CN209166470U - A kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR - Google Patents
A kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR Download PDFInfo
- Publication number
- CN209166470U CN209166470U CN201821413419.XU CN201821413419U CN209166470U CN 209166470 U CN209166470 U CN 209166470U CN 201821413419 U CN201821413419 U CN 201821413419U CN 209166470 U CN209166470 U CN 209166470U
- Authority
- CN
- China
- Prior art keywords
- light
- module
- interface
- circulator
- photosynthesis
- 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.)
- Expired - Fee Related
Links
- 238000000253 optical time-domain reflectometry Methods 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 39
- 230000029553 photosynthesis Effects 0.000 claims abstract description 38
- 238000010672 photosynthesis Methods 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims description 32
- 230000003287 optical effect Effects 0.000 claims description 25
- 230000008859 change Effects 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000013307 optical fiber Substances 0.000 claims description 17
- 230000010287 polarization Effects 0.000 claims description 15
- 238000013480 data collection Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 22
- 238000005516 engineering process Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR, described device includes: to detect photosynthesis device, circulator device, sensor fibre, microwave receiving device, detector assembly, number to adopt card device, general supply device and event box, and loaded by the cabinet for being equipped with special interface respectively.The general supply device of offer uses multicore structure, and special core is specialized in, and multicore structure design avoids experimenter due to not knowing each module for power supply situation, and wrong plug power supply makes the excessive generation for leading to instrument damage situations of part of module pressure supply, it is ensured that laboratory apparatus safety.Designed using modular combination, structure is simple to operation, can conveniently carry out it is between the two be switched fast, it can be achieved that temperature become, the distributed measurement of the multiple targets parameter such as strain and disturbance.
Description
Technical field
The utility model relates to the emerging system of technical field of optical fiber sensing more particularly to a kind of BOTDR and Φ-OTDR dresses
It sets and encapsulating structure.
Background technique
Optical fiber sensing technology is the product of modern Fibre Optical Communication Technology development, is one kind using light wave as carrier, is with optical fiber
Medium, for perceiving and transmitting the New Sensing Technology of extraneous measured signal.Distributed Optical Fiber Sensing Techniques are Fibre Optical Sensors
An important branch, using optical fiber simultaneously as sensing element and transmission medium, the space of tested parameter can be obtained simultaneously
Distribution and the information changed over time, therefore have a good application prospect, main status is occupied in Fibre Optical Sensor market.
Its working principle is typically based on optical time domain reflection (Optical Time Domain Reflectometry, OTDR) principle: Xiang Guang
The pulsed light injected in fibre constantly generates back-scattering light during onwards transmission, in each position of optical fiber.When optical fiber by
When to external influence, the variation for scattering the parameters such as light frequency, power, phase can be caused, by detecting backscattering in incidence end
The variation of each parameter of light, to realize the monitoring to event along optical fiber, and according to the pulse of the scattering light and sending that receive
Time difference between light, case point is positioned.
Brillouin light Time Domain Reflectometry (BOTDR) and phase sensitive optical time domain reflection (Φ-OTDR) technology are that two kinds of applications are wide
General Distributed Optical Fiber Sensing Techniques.BOTDR is using the difference on the frequency of spontaneous brillouin scattering light and incident light to temperature and strain
The sensitive characteristic of variation, realize the distributed sensing of temperature and strain.BOTDR technology can be applied not only to multiple environment ginsengs
The detection (such as temperature, stress) of amount, and have the characteristics that spatial resolution is high, sensing scope is big and measurement error is small.Φ-
The position that OTDR is disturbed by the time delay between measurement injected pulse light and reception signal.The a certain position along optical fiber
It sets when disturbing, the effect by extraneous stress is caused fiber-draw and variations in refractive index, in turn by the optical fiber at the position
Light phase at this is caused to change.Due to the interference effect between Rayleigh scattering signal, the variation of phase will cause backwards to scattered
Light light intensity is penetrated to change.By detecting back rayleigh scattering light, compare Φ-OTDR different moments back rayleigh scattering Curve Amplitude
The position for spending variation can find out extraneous disturbance event, and be positioned.Φ-OTDR has measurement sensitivity height, response speed
Characteristics, the faint disturbance event being very suitable in detection fiber and the dynamics such as degree is fast measure, thus boundary intrusion detection,
Fabric structure safety monitoring etc. has huge application potential.However existing distributed optical fiber sensing system is mostly only
Erection system works independently, and recycling rate of waterused is lower, to realize that many reference amounts measure simultaneously, operates more complex, system cost of implementation
It is higher.
