CN205483905U - Liquid refracting index optical fiber sensor based on image analysis and resonance of surperficial plasma - Google Patents
Liquid refracting index optical fiber sensor based on image analysis and resonance of surperficial plasma Download PDFInfo
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- CN205483905U CN205483905U CN201620044986.7U CN201620044986U CN205483905U CN 205483905 U CN205483905 U CN 205483905U CN 201620044986 U CN201620044986 U CN 201620044986U CN 205483905 U CN205483905 U CN 205483905U
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Abstract
The utility model provides a liquid refracting index optical fiber sensor based on image analysis and resonance of surperficial plasma which characterized in that: by a single mode fiber, SPR sensor, liquid tank, liquid tank lid, the 2nd single mode fiber, photoswitch, the 3rd single mode fiber, LED light source, CCD camera, reflection grating, beam expander, image memory hard disk, data connecting line and computer organization, connecting a single mode fiber and the 2nd single mode fiber respectively at the both ends of SPR sensor, being connected to the beam expander with another port of a single mode fiber, the beam expander emergent ray is installed reflection grating before the CCD camera on penetrating reflection grating perpendicularly, and the 2nd single mode fiber's another port and the 3rd single mode fiber one end connect respectively in the both sides of photoswitch, and the 3rd single mode fiber other end links to each other with the LED light source, and the image is stored the hard disk and is connected with data connecting line for the computer. The utility model discloses sensitivity height, convenient to use, cost are lower, can be applied to and detect various environment index and physiology health parameter.
Description
Technical field
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration, belongs to technical field of optical fiber sensing.
Background technology
Along with measuring now the development of technology, Fibre Optical Sensor is compared with tradition electric transducer, and owing to having not by electromagnetic interference, highly sensitive, volume is little, lightweight, reusability strong, can imbed the advantages such as various structure and materials and gradually be valued by the people.In recent years, people have been developed that various Fibre Optical Sensor is for the measurement to physical quantitys such as temperature, pressure, strains, in actual applications, liquid solution concentration, the measurement of composition also have a considerable meaning, various are the most gradually proposed by people based on surface plasma resonance optical fiber sensor.A kind of based on graphical analysis and surface plasma body resonant vibration liquid refractivity Fibre Optical Sensor described in this utility model, its ultimate principle is to have different wavelength in variable concentrations solution after surface plasma resonance optical fiber based on light, thus diffraction produces different spectrum.
Surface plasma body resonant vibration (SPR) is a kind of optical physics phenomenon.When Ray Of Light incides prism end face in certain angle, surface plasma-wave will be produced at the interface of prism Yu metallic film (Au or Ag).When surface plasma wave mates with incident ray propagation constant, in causing metal film under the excitation of light, free electron produces resonance, i.e. surface plasma resonance, thus cause transmitted light wave length to change, and the propagation of surface plasma wave is largely relevant with the refractive index of surrounding medium, so surface plasma resonance sensor can be made into high precision refraction meter.The solution of variable concentrations has different refractive indexs, optical fiber will produce wavelength change in various degree by the solution of variable concentrations, the light after having passed through SPR Fibre Optical Sensor is allowed to pass through diffraction grating, the transmitted ray of different wave length will produce different spectrum, rgb pixel point quantity in the image so photographed by CCD camera will occur respective change, by demarcating LED light source light in advance by the rgb pixel point situation of change after various strength solution, just can make one for the liquid refractivity used based on computer and the solution concentration Fibre Optical Sensor of measuring solution concentration.
Utility model content
The purpose of this utility model is to provide a kind of liquid refractivity Fibre Optical Sensor utilizing graphical analysis and surface plasma body resonant vibration that can use on computers.This device can be by realizing the quick measurement to solution concentration to the diffraction spectrum graphical analysis of the LED light source by being in the spr sensor in different solutions concentration.This device has the features such as simple in construction, easily operated, detection is quick.
This utility model is achieved through the following technical solutions:
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration, it is characterised in that: it is made up of the first single-mode fiber (1), spr sensor (2), liquid tank (3), liquid tank lid (4), the second single-mode fiber (5), photoswitch (6), the 3rd single-mode fiber (7), LED light source (8), CCD camera (9), reflecting grating (10), beam expander (11), image storage hard disk (12), data connecting line (13) and computer (14)；nullThe first single-mode fiber (1) and the second single-mode fiber (5) is connected respectively at the two ends of spr sensor (2)，The another port of the first single-mode fiber (1) is connected to beam expander (11)，The emergent ray of beam expander (11) can vertically be mapped in reflecting grating (10)，Reflecting grating (10) is arranged on CCD camera (9) front，The another port of the second single-mode fiber (5) and the 3rd single-mode fiber (7) one end are connected on the both sides of photoswitch (6) respectively，3rd single-mode fiber (7) other end is connected with LED light source (8)，Spr sensor (2) is arranged in liquid tank (7)，Liquid tank lid (8) can Covering Liguid groove (7)，First single-mode fiber (1)、Second single-mode fiber (5)、Photoswitch (6)、3rd single-mode fiber (7)、LED light source (8)、CCD camera (9)、Reflecting grating (10)、Beam expander (11) is all embedded in image storage hard disk (12)，Liquid tank (3)、Liquid tank lid (4) is on image storage hard disk (12) surface，Image storage hard disk (12) is connected with computer (14) data connecting line (13).
Described a kind of based on graphical analysis and surface plasma body resonant vibration liquid refractivity Fibre Optical Sensor, it is characterised in that: the first single-mode fiber (1), spr sensor (2), the second single-mode fiber (5), the core diameter of the 3rd single-mode fiber (7) they are 400 μm.
Described a kind of based on graphical analysis and surface plasma body resonant vibration liquid refractivity Fibre Optical Sensor, it is characterised in that: the fibre core material of the first single-mode fiber (1), spr sensor (2), the second single-mode fiber (5) and the 3rd single-mode fiber (7) is PCS polymer.
Described a kind of based on graphical analysis and surface plasma body resonant vibration liquid refractivity Fibre Optical Sensor, it is characterised in that: the fiber lengths of spr sensor (2) is 10mm, and optical fiber surface is silver-plated, and silver film thickness is 20-100nm.
Described a kind of based on graphical analysis and surface plasma body resonant vibration liquid refractivity Fibre Optical Sensor, it is characterised in that: grating constant 0.67 μm of reflecting grating (10)～0.83 μm.
Described a kind of based on graphical analysis and surface plasma body resonant vibration liquid refractivity Fibre Optical Sensor, it is characterized in that: reflecting grating (10) surface Slygard 184 silicone rubber carries out cured, at room temperature stand 48 hours after solidification, be connected with the first single-mode fiber (1) the most again.
Operation principle of the present utility model is: LED light source (8) emits beam and is first coupled into the 3rd single-mode fiber (7), again through the spr sensor (2) being immersed in solution to be measured after photoswitch (6) and the second single-mode fiber (5), light enters the first single-mode fiber (1) afterwards through spr sensor (2), the emergent ray of the first single-mode fiber (1) can be expanded and be allowed to vertically penetrate and is irradiated in reflecting grating (10) by beam expander (11), the diffraction spectrum image that reflecting grating (10) produces will be shot by CCD camera (9), the diffraction image photographed is transferred to computer (13) by processing the concentration that can be obtained by solution to be measured.Surface plasma body resonant vibration (SPR) is a kind of optical physics phenomenon.When Ray Of Light incides prism end face in certain angle, surface plasma-wave will be produced at the interface of prism Yu metallic film (Au or Ag).When surface plasma wave mates with incident ray propagation constant, in causing metal film under the excitation of light, free electron produces resonance, i.e. surface plasma resonance, thus cause transmitted light wave length to change, and the propagation of surface plasma wave is largely relevant with the refractive index of surrounding medium, so surface plasma resonance sensor can be made into high precision refraction meter.The solution of variable concentrations has different refractive indexs, optical fiber will produce wavelength change in various degree by the solution of variable concentrations, the light after having passed through SPR Fibre Optical Sensor is allowed to pass through diffraction grating, the transmitted ray of different wave length will produce different spectrum, rgb pixel point quantity in the image so photographed by CCD camera will occur respective change, by demarcating LED light source light in advance by the rgb pixel point situation of change after various strength solution, just can make one for the liquid refractivity used based on computer and the solution concentration Fibre Optical Sensor of measuring solution concentration.
The beneficial effects of the utility model are: described a kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration, described sensor integrative installation technology is on image transmitting hard disk, only data need to be transmitted hard disk during use and be connected to computer, open, after lid cleans, solution to be measured instillation groove can be measured solution concentration, close the lid when not using dustproof and waterproof, very easy to use, accuracy of detection is the highest.
Accompanying drawing explanation
Fig. 1 is a kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration of the present utility model；
Fig. 2 is the corresponding gray-scale intensity distribution curve of the diffraction spectrum that mobile phone camera of the present utility model photographs；
Fig. 3 is the glycerin solution concentration recorded of the present utility model and respective indices of refraction relation.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:
See accompanying drawing 1, a kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration, it is characterised in that: it is made up of the first single-mode fiber (1), spr sensor (2), liquid tank (3), liquid tank lid (4), the second single-mode fiber (5), photoswitch (6), the 3rd single-mode fiber (7), LED light source (8), CCD camera (9), reflecting grating (10), beam expander (11), image storage hard disk (12), data connecting line (13) and computer (14)；nullThe first single-mode fiber (1) and the second single-mode fiber (5) is connected respectively at the two ends of spr sensor (2)，The another port of the first single-mode fiber (1) is connected to beam expander (11)，The emergent ray of beam expander (11) can vertically be mapped in reflecting grating (10)，Reflecting grating (10) is arranged on CCD camera (9) front，The another port of the second single-mode fiber (5) and the 3rd single-mode fiber (7) one end are connected on the both sides of photoswitch (6) respectively，3rd single-mode fiber (7) other end is connected with LED light source (8)，Spr sensor (2) is arranged in liquid tank (3)，Liquid tank lid (4) can Covering Liguid groove (3)，First single-mode fiber (1)、Second single-mode fiber (5)、Photoswitch (6)、3rd single-mode fiber (7)、LED light source (8)、CCD camera (9)、Reflecting grating (10)、Beam expander (11) is all embedded in image storage hard disk (12)，Liquid tank (3)、Liquid tank lid (4) is on image storage hard disk (12) surface，Image storage hard disk (12) is connected with computer (14) data connecting line (13).
