistance R 7;
One end of one end of described resistance R 8 and described resistance R 9 is connected on the inverting input of described comparer U3 altogether, power supply VCC3 described in another termination of described resistance R 8, the other end ground connection of described resistance R 9;
The first end of described resistance R 10 connects the output terminal of described comparer U3, and the second end of described resistance R 10 is the output terminal of described PM2.5 comparison module.
5. PM2.5 concentration detection apparatus as claimed in claim 1, is characterized in that, described PM2.5 concentration processing module adopts control chip U4, and described control chip U4 comprises:
Detecting unit, for concentrating the wind speed of air-supply according to described PM2.5 number and described air-supply assembly, detects interim PM2.5 concentration;
Extraction unit, for the PM2.5 concentration at record, extracts the PM2.5 concentration of rise time sequence top N;
Averaging unit, for by interim PM2.5 concentration and the PM2.5 concentration addition that extracts top N, is averaged concentration, the PM2.5 concentration that described mean concentration is current environment of living in, and described N is greater than 1 integer.
6. PM2.5 concentration detection apparatus as claimed in claim 1, is characterized in that, described PM2.5 concentration detection apparatus adopts control chip U4, and described control chip U4 comprises:
Performance element, for when start event being detected, while carrying out the described air particles when the concentrated air-supply of Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly, collects the light intensity of described air particles scattering, and described light intensity is converted to particle pulse signal.
7. a detection method for the PM2.5 concentration detection apparatus based on described in claim 1 to 6 any one claim, is characterized in that, comprising:
When light intensity modular converter is concentrated the air particles of air-supply when Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly, collect the light intensity of described air particles scattering, described light intensity is converted to particle pulse signal;
Signal amplification module amplifies described particle pulse signal, generates and amplifies particle pulse signal;
PM2.5 comparison module is compared the amplitude of described amplification particle pulse signal with the amplitude of default detection PM2.5 voltage pulse signal, when being relatively greater than the amplitude of default PM2.5 voltage pulse signal to the amplitude of described amplification particle pulse signal, output pulse signal;
PM2.5 concentration processing module receives the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly, concentrates the wind speed of air-supply, detects the PM2.5 concentration of environment of living in.
8. detection method as claimed in claim 7, it is characterized in that, described PM2.5 concentration processing module receives the pulse signal of output, count the number of described pulse signal, the number of described pulse signal is PM2.5 number, according to described PM2.5 number and described air-supply assembly, concentrate the wind speed of air-supply, detect the PM2.5 concentration of environment of living in, be specially:
PM2.5 concentration processing module is concentrated the wind speed of air-supply according to described PM2.5 number and described air-supply assembly, detect interim PM2.5 concentration;
In the PM2.5 concentration of record, extract the PM2.5 concentration of rise time sequence top N;
By interim PM2.5 concentration and the PM2.5 concentration addition that extracts top N, be averaged concentration, the PM2.5 concentration that described mean concentration is environment of living in, described N is greater than 1 integer.
9. detection method as claimed in claim 7 or 8, is characterized in that, described detection method also comprises:
When start event being detected, while carrying out the described air particles when the concentrated air-supply of Ear Mucosa Treated by He Ne Laser Irradiation air-supply assembly, collect the light intensity of described air particles scattering, described light intensity is converted to particle pulse signal.
10. an air quality detector, is characterized in that, comprises PM2.5 concentration detection apparatus and an air-supply assembly described in claim 1 to 6 any one claim, and described air-supply assembly is for concentrating air-supply to described PM2.5 concentration detection apparatus.
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| PCT/CN2014/081239 WO2016000161A1 (en) | 2014-06-30 | 2014-06-30 | Pm2.5 concentration detection device, detection method and air quality detector |
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| CN104330341A (en) * | 2014-10-30 | 2015-02-04 | 哈尔滨幻石科技发展有限公司 | Small compressed-air-based PM2.5-concentration detection device |
| CN104865175A (en) * | 2015-05-20 | 2015-08-26 | 常州大学 | Method for detecting concentration of PM2.5 (particulate matter) in air |
| WO2016000161A1 (en) * | 2014-06-30 | 2016-01-07 | 深圳华盛昌机械实业有限公司 | Pm2.5 concentration detection device, detection method and air quality detector |
| CN105259086A (en) * | 2015-10-29 | 2016-01-20 | 广东美的制冷设备有限公司 | Detection method and system of dust concentration |
| CN105259085A (en) * | 2015-10-20 | 2016-01-20 | 武汉三众和光电科技有限公司 | Dust concentration measurement system of laser dust sensor and dust concentration measurement method |
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| CN108956395A (en) * | 2017-05-18 | 2018-12-07 | 中兴通讯股份有限公司 | A kind of method and terminal of air atom Concentration Testing |
| CN108956395B (en) * | 2017-05-18 | 2021-01-08 | 中兴通讯股份有限公司 | Method and terminal for detecting air particle concentration |
| CN108469404A (en) * | 2018-02-01 | 2018-08-31 | 王林林 | A kind of PM2.5 concentration estimating system and method |
| CN108469404B (en) * | 2018-02-01 | 2020-06-02 | 滨州学院 | PM2.5 concentration estimation system and method |
| CN108426809A (en) * | 2018-02-28 | 2018-08-21 | 杭州电子科技大学 | One kind being based on the sidewise scattered round-the-clock PM2.5 concentration real-time detection apparatus of CCD |
| CN110215785A (en) * | 2019-06-25 | 2019-09-10 | 哈尔滨工程大学 | It is a kind of adapt to haze concentration remove haze method |
| CN110514566A (en) * | 2019-08-28 | 2019-11-29 | 徐州治鼎环境科技有限公司 | A kind of novel flue dust measuring device and method |
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| WO2016000161A1 (en) | 2016-01-07 |
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