Summary of the invention
The technical problem to be solved by the utility model is to
In view of the deficiencies of the prior art, the utility model provides a kind of emerging system device based on BOTDR and Φ-OTDR
And encapsulating structure, it can realize being switched fast for BOTDR system and Φ-OTDR system, conveniently to realize that temperature becomes, answers
Become and the accurate stable of disturbance event measures.
The utility model uses following technical scheme to solve above-mentioned technical problem:
The utility model proposes a kind of emerging system devices based on BOTDR and Φ-OTDR, including detection photosynthesis dress
It sets, circulator device, sensor fibre, microwave receiving device, detector assembly, count and adopt card device, general supply device and event box；
The detection photosynthesis device, circulator device, sensor fibre, microwave receiving device, detector assembly, number adopt card device, total
Power supply device and event box are each located in independent cabinet, and the cabinet is equipped with interface；The company of the emerging system device
It connects relationship and is in first state or the second state；
The detection photosynthesis device exports modulated amplified light pulse, into circulator device, the circulator
One end of the first light-emitting window connection sensor fibre of device, the other end connection event box of the sensor fibre；The circulator
Second light-emitting window of device connects the detector assembly in the first state, described in the output end connection of the detector assembly
Number adopts card device；Second light-emitting window of the circulator connects the microwave receiving device in the second condition, and the microwave connects
The output end of receiving apparatus connects the number and adopts card device；The detection photosynthesis device exports the entrance of local oscillator light in the second condition
The microwave receiving device；
The detection photosynthesis device includes light source module, light pulse modulation module and EDFA module；The light source module,
Light pulse modulation module and EDFA module are sequentially connected；
The microwave receiving device includes polarization state disturbance module, broadband PD module and microwave source module；The light
The first input end of polarization state disturbance module receives the local oscillator light letter that the light source module in detection photosynthesis device directly exports
Number；The broadband PD module receives the optical signal of the second output terminal from circulator device；The first of the broadband PD module
Output end connects the second input terminal of polarization state disturbance module, described in the second output terminal connection of the broadband PD module
Microwave source module；The output end of the microwave source module connects the number and adopts card device.
A kind of foregoing emerging system device based on BOTDR and Φ-OTDR, further, the light source module
Light source is done using 16dBm narrow linewidth laser, and the optical signal issued is divided into two beam of 50:50 through fiber coupler.
A kind of foregoing emerging system device based on BOTDR and Φ-OTDR, further, the light pulse tune
Molding block uses acousto-optic modulator.
A kind of foregoing emerging system device based on BOTDR and Φ-OTDR, further, the sensor fibre
Using G.652 single mode optical fiber.
A kind of foregoing emerging system device based on BOTDR and Φ-OTDR, further, the detector dress
It sets using APD detector, for the conversion of photosignal, the back rayleigh scattering optical signal that circulator exports is converted into telecommunications
Number.
A kind of foregoing emerging system device based on BOTDR and Φ-OTDR, further, the sound field disturbance
Event box generates vibration, and built-in function generator and driving circuit using piezoelectric ceramics.
