CN205483247U - Ultrasonic wave collection system based on optic fibre EFPI sensor - Google Patents
Ultrasonic wave collection system based on optic fibre EFPI sensor Download PDFInfo
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- CN205483247U CN205483247U CN201521070799.8U CN201521070799U CN205483247U CN 205483247 U CN205483247 U CN 205483247U CN 201521070799 U CN201521070799 U CN 201521070799U CN 205483247 U CN205483247 U CN 205483247U
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Abstract
The utility model discloses an ultrasonic wave collection system based on optic fibre EFPI sensor, its including: the shell is provided with a plurality of optical fiber interfaces that are used for connecting optic fibre EFPI sensor on this shell, and laser instrument for produce the light source signal, optical divider is connected through optic fibre and this laser instrument, a plurality of optical circulators, the input port of these a plurality of optical circulators through the parallel multichannel optic fibre that sets up with optical divider connects, and the probe end mouth on these a plurality of optical circulators is through the multichannel optic fibre of parallel setting and the optic fibre interface connection who corresponds, a plurality of photoelectric converter, quantity with the optical fiber interface is the same, and the output port on these a plurality of optical circulators is connected with the photoelectric converter who corresponds through the parallel multichannel optic fibre that sets up, the signal acquisition circuit board for accept the signal of telecommunication that forms with this photoelectric converter conversion of processing and be connected with outside communication. Applicable multiple industrial equipment of this ultrasonic wave collection system and the quick ultrasonic signal of the high frequency monitoring in field under water.
Description
Technical field
This utility model belongs to the technical field of ultrasonic signal collection and detection, particularly to one based on light
Fine EFPI (extrinsic Fabry-Perot interferometer, external cavity type Fabry Perot interference-type
Sensor) sensor carries out the device of ultrasonic signal collection.
Background technology
At present both at home and abroad industrial equipment ultrasonic signal monitoring has the multiple method, piezoelectric supersonic method detection method to be
Most popular method, but sensor is attached on device housings, the ultrasonic signal of its detection device interior,
It is not easily susceptible to the interference of electromagnetic noise, but sensitivity is the highest.Also have and piezoelectric transducer is placed on device housings
Inside, detection ultrasonic signal in a liquid, but detect spirit due to piezo ultrasound transducers in a liquid
Sensitivity is the highest, can not be placed in highfield simultaneously, or band high voltage position measures so that it is detection
Method is restricted.
Light supercritical ultrasonics technology sensor has that volume is little, it is low to be lost, disturb little, good insulation preformance and anti-flaming anticorrosion
Erosion advantage and be with a wide range of applications.Light supercritical ultrasonics technology includes that fiber grating surveys supersonic vibration method and light
The fine interference surveys supersonic vibration method, and fiber optic interferometric method surveys supersonic vibration method three kinds of ways: fiber optic Michelson
(Michelson) interferometric method, optical fiber mach-Ze Deer interfere (Mach-Zehnder) method and Fabry Perot
(Fabry-Perot) interferometric method.The sensitivity of Michelson method detecting system is the highest, and in ultrasonic propagation
Multipath between inscribe；The response of optical fiber mach-Ze Deer interferometric method frequency, demodulation frequency is not high enough, structure is complicated, to setting
Standby requirement height；In Fiber Optic Sensor fabricbase-Paro rule has simple in construction, volume is little, and high reliability is highly sensitive
The advantages such as degree, quickly responds, and capacity of resisting disturbance is strong, by the concern that people are universal.
Optical fiber EFPI (the extrinsic Fabry-Perot of research in currently available technology
Interferometer, external cavity type Fabry Perot interferometric sensor), be mainly used in temperature, strain,
The measurement of the gradual amount such as pressure, is still not suitable for the detection of high frequency quick ultrasonic signal.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of based on making
With optical fiber EFPI, (extrinsic Fabry-Perot interferometer, external cavity type Fabry Perot is done
Relating to type sensor) sensor carries out the device of ultrasonic signal acquisition, fast to be applicable to multiple industrial equipment high frequency
Speed ultrasonic signal monitoring, and can be widely applied to multi-field underwater ultrasound signal monitoring.
