CN109630198A - A kind of protective door monitoring system and method for distributed sensing fiber tandem setting - Google Patents
A kind of protective door monitoring system and method for distributed sensing fiber tandem setting Download PDFInfo
- Publication number
- CN109630198A CN109630198A CN201910045250.XA CN201910045250A CN109630198A CN 109630198 A CN109630198 A CN 109630198A CN 201910045250 A CN201910045250 A CN 201910045250A CN 109630198 A CN109630198 A CN 109630198A
- Authority
- CN
- China
- Prior art keywords
- protective door
- optical sensor
- door
- fibre optical
- protective
- 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
- 239000000835 fiber Substances 0.000 title claims abstract description 123
- 230000001681 protective effect Effects 0.000 title claims abstract description 121
- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 154
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 6
- 230000001133 acceleration Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 7
- 230000005622 photoelectricity Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses a kind of protective doors of distributed sensing fiber tandem setting to monitor system, it further include light source (101), optical circulator (102), photodetector (103) and the data processor (3) being connect with the photodetector (103) of continuous transmitting different frequency optical signal including data transmission fiber (5) and fibre optical sensor；The fibre optical sensor is set on protective door, with the vibration of induction protection door body, deformation and switching information, and the fibre optical sensor on the protective door of different location receives the frequency difference of optical signal, the fibre optical sensor on several protective doors is connected in series, and the transmission fiber (5) is set between the adjacent fibre optical sensor and between the optical circulator (102) and the fibre optical sensor.The invention also discloses a kind of protective door monitoring methods of distributed sensing fiber tandem setting.The present invention is realized to the vibration of protective door and the monitoring of deformation information, prevents safety accident.
Description
Technical field
The invention belongs to protective door monitoring technical fields, are arranged more particularly, to a kind of distributed sensing fiber tandem
Protective door monitor system and method.
Background technique
Cavern is arranged in railway tunnel, and protective door is arranged in cavern, as fire separation measure by transverse passage-way, fire escape and vehicle
Row tunnel is mutually separated.Railway tunnel protective door is arranged in orbit, the work that the entire shop front of protective door receives repeatedly for a long time, high-intensitive
Wind action is filled in, the risk for having damage even to fall off at any time, protective door drops to side and its danger seriously may cause fortune
Seek safety accident.Therefore, vibration and deformation of the monitoring protection door under the action of Piston Action Wind passes through vibration and deformation data
It can judge protective door hidden danger that may be present, in advance to carry out maintenance replacement, anti-major structure to protective door before protective door falls off
At safety accident.
Wherein, the monitoring of protective door further includes door opening state in addition to the vibration of protective door and deformation under shutdown state
Under, Piston Action Wind effect leads to the impact velocity, the acceleration that generate at closing time, so that unit of operation need to grasp opening for protective door at any time
Shutdown information guarantees the safety of railway tunnel operation.
In the prior art, manual inspection usually is relied solely on by unit of operation to the monitoring of protective door, can not judged in advance
Risk that may be present.In addition there are also measurement protective door actual vibration and deformation scheme be foil gauge is pasted in door body, but this
Kind mode is only capable of measuring door body surface condition, to actual vibration and deformation values without directly embodying, cannot function as optimization design
Effectively reference.And without reference to the measurement to shutdown moment impact speed, acceleration.
Patent CN108122367A discloses a kind of protective door dropping-alarming system, including laser emitter, distributed light
Fiber sensor, transmission fiber, optical signal prosessing module and alarm module, wherein distributed fiberoptic sensor is evenly distributed on protection
On door-plate, the laser emitter, distributed fiberoptic sensor, transmission fiber and optical signal prosessing module have been in turn connected to form
Whole circuit, the optical signal prosessing module detect the pulse signal that the laser emitter issues, the optical signal prosessing mould
Block can reversely emit breakpoints of optical fiber caused by pulse signal falls off to components on protective door and position, the optical signal prosessing
Module is connect with the alarm module.Mainly optical fiber is arranged with the judgement that falls off of door body by being arranged in door body surface in the patent
The case where falling off on protective door, having a defect that can only can just monitor after falling off, and be unable to the feelings that look-ahead falls off
Condition is handled in time, may lead to safety accident because of processing delay.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides the anti-of distributed sensing fiber tandem setting
Gatekeeper examining system is protected, is connected by the fibre optical sensor being arranged on several protective doors, the vibration to multiple protective doors is realized, becomes
It is monitored while shape and switching information, thus, to protective door dropping situations, to be located in time according to vibration deformation information prediction
Reason avoids the occurrence of safety accident.
To achieve the goals above, the present invention provides a kind of protective door monitoring system of distributed sensing fiber tandem setting
System, including data transmission fiber and fibre optical sensor further include the light source and the light source of continuous transmitting different frequency optical signal
It the optical circulator of connection, the photodetector that is connected with the output end of the optical circulator and connect with the photodetector
Data processor；
The fibre optical sensor is set on protective door, protects door body vibration, deformation and switching information, and different positions with induction
The frequency that the fibre optical sensor on the protective door set receives optical signal is different, to position the position of protection door body；
The fibre optical sensor on several protective doors is connected in series, and the transmission fiber is set to the adjacent optical fiber and passes
Between sensor and between the optical circulator and the fibre optical sensor, to be visited in the light source, fibre optical sensor and photoelectricity
The light circuit for forming completion between device is surveyed, realizes the monitoring simultaneously to several protective doors.
Further, the fibre optical sensor is set to inside the door body of protective door.
Further, lateral arrangement of the fibre optical sensor along the protective door.
Further, the fibre optical sensor is covered on door body doorframe, loose-leaf and the door closer of the protective door.
It further, further include alarm module, the alarm module is connect with the data processor.
As another aspect of the present invention, a kind of protective door monitoring side of distributed sensing fiber tandem setting is provided
Method includes the following steps:
S1 light source emits the optical signal of different frequency, and the fibre optical sensor setting on each protective door receives the light of different frequency
Signal；
S2 optical signal is transmitted to transmission fiber by optical circulator；
S3 optical signal is successively transferred on the fibre optical sensor being arranged in series by the transmission fiber；
The optical signal of S4 respective frequencies is admitted in the modulator in fibre optical sensor, and the ginseng of door body is protected in modulator
Number interaction, obtains the optical signal modulated；
The optical signal transmission of S5 different frequency modulated is received by a photoelectric detector conversion into the optical circulator
At electric signal；
Electric signal described in S6 is transferred in data processor, show that protective door is specific by the processing of data processor
The information of deformation, vibration and switch gate.
Further, the parameter of the door body of the protective door includes the displacement of door body, speed, acceleration information.
Further, in step S5, the optical signal of different frequency modulated is converted into corresponding to by the photodetector
The electric signal of frequency information carries out with the position of door body the parameter of the door body of protective door corresponding.
Further, the fibre optical sensor being arranged in series is distributed on the protective door within the scope of 100KM.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) protective door of distributed sensing fiber tandem setting of the invention monitors system, by will be on several protective doors
The fibre optical sensor of setting is connected, and is monitored while realizing the vibration, deformation and switching information to multiple protective doors；Light source is continuous
Emit the optical signal of different frequency, the frequency of the received optical signal of fibre optical sensor on the protective door of corresponding different location is not
Together, it corresponds to the location information of protective door by the frequency acquisition of the last received optical signal of photodetector and passes through and read the frequency
Vibration, deformation and the switch gate information for the information acquisition corresponding position protective door that rate optical signal carries, thus to be become according to vibration
Shape information prediction carries out processing in time and avoids the occurrence of safety accident to protective door dropping situations.
(2) protective door of distributed sensing fiber tandem of the invention setting monitors system, and fibre optical sensor is set to protection
In the door body of door, influence of the fibre optical sensor vulnerable to other factors such as Piston Action Winds positioned at protective door surface, the data surveyed
There are errors, in some instances it may even be possible to which the case where there are wrong reports can be more due to being an integral structure with door body and internally positioned
The accurately relevant information of vibration and the deformation of induction protective door door body；Internal fibre optical sensor is arranged in be protected by door body
Firmly, against the influence of Piston Action Wind and other extraneous factors, fibre optical sensor is avoided to occur damaging the monitoring lost to protective door
Effect.
(3) protective door of distributed sensing fiber tandem of the invention setting monitors system, and fibre optical sensor is covered on anti-
Protect door door body doorframe, on loose-leaf and door closer, the door body doorframe of protective door is the frame of protective door, occurs deforming and dropping off
Situation can reflect the entire situation of door body in time, and loose-leaf and door closer are the important component of door body switch, be distributed by covering
The induction and transmission of fibre optical sensor on loose-leaf and door closer can learn the information of protection door switch in time, in time to phase
Pass problem is handled, and guarantees the safety of railway tunnel operation.
(4) the protective door monitoring method of distributed sensing fiber tandem of the invention setting, is continuously emitted not by light source
The optical signal of same frequency, and each fibre optical sensor being arranged in series is arranged different reception frequencies, pass through light signal fed back
Reception frequency correspond to the location information of protective door, pass through displacement, speed and the acceleration of the protective door that light signal fed back carries
Relevant information, obtain vibration, deformation and the switching information of corresponding protective door, it is more accurate to the monitoring of protective door, rise simultaneously
To the effect of prediction and warning.
Detailed description of the invention
Fig. 1 is the schematic diagram for the protective door monitoring system that distributed sensing fiber tandem is arranged in the embodiment of the present invention.
Wherein: 1- photoelectricity host, 101- light source, 102- optical circulator, 103- photodetector, the first Fibre Optical Sensor of 201-
Device, the second fibre optical sensor of 202-, 203- third fibre optical sensor, 3- data processor, 4- protective door, 5- transmission fiber.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 1 is the schematic diagram for the protective door monitoring system that distributed sensing fiber tandem is arranged in the embodiment of the present invention.Such as
Shown in Fig. 1, protective door monitoring system of the invention includes photoelectricity host 1, transmission fiber 5, fibre optical sensor and data processor,
Photoelectricity host 1 includes light source 101, optical circulator 102 and photodetector 103, and light source 101 emits optical signal, and passes through the ring of light
Row device 102 is transmitted, and is transmitted back to the optical signal come and is received by photodetector 103, photodetector 103 believes received light
Number it is converted into electric signal；Photodetector 103 is connect with data processor 3, after the optical signal received is converted to electric signal
Feed back to data processor 3, data processor 3 handles electric signal to be vibrated and deformation information accordingly.
Preferably, light source 101 continuously emits the optical signal of different frequency, and is transmitted by optical circulator 102.
Wherein, the protective door in tunnel is arranged successively setting, and fibre optical sensor is arranged on single protective door, is arranged successively and sets
The fibre optical sensor for being respectively provided with fibre optical sensor on several tunnel protection doors set, and being arranged successively on several protective doors of setting
Be connected in series, e.g., respectively arranged first fibre optical sensor 201 on the protective door set gradually, the second fibre optical sensor 202,
Third fibre optical sensor 203 is sequentially connected in series several fibre optical sensors of setting, each fibre optical sensor is optical sensitive knot
Structure, fibre optical sensor are used to capture the information of the displacement of protective door door body, velocity and acceleration, can by the displacement information of door body
To judge the deformation or shutdown information of door body, the phase of vibration may determine that by velocity and acceleration information combination displacement information
Close information.
The working principle of fibre optical sensor be by the light beam of light source incidence via optical fiber be sent into modulator, in modulator with
The interaction of extraneous measured parameter, measured parameter therein are the information parameter of the displacement of door body, velocity and acceleration, mutually
Make intensity, wavelength, frequency, phase, the polarization state etc. of the optical property such as light of light to change after effect, becomes and modulated
Optical signal.
Preferably, fibre optical sensor is set in the door body of protective door, is placed in door body and protective door in protective door production
It completes together, is located at the intracorporal fibre optical sensor of door, on the one hand, the fibre optical sensor positioned at protective door surface is vulnerable to work
The influence of the other factors such as wind is filled in, there are errors for the data surveyed, in some instances it may even be possible to the case where there are wrong reports, due to being one with door body
Body formula structure and internally positioned, therefore can more accurately incude the relevant information of vibration and the deformation of protective door door body；Separately
On the one hand, internal fibre optical sensor is arranged in be protected by door body, against the influence of Piston Action Wind and other extraneous factors, keeps away
Exempt from fibre optical sensor to damage, loses the monitoring effect to protective door.
Further, fibre optical sensor is covered on protective door door body doorframe, loose-leaf and door closer, the door body door of protective door
Frame is the frame of protective door, and the case where deforming and dropping off can reflect the entire situation of door body in time, loose-leaf and closes door
Device is the important component of door body switch, by the induction and the transmission energy that cover the fibre optical sensor being distributed on loose-leaf and door closer
The enough information for learning protection door switch in time, is in time handled relevant issues, guarantees the safety of railway tunnel operation.
Transmission fiber 5 is set between two neighboring fibre optical sensor, is connected several fibre optical sensors by transmission fiber 5
At an entirety, further, fibre optical sensor 5 is equally set between photoelectricity host 1 and fibre optical sensor, passes through fibre optical sensor
5 transmission, the optical signal of light source transmitting is transmitted on the fibre optical sensor on protective door by optical circulator in photoelectricity host 1,
And it is successively transferred on several fibre optical sensors being sequentially connected in series, the work that the vibration of door body and deformation information pass through fibre optical sensor
With modulated optical signal is formed, which is back in optical circulator 102, and is converted after being received by photodetector 103
At electric signal, electric signal is handled finally by data processor 3 and is vibrated accordingly and deformation information.
Preferably, the fibre optical sensor on each protective door receives the frequency difference of optical signal, the only light of respective frequencies
Signal optical fibre sensor can just receive, and the relevant parameter information of vibration and the deformation of corresponding protection door body be handled, shape
It is back to optical circulator 102 at modulated optical signal, optical detector 103 is believed according to the position of the frequency acquisition protective door of optical signal
Breath, to obtain vibration and the deformation information of corresponding protective door.
Further, when the case where falling off or toppling over occurs in protective door, fibre optical sensor is with fracture, to disconnect light
Connection between circulator 102 and fibre optical sensor, do not receive return optical signal occur protective door it is unexpected topple over or
The case where falling off is handled in time.
Preferably, protective door monitoring system further includes alarm module, and alarm module is connect with data processor, at data
The information of protective door that reason device is obtained according to fibre optical sensor indicates that it has to fall off and topples over risk, i.e. the deformation or vibration of protective door
When amplitude reaches a certain limiting value, alarm module alert prompts protective door needs to place under repair or replace in time.
A kind of protective door monitoring method of distributed sensing fiber tandem, steps are as follows:
S1 light source 101 emits the optical signal of different frequency, and the fibre optical sensor setting on each protective door receives different frequency
Optical signal, the optical signal fibre optical sensor of non-corresponding frequency not receives, and it is the position letter of protective door that frequency information is corresponding
There is deformation by the protective door that frequency can clearly be where, falls off or topple in breath；
S2 optical signal is transmitted to transmission fiber 5 by optical circulator 102；
S3 optical signal is successively transferred on each fibre optical sensor being arranged in series by transmission fiber 5；
Wherein, it is respectively provided with fibre optical sensor on the protective door being successively arranged side by side, and passes through series connection between fibre optical sensor
Mode be attached, the relevant information for the protective door within the scope of 100KM that can be surveyed by concatenated mode, realize simultaneously it is right
It is monitored while multiple protective doors；
The optical signal of S4 respective frequencies is admitted in the modulator in fibre optical sensor, and the ginseng of door body is protected in modulator
Number interaction, obtains the optical signal modulated；
The parameter for wherein protecting door body includes the displacement of door body, speed, acceleration information, the i.e. vibration, deformation of protective door
And switching information；
The optical signal transmission of S5 different frequency modulated is received into optical circulator 102, and by photodetector 103,
The optical signal of different frequency modulated is converted into the electric signal of respective frequencies information by photodetector 103, i.e., according to telecommunications
Number location information of available protective door and the information of vibration, deformation and switch；
S6 electric signal is transferred in data processor 3, show that protective door specifically becomes by the processing of data processor
Shape, the information of vibration and switch gate, when something goes wrong in time handle protective door, avoid result in safety accident.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of protective door of distributed sensing fiber tandem setting monitors system, including data transmission fiber (5) and optical fiber pass
Sensor, which is characterized in that further include continuously emitting the light source (101) of different frequency optical signal, being connect with the light source (101)
Optical circulator (102), the photodetector (103) being connected with the output end of the optical circulator (102) and with the photoelectricity visit
Survey the data processor (3) of device (103) connection；
The fibre optical sensor is set on protective door, protects door body to vibrate, deform and switching information with induction, and different location
The frequency that the fibre optical sensor on the protective door receives optical signal is different, to position the position of protection door body；
The fibre optical sensor on several protective doors is connected in series, and the transmission fiber (5) is set to the adjacent optical fiber and passes
Between sensor and between the optical circulator (102) and the fibre optical sensor, in the light source (101), Fibre Optical Sensor
The light circuit of completion is formed between device and photodetector (103), realizes the monitoring simultaneously to several protective doors.
2. a kind of protective door of distributed sensing fiber tandem setting according to claim 1 monitors system, feature exists
In the fibre optical sensor is set to inside the door body of protective door.
3. a kind of protective door of distributed sensing fiber tandem setting according to claim 1 or 2 monitors system, feature
It is, lateral arrangement of the fibre optical sensor along the protective door.
4. a kind of protective door of distributed sensing fiber tandem setting described in any one of claim 1 to 3 monitors system
System, which is characterized in that the fibre optical sensor is covered on door body doorframe, loose-leaf and the door closer of the protective door.
5. a kind of protective door of distributed sensing fiber tandem setting according to claim 1 monitors system, feature exists
In further including alarm module, the alarm module is connect with the data processor (3).
6. such as a kind of protective door monitoring method of distributed sensing fiber tandem setting according to any one of claims 1 to 5,
It is characterized by comprising the following steps:
S1 light source (101) emits the optical signal of different frequency, and the fibre optical sensor setting on each protective door receives different frequency
Optical signal；
S2 optical signal is transmitted to transmission fiber (5) by optical circulator (102)；
S3 optical signal is successively transferred on the fibre optical sensor being arranged in series by the transmission fiber (5)；
The optical signal of S4 respective frequencies is admitted in the modulator in fibre optical sensor, and the parameter phase of door body is protected in modulator
Interaction obtains the optical signal modulated；
The optical signal transmission of S5 different frequency modulated connects into the optical circulator (102), and by photodetector (103)
Receipts are converted into electric signal；
Electric signal described in S6 is transferred in data processor (3), show that protective door is specific by the processing of data processor
The information of deformation, vibration and switch gate.
7. a kind of protective door monitoring method of distributed sensing fiber tandem setting according to claim 6, feature exist
In the parameter of the door body of the protective door includes the displacement of door body, speed, acceleration information.
8. a kind of protective door monitoring method of distributed sensing fiber tandem setting according to claim 6 or 7, feature
It is, in step S5, the optical signal of different frequency modulated is converted into respective frequencies information by the photodetector (103)
Electric signal, the parameter of the door body of protective door is carried out with the position of door body corresponding.
9. a kind of protective door monitoring method of distributed sensing fiber tandem setting, feature according to right 6 or 7 exist
In the fibre optical sensor being arranged in series is distributed on the protective door within the scope of 100KM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045250.XA CN109630198B (en) | 2019-01-17 | 2019-01-17 | Distributed sensing optical fiber tandem arrangement protection door monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045250.XA CN109630198B (en) | 2019-01-17 | 2019-01-17 | Distributed sensing optical fiber tandem arrangement protection door monitoring system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630198A true CN109630198A (en) | 2019-04-16 |
| CN109630198B CN109630198B (en) | 2024-04-19 |
Family
ID=66062056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910045250.XA Active CN109630198B (en) | 2019-01-17 | 2019-01-17 | Distributed sensing optical fiber tandem arrangement protection door monitoring system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630198B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050276611A1 (en) * | 2004-06-15 | 2005-12-15 | Patel Jayantilal S | Distributed fiber sensor with detection and signal processing using polarization state management |
| CN102003944A (en) * | 2010-09-29 | 2011-04-06 | 哈尔滨工程大学 | Multiscale quasi-distributed white light interferometric strain measurement device adopting common path compensation and method thereof |
| CN102692268A (en) * | 2011-03-23 | 2012-09-26 | 东南大学 | Distributed optical fiber vibration sensor for structural vibration detection |
| CN102692269A (en) * | 2012-06-13 | 2012-09-26 | 重庆大学 | Positioning method and system of Sagnac fiber distributed vibrating sensor |
| KR101185434B1 (en) * | 2011-07-29 | 2012-10-02 | 한국광기술원 | Vibration measuring sensor and appratus using the optical fiber |
| CN102854541A (en) * | 2011-09-13 | 2013-01-02 | 代剑华 | Passive method and passive system with function of positioning for acquiring downhole information after disasters |
| CN103364070A (en) * | 2013-07-20 | 2013-10-23 | 北京航空航天大学 | Fiber bragg grating vibration sensing system based on volume phase grating demodulation |
| CN104990620A (en) * | 2015-07-03 | 2015-10-21 | 南京大学 | Fiber bragg grating array-based phase-sensitive optical time domain reflection device and method |
| CN105180977A (en) * | 2015-05-27 | 2015-12-23 | 三峡大学 | Single-fiber Michelson interferometric sensor and sensing system |
| CN106641739A (en) * | 2016-12-30 | 2017-05-10 | 天津市誉航润铭科技发展有限公司 | Water delivery pipe leakage locating system |
| CN107389144A (en) * | 2017-07-27 | 2017-11-24 | 电子科技大学 | A kind of downhole fluid flow-measuring method and flowmeter |
| WO2018028051A1 (en) * | 2016-08-11 | 2018-02-15 | 天津大学 | Optical fiber grating sensing demodulation device capable of fluctuation suppression under varying temperature environment and demodulating method |
| CN108122367A (en) * | 2017-12-04 | 2018-06-05 | 中铁第四勘察设计院集团有限公司 | A kind of protective door dropping-alarming system |
| CN109186646A (en) * | 2018-09-25 | 2019-01-11 | 中铁第四勘察设计院集团有限公司 | A kind of protective door state monitoring method and system |
| CN209800023U (en) * | 2019-01-17 | 2019-12-17 | 中铁第四勘察设计院集团有限公司 | Protective door monitoring system with distributed sensing optical fibers arranged in series |
-
2019
- 2019-01-17 CN CN201910045250.XA patent/CN109630198B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050276611A1 (en) * | 2004-06-15 | 2005-12-15 | Patel Jayantilal S | Distributed fiber sensor with detection and signal processing using polarization state management |
| CN102003944A (en) * | 2010-09-29 | 2011-04-06 | 哈尔滨工程大学 | Multiscale quasi-distributed white light interferometric strain measurement device adopting common path compensation and method thereof |
| CN102692268A (en) * | 2011-03-23 | 2012-09-26 | 东南大学 | Distributed optical fiber vibration sensor for structural vibration detection |
| KR101185434B1 (en) * | 2011-07-29 | 2012-10-02 | 한국광기술원 | Vibration measuring sensor and appratus using the optical fiber |
| CN102854541A (en) * | 2011-09-13 | 2013-01-02 | 代剑华 | Passive method and passive system with function of positioning for acquiring downhole information after disasters |
| CN102692269A (en) * | 2012-06-13 | 2012-09-26 | 重庆大学 | Positioning method and system of Sagnac fiber distributed vibrating sensor |
| CN103364070A (en) * | 2013-07-20 | 2013-10-23 | 北京航空航天大学 | Fiber bragg grating vibration sensing system based on volume phase grating demodulation |
| CN105180977A (en) * | 2015-05-27 | 2015-12-23 | 三峡大学 | Single-fiber Michelson interferometric sensor and sensing system |
| CN104990620A (en) * | 2015-07-03 | 2015-10-21 | 南京大学 | Fiber bragg grating array-based phase-sensitive optical time domain reflection device and method |
| WO2018028051A1 (en) * | 2016-08-11 | 2018-02-15 | 天津大学 | Optical fiber grating sensing demodulation device capable of fluctuation suppression under varying temperature environment and demodulating method |
| CN106641739A (en) * | 2016-12-30 | 2017-05-10 | 天津市誉航润铭科技发展有限公司 | Water delivery pipe leakage locating system |
| CN107389144A (en) * | 2017-07-27 | 2017-11-24 | 电子科技大学 | A kind of downhole fluid flow-measuring method and flowmeter |
| CN108122367A (en) * | 2017-12-04 | 2018-06-05 | 中铁第四勘察设计院集团有限公司 | A kind of protective door dropping-alarming system |
| CN109186646A (en) * | 2018-09-25 | 2019-01-11 | 中铁第四勘察设计院集团有限公司 | A kind of protective door state monitoring method and system |
| CN209800023U (en) * | 2019-01-17 | 2019-12-17 | 中铁第四勘察设计院集团有限公司 | Protective door monitoring system with distributed sensing optical fibers arranged in series |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109630198B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2087387B1 (en) | Multi mode fibre perturber | |
| CN101952862B (en) | Smoke alarm with temporal evaluation of a backscatter signal, test method for the functional capability of a smoke alarm | |
| CN102292621B (en) | Improvements in distributed fiber optic sensing | |
| US7744275B2 (en) | Optical fiber temperature sensing device | |
| EP1203211B1 (en) | Method and device for fibre-optical measuring systems | |
| EP2402736A2 (en) | Multiple wavelength cavity ring down gas sensor | |
| CN104266786A (en) | Bolt fastening degree online detecting system and method based on OTDR technology | |
| CA3043096A1 (en) | Overheat detection using a fiber bragg gratings array by time-of-flight | |
| CN106644276A (en) | Monitoring system for detecting tank leakage by utilizing distributed optical fiber | |
| CN108122367A (en) | A kind of protective door dropping-alarming system | |
| CN111024283B (en) | Multi-parameter optical fiber sensing detection method and system for down-leading optical cable | |
| CN209800023U (en) | Protective door monitoring system with distributed sensing optical fibers arranged in series | |
| JP4665779B2 (en) | Fence vibration sensor device | |
| EP3742138B1 (en) | Fiber optic temperature sensors in a distributed smoke detection system | |
| CN100516781C (en) | Fiber optic surveillance system | |
| CN109737996A (en) | A kind of protective door that distributed sensing fiber is set side by side monitoring system and method | |
| KR101944282B1 (en) | Monitoring system for emergency situation using optical fiber | |
| CN109630198A (en) | A kind of protective door monitoring system and method for distributed sensing fiber tandem setting | |
| US5862274A (en) | Apparatus for the assessment of damage to a ship | |
| CN209495711U (en) | A kind of protective door that distributed sensing fiber is set side by side monitoring system | |
| CN107399342B (en) | A kind of railway circumference, which is artificially invaded, determines method, apparatus and system | |
| US5600133A (en) | Structural analyzer using acousto-optic sensor | |
| CN103245299B (en) | A kind of high spatial resolution optical fiber sensing system based on Wavelength tunable laser | |
| EP3295121B1 (en) | Facility for monitoring a structure | |
| CN107144888A (en) | A kind of equipment and system protected for railway perimeter security |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |