EP4088111A1 - Dispositif électronique, procédé et programme d'ordinateur pour l'estimation olfactive d'un état d'un produit - Google Patents
Dispositif électronique, procédé et programme d'ordinateur pour l'estimation olfactive d'un état d'un produitInfo
- Publication number
- EP4088111A1 EP4088111A1 EP21704850.3A EP21704850A EP4088111A1 EP 4088111 A1 EP4088111 A1 EP 4088111A1 EP 21704850 A EP21704850 A EP 21704850A EP 4088111 A1 EP4088111 A1 EP 4088111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- product
- state
- olfactory sensors
- olfactory
- representative
- 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.)
- Pending
Links
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- 238000004590 computer program Methods 0.000 title claims description 10
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- 238000004891 communication Methods 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
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Classifications
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- 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
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
- G01N21/553—Attenuated total reflection and using surface plasmons
- G01N21/554—Attenuated total reflection and using surface plasmons detecting the surface plasmon resonance of nanostructured metals, e.g. localised surface plasmon resonance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
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- 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
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
- G01N21/553—Attenuated total reflection and using surface plasmons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0047—Organic compounds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0068—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a computer specifically programmed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/12—Meat; Fish
Definitions
- the present invention relates to an electronic device for estimating a state of a product capable of being transformed by emission of volatile organic compounds. It also relates to a method implemented by such a device and a corresponding computer program.
- the invention applies more particularly to an electronic device for estimating a state of a product capable of being transformed by emission of volatile organic compounds, comprising: several olfactory sensors designed to:
- This type of device can be envisaged for various applications of olfactory estimation of the state of a product capable of being transformed by emission of volatile organic compounds.
- the transformation of the product should be understood as being due to microbiological or enzymatic activity.
- the conceivable applications may further extend to the aerobic or anaerobic transformation of living organisms.
- the state of the product should be understood as a state of transformation of the product, that is to say for example of freshness, or vice versa of degradation, maturation, fermentation, etc., depending on the applications.
- Such a device is for example marketed by the company Aryballe Technologies under the name NeOse Pro (registered trademark) since 2018. It is more generally an odor identification device, generally called a "nose electronic ”, whose processor for processing the signals supplied by the olfactory sensors is capable of producing a digital signature, or recognition fingerprint, specific to each odor detected. Its operation is for example described in patent documents FR 3,063,543 A1 and FR 3,071,061 B1. In general, the number N is equal to the number of olfactory sensors.
- this device By training on different products and under different conditions, this device is potentially able to identify all odors, and in particular those which are characteristic of the freshness of a product such as a piece of dead animal flesh that can be consumed in a situation. degradation.
- An electronic device for estimating a state of a product capable of being transformed by emission of volatile organic compounds, comprising: several olfactory sensors designed for:
- a processor for processing the signals supplied by the olfactory sensors in order to obtain N> 1 component (s) of a signature representative of the state of the product; further comprising: a memory for storing a reference signature with N component (s) representative of an exposure of the olfactory sensors to a reference humid environment without the presence of the product; a calculator of a similarity value between the N component (s) of the signature representative of the state of the product and that (s) of the reference signature, designed to provide an index value of transformation of the product from the calculated similarity value.
- the invention takes advantage of an unexpected and surprising finding according to which the state of a product capable of being transformed by emission of volatile organic compounds is in fact determinable using the electronic device defined above. above by simple comparison with an exposure of its olfactory sensors to a reference humid environment.
- the similarity between the two compared signatures is indeed characteristic of the processing state of the product. The closer they are, the closer the product is to a reference state in which it does not emit any particular volatile organic compounds, especially the fresher it is. The more distant they are, the more the product is in a state of advanced transformation, in particular of advanced degradation. It follows from this observation that the learning that may be implemented to improve the functioning of the device is greatly simplified. It was also observed that the resulting estimates are more reliable. It should be noted that, depending on the applications envisaged, the transformation index can be understood as an index of freshness, or conversely of degradation, maturation, fermentation, etc.
