CN205449104U - Multi-sensing device based on one-core optical fiber - Google Patents
Multi-sensing device based on one-core optical fiber Download PDFInfo
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- CN205449104U CN205449104U CN201620106282.8U CN201620106282U CN205449104U CN 205449104 U CN205449104 U CN 205449104U CN 201620106282 U CN201620106282 U CN 201620106282U CN 205449104 U CN205449104 U CN 205449104U
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Abstract
The utility model relates to a many Sensing devices based on a core optic fibre, including Sensing front end, programmable logic device, DSP subassembly, analog-to-digital conversion chip, main control unit etc. are the core device of wisdom optic fibre Sensing network IFSN (intelligent Fiber Sensing network) system. The device provided by the utility model can come the modulation by a core optical fiber transmission's light signal based on different multiplexing techniques according to different signals. Sensing a plurality of signals is realized based on a core optical fiber; in addition, the core optical fiber can simultaneously perform distributed sensing and point-type sensing, and can also be used for transmitting communication signals or used as an energy supplement device to provide energy for the active sensor, so that the multi-purpose of the core optical fiber is realized, and the optical fiber resource is effectively saved; in addition, the management and monitoring functions of the traditional communication optical cable are fully considered, and the existing optical cable is convenient to adopt in the field of practical application, so that a large amount of cost for laying the optical cable is saved.
Description
Technical field
This utility model relates to sensory field of optic fibre, a kind of many sensing devices based on single optical fibre.
Background technology
Optical fiber has the advantages such as working band width, dynamic range be big, is suitable for remote measuring and controlling, is a kind of excellent low loss line.Additionally, under certain condition, optical fiber is particularly easy to accept the loading of measured signal or field, because of and be a kind of excellent sensing element.Owing to optical fiber itself is not charged, volume is little, light weight, flexible, electromagnetism interference, and radiation resistance is good, be particularly suitable for inflammable, explosive, space is strictly limited and uses under the adverse circumstances such as strong electromagnetic.Therefore, optical fiber sensing technology is greatly paid attention to once coming out, and almost obtains research and application in every field, becomes the guide of sensing technology, promote sensing technology flourish.
Fibre Optical Sensor, comprises perception and two kinds of functions of transmission of signal (measured) to external world.So-called perception (or sensitive), refer to that outer signals makes the physical features parameter of the light wave of transmission in optical fiber according to its Changing Pattern, change such as intensity (power), wavelength, frequency, phase place and polarization state etc., the change of " perception " outer signals is got final product, caused by this " perception " the substantially outer signals light wave modulated in real time to propagating in optical fiber by measuring the change of corresponding light parameter；So-called transmission, refers to that the light wave transmissions modulated by outer signals is detected to photo-detector by optical fiber, outer signals is extracted from light wave and carry out data process on demand, namely demodulating.Therefore, optical fiber sensing technology includes the modulation technique (or loading technique) of the light wave parameter in technology of both modulation and demodulation, i.e. outer signals (measured) how modulation optical fiber and how to extract the demodulation techniques (or detection technique) of outer signals (measured) from the light wave modulated.
The position that light wave parameter in sensor fibre is modulated by outer signals is referred to as modulator zone, according to the relation of modulator zone Yu optical fiber, modulation can be divided into two big classes.One class is functional type modulation, and modulator zone is positioned at optical fiber, and light wave is implemented modulation by directly changing some transmission feature parameter of optical fiber by outer signals.This kind of Fibre Optical Sensor is referred to as functional type (FunctionalFiber is called for short FF type) or Intrinsical Fibre Optical Sensor, also becomes internal modulation type sensor, and optical fiber is with tool " biography " and " sense " two kinds of functions.Another kind of modulate for non-functional type, modulator zone is outside optical fiber, the light wave enforcement entered in optical fiber is modulated by outer signals by additional modulating device, this kind of Fibre Optical Sensor is referred to as non-functional type (NonFunctionalFiber, it is called for short NFF) or extrinsic type Fibre Optical Sensor, optical fiber only plays the effect of transmission light wave, referred to as Optic transmission fiber, not there is seriality, therefore non-functional optic fiber sensor is also referred to as light transmission type Fibre Optical Sensor or external modulation Fibre Optical Sensor.