LED light source (8) emits beam and is first coupled into the 3rd single-mode fiber (7), again through the spr sensor (2) being immersed in solution to be measured after photoswitch (6) and the second single-mode fiber (5), the silver film thickness of spr sensor (2) is 50nm, light enters the first single-mode fiber (1) afterwards through spr sensor (2), the emergent ray of the first single-mode fiber (1) can be expanded and be allowed to vertically penetrate and is irradiated to reflecting grating (10) by beam expander (11), the grating constant of reflecting grating (10) is that the diffraction spectrum image that 0.83 μm reflecting grating (10) produces will be shot by CCD camera (9), the diffraction image photographed is transferred to computer (13) by processing the concentration that can be obtained by solution to be measured.
Claims (6)
1. a liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration, it is characterised in that: it is made up of the first single-mode fiber (1), spr sensor (2), liquid tank (3), liquid tank lid (4), the second single-mode fiber (5), photoswitch (6), the 3rd single-mode fiber (7), LED light source (8), CCD camera (9), reflecting grating (10), beam expander (11), image storage hard disk (12), data connecting line (13) and computer (14)；nullThe first single-mode fiber (1) and the second single-mode fiber (5) is connected respectively at the two ends of spr sensor (2)，The another port of the first single-mode fiber (1) is connected to beam expander (11)，The emergent ray of beam expander (11) can vertically be mapped in reflecting grating (10)，Reflecting grating (10) is arranged on CCD camera (9) front，The another port of the second single-mode fiber (5) and the 3rd single-mode fiber (7) one end are connected on the both sides of photoswitch (6) respectively，3rd single-mode fiber (7) other end is connected with LED light source (8)，Spr sensor (2) is arranged in liquid tank (3)，Liquid tank lid (4) can Covering Liguid groove (3)，First single-mode fiber (1)、Second single-mode fiber (5)、Photoswitch (6)、3rd single-mode fiber (7)、LED light source (8)、CCD camera (9)、Reflecting grating (10)、Beam expander (11) is all embedded in image storage hard disk (12)，Liquid tank (3)、Liquid tank lid (4) is on image storage hard disk (12) surface，Image storage hard disk (12) is connected with computer (14) data connecting line (13).
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration the most according to claim 1, it is characterised in that: the first single-mode fiber (1), spr sensor (2), the second single-mode fiber (5), the core diameter of the 3rd single-mode fiber (7) they are 400 μm.
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration the most according to claim 1, it is characterised in that: the fibre core material of the first single-mode fiber (1), spr sensor (2), the second single-mode fiber (5) and the 3rd single-mode fiber (7) is PCS polymer.
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration the most according to claim 1, it is characterised in that: the fiber lengths of spr sensor (2) is 10mm, and optical fiber surface is silver-plated, and silver film thickness is 20-100nm.
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration the most according to claim 1, it is characterised in that: the grating constant of reflecting grating (10) is 0.67 μm～0.83 μm.
A kind of liquid refractivity Fibre Optical Sensor based on graphical analysis and surface plasma body resonant vibration the most according to claim 1, it is characterized in that: reflecting grating (10) surface Slygard 184 silicone rubber carries out cured, at room temperature stand 48 hours after solidification, be connected with the first single-mode fiber (1) the most again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620044986.7U CN205483905U (en) | 2016-01-13 | 2016-01-13 | Liquid refracting index optical fiber sensor based on image analysis and resonance of surperficial plasma |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620044986.7U CN205483905U (en) | 2016-01-13 | 2016-01-13 | Liquid refracting index optical fiber sensor based on image analysis and resonance of surperficial plasma |
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| CN201620044986.7U Expired - Fee Related CN205483905U (en) | 2016-01-13 | 2016-01-13 | Liquid refracting index optical fiber sensor based on image analysis and resonance of surperficial plasma |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466808A (en) * | 2016-01-13 | 2016-04-06 | 中国计量学院 | Liquid refractive index optical fiber sensor based on image analysis and surface plasma resonance |
| CN106442418A (en) * | 2016-09-06 | 2017-02-22 | 大连理工大学 | Low-cost spectroscopic imaging system based on surface plasma resonance |
-
2016
- 2016-01-13 CN CN201620044986.7U patent/CN205483905U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466808A (en) * | 2016-01-13 | 2016-04-06 | 中国计量学院 | Liquid refractive index optical fiber sensor based on image analysis and surface plasma resonance |
| CN105466808B (en) * | 2016-01-13 | 2018-08-03 | 中国计量学院 | A kind of liquid refractivity fibre optical sensor based on image analysis and surface plasma body resonant vibration |
| CN106442418A (en) * | 2016-09-06 | 2017-02-22 | 大连理工大学 | Low-cost spectroscopic imaging system based on surface plasma resonance |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |