CN102291180A - Method for designing extensible triangular optical fiber sensing network with high reliability - Google Patents
Method for designing extensible triangular optical fiber sensing network with high reliability Download PDFInfo
- Publication number
- CN102291180A CN102291180A CN201110174265A CN201110174265A CN102291180A CN 102291180 A CN102291180 A CN 102291180A CN 201110174265 A CN201110174265 A CN 201110174265A CN 201110174265 A CN201110174265 A CN 201110174265A CN 102291180 A CN102291180 A CN 102291180A
- Authority
- CN
- China
- Prior art keywords
- triangle
- optical fiber
- switch
- sensor network
- fiber sensor
- 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.)
- Granted
Links
Images
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention relates to a method for designing an extensible triangular optical fiber sensing network with high reliability, which comprises the central triangular design of the triangular optical fiber sensing network, and the first extension and the (i-1)th extension of the sensing network, wherein the triangular optical fiber sensing network with i inner and outer layers of triangles and the extensibility of i is obtained after the (i-1)th extension. In order to symmetrize the triangular optical fiber sensing network and simplify a structure, 2<i-1> optical fiber sensors are arranged on each side of the ith layer of triangles, and the whole sensing network has 2<s-1> optical fiber sensors in total; and in inner layer triangles, a slave switch is arranged at each vertex of the triangle of each layer with a total of 3(i-1) slave switches, and at the outermost layer triangle, one master switch is arranged at one of the vertexes. The scheme of the triangular optical fiber sensing network disclosed by the invention has the advantages of simple structure, fine extensibility, large scale after the extension, less required optical switches and structure self-similarity maintenance after the extension, can simplify the inquiring procedure and the demodulating procedure of optical signals, has powerful self-recovery functions, still maintains the normal operation of the network even if a plurality of fault points occur, and has high network reliability.
Description
Technical field
The invention belongs to the optical-fiber intelligent field of sensing technologies, be specifically related to the extendible triangle optical fiber sensor network of a kind of high reliability, can realize large-scale optical fiber sensor network and have self-healing function.
Background technology
In recent years, optical fiber sensor network has received increasing concern.Optical fiber sensor network utilizes multiplex technique to form a sensing network many passive optical fiber sensors, collects sensing and is transmitted in one.It has the sensor network incomparable advantage of other type, as anti-electromagnetic interference, adverse environment resistant, highly sensitive, can realize advantages such as measuring multiple parameters, be widely used in aspects such as environmental monitoring, disaster alarm, smart material and structure health monitoring.
Along with popularizing of using, people are also more and more higher to the requirement of optical fiber sensor network, as the scale of wishing the sensing net is enough big to be applicable to the monitoring of this class large scale structure safety of bridge, tunnel or mansion, also require simultaneously the reliability height of sensing net, so that break down or when suffering malicious sabotage, the sensing net can work on to a certain extent." fiber grating sensing system " that patent CN200610130121.3 proposes provides a kind of multistage, network type fiber grating sensing system, this system is the strained situation of measures ambient temperature and monitoring object simultaneously, have real-time monitoring, advantage that test specification is big, be fit to the occasion of large scale measurement.But this system does not have self-healing function, and reliability is low." having the optical fiber grating sensing network that survivability guarantees " that patent CN200710019914.2 proposes adopts fan-shaped sub-network level model, can guarantee that network is in a place or many places link generation inefficacy, transducer in the network can operate as normal, and a plurality of fan-shaped subnets can be cascaded up and constitute large-scale sensing network model, but the node number in this network is many, the node structure more complicated.
Summary of the invention
The present invention seeks to solve that existing extensive sensing net does not have self-healing function, reliability is low or have that node number in the network is many, the problem of node structure more complicated, the extendible triangle optical fiber sensor network of a kind of high reliability method for designing is provided.
The present invention has designed a kind of leg-of-mutton optical fiber sensor network, utilizes the characteristics of optical switch and structure itself to make optical fiber sensor network have self-healing function, has improved the reliability of network.And this structure is easy to realize expansion, makes it to be more suitable for measurement extensive in the reality, multiple spot.
The design procedure of the extendible triangle optical fiber sensor network of high reliability provided by the invention method for designing is as follows:
1st, the central cam shape of triangle optical fiber sensor network design
At first design an equilateral triangle, 1 Fibre Optical Sensor of on leg-of-mutton each bar limit, all connecting at least, place, a summit in triangle that is outermost layer triangle connects one 2 * 2 optical switch, be called main switch, the self-healing function that is used to transmit the light signal between light source, transducer and the demodulating system and realizes optical fiber sensor network, defining this structure is that divergence is 1 triangle optical fiber sensor network;
2nd, the 1st of the triangle optical fiber sensor network the expansion
Make the external triangle of the central cam shape of the 1st step design, make former leg-of-mutton three summits lay respectively at the mid point on external Atria bar limit, obtain other 3 triangles with central cam shape congruence like this, constitute inside and outside two-layer triangle, 3 triangles of new expansion respectively with the shared limit of former triangle, every limit 1 Fibre Optical Sensor of connecting at least on two limits in addition, connect one 2 * 2 optical switch on leg-of-mutton one of them summit of external big triangle that is outermost layer, be called main switch, internal layer respectively connects one 2 * 2 optical switch on leg-of-mutton each summit, in order to distinguish, be called from switch, be mainly used in the self-healing function that realizes the triangle optical fiber sensor network, and to define this structure be that divergence is 2 triangle optical fiber sensor network;
3rd, of the triangle optical fiber sensor network
Inferior expansion
According to the extended method in the 2nd step, expand one by one;
When the diabolo optical fiber sensor network carries out
During inferior expansion, obtain inside and outside amounting to
Layer triangle, i wherein〉2, leg-of-mutton every the limit of in each layer each 1 Fibre Optical Sensor of connecting at least, connect one 2 * 2 optical switch on leg-of-mutton one of them summit of outermost layer, be called main switch, each internal layer also respectively connects one 2 * 2 optical switch on leg-of-mutton each summit, in order to distinguish, be called from switch, be mainly used in the self-healing function that realizes the triangle optical fiber sensor network, and to define this structure be that divergence is the triangle optical fiber sensor network of i.
In order to make triangle optical fiber sensor network symmetry with simplified structure, 1 Fibre Optical Sensor of connecting on each limit of the central cam shape of the 1st step design; The divergence of the 2nd step design is on every limit of the 2nd layer of triangle of 2 triangle optical fiber sensor network 2 Fibre Optical Sensors to be arranged; The 3rd goes on foot total i layer triangle in the triangle optical fiber sensor network that the divergence that designs is i, and i layer triangle has on every limit
Individual Fibre Optical Sensor, whole triangle optical fiber sensor network is total
Individual transducer; In the internal layer triangle, every layer of leg-of-mutton each place, summit all has 1 from switch, and be total
Individual from switch; There is a main switch at one of them place, summit at the outermost layer triangle.
Described 2 * 2 optical switch has two states: intersection attitude and parallel state, according to the needs decision optical switch state of each 2 * 2 optical switch position and light path; Each 2 * 2 optical switch state is by Artificial Control.
Advantage of the present invention and good effect:
(1) the triangle optical fiber sensor network scenario-frame of the present invention's proposition is simple, and scalability is good, and expansion back structure keeps self-similarity, can simplify the inquiry process and the demodulating process of light signal.
(2) switching based on the optical switch state can realize self-healing function, even can keep the network operate as normal, the network reliability height under the situation of a plurality of fault points generation.
(3) scale is big after this extension of network, and with respect to a fairly large number of Fibre Optical Sensor, needed optical switch is less, so cost is lower.
Description of drawings
Fig. 1 is that divergence is 1 triangle optical fiber sensor network structural representation,
Among the figure, the 1st, main switch (2 * 2 optical switch), 2,3,4 all is Fibre Optical Sensor.
Fig. 2 is that divergence is 2 triangle optical fiber sensor network structural representation,
Among the figure, the 1st, main switch (2 * 2 optical switch), 2 ~ 10 all is Fibre Optical Sensor, 11,12,13 all is from switch (2 * 2 optical switch).
Fig. 3 is that divergence is 3 triangle optical fiber sensor network structural representation,
1 is main switch (2 * 2 optical switch) among the figure, and 11 ~ 16 all is that 2 ~ 10,17 ~ 28 all is Fibre Optical Sensor from switch (2 * 2 optical switch).
Fig. 4 is the two states of 2 * 2 optical switches, and wherein (a) (b) is parallel state for intersecting attitude.
Fig. 5 is the schematic diagram of self-healing property when a tie point fault is arranged in the network, wherein (a) is the state and the signal transmission path schematic diagram of all switches when not having the fault point in the network, (b) be state and signal transmission path schematic diagram, the state of each optical switch that drawn among the figure and the corresponding transmission path of all switches during the secondary acquisition signal after breaking down in the network.
Fig. 6 is the schematic diagram of self-healing property when two tie point faults are arranged in the network, wherein (a) is the state and the signal transmission path schematic diagram of all switches when not having the fault point in the network, (b) be the state and the signal transmission path schematic diagram of all switches during the secondary acquisition signal after breaking down in the network, (c) be the state and the signal transmission path schematic diagram of all switches during three acquired signal after breaking down in the network, (d) be state and signal transmission path schematic diagram, the state of each optical switch that drawn among the figure and the corresponding transmission path of all switches during four acquired signal after breaking down in the network.
Embodiment
The design procedure of the extendible triangle optical fiber sensor network of high reliability provided by the invention method for designing is as follows:
1st, the central cam shape of triangle optical fiber sensor network design
As shown in Figure 1, it is an equilateral triangle, our Fibre Optical Sensor of on its each bar limit, all connecting, and one of them place, summit is connected with one 2 * 2 optical switch at triangle, we are called its main switch, are used to the self-healing function of transmitting the light signal between light source, transducer and the demodulating system and realizing this scheme.If this structure is the triangle optical fiber sensor network of divergence i=1.
2nd, the 1st of the triangle optical fiber sensor network the expansion
The external triangle of doing above-mentioned central cam shape makes former leg-of-mutton three summits lay respectively at the mid point on external Atria bar limit, and we obtain other 3 triangles with former Fig. 1 congruence like this, constitute inside and outside two-layer triangle, as shown in Figure 2.3 triangles of this new expansion respectively with the shared limit of former triangle, every limit 1 Fibre Optical Sensor of connecting at least on two limits in addition, but for symmetry with simplified structure, the number that our series connection equates with the every limit of former triangle is 1 transducer.
On external big leg-of-mutton one of them summit one 2 * 2 optical switch is arranged, be called main switch, the main switch among former Fig. 1 removes.Internal layer respectively connects one 2 * 2 optical switch on leg-of-mutton each summit, and in order to distinguish, we are called from switch, are mainly used in the realization self-healing function.The triangle optical fiber sensor network of we degree of being expanded i=2 like this.
Find out easily, during i=2, see total two-layer triangle on the whole, 1 Fibre Optical Sensor is arranged on every limit of internal layer triangle, outer external triangle has 2 Fibre Optical Sensors on every limit, and one has 9 transducers, and 3 from switch, 1 main switch.
3rd, of the triangle optical fiber sensor network
Inferior expansion
According to the extended method in the 2nd step, expand one by one, can unlimitedly expand in theory;
Make an external triangle again with same method of the 2nd step on the basis of Fig. 2, we just obtain new 3 triangles with Fig. 2 congruence, inside and outside 3 layers of triangle altogether, as shown in Figure 3.The triangle of these 3 new expansions respectively with the shared limit of the triangle of Fig. 2, every limit 1 Fibre Optical Sensor of connecting at least on two limits in addition, but for symmetry with simplified structure, the number that our series connection equates with the every limit of Fig. 2 triangle is 2 transducers.On leg-of-mutton one of them summit of outermost layer, one 2 * 2 optical switch is arranged, is called main switch, respectively have on each leg-of-mutton each summit of internal layer one 2 * 2 from switch, and the main switch among Fig. 2 is removed.We obtain the triangle sensing net of i=3 like this.
At this moment, see on the whole to have three layers of triangle that 4 Fibre Optical Sensors are arranged on every limit of outermost layer triangle, 2 transducers are arranged on every limit, intermediate layer, innermost layer is 1, and total has 21 transducers, and 6 from switch, 1 main switch.
Can push away thus, divergence is i(
Inferior expansion) triangle sensing network has i layer triangle, and the outermost layer triangle has on every limit
Individual Fibre Optical Sensor, total
Individual transducer; Internal layer respectively is connected with 1 from switch on leg-of-mutton each summit, and is total
Individual from switch; There is a main switch at one of them place, summit at the outermost layer triangle.
One 2 * 2 optical switch has two states: intersection attitude and parallel state, as shown in Figure 4.When breaking down in the network, lose with regard to the heat transfer agent that has some transducers, we can for these transducers are selected other signal transmission path, thereby regain the heat transfer agent of these transducers by changing each state from switch and main switch.The simplest realizing method is exactly the state of Artificial Control optical switch at present.
Below with Fiber Bragg Grating FBG (FBG) as Fibre Optical Sensor, optical switch is an example by the situation of artificial control, with reference to accompanying drawing, specifies the realization of the self-healing property of divergence i=2 scheme.
Make an equilateral triangle earlier as central cam shape, our Fiber Bragg Grating FBG of all connecting on its each bar limit is FBG, do the 1st expansion of triangle optical fiber sensor network then: the external triangle of doing above-mentioned central cam shape makes three summits of central cam shape lay respectively at the mid point on external Atria bar limit, we obtain other 3 triangles with central cam shape congruence like this, constitute inside and outside two-layer triangle.3 triangles of this new expansion respectively with the shared limit of former triangle, every limit 1 FBG that connects at least on two limits in addition, but for symmetry with simplified structure, the number that our series connection equates with the every limit of former triangle is 1 FBG.
On external big leg-of-mutton one of them summit one 2 * 2 optical switch is arranged, be called main switch, be used to the self-healing function of transmitting the light signal between light source, transducer and the demodulating system and realizing this scheme.Respectively connect one 2 * 2 optical switch on each summit of central cam shape, in order to distinguish, we are called from switch, are mainly used in the realization self-healing function.The triangle optical fiber sensor network of we degree of being expanded i=2 like this.As shown in Figure 5, FBG1 ~ FBG9 be bragg wavelength FBG inequality as transducer, SW1 is a main switch, SW2 ~ SW4 is from switch.Light source enters triangular net from main switch, be subjected to stress or temperature modulation after, the light that carries heat transfer agent is through the FBG reflection and enter demodulating system by main switch once more and carry out demodulation.
The initial condition of master and slave switch is drawn in Fig. 5 (a), promptly main switch SW1, all be parallel state from switch SW 2 and SW3, SW4 is for intersecting attitude.This also is the state of all switches when not having the fault point in the network, the light signal fullpath that this moment, sensing was used is: the light that light source sends enters network by SW1, pass through SW1, FBG7, SW3, FBG4, FBG5, SW2, FBG6, FBG8, SW4, FBG3, SW3, FBG1, SW2, FBG2, SW4, FBG9 successively, the light signal that is carried heat transfer agent after temperature or the stress field modulation is reflected by these FBG, enter demodulating system by SW1 again, demodulating system should be able to collect the reflectance spectrum of 9 FBG.When having an optical fiber to connect the fault point in the network, be without loss of generality, if the fault point appears between FBG1 and the SW2, as shown in Figure 5, at this moment can only arrive the FBG1 place according to the aforesaid paths light signal, so FBG2 and FBG9 can not realize sensing function, the demodulating system place can only collect 7 reflectance spectrums, the reflectance spectrum that does not have FBG2 and FBG9, we can judge the position (should before FBG2) of fault point in view of the above and judge and only need change SW1 into the intersection attitude by parallel state, try again and gather the sensing function that just can realize FBG9 and FBG2.At this moment, shown in Fig. 5 (b), optical signals SW1 is through FBG9, SW4, FBG2, SW2, and the demodulating system place can collect 2 reflectance spectrums, the i.e. reflectance spectrum of FBG9 and FBG2.The collection of comprehensive twice transducing signal, we just can obtain the reflectance spectrum of all 9 FBG.
Similar with aforementioned process, when occurring two optical fiber tie point faults in the network simultaneously, be without loss of generality, might as well establish the fault point appears between SW3 and the FBG1 and between FBG6 and the FBG8, as Fig. 6 (a), when switch during in initial condition, fullpath during according to aforementioned operate as normal, light signal can only flow through SW1, FBG7, SW3, FBG4, FBG5, SW2, FBG6, we can only collect the reflectance spectrum of FBG7, FBG4, FBG5 and FBG6, in view of the above we can judge the position of (first) fault point should be before FBG8; Artificial control switch SW1 becomes crossing condition, as Fig. 6 (b), the collection that tries again, in like manner we can obtain the reflectance spectrum of FBG9, FBG2, FBG1, in view of the above we can judge the position of (second) fault point should be before FBG3.We just can judge the position of fault point and infer the state of the pairing optical switch of reflectance spectrum that will obtain all the other FBG according to the reflectance spectrum that obtains for this twice this moment.SW4 is become parallel state try again and gather us and can obtain the reflectance spectrum of FBG8 and FBG9, as Fig. 6 (c); SW1 is become parallel state, SW2 again and become and intersect attitude and do once and gather, we can obtain the reflectance spectrum of FBG7, FBG4, FBG5, FBG2 and FBG3, as Fig. 6 (d).Gather for comprehensive these 4 times, we can obtain the reflectance spectrum of all 9 FBG.Therefore can illustrate that even two fault points occur, the network plan that we propose still can be realized the sensing function of all Fibre Optical Sensors.
By the explanation of above-mentioned several situations, can prove that this sensing netting gear has high self-healing property, unfailing performance is good, and survival ability is strong, is applicable to the abominable occasion of environmental condition in the practical application.
Structure during divergence i=3 as shown in Figure 3.
Make an equilateral triangle earlier as central cam shape, our Fibre Optical Sensor of on its each bar limit, all connecting, do the 1st expansion of triangle optical fiber sensor network then: the external triangle of doing above-mentioned central cam shape makes former leg-of-mutton three summits lay respectively at the mid point on external Atria bar limit, we obtain other 3 triangles with central cam shape congruence like this, constitute inside and outside two-layer triangle.3 triangles of this new expansion respectively with the shared limit of central cam shape, every limit 1 Fibre Optical Sensor of connecting at least on two limits in addition, but for symmetry with simplified structure, the number that our series connection equates with the every limit of central cam shape is 1 transducer.The triangle optical fiber sensor network of we degree of being expanded i=2 like this.Remake the 2nd time of triangle optical fiber sensor network expansion: make an external triangle again with same method on the basis of i=2, we just obtain the triangle of new 3 equivalent of triangle of outermost layer during with i=2, inside and outside 3 layers of triangle altogether.The triangles of these 3 new expansions are the shared limit of outermost layer triangle during respectively with i=2, every limit 1 Fibre Optical Sensor of connecting at least on two limits in addition, but for symmetry with simplified structure, our series connection 2 transducers of number that the every limit of outermost layer triangle equates during with i=2.On external leg-of-mutton one of them summit of outermost layer, one 2 * 2 optical switch is arranged, is called main switch, respectively have on each leg-of-mutton each summit of internal layer one 2 * 2 from switch.We obtain the triangle sensing net of i=3 like this.
At this moment, see on the whole to have three layers of triangle that 4 Fibre Optical Sensors are arranged on every limit of outermost layer triangle, 2 transducers are arranged on every limit, intermediate layer, innermost layer is 1, and total has 21 transducers, and 6 from switch, 1 main switch.
A self-healing method and a process when structure that above embodiment 1 has discussed divergence i=2 breaks down, as divergence i=3 even when bigger, because the scale of sensing net will be bigger this moment, the detection range of whole sensing net and detection computations amount will significantly improve, but this moment, the self-healing method and the process of sensing net can be carried out with reference to embodiment 1 fully, repeated no more here.
Claims (3)
1. the extendible triangle optical fiber sensor network of high reliability method for designing is characterized in that the design procedure of this method is as follows:
1st, the central cam shape of triangle optical fiber sensor network design
At first design an equilateral triangle, 1 Fibre Optical Sensor of on leg-of-mutton each bar limit, all connecting at least, place, a summit in triangle that is outermost layer triangle connects one 2 * 2 optical switch, be called main switch, the self-healing function that is used to transmit the light signal between light source, transducer and the demodulating system and realizes optical fiber sensor network, defining this structure is that divergence is 1 triangle optical fiber sensor network;
2nd, the 1st of the triangle optical fiber sensor network the expansion
Make the external triangle of the central cam shape of the 1st step design, make former leg-of-mutton three summits lay respectively at the mid point on external Atria bar limit, obtain other 3 triangles with central cam shape congruence like this, constitute inside and outside two-layer triangle, 3 triangles of new expansion respectively with the shared limit of former triangle, every limit 1 Fibre Optical Sensor of connecting at least on two limits in addition, connect one 2 * 2 optical switch on leg-of-mutton one of them summit of external big triangle that is outermost layer, be called main switch, internal layer respectively connects one 2 * 2 optical switch on leg-of-mutton each summit, in order to distinguish, be called from switch, be mainly used in the self-healing function that realizes the triangle optical fiber sensor network, and to define this structure be that divergence is 2 triangle optical fiber sensor network;
3rd, of the triangle optical fiber sensor network
Inferior expansion
According to the extended method in the 2nd step, expand one by one;
When the diabolo optical fiber sensor network carries out
During inferior expansion, obtain inside and outside amounting to
Layer triangle, i wherein〉2, leg-of-mutton every the limit of in each layer each 1 Fibre Optical Sensor of connecting at least, connect one 2 * 2 optical switch on leg-of-mutton one of them summit of outermost layer, be called main switch, each internal layer also respectively connects one 2 * 2 optical switch on leg-of-mutton each summit, in order to distinguish, be called from switch, be mainly used in the self-healing function that realizes the triangle optical fiber sensor network, and to define this structure be that divergence is the triangle optical fiber sensor network of i.
2. method according to claim 1 is characterized in that in order to make triangle optical fiber sensor network symmetry with simplified structure 1 Fibre Optical Sensor of connecting on each limit of the central cam shape of the 1st step design; The divergence of the 2nd step design is on every limit of the 2nd layer of triangle of 2 triangle optical fiber sensor network 2 Fibre Optical Sensors to be arranged; The 3rd goes on foot total i layer triangle in the triangle optical fiber sensor network that the divergence that designs is i, and i layer triangle has on every limit
Individual Fibre Optical Sensor, whole triangle optical fiber sensor network is total
Individual transducer; In the internal layer triangle, every layer of leg-of-mutton each place, summit all has 1 from switch, and be total
Individual from switch; There is a main switch at one of them place, summit at the outermost layer triangle.
3. method according to claim 1 and 2 is characterized in that described 2 * 2 optical switch has two states: intersection attitude and parallel state, according to the needs decision optical switch state of each 2 * 2 optical switch position and light path; Each 2 * 2 optical switch state is by Artificial Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110174265XA CN102291180B (en) | 2011-06-27 | 2011-06-27 | Method for designing extensible triangular optical fiber sensing network with high reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110174265XA CN102291180B (en) | 2011-06-27 | 2011-06-27 | Method for designing extensible triangular optical fiber sensing network with high reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102291180A true CN102291180A (en) | 2011-12-21 |
| CN102291180B CN102291180B (en) | 2013-08-21 |
Family
ID=45337309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110174265XA Expired - Fee Related CN102291180B (en) | 2011-06-27 | 2011-06-27 | Method for designing extensible triangular optical fiber sensing network with high reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102291180B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144300A (en) * | 2017-06-19 | 2017-09-08 | 中国石油集团渤海钻探工程有限公司 | A kind of Large Copacity trigonometric expression passive fiber self diagnosis sensing network structure |
| CN107592218A (en) * | 2017-09-04 | 2018-01-16 | 西南交通大学 | A kind of data center network structure of high fault tolerance and strong autgmentability |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100071365A (en) * | 2008-12-19 | 2010-06-29 | 주식회사 케이티 | Fiber-obtic sensor network system and method for acquiring physical information thereby |
| CN101917229A (en) * | 2010-08-13 | 2010-12-15 | 天津大学 | Self-healing high-capacity optical fiber sensor network based on optical delay |
-
2011
- 2011-06-27 CN CN201110174265XA patent/CN102291180B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100071365A (en) * | 2008-12-19 | 2010-06-29 | 주식회사 케이티 | Fiber-obtic sensor network system and method for acquiring physical information thereby |
| CN101917229A (en) * | 2010-08-13 | 2010-12-15 | 天津大学 | Self-healing high-capacity optical fiber sensor network based on optical delay |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144300A (en) * | 2017-06-19 | 2017-09-08 | 中国石油集团渤海钻探工程有限公司 | A kind of Large Copacity trigonometric expression passive fiber self diagnosis sensing network structure |
| CN107592218A (en) * | 2017-09-04 | 2018-01-16 | 西南交通大学 | A kind of data center network structure of high fault tolerance and strong autgmentability |
| CN107592218B (en) * | 2017-09-04 | 2020-09-08 | 西南交通大学 | Construction method of data center network structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102291180B (en) | 2013-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4704713A (en) | Optical ring network | |
| JP6043652B2 (en) | Large capacity fiber optic switching device and optical transmission system | |
| US6097516A (en) | Optical add drop multiplex (OADM) | |
| JP2002504776A (en) | Ring / mesh optical network | |
| CN102291180B (en) | Method for designing extensible triangular optical fiber sensing network with high reliability | |
| CN101832794B (en) | Fiber Bragg grating and fiber Raman composite sensing network and realizing method thereof | |
| CN105703995A (en) | Electric smart automobile communication network system based on extensible annular Ethernet | |
| CN104125009B (en) | Underwater remote control communication network | |
| JP2012531845A (en) | Method and apparatus for handling multi-span section operating channel failures in ring optical transmission networks | |
| CA2318077A1 (en) | System and method for increasing the robustness of an optical ring network | |
| CN108292952A (en) | Communication system and fault detection method | |
| CN103944639A (en) | Passive optical fiber starring network with self-healing function | |
| CN202834778U (en) | Oil and gas pipeline monitoring system based on composite sensor | |
| CN101867506B (en) | Realizing device of large-capacitance self-healing optical fiber sensing network based on light spectrum type optical fiber sensor and realizing method | |
| CN103067086B (en) | Mixed type double-layer optical intelligent sensor network with bidirectional expandability | |
| WO2006095548A1 (en) | Fiber bragg grating element | |
| KR20160041221A (en) | Data Gathering System | |
| CN101881631B (en) | FBG (Fiber Bragg Grating) sensor network monitoring system based on photoswitch | |
| CN112953626A (en) | High-reliability fiber grating network model based on optical switch | |
| CN114777898B (en) | Symmetrical time division multiplexing structure and high-reliability optical fiber hydrophone array system | |
| CN101621676B (en) | Cascade connection type video optical transmitter and receiver with protection of optical self-healing ring | |
| MXPA00008183A (en) | Dense wdm in the 1310nm band. | |
| CN105610494B (en) | A kind of monitoring mark design method based on node pre-selection in all-optical network | |
| CN207184481U (en) | A kind of bus type optical-fiber intelligent sensing net protects system | |
| CN206862395U (en) | A kind of Large Copacity trigonometric expression passive fiber self diagnosis sensing network structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20210627 |