The situation of change of the physical features parameter according to the light wave modulated by outer signals, can be divided into five types such as the modulation of light intensity modulation, light frequency modulation, optical wavelength, light phase modulation and Polarization Modulation by light wave modulation.Due to existing any photo-detector all can only the intensity of response light, and can not will be converted into strength signal by certain switch technology directly in response to the frequency of light, wavelength, phase place and polarization modulation signals, could receive for photo-detector, it is achieved detect.
But, existing fiber sensing product is all the sensing realizing a kind of type signal on a fibre core, when signal with different type to be detected, needs to use many fibre cores, wastes fibre core resource.
Summary of the invention
To the problems of the prior art, this utility model provides a kind of many sensing devices based on single optical fibre.
For solving problem above, solution of the present utility model is a kind of many sensing devices based on single optical fibre, including sensing front end (1), PLD (2), DSP assembly (3), modulus conversion chip (4), master controller (5), hard disk (6), internal memory (7), flash memory (8), Ethernet access controller MAC (9), Ethernet physical interface transceiver PHY (10), electrical level transferring chip (11), serial ports (12)；
Described sensing front end (1) receives signal and carries out multiplexing, modulation；
Described PLD (2) transmits data to DSP assembly (3) by HSSI High-Speed Serial Interface；
Described DSP assembly (3) is connected with PLD (2) by HSSI High-Speed Serial Interface, and line algorithm of going forward side by side processes；
Described modulus conversion chip (4) is connected with PLD (2), for the data that sensing front end (1) transmits are carried out signal conversion；
Described master controller (5) is connected with described DSP assembly (3), is used for controlling the work of each module.
The functional module of described sensing front end (1) includes DVS, DTS, BOTDA, RFTS, OLP and AODN etc., and is applied to the common functional module of optical communication system, and closes the WDM module used by wave separater, the optical switch module of space division multiplexing.
This utility model many sensing devices based on single optical fibre are the core apparatus of wisdom optical fiber sensing network IFSN (IntelligentFiberSensingNetwork) system; sensing is combined together with communicating; fiber optic network is regarded as and is distributed the widest sensor in the world; by the way of integration main frame; health status (RFTS) by fiber optic network includes the perception system of Internet of Things in, provides intelligent management (AODN) and protection (OLP) system of telecommunication optical fiber simultaneously.Further, use the Distributed Optical Fiber Sensing Techniques that industry is advanced, also include optical fiber temperature (DTS) on the way, the vibration ambient parameter such as (DVS), stress deformation (BOTDA) in perception system.The physical quantity such as gas, illumination also can include investigative range in, provides solid foundation for cheap, efficient, energy-conservation, reliable, intelligent thing network sensing layer, can support that a large amount of Internet of Things is applied, such as fire prevention, building accident antitheft, anti-, Geological disaster prevention etc..RFTS (RemoteFiberTestSystem) optical fiber automatic monitoring system be a set of for fiber optic network management and safeguard intelligent system. she can real-time judge optical fiber quality, location fault accurate place.It utilizes computer technology, database technology, the network communications technology and OTDR measuring technology, and combine the system that GIS platform is integrated, its optical fiber in automatically test transmission line (this refer to all optical fiber from optical sender to photoreceiver and the jumper of process), the safe and highly efficient operation for fiber optic network provides safeguard.
Communication line, when fiber optic network fault occurs, is automatically switched to the protection equipment of reserve cable by OLP (OpticalLineProtection).OLP provides the link protection mode of 1+1,1:1, automatically compensates the optical properties such as the decay of active and standby route, dispersion, and can form linkage scheme with RFTS, saves clients investment, improves network flexibility.Its alternate routing can be as the sensor information of single optical fibre.
AODN (AdvancedOpticalDistributedNetwork) uses RFID label tag to replace traditional papery innovatively, and RFID reader is embedded in distribution facility, releases AODN intelligence distribution solution.Along with fiber optic network lays in a large number, the management of magnanimity optical fiber becomes new challenge.Traditionally on paper tag control mode error rate is high, and construction management difficulty, the life-span is short, and maintenance efficiency is low.It is no longer appropriate for the management of jumbo optical fiber distributing.The frame that makes AODN can read the optical fiber information being inserted on each light mouth, such that it is able to manage intelligently and distribute fiber resource.
DTS (DistributedTemperatureSensor) utilizes the Raman effect in optical fiber, detects the profiling temperatures along optical fiber.Detection range is up to 20 kilometers, and temperature resolution 1 DEG C, range resolution ratio is up to 1 meter.This product can be widely used for the fire prevention of the distance facilities such as cable, tunnel, pipeline, the application such as take precautions against natural calamities.Optical fiber also can coil laying in building, all has wide practical use in fields such as wisdom building, wisdom machine room, energy conservation, lean storages.
DVS (DistributedVibrationSensor) utilizes the principle of interference in optical fiber, detects the vibration signal along optical fiber and is distributed situation.Detection range is up to 40 kilometers, and range resolution ratio is up to 10 meters.This product provides advanced algorithm for pattern recognition simultaneously, differentiates the danger signal such as excavator, spade, crawler belt.This product can be widely used for the fields such as long-distance pipe, communication pipe, security protection circumference, highway, railway, Community Safety, plays the effect such as anti-intrusion, tamper-proof, disaster alarm.
BOTDA (BrillouinOpticalTimeDomainAnalysis) technology is that the frequency displacement of Brillouin signal light reflected by analyzing optical fiber each point determines that fibre strain along the line is distributed, have longer monitoring distance, can reach tens kilometers of kilometers the most up to a hundred, solve distance (> 20KM) distributed strain measure a difficult problem best approach, in terms of bridge, high tension cable, oil and gas pipes, especially have good application prospect.
As improvement, the signal that described sensing front end (1) receives is at least one in fiber failure framing signal, temperature signal, vibration signal, pressure signal, displacement signal, gas signal.
As improvement, the multiplex technique of described sensing front end (1) is at least the one in wavelength-division multiplex technique, time-division multiplex technology, space multiplexing technique, algorithm multiplex technique.
As improvement, sensing front end (1) is to the modulation system of signal for using a light source to receive signal, and a photoreceiver carrys out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As improvement, sensing front end (1) is to the modulation system of signal for using a light source to receive signal, and multiple receivers carry out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As improvement, sensing front end (1) is to the modulation system of signal for using multiple light sources to receive signal, and a receiver carrys out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As improvement, sensing front end (1) is to the modulation system of signal for using multiple light sources to receive signal, and multiple receivers carry out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As improvement, described single optical fibre is to carry out distributed sensing and the optical fiber of point type sensing simultaneously.
As improvement, described single optical fibre can be as the energy supplement device of active sensor.
As improvement, described single optical fibre can be used to transmit signal of communication.
As improvement, the management and monitoring function of described many sensing devices compatible communication optical fiber based on single optical fibre.
From the above, it can be seen that this utility model is many sensing devices based on single optical fibre, the single optical fibre sensing to multiple signals, effectively save fiber resource can be realized.
As can be seen from the above description, this utility model single optical fibre can carry out distributed sensing and point type sensing simultaneously, can be additionally used in transmission signal of communication or provide energy etc. as energy supplement device for active sensor, realize the multipurpose of single optical fibre, the sensing to multiple signals, effectively save fiber resource is realized based on single optical fibre；Application can take into account the management and monitoring function (OLP and AODN etc.) of traditional communication optical cable, so in practical application area, it is simple to use storage after by optical cable, provided management and monitoring function, it is provided that the sensing function of environmental information.Which offers a saving to sense the great amount of cost that must lay optical cable.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of a kind of detailed description of the invention of this utility model；
Fig. 2 is the schematic diagram of a kind of detailed description of the invention of this utility model modulation, demodulation；
Fig. 3 is the schematic diagram of a kind of detailed description of the invention of this utility model modulation, demodulation；
Fig. 4 is the schematic diagram of a kind of detailed description of the invention of this utility model modulation, demodulation；
Fig. 5 is the schematic diagram of a kind of detailed description of the invention of this utility model modulation, demodulation；
Fig. 6 is the schematic diagram of this utility model distributed sensing；
Fig. 7 is each module diagram of the many sensing devices of this utility model.
