WO2013160877A1 - Sensor e metodo para medida de turvacão - Google Patents
Sensor e metodo para medida de turvacão Download PDFInfo
- Publication number
- WO2013160877A1 WO2013160877A1 PCT/IB2013/053308 IB2013053308W WO2013160877A1 WO 2013160877 A1 WO2013160877 A1 WO 2013160877A1 IB 2013053308 W IB2013053308 W IB 2013053308W WO 2013160877 A1 WO2013160877 A1 WO 2013160877A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- emitter
- measuring
- wavelengths
- sensor
- receiver
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 13
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 239000006185 dispersion Substances 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000001033 granulometry Methods 0.000 claims 2
- 238000004364 calculation method Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 20
- 239000000835 fiber Substances 0.000 abstract description 8
- 239000013049 sediment Substances 0.000 abstract description 4
- 238000004848 nephelometry Methods 0.000 abstract 1
- 230000004044 response Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000012937 correction Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011005 laboratory method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004164 analytical calibration Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003920 environmental process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 241000238565 lobster Species 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
- G01N21/532—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke with measurement of scattering and transmission
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/066—Modifiable path; multiple paths in one sample
- G01N2201/0668—Multiple paths; optimisable path length
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/08—Optical fibres; light guides
Definitions
- REPLACEMENT SHEET (RULE 26)
- the emitter (1) comprises an emitting optical fiber.
- angles A1 and A2 being 180 ° and 90 °, respectively, within a tolerance of 45 °, in particular 30 °, more particularly 15 °.
- One embodiment has the characteristic that the number of wavelengths (Cl, C2, C3) are as many as needed for the number of quantities to be determined.
- the quantities to be determined comprise one or more of: turbidity, suspended solids concentration, particle size, surface morphology, particle shape and material type.
- the present invention further describes a turbidity measurement method comprising the steps of:
- the transmitter (1) and transmission metering receiver (2) are at a predefined angle (Al) and a predefined distance (LI)
- the transmitter (1) and transmitter metering receiver (3) are at a predefined angle (A2) and at a predefined distance (L3) projected on the beam emitted by the transmitter (1)
- the dispersion measurement receiver (3) is at a distance (L2) of the beam emitted by the transmitter (1).
- One embodiment has the feature of pre-calculating predefined distances and angles as a function of the desired ranges and resolution of measurement.
- One embodiment has the characteristic that the number of wavelengths used is a function of the number of quantities to be determined.
- One embodiment is characterized in that it comprises the prior step of receiving at receivers (2, 3) without emitting at emitter (1) in order to measure ambient light present at said light wavelengths (Cl, C2, C3), and for comprising the further step of discounting the thus measured value of ambient light into the transmission and scattering values.
- the present invention further describes a computer readable medium incorporating said computer program.
- USP 7392813 (July 1, 2008) relates to a turbidity sensor that measures the concentration of suspended solids for use in dishwashers or washing machines where control of the Water consumption.
- USP 7659980, 7142299, 7397564, 6842243 and 5828458 relate to turbidity sensors which, differing in their housings, structure, mounting configuration and support parts, quantify concentration of suspended solids in fluid by optical transmission or dispersion. These devices do not have any discriminatory application.
- the present invention relates to a portable turbidity sensor in transmission and dispersion using two or more fiber optic wavelengths.
- the invention is built on optical principles of light transmission and scattering in a fluid medium, particularly liquid or gaseous, making use of two or more emission wavelengths and advanced data processing.
- the invention is a portable multi-function solution, which functions are commonly dispersed in various equipment from particle size spectrometers, current turbidity sensors that evaluate particle concentration and time-consuming laboratory techniques that determine particle size. the mass value of the particles.
- the invention allows, upon adjustment of intrinsic parameters, to be used in a wide range of quantities to be measured, with possible uses in public water supply, water quality, environmental factor studies, rainwater as well as industrial processes. The advantages of this equipment are described below.
- Figure 1 shows the configuration of a cell, with dimensions in the order of centimeters. With small dimensions (in the order of centimeters), the use of low dimensionality components and low energy consumption combined Fiber-optic data transport enables portability and versatility to adapt to outdoor (field) measurements.
- the invention is a multiparameter sensor that allows the improvement of sensory characteristics. It has two optical components, one transmission and one dispersion, present in figure 1 (2) and (3) respectively. Both components are determined using two or more wavelengths from which differentiated information is obtained.
- the measuring cell allows the adjustment of distances LI, L2 and L3 of figure 1 to ensure flexibility of adaptation to the real conditions.
- the use of various wavelengths and an advanced data collection and analysis algorithm enables the invention to perform functions not present in the previously described turbidity sensors, namely the centralization of functions of other devices.
- the information obtained by the invention allows it to perform functions present in spectrometers and laboratory techniques, such as the determination of the mass concentration and suspended solid type, particle size class, shape, surface morphology and partial concentrations.
- the invention is based on optical fiber for sending and collecting the optical signal. It needs a mechanical support and an electronic component for signal control, emission and reception.
- the parts are aggregated in one piece, allowing the replacement, repair and maintenance of the parts separately, which brings economic advantages. Description of the measurement method
- Dispersion is governed by the following empirical relationship:
- the emission fiber radiates a beam that is distributed in space in the form of a cone, the irradiance is distributed over an area that increases with the square of the radius, that is, it is a Lambertian source. This phenomenon limits the maximum optical path for which the power collected in the front fiber is sufficient to make the measurement.
- the geometric parameters introduced in figure 1 fluctuate as a function of spectral range (IR-UV), irradiance (microwatt to watt per square millimeter) and coherence (LED or LASER) of the light source, density and type of fluid used (gas or liquid). ), concentration range (microgram to tens of grams per liter), mean diameter (micrometer to millimeter), shape (spherical to flat) and surface condition (smooth or grooved) of the particles under study.
- spectral range IR-UV
- irradiance microwatt to watt per square millimeter
- LED or LASER coherence
- concentration range microgram to tens of grams per liter
- mean diameter micrometer to millimeter
- shape shape
- surface condition smooth or grooved
- the invention features an advanced method of analysis of results dependent upon prior calibration.
- THE Calibration defines the response to the solutions to be measured.
- the data metering and storage process carried out by the electronic component is shown in Figure 4. For two or more wavelengths, a zero exposure record is made and a next one with a corresponding wavelength exposure is recorded. correction of the signal measured at ambient light and sequentially the above process continues for the remaining wavelengths to operate.
- the response of the transmission component with increasing concentration is an exponential decay of the optical signal.
- the various exponentials (Cl), (C2) and (C3) of Figure 2 correspond to the response obtained for different wavelengths.
- the dispersion component response with increasing concentration is given in Figure 3, it is a curve composed of four main regions. For low concentrations there is an exponential increase zone, followed by a linear increase until a concavity inversion from which there is an exponential decay. Each of these regions represents concentration ranges whose applications are different.
- the fit curves are dependent on the factors of size, shape, surface morphology and type of particle material suspended in the fluid. Exemplified in figure 2 for transmission and figure 3 for dispersion.
- the optical intensity three-dimensionally as a function of two of the four factors mentioned. Knowing, a priori, one or more factors, in a single measure the estimate of all the factors mentioned above is determined.
- the above process provides the information necessary for a complete characterization of suspended solids.
- Each incident light wavelength has an optical response dependent on the factors previously introduced. Charting the dependency factor calibration curves, the various wavelengths present similar curves and are ordered in intensity according to each parameter. The order of responses allows to define distinct calibrations that characterize the particles present in the fluid.
- One embodiment comprises an advanced multiparameter portable turbidity sensor characterized by one or more measuring cells, each consisting of an emitting fiber with one or no diverging lens, a receiving fiber with a photodetector transmitting with one or no converging lens, a receiving fiber with a scattering photodetector with one or no converging lens, where the lenses make it possible to expand the light beam to increase the volume of sample to be analyzed.
- One embodiment comprises an advanced multiparameter portable turbidity sensor characterized in that it is constructed in a measuring cell operating at two or more monochrome wavelengths alternately in time or consisting of two or more measuring cells with two or more monochrome wavelengths operating simultaneously at one another. time in each cell operates with single monochrome constant wavelength in time.
- One embodiment comprises an advanced multiparameter portable turbidity sensor characterized by quantifying transmission and dispersion of two or more monochrome emission wavelengths and relating the optical response of each monochrome wavelength to turbidity, suspended solids concentration, particle size, surface morphology, particle shape and material type.
- One embodiment comprises an advanced multiparameter portable turbidity sensor characterized by a data analysis system that receives, organizes, calculates, stores and numerically and graphically presents results consistent with the use of two or more monochromatic wavelengths in the transmission and dispersion components. allowing rapid comparison with a database of previous calibrations.
- Figure 1 Spatial representation of the measuring cell
- (1) represents emitter of two or more light wavelengths
- (2) represents a receiver of two or more light wavelengths emitted by the emitter for transmission measurement
- (3) represents a receiver of two or more light wavelengths emitted by the emitter for the measurement of scatter
- (L2) represents the distance between receiver for scattering and the beam emitted by the emitter
- (L3) represents the distance between transmitter and receiver for projected scatter in the beam emitted by the transmitter
- (A2) represents the angle between sender and receiver for dispersion.
- Figure 2 Schematic representation of the typical transmitted light intensity response as a function of suspended solids concentration where (Cl), (C2) and (C3) represent wavelengths.
- Figure 3 Schematic representation of the typical scattered light intensity response as a function of suspended solids concentration where (Cl), (C2) and (C3) represent wavelengths.
- Figure 4 Schematic representation of data acquisition for each wavelength to be used
- Wavelength 1 represents the emission and reception of the first wavelength
- (Correction 1) represents the correction of ambient light for the first wavelength
- (Correction n) represents the correction of ambient light for wavelength n
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112014026752A BR112014026752A2 (pt) | 2012-04-26 | 2013-04-26 | sensor e método para medida de turvação |
US14/397,426 US20150116709A1 (en) | 2012-04-26 | 2013-04-26 | Sensor and method for turbidity measurement |
EP13733044.5A EP2843394A1 (en) | 2012-04-26 | 2013-04-26 | Turbidity measuring sensor and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT106279 | 2012-04-26 | ||
PT106279A PT106279A (pt) | 2012-04-26 | 2012-04-26 | Sensor e método para medida de turvação |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013160877A1 true WO2013160877A1 (pt) | 2013-10-31 |
Family
ID=48741424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2013/053308 WO2013160877A1 (pt) | 2012-04-26 | 2013-04-26 | Sensor e metodo para medida de turvacão |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150116709A1 (pt) |
EP (1) | EP2843394A1 (pt) |
BR (1) | BR112014026752A2 (pt) |
PT (1) | PT106279A (pt) |
WO (1) | WO2013160877A1 (pt) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104568845B (zh) * | 2015-01-10 | 2017-02-22 | 浙江大学 | 水下全角度浊度测量设备与测量方法 |
EP3165902A1 (en) | 2015-11-09 | 2017-05-10 | ABB Schweiz AG | A method and a sensor for measuring suspended solids in a liquid |
CN109883997B (zh) * | 2019-02-01 | 2020-07-03 | 中国海洋大学 | 一种高精度智能浊度检测装置及其标定方法和使用方法 |
CN110231311B (zh) * | 2019-05-28 | 2023-12-01 | 中国地质大学(武汉) | 一种便携式光纤浊度检测装置 |
CN112804510B (zh) * | 2021-01-08 | 2022-06-03 | 海南省海洋与渔业科学院 | 深水图像的色彩还真处理方法、装置、存储介质及相机 |
DE102021115729A1 (de) * | 2021-06-17 | 2022-12-22 | Krones Aktiengesellschaft | Vorrichtung und Verfahren zum Inspizieren von befüllten Behältnissen und deren Füllgut |
Citations (13)
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US4290695A (en) * | 1979-09-28 | 1981-09-22 | Environmental Systems Corporation | Method and apparatus for measurement of transmittance and scatter of light in water |
DE19626203A1 (de) * | 1996-06-29 | 1998-01-02 | Aeg Hausgeraete Gmbh | Optischer Sensor |
US5828458A (en) | 1995-01-26 | 1998-10-27 | Nartron Corporation | Turbidity sensor |
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WO2006129054A2 (en) * | 2005-05-28 | 2006-12-07 | Schlumberger Technology B.V. | Devices and methods for quantification of liquids in gas-condensate wells |
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- 2013-04-26 WO PCT/IB2013/053308 patent/WO2013160877A1/pt active Application Filing
- 2013-04-26 BR BR112014026752A patent/BR112014026752A2/pt not_active IP Right Cessation
- 2013-04-26 US US14/397,426 patent/US20150116709A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
PT106279A (pt) | 2013-10-28 |
EP2843394A1 (en) | 2015-03-04 |
US20150116709A1 (en) | 2015-04-30 |
BR112014026752A2 (pt) | 2017-06-27 |
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