EP4078155A1 - System for measuring dimensions of food particles and associated method - Google Patents
System for measuring dimensions of food particles and associated methodInfo
- Publication number
- EP4078155A1 EP4078155A1 EP20845783.8A EP20845783A EP4078155A1 EP 4078155 A1 EP4078155 A1 EP 4078155A1 EP 20845783 A EP20845783 A EP 20845783A EP 4078155 A1 EP4078155 A1 EP 4078155A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- granules
- wedge
- parts
- support
- angle
- Prior art date
- 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.)
- Withdrawn
Links
- 235000013305 food Nutrition 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 15
- 239000002245 particle Substances 0.000 title description 5
- 239000008188 pellet Substances 0.000 claims abstract description 12
- 230000003100 immobilizing effect Effects 0.000 claims abstract description 7
- 239000008187 granular material Substances 0.000 claims description 103
- 229910000746 Structural steel Inorganic materials 0.000 claims description 19
- 238000003384 imaging method Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 5
- 230000000284 resting effect Effects 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009747 swallowing Effects 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
-
- 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
-
- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning
-
- 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
-
- 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
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N15/1429—Signal processing
- G01N15/1433—Signal processing using image recognition
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
-
- 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
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N15/1434—Optical arrangements
- G01N2015/144—Imaging characterised by its optical setup
- G01N2015/1445—Three-dimensional imaging, imaging in different image planes, e.g. under different angles or at different depths, e.g. by a relative motion of sample and detector, for instance by tomography
Definitions
- TITLE SYSTEM FOR MEASURING DIMENSIONS OF FOOD PARTICLES AND RELATED METHOD FIELD OF THE INVENTION
- the present invention relates to food, and more particularly to the field of controlling the manufacture of food particles. It relates in particular to a method and a device for measuring the dimensions of granules.
- Food granules for example for animal feed, are particles which include food materials, for example compacted and / or dehydrated.
- the granules have the advantage of being less dusty than powder or flour.
- the volume of the granules is of particular importance: if a granule has too high a volume, an animal may have difficulty swallowing it. On the other hand, if the pellet is too small in volume, the animal may tend to ingest less food. Thus, when producing granules, there is a need to accurately control the three-dimensional size and / or volume of the granules.
- a granule can have a regular geometric shape, such as a cylinder or a sphere. Thus, measuring one or two characteristic lengths of the granule can be used to calculate its total volume. It is known practice to measure the diameter and length of each of the granules of a sample of granules using a caliper. This is a long and tedious operation: for example, it can take more than 15 minutes for an experienced controller when measuring a sample of 50 pellets.
- document FR3049374 B1 describes a method for measuring the size and volume of granules by acquiring a digital image of a sample of granules, as well as digital processing making it possible to determine the diameter and where the length of each of the pellets.
- Each granule is assimilated to a sphere or a spheroid when estimating its volume.
- the granules 2 of the prior art may have complex shapes such as hearts or irregular shapes.
- the granule 2 has, for example, the shape of a dog bone.
- the three-dimensional size of this shape can be approximated by measuring the length L, the width W and the thickness t of the pellet. A measurement of the volume of such granules is not possible, or else imprecise using known measurement methods.
- An aim of the invention is to provide a solution for measuring the volume of food particles, preferably granules, having complex shapes with precision.
- an angle iron comprising two flat parts linked together integrally and forming an elongated fold between the two parts
- the system for maintaining the granules comprises a flat wedge and means for fixing the wedge to the angle iron, the fixing means being arranged so as to leave a clearance between the wedge and at least one of the two flat parts when the wedge is attached to the angle iron, - the wedge is made of an opaque material,
- the cleat is made of a blue material
- the retaining system is configured so that the wedge has a face facing one of the parts when the wedge is fixed to the angle iron, and in which a material of the wedge forming the face has a Young's modulus of less than 1 GPa,
- the retaining system comprises a square of a shape complementary to that of the angle iron.
- Another aspect of the invention is a three-dimensional size measurement system of pellets for food, comprising:
- Another aspect of the invention is a three-dimensional size measurement system of pellets for food, comprising:
- At least one device configured to immobilize a plurality of granules on the support, and according to a plurality of different positions for each of the granules.
- the measuring system comprises a scanner, the scanner comprising the imaging system and the transparent flat support.
- Another aspect of the invention is a method for measuring the three-dimensional size of granules for food, comprising the following steps: a) acquisition of a first digital image of the granules immobilized facing a flat support, b) rotation of each of the granules by an angle of between 70 ° and 110 °, then immobilization of the granules at this angle facing the support, c) acquisition of a second digital image of the granules following step b).
- step b) is carried out by immobilizing the granules in at least one device for holding the granules in accordance with the invention.
- FIG. 1 - Figure 1 illustrates granules of the prior art having complex shapes
- FIG. 2 illustrates a granule of the prior art having a bone shape
- FIG. 3 schematically illustrates a granule holding device according to one embodiment of the invention
- FIG. 4 schematically illustrates a granule holding device according to one embodiment of the invention
- FIG. 5 schematically illustrates a granule holding device according to an embodiment of the invention comprising a wedge in the form of a square
- FIG. 6 schematically illustrates a three-dimensional granule size measurement system according to one embodiment of the invention
- FIG. 7 schematically illustrates a method of measuring the three-dimensional size of granules according to one embodiment of the invention
- FIG. 8 is a photograph of granules acquired by a measuring system according to the invention
- FIG. 9 is a photograph of granules acquired by a measuring system according to the invention.
- a device 1 for holding granules 2 for food comprises an angle 3, the angle 3 comprising two parts 3a, 3b flat.
- the two flat parts 3a, 3b are linked together in an integral manner, forming an elongated fold 4 between the two parts 3a, 3b.
- the fold 4 can be inside the apex at an angle of 90 ° formed between part 3a and the other part 3b.
- the device 1 also comprises a system 5 for maintaining the granules 2, suitable for immobilizing one or more granules 2 against each of the two parts 3a, 3b, in the fold 4.
- immobilized is understood to mean that the granules 2 are stable in a given position.
- the granules can for example be immobilized by gravity by resting against one or both parts 3a, 3b of the angle 3.
- the planar parts 3a, 3b are at least in part, and preferably entirely optically transparent.
- transparent is meant that it is possible to discern an object immobilized in the angle iron 3 from the outside of the angle iron 3. It is understood more particularly that the angle iron 3, by virtue of its material and its geometry, absorbs less energy. 50% of the energy of light waves in the visible domain, preferably without changing their wavelength.
- the angle iron 3 can for example be made of transparent plastic, such as
- the system 5 for maintaining the granules 2 can preferably comprise a flat wedge 6, and means 7 for fixing the wedge 6 to the angle 3.
- the fixing means 7 are arranged so as to leave a clearance between the wedge 6 and at least one of the two parts 3a, 3b when the wedge 6 is fixed to the angle 3.
- the game between the wedge 6 and the angle 3 has a length less than one centimeter, and preferably less than 5 mm.
- the fixing means 7 can comprise screw systems and nuts, the wedge 6 and / or the angle 3 having openings adapted to said fixing by screws and nuts.
- the fixing means 7 can alternatively comprise clips, or any other removable fixing means.
- the wedge 6, and more generally the holding system 5 can be made of an opaque material.
- opaque we mean that the material absorbs more than 90% of the transmitted light energy.
- the wedge 6, and / or the holding system 5, form an opaque bottom when imaging the granules 2 through one of the transparent parts 3a, 3b of the angle 3.
- the wedge 6 is preferably made of a blue material.
- Blue means blue according to the AFNOR X08-010 standard, that is to say emitting or reflecting light waves having a wavelength of between 466 nm and 490 nm.
- the holding system 5 can be configured so that, when fixing the wedge 6 to the angle iron 3, the wedge 6 has a face facing one of the parts 3a, 3b, and that the material forming this face has a Young's modulus less than 1 GPa, and preferably less than 10 MPa.
- the face of the wedge 6 can be deformed on contact with the granules 2, and avoid damaging the granules 2 when fixing the wedge 6.
- the holding system 5 can also include a square 8, the shape of the square 8 being complementary to that of the angle 3. A part plane of the square 8 then forms the wedge 6. The other part of the square can serve as an opaque bottom when imaging the granules 2 immobilized in the device 1.
- the square 8 can be fixed to the angle iron 3 in two configurations. In a first configuration, the square 8 is fixed to the angle 3 so that one of the faces of the square 8 is a wedge 6 for the holding system 5.
- FIG. 6 another aspect of the invention is a three-dimensional size measuring system 9 of pellets for food.
- the measuring system 9 comprises a transparent planar support 10, intended to support the holding device 1 according to the invention.
- the measuring system 9 also comprises at least one device 1 according to the invention, arranged on the transparent flat support 10, on one of its parts 3a or 3b.
- the measuring system 9 can comprise, instead of the device 1, a device configured to immobilize a plurality of granules 2 on the support 10 and according to a plurality of different positions for each of the granules 2.
- the system of measurement 9 comprises an imaging system 11 suitable for imaging an object in contact with the support 10, and preferably through the support 10.
- the imaging system 11 can preferably be placed on the side opposite to the object to be imaged, for example relative to the support 10. Thus, it is possible to image all of the granules 2 from different angles, by changing the part 3a or 3b on which the device 1 rests on the support 10. Alternatively, the imaging system and the object to be imaged can be placed on the same side of the support 10.
- the measuring system 9 is preferably a portable system.
- a portable means a system that can be carried by hand by a user.
- the measuring system 9 preferably comprises an enclosure, for example in the form of a suitcase, the enclosure comprising the support 10, the imaging system 11 and the device 1 for holding the granules 2.
- the enclosure preferably has interior faces matt and dark, preferably black, so as to avoid imaging reflections when measuring the three-dimensional size of the granules 2.
- the measuring system 9 preferably comprises a scanner, the scanner comprising both the imaging system 11 and the transparent flat support 10.
- scanner is meant a device comprising a transparent flat support 10, and a linear image sensor, for example of the CCD or CIS type, arranged under the flat support 10, and motorized so as to scan the surface of a part. of the support 10, making it possible to image an object placed on the other side of the support 10.
- another aspect of the invention is a method of measuring the three-dimensional size of granules 2 for food.
- the method comprises a first step 701 of acquiring a first digital image of the granules 2 immobilized facing the flat support. It is for example possible to image between 10 and 200 granules, preferably between 50 and 100 granules 2.
- the method comprises a second subsequent step 702 of rotating each of the granules 2 by an angle of between 70 ° and 110 °, then immobilization of the granules 2 at this angle facing the support 10.
- the rotation of each of the granules can be carried out along an axis of rotation different from an axis perpendicular to the support 10.
- the method comprises a third subsequent step 703 of acquiring a digital image of the granules 2.
- the method preferably comprises a step subsequent to the third step 703 of calculating and / or approximating three different dimensions of each granule 2 from the first digital image and from the second digital image. For example, we can calculate the length L, the width W and the height h of each pellet 2.
- the second step 702 is implemented by immobilizing the granules 2 in at least one device 1 in accordance with the invention.
- the granules 2 can be deposited on the angle iron 3.
- the first step 701 can be implemented by acquiring a first digital image of the granules 2 thus deposited.
- the bracket 8 can be fixed to the angle iron 3 during the first step 701, in a configuration in which the wedge 6 is not in contact with the granules 2 and in which another part of the bracket 8 is a matt background during the acquisition of the first digital image of the granules 2.
- FIG. 8 illustrates an example of a first digital image in which three granules are photographed.
- the second step 702 can be implemented by bringing the wedge 6 closer so as to raise the granules in the fold 6, and thus cause a rotation of each of the granules 2 by an angle of approximately equal to 90 °.
- the granules 2 are thus immobilized at this angle by fixing the wedge 6 of the square 8 to the angle iron 3.
- a second digital image of the granules 2 is acquired which is still held by the shim 6.
- FIG. 9 illustrates an example of a second digital image of the same three granules 2 illustrated in FIG. 8.
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Textile Engineering (AREA)
- Signal Processing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Feeding Of Articles To Conveyors (AREA)
- Computer Vision & Pattern Recognition (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1914949A FR3105531B1 (en) | 2019-12-19 | 2019-12-19 | FOOD PARTICLE SIZE MEASUREMENT SYSTEM AND ASSOCIATED METHOD |
PCT/FR2020/052504 WO2021123642A1 (en) | 2019-12-19 | 2020-12-17 | System for measuring dimensions of food particles and associated method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4078155A1 true EP4078155A1 (en) | 2022-10-26 |
Family
ID=72088163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20845783.8A Withdrawn EP4078155A1 (en) | 2019-12-19 | 2020-12-17 | System for measuring dimensions of food particles and associated method |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230039747A1 (en) |
EP (1) | EP4078155A1 (en) |
BR (1) | BR112022012108A2 (en) |
CA (1) | CA3165270A1 (en) |
FR (1) | FR3105531B1 (en) |
MX (1) | MX2022007770A (en) |
WO (1) | WO2021123642A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2194534A1 (en) * | 1997-01-07 | 1998-07-07 | Maztech Microvision Ltd. | Method and apparatus for quantifying particle components |
US7184575B2 (en) * | 2002-08-09 | 2007-02-27 | Weiss Enterprises Inc. | Seed tray for digital image analysis of grain and the like |
US9587938B2 (en) * | 2003-06-17 | 2017-03-07 | Troxler Electronic Laboratories, Inc. | Method and apparatus for determining a characteristic of a construction material |
NO327576B1 (en) * | 2006-06-01 | 2009-08-17 | Ana Tec As | Method and apparatus for analyzing objects |
US8526075B2 (en) * | 2008-10-09 | 2013-09-03 | Satake Corporation | Tray for image reading device |
FR3049374B1 (en) | 2016-03-22 | 2018-07-27 | Invivo Nsa | METHOD AND DEVICE FOR MEASURING THE SIZE OF PELLETS |
-
2019
- 2019-12-19 FR FR1914949A patent/FR3105531B1/en not_active Expired - Fee Related
-
2020
- 2020-12-17 BR BR112022012108A patent/BR112022012108A2/en not_active IP Right Cessation
- 2020-12-17 EP EP20845783.8A patent/EP4078155A1/en not_active Withdrawn
- 2020-12-17 WO PCT/FR2020/052504 patent/WO2021123642A1/en unknown
- 2020-12-17 US US17/786,950 patent/US20230039747A1/en active Pending
- 2020-12-17 CA CA3165270A patent/CA3165270A1/en active Pending
- 2020-12-17 MX MX2022007770A patent/MX2022007770A/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021123642A1 (en) | 2021-06-24 |
BR112022012108A2 (en) | 2022-12-06 |
US20230039747A1 (en) | 2023-02-09 |
CA3165270A1 (en) | 2021-06-24 |
FR3105531B1 (en) | 2021-12-31 |
MX2022007770A (en) | 2022-09-27 |
FR3105531A1 (en) | 2021-06-25 |
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