In order to solve above-mentioned technical problem, the technical scheme that this utility model provides is as follows:
The ultrasonic collecting device based on optical fiber EFPI sensor that this utility model relates to includes with bottom
Point:
Shell, is provided with multiple optical fiber interface for connecting optical fiber EFPI sensor on this shell；And
Arrange in the enclosure:
Laser instrument, is used for producing light signal；
Optical branching device, is connected with this laser instrument by optical fiber；
Multiple optical circulators, quantity is identical with described optical fiber interface, and the input port of the plurality of optical circulator leads to
Crossing parallel arrangement of multi-channel optical fibre to be connected with described optical branching device, the detection port on the plurality of optical circulator leads to
Cross parallel arrangement of multi-channel optical fibre to connect with corresponding optical fiber interface；
Multiple optical-electrical converters, quantity is identical with described optical fiber interface, the outfan on the plurality of optical circulator
Mouth is connected by parallel arrangement of multi-channel optical fibre and corresponding optical-electrical converter；
Signal acquisition circuit plate, converts the signal of telecommunication formed and with outward for accepting and processing this optical-electrical converter
Portion's communication connects.
Preferably, described laser instrument is narrow-band light source laser instrument, the monochromatic optical wave of this narrow-band light source laser instrument
A length of 1550nm or 1310nm.
Further, described narrow-band light source laser instrument is SLED laser instrument.
Preferably, described ultrasonic collecting device can be to multiplex ultrasonic signal synchronous collection, and described optical fiber connects
The quantity of mouth is between 1 to 16.
Further, described signal acquisition circuit plate has electronic signal processing module and for outside backstage system
The communication module of system communication and control module, this electronic signal processing module includes turning for gathering described photoelectricity
Parallel operation produce the signal of telecommunication Acquisition Circuit, for according to signal amplitude size carry out automatic gain amplification electricity
Road and analog to digital conversion circuit.
Further, described signal acquisition circuit plate is provided with the Ethernet interface for output signal, institute
State ultrasonic collecting device by this Ethernet interface output digital waveform signal and to be transferred to by Ethernet
Background system.
Further, described ultrasonic collecting device also includes the power adaptation plate that can connect external power source, this electricity
Source adaptation board is for powering to described laser instrument and signal acquisition circuit plate.
Further, described power adaptation plate is also associated with a power supply indicator being arranged on shell.
Preferably, described optical-electrical converter is PIN photodiode.
The beneficial effects of the utility model are that it can easily be applied to multi-channel optical fibre EFPI sensor, carry out
The collection of ultrasonic signal, process and transmit, by output digit signals to background system, in order to backstage
Signal data is processed by system, detects automatically and diagnoses.Its technical advantage be mainly reflected in
Under several aspects:
1, this ultrasonic collecting device has highly integrated, the feature such as simple installs, easy to operate.By key light
Road device (in addition to sensor) and multiple circuit submodules etc. are highly integrateable in shell, form all-in-one,
Can install easily under the conditions of being applied to various complex environment.
2, this ultrasonic collecting device has highly sensitive, the feature that capacity of resisting disturbance is strong.The design of this device makes
With optical fiber EFPI sensor, it is ensured that the high sensitivity of signal source, device itself has multistage amplification electricity simultaneously
Road, and amplification is automatically adjusted according to signal amplitude, can take into account different size of input signal simultaneously.
The design of this device itself reaches EMC4 level level, and in the case of various strong electromagnetic, device performance will not
It is affected.
3, this ultrasonic collecting device exports digital waveform signal by Ethernet interface, can realize remote online
Monitoring.This device is designed as current blanket Ethernet interface mode, exports digital wave to background system
Shape signal, can directly by the multiple network mode such as LAN, external the Internet, WIFI, serial ports be direct-connected,
Realize data and be transferred to background system.
Accompanying drawing explanation
Fig. 1 is the composition signal of the ultrasonic collecting device based on optical fiber EFPI sensor related in embodiment
Figure；
Fig. 2 is the electrical block diagram on the signal acquisition circuit plate related in embodiment.
Detailed description of the invention
The most just with specific embodiment to the structure of the ultrasonic collecting device involved by this utility model and work
Principle is further elaborated:
Ultrasonic collecting device bag based on optical fiber EFPI sensor shown in Figure 1, that the present embodiment provides
Include laser instrument 1, the optical branching device 2 on N road, N number of optical circulator 4, N number of optical fiber interface 5, N number of can be divided into
Optical-electrical converter 9, one block signal collecting circuit board 8, shell 10 etc., optical circulator 4 and optical-electrical converter 9
Corresponding, its quantity N is identical with the quantity of optical fiber interface 5, the signal individually quilt in each optical fiber interface 5
Gather, non-interference.In addition to EFPI sensor, above optical processor and circuit devcie are the most integrated
In shell 10, simple and compact for structure.
Described laser instrument 1 is connected with optical branching device 2 by optical fiber 3, is used for producing light signal.Light branch
Device 2 is connected with the input port 41 of N number of optical circulator 4 by the parallel arrangement of single-mode fiber in N road 3；N
The detection port 42 of individual optical circulator 4 is by the parallel arrangement of single-mode fiber in N road 3 and crust of the device 10
Different optical fiber interfaces 5 connect, optical fiber interface 5 is for connecting the optical fiber EFPI sensor of outside；N number of
The output port 43 of optical circulator 4 passes through above the parallel single-mode fiber in N road 3 and signal acquisition circuit plate 8
N number of optical-electrical converter 9 corresponding be connected, optical circulator 4 is that the incident illumination only allowing certain end is from determining port
Input and reflect the non-reciprocal device that light exports from another port, for ensureing that optical fiber is propagated along specified path,
Therefore need to use optical circulator 4.In the present embodiment in order to simplify structure, multiple optical-electrical converters 9 weld successively
Being connected on signal acquisition circuit plate 8, signal acquisition circuit plate 8 is used for accepting and process this optical-electrical converter 9
Convert the signal of telecommunication formed and be connected with external communication.
As the preferred version in the present embodiment, described laser instrument 1 is narrow-band light source laser instrument, this arrowband
A length of 1550nm or 1310nm of monochromatic optical wave of light source laser, described narrow-band light source laser instrument preferably employ into
SLED laser instrument.Optical-electrical converter 9 prioritizing selection uses PIN photodiode, has incident light quantity and defeated
Going out the good linearity of electric current, fast response time, output error is little, the output variation caused by variation of ambient temperature
Little, make simple, the feature that reliability is high.Above-mentioned ultrasonic collecting device can be same to multiplex ultrasonic signal
Step gathers, and quantity N of the most described optical fiber interface is between 1 to 16, and particular number can be according to sensing
The practical situation of device and set.
Shown in Figure 2, described signal acquisition circuit plate 8 is that the highly integrated signal of multiple functional module is adopted
Collection board, it has the communication module 14 that electronic signal processing module 12 communicates with for outside background system
And control module 13, this electronic signal processing module 12 includes for gathering what described optical-electrical converter 9 produced
The Acquisition Circuit 15 of the signal of telecommunication, for carrying out amplifying circuit 16 and the mould of automatic gain according to signal amplitude size
Number conversion circuit 17, analog to digital conversion circuit 17 converts the digital waveform signal forming bandpass filtering.Wherein signal
Gather, amplifier section uses three grades of amplifications, and amplification is configurable and can be automatically adjusted.
Referring back to shown in Fig. 1, described signal acquisition circuit plate 8 is provided with the ether for output signal
Network interface 11, described ultrasonic collecting device can be exported digital waveform signal by this Ethernet interface 11 and be led to
Cross Ethernet and be transferred to background system.This ultrasonic collecting device also includes that the power supply that can connect external power source is fitted
Matching board 7, power adaptation plate 7 is also associated with a power supply indicator 6 being arranged on shell 10, power adaptation
Plate 7 is supplied to narrow-band light source laser instrument 1, signal acquisition circuit plate 8, power supply indicator 6 by 3 power lines
Electricity.Signal acquisition circuit plate 8 Ethernet interface 11 above mainly has two connection terminal bases directly to assemble
On crust of the device 10, one is Ethernet RJ45 terminal base, leads to for the data being responsible for background system
News；Another is the RS232 socket of DB9, and the firmware for device itself is downloaded and configuration.
This utility model proposes first by the above-mentioned described light source of corresponding multi-channel optical fibre EFPI sensor, light
The functional devices such as processing apparatus, signals collecting, analog digital conversion, data communication, acquisition controlling, power adaptation
Concentration is assemblied in same shell, harvester that form a functional independence, that be easily installed.Optical fiber
EFPI sensor is directly connected to the optical fiber interface of ultrasonic collecting device, is not needing any other auxiliary
Device gets final product work.The output signal of ultrasonic collecting device, for treated digital waveform signal, can
To transmit in Ethernet easily, it is simple to the data of background system process and diagnostic analysis.
Above example is only this specification for ease of understanding the part embodiment party cited by utility model content
Formula, any restriction not carried out the technical solution of the utility model, also not all can embodiment poor
Lift, therefore every any slight improvements or equivalence being made structure of the present utility model, flow process or step is replaced
In generation, within should be included in its protection domain.
Claims (9)
1. a ultrasonic collecting device based on optical fiber EFPI sensor, it is characterised in that including:
Shell, is provided with multiple optical fiber interface for connecting optical fiber EFPI sensor on this shell；And set
Put in the enclosure:
Laser instrument, is used for producing light signal；
Optical branching device, is connected with this laser instrument by optical fiber；
Multiple optical circulators, quantity is identical with described optical fiber interface, and the input port of the plurality of optical circulator passes through
Parallel arrangement of multi-channel optical fibre is connected with described optical branching device, and the detection port on the plurality of optical circulator leads to
Cross parallel arrangement of multi-channel optical fibre to connect with corresponding optical fiber interface；
Multiple optical-electrical converters, quantity is identical with described optical fiber interface, the output port on the plurality of optical circulator
Connected with corresponding optical-electrical converter by parallel arrangement of multi-channel optical fibre；
Signal acquisition circuit plate, for accept and process this optical-electrical converter convert formed the signal of telecommunication and with outside
Communication connects.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 1, its feature
It is: described laser instrument is narrow-band light source laser instrument, and the monochromatic optical wave of this narrow-band light source laser instrument is a length of
1550nm or 1310nm.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 2, its feature
It is: described narrow-band light source laser instrument is SLED laser instrument.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 1, its feature
Be: described ultrasonic collecting device can to multiplex ultrasonic signal synchronous collection, described optical fiber interface
Quantity is between 1 to 16.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 1, its feature
It is: there is on described signal acquisition circuit plate electronic signal processing module and lead to for outside background system
The communication module of letter and control module, this electronic signal processing module includes for gathering described opto-electronic conversion
Device produce the signal of telecommunication Acquisition Circuit, for according to signal amplitude size carry out automatic gain amplification electricity
Road and analog to digital conversion circuit.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 5, its feature
It is: on described signal acquisition circuit plate, be provided with the Ethernet interface for output signal, described super
After sound collecting device can be exported digital waveform signal by this Ethernet interface and is transferred to by Ethernet
Platform system.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 1, its feature
Being: described ultrasonic collecting device also includes connecting the power adaptation plate of external power source, this power supply is fitted
Matching board is for powering to described laser instrument and signal acquisition circuit plate.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 7, its feature
It is: described power adaptation plate is also associated with a power supply indicator being arranged on shell.
Ultrasonic collecting device based on optical fiber EFPI sensor the most according to claim 1, its feature
It is: described optical-electrical converter is PIN photodiode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521070799.8U CN205483247U (en) | 2015-12-17 | 2015-12-17 | Ultrasonic wave collection system based on optic fibre EFPI sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521070799.8U CN205483247U (en) | 2015-12-17 | 2015-12-17 | Ultrasonic wave collection system based on optic fibre EFPI sensor |
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| CN205483247U true CN205483247U (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895902A (en) * | 2015-12-17 | 2017-06-27 | 珠海多监测科技有限公司 | Ultrasonic collecting device based on optical fiber EFPI sensors |
| CN108445362A (en) * | 2018-03-29 | 2018-08-24 | 国网上海市电力公司 | Shelf depreciation ultrasonic signal detecting system based on optical fiber sensing technology and method |
-
2015
- 2015-12-17 CN CN201521070799.8U patent/CN205483247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895902A (en) * | 2015-12-17 | 2017-06-27 | 珠海多监测科技有限公司 | Ultrasonic collecting device based on optical fiber EFPI sensors |
| CN108445362A (en) * | 2018-03-29 | 2018-08-24 | 国网上海市电力公司 | Shelf depreciation ultrasonic signal detecting system based on optical fiber sensing technology and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170526 Address after: 519000 No. 8, No. 9 Road, hi tech Zone, Guangdong, Zhuhai Patentee after: Yado Monitoring Technology Co., Ltd. Address before: No. nine, No. 8, science and technology zone, Xiangzhou hi tech Zone, Guangdong, Zhuhai Patentee before: Yang Zhiqiang |