- a method for estimating a state of a product capable of being transformed by emission of volatile organic compounds comprising the following steps: exposure of the olfactory sensors of an electronic device according to the invention to a reference humid environment without the presence of the product; processing of the signals supplied by the olfactory sensors when they are exposed to the reference humid environment in order to obtain N component (s) of a reference signature; exposure of olfactory sensors to ambient air when placed near the product; processing of the signals supplied by the olfactory sensors when they are placed near the product to obtain N component (s) of a signature representative of the state of the product; and calculation of a similarity value between the N component (s) of the signature representative of the state of the product and that (s) of the reference signature, for the supply of a transformation index value of the produced from the calculated similarity value.
- the exposure of the olfactory sensors to ambient air when they are placed near the product successively comprises: a referential phase of exposure of the olfactory sensors to a dry air environment without product; an analytical phase of exposure of the olfactory sensors to volatile organic compounds emitted by the product; a final phase, called desorption, of re-exposure of the olfactory sensors to the environment of dry air without product; and the processing of the signals supplied comprises, for each of N signal or signals obtained from the signals supplied by the olfactory sensors of the device, the calculation of a statistical value, representative of the signal considered in a predetermined time window, in as a component of the signature representative of the condition of the product.
- the processing of the signals supplied by the olfactory sensors when they are placed near the product comprises taking into account each of the N signal (s) or signals obtained in a predetermined time window of end of analytical phase.
- the processing of the signals supplied by the olfactory sensors when they are placed near the product comprises taking into account each of the N signal (s) or signals obtained in a predetermined time window of start of the desorption phase.
- a method for estimating the freshness of a product according to the invention may include a step of selecting, from among the olfactory sensors of the electronic device, a subset of sensors sensitive to the components. volatile nitrogen, nitro-nitrogen and / or sulfur.
- the similarity value is a distance value, for example an N-Euclidean distance, between signatures.
- a method for estimating a state of a product according to the invention may include a calibration step including a learning process carried out on several products of different degrees of transformation and known in advance for associating their respectively calculated similarity values with predetermined transformation index values.
- the processing of the signals comprises obtaining N signals or signals representative of the interactions between the volatile organic compounds emitted by the product and the olfactory sensors of the electronic device, this obtaining being obtained from one of the devices of the assembly consisting of a device for amplification by plasmon resonance; a Mach-Zehnder interferometric amplification device; and an amplification device using functionalized resonant membranes.
- a computer program is also provided which can be downloaded from a communication network and / or recorded on a medium readable by a computer and / or executable by a processor, comprising instructions for the execution of the processing and calculation steps. of a method for estimating a state of a product according to the invention, when said program is executed on a computer.
- Figure 1 schematically shows the general structure of an electronic device for estimating a state of a product, according to one embodiment of the invention
- Figure 2 illustrates a typical example of an image produced by the electronic device of Figure 1, on which the olfactory sensors of this device are visible,
- Figure 3 illustrates, in the form of a circular diagram, an example of an olfactory signature that can be calculated by the device of Figure 1,
- FIG. 4 illustrates the successive steps of a method for estimating a state of a product, according to one embodiment of the invention
- FIG. 5 illustrates, in the form of superimposed temporal diagrams, an example of reference reflectance signals obtainable by the device of FIG. 1, and
- Figure 6 illustrates, in the form of superimposed temporal diagrams, an example of reflectance signals obtainable by the device of Figure 1 for a product emitting olfactory components characteristic of a certain transformation .
- the electronic device 10 for identifying an odor, and more precisely for estimating a state of freshness of a product shown schematically in FIG. 1 comprises a chamber 12 intended to receive ambient air. To do this,
- suction device 14 designed to suck the air outside the chamber
- the device 10 comprises several olfactory sensors 18, for example about sixty, designed to interact with volatile organic compounds likely to be present in the ambient air of the chamber 102 when they are placed at proximity of a product in a situation of transformation, for example of degradation, by emission of these compounds, in particular when the suction device 14 is close to the product in question.
- Each olfactory sensor 18 is, for example, a biosensor designed to interact with the compounds of a particular family of compounds.
- each olfactory sensor 18 may comprise a molecule, such as a peptide, complementary to the compounds of the family associated with this olfactory sensor 18.
- the olfactory sensors 18 are designed to provide signals representative of the presence, in the ambient air of chamber 12, of volatile organic compounds with which they can interact.
- the imaging system 20 comprises a metal layer 22, for example gold, having a first face 24 giving into the chamber 12 in order to be in contact with the ambient air that it contains.