Reference: 1, sensing front end, 2, PLD, 3, DSP assembly, 4, modulus conversion chip, 5, master controller, 6, hard disk, 7, internal memory, 8, flash memory, 9, Ethernet access controller MAC, 10, Ethernet physical interface transceiver PHY, 11, electrical level transferring chip, 12, serial ports.
Detailed description of the invention
In conjunction with Fig. 1, describe first specific embodiment of the present utility model in detail, but claim of the present utility model is not done any restriction.
As it is shown in figure 1, a kind of many sensing devices based on single optical fibre, including sensing front end 1, PLD 2, DSP assembly 3, modulus conversion chip 4, master controller 5, hard disk 6, internal memory 7, flash memory 8, Ethernet access controller MAC9, Ethernet physical interface transceiver PHY10, electrical level transferring chip 11, serial ports 12；
Described sensing front end 1 receives signal and carries out multiplexing, modulation；
Described PLD 2 transmits data to DSP assembly 3 by HSSI High-Speed Serial Interface；
Described DSP assembly 3 is connected with PLD 2 by HSSI High-Speed Serial Interface, and line algorithm of going forward side by side processes；
Described modulus conversion chip 4 is connected with PLD 2, for the data that sensing front end 1 is transmitted are carried out signal conversion；
Described master controller 5 is connected with described DSP assembly 3, is used for controlling the work of each module.
As improvement, the signal that described sensing front end 1 receives is at least one in fiber failure framing signal, temperature signal, vibration signal, pressure signal, displacement signal, gas signal.
As improvement, the Multiplexing module of described sensing front end 1 is at least one in Wavelength division multiplexing module, time division multiplex module, spatial reuse module, algorithm Multiplexing module.
The concrete type selecting of functional module is:
1. sensing front end 1 functional module: include DVS, DTS, BOTDA, RFTS, OLP and AODN etc., and it is applied to the common functional module of optical communication system, and close the WDM module used by wave separater, the optical switch module etc. of space division multiplexing；
2. the PLD 2 i.e. type selecting of FPGA module is the Kintex-7 of Xilinx company；
3. DSP assembly 3 uses the TMS320C6678 of TI company；
4. modulus conversion chip 4 chip uses the AD9250 of ADI company, and 2 road signal inputs, 14 precision, LVDS level exports；
5. main controller module 5: model PXIe-8135 controller.There is 2.3GHz tetra-core IntelCorei7-3610QE processor, after Win764bit system is installed, support 16GB internal memory；
In conjunction with Fig. 2-Fig. 5, describe specific embodiment of the utility model in detail, but claim of the present utility model is not done any restriction.
As in figure 2 it is shown, a kind of many sensing devices based on single optical fibre, sensing front end 1 is to the modulation system of signal for using a light source to receive signal, and a photoreceiver carrys out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As it is shown on figure 3, a kind of many sensing devices based on single optical fibre, sensing front end 1 is to the modulation system of signal for using a light source to receive signal, and multiple receivers carry out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As shown in Figure 4, a kind of many sensing devices based on single optical fibre, sensing front end 1 is to the modulation system of signal for using multiple light sources to receive signal, and a receiver carrys out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
As it is shown in figure 5, a kind of many sensing devices based on single optical fibre, sensing front end 1 is to the modulation system of signal for using multiple light sources to receive signal, and multiple receivers carry out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
In conjunction with Fig. 6, describe specific embodiment of the utility model in detail, but claim of the present utility model is not done any restriction.
As shown in Figure 6, a kind of many sensing devices based on single optical fibre, described single optical fibre is to carry out distributed sensing and the optical fiber of point type sensing simultaneously.
In conjunction with Fig. 7, describe specific embodiment of the utility model in detail, but claim of the present utility model is not done any restriction.
As shown in Figure 7; the health status (RFTS) of fiber optic network is included in the perception system of Internet of Things by a kind of many sensing devices based on single optical fibre, provides intelligent management (AODN) and protection (OLP) system of telecommunication optical fiber simultaneously.Further, use the Distributed Optical Fiber Sensing Techniques that industry is advanced, also include optical fiber temperature (DTS) on the way, the vibration ambient parameter such as (DVS), stress deformation (BOTDA) in perception system.
As improvement, described single optical fibre can be as the energy supplement device of active sensor.
As improvement, described single optical fibre can be used to transmit signal of communication.
As improvement, the management and monitoring function of described many sensing devices compatible communication optical fiber based on single optical fibre.
In sum, this utility model has the advantage that can carry out distributed sensing and point type sensing for: single optical fibre simultaneously, can be additionally used in transmission signal of communication or provide energy etc. as energy supplement device for active sensor, realize the multipurpose of single optical fibre, the sensing to multiple signals, effectively save fiber resource is realized based on single optical fibre；Application can take into account the management and monitoring function (OLP and AODN etc.) of traditional communication optical cable, so in practical application area, it is simple to use storage after by optical cable, provided management and monitoring function, it is provided that the sensing function of environmental information.Which offers a saving to sense the great amount of cost that must lay optical cable.
It is understandable that; above with respect to specific descriptions of the present utility model; it is merely to illustrate this utility model and is not limited to the technical scheme described by this utility model embodiment; it will be understood by those within the art that; in the case of the spirit and scope limited without departing from claim; this utility model can be modified or equivalent, to reach identical technique effect, but all within protection domain of the present utility model.
Claims (10)
1. many sensing devices based on single optical fibre, its feature with: include sense front end (1), PLD (2), DSP assembly (3), modulus conversion chip (4), master controller (5), hard disk (6), internal memory (7), flash memory (8), Ethernet access controller MAC (9), Ethernet physical interface transceiver PHY (10), electrical level transferring chip (11), serial ports (12)；
Described sensing front end (1) receives signal and carries out multiplexing, modulation；
Described PLD (2) transmits data to DSP assembly (3) by HSSI High-Speed Serial Interface；
Described DSP assembly (3) is connected with PLD (2) by HSSI High-Speed Serial Interface, and line algorithm of going forward side by side processes；
Described modulus conversion chip (4) is connected with PLD (2), for the data that sensing front end (1) transmits are carried out signal conversion；
Described master controller (5) is connected with described DSP assembly (3), is used for controlling the work of each module.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterised in that: the signal that described sensing front end (1) receives is at least one in fiber failure framing signal, temperature signal, vibration signal, pressure signal, displacement signal, gas signal.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterised in that: the Multiplexing module of described sensing front end (1) is at least one in Wavelength division multiplexing module, time division multiplex module, spatial reuse module, algorithm Multiplexing module.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterized in that: sensing front end (1) receives signal to the modulation system of signal for one light source of employing, one photoreceiver carrys out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterized in that: sensing front end (1) receives signal to the modulation system of signal for one light source of employing, multiple receivers carry out decomposed signal, and use multiplex technique that each receiver is respectively received signal to process.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterized in that: sensing front end (1) receives signal to the modulation system of signal for the multiple light sources of employing, one receiver carrys out decomposed signal, and uses multiplex technique that each receiver is respectively received signal to process.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterized in that: sensing front end (1) receives signal to the modulation system of signal for the multiple light sources of employing, multiple receivers carry out decomposed signal, and use multiplex technique that each receiver is respectively received signal to process.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterised in that: described single optical fibre is to carry out distributed sensing and the optical fiber of point type sensing simultaneously.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterised in that: described single optical fibre can be used to transmit signal of communication.
Many sensing devices based on single optical fibre the most according to claim 1, it is characterised in that: the management and monitoring function of compatible communication optical fiber.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487390A (en) * | 2019-09-04 | 2019-11-22 | 南昌工程学院 | A kind of distributed fiber-optic sensor monitoring management method |
| CN111953420A (en) * | 2020-07-21 | 2020-11-17 | 中国科学院深海科学与工程研究所 | Photon-carried electric energy transmission device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487390A (en) * | 2019-09-04 | 2019-11-22 | 南昌工程学院 | A kind of distributed fiber-optic sensor monitoring management method |
| CN111953420A (en) * | 2020-07-21 | 2020-11-17 | 中国科学院深海科学与工程研究所 | Photon-carried electric energy transmission device |
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