The utility model also proposes a kind of for loading the encapsulating structure of the emerging system device, including detection photosynthesis
Device box, circulator device box, number adopt card device cabinet, microwave receiving device cabinet, detector assembly cabinet, general supply
Device, sound field disturbance event carton and crate body, warm change event carton and crate body；
The detection photosynthesis device box includes: equipped with interface
Photosynthesis installation's power source interface and detection photosynthesis installation's power source switch are detected, light source module, Guang Mai are internally connected
Modulated module and EDFA module, externally for connecting 12V DC power supply, the interface is 9 core interfaces；
The parameter setting USB interface of EDFA module internally connects EDFA module, externally for connecting terminal；
Local oscillator light light-emitting window, internally connects light source module, and externally connection polarization state disturbs module in the second condition
Local oscillator light light inlet；
EDFA light-emitting window internally connects EDFA module output end, the light inlet of external connection circulator device；
First synchronization signal triggers interface, is internally separately connected light source module, light pulse modulation module and EDFA module, right
Outer connection number adopts the second synchronization signal triggering interface of card device, for ensuring that signal is synchronous；
The circulator device box includes: equipped with interface
Light inlet is used for transmission through the amplified optical signal of EDFA module；It is connected with EDFA light-emitting window；
First light-emitting window, is used for transmission optical signal, is connected with one end of sensor fibre；
Second light-emitting window is used for transmission from the reflected back-scattering light of sensor fibre, connects institute in the first state
The the first back-scattering light light inlet for stating detector assembly connects the second of the microwave receiving device backwards in the second condition
Scatter light light inlet；
The number adopts card device cabinet equipped with interface
Number adopts card device power interface sum number and adopts card device power switch, described to connect externally for connecting 5V DC power supply
Mouth is 2 core interfaces；
Data collection output mouth, externally for connecting terminal USB interface；
Second synchronization signal triggers interface, and the first synchronization signal of connection detection photosynthesis device triggers interface, for true
Information-preserving synchronization；
Data collection terminal mouth connects the first photoelectric conversion signal delivery outlet of detector assembly under first state, for adopting
The photoelectric conversion signal that collection Φ-OTDR system monitoring arrives；The second photoelectric conversion letter of microwave receiving device is connected under second state
Number output, the photoelectric conversion signal monitored for acquiring BOTDR system；
The microwave receiving device cabinet interface includes:
Microwave receiving device power interface and microwave receiving device power switch, externally for connecting 12V DC power supply, institute
Stating interface is 12 core interfaces；
Microwave source parameter setting USB interface, externally for being connected to terminal；
Second back-scattering light light inlet of microwave receiving device connects the second light-emitting window of circulator device；
Local oscillator light light inlet, connection detects the local oscillator light light-emitting window of photosynthesis device in the second condition；
Second photoelectric conversion signal delivery outlet, connection number adopt the data collection terminal mouth of card device；
The detector assembly cabinet interface includes:
Detector assembly power interface and detector assembly power switch, it is described to connect externally for connecting 5V DC power supply
Mouth is 2 core interfaces；
First photoelectric conversion signal delivery outlet, connection number adopt the data collection terminal mouth of card device；
First back-scattering light light inlet of detector assembly connects the second light-emitting window of circulator device；
The general supply device box interface includes:
General supply device 220V AC power interface and general supply device 220V ac power switch；
12V DC the first delivery outlet of electricity, electric first delivery outlet of the 12V DC is 9 cored structures；
12V DC the second delivery outlet of electricity, electric second delivery outlet of the 12V DC is 12 cored structures；
5V direct current delivery outlet, the 5V direct current electricity output (29,30) are 2 cored structures；
The sound field disturbance event carton and crate body includes: equipped with interface
Sound field disturbance event box power interface and sound field disturbance event box power switch, externally for connecting 220V alternating current
Pressure；
Vibration event parameter setting and display window；
The first of sensor fibre enters fine mouth and the first outlet；
The temperature change event carton and crate body includes: equipped with interface
Warm change event box power interface and warm change event box power switch, externally for connecting 220V AC voltage；
Temperature display window is used for displays temperature；
The second of sensor fibre enters fine mouth and the second outlet.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
1. general supply device provided by the utility model uses multicore structure, the 12V electricity being connected with detection photosynthesis device
Source interface is 9 cored structures, and the 12V power interface being connected with microwave receiving device is 12 cored structures, adopts card and detector phase with number
5V power interface even is 2 core interfaces.Multicore structure design avoids experimenter during experimental implementation due to unclear
Each module for power supply situation of Chu, wrong plug power supply make the excessive generation for leading to instrument damage situations of part of module pressure supply, it is ensured that experiment
Instrument safety；
2. the local oscillator that polarization state disturbance module described in the utility model separates narrow linewidth laser through fiber coupler
The polarization state of light carries out rapid perturbations, reduces influence of the polarization state to system performance of light；
3. in the utility model, the function of BOTDR system reception device is undertaken by microwave receiving device, Φ-OTDR system
The function of reception device is undertaken by detector assembly；General supply device described in the utility model, detection photosynthesis device, circulator
Device, sensor fibre and number adopt the multiplexing part for clamping and being set to this emerging system device, for BOTDR and Φ-OTDR system
Share, between two systems can automatic or manual switch its operating mode, improve emerging system device reusability and system benefit
With rate；
To sum up, the utility model, which can combine, builds two kinds of distributed optical fiber sensing systems of BOTDR and Φ-OTDR, Neng Goufang
Just efficiently carry out it is between the two is switched fast, with realize temperature become, the distributed measurement of the multiple targets parameter such as strain and disturbance；
Utility model device is designed using modular combination, and structure is simple to operation, realizes the distributing optical fiber sensing skill of multimachine reason
Art.Suitable for undergraduate course neck related to the teaching of postgraduate's sensing technology, graduation project, innovation undertaking contest, engineering development etc.
