CN108593504A - A kind of device design method of detectable PM2.5 size and shapes - Google Patents
A kind of device design method of detectable PM2.5 size and shapes Download PDFInfo
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- CN108593504A CN108593504A CN201711430864.7A CN201711430864A CN108593504A CN 108593504 A CN108593504 A CN 108593504A CN 201711430864 A CN201711430864 A CN 201711430864A CN 108593504 A CN108593504 A CN 108593504A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003384 imaging method Methods 0.000 claims abstract description 46
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000013618 particulate matter Substances 0.000 description 7
- 238000009877 rendering Methods 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002356 laser light scattering Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
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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
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a kind of device design methods of detectable PM2.5 size and shapes, it is characterized in that：It includes at least：Parallel cavity, processor, LCD display, the negative pressure generation unit of parallel cavity side, the cmos image sensor of the imaging lens and imaging lens imaging surface vertical with parallel cavity, the focal distance L of imaging lens is on transparent parallel cavity center line, the Depth of field D of imaging lens is the width of parallel cavity, negative pressure generation unit with will be containing forming detection air duct in the parallel cavity of the gas of PM2.5 particulate matters introducing, cmos image sensor image-forming information is handled by processor, on an lcd display by the PM2.5 particulate matters imaging display of different sizes and shapes.This method, so that the size and shape of detection fine grained PM2.5 can be facilitated.
Description
Technical field
The present invention relates to a kind of particulate matter diameter detection method, especially a kind of dress of detectable PM2.5 size and shapes
Set design method.
Background technology
PM2.5 is also known as particulate, fine grained.PM2.5：Refer to aerodynamics equivalent diameter in surrounding air and is less than or equal to 2.5
μm （Micron）Particulate matter, also referred to as fine particle.This value is higher, and it is more serious just to represent air pollution.Pellet is again
Referred to as PM10 refers to equivalent aerodynamic diameter in 10 microns of particulate matters below.
Although fine particle is the component that content is seldom in earth atmosphere ingredient, it is to air quality and visibility etc.
There is important influence.Fine particle grain size is small, and the residence time containing a large amount of poisonous and harmful substances and in an atmosphere is long, defeated
Send distance remote, thus to the influence bigger of health and atmosphere quality.
Fine particle（Particulate）Refer to the micro-solid or liquid being suspended in gas.In urban air matter
Amount daily paper or pellet in weekly and overall suspended pellet are two kinds of atmosphere pollutions that people are familiar with.It can inhale
Enter particulate matter and be also known as PM10, refer to diameter and be equal to or less than 10 microns, the particulate matter of the respiratory system of people can be entered；It is total to suspend
Particulate matter is also referred to as PM100, i.e. diameter is less than and the particulate matter equal to 100 microns.
It is less than the suspended particles of 10 micron diameters in the middle, is defined as respirable suspended particulate, they can accumulate in lung
Portion endangers human health.Diameter is less than 2.5 microns of particle, and harm to the human body is maximum, because it can be directly entered alveolar.
The content of this particle during science household PM2.5 is indicated per cubic metres of air, this value is higher, and it is tighter just to represent air pollution
Weight.
The instrument of light scattering method is external, domestic manufacturer is more.It is divided into general light scatter and laser light scattering method.Because swashing
Repeatability, the stability of light light scattering method instrument are good, in American-European-Japanese comprehensive substitution general light scatter method.But domestic laser
The instrument quality difference of method is larger, it should be noted that the secure factory of selection quality.
Inventor discloses one kind in the patent applied《PM2.5 detection methods based on wide-angle Fourier transformation》,
This method can the tiny PM2.5 sizes of non-contact detecting, but specific PM2.5 shapes can not be detected, this is to refining and dividing
Analysing influence of the PM2.5 shapes in human body cannot effectively be assessed.
Invention content
The object of the present invention is to provide a kind of methods of detectable PM2.5 size and shapes, to facilitate thin of detection
The size and shape of grain PM2.5.
The object of the present invention is achieved like this, a kind of device design method of detectable PM2.5 size and shapes, special
Sign is：It includes at least：Parallel cavity, processor, LCD display, parallel cavity side negative pressure generation unit, with parallel cavity
The cmos image sensor of vertical imaging lens and imaging lens imaging surface, the focal distance L of imaging lens is transparent parallel
On cavity center line, the Depth of field D of imaging lens is the width of parallel cavity, negative pressure generation unit with will contain PM2.5
The gas of particulate matter, which introduces in parallel cavity, forms detection air duct, and cmos image sensor image-forming information is handled by processor,
On an lcd display by the PM2.5 particulate matters imaging display of different sizes and shapes.
The Depth of field D=preceding the depth of field of the rear depth of field-, wherein before the preceding depth of field=D δ L2/f2+ D δ L, the rear depth of field=D δ L2/
F2-D δ L, D are the shooting f-numbers of camera lens, and L is focal distance, and δ is that allow disperse circular diameter f be lens focus.
The parallel cavity is the transparent body.
The parallel cavity of the transparent body has lighting source at image side.
The lighting source is irradiated to the adjustable angle of the parallel cavity of the transparent body.
The lighting source brightness is adjustable.
The processor includes at least a control, and control is used for by the PM2.5 particulate matters of different sizes and shapes
The calibration object of reference correction size of establishing criteria provides detected size.
The minimum depth of field of the width imaging lens of the parallel cavity designs, so that the high-frequency information of PM2.5 particulate matters
It is imaged on cmos image sensor.
It is an advantage of the invention that：The present invention includes：Parallel cavity, processor, LCD display peace an actor's rendering of an operatic tune road side it is negative
Pressure generates unit, further includes the cmos image sensor of the imaging lens and imaging lens imaging surface vertical with parallel cavity, at
As the focal distance L of camera lens is on transparent parallel cavity center line, the Depth of field D of imaging lens is the width of parallel cavity,
Negative pressure generation unit with will be containing detection air duct be formed in the parallel cavity of the gas of PM2.5 particulate matters introducing, cmos image passes
Sensor image-forming information is handled by processor, includes in LCD display by the PM2.5 particulate matters imaging of different sizes and shapes
On, since the width of parallel cavity is not counted according to imaging lens and the minimum depth of field having, so that the high frequency letter of PM2.5 particulate matters
Breath is imaged on cmos image sensor, facilitates the size and shape of detection fine grained PM2.5.
Description of the drawings
With reference to embodiment, the invention will be further described：
Fig. 1 is 1 structural schematic diagram of the embodiment of the present invention；
Fig. 2 is 2 structural schematic diagram of the embodiment of the present invention.
In figure, 1, parallel cavity；2, imaging lens；3, cmos image sensor；4, processor；5, LCD display；6、
Lighting source；7, air duct is detected；8, PM2.5 particulate matters；9, negative pressure generation unit；10, center line.
Specific implementation mode
Embodiment 1
As shown in Figure 1, a kind of device design method of detectable PM2.5 size and shapes, it is characterized in that：It includes at least：It is parallel
The negative pressure generation unit 9 of 1 side of cavity 1, processor 4, LCD display 5 peaceful an actor's rendering of an operatic tune road, further includes vertical with parallel cavity 1
2 imaging surface of imaging lens 2 and imaging lens cmos image sensor 3, the focal distance L of imaging lens 2 is transparent parallel
On 1 center line 10 of cavity, the Depth of field D of imaging lens 2 is the width of parallel cavity 1, negative pressure generation unit 9 with will contain
The gas of PM2.5 particulate matters 8, which introduces in parallel cavity 1, forms detection air duct 7, and 3 image-forming information of cmos image sensor passes through place
It manages device 4 to handle, includes on LCD display 5 by the imaging of PM2.5 particulate matters 8 of different sizes and shapes.
The Depth of field D=preceding the depth of field of the rear depth of field-, wherein the preceding depth of field=D δ L2/f2+ D δ L, the rear depth of field=D δ L2Before/
f2- D δ L, D are the shooting f-numbers of camera lens, and L is focal distance, and δ is that allow disperse circular diameter f be lens focus.Described is flat
An actor's rendering of an operatic tune road 1 is the transparent body.
Embodiment 2
As shown in Fig. 2, a kind of device design method of detectable PM2.5 size and shapes, it is characterized in that：It includes at least：It is parallel
The negative pressure generation unit 9 of 1 side of cavity 1, processor 4, LCD display 5 peaceful an actor's rendering of an operatic tune road, further includes vertical with parallel cavity 1
2 imaging surface of imaging lens 2 and imaging lens cmos image sensor 3, the focal distance L of imaging lens 2 is transparent parallel
On 1 center line 10 of cavity, the Depth of field D of imaging lens 2 is the width of parallel cavity 1, negative pressure generation unit 9 with will contain
The gas of PM2.5 particulate matters 8, which introduces in parallel cavity 1, forms detection air duct 7, and 3 image-forming information of cmos image sensor passes through place
It manages device 4 to handle, includes on LCD display 5 by the imaging of PM2.5 particulate matters 8 of different sizes and shapes.The depth of field=after
The preceding depth of field of the depth of field-, wherein the preceding depth of field=D δ L2/f2+ D δ L, the rear depth of field=D δ L2Before/f2- D δ L, D are the shooting f-numbers of camera lens,
L is focal distance, and δ is that allow disperse circular diameter f be lens focus.The parallel cavity of the transparent body has illumination light at image side
Source 6.The lighting source 6 is irradiated to the adjustable angle of the parallel cavity of the transparent body.6 brightness of lighting source is adjustable.
Embodiment 3
As shown in Fig. 2, a kind of device design method of detectable PM2.5 size and shapes, it is characterized in that：It includes at least：It is parallel
The negative pressure generation unit 9 of 1 side of cavity 1, processor 4, LCD display 5 peaceful an actor's rendering of an operatic tune road, further includes vertical with parallel cavity 1
2 imaging surface of imaging lens 2 and imaging lens cmos image sensor 3, the focal distance L of imaging lens 2 is transparent parallel
On 1 center line 10 of cavity, the Depth of field D of imaging lens 2 is the width of parallel cavity 1, negative pressure generation unit 9 with will contain
The gas of PM2.5 particulate matters 8, which introduces in parallel cavity 1, forms detection air duct 7, and 3 image-forming information of cmos image sensor passes through place
It manages device 4 to handle, includes on LCD display 5 by the imaging of PM2.5 particulate matters 8 of different sizes and shapes.
The Depth of field D=preceding the depth of field of the rear depth of field-, wherein the preceding depth of field=D δ L2/f2+ D δ L, the rear depth of field=D δ L2Before/
f2- D δ L, D are the shooting f-numbers of camera lens, and L is focal distance, and δ is that allow disperse circular diameter f be lens focus.Described is flat
An actor's rendering of an operatic tune road 1 is the transparent body.
The processor includes at least a control, and control is used for by the PM2.5 particulate matters 8 of different sizes and shapes
The calibration object of reference correction size of establishing criteria provides detected size.
The width of the parallel cavity 1 is not counted according to the minimum depth of field of imaging lens 2, the minimum depth of field of imaging lens 2
It is the depth of field of maximum ring, so that the high-frequency information of PM2.5 particulate matters 8 is imaged on cmos image sensor 3.
Claims (8)
1. a kind of device design method of detectable PM2.5 size and shapes, it is characterized in that：It includes at least：Parallel cavity（1）、
Processor（4）, LCD display（5）, parallel cavity（1）The negative pressure generation unit of side（9）, with parallel cavity（1）It is vertical at
As camera lens（2）And imaging lens（2）The cmos image sensor of imaging surface（3）, imaging lens（2）Focal distance L transparent
Parallel cavity（1）Center line（10）On, imaging lens（2）Depth of field D be parallel cavity（1）Width, negative pressure generates single
Member（9）With with will contain PM2.5 particulate matters（8）Gas introduce parallel cavity（1）Interior formation detects air duct（7）, cmos image
Sensor（3）Image-forming information passes through processor（4）Processing, by the PM2.5 particulate matters of different sizes and shapes（8）Imaging is shown in
LCD display（5）On.
2. a kind of device design method of detectable PM2.5 size and shapes according to claim 1, it is characterized in that：Institute
The Depth of field D the stated=preceding depth of field of the rear depth of field-, wherein before before the depth of field=D δ L2/f2+ D δ L, the rear depth of field=D δ L2/f2-D δ L, D be
The shooting f-number of camera lens, L are focal distances, and δ is that allow disperse circular diameter f be lens focus.
3. a kind of device design method of detectable PM2.5 size and shapes according to claim 1, it is characterized in that：Institute
The parallel cavity stated（1）For the transparent body.
4. a kind of device design method of detectable PM2.5 size and shapes according to claim 3, it is characterized in that：Institute
The parallel cavity of the transparent body stated has lighting source at image side（6）.
5. a kind of device design method of detectable PM2.5 size and shapes according to claim 4, it is characterized in that：Institute
The lighting source stated（6）It is irradiated to the adjustable angle of the parallel cavity of the transparent body.
6. a kind of device design method of detectable PM2.5 size and shapes according to claim 4, it is characterized in that：Institute
The lighting source stated（6）Brightness is adjustable.
7. a kind of device design method of detectable PM2.5 size and shapes according to claim 1, it is characterized in that：Institute
The processor stated（4）Including at least a control, control is used for by the PM2.5 particulate matters of different sizes and shapes（8）Foundation
The calibration object of reference correction size of standard provides detected size.
8. a kind of device design method of detectable PM2.5 size and shapes according to claim 1, it is characterized in that：Institute
The parallel cavity stated（1）Width imaging lens（2）The minimum depth of field design so that PM2.5 particulate matters（8）High-frequency information at
As in cmos image sensor（3）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430864.7A CN108593504A (en) | 2017-12-26 | 2017-12-26 | A kind of device design method of detectable PM2.5 size and shapes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711430864.7A CN108593504A (en) | 2017-12-26 | 2017-12-26 | A kind of device design method of detectable PM2.5 size and shapes |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0507746A2 (en) * | 1991-04-03 | 1992-10-07 | Istituto Nazionale Di Ottica | Method and device for measuring the particle size distribution of a flowing solid particulate substance |
| CN103424406A (en) * | 2013-09-03 | 2013-12-04 | 上海理工大学 | Image method measuring device and method for gas-liquid two-phase flow in pipelines |
| CN103575626A (en) * | 2013-10-29 | 2014-02-12 | 中国人民解放军第四军医大学 | Particulate matter (PM) 2.5 detection device based on wide-angle Fourier transformation |
| CN103868833A (en) * | 2012-12-13 | 2014-06-18 | 张艳丽 | Particulate matter-containing air shooting quantization assessment method and apparatus |
| 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 |
| CN104718444A (en) * | 2012-10-15 | 2015-06-17 | 索尼公司 | Microparticle measuring device |
| CN105651656A (en) * | 2016-04-01 | 2016-06-08 | 黄恺 | Particle shape analyzing device based on laser holography imaging method and working mechanism of particle shape analyzing device |
| CN106153509A (en) * | 2015-03-23 | 2016-11-23 | 曹军 | Laser imaging air particle content detector |
| CN106461526A (en) * | 2014-03-04 | 2017-02-22 | 雷特希技术股份有限公司 | Device for determining the particle size and/or the particle shape of a particle mixture |
-
2017
- 2017-12-26 CN CN201711430864.7A patent/CN108593504A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0507746A2 (en) * | 1991-04-03 | 1992-10-07 | Istituto Nazionale Di Ottica | Method and device for measuring the particle size distribution of a flowing solid particulate substance |
| CN104718444A (en) * | 2012-10-15 | 2015-06-17 | 索尼公司 | Microparticle measuring device |
| CN103868833A (en) * | 2012-12-13 | 2014-06-18 | 张艳丽 | Particulate matter-containing air shooting quantization assessment method and apparatus |
| CN103424406A (en) * | 2013-09-03 | 2013-12-04 | 上海理工大学 | Image method measuring device and method for gas-liquid two-phase flow in pipelines |
| CN103575626A (en) * | 2013-10-29 | 2014-02-12 | 中国人民解放军第四军医大学 | Particulate matter (PM) 2.5 detection device based on wide-angle Fourier transformation |
| CN106461526A (en) * | 2014-03-04 | 2017-02-22 | 雷特希技术股份有限公司 | Device for determining the particle size and/or the particle shape of a particle mixture |
| 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 |
| CN106153509A (en) * | 2015-03-23 | 2016-11-23 | 曹军 | Laser imaging air particle content detector |
| CN105651656A (en) * | 2016-04-01 | 2016-06-08 | 黄恺 | Particle shape analyzing device based on laser holography imaging method and working mechanism of particle shape analyzing device |
Non-Patent Citations (1)
| Title |
|---|
| 王红理等: "《综合与近代物理实验》", 31 August 2015, 西安交通大学出版社 * |
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Application publication date: 20180928 |