CN108303405A - A kind of transmission-type Multi-example optical fiber sensing system based on mobile device - Google Patents
A kind of transmission-type Multi-example optical fiber sensing system based on mobile device Download PDFInfo
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- CN108303405A CN108303405A CN201810038356.2A CN201810038356A CN108303405A CN 108303405 A CN108303405 A CN 108303405A CN 201810038356 A CN201810038356 A CN 201810038356A CN 108303405 A CN108303405 A CN 108303405A
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- optical fiber
- mobile device
- light source
- filtration module
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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
- G01N21/62—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
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
-
- 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
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6439—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" with indicators, stains, dyes, tags, labels, marks
Abstract
The invention discloses a kind of transmission-type Multi-example optical fiber sensing system based on mobile device, including：There is two-port and the sensing section between two-port, sensing section there is exposed core area, exposed core area coupling to have several quantum dots for U-shaped optical fiber, laser light source, filtration module, optical fiber connector and mobile device, U-shaped optical fiber；The two-port of U-shaped optical fiber is connect with laser light source and filtration module respectively by optical fiber connector；Filtration module has lens barrel, and the second optical fiber connector and more bandpass filters are installed with successively in lens barrel；Mobile device has the camera and message processing module for capableing of shoot coloured image, and camera by the hot spot after filtration module to shooting to form image information；Message processing module carries out color segmentation to image information and gray count obtains the half-tone information of the fluorescence signal in above-mentioned image information, to obtain the signal strength for representing various measured matters, finally calculates the content of various measured matters.
Description
Technical field
The present invention relates to environmental testings, are passed more particularly to a kind of transmission-type Multi-example optical fiber based on mobile device
Sensing system.
Background technology
Serious with pollution, environment constantly deteriorates, the detection of metal ion and other harmful substances in environment
Increasingly paid attention to by people, the market demand of environment measuring product increasingly increases.Currently, being used for detecting in the market golden in environment
The detection device for belonging to ion and other harmful substances has ultraviolet specrophotometer, fluophotometer, all kinds of polarographs, chromatography
Instrument, mass spectrograph etc., most of this quasi-instrument needs are taken laboratory after sampling and are detected, expensive, and need profession
Detection technique personnel identify, it is long to obtain the result period；It is ground in addition there are component environment detection vehicle and based on electrochemical method
The environment detector of hair, this kind of product volume is larger, and can only detect a kind of harmful substance, and testing result accuracy is low.Thus
As it can be seen that the equipment of traditional environment measuring cannot meet carries out instant, accurate testing requirements to environment, therefore, exploitation is a kind of
Good portability, at low cost, acquisition result is accurate rapidly and it is particularly important to detect the detecting system of many kinds of substance simultaneously.
In view of this, the present inventor furthers investigate the field involved by the above problem, there is this case generation then.
Invention content
The object of the present invention is to provide a kind of transmission-type Multi-example optical fiber sensing system based on mobile device, the system obtain
It takes result rapid accurate and many kinds of substance can be detected simultaneously and take into account good portability, at low cost again.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of transmission-type Multi-example optical fiber sensing system based on mobile device, including：
U-shaped optical fiber, above-mentioned U-shaped optical fiber have two-port and the sensing section between two-port, the portion of above-mentioned sensing section
Divide or whole cores area exposes, above-mentioned exposed core area coupling there are several quantum dots；
Laser light source, above-mentioned laser light source are provided with the first optical fiber connector, and above-mentioned laser light source passes through above-mentioned first light
Fiber connector is connect with the first port of above-mentioned U-shaped optical fiber, and above-mentioned laser light source has wavelength blue-violet；
Filtration module, above-mentioned filtration module include that lens barrel, the second optical fiber connector and band-pass wavelength correspond to above-mentioned quantum
More bandpass filters of the launch wavelength of point, the second port of above-mentioned U-shaped optical fiber by above-mentioned second optical fiber connector with it is above-mentioned
Filtration module connects, and above-mentioned second optical fiber connector and above-mentioned more bandpass filters are installed with successively along light path in above-mentioned lens barrel；
Mobile device, above-mentioned mobile device have the camera and message processing module that can shoot color, above-mentioned camera shooting
Head forms image information to being shot by the hot spot after above-mentioned filtration module；Above- mentioned information processing module is to above-mentioned image
Information carries out color segmentation and gray count, the half-tone information of the fluorescence signal in above-mentioned image information is obtained, to obtain generation
The signal strength of the various measured matters of table, finally calculates the content of various measured matters.
Further, there are above-mentioned quantum dot multiple types, the quantum dot of variant type to have different launch wavelengths.
Further, above-mentioned first optical fiber connector and above-mentioned second optical fiber connector be all made of standardized detachable FC,
Any one of SMA905, ST, SC optical fiber connector.
Further, above-mentioned U-shaped optical fiber is single-mode quartz optical fibers or multimode silica fibre.
Further, the radial dimension of above-mentioned camera is not more than the radial dimension of above-mentioned lens barrel.
Further, above-mentioned laser light source and above-mentioned filtration module are set in a shell, and above-mentioned shell, which has, supplies above-mentioned U
The stretching of type optical fiber or the optic fibre hole stretched into position the location structure of above-mentioned laser light source and above-mentioned filtration module and supply above-mentioned lens barrel
Stretch out the objective lens barrel aperture outside above-mentioned shell, and the snap-in structure of the above-mentioned mobile device of connection.
Using above-mentioned technical proposal, a kind of transmission-type Multi-example optical fiber sensing system based on mobile device of the invention,
The fluorescent marker to tested substance is carried out by a variety of quantum points, compared with other fluorescent markers, quantum dot has wide
Excitation spectrum and narrow emission spectrum can excite a variety of quantum dots, so as to reach to a variety of samples simultaneously with a kind of light source
The detection of product, and the fluorescence lifetime of quantum dot is long, the service life of device is long；In the U-shaped optical fiber of U-typed structure as detector
And sensor information, it is compact-sized and to the loss of signal small, strong antijamming capability, compared to the detection of other heavy metal contaminants
Equipment, this system can be deep into tiny gap environment and be detected；This system is based on mobile platform, small, be convenient for
It carries, at low cost, easy to operate, detection information upload easy to operation, and by way of image procossing, it is accurately fast to obtain result
Speed.
Description of the drawings
Fig. 1 is the operation principle schematic diagram of the present invention；
Fig. 2 is fluorescence signal acquisition and detection process block diagram in the present invention；
Fig. 3 is the structural schematic diagram of the present invention.
Label declaration：
1 first optical fiber connector 11 of laser light source
12 U-shaped optical fiber 2 of exciting light
21 fluorescence signal 211 of quantum dot
Sense 23 filtration module 3 of section
31 second optical fiber connector 32 of lens barrel
33 mobile device 4 of more bandpass filters
41 image information 411 of camera
42 shell 5 of message processing module
Specific implementation mode
In order to further explain the technical solution of the present invention, being carried out in the following with reference to the drawings and specific embodiments to the present invention detailed
It is thin to illustrate.
A kind of transmission-type Multi-example optical fiber sensing system based on mobile device of the present invention as shown in Figs. 1-3, including swashs
Radiant 1, U-shaped optical fiber 2, quantum dot 21, filtration module 3 and mobile device 4, laser light source 1 connect U-shaped optical fiber 2, quantum dot 21
It is set on U-shaped optical fiber 2, U-shaped optical fiber 2 is connect with filtration module 3.
Laser light source 1 has wavelength blue-violet, specific in the semiconductor laser of ultraviolet band or to be consolidated using wavelength
Body laser provides exciting light 12 for 21 detecting material of quantum dot.
U-shaped optical fiber 2 has two-port and the sensing section 22 between two-port, some or all of sensing section 22 core area
It exposes, above-mentioned exposed core area coupling has several quantum dots 21；The both ends of U-shaped optical fiber 2 are located at the same side, form U-typed
Structure.
It is exposed it is preferred that some or all of section 22 core area will be sensed using chemical corrosion method, and it is exposed to sense section 22
Core area has the quantum dot 21 with different emission of respective numbers according to the coupling of the type of detected substance, forms sensing and visits
Head.
The present invention is coupled the quantum dot 21 for having different emission on an optical fiber.For mark each metal ion species and
The quantum dot of the measured matters such as harmful substance will produce fluorescence signal by excitation, and quantum dot has wide excitation
The excitation to different emission quantum dot may be implemented using same light source in spectrum and narrow emission spectrum.
Tested substance and phase in a kind of transmission-type Multi-example optical fiber sensing system based on mobile device of the present invention
After the quantum dot 21 answered combines, different specific fluorescence signals 211 is generated after the excitation of exciting light 12, can be marked respectively
Corresponding tested substance.
The excitation light output end of laser light source 1 is provided with the first optical fiber connector 11, and laser light source 1 is connected by the first optical fiber
It connects device 11 and the first port of U-shaped optical fiber 2 is of coupled connections；Exciting light 12 injects U-shaped optical fiber 2 from the first port of U-shaped optical fiber 2
It is interior, and be sensor information with U-shaped optical fiber 2, exciting light 12 is transferred to the second port of U-shaped optical fiber 2.
Preferably, the excitation light output end of laser light source 1 is provided with tail optical fiber, passes through 11 coupling of tail optical fiber and the first optical fiber connector
Close connection.
Filtration module 3 has lens barrel 31, the second optical fiber connector 32 and more bandpass filters 33, in lens barrel 31 along light path according to
Secondary fixed second optical fiber connector 32 and more bandpass filters 33, second port and the filtration module 3 of U-shaped optical fiber 2 pass through second
Optical fiber connector 32 is of coupled connections, then is excited by exciting light 12 after tested substance is combined with corresponding quantum dot 21 and generate spy
Fixed fluorescence signal 211 and exciting light 12 itself is transmitted to through the second optical fiber connector 32 from the second port of U-shaped optical fiber 2
Filtration module 3.
More bandpass filters 33 have splendid transmitance, and the band-pass wavelength of more bandpass filters 33 and each quantum dot 21
Launch wavelength it is corresponding；So after exciting light 12 and fluorescence signal 211 are transmitted to more bandpass filters 33,12 meeting of exciting light
It is blocked and fluorescence signal 211 then by more bandpass filters 33 and can form hot spot.
Mobile device 4 has the camera 41 and message processing module 42 that can shoot color, camera 41 more to passing through
Hot spot shooting after bandpass filter 33, forms image information 411；Have in message processing module 42 and is based on Android platform
Well known image processing algorithm, color segmentation and gray count can be carried out to image information 411 by this image processing algorithm
The half-tone information of the representative fluorescence signal 211 in image information 411 is obtained, to show that the signal for representing various measured matters is strong
Degree, finally calculates the content of various measured matters.
When detection, U-shaped optical fiber 2 is placed in detected liquid environment so that tested substance and corresponding quantum first
After point 21 combines.
Then exciting light 12 is injected from the first port of U-shaped optical fiber 2 in U-shaped optical fiber 2 by the first optical fiber connector 11, is
Quantum dot 21 provides exciting light 12, and tested substance generates specific by the excitation of exciting light 12 after being combined with corresponding quantum dot 21
Fluorescence signal 211, which can mark the tested substances such as each metal ion species and harmful substance；Meanwhile U
Type optical fiber 2 itself is also the sensor information that optical signal transmits, and can the fluorescence signal 211 of quantum dot 21 be transmitted to U-shaped optical fiber 2
Second port, and more bandpass filters 33 are transmitted to by the second optical fiber connector 32；More bandpass filters 33 can protected
Exciting light 12 is filtered out while the intensity of barrier signal light is without substantially losing, only fluorescence signal 211 can be filtered by more band logicals
Mating plate 33 simultaneously forms hot spot.
It finally uses the camera 41 in mobile device 4 to being shot by the hot spot after filtration module 3, forms image information
411, then image information 411 is handled and analyzed by message processing module 42, finally calculate various tested substances
Content.
As a preferred embodiment of the present invention：
Laser light source 1 is using centre wavelength in the semiconductor laser of 405nm, and luminous power is about 20mW, and tail optical fiber is preferably adopted
It is respectively 105 μm and 125 μm of multimode silica fibre with core diameter and cladding diameter.
U-shaped optical fiber 2 is single-mode quartz optical fibers or multimode silica fibre, wherein it is preferred that using core diameter and cladding diameter point
Multimode silica fibre that Wei be 105 μm and 125 μm；The a variety of quantum of coupling are segmented on U-shaped optical fiber 2 using the method for chemical modification
Point 21；First optical fiber connector 11 and above-mentioned second optical fiber connector 32 be all made of FC, SMA905 including standardized detachable,
Any one of ST, SC optical fiber connector.
Filtration module uses small size structure, and lens barrel 31 and more bandpass filters 33 are all made of 12.5mm standard components.
The radial dimension of camera 41 is not more than the radial dimension of lens barrel 31, so that camera 41 can extend into lens barrel 31
It is interior, it is not interfered by external environment when ensureing shooting image；Mobile device 4 using with colour imagery shot 41 smart mobile phone or
Person's tablet computer.
Another preferred embodiment as the present invention：
Also there is this sensor-based system a shell 5, laser light source 1 and filtration module 3 to be set in shell 5, and shell 5 has fixed
Position laser light source 1 and the conventional location structure of filtration module 3 stretch out or two optic fibre holes stretching into and for lens barrel for U-shaped optical fiber 2
31 stretch out the objective lens barrel aperture outside shell 5, and the conventional snap-in structure of connection mobile device 4.
Shell 5 is fastened in mobile device 4 when use, and camera 41 is made to be aligned in lens barrel 31 through filtration module 3
One end corresponding to hot spot afterwards stretches into the U-shaped optical fiber 2 outside shell 5 in detected liquid environment, opens laser light source 1, leads to
Cross the shooting of camera 41 and the processing analysis of message processing module 42, you can to the metal ion and nuisance in fluid to be measured
The content of the tested substances such as matter is tested.
Embodiment 1：
A kind of while and quick optical fiber sensing system for detecting tri- kinds of ions of Hg solution 2+ and Ag2+ and Cd2+：
Wavelength is in the semiconductor laser of 405nm centered on laser light source 1, and luminous power is about 20mW, and tail optical fiber is that fibre core is straight
The multimode fibre that diameter and cladding diameter are 105 μm and 125 μm.
It is 105 μm and 125 μm of multimode fibre that U-shaped optical fiber 2, which is to core diameter and cladding diameter, and sensing section 22 is passed through
The exposed fibre core of hydrofluoric acid chemical attack, and upper three kinds of quantum 21 are modified by way of chemical bonds, three kinds of quantum dots 21 divide
It Biao Ji not tri- kinds of ions of Hg2+ and Ag2+ and Cd2+.
First optical fiber connector 11 and above-mentioned second optical fiber connector 32 use FC, SMA905, ST, SC of standardized detachable
Any one of optical fiber connector, camera lens 32 and more bandpass filters 33 are all made of 12.5mm standard components, mostly band in filtration module 3
Pass filter 33 uses three bandpass filters, can eliminate the exciting light 12 of 405nm, and allow three kinds of fluorescence signals 211 through at
As being a hot spot.
Mobile device 4 uses the mobile phone based on Android platform, it is connect with shell 5 by conventional snap-in structure, and
Using the camera 41 on mobile phone to being shot by the hot spot after filtration module 3, image information 411 is formed, is recycled at information
Reason module 42 carries out pretreatment and color segmentation to the image information 411 taken and luminous intensity calculates, to calculate three kinds
The content of ion；This method can realize quick, convenient, the accurate detection to three kinds of ions.
The product form and style of above-described embodiment and attached drawing and the non-limiting present invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as the patent category for not departing from the present invention.
Claims (6)
1. a kind of transmission-type Multi-example optical fiber sensing system based on mobile device, which is characterized in that including：
U-shaped optical fiber, above-mentioned U-shaped optical fiber have two-port and the sensing section between two-port, the part of above-mentioned sensing section or
Whole core areas expose, and above-mentioned exposed core area coupling has several quantum dots；
The first optical fiber connector is arranged in laser light source, above-mentioned laser light source, and above-mentioned laser light source is connected by above-mentioned first optical fiber
Device is connect with the first port of above-mentioned U-shaped optical fiber, and above-mentioned laser light source has wavelength blue-violet；
Filtration module, above-mentioned filtration module include that lens barrel, the second optical fiber connector and band-pass wavelength correspond to above-mentioned quantum dot
The second port of more bandpass filters of launch wavelength, above-mentioned U-shaped optical fiber passes through above-mentioned second optical fiber connector and above-mentioned optical filtering
Module connects, and above-mentioned second optical fiber connector and above-mentioned more bandpass filters are installed with successively along light path in above-mentioned lens barrel；
Mobile device, above-mentioned mobile device have the camera and message processing module that can shoot color, above-mentioned camera pair
It is shot by the hot spot after above-mentioned filtration module, forms image information；Above- mentioned information processing module is to above-mentioned image information
Color segmentation and gray count are carried out, the half-tone information of the fluorescence signal in above-mentioned image information is obtained, is represented respectively to obtain
The signal strength of kind measured matter, finally calculates the content of various measured matters.
2. a kind of transmission-type Multi-example optical fiber sensing system based on mobile device according to claim 1, feature exist
In：There are above-mentioned quantum dot multiple types, the quantum dot of variant type to have different launch wavelengths.
3. a kind of transmission-type Multi-example optical fiber sensing system based on mobile device according to claim 1, feature exist
In：Above-mentioned first optical fiber connector and above-mentioned second optical fiber connector are all made of in FC, SMA905, ST, SC of standardized detachable
Any optical fiber connector.
4. a kind of transmission-type Multi-example optical fiber sensing system based on mobile device according to claim 1, feature exist
In：Above-mentioned U-shaped optical fiber is single-mode quartz optical fibers or multimode silica fibre.
5. a kind of transmission-type Multi-example optical fiber sensing system based on mobile device according to claim 1, feature exist
In：The radial dimension of above-mentioned camera is not more than the radial dimension of above-mentioned lens barrel.
6. a kind of transmission-type Multi-example optical fiber sensing system based on mobile device according to claim 1 or 5, feature
It is：Above-mentioned laser light source and above-mentioned filtration module are set in a shell, above-mentioned shell have stretched out for above-mentioned U-shaped optical fiber or
The location structure and the above-mentioned lens barrel of confession of the optic fibre hole, the above-mentioned laser light source of positioning and above-mentioned filtration module that stretch into stretch out above-mentioned shell
Outer objective lens barrel aperture, and connect the snap-in structure of above-mentioned mobile device.
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| CN201810038356.2A CN108303405A (en) | 2018-01-16 | 2018-01-16 | A kind of transmission-type Multi-example optical fiber sensing system based on mobile device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208187A (en) * | 2019-04-29 | 2019-09-06 | 吉林亚泰中科医疗器械工程技术研究院股份有限公司 | A kind of device replaced for optical filter and optical fiber automatic synchronization |
| CN114413944A (en) * | 2022-03-29 | 2022-04-29 | 安徽省国盛量子科技有限公司 | Distributed optical fiber sensor based on quantum dots |
| CN114459512A (en) * | 2022-04-12 | 2022-05-10 | 安徽省国盛量子科技有限公司 | Distributed quantum sensor based on pulse light and sensing microstructure manufacturing method |
| CN114563022A (en) * | 2022-05-03 | 2022-05-31 | 安徽省国盛量子科技有限公司 | Manufacturing method of quantum sensing microstructure based on evanescent wave and sensor |
| CN114894225A (en) * | 2022-07-13 | 2022-08-12 | 安徽省国盛量子科技有限公司 | Distributed optical fiber sensor based on optical fiber microbend technology and manufacturing method |
-
2018
- 2018-01-16 CN CN201810038356.2A patent/CN108303405A/en active Pending
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| 徐元哲 等: "基于荧光图像的快速检测藻类浓度方法的研究", 《东北电力大学学报》 * |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208187A (en) * | 2019-04-29 | 2019-09-06 | 吉林亚泰中科医疗器械工程技术研究院股份有限公司 | A kind of device replaced for optical filter and optical fiber automatic synchronization |
| CN110208187B (en) * | 2019-04-29 | 2024-03-19 | 吉林亚泰中科医疗器械工程技术研究院股份有限公司 | Device for automatically and synchronously replacing optical filter and optical fiber |
| CN114413944A (en) * | 2022-03-29 | 2022-04-29 | 安徽省国盛量子科技有限公司 | Distributed optical fiber sensor based on quantum dots |
| CN114413944B (en) * | 2022-03-29 | 2022-06-21 | 安徽省国盛量子科技有限公司 | Distributed optical fiber sensor based on quantum dots |
| CN114459512A (en) * | 2022-04-12 | 2022-05-10 | 安徽省国盛量子科技有限公司 | Distributed quantum sensor based on pulse light and sensing microstructure manufacturing method |
| CN114459512B (en) * | 2022-04-12 | 2022-06-17 | 安徽省国盛量子科技有限公司 | Distributed quantum sensor based on pulse light and sensing microstructure manufacturing method |
| CN114563022A (en) * | 2022-05-03 | 2022-05-31 | 安徽省国盛量子科技有限公司 | Manufacturing method of quantum sensing microstructure based on evanescent wave and sensor |
| CN114563022B (en) * | 2022-05-03 | 2022-07-22 | 安徽省国盛量子科技有限公司 | Manufacturing method of quantum sensing microstructure based on evanescent wave and sensor |
| CN114894225A (en) * | 2022-07-13 | 2022-08-12 | 安徽省国盛量子科技有限公司 | Distributed optical fiber sensor based on optical fiber microbend technology and manufacturing method |
| CN114894225B (en) * | 2022-07-13 | 2022-09-30 | 安徽省国盛量子科技有限公司 | Distributed optical fiber sensor based on optical fiber microbend technology and manufacturing method |
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Application publication date: 20180720 |