Domain is widely used.
Detailed description of the invention
Fig. 1 is the emerging system device principle block diagram of the utility model；
Fig. 2 is the detection photosynthesis device box schematic diagram of the utility model；
Fig. 3 is the circulator device box schematic diagram of the utility model；
Fig. 4 is that the number of the utility model adopts card device cabinet schematic diagram；
Fig. 5 is the microwave receiving device cabinet schematic diagram of the utility model；
Fig. 6 is the detector assembly cabinet schematic diagram of the utility model；
Fig. 7 is the general supply schematic device of the utility model；
Fig. 8 is the sound field disturbance event carton and crate body schematic diagram that the utility model Φ-OTDR system is used；
Fig. 9 is the warm change event box schematic diagram that the utility model BOTDR system is used；
Figure 10 is the Φ-OTDR experimental system connection block diagram of the utility model；
Figure 11 is the BOTDR experimental system connection block diagram of the utility model.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
As shown in Figure 1, being the emerging system device principle block diagram of the utility model.Wherein number is connected by solid line 1.
Part is BOTDR system operating mode, and it is Φ-OTDR system operating mode that number, which is dotted line institute coupling part 2., the two it
Between can be freely combined by replacing line 1. and 2..Curve is that general supply module for power supply illustrates route.The device includes visiting
It surveys photosynthesis device, circulator device, sensor fibre, microwave receiving device, detector assembly, number and adopts card device, general supply dress
It sets and event box.The event box includes three kinds of warm change event box, strain event box and sound field disturbance event box.It is practical new at this
In type device, the detection photosynthesis device, circulator device, sensor fibre, number adopt card device and general supply device as this
The multiplexing part of emerging system device shares for BOTDR and Φ-OTDR system, sees unnumbered solid line institute interconnecting piece in Fig. 1
Point；The microwave receiving device, warm change event box and strain event box are dedicated into BOTDR system, see that in Fig. 1 1. number is
Solid line institute coupling part；The detector assembly and sound field disturbance event box are Φ-OTDR system-specific, see that number is in Fig. 1
2. dotted line institute coupling part.Line 1. and 2. can be replaced between two systems by automatic or manual to switch its Working mould
Formula.
As shown in Figure 1, the detection photosynthesis device includes light source module, light pulse modulation module and EDFA module.This
In embodiment, light source module does light source using 16dBm narrow linewidth laser, and the optical signal of sending is divided into 50 through fiber coupler:
50 liang of beams, it is a branch of as detection light, it is a branch of to be used as local oscillator optical signal；
Light pulse modulation module uses electrooptic modulator AOM, and the continuous probe light for exporting laser is modulated into one
Determine the pulse signal of pulsewidth；
EDFA module is Optical pulse amplification module, is amplified into circulator dress by EDFA by the light pulse of AOM output
It sets.
As shown in Fig. 2, being the detection photosynthesis device box schematic diagram of the utility model.Above-mentioned light source module, light pulse
Modulation module and EDFA module are both placed in detection photosynthesis device box.Wherein, 1 and 2 detection photosynthesis is respectively indicated
Installation's power source interface and power switch connect 12V DC power supply, 9 core interfaces；3 be the parameter setting USB interface of EDFA module,
Terminal is connected to be configured；4,5 be respectively local oscillator light light-emitting window and EDFA light-emitting window；6 connect for synchronization signal triggering
Mouthful, Ka13Kou is adopted with number and is connected, to ensure that signal is synchronous.
As shown in figure 3, being the circulator device box schematic diagram of the utility model.Wherein, 7 be circulator light inlet,
Connection is through the amplified optical signal of EDFA, i.e., 5 mouthfuls of connection detection photosynthesis device；8 be light-emitting window, connects sensor fibre；9 are
From the reflected back-scattering light of sensor fibre, connection signal reception device, microwave when such as BOTDR system operating mode is connect
Detector assembly when receiving apparatus or Φ-OTDR system operating mode.The circulator device is used for the amplified smooth arteries and veins of EDFA
Rush signal and be sent into sensor fibre, exported again through circulator to detector assembly by the reflected back-scattering light of sensor fibre or
Microwave receiving device is used for optical signal prosessing.
In the present embodiment, sensor fibre described in the utility model uses G.652 single mode optical fiber, at normal temperature its brillouin frequency
Moving peak value is about 10.8GHz.
As shown in figure 4, the number for the utility model adopts card device cabinet schematic diagram.Wherein, 10 and 11 several adopt is respectively indicated
Card device power interface and power switch connect 5V DC power supply, 2 core interfaces；12 be data collection output mouth, is connected to meter
Calculation machine terminal USB interface；13 indicate that synchronization signal triggers interface, 6 mouthfuls of photosynthesis device of connection detection；14 indicate data collection terminal
Mouthful, the photoelectric conversion signal for acquiring BOTDR system and Φ-OTDR system monitoring arrives, and give to terminal.Pass through
The processing of computer obtains the warm change/strain or vibration situation of change of testing fiber, and shows in terminal.
As shown in Figure 1, the utility model microwave receiving device is BOTDR system reception device, including polarization state disturbs
Module, broadband PD module and microwave source module, in which:
The polarization state for the local oscillator light that polarization state disturbance module separates narrow linewidth laser through fiber coupler carries out fast
Speed disturbance, to reduce influence of the polarization state to system performance of light；
Broadband PD module is electrooptical device, is converted to for export circulator backwards to Brillouin scattering optical signal
Electric signal；
Microwave source module, the Brillouin scattering power spectrum for exporting broadband PD module carry out frequency sweep, filtering, amplification,
To obtain the power signal of each frequency.
As shown in figure 5, being the microwave receiving device cabinet schematic diagram of the utility model.Wherein, 15 and 16 respectively indicate it is micro-
Wave receiving device power interface and power switch connect 12V DC power supply, 12 core interfaces；17 indicate microwave source parameter setting USB
Interface is connected to terminal and is configured；18 indicate back-scattering light light inlet, connect 9 mouthfuls of circulator device；19 indicate
Local oscillator light light inlet, connection detect 4 mouthfuls in photosynthesis device；The photoelectric conversion signal monitored in 20 expression BOTDR systems
Delivery outlet, connection number adopt 14 mouthfuls of card device.
The detector assembly of the utility model is Φ-OTDR system reception device, in the present embodiment, using APD detector,
For the conversion of photosignal, the back rayleigh scattering optical signal that circulator exports is converted into electric signal.
As shown in fig. 6, being the detector assembly cabinet schematic diagram of the utility model.Wherein, 21 and 22 detection is respectively indicated
Device installation's power source interface and power switch connect 5V DC power supply, 2 core interfaces；The light monitored in 23 expression Φ-OTDR systems
Electric conversion signal delivery outlet, connection number adopt 14 mouthfuls of card device；24 indicate back-scattering light light inlet, connect circulator device 9
Mouthful.
As shown in fig. 7, being the general supply schematic device of the utility model.Wherein, 25 and 26 general supply dress is respectively indicated
Set 220V AC power interface and power switch；27 indicate 12V DC electricity output mouth, 9 cored structures；28 indicate that 12V DC electricity is defeated
Outlet, 12 cored structures；29 and 30 be 5V direct current delivery outlet, 2 cored structures.
As shown in figure 8, the sound field disturbance event carton and crate body schematic diagram used for the utility model Φ-OTDR system.Wherein,
31 and 32 respectively indicate sound field disturbance event box power interface and power switch, connect 220V AC voltage.33 be vibration event
Parameter setting and display window；34 and 35 be respectively that sensor fibre enters fine mouth and outlet.The utility model proposes sound field disturb
Dynamic event box, it is preferable that it is generated and is vibrated using piezoelectric ceramics, built-in function generator and driving circuit, choosing multiple waveform,
Settable different frequency and different amplitudes.
As shown in figure 9, the warm change event box schematic diagram used for the utility model BOTDR system.Wherein, 36 and 37 difference
It indicates warm change event box power interface and power switch, connects 220V AC voltage.38 be temperature display window, after power-up, thing
Water in part box heats automatically, and real-time display temperature information；39 and 40 be respectively that sensor fibre enters fine mouth and outlet.
As shown in Figure 10, block diagram is connected for the Φ-OTDR experimental system of the utility model.Wherein, white circle is SMA wire
Wire code, gray circles are optical patchcord wire code, and black circles are power supply electrical wire wiring mark.Experimenter only needs root
Photosynthesis device, circulator device, general supply device, number, which will be detected, according to block diagram shown in Figure 10 adopts card device and detector assembly
It is placed into corresponding position, corresponding cable is chosen and is attached the interface of the identical number of same color between each device, it can be quick
Building for the single-point vibration experiments system of Φ-OTDR is completed, to carry out the relevant experiment test of Φ-OTDR system.The behaviour
Make to be that cable 1. is attached by number according to Fig. 1.
As shown in figure 11, the BOTDR experimental system of the utility model connects block diagram.Wherein, white circle is SMA wire wiring
Mark, gray circles are optical patchcord wire code, and black circles are power supply electrical wire wiring mark.Experimenter only needs according to figure
Block diagram shown in 11 will detect photosynthesis device, circulator device, general supply device, number adopts card device and detector assembly is put
It sets to corresponding position, chooses corresponding cable and be attached the interface of the identical number of same color between each device, it can be quickly complete
It is built at the single-point vibration experiments system of Φ-OTDR, to carry out the relevant experiment test of BOTDR system.The operation is
It by number is that cable 1. disconnects according to Fig. 1, connection number is cable 2..
The above is only some embodiments of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of emerging system device based on BOTDR and Φ-OTDR, which is characterized in that including detecting photosynthesis device, annular
Device device, sensor fibre, microwave receiving device, detector assembly, number adopt card device, general supply device and event box；The spy
It surveys photosynthesis device, circulator device, sensor fibre, microwave receiving device, detector assembly, number and adopts card device, general supply dress
It sets and is each located in independent cabinet with event box, the cabinet is equipped with interface；The connection relationship of the emerging system device
In first state or the second state；
The detection photosynthesis device exports modulated amplified light pulse, into circulator device, the circulator device
The first light-emitting window connection sensor fibre one end, the other end connection event box of the sensor fibre；The circulator device
The second light-emitting window connect the detector assembly in the first state, the output end of the detector assembly connects the number and adopts
Card device；Second light-emitting window of the circulator connects the microwave receiving device, the microwave receiving dress in the second condition
The output end set connects the number and adopts card device；The detection photosynthesis device is exported in the second condition described in the entrance of local oscillator light
Microwave receiving device；
The detection photosynthesis device includes light source module, light pulse modulation module and EDFA module；The light source module, Guang Mai
Modulated module and EDFA module are sequentially connected；
The microwave receiving device includes polarization state disturbance module, broadband PD module and microwave source module；The light polarization
The first input end of state disturbance module receives the local oscillator optical signal that light source module directly exports in detection photosynthesis device；Institute
State the optical signal that broadband PD module receives the second output terminal from circulator device；First output end of the broadband PD module
The second input terminal of the polarization state disturbance module is connected, the second output terminal of the broadband PD module connects the microwave source
Module；The output end of the microwave source module connects the number and adopts card device.
2. a kind of emerging system device based on BOTDR and Φ-OTDR as described in claim 1, which is characterized in that the light
Source module does light source using 16dBm narrow linewidth laser, and the optical signal issued is divided into two beam of 50:50 through fiber coupler.
3. a kind of emerging system device based on BOTDR and Φ-OTDR as described in claim 1, which is characterized in that the light
Pulse modulation module uses acousto-optic modulator.
4. a kind of emerging system device based on BOTDR and Φ-OTDR as described in claim 1, which is characterized in that the biography
It is photosensitive fine using G.652 single mode optical fiber.
5. a kind of emerging system device based on BOTDR and Φ-OTDR as described in claim 1, which is characterized in that the spy
It surveys device device and uses APD detector, for the conversion of photosignal, the back rayleigh scattering optical signal of circulator output is converted
For electric signal.
6. a kind of emerging system device based on BOTDR and Φ-OTDR as described in claim 1, which is characterized in that the thing
Part box includes sound field disturbance event box, and the sound field disturbance event box generates vibration using piezoelectric ceramics, and built-in function is sent out
Raw device and driving circuit.
7. a kind of for loading the encapsulating structure of emerging system device described in claim 1, which is characterized in that including detecting light
Synthesizer cabinet, circulator device box, number adopt card device cabinet, microwave receiving device cabinet, detector assembly cabinet, total
Power supply device, sound field disturbance event carton and crate body, warm change event carton and crate body；
The detection photosynthesis device box includes: equipped with interface
Photosynthesis installation's power source interface (1) and detection photosynthesis installation's power source switch (2) are detected, light source module, light are internally connected
Pulse modulation module and EDFA module, externally for connecting 12V DC power supply, the interface is 9 core interfaces；
The parameter setting USB interface (3) of EDFA module internally connects EDFA module, externally for connecting terminal；
Local oscillator light light-emitting window (4), internally connects light source module, externally connects the sheet of polarization state disturbance module in the second condition
It shakes light light inlet (19)；
EDFA light-emitting window (5) internally connects EDFA module output end, the light inlet (7) of external connection circulator device；
First synchronization signal triggers interface (6), is internally separately connected light source module, light pulse modulation module and EDFA module, right
Outer connection number adopts the second synchronization signal triggering interface (13) of card device, for ensuring that signal is synchronous；
The circulator device box includes: equipped with interface
Light inlet (7) is used for transmission through the amplified optical signal of EDFA module；It is connected with EDFA light-emitting window (5)；
First light-emitting window (8), is used for transmission optical signal, is connected with one end of sensor fibre；
Second light-emitting window (9) is used for transmission from the reflected back-scattering light of sensor fibre, in the first state described in connection
First back-scattering light light inlet (24) of detector assembly connects the second back of the microwave receiving device in the second condition
To scattering light light inlet (18)；
The number adopts card device cabinet equipped with interface
Number adopts card device power interface (10) sum number and adopts card device power switch (11), externally for connecting 5V DC power supply, institute
Stating interface is 2 core interfaces；
Data collection output mouth (12), externally for connecting terminal USB interface；
Second synchronization signal triggers interface (13), and the first synchronization signal of connection detection photosynthesis device triggers interface (6), is used for
Ensure that signal is synchronous；
Data collection terminal mouth (14) connects the first photoelectric conversion signal delivery outlet (23) of detector assembly under first state, uses
In the photoelectric conversion signal that acquisition Φ-OTDR system monitoring arrives；The second photoelectricity that microwave receiving device is connected under second state turns
Signal output (20) are changed, the photoelectric conversion signal monitored for acquiring BOTDR system；
The microwave receiving device cabinet interface includes:
Microwave receiving device power interface (15) and microwave receiving device power switch (16), externally for connecting 12V DC electricity
Source, the interface are 12 core interfaces；
Microwave source parameter setting USB interface (17), externally for being connected to terminal；
Second back-scattering light light inlet (18) of microwave receiving device connects the second light-emitting window (9) of circulator device；
Local oscillator light light inlet (19), connection detects the local oscillator light light-emitting window (4) of photosynthesis device in the second condition；
Second photoelectric conversion signal delivery outlet (20), connection number adopt the data collection terminal mouth (14) of card device；
The detector assembly cabinet interface includes:
Detector assembly power interface (21) and detector assembly power switch (22), externally for connecting 5V DC power supply, institute
Stating interface is 2 core interfaces；
First photoelectric conversion signal delivery outlet (23), connection number adopt the data collection terminal mouth (14) of card device；
First back-scattering light light inlet (24) of detector assembly connects the second light-emitting window (9) of circulator device；
The general supply device box interface includes:
General supply device 220V AC power interface (25) and general supply device 220V ac power switch (26)；
12V DC the first delivery outlet of electricity (27), electric first delivery outlet (27) of the 12V DC is 9 cored structures；
12V DC the second delivery outlet of electricity (28), electric second delivery outlet (28) of the 12V DC is 12 cored structures；
5V direct current delivery outlet (29,30), the 5V direct current delivery outlet (29,30) are 2 cored structures；
The sound field disturbance event carton and crate body includes: equipped with interface
Sound field disturbance event box power interface (31) and sound field disturbance event box power switch (32), externally for connecting 220V friendship
Galvanic electricity pressure；
Vibration event parameter setting and display window (33)；
The first of sensor fibre enters fine mouth (34) and the first outlet (35)；
The temperature change event carton and crate body includes: equipped with interface
Warm change event box power interface (36) and warm change event box power switch (37), externally for connecting 220V AC voltage；
Temperature display window (38) is used for displays temperature；
The second of sensor fibre enters fine mouth (39) and the second outlet (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413419.XU CN209166470U (en) | 2018-08-30 | 2018-08-30 | A kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413419.XU CN209166470U (en) | 2018-08-30 | 2018-08-30 | A kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209166470U true CN209166470U (en) | 2019-07-26 |
Family
ID=67330481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821413419.XU Expired - Fee Related CN209166470U (en) | 2018-08-30 | 2018-08-30 | A kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209166470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121873A (en) * | 2019-12-30 | 2020-05-08 | 武汉奥旭正源电力科技有限公司 | Distributed optical fiber sensing device |
| CN112697180A (en) * | 2020-11-27 | 2021-04-23 | 南京大学 | Fusion type distributed optical fiber sensing system and method for simultaneously measuring temperature and vibration |
-
2018
- 2018-08-30 CN CN201821413419.XU patent/CN209166470U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121873A (en) * | 2019-12-30 | 2020-05-08 | 武汉奥旭正源电力科技有限公司 | Distributed optical fiber sensing device |
| CN112697180A (en) * | 2020-11-27 | 2021-04-23 | 南京大学 | Fusion type distributed optical fiber sensing system and method for simultaneously measuring temperature and vibration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107917738A (en) | A kind of while measurement temperature, strain and the distributed optical fiber sensing system of vibration | |
| CN207850562U (en) | Multifunctional optical fiber distributed on line monitoring equipment | |
| CN107340077B (en) | Sensing method and sensing system for full-distributed optical fiber temperature and stress | |
| CN102937416B (en) | A kind of fully distributed fiber switched based on orthogonal polarisation state strains and vibration sensing method and device | |
| CN103591971B (en) | A kind of localization method of fiber grating | |
| CN104677396A (en) | Dynamic distributed Brillouin optical fiber sensing device and method | |
| CN109595470B (en) | Distributed pipeline detection method | |
| CN101246026A (en) | Method and device for optical sensor inquiry system | |
| CN107036733B (en) | The many reference amounts Distributed Measurement System and measurement method of twin-core dim light grid array based on dark pulse light source | |
| CN110470329A (en) | It is a kind of based on the real-time optical fiber Brillouin time-domain analysis sensor-based system more pumped | |
| CN103076112B (en) | The parameter measuring apparatus of single-side belt distributed optical fiber sensing system | |
| CN102829806A (en) | Optical fiber sensing system based on phase-shifted optical fiber grating | |
| CN105784190B (en) | A kind of differential type temperature sensor based on stimulated Brillouin effect | |
| CN209166470U (en) | A kind of emerging system device and encapsulating structure based on BOTDR and Φ-OTDR | |
| CN108844614A (en) | Chaos Brillouin light domain of dependence analysis system and method based on phase spectrometry | |
| CN207232005U (en) | Multiplexing fiber-optic gas sensing system based on weak optical fiber Bragg grating and optical time domain reflectometer | |
| CN105092015A (en) | Non-contact fiber vibration sensing system and method | |
| CN108254062A (en) | A kind of phase sensitive optical time domain reflection vibration detection device based on chaotic modulation | |
| CN101762342A (en) | Parallel multi-point type optical fiber temperature detection method and sensor | |
| CN203642943U (en) | High spatial resolution light frequency domain reflectometer system based on four-wave mixing process | |
| CN110595599B (en) | Method for reducing polarization fading of optical fiber vibration system and detection system applying same | |
| CN102269911A (en) | Optical demodulation method based on OTDR (Optical Time Domain Reflectometry) technology and optical demodulation device thereof | |
| CN103674082A (en) | High-spatial-resolution optical frequency domain reflectometer system based on four-wave mixing process | |
| CN205912061U (en) | Optical fiber fault detecting system | |
| CN107167225B (en) | A kind of distributed optical fiber stress and the sensor-based system and its method for sensing of vibration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 Termination date: 20210830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |