CN107860693A - A kind of liquid detecting instrument and liquid detecting method - Google Patents
A kind of liquid detecting instrument and liquid detecting method Download PDFInfo
- Publication number
- CN107860693A CN107860693A CN201711063496.7A CN201711063496A CN107860693A CN 107860693 A CN107860693 A CN 107860693A CN 201711063496 A CN201711063496 A CN 201711063496A CN 107860693 A CN107860693 A CN 107860693A
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- Prior art keywords
- liquid
- filming apparatus
- light source
- projection
- displacement structure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000013618 particulate matter Substances 0.000 claims abstract description 41
- 238000006073 displacement reaction Methods 0.000 claims abstract description 36
- 230000001678 irradiating effect Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 241000143437 Aciculosporium take Species 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
-
- 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, e.g. by light scattering, diffraction, holography or imaging
- G01N15/0227—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging using imaging, e.g. a projected image of suspension; using holography
-
- G01N15/075—
-
- 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
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0053—Investigating dispersion of solids in liquids, e.g. trouble
-
- 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
- G01N2015/0687—Investigating concentration of particle suspensions in solutions, e.g. non volatile residue
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a kind of liquid detecting instrument, including：For placing the displacement structure of liquid, the light source of liquid projection is formed for irradiating the liquid, and for shooting the filming apparatus of liquid projection；The displacement structure has translucency；The filming apparatus is oppositely arranged with light source, and the displacement structure is located between the filming apparatus and the light source.The invention further relates to a kind of liquid detecting method.The liquid detected by using light source to needs is irradiated; corresponding projection can be formed in the one side of displacement structure by the particle in the liquid of light source irradiation; then projection is taken pictures using filming apparatus; corresponding particle projection photo is can obtain, and then obtains the volume of each particulate matter in liquid.
Description
Technical field
The present invention relates to liquid detecting field, more particularly to a kind of liquid detecting instrument and liquid detecting method.
Background technology
The principle of pollutant and method mainly use light blockage method in measurement fluid at present, when the particulate in liquid is narrow by one
During small detection zone, vertical incident light is flowed to liquid, by being stopped by particulate matter, so that sensor output letter
Number change, this signal intensity is directly proportional to the sectional area of particulate, light blockage method check liquid in particulate matter be in accordance with this
Principle designs.Because its light transmittance is relatively low after oily pollution, in printing opacity detection there is particulate matter and during without particulate matter in order to reach
Light varience, some instruments have used LASER Light Source.Oil contamination severe is different, when light transmittance is different, its light varience
Also die down therewith, the luminosity for judging particulate matter shading is that prior demarcation is good, and due to polluting the change of severe, light transmittance can become
Change, the particulate matter diameter size of instrument detection, with light varience and change during calibration, cause error increasing.Because
The apparatus of this principle, all it is single hole slit printing opacity, when there is small diameter particles thing to continue through unthreaded hole, possible error detection
To the diameter of particulate matter.Cause the error of measurement larger.Also this detection means is when calculating volume particles, stereometer
At last by flow come what is converted, the stabilization of flow directly affects the volume of calculating, so cause the particulate count of relative volume
Deviation in amount.Because calculating the pollutant of certain volume amount, also wait for flowing through measurement chamber during measurement
Liquid volume, this needs the regular hour, has suffered measurement process, it is necessary to the time of 5-30 seconds, flow velocity of the tachometric survey to liquid
It is required that higher, if flow rate of liquid is slower, measuring the required time can be longer.
The content of the invention
For overcome the deficiencies in the prior art, an object of the present invention is to provide a kind of liquid detecting instrument.
The second object of the present invention is to provide a kind of liquid detecting method.
An object of the present invention adopts the following technical scheme that realization：
A kind of liquid detecting instrument, including：
For placing the displacement structure of liquid, the light source of liquid projection is formed for irradiating the liquid, and for clapping
Take the photograph the filming apparatus of liquid projection；
The displacement structure has translucency；
The filming apparatus is oppositely arranged with light source, the displacement structure located at the filming apparatus and the light source it
Between.
Further, the displacement structure includes two light transmission pieces being oppositely arranged, and two are not oppositely arranged and mutually not
The baffle plate of contact, described two light transmission pieces clamp described two baffle plates, and the space between described two baffle plates forms cavity；
The opening on the space both sides respectively constitutes entrance and the outlet of the cavity.
Further, the thickness of the cavity is 0.5-1mm.
Further, the material of the light transmission piece is quartz glass.
Further, the filming apparatus is black and white camera, or with undistorted, short focus and high magnification
Camera.
Further, the light source is the light source of emitting parallel light.
Further, the filming apparatus includes the first camera and second camera, the shooting of first camera
Angle between direction and the shooting direction of second camera is 45 °.
The second object of the present invention adopts the following technical scheme that realization：
A kind of liquid detecting method, using above-mentioned liquid detecting instrument, the detection method includes,
A. take liquid to be placed in displacement structure, obtain liquid volume V1；
B. the light source of the displacement structure side is opened, the light source irradiating liquids simultaneously form liquid projection, at this moment started
The filming apparatus of displacement structure opposite side, filming apparatus are shot to liquid projection, obtain the photo of liquid projection；
C. by the statistics of particulate matter quantity in the photo to liquid projection, obtain containing particulate matter described in volume V1 liquid
Quantity；
D. the pixel count Pn shared by each particulate matter in liquid is obtained by photo, passes through the picture of known filming apparatus
The multiplication factor A of prime P and filming apparatus, by (Pn*P)/A computing, obtain the volume of each particulate matter.
Further, the pixel count of the filming apparatus is 300,000, and the size of the pixel is 4um.
Further, in the step a, the liquid is the liquid of inactive state or the liquid of motion state.
Compared with prior art, the beneficial effect of the embodiment of the present invention is：
The liquid detected by using light source to needs is irradiated, and can placed by the particle in the liquid of light source irradiation
Corresponding projection is formed in the one side of structure, then projection is taken pictures using filming apparatus, you can obtain corresponding particle
Projection print, the pixel count Pn shared by each particulate matter in liquid is obtained by photo, passes through the picture of known filming apparatus
The multiplication factor A of prime P and filming apparatus, by (Pn*P)/A computing, obtain the volume of each particulate matter；
Because the liquid volume in displacement structure is fixed, by the quantity for judging particle projection in photo, you can sentence
Break and the quantity of relative volume (liquid volume in displacement structure) endoparticle thing, and then can derive in whole liquid to be detected
Particulate matter quantity.
The liquid placed in displacement structure can be static or flowing, such as by whole liquid to be detected
Liquid is while inject displacement structure, while discharging displacement structure, when liquid flows through displacement structure, the at this moment exposure of filming apparatus
Time is Microsecond grade, no matter liquid be flowing or it is static, clear photograph can be photographed.
Brief description of the drawings
Fig. 1 is a kind of explosive view of embodiment of the present invention.
Fig. 2 is the structural representation of displacement structure in a kind of embodiment of the present invention.
In figure：1 is housing, and 2 be filming apparatus, and 3 be light source, and 41 be light transmission piece, and 42 be light transmission piece, and 5 be cavity, and 51 are
Baffle plate, 52 be baffle plate, and 6 be entrance, and 7 be outlet, and 8 be picture shooting assembly.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further, it is necessary to which explanation is, not
Under the premise of afoul, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Refer to Fig. 1 and Fig. 2.
A kind of liquid detecting instrument of the present invention, in the present embodiment, detector includes housing 1, in addition to：
For placing the displacement structure of liquid, in the present embodiment, displacement structure includes two light transmission pieces being oppositely arranged
41 with light transmission piece 42, and two be oppositely arranged and non-touching baffle plate 51 and baffle plate 52, described two light transmission pieces clamp institutes
State two baffle plates, the space between described two baffle plates forms the cavity 5 for placing liquid, and the opening on space both sides is distinguished
The entrance 6 and outlet 7, the entrance for forming cavity are inlet and liquid outlet with exporting the injection and exclusion for liquid.
Wherein the thickness of cavity is 0.5-1mm, can so ensure liquid uniform drawout in cavity, and then make liquid
Particulate matter in body is separately distributed without producing coincidence, such as two particulate matters coincide together and can only photographed when causing to take pictures
One particulate matter, cause to judge the quantity and volume of the liquid particles thing in cavity by accident；And the thickness of such cavity
Appearing for light can be effectively ensured in degree, and the contaminated liquid of in general can pass through light.
In the present embodiment, the material of the light transmission piece is square quartz glass, and quartz glass has good printing opacity
Property, the translucency in measurement is had no effect, and quartz glass is easy to process, and required chi can be processed into according to design
Very little, the pressure size that thickness is born according to required for instrument use environment selects corresponding thickness.
Also include being used to irradiate the light source 3 that the liquid forms liquid projection, and for shooting the shooting of liquid projection
Device 2, filming apparatus 2 are placed in picture shooting assembly 8, and above-mentioned filming apparatus is oppositely arranged with light source, and above-mentioned displacement structure is set
Between the filming apparatus and the light source；In the present embodiment, the filming apparatus is black and white camera, or with without abnormal
The camera of change, short focus and high magnification, the clear pictures of particulate matter projection can be shot by black and white camera, can
With the gem-pure particulate matter projection told in photo, (particulate matter projection is black, and being projected as remaining liquid is white
Color)；By the camera with undistorted, short focus and high magnification, the undeformed photo of wide-angle can be shot, is passed through
High magnification, effectively amplification can be carried out to photo, the liquid that needs detect can be carried out exactly according to being actually needed
Shooting, and facilitate the later stage to find out particulate matter trickle in liquid.
Referring to Fig. 1, the principle of the lower present invention of description below：The liquid for taking needs to detect first is put into the chamber of displacement structure
In body, liquid can be static or flowing, such as by whole liquid to be detected liquid while knot is placed in injection
Structure, while discharge displacement structure, when liquid flows through displacement structure, at this moment the time for exposure of filming apparatus is Microsecond grade, nothing
By liquid be flowing or it is static, clear photograph can be photographed；
Then open light source to be irradiated displacement structure, light can pass through the quartz glass of one side and can permeate
Body, but particulate matter that will not be in permeate body, the projection of particulate matter can be formed on the quartz glass of another side, is then used
Filming apparatus is shot to the quartz glass for forming particulate matter projection, you can is obtained the photo of particulate matter projection, is passed through photo
The pixel count Pn shared by each particulate matter in liquid is obtained, passes through the pixel count P and filming apparatus of known filming apparatus
Multiplication factor A, by (Pn*P)/A computing, obtain the volume of each particulate matter；
Because the liquid volume in displacement structure is fixed, by the quantity for judging particle projection in photo, you can sentence
Break and the quantity of relative volume (liquid volume in displacement structure) endoparticle thing, and then can derive in whole liquid to be detected
Particulate matter quantity.
In another embodiment of the present invention, the filming apparatus includes the first camera and second camera, described
Angle between the shooting direction of first camera and the shooting direction of second camera is 45 °, using single light source, double shootings
Head, three-dimensional imaging is carried out, can more intuitively calculate that particulate matter volume is big-and-middle, reduce the calculation error come by particle overlap zone.Two
Individual report is taken pictures simultaneously as head, then two photos are matched by software, is entered three-dimensional imaging, can thus be done stereoscopic analysis
.Intuitively see the size of particulate matter.The identification that the camera of two fixed angles is taken pictures similar to human eye simultaneously, can be simultaneously
Photographed two faces of particulate matter.Because the setting angle of two cameras is relatively fixed, the high identical times magnification of degree position
Number, focal length etc. are completely the same, and the photo that two cameras photographed location of pixels of particulate matter in imaging is also identical, and Jie measures
Because the angle taken pictures is different, the size for the particle that two such camera calculates is the size in two faces of particle, i.e.,
The size of particulate matter can intuitively be seen.
The liquid detecting method of the lower present invention of description below：
Using above-mentioned liquid detecting instrument, the detection method includes,
A. take liquid to be placed in displacement structure, obtain liquid volume V1；
B. the light source of the displacement structure side is opened, the light source irradiating liquids simultaneously form liquid projection, at this moment started
The filming apparatus of displacement structure opposite side, filming apparatus are shot to liquid projection, obtain the photo of liquid projection；
C. by the statistics of particulate matter quantity in the photo to liquid projection, obtain containing particulate matter described in volume V1 liquid
Quantity；
D. the pixel count Pn shared by each particulate matter in liquid is obtained by photo, passes through the picture of known filming apparatus
The multiplication factor A of prime P and filming apparatus, by (Pn*P)/A computing, obtain the volume of each particulate matter.
Wherein, the pixel count of filming apparatus is 300,000, and the size of the pixel is 4um, can obtain one and easily differentiate
The photo of liquid endoparticle thing.
Wherein, in step a, liquid is the liquid of inactive state or the liquid of motion state.
Above-mentioned embodiment is only the preferred embodiment of the present invention, it is impossible to the scope of protection of the invention is limited with this,
The change and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed scope.
Claims (10)
- A kind of 1. liquid detecting instrument, it is characterised in that including：For placing the displacement structure of liquid, the light source of liquid projection is formed for irradiating the liquid, and for shooting liquid The filming apparatus of body projection；The displacement structure has translucency；The filming apparatus is oppositely arranged with light source, and the displacement structure is located between the filming apparatus and the light source.
- 2. a kind of liquid detecting instrument according to claim 1, it is characterised in that the displacement structure includes two and set relatively The light transmission piece put, and two be oppositely arranged and non-touching baffle plate, described two light transmission pieces clamp described two baffle plates, institute The space stated between two baffle plates forms cavity；The opening on the space both sides respectively constitutes entrance and the outlet of the cavity.
- 3. a kind of liquid detecting instrument according to claim 2, it is characterised in that the thickness of the cavity is 0.5-1mm.
- 4. a kind of liquid detecting instrument according to claim 2, it is characterised in that the material of the light transmission piece is quartzy glass Glass.
- A kind of 5. liquid detecting instrument according to claim 1, it is characterised in that the filming apparatus is black and white camera, Or the camera with undistorted, short focus and high magnification.
- 6. a kind of liquid detecting instrument according to claim 1, it is characterised in that the light source is the light of emitting parallel light Source.
- 7. a kind of liquid detecting instrument according to claim 1, it is characterised in that the filming apparatus includes the first camera With second camera, the angle between the shooting direction of first camera and the shooting direction of second camera is 45 °.
- 8. a kind of liquid detecting method, it is characterised in that use liquid detecting instrument as claimed in claim 1, the detection side Method includes,A. take liquid to be placed in displacement structure, obtain liquid volume V1；B. the light source of the displacement structure side is opened, the light source irradiating liquids simultaneously form liquid projection, at this moment start and place The filming apparatus of structure opposite side, filming apparatus are shot to liquid projection, obtain the photo of liquid projection；C. by the statistics of particulate matter quantity in the photo to liquid projection, the number containing particulate matter described in volume V1 liquid is obtained Amount；D. the pixel count Pn shared by each particulate matter in liquid is obtained by photo, passes through the pixel count of known filming apparatus P, and filming apparatus multiplication factor A, by (Pn*P)/A computing, obtain the volume of each particulate matter.
- 9. a kind of liquid detecting method according to claim 8, it is characterised in that the pixel count of the filming apparatus is 30 Ten thousand, the size of the pixel is 4um.
- 10. a kind of liquid detecting method according to claim 8, it is characterised in that in the step a, the liquid is The liquid of inactive state or the liquid of motion state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711063496.7A CN107860693A (en) | 2017-11-02 | 2017-11-02 | A kind of liquid detecting instrument and liquid detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711063496.7A CN107860693A (en) | 2017-11-02 | 2017-11-02 | A kind of liquid detecting instrument and liquid detecting method |
Publications (1)
| Publication Number | Publication Date |
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| CN107860693A true CN107860693A (en) | 2018-03-30 |
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ID=61699920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711063496.7A Pending CN107860693A (en) | 2017-11-02 | 2017-11-02 | A kind of liquid detecting instrument and liquid detecting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107860693A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108970537A (en) * | 2018-10-19 | 2018-12-11 | 武汉中道设备制造工程有限公司 | Pill dripping machine with on-line checking function |
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| CN102004067A (en) * | 2009-09-01 | 2011-04-06 | 杭州绿洁水务科技有限公司 | Detection system and method of particles in liquid |
| CN102216954A (en) * | 2008-01-18 | 2011-10-12 | 海默库伊公司 | Method and apparatus for analysis of particles in a liquid sample |
| CN105209594A (en) * | 2013-07-09 | 2015-12-30 | 东洋制罐集团控股株式会社 | Device for counting |
| CN206573438U (en) * | 2017-03-29 | 2017-10-20 | 河南省水产科学研究院 | Particles in liquid is counted automatically, IMAQ and configuration measurement mechanism |
| CN207600896U (en) * | 2017-11-02 | 2018-07-10 | 深圳市卓尔思科技有限公司 | A kind of liquid detecting instrument |
-
2017
- 2017-11-02 CN CN201711063496.7A patent/CN107860693A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6710879B1 (en) * | 1997-05-05 | 2004-03-23 | Chemometec A/S | Method and a system for determination of particles in a liquid sample |
| CN102216954A (en) * | 2008-01-18 | 2011-10-12 | 海默库伊公司 | Method and apparatus for analysis of particles in a liquid sample |
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| CN105209594A (en) * | 2013-07-09 | 2015-12-30 | 东洋制罐集团控股株式会社 | Device for counting |
| CN206573438U (en) * | 2017-03-29 | 2017-10-20 | 河南省水产科学研究院 | Particles in liquid is counted automatically, IMAQ and configuration measurement mechanism |
| CN207600896U (en) * | 2017-11-02 | 2018-07-10 | 深圳市卓尔思科技有限公司 | A kind of liquid detecting instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108970537A (en) * | 2018-10-19 | 2018-12-11 | 武汉中道设备制造工程有限公司 | Pill dripping machine with on-line checking function |
| CN108970537B (en) * | 2018-10-19 | 2024-04-05 | 武汉中道设备制造工程有限公司 | Pill dropping machine with on-line detection function |
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