CN105783948B - A kind of FBG sensor system based on the cooperation of more sensing modules - Google Patents
A kind of FBG sensor system based on the cooperation of more sensing modules Download PDFInfo
- Publication number
- CN105783948B CN105783948B CN201610176725.5A CN201610176725A CN105783948B CN 105783948 B CN105783948 B CN 105783948B CN 201610176725 A CN201610176725 A CN 201610176725A CN 105783948 B CN105783948 B CN 105783948B
- Authority
- CN
- China
- Prior art keywords
- sensing
- fbg
- branch road
- photoswitch
- linear array
- 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.)
- Active
Links
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 3
- 230000001953 sensory effect Effects 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 101100254587 Lentinula edodes RPS1 gene Proteins 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a kind of FBG sensor system based on the cooperation of more sensing modules, the sensing system includes：Wideband light source, coupler, 1 × N photoswitches, (FBG) demodulator, computer and sensing network, wherein described sensing network includes multiple FBG sensing modules and multiple 2 × 2 photoswitches, connected between the FBG sensing modules with sensor fibre, the FBG sensing modules are made up of 1 × 2 photoswitch and FBG linear array, and the FBG linear array includes multiple FBG sensors；The FBG linear array includes 2 sensing branch roads, and the front end of 2 sensing branch roads connects 1 × 2 photoswitch respectively, and the end of 2 sensing branch roads connects 2 × 2 photoswitch；The present invention utilizes the cooperation principle being applied in combination with more sensing modules of photoswitch, according to the feedback of sensing network, can solve the problems, such as the multiple faults point in sensor network so that computer receives FBG signals as much as possible, effectively improves the reliability of sensing network.
Description
Technical field
The present invention relates to sensing network system, more particularly to a kind of FBG sensor-based systems based on the cooperation of more sensing modules.
Background technology
Generally, in engineer applied, FBG sensor network is widely used in the fields such as bridge, pipeline, space flight.Practical application
In, if failure can occur for sensor fibre, it will causing the signal of the intact FBG sensor in part in network can not be connect by computer
Receive.In face of increasingly complicated FBG sensor network, improving the reliability of system becomes more and more important.Patent
" a kind of self-healing optical fiber sensor network of Large Copacity " that CN101917230A is proposed will sense branch road and standby biography using photoswitch
It is simply in parallel to feel branch road, solves the problems, such as to sense single trouble point on branch road, can solve due to sense light to a certain extent
Fibre break down caused by FBG can not by COMPUTER DETECTION to the problem of, but can not solve sense branch road on multiple trouble points or
The sensing problem that the standby sensing branch road of person breaks down, that is, need a kind of more effective sensing network design so that sensing network can
It is higher by property.
Therefore, it is necessary to which one kind effectively sensor can solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of FBG sensor-based systems based on the cooperation of more sensing modules to include：Wideband light source,
Coupler, 1 × N photoswitches, (FBG) demodulator, computer and sensing network, wherein, the wideband light source connects the coupler, institute
State coupler and the sensing network connected by 1 × N photoswitches, the sensing network include multiple FBG sensing modules and
Multiple 2 × 2 photoswitches, the FBG sensing modules front end are connected using sensor fibre with 1 × N photoswitches, and the FBG is passed
Sense module is made up of 21 × 2 photoswitches and 2 FBG linear array, 11 × 2 photoswitch and the linear battle arrays of 1 FBG
Row series connection forms series connection beam, and another 11 × 2 photoswitch is connected beam with another 1 FBG linear array；2 series connection beams are simultaneously
Connection forms the FBG sensing modules；The FBG linear array includes 2 sensing branch roads, and series connection is more on every sensing branch road
Individual FBG sensor, the front end of 2 sensing branch roads connect 1 × 2 photoswitch, the end of 2 sensing branch roads respectively
Connect 2 × 2 photoswitch；The light of wideband light source output after the coupler by 1 × N photoswitches after,
A part of light carries out sensing by 1 × N photoswitches and expands number, and reflected light is received by the (FBG) demodulator, sensing data after processing
Analyzed and processed on the computer, if sensor fibre breaks down, the computer does not just receive operative sensor
The data of return, according to sensor feedback information, computer controls the switching of optical switch status, when sensing network breaks down
When, by 1 × 2 photoswitch described in comprehensive adjustment and 2 × 2 photoswitch, other sensory paths are selected, recover the sensor
The sensing function of system.
Preferably, the FBG sensing modules are gone here and there number of sensors and determined by wideband light source wavelength band.
Preferably, the FBG sensing modules include 2 groups of FBG linear array, respectively the first FBG linear array and second
FBG linear array, the first FBG linear array include the first sensing branch road and the second sensing branch road, and the 2nd FBG is linear
Array includes the 3rd sensing branch road and the 4th sensing branch road.
Preferably, being broken down inside the sensing module, the computer sends instruction and controls the photoswitch driving,
Optical switch status is controlled, 2 × 2 photoswitch is kept original state, 2 group of 1 × 2 photoswitch is uninterruptedly described first
Switch between sensing branch road and the second sensing branch road and the 3rd sensing branch road and the 4th sensing branch road.
Preferably, broken down between the sensing module, the computer sends instruction control 2 × 2 photoswitches switching shape
State, by the described first sensing branch road and the 3rd sensing branch road, the second sensing branch road and the 4th sensing branch road are handed over
Fork connection, form path with two group of 1 × 2 photoswitch respectively.
It should be appreciated that foregoing description substantially and follow-up description in detail are exemplary illustration and explanation, should not
As the limitation to the claimed content of the present invention.
Brief description of the drawings
With reference to the accompanying drawing enclosed, the present invention more purpose, function and advantages will pass through the as follows of embodiment of the present invention
Description is illustrated, wherein：
Fig. 1 shows a kind of structural representation of the FBG sensor system based on the cooperation of more sensing modules.
Fig. 2 shows the structural representation of FBG sensing modules.
Fig. 3 shows the normal work schematic diagram of neighboring sensor module.
Fig. 4 shows the principle schematic for each solving failure problems in the sensing module of the FBG sensor-based systems of the present invention.
Cooperation solves the principle schematic of failure problems between Fig. 5 shows the sensing network modules of FBG sensor-based systems.
The FBG sensing module layout optimization figures based on the cooperation of more sensing unit bodies that the present invention that Fig. 6 shows designs.
Embodiment
By reference to one exemplary embodiment, the purpose of the present invention and function and the side for realizing these purposes and function
Method will be illustrated.However, the present invention is not limited to one exemplary embodiment as disclosed below；Can by multi-form come
It is realized.The essence of specification is only to aid in the detail of the various equivalent modifications Integrated Understanding present invention.
Hereinafter, embodiments of the invention will be described with reference to the drawings.In the accompanying drawings, identical reference represents identical
Or similar part, or same or like step.
Fig. 1 shows a kind of structural representation of the FBG sensor system based on the cooperation of more sensing modules.As shown in figure 1,
A kind of FBG sensor system 100 based on the cooperation of more sensing modules, the sensing system include：Wideband light source
110th, coupler 120,1 × N photoswitches 130, (FBG) demodulator 140, computer 150 and sensing network 160,
Wherein, the wideband light source 110 connects the coupler 120, and the coupler 120 passes through 1 × N photoswitches
The 130 connection sensing networks 160, the sensing network 160 include multiple FBG sensing modules 161 and multiple 2 × 2 photoswitches
162, the front end of FBG sensing modules 161 is connected using sensor fibre with 1 × N photoswitches 130, the FBG sensing modules
161 are made up of 21 × 2 photoswitch 161a and 2 FBG linear array 161b, 11 × 2 photoswitch 161a and described 1
FBG linear array 161b connects to form series connection beam, and another 11 × 2 photoswitch 161a and another 1 FBG linear array 161b goes here and there
Connection forms series connection beam, and 2 series connection Shu Binglian form the FBG sensing modules.
The FBG linear array 161b includes 2 sensing branch roads 201, is connected on every sensing branch road 201 multiple
FBG sensor 202, the front end of 2 sensing branch roads 201 connect 1 × 2 photoswitch 161a, 2 sensings branch respectively
The end on road 201 connects 2 × 2 photoswitch 162.
The light that the wideband light source 110 exports after the coupler 120 by 1 × N photoswitches 130 after, one
Part light carries out sensing by 1 × N photoswitches 130 and expands number, and reflected light is received by the (FBG) demodulator 140, sensed after processing
Data analyze and process on the computer 150, if sensor fibre breaks down, the computer does not just receive part
The data that sensor returns, according to sensor feedback information, computer controls the switching of optical switch status, when sensing network 160
When breaking down, by 1 × 2 photoswitch 161a described in comprehensive adjustment and 2 × 2 photoswitch 162, other sensing paths are selected
Footpath, recover the sensing function of the sensing system.
Fig. 2 shows the structural representation of FBG sensing modules.As shown in Fig. 2
The FBG sensing modules 161 of the present invention are made up of 1 × 2 photoswitch 161a and FBG linear array 161b, the linear battle arrays of FBG
Row 161b includes 2 sensing branch roads 201, the respectively first sensing branch road 201a and the second sensing branch road 201b, the first sensing branch
Road 201a and second senses multiple FBG sensors 202 of being connected respectively on branch road 201b, and the number of institute's string sensor 202 is by broadband light
Source wavelength band determines.
Fig. 3 shows the normal work schematic diagram of neighboring sensor module.As shown in figure 3,
Fig. 3 includes 2 groups of FBG linear array 161b, 21 × 2 photoswitch 161a and 1 162,2 groups of 2 × 2 photoswitch
FBG linear array 161b is respectively the first FBG linear array 301 and the 2nd FBG linear array 302, the first FBG linear array
301 include the first sensing branch road 201a and the second sensing branch road 201b, and the 2nd FBG linear array 302 includes the 3rd sensing branch road
The sensing branch road 201d of 201c and the 4th, under normal operating conditions, 21 × 2 photoswitch 161a difference UNICOMs first sense branch roads
The sensing branch road 201c of 201a and the 3rd, 2 × 2 photoswitches 162 are in state one, that is, are respectively communicated with the first sensing branch road 201a and the
Two sensing branch road 201b, the 3rd sensing branch road 201c and the 4th sensing branch road 201d.
Fig. 4 shows the principle schematic for each solving failure problems in the sensing module of the FBG sensor-based systems of the present invention.
As shown in figure 4,
Dotted line is sensing operating path in figure, × it is trouble point, figure includes 4 sensing branch roads 201, and respectively first passes
Feel the sensing branch roads of branch road 201a and second 201b, the 3rd sensing branch road 201c and the 4th sensing branch road 201d.Every sensing branch road
4 FBG sensors of series connection on 201, first senses 4 FBG sensors 202 of being connected on branch road 201a, respectively FBG11
(202a), FBG12 (202b), FBG13 (202c) and FBG14 (202d)；4 FBG sensings of series connection on second sensing branch road 201b
Device 202, respectively FBG21 (202e), FBG22 (202f), FBG23 (202g) and FBG24 (202h)；3rd sensing branch road 201c
4 FBG sensors 202 of upper series connection, respectively FBG31 (202i), FBG32 (202j), FBG33 (202k) and FBG34 (202l)；
4 FBG sensors 202 of series connection on 4th sensing branch road 201d, respectively FBG41 (202m), FBG42 (202n), FBG43
(202o) and FBG44 (202p).When being broken down inside FBG sensing modules 161, failure dotted state such as Fig. 4 in branch road 201 is sensed
Shown in, in the case where two 1 × 2 photoswitch 161a on off states are constant, system only has FBG11 (202a), FBG31
(202i), FBG32 (202j), FBG33 (202k), FBG34 (202l) and FBG44 (202p) totally 6 202 normal works of sensor
Make, functional reliability only has the 75% of original system, the data that now computer returns according to (FBG) demodulator, it can be determined that go out sensing
Device has part to be detected by computer 150, and then computer 150 sends instruction control photoswitch driving, and then controls and open
Off status so that 2 × 2 photoswitches 162 keep original state constant, and two group of 1 × 2 photoswitch 161a passes first incessantly
It is switched fast between the sensing branch roads of sensing branch road 201c and the 4th of sensing branch road 201b and the 3rd of sense branch road 201a and second 201d, this
Sample can causes COMPUTER DETECTION to improve 25% to whole FBG signals, sensing reliability.
Coordination handling failure state, when FBG sensing branch roads there are multiple trouble points, can not by single module
Solve, now need to cooperate with each other between more sensing modules to be sensed.Specific solution we by embodiment below
In elaborate.
Cooperation solves the principle schematic of failure problems between Fig. 5 shows the sensing network modules of FBG sensor-based systems.Such as
Shown in Fig. 5,
Dotted line is sensing operating path in figure, × it is trouble point, figure includes 4 sensing branch roads 201, and respectively first passes
Feel the sensing branch roads of branch road 201a and second 201b, the 3rd sensing branch road 201c and the 4th sensing branch road 201d.Every sensing branch road
4 FBG sensors of series connection on 201, first senses 4 FBG sensors 202 of being connected on branch road 201a, respectively FBG11
(202a), FBG12 (202b), FBG13 (202c) and FBG14 (202d)；4 FBG sensings of series connection on second sensing branch road 201b
Device 202, respectively FBG21 (202e), FBG22 (202f), FBG23 (202g) and FBG24 (202h)；3rd sensing branch road 201c
4 FBG sensors 202 of upper series connection, respectively FBG31 (202i), FBG32 (202j), FBG33 (202k) and FBG34 (202l)；
4 FBG sensors 202 of series connection on 4th sensing branch road 201d, respectively FBG41 (202m), FBG42 (202n), FBG43
(202o) and FBG44 (202p).When malfunction as shown in Figure 5 when, if all optical switch status are held in FBG Sensor Networks
In the case of network normal work, be only able to detect FBG11 (202a), FBG31 (202i), FBG32 (202j), FBG33 (202k),
FBG34 (202l), FBG41 (202m), FBG42 (202n), FBG43 (202o) and FBG44 (202p) totally 9 sensors 202, pass
Sensing system reliability only has the 56.25% of original system, it can be seen that reliability is very poor, if being now in certainly merely with module
Reason, then again to detect sensor FBG21 (202e), sensor-based system reliability is the 62.5% of original system, although improving more
6.25%, but reliability is still very poor.The FBG sensor-based systems that the more sensing modules designed by the present invention cooperate, can be complete
Normal work is not influenceed by this malfunction, if all FBG sensors 202 are intact, computer can detect entirely
Portion's FBG signals, reliability will improve nearly half level, and high degree improves system reliability.
Specific work process is that computer 150 judges that working condition is shown in Fig. 5, so according to the feedback of sensing network
Send instructions down the switching state of 2 × 2 photoswitch of control 162 afterwards, by the first sensing branch road 201a and the 3rd sensing branch road 201c, second
The sensing branch road 201d interconnections of branch road 201b and the 4th are sensed, path are formed with two group of 1 × 2 photoswitch 161a respectively, not
Change under two group of 1 × 2 photoswitch 161a state, i.e., the sensing branch road 201a and the 3rd of selection first sensings branch road 201c respectively, this
When computer capacity detect FBG11 (202a), FBG12 (202b), FBG13 (202c), FBG14 (202d), FBG31 (202i),
FBG32 (202j), FBG33 (202k) and FBG34 (202l) totally 8 sensors, then change two group of 1 × 2 photoswitch simultaneously
161a states, that is, the second sensing branch road 201b and the 4th sensing branch road 201d are selected, now computer capacity detects other 8 biographies
Sensor, i.e. FBG21 (202e), FBG22 (202f), FBG23 (202g), FBG24 (202h), FBG41 (202m), FBG42
(202n), FBG43 (202o) and FBG44 (202p), by constantly switching two group of 1 × 2 this mode of photoswitch 161a states, just
Whole FBG signals can be detected so that sensor-based system is relatively reliable.
The FBG sensing module layout optimization figures based on the cooperation of more sensing unit bodies that the present invention that Fig. 6 shows designs.Such as figure
Shown in 6,
The FBG sensor system based on the cooperation of more sensing modules of the present invention includes multiple FBG sensing modules 161 and more
Individual 2 × 2 photoswitch 162, FBG sensing module quantity here is unrestricted, can optimize according to demand, and effective improve passes
Feel the reliability of network.
Advantages of the present invention at least that：
The present invention utilizes the cooperation principle being applied in combination with more sensing modules of photoswitch, according to the feedback of sensing network,
Can solve the problems, such as the multiple faults point in sensor network so that computer receives FBG signals as much as possible, effectively improves
The reliability of sensing network.
With reference to the explanation of the invention disclosed here and practice, other embodiment of the invention is for those skilled in the art
It all will be readily apparent and understand.Illustrate and embodiment is to be considered only as exemplary, of the invention true scope and purport is equal
It is defined in the claims.
Claims (5)
1. a kind of FBG sensor system based on the cooperation of more sensing modules, the sensing system include：Wideband light source, coupling
Device, 1 × N photoswitches, (FBG) demodulator, computer and sensing network,
Wherein, the wideband light source connects the coupler, and the coupler connects the sensing by 1 × N photoswitches
Network, the sensing network include multiple FBG sensing modules and multiple 2 × 2 photoswitches, and the FBG sensing modules front end uses
Sensor fibre is connected with 1 × N photoswitches, and the FBG sensing modules are by 21 × 2 photoswitches and 2 FBG linear array groups
Into, wherein, 11 × 2 photoswitch and 1 FBG linear array connect to form series connection beam, another 11 × 2 photoswitch and another 1 FBG
Linear array connects to form series connection beam；2 series connection Shu Binglian form the FBG sensing modules；The FBG linear array bag
2 sensing branch roads are included, multiple FBG sensors of being connected on every sensing branch road, the front end of 2 sensing branch roads connects respectively
1 × 2 photoswitch is connect, the end of 2 sensing branch roads connects 2 × 2 photoswitch；
The light of wideband light source output after the coupler by 1 × N photoswitches after, described in a part of light passes through
1 × N photoswitches carry out sensing and expanded, and reflected light is received by the (FBG) demodulator, and sensing data divides on the computer after processing
Analysis is handled, if sensor fibre breaks down, the computer does not just receive the data of operative sensor return, according to biography
Sensor feedback information, computer controls the switching of optical switch status, when sensing network breaks down, by described in comprehensive adjustment
1 × 2 photoswitch and 2 × 2 photoswitch, select other sensory paths, recover the sensing function of the sensing system.
2. the FBG sensor system according to claim 1 based on the cooperation of more sensing modules, wherein, the FBG senses mould
Block is gone here and there number of sensors and determined by wideband light source wavelength band.
3. the FBG sensor system according to claim 1 based on the cooperation of more sensing modules, wherein, the FBG senses mould
Block includes 2 groups of FBG linear array, respectively the first FBG linear array and the 2nd FBG linear array, the linear battle arrays of the first FBG
Row include the first sensing branch road and the second sensing branch road, and the 2nd FBG linear array includes the 3rd sensing branch road and the 4th and passed
Feel branch road.
4. the FBG sensor system according to claim 3 based on the cooperation of more sensing modules, wherein, the sensing module
Inside is broken down, and the computer sends instruction and controls the photoswitch driving, controls optical switch status, makes 2 × 2 light
Switch keeps original state, and 2 group of 1 × 2 photoswitch is uninterruptedly in the described first sensing branch road and the second sensing branch road
Switch between the described 3rd sensing branch road and the 4th sensing branch road.
5. the FBG sensor system according to claim 3 based on the cooperation of more sensing modules, wherein, the sensing module
Between break down, the computer sends instruction 2 × 2 photoswitch switching states of control, described first will sense branch road and described
3rd sensing branch road, it is described second sensing branch road and it is described 4th sensing branch road interconnection, respectively with two group of 1 × 2 photoswitch
Form path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176725.5A CN105783948B (en) | 2016-03-25 | 2016-03-25 | A kind of FBG sensor system based on the cooperation of more sensing modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176725.5A CN105783948B (en) | 2016-03-25 | 2016-03-25 | A kind of FBG sensor system based on the cooperation of more sensing modules |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105783948A CN105783948A (en) | 2016-07-20 |
| CN105783948B true CN105783948B (en) | 2018-02-06 |
Family
ID=56391649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610176725.5A Active CN105783948B (en) | 2016-03-25 | 2016-03-25 | A kind of FBG sensor system based on the cooperation of more sensing modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105783948B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447061A (en) * | 2021-06-26 | 2021-09-28 | 山东航天电子技术研究所 | Micro sensing implantation type monitoring system and method for spacecraft composite material |
| CN114509113A (en) * | 2022-02-15 | 2022-05-17 | 金陵科技学院 | High-reliability fiber grating sensing network model |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5747793A (en) * | 1995-10-04 | 1998-05-05 | Advanced Fiber Optechs, Inc. | Variable light source compensated optical fiber sensing system |
| JP2005315584A (en) * | 2004-04-26 | 2005-11-10 | Kyocera Corp | Fbg sensing system |
| JP2005326326A (en) * | 2004-05-17 | 2005-11-24 | National Institute Of Advanced Industrial & Technology | Strain measuring and ultrasound/ae detecting apparatus using optical fiber sensor |
| CN101832794A (en) * | 2010-03-30 | 2010-09-15 | 浙江大学 | Fiber Bragg grating and fiber Raman composite sensing network and realizing method thereof |
| CN101867506A (en) * | 2010-05-06 | 2010-10-20 | 天津大学 | Realizing device of large-capacitance self-healing optical fiber sensing network based on light spectrum type optical fiber sensor and realizing method |
| CN101917230A (en) * | 2010-08-13 | 2010-12-15 | 天津大学 | Large-capacity self-healing optical fiber sensor network |
| CN103604446A (en) * | 2013-11-04 | 2014-02-26 | 清华大学 | Multi-channel fiber bragg grating absolute wavelength demodulation system based on single detector and method thereof |
| CN103983286A (en) * | 2014-05-20 | 2014-08-13 | 天津大学 | Multi-parameter large-capacity optical fiber passive sensing networking system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120139264A (en) * | 2011-06-17 | 2012-12-27 | 한국전자통신연구원 | Apparatus for sensing pressure using optical waveguide and method thereof |
-
2016
- 2016-03-25 CN CN201610176725.5A patent/CN105783948B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5747793A (en) * | 1995-10-04 | 1998-05-05 | Advanced Fiber Optechs, Inc. | Variable light source compensated optical fiber sensing system |
| JP2005315584A (en) * | 2004-04-26 | 2005-11-10 | Kyocera Corp | Fbg sensing system |
| JP2005326326A (en) * | 2004-05-17 | 2005-11-24 | National Institute Of Advanced Industrial & Technology | Strain measuring and ultrasound/ae detecting apparatus using optical fiber sensor |
| CN101832794A (en) * | 2010-03-30 | 2010-09-15 | 浙江大学 | Fiber Bragg grating and fiber Raman composite sensing network and realizing method thereof |
| CN101867506A (en) * | 2010-05-06 | 2010-10-20 | 天津大学 | Realizing device of large-capacitance self-healing optical fiber sensing network based on light spectrum type optical fiber sensor and realizing method |
| CN101917230A (en) * | 2010-08-13 | 2010-12-15 | 天津大学 | Large-capacity self-healing optical fiber sensor network |
| CN103604446A (en) * | 2013-11-04 | 2014-02-26 | 清华大学 | Multi-channel fiber bragg grating absolute wavelength demodulation system based on single detector and method thereof |
| CN103983286A (en) * | 2014-05-20 | 2014-08-13 | 天津大学 | Multi-parameter large-capacity optical fiber passive sensing networking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105783948A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8023819B2 (en) | Method and apparatus for network fault detection and protection switching using optical switches with integrated power detectors | |
| CN101656041A (en) | LED screen control system featuring diplonema redundancy fault-tolerance and application method thereof | |
| CN105783948B (en) | A kind of FBG sensor system based on the cooperation of more sensing modules | |
| JPH10511250A (en) | Optical communication system | |
| CN108462549B (en) | Protection group is superimposed reverse method, control device and optical communication equipment | |
| CN102064885A (en) | Method and device for rapid protection switching of passive optical network (PON) ports in any slot position in 10 Gbit/s Ethernet PON (10G-EPON) system | |
| US20160203930A1 (en) | Power feed line switching circuit, branching device, submarine cable system, and power feed line switching method | |
| KR100385116B1 (en) | Packet processing method using multiple fault tolerant network arrangement | |
| US20120170925A1 (en) | Protection device and protection method for optical network | |
| CN101995320A (en) | Method, device and equipment for detecting fault of underwater equipment | |
| US20050238361A1 (en) | Optical transponder with equipment failure protection | |
| US7447430B2 (en) | Optical cross connect apparatus and optical transmission system | |
| US6396602B1 (en) | Optical switching unit, particularly for switching to standby components in optical transmission systems | |
| US20020071154A1 (en) | Shared optical ring protection in a multi-fiber ring | |
| CN102265640B (en) | Optical line transmission protection system and method | |
| US8774620B2 (en) | Optical transmission system and optical transmission method | |
| CN106712840B (en) | A kind of implementation method and device of PON protection system | |
| CN105783954B (en) | A kind of high redundancy FBG sensing modules | |
| CN107241141A (en) | A kind of driving chip, optical module, the switching method of optical module and PON equipment | |
| JP5228503B2 (en) | Optical transmission line connection state monitoring method and system | |
| JPH0964817A (en) | Optical submarine branching device and method for switching its transmission line | |
| US20070274715A1 (en) | Node for an Optical Communication Network | |
| CN102652399A (en) | Redundant backup method and system for optical interface circuit board and optical interface circuit boards thereof | |
| JP2005269112A (en) | Optical protection apparatus | |
| CN104426598A (en) | SFP protection switching device and SFP protection switching method for OLTs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |