EP3126817A1 - Sensorkopf und dessen verwendung sowie unterwasserfahrzeug - Google Patents
Sensorkopf und dessen verwendung sowie unterwasserfahrzeugInfo
- Publication number
- EP3126817A1 EP3126817A1 EP15714397.5A EP15714397A EP3126817A1 EP 3126817 A1 EP3126817 A1 EP 3126817A1 EP 15714397 A EP15714397 A EP 15714397A EP 3126817 A1 EP3126817 A1 EP 3126817A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sample
- sensor head
- head according
- underwater vehicle
- spectrometer
- 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- Withdrawn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
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 238000001228 spectrum Methods 0.000 claims abstract description 11
- 238000001237 Raman spectrum Methods 0.000 claims abstract description 9
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 7
- 238000004416 surface enhanced Raman spectroscopy Methods 0.000 claims description 6
- 239000002360 explosive Substances 0.000 claims description 4
- 231100000331 toxic Toxicity 0.000 claims description 4
- 230000002588 toxic effect Effects 0.000 claims description 4
- 239000002923 metal particle Substances 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000000523 sample Substances 0.000 description 69
- 239000013049 sediment Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000013535 sea water Substances 0.000 description 5
- 238000004611 spectroscopical analysis Methods 0.000 description 5
- 239000000383 hazardous chemical Substances 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003841 Raman measurement Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000004847 absorption spectroscopy Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
- G01N21/658—Raman scattering enhancement Raman, e.g. surface plasmons
-
- 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
- G01N33/24—Earth materials
-
- 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
- G01N2201/02—Mechanical
- G01N2201/021—Special mounting in general
- G01N2201/0218—Submersible, submarine
-
- 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
- G01N33/18—Water
- G01N33/1886—Water using probes, e.g. submersible probes, buoys
Definitions
- the invention relates to a sensor head for an underwater vehicle having a sample chamber with a light source associated with the sample chamber and a spectrometer associated with the sample chamber and associated optics, so that a spectrum, in particular Raman spectrum and / or IR spectrum of a sample in the sample space can be determined is, wherein the sample space has a feeder, as well as the use of a sensor head and an underwater vehicle.
- a sensor head for an underwater vehicle with a sample chamber, with a light source associated with the sample chamber and a spectrometer associated with the sample chamber and associated optics, so that a spectrum, in particular Raman spectrum and / or IR spectrum, a Sample can be determined in the rehearsal room, wherein the sample chamber has a feed device, wherein the feed device has a sampling element and a sample feed line.
- a sample can advantageously be drawn and analyzed underwater at the point of interest. It eliminates a sampling and a separate analysis in a laboratory. Also, many samples can be drawn and analyzed over a large area and quickly.
- a "sensor head” is, in particular, a component which can be flange-mounted on and / or in an unmanned underwater vehicle and / or can be integrated, with data from the sensor head being able to be transmitted to the underwater vehicle or be transferred in reverse. Control and regulating signals can also be exchanged via such a line.
- the sensor head may for example be attached to a linkage, which is guided to the location of sampling under water.
- such a sensor head can also be installed in buoys, which then in particular for the purpose of
- the sensor head may also include metal detectors or a sonar.
- a camera system may be included to analyze the environment.
- sample chamber is a transparent area in which the sample to be analyzed can be brought in.
- optical analysis takes place in the sample chamber.
- the "light source” associated with the sample chamber is in particular a monochromatic light source, such as a laser, when a Raman spectrum is to be determined
- a tunable light source is selected which tunes a wavelength of 800 nm to 1100 nm can.
- UV or visual spectroscopy can also be carried out, for example, in the form of absorption spectroscopy. Also in this type of spectroscopy, a tunable light source is used.
- the monochromatic light source used for Raman spectroscopy a laser in the UV range at 266nm, in the optical range of 514, 5nm or in the IR range of 785nm can be used.
- the light source may have an optical component for focusing the light source into the sample chamber.
- the "spectrometer” with the associated “optics” is arranged so that a light signal in the sample chamber of the associated light source can be fed via the optics to the spectrometer.
- the spectrometer determines in particular the light intensity as a function of the wavelength or wavenumber.
- the spectrometer can be set to detect either the anti-Stokes or the Stokes side.
- the spectrometer can be adjustable so that the entire spectrum is recorded around the excitation wavelength of the light source.
- the use of the anti-Stokes signals is of particular advantage because it can neglect the fluorine essence of the water.
- the Raman spectra can be determined in particular in a 90 ° geometry.
- the light source can be divided into two light beams in a reference beam and a measuring beam and the light detector, which is then referred to as spectrometer, fed.
- Vibration spectroscopy called. At this Spectroscopy, substances dissolved in water are either excited to vibrate or an existing vibration is de-energized so that, for example, scattering light has a slightly different frequency / wavelength / wavenumber. Because of the molecules involved, the Raman spectra vary widely, leaving each molecule with a unique fingerprint.
- the sensor head can have a computer with a database in which corresponding pattern spectra have been stored in advance.
- the measured spectra can be compared with the spectral database and thus certain substances can be detected on site. For example, the comparison can be made by a correlation.
- the "feeding device” has a “sampling element” and a “sample feed line.”
- the sampling element spills a sample, which is located outside the sensor head, into the sensor head
- the sampling element may be a pump such as a suction pump
- the sample supply line may be a tube or a tube through which the aspirated sample material is introduced into the sample chamber Have lattice that certain solids do not get into the sensor head.
- the sensor head is designed essentially encapsulated, so that in the case that the sensor head is under water, the spectrometer is substantially dry.
- the capsules can also be made only for the spectrometer itself or another separate capsule may be provided for the spectrometer.
- the sensor head may have an adjusting device, which is assigned to the feed device, so that the sampling element and / or the sample supply line is changed locally.
- the adjusting device is designed as a winch.
- a winch is generally a device for raising and lowering and operates essentially on the principle of the wave wheel combined with a lever. Winch includes racks, winches, spindle winches, hydraulic jacks, loading winches or winches, which are also called winches.
- the sampling element may be a controllable pump and / or the sample supply line may be an elastic and / or spiral tube. In particular, if the hose is arranged on the pump, by lowering the pump by means of the wind, a sample can also be drawn locally from the sensor head.
- the sensor head has an optical waveguide, wherein in particular the optical waveguide also has the optics, and the optical waveguide is arranged such that a light signal from the sample chamber is conducted via the optical waveguide to the spectrometer.
- the sample supply line can have a switchable opening.
- the sensor head and the sampling element are designed such that the sampling element can close and open the sample feed line.
- the sampling element is thus not only used to pull a sample or to bring a sample, but has a dual function in which it closes the sample feed line.
- the opening can be done in particular by the operation of the winch.
- the sample chamber can have a sample outlet, so that a sample can be brought out of the sample chamber.
- this sample outlet may also be a tube which is guided outside the sensor head. Another tube or hollow body may form the sample outlet.
- rinsing can take place in that the sensor head is moved out of the range of the measurement and the sampling element flushes "uncontaminated seawater" into the sample space, the uncontaminated seawater being discharged into the sample space being discharged via the sample outlet Sampling ensures that no contamination falsifies the measurement result.
- the sensor head has a controllable or controllable drive, so that a stable sensor head position can be realized when taking a sample.
- the sampling element is a pump
- this may cause the pump to act as a drive.
- This results in the sensor head being moved out of its sampling position.
- the drive of the sensor head or a Underwater vehicle counteract this movement.
- the sensor head for example, use sonar data, which determine the distance to the seabed or there may be position sensors, which detect any drift due to the pump operation. This drifting can be counteracted just by the controllable and / or controllable drive. In the case of rules, feedback is given in contrast to the control.
- a metallic surface can be arranged in the sample space or the sample space can have metal particles, so that an SERS measurement can be realized.
- SERS stands for Surface Enhanced Raman Spectroscopy.
- metal tips in particular aluminum, gold or silver surface plasmons, which lead to an amplification of the Raman effect.
- the focus of the light source is focused on a rough metal surface, since usable peaks form on rough surfaces for SERS. This achieves excellent results.
- the sensor head is set up in such a way that after sampling and transferring the samples into the sample space, the sample space is rinsed.
- the sample space is rinsed.
- the sensor head can be removed from the sampling point and flushed with "clear sea or seawater.”
- the sample feed line and the sample outlet can be used for rinsing through.
- the object is achieved by an underwater vehicle which has a sensor head described above.
- underwater vehicles can include AUV s 's (Autonomous Underwater Vehicles) or ROV' (Remotely Operated Vehicles) in particular.
- AUV s 's Autonomous Underwater Vehicles
- ROV' Remotely Operated Vehicles
- unmanned underwater companions such as Glider or mobile devices that are operated by a diver or buoys and those that have their own drive, fall under the terminology underwater vehicle.
- the underwater vehicle has a controllable and / or controllable drive, so that when taking a sample a stable
- sensor head and underwater vehicle can share a common computer, via which both the adjustment of the spectra with the spectral database and any control and regulating mechanisms realized become.
- multiple control devices with multiple computers can be distributed to the sensor head and underwater vehicle, in particular, the communication is via a bus system.
- the object is achieved by the use of a previously described sensor head or by the use of a previously described vehicle for detecting toxic or hazardous substances, in particular explosives.
- these substances are detected on the sediment or are dissolved in the water itself.
- Figure 1 is a highly schematic representation of a
- Figure 2 is a highly schematic representation of a
- a sensor head 101 comprises a spectrometer 103, an associated optics 104 and an associated control computer 129.
- the control computer 129 is a database with the Raman spectra of several dissolved toxic and hazardous substances deposited.
- the optics 104 of the spectrometer 103 is directed into the interior of the transparent sample space 107.
- the light source 105 is presently a narrow band diode laser with a wavelength of 785 nm.
- the narrow-band diode laser 105 additionally has a focusing optics, which is directed through the transparent sample space 107 (also called sample container).
- the optical focus of the diode laser 105 coincides with the focus of the optics 104 of the spectrometer 103.
- a 90 ° measurement geometry is given.
- a spiral inlet hose 109 is flanged.
- the inlet hose 109 is designed spirally, so that the hose can be tracked accordingly with a change in length.
- a submersible pump 115 At the end of the inlet hose 109, a submersible pump 115 is arranged. In a closed position, the submersible pump 115 closes an inlet opening 111. At the upper end of the submersible pump 115, a cable 121 and a cable drum 119 are arranged. The cable 121 and the cable drum 119 form the winch 117.
- a direction of rotation 123 can be impressed. With a clockwise rotation, the cable 121 is extended and the submersible pump 115 is discharged in the open direction 125, so that the inlet opening 111 opens.
- the inlet hose 109 remains fixed. If the pump has been lowered slightly, sediment or seawater can be pumped into the inlet opening 111 when the pump is running. By further actuating the pump 115, the inlet hose 109 is then filled so that a sample is brought into the sample space 107 becomes. After the sample space is filled, the winch 117 is again actuated, the cable drum 119 being driven counterclockwise by the motor. This shortens the cable 121 and the submersible pump 115 in turn closes the inlet opening 111.
- the laser 105 is controlled and in the sample space 107, a laser focus is generated.
- the resulting scattered light is conducted by means of the optics 104 in the spectrometer 103.
- the CCD camera located in the spectrometer detects the intensity of the different wavelengths and the determined spectrum is matched in the control computer 129 with the stored in the database spectra, so as to defect dangerous substances.
- the measurement for example the Raman measurement, takes place during the pumping process and thus during the passage of the sample water.
- the present sensor head 101 is connected to an ROV 127.
- the ROV is in turn connected via a fiber optic cable and a power cable to a surface vehicle and the data obtained is transmitted to the vessel.
- the ROV 127 with the sensor head 101 is very close to the seabed or river bottom, it comes with sampling by means of the submersible pump 115 that moved due to the suction of the sensor head and thus the ROV against the open direction 125 becomes .
- the ROV has a sonar and position sensors and thus detects the deviation due to the displacement.
- the control computer 129 determines a control signal to the drive (not shown) of the ROV's transmitted, which thus counteracts the upward movement, so that the sensor head 101 is held substantially stable over the seabed based on the measured change in position.
- the inlet hose is coupled to the submersible pump 115.
- the spiral inlet hose 119 follows the submersible pump 115.
- sediment or water can be brought directly into the inlet hose 109 via the submersible pump 115.
- the spectrometer 203 may be arranged in a pressure vessel 251.
- the spectrometer has a fiber optic cable 206, at the end of an optic 204 is arranged.
- the fiber optic cable 206 is sealed through the pressure vessel 251.
- the outlet 213 and the inlet via the submersible pump 215 are arranged on the underside of the sensor head 201. If, in turn, the submersible pump 215 sediment and water, which is brought into the sample space 207 via the inlet hose 209, then leads to an outflow at the outlet 213. This can be minimized interference that spend the sensor head 201 from its location.
- this sensor head 201 may also include a winch 217 with a cable drum 219 and a cable 212. In turn, it is provided via the winch 217 to drain the submersible pump 215. Also in this case is realized by means of a laser 205, which is presently designed as a UV laser, which emits a narrowband monochromatic light signal at 266nm, in a 90 ° geometry.
- a metal plate with individual applied metal tips is arranged in the sample space 207 at a 45 ° angle, so that scattered light is conducted into the optic 204.
- a SERS measurement is realized.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014104693.5A DE102014104693A1 (de) | 2014-04-02 | 2014-04-02 | Sensorkopf und dessen Verwendung sowie Unterwasserfahrzeug |
| PCT/DE2015/100054 WO2015149749A1 (de) | 2014-04-02 | 2015-02-10 | Sensorkopf und dessen verwendung sowie unterwasserfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3126817A1 true EP3126817A1 (de) | 2017-02-08 |
Family
ID=52813855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15714397.5A Withdrawn EP3126817A1 (de) | 2014-04-02 | 2015-02-10 | Sensorkopf und dessen verwendung sowie unterwasserfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3126817A1 (de) |
| DE (1) | DE102014104693A1 (de) |
| WO (1) | WO2015149749A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2309974C3 (de) * | 1973-02-28 | 1981-10-08 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Vorrichtung zur geophysikalischen in-situ-Analayse von Erz-Konkretionen |
| US4394573A (en) * | 1980-12-15 | 1983-07-19 | Conoco Inc. | Method and apparatus for underwater detection of hydrocarbons |
| JPS60123749A (ja) * | 1983-12-07 | 1985-07-02 | Takashi Kimoto | 水採取装置 |
| JPH03169796A (ja) * | 1989-11-29 | 1991-07-23 | Kansai Electric Power Co Inc:The | 水質測定用ロボット装置 |
| US8760657B2 (en) * | 2001-04-11 | 2014-06-24 | Gas Sensing Technology Corp | In-situ detection and analysis of methane in coal bed methane formations with spectrometers |
| WO2004025261A2 (en) * | 2002-09-16 | 2004-03-25 | Welldog, Inc. | Method and apparatus detecting and analyzing oil and gas compositions using dual sensors |
| US7437248B2 (en) * | 2006-07-03 | 2008-10-14 | Zakaria Sihalla | Water quality sampling system |
| EP3572801A1 (de) * | 2009-08-25 | 2019-11-27 | Hach Lange GmbH | Prozess-analysegerät |
| DE102010011207A1 (de) * | 2010-03-09 | 2011-09-15 | B. Braun Melsungen Ag | Vorrichtung zum Schneiden von im Verbund vorliegenden miteinander verbundenen Kunststofferzeugnissen für den medizinischen Bereich |
| US20160018339A1 (en) * | 2013-04-02 | 2016-01-21 | Halliburton Energy Services, Inc. | Autonomous remote sensor for determining a property of a fluid in a body of water |
-
2014
- 2014-04-02 DE DE102014104693.5A patent/DE102014104693A1/de not_active Withdrawn
-
2015
- 2015-02-10 WO PCT/DE2015/100054 patent/WO2015149749A1/de not_active Ceased
- 2015-02-10 EP EP15714397.5A patent/EP3126817A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015149749A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015149749A1 (de) | 2015-10-08 |
| DE102014104693A1 (de) | 2015-10-08 |
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