- the olfactory sensors 18 are fixed on this first face 24 at predefined positions.
- the sensors are arranged in a matrix on a positioning grid, that is to say that they are respectively located at the centers of cells of this grid.
- the metal layer 22 also has a second face 26 opposite to the first face 24.
- the imaging system 20 further comprises a prism 28 having a light input face 28A, a face 28B against which extends the second face 26 of the metal layer 22 and a light output face 28C .
- the imaging system 20 further includes an illumination device 30 designed to illuminate the second face 26 of the metal layer 22 with collimated and polarized light. Specifically, the collimated and polarized light is emitted from the illumination device 30 through the light input face 28A of the prism 28 to the second face 26 of the metal layer 22.
- the lighting device 30 is also designed to produce a surface plasmon resonance on the first face 24 of the metal layer 22. This resonance decreases the reflectance of the second face 26 and is sensitive to the refractive index.
- ambient air present up to a hundred nanometers above the first face 24, and therefore in particular above the olfactory sensors 18 which have a lower thickness.
- the interaction of a compound with any one of the sensors 18 modifies the refractive index of the air above this sensor and therefore decreases the reflectance of the second face 26 of the metal layer 22 below it. sensor.
- the reflectance of the second face 26 of the metal layer 22 varies locally under each olfactory sensor 18 as a function of the compound or compounds interacting with this sensor.
- the lighting device 30 is preferably designed to emit light of transverse magnetic polarization, denoted TM, that is to say having a magnetic field parallel to the second face 26 of the metal layer 22.
- the lighting device 30 can also be designed to emit on command, instead of the light TM, light of transverse electrical polarization, denoted TE, that is to say having a electric field parallel to the second face 26 of the metal layer 22.
- the prism 28 serves to obtain an angle of incidence upon arrival on the metal layer 22 (i.e., when the prism 28 is present, at the interface between the glass of the prism 28 and the metal layer 22) allowing the resonance of surface plasmons.
- the imaging system 108 further comprises a camera 32 arranged to receive the light emitted by the lighting device 30, after reflection by the second face 26 of the metal layer 22 and passage through the face of light output 28C from prism 28.
- Camera 32 is designed to provide a sequence of images G of sensors 18 from the received light.
- Each sequence of images represents all the signals provided by the olfactory sensors.
- each image is a luminance image whose pixel values are expressed in scalar values, so that each image is in grayscale.
- FIG 2 illustrates a typical schematic example of image G produced by the camera 32 of the electronic device of Figure 1, on which are visible the olfactory sensors 18 of this device with their significant luminance values of volatile organic compounds with which they were able to interact with. Note that in the example described, the sensors 18 are circular. But due to the inclination of the camera 32 relative to the second surface 26 of the metal layer 22, the areas they occupy in the image G are ellipses.
- Figure 1 illustrates obtaining signals representative of the interactions between the volatile organic compounds emitted by the product and the olfactory sensors 18 of the electronic device 10 using a device for 'SPR type optical index variation amplification, but this could be replaced by an optical index variation amplification device by Mach-Zehnder interferometry, a resonance mechanical frequency variation amplification device by functionalized resonant membranes (for example in MEMS or NEMS technology), or any other equivalent physical transduction device (ie optical, mechanical, etc.), by making a simple adaptation of the electronic device 10 which will not be described because to within the reach of those skilled in the art.
- the general idea remains to functionalize the olfactory sensors 18 (ie biosensors, polymers, carbon nanotubes, etc.) so that they adsorb and desorb volatile organic compounds in a differentiated way, to form a differentiated molecular interaction response. scent sensors, and amplify the response using a physical transducer device.
- olfactory sensors 18 ie biosensors, polymers, carbon nanotubes, etc.
- the device 10 further comprises several functional modules which will be described below.
- these modules are software in nature.
- the device 10 comprises a computer type element 34 comprising a processing unit 36 and an associated memory area 38 in which several computer programs or several functions of the same computer program are recorded.
- These computer programs include instructions designed to be executed by the processing unit 36 in order to perform the functions of the software modules. They are presented as distinct, but this distinction is purely functional. They could just as well be grouped together in all possible combinations in one or more software. Their functions could also be at least partly micro programmed or micro wired in dedicated integrated circuits, such as digital circuits.
- the computer 34 could be replaced by an electronic device composed only of digital circuits (without a computer program) for carrying out the same actions.
- the device 10 thus comprises first of all a software module 40, intended to be executed by the processing unit 36, for controlling the suction device 14, the air outlet 16 and the system of imaging 20.
- a software module 42 intended to be executed by the processing unit 36, for selecting, among the olfactory sensors 18 of the electronic device 10, of a subset of sensors sensitive to volatile components characteristic of the freshness of the product in question. These characteristic volatile components can vary from one product to another so that the selection of odor sensors made by the software module 42 can also vary and be configured.
- the selected subset comprises for example N> 1 olfactory sensor (s), in particular advantageously several olfactory sensors (N> 2).
- the device 10 further comprises a software module 44, intended to be executed by the processing unit 36, to extract N reflectance signals respectively representative of the interactions of the N olfactory sensors selected with the volatile organic compounds concerned from the luminance values specific to these N olfactory sensors selected in a sequence of images G supplied by the camera 32.
- These reflectance signals are for example expressed as a percentage according to a ratio of luminance values obtained with polarized light transverse on luminance values obtained with the same light polarized at 90 degrees for each of the N selected olfactory sensors.
- the device 10 further comprises a software module 46, intended to be executed by the processing unit 36, for selecting a time window for analyzing the N reflectance signals with a view to extracting therefrom N components d 'an olfactory signature representative of a state of freshness of the product studied.
- the device 10 further comprises a software module 48, intended to be executed by the processing unit 36, for obtaining the N components of the aforementioned olfactory signature from the N reflectance signals.
- This obtaining can include a correction of the N reflectance signals extracted in the selected time window.
- This correction will be detailed later with reference to FIG. 3. It mainly comprises two components: a correction for drift of the olfactory sensors which is well known and will not be detailed, as well as a correction by subtraction of a frame of reference which depends on a specific methodology for exposing olfactory sensors to ambient air when they are placed near the product studied. It makes it possible to obtain N corrected reflectance signals.
- Each of the N components of the signature results for example directly or indirectly from the calculation of a statistical value representative of a respective one of the N corrected reflectance signals in the selected time window. It could simply be a scalar average value in that time window. It can also be a more complex statistical value, scalar or vector.
- FIG. 3 An example of an olfactory signature with 19 components represented in a circular diagram is illustrated in FIG. 3.
- the device 10 comprises a memory area 50 for storing a reference signature with N components representative of an exposure of the olfactory sensors 18 to a reference humid environment without the presence of the product. studied.
- This reference signature is obtained by sequential execution of the software modules 42 to 48 at least once. Its N components result from the same selection and from the same treatments as those defined above for an exposure of the olfactory sensors 18 to the product studied.
- humid environment is meant an ambient air comprising a significant water vapor mass fraction, that is to say greater than 3000 ppm (parts per million), or even greater than 4000 ppm, and advantageously greater than 4500 ppm. , which is equivalent to a relative humidity greater than 90% at 4 ° C.
- the temperature of 4 ° C is taken as a reference because it is a good example, not limiting however, of the temperature of a refrigerated medium in which a product intended for consumption is usually stored and the freshness of which is monitored.
- device 10 optionally but advantageously comprises a software module 52, intended to be executed by processing unit 36, for statistical processing of several signatures with N components. In particular, it may be a simple averaging of the N reference signature components for obtaining a reference centroid signature.
- the device 10 further comprises a software module 54, intended to be executed by the processing unit 36, for calculating a similarity value between the N components of the signature representative of the state of freshness of the product. and those of the reference signature stored in memory 50.
- the similarity value is for example a distance value, among other possibilities an N-Euclidean distance, between signatures.
- This software module 54 is further designed to provide a product transformation index value, including a product freshness index from the calculated similarity value. It may be the similarity value itself, or else a calibrated value resulting from training carried out on several products of different degrees of freshness and known in advance to associate their respectively calculated similarity values with predetermined values of the freshness index.
- a preliminary and optional calibration step 100 consists in carrying out a training on several products of different degrees of transformation, in particular of different degrees of freshness and known in advance in order to associate their similarity values respectively calculated by execution of the software modules. 42 to 54 to freshness index values which are a priori assigned to them and which are chosen to have meaning for a user. It is thus constituted a intelligent correspondence between calculable similarity values and freshness index values more easily understood by the user. It is in this that the freshness index resulting then from an execution of the software modules 42 to 54 on a product whose freshness is not known can be considered as calibrated by exploitation of this learning. It should of course be noted that this intelligent correspondence can be declined according to different classes of products and different conditions of temperature, pressure, humidity or others.
- the electronic device 10 is arranged such that its olfactory sensors 18 can be exposed to a reference humid environment without the presence of any product capable of being transformed by emission of volatile organic compounds. More precisely, this step may include a first referential phase of exposure of the olfactory sensors 18 to a dry air environment without product, then a second analytical phase of exposure of the olfactory sensors 18 to the reference humid environment, then a second analytical phase of exposure of the olfactory sensors 18 to the reference humid environment.
- the camera 32 produces a sequence of images G which it transmits to the computer 34.
- dry environment an ambient air comprising a low mass fraction of water vapor, that is, that is to say less than 500 ppm (parts per million), or even less than 100 ppm, and advantageously less than 10 ppm, which is equivalent to a relative humidity of less than 0.1% at 4 ° C.
- dry air can for example be obtained by using silica gel or by extracting air in a frozen environment.
- the sequence of images G is received by the computer 34.
- the processing unit 36 then executes the software modules 42 and 44 to obtain N representative reflectance signals. of the image sequence G for each of the N selected olfactory sensors.
- N temporal signals such as those illustrated in FIG. 5.
- the processing unit 36 executes the software module 46 for the selection of a time window for analyzing the signals of reflectance such as those in figure 5.
- a time window for analyzing the signals of reflectance such as those in figure 5.
- two time windows were particularly relevant for this type of exposure in three phases of the olfactory sensors 18.
- a first relevant time window F1 relates to the end of the analytical phase and extends for example over samples 120 to 140 in the example of the signals of FIG. 5.
- a second relevant time window F2 relates to the start of the desorption phase and extends for example over samples 140 to 170 in the example of the signals of FIG. 5.
- One of these two time windows is therefore advantageously selected at this step.
- several time windows could be selected at this step in order to obtain a more complex signature with vector components, in particular the two windows F1 and F2.
- the processing unit 36 executes the software module 48 to obtain an N-component signature.
- the correction by subtraction of a reference frame mentioned above may consist in subtracting the observed shift of each of the reflectance signals in the reference phase from the respective values of these. signals in the analytical phase. For each reflectance signal, this offset is for example the average of the values of the signal in the referential phase.
- Steps 200 to 206 can be repeated as many times as desired, without modifying the selections chosen in steps 202 and 204, for obtaining several signatures with N components.
- the processing unit 36 executes the software module 52 for statistical processing of the resulting signatures and obtaining a signature reference, for example averaged, which is then stored in memory 50 during a step 210.
- the electronic device 10 is arranged such that its olfactory sensors 18 are exposed to the ambient air when they are placed near a product capable of being transformed, for example to degrade, by emission of volatile organic compounds. More precisely, this step comprises the same referential, analytical and desorption phases as those of step 200, except that the analytical phase is a phase of exposure of the olfactory sensors 18 to the volatile organic compounds emitted by the product. studied. During these three phases exposure, the camera 32 produces a new sequence of images G which it transmits to the computer 34.
- the sequence of images G is received by the computer 34.
- the processing unit 36 then executes the software modules 42 and 44, with the same selection of N olfactory sensors, for obtaining N reflectance signals representative of the image sequence G for each of the N selected olfactory sensors.
- N time signals such as those illustrated in FIG. 6 are obtained.
- the three aforementioned exposure phases can be seen very clearly there, as in FIG. 5.
- the windows F1 and F2 are particularly discriminating in order to distinguish a product in an advanced state of degradation from the reference situation of FIG. 5.
- the reflectance signals are distributed in a clearly different manner in the window F1 of. end of the analytical phase between FIGS. 5 and 6, while the return to the situation of the referential phase in the desorption phase is markedly slower in FIG. 6 than in FIG. 5, with in addition a larger residual signal.
- the processing unit 36 executes the software module 46 for the selection of the same analysis time window as in step 204.
- the processing unit 36 executes the software module 48 to obtain N components of a signature representative of a state of transformation, in particular of the freshness of the product studied.
- Steps 300 to 306 can be repeated as many times as desired, without modifying the selections chosen in steps 302 and 304, to obtain several signatures representative of the state of freshness of the product studied.
- the processing unit 36 executes the software module 52 for statistical processing of the resulting signatures and obtaining a signature final representative, for example averaged.
- the processing unit 36 executes the software module 54 for the calculation of a similarity value between the N components of the signature representative of the state of freshness of the product. studied and those of the reference signature stored in memory 50 and to deduce therefrom a value "IND" of transformation index, in particular of freshness of the product from the value of calculated similarity. This deduction can be carried out by exploiting the learning of the preliminary step 100 if necessary.
- the electronic device 10 illustrated in Figure 1 is also shown in the form of a single and compact device integrating the sensors 18 of the chamber 12, the imaging system 20, the processing unit functional modules and computer programs, as well as the signature storage memory 50. But these elements are separable according to multiple variants. In particular, the functional modules and the memory 50 can be easily deported, knowing that they must remain able to receive the signals from the sensors via the imaging system 20 or any other equivalent transduction system.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR2000226A FR3106212B1 (fr) | 2020-01-10 | 2020-01-10 | Dispositif électronique, procédé et programme d’ordinateur pour l’estimation olfactive d’un état d’un produit |
PCT/FR2021/050028 WO2021140303A1 (fr) | 2020-01-10 | 2021-01-08 | Dispositif électronique, procédé et programme d'ordinateur pour l'estimation olfactive d'un état d'un produit |
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EP4088111A1 true EP4088111A1 (fr) | 2022-11-16 |
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EP21704850.3A Pending EP4088111A1 (fr) | 2020-01-10 | 2021-01-08 | Dispositif électronique, procédé et programme d'ordinateur pour l'estimation olfactive d'un état d'un produit |
Country Status (7)
Country | Link |
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US (1) | US20230032568A1 (fr) |
EP (1) | EP4088111A1 (fr) |
JP (1) | JP2023510821A (fr) |
KR (1) | KR20220123711A (fr) |
CN (1) | CN115136002A (fr) |
FR (1) | FR3106212B1 (fr) |
WO (1) | WO2021140303A1 (fr) |
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FR3130380B1 (fr) | 2021-12-14 | 2023-12-22 | Aryballe | Procédé d’estimation par un nez électronique de l’état de transformation d’un produit en cours de cuisson |
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KR100795227B1 (ko) * | 2006-08-22 | 2008-01-17 | 강릉대학교산학협력단 | 센서 어레이 신호 패턴 분석 방법 및 장치 |
FR3063543B1 (fr) | 2017-03-03 | 2022-01-28 | Commissariat Energie Atomique | Procede de calibration d'un nez electronique. |
IL254235A0 (en) * | 2017-08-31 | 2017-10-31 | Kerem Zohar | System and method for monitoring conditions of organic products |
FR3071061B1 (fr) | 2017-09-14 | 2019-09-13 | Aryballe Technologies | Systeme de detection perfectionne pour nez electronique et nez electronique comprenant un tel systeme |
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2020
- 2020-01-10 FR FR2000226A patent/FR3106212B1/fr active Active
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2021
- 2021-01-08 CN CN202180015274.6A patent/CN115136002A/zh active Pending
- 2021-01-08 EP EP21704850.3A patent/EP4088111A1/fr active Pending
- 2021-01-08 WO PCT/FR2021/050028 patent/WO2021140303A1/fr unknown
- 2021-01-08 JP JP2022542457A patent/JP2023510821A/ja active Pending
- 2021-01-08 US US17/791,768 patent/US20230032568A1/en active Pending
- 2021-01-08 KR KR1020227027491A patent/KR20220123711A/ko unknown
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Publication number | Publication date |
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KR20220123711A (ko) | 2022-09-08 |
FR3106212A1 (fr) | 2021-07-16 |
US20230032568A1 (en) | 2023-02-02 |
JP2023510821A (ja) | 2023-03-15 |
WO2021140303A1 (fr) | 2021-07-15 |
FR3106212B1 (fr) | 2022-10-14 |
CN115136002A (zh) | 2022-09-30 |
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