EP3455615A1 - Verfahren zur bestimmung der erreichten qualität bei der herstellung von granulaten oder pellets oder von beschichtungen auf granulen oder pellets - Google Patents
Verfahren zur bestimmung der erreichten qualität bei der herstellung von granulaten oder pellets oder von beschichtungen auf granulen oder pelletsInfo
- Publication number
- EP3455615A1 EP3455615A1 EP17722401.1A EP17722401A EP3455615A1 EP 3455615 A1 EP3455615 A1 EP 3455615A1 EP 17722401 A EP17722401 A EP 17722401A EP 3455615 A1 EP3455615 A1 EP 3455615A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- analysis
- sample
- wavelet
- granules
- spectra
- 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- Withdrawn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
Classifications
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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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- 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
- 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
- G01N2021/8411—Application to online plant, process monitoring
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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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
- G01N2021/8427—Coatings
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
-
- 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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9508—Capsules; Tablets
-
- 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
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/129—Using chemometrical methods
Definitions
- the invention relates to a method for determining the quality achieved in the production of granules or pellets or of coatings on granules or pellets. These are production processes in which suspensions are used for the production of granules or pellets or liquids or suspensions for the formation of coatings.
- Pelletizing and granulation are shaping processes which considerably simplify and / or facilitate the handling and application of powdery materials.
- binder materials, solvents and / or a liquid and the pulverulent target compound (s) are mixed in a recipe-based manner and the solvent and / or a liquid are expelled again (eg thermally), whereby the particles become pellets / granulates, hereinafter referred to as granules. to agglomerate in the desired size and shape.
- the nature of these granules shape, size, solvent / liquid content
- is a decisive quality feature is largely determined by the correct time of discontinuation of the granulation or coating process. This is e.g. a problem in the granulation of zeolite powders.
- NIR and / or Raman spectroscopy There are methods of process control based on single-point spectroscopy (NIR and / or Raman spectroscopy).
- Commercial systems exist especially for use in the production of medical products.
- NIR and / or Raman spectroscopy have the following disadvantages.
- Single-point spectrometers allow only a small sample of the system. Since the processes are preferably produced in batch processes, it is not possible for the single-point spectrometer to distinguish between solution / suspension and already formed granules. Since the individual chemical components do not change during granulation or coating. In addition, the entirety / progress of the granulation or coating can not be detected.
- a disadvantage of NIR spectroscopy is the strong dependence on the respective possibly also during the process possibly changing water content, and in RAMAN spectroscopy aspects for laser safety are disadvantageous.
- Mass spectrometry which is very complex and difficult to use under production conditions.
- An indirect method of controlling granulation processes is to determine the power consumption of the granulation plant. By changing the material properties during granulation, the required force of the plant changes, allowing the end point to be estimated. However, this is not sufficient for a sufficiently accurate determination and quality control in the production.
- a sample is preferably taken during the production or coating process.
- the sample is homogeneously illuminated with a radiation source and electromagnetic radiation reflected from the surface of the sample is directed onto a hyperspectral imaging (HSI) camera formed with a row and column array of optical detectors.
- HSA hyperspectral imaging
- the detected intensities of the reflected electromagnetic radiation are recorded in terms of wavelength and spatial resolution, and from the recorded spectra, preferably by means of principal component analysis, the determining variables, which represent spectral points that differ most or substantially in an amount of the recorded wavelength spectra, and thus the variance describe between the spectra, extracted.
- a wavelet analysis is performed and the root of the sum of squares of the coefficients of the wavelet matrix (energy) is determined, or the derivative of parameters from the wavelet analysis by entropy, grayscale matrix, or other texture analysis method is used, wherein from the determined energy values of the wavelet analysis then preferably a linear correlation, in particular by interpolation or a multivariate partial-least-square (PLS) correlation model for the respective sample is created and the result with in advance in the same way at different states, of a condition of the desired quality, treated and detected samples is compared, which is terminated with sufficient agreement with a state of the desired quality of the granulation or coating process.
- PLS partial-least-square
- electromagnetic radiation from the wavelength range 400 nm to 2500 nm and a wavelength-resolved detection and evaluation of electromagnetic radiation reflected by a sample should preferably be carried out with at least 20 spectral interpolation points in the stated wavelength range.
- the electromagnetic radiation can be polarized.
- a sample should preferably consist of several granules or pellets, which particularly preferably form a plurality of superimposed layers within a sample receiving container and / or the respective sample and the hyperspectral imaging detector, hereinafter referred to as HSI camera, are moved relative to each other.
- the proposed procedure and the metrological set-up used to determine the end point of a granulation method or a coating method of granules works by combined evaluation of a spatially resolved (imaging) optical-spectroscopic analysis (Hyperspectral Imaging, HSI) of the sample material.
- HSI spatially resolved optical-spectroscopic analysis
- the principal components are used to extract the determining variables and to form the main components.
- core values On the basis of the local distribution of the main components ("score values"), a wavelet analysis is performed and the root of the sum of the squares of the coefficients of the wavelet matrix (energy) is determined and compared with one sample each, which corresponds to the concrete
- Granulation or coating process was taken in a memory stored.
- a specific sample taken can then be metrologically analyzed with an HSI measurement setup and the optically detected intensities of the detected wavelengths acquired at location and wavelength resolution can be compared with the previously determined values for the individual different states. If a match is detected with sufficient specifiable accuracy, an assignment of the corresponding sample can take place. Depending on the result, the granulation or coating process can be continued or terminated.
- grayscale matrix can also be used.
- Other methods of texture analysis can be used. These are e.g. Local Binary Parti- tion / LBP, method for determining the edge density or gray value transition matrices.
- the comparison of the determined energy values of the wavelet analysis with the results stored in the memory and determined beforehand is carried out by a linear correlation or a multivariate partial-least-square (PLS) correlation model.
- the starting point for the creation of the correlation model are also known states of the granulation or coating process. In the process, the end point determination / prediction of the granulation or coating state takes place via the correlation established.
- Other multivariate classification / regression models such as Principle Component Regression (PCR), k-nearest neighbor (knn) methods, discriminant analysis (DA) or support vector methods (SVM).
- ⁇ Design can be adapted to the sample surface by using different optics, working distances and enlargements
- the use of a camera solution is carried out using an algorithm for compressing the spectral / chemical information and the image information.
- the aim of the investigation was to determine the granulation state of a zeolite granulate can be detected by a measurement with the described measuring arrangement and thus to be able to objectively determine the end point of the granulation.
- Zeolite granules were taken from the granulation process in five different granulation states and investigated with the described measuring arrangement.
- the measuring arrangement in this case consists of a homogeneous halogen illumination, a movement unit and a NIR hyperspectral camera.
- the zeolite granules were poured in multiple layers and then examined.
- the five granulation states were:
- the five granulation states differ based on their water content and the morphology of the granule components.
- the result of the investigation with the measuring system described are spectral images of a 2.5 ⁇ 2.5 cm section of the zeolite granules of the respective sample with a lateral resolution of 450 ⁇ m recorded with the HIS camera.
- a complete wavelength spectrum is stored (900 nm - 2300 nm, 7 nm spectral resolution, corresponding to a total of 198 wavelengths).
- twelve spectral images were taken.
- the individual spectra of the images thus obtained are subjected to a simple preprocessing.
- the reflection spectra detected with the HSI camera are converted by logarithmic transformation into absorption spectra and all spectra of the respective samples are normalized to the unit vector.
- a principal component model is created using all measured spectra of a given sample. At least one main component, preferably the first three main components (loads) of the model obtained, describe 99.7% of the variance of all measured spectra.
- the main component transformation also determined the affiliation with the determined loadings, these 'score values', are calculated by the scalar multiplication of the principal component vectors with the respective spectrum.
- the distribution of the 'score values' of the principal component analysis is at least one, preferably at least three 'score images' for each spectral image taken.
- a wavelet texture analysis is performed for each of these 'score images'.
- a discrete wavelet decomposition to a depth of 3 determination of the fine, medium and coarse structure, carrying out in each case a further wavelet decomposition on the result of the previous wavelet decomposition), respectively for the one or preferably three axial direction ( en) (diagonal, vertical and horizontal).
- the wavelet used here is Daubechis 8.
- the result is at least one, preferably nine wavelet coefficient images per measured spectral image. Then, for each of the wavelet coefficient images, the energy is calculated:
- the resulting model has a classification rate of ⁇ 97%.
- spectral images were incorrectly classified. These are from Groups 4 and 5, which are very similar both in water content and in morphology.
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)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016208087.3A DE102016208087B3 (de) | 2016-05-11 | 2016-05-11 | Verfahren zur Bestimmung der erreichten Qualität bei der Herstellung von Granulaten oder Pellets oder von Beschichtungen auf Granulen oder Pellets |
| PCT/EP2017/059920 WO2017194308A1 (de) | 2016-05-11 | 2017-04-26 | Verfahren zur bestimmung der erreichten qualität bei der herstellung von granulaten oder pellets oder von beschichtungen auf granulen oder pellets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3455615A1 true EP3455615A1 (de) | 2019-03-20 |
Family
ID=58585500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17722401.1A Withdrawn EP3455615A1 (de) | 2016-05-11 | 2017-04-26 | Verfahren zur bestimmung der erreichten qualität bei der herstellung von granulaten oder pellets oder von beschichtungen auf granulen oder pellets |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3455615A1 (de) |
| DE (1) | DE102016208087B3 (de) |
| WO (1) | WO2017194308A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11609181B2 (en) | 2017-10-16 | 2023-03-21 | Hamamatsu Photonics K.K. | Spectral analysis apparatus and spectral analysis method |
| CN109086254A (zh) * | 2017-12-29 | 2018-12-25 | 东北电力大学 | 基于高光谱技术石蜡内部组分综合等级评定 |
| US20200065582A1 (en) * | 2018-08-21 | 2020-02-27 | Battelle Memorial Institute | Active hyperspectral imaging with a laser illuminator and without dispersion |
| CN110487808A (zh) * | 2019-08-22 | 2019-11-22 | 广东智源机器人科技有限公司 | 一种用于自动化炒锅锅胆的卫生状态检测方法及系统 |
| CN111398211A (zh) * | 2020-03-09 | 2020-07-10 | 浙江工业大学 | 一种苍术颗粒剂的信息区分处理方法 |
| CN114813434B (zh) * | 2022-02-16 | 2024-08-20 | 浙江工业大学 | 基于多目标优化和多光谱技术的水分和粒径同时检测的方法 |
| CN116038649B (zh) * | 2023-03-28 | 2023-06-27 | 浙江大学 | 一种检测流化床制粒过程中多质量指标的机器人及方法 |
| CN118096734B (zh) * | 2024-04-23 | 2024-07-12 | 武汉名实生物医药科技有限责任公司 | 一种基于大数据的产品质量监测方法及系统 |
| CN120558966B (zh) * | 2025-06-03 | 2025-11-11 | 北京梦幻三星涂装设备技术开发公司 | 一种基于机器视觉的沸石分子筛状态智能监控方法与装置 |
-
2016
- 2016-05-11 DE DE102016208087.3A patent/DE102016208087B3/de active Active
-
2017
- 2017-04-26 WO PCT/EP2017/059920 patent/WO2017194308A1/de not_active Ceased
- 2017-04-26 EP EP17722401.1A patent/EP3455615A1/de not_active Withdrawn
Non-Patent Citations (3)
| Title |
|---|
| GARCIA-MUNOZ S ET AL: "Coating uniformity assessment for colored immediate release tablets using multivariate image analysis", INTERNATIONAL JOURNAL OF PHARMACEUTICS, ELSEVIER, NL, vol. 395, no. 1-2, 16 August 2010 (2010-08-16), pages 104 - 113, XP027122836, ISSN: 0378-5173, [retrieved on 20100524] * |
| P. WOLLMANN ET AL: "Non-destructive screening, 100 % inspection and characterization by hyperspectral imaging", 26 April 2016 (2016-04-26), XP055590275, Retrieved from the Internet <URL:https://web.archive.org/web/20160426142301if_/http://www.iws.fraunhofer.de/content/dam/iws/de/documents/projekte/cvd/prozess-monitoring/imanto_hyperspectral-imaging_brochure.pdf> [retrieved on 20190520] * |
| See also references of WO2017194308A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016208087B3 (de) | 2017-05-11 |
| WO2017194308A1 (de) | 2017-11-16 |
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