WO2019029907A2 - Dispositif de mesure spectrométrique et procédé pour l'analyse d'un milieu utilisant un dispositif de mesure spectrométrique - Google Patents

Dispositif de mesure spectrométrique et procédé pour l'analyse d'un milieu utilisant un dispositif de mesure spectrométrique Download PDF

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Publication number
WO2019029907A2
WO2019029907A2 PCT/EP2018/067743 EP2018067743W WO2019029907A2 WO 2019029907 A2 WO2019029907 A2 WO 2019029907A2 EP 2018067743 W EP2018067743 W EP 2018067743W WO 2019029907 A2 WO2019029907 A2 WO 2019029907A2
Authority
WO
WIPO (PCT)
Prior art keywords
medium
measuring device
spectrometric
spectrometric measuring
opening
Prior art date
Application number
PCT/EP2018/067743
Other languages
German (de)
English (en)
Other versions
WO2019029907A3 (fr
Inventor
Marion Hermersdorf
Ralf Noltemeyer
Martin HUSNIK
Florian Michel
Benedikt Stein
Christoph Schelling
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP18737566.2A priority Critical patent/EP3665453A2/fr
Publication of WO2019029907A2 publication Critical patent/WO2019029907A2/fr
Publication of WO2019029907A3 publication Critical patent/WO2019029907A3/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00—Supporting devices; Holding devices
    • B01L9/06—Test-tube stands; Test-tube holders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0202—Mechanical elements; Supports for optical elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0256—Compact construction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0272—Handheld
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0291—Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/12—Generating the spectrum; Monochromators
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions

Definitions

  • a spectrometric measuring device and method for analyzing a medium using a spectrometric measuring device A spectrometric measuring device and method for analyzing a medium using a spectrometric measuring device
  • US 5909280 A describes a microspectrometer which comprises a monolithically integrated light source and a monolithically integrated detector.
  • the microspectrometer is used as part of a sensor system that is suitable for testing both solids and liquids.
  • Microspectrometer includes a Fabry-Perot interferometer as a spectral element and a chamber into which the medium to be examined can be introduced via a channel.
  • the light source and the detector are disposed on opposite sides of the chamber.
  • the invention relates to a spectrometric measuring device, a method for analyzing a medium using a spectrometric
  • Measuring device and a computer program product.
  • Spectral information of a medium can be from one of the medium
  • coming electromagnetic radiation for example from one of the medium emitted, reflected, transmitted and / or scattered
  • electromagnetic radiation for example from a spectrometer
  • a spectral element such as a grating spectrometer, Fabry-Perot interferometer, transmission filter / linear Variable filters or Fourier transform spectrometers may in this case be arranged between a light source and the medium to be examined and / or between the medium and a detector.
  • a transmission measurement or a reflection measurement can be carried out. In transmission measurements, electromagnetic radiation is transmitted from the medium to be examined, the transmitted
  • the transmitted electromagnetic radiation has spectral information about the medium.
  • the transmitted electromagnetic radiation can
  • Wavelength are selectively detected and give information about the spectral composition of the medium.
  • electromagnetic radiation is reflected by the medium to be examined, the reflected electromagnetic radiation having spectral information about the medium.
  • the reflected electromagnetic radiation can be detected wavelength-selective and provide information about the spectral composition of the medium.
  • Fluids i. Liquids, gases and mixtures of liquids and gases reflect in part only a small portion of an electromagnetic radiation impinging on the fluid, a larger proportion of that on the fluid
  • incident electromagnetic radiation is transmitted by the fluid.
  • the electromagnetic radiation which comprises spectral information about the medium, is reflected.
  • the spectrometric measuring device can be extended. Furthermore, the spectrometric measuring device has an improved mechanical and metrological robustness.
  • spectrometric measuring device which is used to acquire spectrometric data of both solids and fluids "receiving” here means that the medium can be arranged for example in the receiving device or can be introduced into the receiving device
  • Miniaturspektrometer which is used to acquire the spectrometric data of the
  • Medium comprises a lighting unit which is adapted to irradiate the medium with an electromagnetic radiation and a detection unit which is adapted to detect a coming from the direction of the medium radiation portion of the electromagnetic radiation.
  • the spectrometric measuring device is characterized in that the miniature spectrometer on a first side of the
  • Receiving device is arranged and that on one of the first side opposite the second side of the receiving device a
  • the coupling-in structure is set up to couple at least one radiation component of the electromagnetic radiation coming from the illumination unit into an optical waveguide, wherein the optical waveguide is set up to guide the radiation component from the second side to the detection unit, wherein the detection unit is arranged on the first side.
  • Measuring device is robust against changes in the measuring geometry. Another advantage is that the spectrometric measuring device a
  • the distance between the miniature spectrometer and the coupling-in structure and an alignment of the miniature spectrometer and the coupling-in structure relative to one another are predetermined by the spectrometric measuring device.
  • Miniaturspektrometers relative to the coupling structure can be avoided or reduced and thereby the reliability of the acquired spectrometric data can be increased. This will also allow an untrained or untrained user to easily
  • measurement artifacts can arise when the spectrometer is held at an angle that is unfavorable to the measurement relative to the sample. For example, due to an unfavorable relative orientation between the miniature spectrometer and the sample, only a small proportion of the electromagnetic radiation to be detected can be detected in the
  • Miniature spectrometer occur so that a large portion of the signal is lost or it is mainly detected only direct reflection, which does not include information about the interior of the sample.
  • the receiving device comprises a holding structure with an opening.
  • the support structure defines a region in which the medium can be arranged to acquire the spectrometric data of the medium.
  • the holding structure may, for example, enclose a circular opening.
  • the holding structure may be annular.
  • the opening can be rectangular, polygonal, etc., or have any desired shape.
  • a vessel in which the medium is arranged are introduced into the opening.
  • the support structure can be the vessel and thus the medium in the beam path between the
  • Measuring device and a simple removal of the medium from the spectrometric measuring device can be made possible by the user.
  • the miniature spectrometer and the miniature spectrometer can be integrated into the support structure.
  • the receiving device may have a positioning device.
  • the holding structure may comprise the positioning device. The positioning device is set up to position the miniature spectrometer on the first side of the recording device and to connect the optical waveguide to the detection unit in such a way that the radiation fraction of the electromagnetic radiation guided in the optical waveguide is guided into the detection unit.
  • the miniature spectrometer can be designed as a mobile terminal, which can be placed on the first side of the spectrometric measuring device.
  • the positioning device may, for example, a mark, a depression, a projection, etc. or a
  • Miniature spectrometer can facilitate.
  • the positioning device can furthermore be set up to use miniature spectrometers at the
  • the medium comprises a fluid in a vessel or a solid in a vessel, wherein the opening is adapted to
  • Solid bodies may include, for example, powders, granules, etc., or mixtures thereof. Fluids can be
  • the medium may comprise a mixture of solids and fluids.
  • Measuring device and the medium come into direct contact with each other and contamination of the spectrometric measuring device can be avoided. As a result, multiple measurements of different media can be performed one after the other with high reliability without mutual interference.
  • a dimension of the opening may be adaptable in one embodiment.
  • Dimension may include, for example, a diameter, a circumference, a length, a height, a width, etc. of the opening.
  • a surface of the holding structure facing the opening may be covered at least in sections with a flexible and / or elastic material. Care is taken to ensure that the optical beam path remains adjusted.
  • a lamellar structure may be arranged at least in sections on the inner surface of the holding structure facing the opening, wherein the dimension of the opening depends on an adjustment of the lamellar structure.
  • a lamellar structure may include at least a first movable fin element, wherein a first region of the movable fin element is fixedly connected to the support structure and a second region of the movable fin element has an adjustable angle to the support structure. By varying the adjustable angle, the opening can be made smaller or larger.
  • Opening to the medium or to the vessel in which the medium is arranged can be adjusted so that the medium or the vessel can be held securely and firmly in the beam path between the miniature spectrometer and the coupling structure.
  • Stepper motors take place, which are covered by the spectrometric measuring device.
  • the stepper motor can adjust the adjustable angle.
  • One advantage is that the dimension of the opening can be adapted to the medium or to the vessel.
  • the coupling-in structure and the optical waveguide can be integrated into the holding structure. That is, the coupling structure and / or the optical waveguides can be at least partially or completely embedded in the support structure or arranged on the support structure.
  • a diffuser can be arranged or arranged in the beam path between the illumination unit and the receiving device.
  • the diffuser can allow an approximately homogeneous illumination of the medium.
  • a directional diffuser can be used for this purpose. An advantage is that thus the reliability of the spectrometric data can be increased.
  • a light source which radiates over a wide angular range and which differs from the light source
  • Lighting unit is used to be used for irradiation of the medium.
  • a spectral element can be arranged or arrangeable in the beam path between the illumination unit and the recording device and / or can be encompassed by the detection unit.
  • the spectral element enables a wavelength-selective measurement of the
  • Solid as well as a liquid can be, using the
  • spectrometric measuring device comprising the steps:
  • Detecting is performed in the detection unit.
  • An advantage is that with this method both solids and fluids can be examined spectrometrically.
  • Another advantage is that the analysis of the medium only in small Depending on the measurement geometry depends and thus the analysis of the medium can be done with a high reliability.
  • the dimension of the opening can be adjusted, wherein the
  • Fig. 1 is a plan view of a spectrometric measuring device in one
  • FIG. 2 is a side view of a spectrometric measuring device according to a
  • Embodiment which on a vessel in which a medium
  • FIG. 3 shows a section of a plan view of a spectrometric measuring device according to an embodiment on which a mobile terminal is arranged;
  • FIG. 4 shows a section of a plan view of a spectrometric measuring device according to an embodiment comprising a miniature spectrometer; to a spectrometric measuring device according to an embodiment, wherein in an opening a holding structure is arranged a lamellar structure,
  • FIG. 6 is a plan view of a spectrometric measuring device in one
  • Beam path is arranged
  • FIG. 7 is a flowchart of a method for analyzing a medium according to an embodiment and 8 shows a flowchart of a method for analyzing a medium according to a further exemplary embodiment.
  • Fig. 1 is a plan view of a spectrometric measuring device 100 is shown in a cross section.
  • the spectrometric measuring device 100 is set up to acquire spectrometric data of solids and fluids.
  • a receiving device 102 is adapted to receive a medium 104 'to be examined.
  • the receiving device 102 in this exemplary embodiment comprises a holding structure 102 'with an opening 102 ".
  • the medium 104' or a vessel 104 can be arranged, in which the medium 104 'is arranged
  • a depression in the support structure 102 'or through the support structure 102' through hole are understood.
  • the medium 104 ' may comprise a powder, a granulate, a liquid, a gas or a mixed form of the aforementioned.
  • the spectrometric measuring device 100 may be at least partially immersed or introduced into the medium 104' such that the medium 104 'may enter the opening 102". 1, the holding structure 102 'is of annular design in the region of the opening 102.
  • the holding structure 102' may be formed, for example, of a material transparent to the electromagnetic radiation 1010 'coming from a lighting unit 1010.
  • the opening 102' here has a circular shape Cross-section on.
  • the diameter of the opening may range from 1 centimeter (cm) to 15 cm, including the diameters of 1 cm and 15 cm, or less than 1 cm and / or greater than 15 cm.
  • the opening 102 is not limited to a circular cross-section, but may for example be rectangular, elliptical or otherwise shaped.
  • the opening 102 may be adapted to the vessel 104 used for the measurement. Possible dimensions of the opening 102 "are in the range of a few centimeters, for example, the opening 102" is designed to accommodate bottles, test tubes, cuvettes, etc.
  • the support structure may be formed, for example, of a plastic.
  • a miniature spectrometer 101 is arranged on a first side 1021 of the recording device 102.
  • the miniature spectrometer 101 is a spectrometer which
  • the microspectrometer is greater than 1 cm 3 and less than 1000 cm 3 .
  • the microspectrometer is greater than 1 cm 3 and less than 1000 cm 3 .
  • Microspectrometer also be less than 1 cm 3 and greater than 0.01 cm 3 . Alternatively or additionally, the microspectrometer may also be smaller than 100 cm 3 and larger than 0.01 cm 3 .
  • the miniature spectrometer 101 is adapted to radiation properties as a function of the wavelength of the detected electromagnetic
  • the miniature spectrometer 101 comprises a lighting unit 1010, which is set up to irradiate the medium 104 'with the electromagnetic radiation 1010. Further, the miniature spectrometer 101 comprises a detection unit 101 1, which is adapted to Direction of the medium coming radiation fraction 101 1 "of
  • the lighting unit 1010 and the detection unit 101 1 may be arranged, for example, in a housing.
  • the miniature spectrometer 101 is arranged in FIG. 1 on an outer surface 1023 of the support structure 102 'facing away from the opening 102 "
  • Miniature spectrometer 101 may in this case be integrated into holding structure 102 'and thus included in spectrometric measuring device 100. Alternatively or additionally, the miniature spectrometer 101 can be placed on the support structure 102 'or detachably mounted on the support structure 102'.
  • the illumination unit 1010 may include a light source.
  • the light source may be, for example, an incandescent lamp, a thermal emitter, a laser, one or more light emitting diodes (LED),
  • the illumination unit 1010 and / or the detection unit 101 1 may comprise a spectral element.
  • the spectral element may be, for example, a Fabry-Perot interferometer, a grating spectrometer, a transmission filter, a static or moving Fourier transformation spectrometer, or another
  • the detection unit 101 1 may be any one of the plurality of filters.
  • the detection unit 101 1 may be any one of the plurality of filters.
  • Detector element or a detector array comprising a plurality of detector elements comprise.
  • a radiation sensor for example based on silicon (Si), germanium (Ge), germanium on silicon, indium gallium arsenide (InGaAs), lead selenite (PbSe) can be used.
  • radiation sensors are suitable for example, photodiodes or bolometers. Radiation sensors may output an electrical signal depending on a property of the electromagnetic radiation impinging on the radiation sensor, which is a measure of the radiation property. Radiation sensors can measure, for example, an intensity or an energy flux density of the radiation component 101 1 ".
  • a coupling structure 1030 is arranged.
  • Einkoppel Modell 1030 is adapted to at least a portion (101 1 ") of the coming of the illumination unit 1010 electromagnetic radiation 1010 'in one
  • the optical waveguide 1031 is adapted to the coupled radiation portion 101 1 "from the second side 1022 to
  • Fig. 1 is the
  • Optical waveguide 1031 disposed on the outer surface 1023 of the support structure 102 '.
  • the optical waveguide 1031 can be at least partially or completely embedded in the support structure 102 'or arranged on an inner surface 1024 of the support structure 102' facing the opening 102 "
  • Optical waveguide 1031 is connected to detection unit 101 1 in such a way that the radiation fraction 101 1 "guided in optical waveguide 1031 can be guided into the detection unit and can be detected there.
  • Optical waveguide can be used as an optical waveguide 1031, the diameter of which may be, for example, from 50 inclusive to 1000 inclusive ⁇ or may be greater than 1000 ⁇ . Alternatively or in addition, a bundle of several optical waveguides can also be used as the optical waveguide 1031.
  • optical fiber 1031 may be made of glass, doped glass, plastics such as
  • a waveguide can also be used as optical waveguide 1031.
  • the coupling into the detection unit takes place
  • optical fiber 1031 for example with a focusing element between optical fiber 1031 and detection unit (e.g., collimating lens or optics imprinted directly on the fiber).
  • detection unit e.g., collimating lens or optics imprinted directly on the fiber.
  • the medium 104 ' is arranged in the beam path of the miniature spectrometer 101 between the first side 1021 and the second side 1022. Under the beam path of the miniature spectrometer 101, the geometric course of the
  • the length of a path of the electromagnetic radiation 1010 'through the medium 104' may be adjusted by selecting a diameter of the opening 102 "and / or by selecting a dimension of the vessel 104" and thus a thickness of the medium 104 'to be penetrated.
  • the material from which the support structure 102 'is formed and the material from which the vessel 104''is formed have a similar index of refraction, thereby advantageously allowing radiation losses at the interface between
  • Support structure 102 'and vessel 104 can be reduced or avoided Furthermore, the electromagnetic radiation coming from the illumination unit 1010 can
  • skilfully chosen materials can be understood to mean air-free transparent and elastic materials motorized adjustable or electrically adjustable components, such as micromirrors, by means of which a propagation direction of the electromagnetic radiation 1010 ', 101 1 "can be adjusted.
  • motorized adjustable or electrically adjustable components such as micromirrors
  • Components are, for example, diffractive optical elements
  • FIG. 2 shows a side view of the spectrometric measuring device 100 according to an exemplary embodiment, wherein the spectrometric measuring device 100 is arranged on the vessel 104 ''
  • the vessel 104 '' is introduced into the opening 102 'of the holding structure 102' Vessel 104 "designed as a bottle in which the medium 104 'is arranged.
  • the vessel 104 '' is introduced into the opening 102 'of the holding structure 102' Vessel 104 "designed as a bottle in which the medium 104 'is arranged.
  • the optical waveguide 1031 is in this case arranged on the outer surface 1023 of the support structure 102 '
  • the miniature spectrometer 101 may be fixedly arranged on the support structure 102' or be formed as an independent device, which can be arranged or fastened on the support structure 102 '
  • Miniaturspektrometer 101 in a mobile terminal 108 for example, a
  • FIG. 3 shows an exemplary embodiment in which the mobile terminal 108 comprising the miniature spectrometer 101 can be arranged by means of a positioning device 107 at a predetermined position of the holding structure 102 '.
  • the support structure 102 ' has in Fig. 3 on a projection 107', on which the mobile
  • Terminal 108 can be arranged so that the miniature spectrometer 101 at the predetermined position, here the first side 1021 of the support structure 102 ', can be positioned.
  • the predefined position is chosen such that the radiation component 101 1 "can be coupled into the optical waveguide 1031 by means of the coupling-in structure 1030.
  • the positioning device 107 is formed as a recess in the support structure 102 '.
  • the miniature spectrometer 101 or the mobile terminal 108, which comprises the miniature spectrometer 101, can be arranged precisely in the recess 107 "and can thus be located at a predetermined position of the
  • the miniature spectrometer 101 may also be fixed to the
  • Support structure 102 ' are connected, wherein it is inserted, for example, during manufacture in the recess 107 "and connected to the support structure 102'.
  • the mobile terminal 108 may include a computing unit configured to process signals or data, a memory unit configured to store signals or data, a communication interface for reading and / or outputting data, and a display unit configured to receive information and / or to display measurement results.
  • the arithmetic unit may include, for example, a processor or a microcontroller.
  • the communication interface can be designed to read in or output data wirelessly and / or by line.
  • the mobile terminal 108 may be a smartphone in the storage unit of which a software application (app) may be stored, or where the app may be downloadable or available online. The app can be set up to perform a measurement by means of the spectrometric measuring device 100.
  • the measurement results or results of a spectrometric evaluation of the measurement results can be output to the user via a display unit of the mobile terminal 108, for example.
  • Possible display units are, for example, displays or Speaker by means of which optical, haptic or acoustic outputs can be made.
  • the miniature spectrometer 101 is exemplified as part of the support structure 102 '. Alternatively or additionally, the miniature spectrometer 101 may also be formed separately or as part of a mobile terminal as described above.
  • the support structure 102 ' encloses the opening 102 "here annular
  • Lamella elements 109 ' The lamellar elements 109 'can be designed, for example, as movable structural elements which are firmly connected to the support structure 102' in a first region and which can have a second region whose angle 109 'is adjustable relative to the support structure 102' 5 are shown by curved directional arrows on one of the lamellar elements 109 'in FIG
  • Lamella elements 109 ' can be formed, for example, from an elastic material. Upon insertion of the vessel 104 "into the opening 102", the lamellar elements 109 'may be pressed towards the support structure 102' such that the diameter of the opening 102 "increases relative to the diameter of the opening 102" prior to insertion of the vessel 104 " The opening 102 "thus depends on an adjustment of the lamellar structure 109. In one
  • the lamellar structure 109 can be adjusted by means of stepper motors.
  • the setting of the lamellar structure can also be done manually.
  • the control unit transmits electrical signals to the stepping motors, which can be used to adjust the angles 109.
  • the operation of the control unit by a user can take place, for example, via a display screen, for example as a touchscreen.
  • Fig. 6 is a plan view of the spectrometric measuring device 100 in one
  • a diffuser 1091 is arranged in the beam path of the miniature spectrometer 101. In this
  • the positioning device 107 is formed as a projection 107 ', on which the miniature spectrometer 101 is arranged, or to which the mobile terminal 108 can be arranged.
  • the diffuser 1091 is here in the
  • the diffuser 1091 may be integrated in the support structure 102 'or in the miniature spectrometer 101.
  • the electromagnetic radiation 1010 'coming from the illumination unit 1010 may be initially formed by one or more optical components, i.
  • a directional diffuser 1091 can be used.
  • the medium 104 'without a vessel 104 is arranged in the opening 102".
  • the medium 104 'can also be arranged in a vessel 104 "as described above
  • the transmitted electromagnetic radiation impinges on the coupling-in structure 1030, which is arranged on the second side 1022 of the holding structure 102 '.
  • Coupling structure 1030 couples the radiation portion 101 1 "in the optical waveguide 1031 on.
  • the radiation component 101 1 is guided by the optical waveguide 1031 into the detection unit 101 1 and detected there,
  • optical imaging elements such as
  • optical lenses / converging lenses or light guiding optics 1032 are arranged.
  • the spectral element 1010 and / or the detection unit 101 1 comprise a spectral element to enable the detection of spectrometric data.
  • the spectral element may be arranged between the illumination unit 1010 and the recording device 102.
  • a diffuser 1091 can be arranged or arranged in the beam path between the illumination unit 1010 and the receiving device 102.
  • an optical lens 1091 in an embodiment not shown here in the beam path between the receiving device 102 and the detection unit 101 1 an optical
  • Imaging element 1092 arranged or be arranged.
  • FIG. 7 shows a method 200 for analyzing a medium 104 'using the spectrometric measuring apparatus 100 as a flow chart, the method comprising the steps of arranging 201 the medium 104' in the receiving apparatus
  • the radiation component 101 1 "couples into the optical waveguide 1031 after passing through the medium 104 'and is guided by the optical waveguide 1031 for detection 203 into the detection unit 101 1.
  • the medium 104' can be arranged, for example, in a vessel 104" and into the opening 102 "of the holding structure 102. Detecting 203 of the radiation component 101 1" can be carried out in the detection unit 101 1 as described above. in the
  • a detection signal 203 ' is evaluated, which comprises the spectrometric data, the detection signal 203' resulting from the detection 203 of the radiation component 101 1
  • the spectrometric data can comprise, for example, a spectrum or sections of a spectrum the spectrometric data one Intensity curve, which is plotted over the wavelength, the time or the location, or a course of an electrical signal.
  • Detection signal 203 ' may include, for example, an electrical signal.
  • spectral information can be determined from the detection signal 203 'by means of a computer algorithm and reference data stored in a memory, for example reference spectra or spectral excerpts.
  • the spectral evaluation 204 can take place in the miniature spectrometer 101, in the mobile terminal 108 and / or in an evaluation unit, for example a cloud, arranged externally with respect to the miniature spectrometer 101.
  • the result of the spectral evaluation 204 can be output to a user, for example in the form of an optical, haptic or acoustic output.
  • the result of the spectral evaluation 204 i.
  • a spectral information of the medium 104 ' may be, for example, information about a chemical composition of the medium 104', a presence and / or a concentration of at least one chemical in the medium 104 'or an identification of the medium 104'.
  • Recording device 102 the dimension of the opening 102 "set 2010, wherein the setting 2010 in dependence of a dimension of the medium 104 'or a vessel 104", in which the medium 104' is arranged takes place.
  • the placing 201 of the medium 104 'in the receiving device 102 can be done for example by a user.
  • the user For example, the
  • spectrometric measuring device 100 are at least partially immersed in the medium 104 'or the medium 104' can be introduced into the vessel 104 "and the vessel 104" can be introduced into the receiving device 102 together with the medium.
  • the spectrometric measuring device 100 can be arranged on the vessel 104 "The control of the spectrometric measuring device 100 can take place via a smartphone plugged into the recording device 102 as a control module or a separate control module, which can comprise a screen, for example Start a measurement via the control module and / or adjust the dimension of the opening 102 "as described above to the vessel 104" or the medium 104 '.
  • an app can be installed on the smartphone, wherein the app performs an implementation of the method 200 for analyzing the medium 104 " Use of the spectrometric measuring device 100 can enable. Furthermore, the app may provide clues to the user to assist him in performing the method 200.
  • the following liquids can be examined.
  • the liquids may be disposed in vessels 104 "which may be introduced into the spectrometric measuring device 100, the medium 104 'may be introduced into the spectrometric measuring device 100 or the spectrometric measuring device 100 may be immersed in the liquids.”
  • Vessels 104 are preferably at least partially transparent in the range of the electromagnetic radiation 1010 'used. For example, a ratio of ethanol to methanol in a liquid, origin and / or purity of olive oils, quality and / or ingredients of wines or sparkling wines, sugar content and / or ingredients of fruit juices, or contamination of water can be determined.

Abstract

L'invention concerne un dispositif de mesure spectrométrique (100), qui est conçu pour détecter des données spectrométriques de corps solides et de fluides, comprenant un dispositif de réception (102), qui est conçu pour recevoir un milieu (104') à analyser, un spectromètre miniature (101) étant conçu pour détecter les données spectrométriques du milieu (104'), le spectromètre miniature (101) – comprenant une unité d'éclairage (1010) qui est conçue pour irradier le milieu (104') par un rayonnement électromagnétique (1010') et - comprenant un unité de détection (1011) qui est conçue pour détecter une proportion de rayonnement (1011") du rayonnement électromagnétique (1010') en provenance du milieu (104'), - le spectromètre miniature (101), comprenant l'unité d'éclairage (1010) et l'unité de détection (1011), étant disposé d'un premier côté (1021) du dispositifs de réception (102) et – une structure de couplage (1030) étant disposée au niveau d'un deuxième côté (1022), opposé au premier côté (1021), du dispositif de réception (102) et conçue pour coupler au moins la proportion de rayonnement (1011") du rayonnement électromagnétique (1010') provenant de l'unité d'éclairage (1010) dans un guide d'ondes optiques (1031), le guide d'ondes optiques (1031) étant conçu pour guider la proportion de rayonnement (1011") du deuxième côté (1022) vers l'unité de détection (1011) sur le premier côté (1021).
PCT/EP2018/067743 2017-08-09 2018-07-02 Dispositif de mesure spectrométrique et procédé pour l'analyse d'un milieu utilisant un dispositif de mesure spectrométrique WO2019029907A2 (fr)

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DE102018204837.1A DE102018204837A1 (de) 2017-08-09 2018-03-29 Spektrometrische Messvorrichtung und Verfahren zur Analyse eines Mediums unter Verwendung einer spektrometrischen Messvorrichtung

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Citations (1)

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Publication number Priority date Publication date Assignee Title
US5909280A (en) 1992-01-22 1999-06-01 Maxam, Inc. Method of monolithically fabricating a microspectrometer with integrated detector

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JP4054853B2 (ja) * 2000-10-17 2008-03-05 独立行政法人農業・食品産業技術総合研究機構 近赤外分光法を用いた血液分析法
EP1955033A4 (fr) * 2005-11-30 2012-01-18 Microptix Technologies Llc Systeme de detection integre portatif pour mesures spectrales
WO2010027982A2 (fr) * 2008-09-02 2010-03-11 Microptix Technologies, Llc Mécanisme adaptateur pour dispositif portable de détection spectrale
US10345145B2 (en) * 2014-01-23 2019-07-09 Specturm Perception Llc Miniaturized spectrometer for sensitive and robust laboratory and field use

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909280A (en) 1992-01-22 1999-06-01 Maxam, Inc. Method of monolithically fabricating a microspectrometer with integrated detector

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