CN207456479U - A kind of fiber Bragg grating (FBG) demodulator - Google Patents
A kind of fiber Bragg grating (FBG) demodulator Download PDFInfo
- Publication number
- CN207456479U CN207456479U CN201720823677.4U CN201720823677U CN207456479U CN 207456479 U CN207456479 U CN 207456479U CN 201720823677 U CN201720823677 U CN 201720823677U CN 207456479 U CN207456479 U CN 207456479U
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- optical signal
- optical
- processing module
- 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.)
- Active
Links
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model proposes a kind of fiber Bragg grating (FBG) demodulator, including：Amplified spontaneous emission ASE wideband light sources, optical circulator, high-speed optical switch, at least two optical signal sensing passage module, optical signal receiving processing module and electronic signal processing module.A kind of fiber Bragg grating (FBG) demodulator described in the utility model can carry out multichannel multisensor synchronous demodulation, have stronger man-machine interaction, can effectively improve Wavelength demodulation speed, more efficiently obtain the measurement of wavelength of fiber-optic grating sensor；Demodulation speed can be effectively improved, there is the advantage that level of integrated system is high, at low cost, simple in structure, easy to operate and man-machine interaction is good；Multigroup demodulating data and enquiry of historical data can be stored, and module expansion can be carried out, while accesses branched Sensor monitoring and is uniformly controlled.
Description
Technical field
The utility model is related to technical field of optical fiber more particularly to a kind of fiber Bragg grating (FBG) demodulators.
Background technology
One of the core devices of fiber grating as fibre optical sensor, have that high sensitivity, electromagnetism interference be strong, volume
The advantages such as small and light weight, have been widely used for the necks such as civil engineering, petrochemical industry, aerospace, medical treatment and shipping industry
Domain.Fiber-optic grating sensor is in addition to having the advantages that traditional sensors, and the also characteristic with Wavelength-encoding is easy to networking and answers
With, it can be achieved that quasi-distributed measurement, can be applied to the engineering site of adverse circumstances.
Fiber-optic grating sensor can be packaged into diversified forms, for the inspection of the physical quantitys such as temperature, strain, pressure and displacement
It surveys.With the continuous progress of technology and the needs of safety monitoring, it is proposed that fiber-optic grating sensor and demodulated equipment higher
Requirement, this requires optical fiber grating regulating system being capable of high-speed, wide scope and high-resolution ground measurement sensor back wave
Long variable quantity.
Currently, it is increasing for the demand of optical fiber grating regulating system both at home and abroad.Although have currently on the market more
Kind fiber Bragg grating (FBG) demodulator is available, but there are still following deficiencies for existing fiber Bragg grating (FBG) demodulator：Volume is larger, more stupid
Weight, portability are poor, need alternating current continued power, expensive；Precision is relatively low, port number is few, can connect fiber-optic grating sensor
Quantity is few, can not realize multichannel multisensor synchronous demodulation；Menu operation is frequent, and man-machine interaction is poor.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of fiber Bragg grating (FBG) demodulator, overcomes existing optical fiber light
Grid (FBG) demodulator cannot carry out the defects of multichannel multisensor synchronous demodulation.
The technical solution adopted in the utility model is a kind of fiber Bragg grating (FBG) demodulator, including：Amplified spontaneous emission
ASE wideband light sources, optical circulator, high-speed optical switch, at least two optical signal sensing passage module, optical signal receiving area
Manage module and electronic signal processing module；
The ASE wideband light sources, for generating broadband optical signal；
The optical circulator, the broadband optical signal for the ASE wideband light sources to be generated are transmitted to the high-speed light and open
It closes；And the reflected light signal for receiving the high-speed optical switch is sent to optical signal receiving processing module；
The high-speed optical switch, for the control of the high-speed optical switch control signal generated in the electronic signal processing module
Under, the broadband optical signal is transmitted to one or more optical signal sensing passage modules；Receive the optical signal sensing
The reflected light signal that channel module obtains；
The optical signal sensing passage module, it is anti-for being carried out to the optical signal that wavelength is set in the broadband optical signal
It penetrates, obtains reflected light signal, and the reflected light signal is transmitted to the high-speed optical switch；
The optical signal receiving processing module, for being converted to analog telecommunications after being filtered to the reflected light signal
Number, and the analog electrical signal is transmitted to the electronic signal processing module；
The electronic signal processing module, for the analog electrical signal to be converted to digital electric signal, and to the number
Electric signal is demodulated, and obtains the centre wavelength of the reflected light signal；High-speed optical switch control signal is generated, and by the height
Fast optical switch control signal is transmitted to the high-speed optical switch.
Further, the optical signal sensing passage module, including one or more optical fiber bragg grating FBGs；
In the case where FBG is multiple, multiple FBG are sequentially connected；
The FBG for reflecting the optical signal that wavelength is set in the broadband optical signal, obtains reflected light letter
Number.
Further, the optical signal receiving processing module, including：First lens, volume phase grating, the second lens, electricity
Lotus coupling element CCD photoelectric detector, driving circuit and amplifier；
First lens, the volume phase grating, second lens, the CCD photoelectric detector and the amplification
Device is sequentially connected；
The driving circuit is connected with the CCD photoelectric detector；
First lens, for the reflected light signal to be converted to parallel optical signal；
The volume phase grating for being filtered to the parallel optical signal, obtains filtered optical signal；
Second lens, for the filtered optical signal to be focused on the CCD photoelectric detector；
The CCD photoelectric detector, for the filtered optical signal of second lens focus to be converted to simulation electricity
Signal；
The amplifier, for being transmitted to the Electric signal processing mould after analog electrical signal progress signal amplification
Block；
The driving circuit, for driving the CCD photoelectric detector.
Further, the electronic signal processing module, including：D/A converter module, field programmable gate array
FPGA module and embedded board computer；
The D/A converter module, the field programmable gate array FPGA module and the embedded board computer
It is sequentially connected；
The D/A converter module, for the analog electrical signal received to be converted to digital electric signal；
The FPGA module, for the digital electric signal to be transmitted to the embedded board computer；
The embedded board computer for being demodulated to the digital electric signal, obtains the reflected light signal
Centre wavelength；High-speed optical switch control signal is generated, and the high-speed optical switch control signal transmission to the high-speed light is opened
It closes.
Further, the electronic signal processing module, further includes：Memory module；
The memory module, for storing the middle cardiac wave for the reflected light signal that the embedded board computer obtains
It is long.
Further, the electronic signal processing module, further includes display module；
The display module, for showing the middle cardiac wave of the reflected light signal that the embedded board computer obtains
It is long.
Further, the fiber Bragg grating (FBG) demodulator, further includes：
Power module, for being respectively the ASE wideband light sources, the optical signal receiving processing module and the electric signal
Processing module provides power supply.
A kind of fiber Bragg grating (FBG) demodulator described in the utility model can carry out multichannel multisensor synchronous demodulation, have
Stronger man-machine interaction can effectively improve Wavelength demodulation speed, and the wavelength for more efficiently obtaining fiber-optic grating sensor is surveyed
Magnitude；It effectively improves demodulation speed, have that level of integrated system is high, at low cost, simple in structure, easy to operate and man-machine interaction is good
Advantage；Multigroup demodulating data and enquiry of historical data can be stored, and module expansion can be carried out, while accesses branched sensor prison
It surveys and is uniformly controlled.
Description of the drawings
Fig. 1 is that the fiber Bragg grating (FBG) demodulator of the utility model first embodiment forms structure diagram；
Fig. 2 is that the fiber Bragg grating (FBG) demodulator of the utility model second embodiment forms structure diagram；
Fig. 3 is the utility model the 3rd and the fiber Bragg grating (FBG) demodulator composition structure diagram of the 5th embodiment；
Fig. 4 is that the fiber Bragg grating (FBG) demodulator of the utility model fourth embodiment forms structure diagram.
Specific embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose taken, below in conjunction with
Attached drawing and preferred embodiment are described in detail the utility model as rear.
The utility model first embodiment, a kind of fiber Bragg grating (FBG) demodulator, as shown in Figure 1, including consisting of part：
ASE (Amplified Spontaneous Emission, amplified spontaneous emission) wideband light source 100, optical circulator
200th, high-speed optical switch 300, at least two optical signal sensing passage module 400,500 and of optical signal receiving processing module
Electronic signal processing module 600；
Wherein, ASE wideband light sources 100, optical circulator 200 and high-speed optical switch 300 are sequentially connected；
High-speed optical switch 300 is connected respectively at least two optical signal sensing passage module 400；
Optical circulator 200, optical signal receiving processing module 500 and electronic signal processing module 600 are sequentially connected；
ASE wideband light sources 100, for generating broadband optical signal；Wherein, the wave-length coverage of broadband optical signal for [1520nm,
1620nm]；
Optical circulator 200, the broadband optical signal for ASE wideband light sources 100 to be generated are transmitted to high-speed optical switch 300；
And the reflected light signal for receiving high-speed optical switch 300 is sent to optical signal receiving processing module 500；
High-speed optical switch 300, for the control of the high-speed optical switch control signal generated in electronic signal processing module 600
Under, broadband optical signal is transmitted to one or more optical signal sensing passage modules 400；Receive optical signal sensing passage module
400 obtained reflected light signals；
Optical signal sensing passage module 400 for reflecting the optical signal that wavelength is set in broadband optical signal, obtains
Reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Optical signal receiving processing module 500, for being converted to analog electrical signal after being filtered to reflected light signal, and will
Analog electrical signal is transmitted to electronic signal processing module 600；
Electronic signal processing module 600 for analog electrical signal to be converted to digital electric signal, and carries out digital electric signal
Demodulation, obtains the centre wavelength of reflected light signal；High-speed optical switch control signal is generated, and high-speed optical switch control signal is passed
Transport to high-speed optical switch 300.
The fiber Bragg grating (FBG) demodulator of the utility model second embodiment can carry out multichannel multisensor synchronous demodulation,
With stronger man-machine interaction, Wavelength demodulation speed can be effectively improved, more efficiently obtains the ripple of fiber-optic grating sensor
Long measured value.
The utility model second embodiment, the present embodiment are on the basis of first embodiment, with a kind of fiber grating solution
Exemplified by adjusting instrument, the application example an of the utility model, the fiber Bragg grating (FBG) demodulator, including consisting of part are introduced：
ASE wideband light sources 100, optical circulator 200, high-speed optical switch 300, optical signal sensing passage module 400, light letter
Number receiving processing module 500 and electronic signal processing module 600；
Wherein, the quantity of optical signal sensing passage module 400 is two；Optical signal sensing passage module 400 includes：The
One optical signal sensing passage module 401 and the second optical signal sensing passage module 402；
ASE wideband light sources 100, optical circulator 200 and high-speed optical switch 300 are sequentially connected；
High-speed optical switch 300 respectively with the first optical signal sensing passage module 401 and the second optical signal sensing passage module
402 are connected；
Optical circulator 200, optical signal receiving processing module 500 and electronic signal processing module 600 are sequentially connected；
ASE wideband light sources 100, for generating broadband optical signal；Wherein, the wave-length coverage of broadband optical signal is
[1520nm,1620nm]；
Optical circulator 200, the broadband optical signal for ASE wideband light sources 100 to be generated are transmitted to high-speed optical switch 300；
And the reflected light signal for receiving high-speed optical switch 300 is sent to optical signal receiving processing module 500；
High-speed optical switch 300, for the control of the high-speed optical switch control signal generated in electronic signal processing module 600
Under, broadband optical signal is transmitted to the first optical signal sensing passage module 401 and/or the second optical signal sensing passage module 402；
Receive the reflected light signal that the first optical signal sensing passage module 401 and/or the second optical signal sensing passage module 402 obtain；
First optical signal sensing passage module 401 carries out for the optical signal to the first setting wavelength in broadband optical signal
Reflection, obtains reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Second optical signal sensing passage module 402 carries out for the optical signal to the second setting wavelength in broadband optical signal
Reflection, obtains reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Optical signal receiving processing module 500, for being converted to analog electrical signal after being filtered to reflected light signal, and will
Analog electrical signal is transmitted to electronic signal processing module 600；
Electronic signal processing module 600 for analog electrical signal to be converted to digital electric signal, and carries out digital electric signal
Demodulation, obtains the centre wavelength of reflected light signal；High-speed optical switch control signal is generated, and high-speed optical switch control signal is passed
Transport to high-speed optical switch 300.
The fiber Bragg grating (FBG) demodulator of the utility model second embodiment can carry out two passage multisensors and synchronously solve
It adjusts, there is stronger man-machine interaction, Wavelength demodulation speed can be effectively improved, more efficiently obtain fiber-optic grating sensor
Measurement of wavelength.
The utility model 3rd embodiment, a kind of fiber Bragg grating (FBG) demodulator, as shown in figure 3, including consisting of part：
ASE wideband light sources 100, optical circulator 200, high-speed optical switch 300, at least two optical signal sensing passage
Module 400, optical signal receiving processing module 500, electronic signal processing module 600 and power module 700；
Wherein, ASE wideband light sources 100, optical circulator 200 and high-speed optical switch 300 are sequentially connected；
High-speed optical switch 300 is connected respectively at least two optical signal sensing passage module 400；
Optical circulator 200, optical signal receiving processing module 500 and electronic signal processing module 600 are sequentially connected；
Power module 700 respectively with ASE wideband light sources 100, optical signal receiving processing module 500 and electronic signal processing module
600 are connected；
ASE wideband light sources 100, for generating broadband optical signal；Wherein, the wave-length coverage of broadband optical signal is
[1520nm,1620nm]；
Optical circulator 200, the broadband optical signal for ASE wideband light sources 100 to be generated are transmitted to high-speed optical switch 300；
And the reflected light signal for receiving high-speed optical switch 300 is sent to optical signal receiving processing module 500；
High-speed optical switch 300, for the control of the high-speed optical switch control signal generated in electronic signal processing module 600
Under, broadband optical signal is transmitted to one or more optical signal sensing passage modules 400；Receive optical signal sensing passage module
400 obtained reflected light signals；
Optical signal sensing passage module 400 for reflecting the optical signal that wavelength is set in broadband optical signal, obtains
Reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Wherein, optical signal sensing passage module 400, including one or more FBG (Fiber Bragg Grating, light
Fine Bragg grating)；
In the case where FBG is multiple, multiple FBG are sequentially connected；
FBG for reflecting the optical signal that wavelength is set in broadband optical signal, obtains reflected light signal；
Optical signal receiving processing module 500, for being converted to analog electrical signal after being filtered to reflected light signal, and will
Analog electrical signal is transmitted to electronic signal processing module 600；
Wherein, optical signal receiving processing module 500, including：First lens 501, volume phase grating 502, the second lens
503rd, CCD (Charge-Coupled Device, charge coupled cell) photodetector 504, driving circuit 505 and amplifier
506；
First lens 501, volume phase grating 502, the second lens 503, CCD photoelectric detector 504 and amplifier 506 are successively
It is connected；
Driving circuit 505 is connected with CCD photoelectric detector 504；
First lens 501, for reflected light signal to be converted to parallel optical signal；
Volume phase grating 502 for being filtered to parallel optical signal, obtains filtered optical signal；
Second lens 503, for filtered optical signal to be focused on CCD photoelectric detector 504；
CCD photoelectric detector 504, the filtered optical signal for the second lens 503 to be focused on are converted to analog electrical signal；
Amplifier 506, for being transmitted to electronic signal processing module 600 after analog electrical signal progress signal amplification；
Driving circuit 505, for driving CCD photoelectric detector 504；
Electronic signal processing module 600 for analog electrical signal to be converted to digital electric signal, and carries out digital electric signal
Demodulation, obtains the centre wavelength of reflected light signal；High-speed optical switch control signal is generated, and high-speed optical switch control signal is passed
Transport to high-speed optical switch 300；
Wherein, electronic signal processing module 600, including：D/A converter module 601, FPGA (Field- Programmable
Gate Array, field programmable logic gate array) module 602, embedded board computer 603, memory module 604 and display module
605；
D/A converter module 601, FPGA module 602 and embedded board computer 603 are sequentially connected；
Embedded board computer 603 is connected respectively with memory module 604 and display module 605；
D/A converter module 601, for the analog electrical signal received to be converted to digital electric signal；
FPGA module 602, for digital electric signal to be transmitted to embedded board computer 603；
Embedded board computer 603 for being demodulated to digital electric signal, obtains the centre wavelength of reflected light signal；
High-speed optical switch control signal is generated, and by high-speed optical switch control signal transmission to high-speed optical switch 300；
Memory module 604, for storing the centre wavelength for the reflected light signal that embedded board computer 603 obtains；
Display module 605, for showing the centre wavelength of reflected light signal that embedded board computer 603 obtains.
Power module 700, for being respectively at ASE wideband light sources 100, optical signal receiving processing module 500 and electric signal
It manages module 600 and power supply is provided；
Wherein, power module 700, have for be respectively ASE wideband light sources 100, amplifier 506, driving circuit 505,
D/A converter module 601, FPGA module 602, embedded board computer 603, memory module 604 and display module 605 provide electricity
Source.
The fiber Bragg grating (FBG) demodulator of the utility model fourth embodiment can carry out multichannel multisensor synchronous demodulation,
With stronger man-machine interaction, Wavelength demodulation speed can be effectively improved, more efficiently obtains the ripple of fiber-optic grating sensor
Long measured value；It effectively improves demodulation speed, have that level of integrated system is high, at low cost, simple in structure, easy to operate and human-computer interaction
The good advantage of property；Multigroup demodulating data and enquiry of historical data can be stored, and module expansion can be carried out, while accesses branched sensing
Device is monitored and is uniformly controlled.
The utility model fourth embodiment, the present embodiment are on the basis of 3rd embodiment, with a kind of fiber grating solution
Exemplified by adjusting instrument, as shown in figure 4, the application example an of the utility model is introduced, the fiber Bragg grating (FBG) demodulator, including consisting of
Part：
ASE wideband light sources 100, optical circulator 200, high-speed optical switch 300, optical signal sensing passage module 400, light letter
Number receiving processing module 500, electronic signal processing module 600 and power module 700；
Wherein, the quantity of optical signal sensing passage module 400 is three；Optical signal sensing passage module 400, including：The
One optical signal sensing passage module 401, the second optical signal sensing passage module 402 and the 3rd optical signal sensing passage module 403；
ASE wideband light sources 100, optical circulator 200 and high-speed optical switch 300 are sequentially connected；
High-speed optical switch 300 is connected respectively with three optical signal sensing passage modules 400；
Optical circulator 200, optical signal receiving processing module 500 and electronic signal processing module 600 are sequentially connected；
Power module 700 respectively with ASE wideband light sources 100, optical signal receiving processing module 500 and electronic signal processing module
600 are connected；
ASE wideband light sources 100, for generating broadband optical signal；Wherein, the wave-length coverage of broadband optical signal for [1520nm,
1620nm]；
Optical circulator 200, the broadband optical signal for ASE wideband light sources 100 to be generated are transmitted to high-speed optical switch 300；
And the reflected light signal for receiving high-speed optical switch 300 is sent to optical signal receiving processing module 500；
High-speed optical switch 300, for the control of the high-speed optical switch control signal generated in electronic signal processing module 600
Under, broadband optical signal is transmitted to the first optical signal sensing passage module 401, the second optical signal sensing passage module 402 and
One or more of three optical signal sensing passage modules 403；Receive the first optical signal sensing passage module 401, the second light letter
The reflected light signal that number 402 and the 3rd optical signal sensing passage module 403 of sensing passage module obtains；
First optical signal sensing passage module 401 carries out for the optical signal to the first setting wavelength in broadband optical signal
Reflection, obtains reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Second optical signal sensing passage module 402 carries out for the optical signal to the second setting wavelength in broadband optical signal
Reflection, obtains reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
3rd optical signal sensing passage module 403 carries out for the optical signal to the 3rd setting wavelength in broadband optical signal
Reflection, obtains reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Wherein, the first optical signal sensing passage module 401 includes：First FBG411, the 2nd FBG421 and the 3rd FBG431；
First FBG411, the 2nd FBG421 and the 3rd FBG431 are sequentially connected；
First FBG411 reflects for the optical signal to the first setting wavelength in broadband optical signal, obtains first and set
The reflected light signal of standing wave length, and the reflected light signal of the first setting wavelength is transmitted to high-speed optical switch 300；
2nd FBG421 reflects for the optical signal to the first setting wavelength in broadband optical signal, obtains first and set
The reflected light signal of standing wave length, and the reflected light signal of the first setting wavelength is transmitted to high-speed optical switch 300；
3rd FBG431 reflects for the optical signal to the first setting wavelength in broadband optical signal, obtains first and set
The reflected light signal of standing wave length, and the reflected light signal of the first setting wavelength is transmitted to high-speed optical switch 300；
Second optical signal sensing passage module 402 includes：4th FBG412, the 5th FBG422 and the 6th FBG432；
4th FBG412, the 5th FBG422 and the 6th FBG432 are sequentially connected；
4th FBG412 reflects for the optical signal to the 4th setting wavelength in broadband optical signal, obtains the 4th and set
The reflected light signal of standing wave length；
5th FBG422 reflects for the optical signal to the 5th setting wavelength in broadband optical signal, obtains the 5th and set
The reflected light signal of standing wave length；
6th FBG432 reflects for the optical signal to the 6th setting wavelength in broadband optical signal, obtains the 6th and set
The reflected light signal of standing wave length；
3rd optical signal sensing passage module 403 includes：7th FBG413, the 8th FBG423 and the 9th FBG433；
7th FBG413, the 8th FBG423 and the 9th FBG433 are sequentially connected；
7th FBG413 reflects for the optical signal to the 7th setting wavelength in broadband optical signal, obtains the 7th and set
The reflected light signal of standing wave length；
8th FBG423 reflects for the optical signal to the 8th setting wavelength in broadband optical signal, obtains the 8th and set
The reflected light signal of standing wave length；
9th FBG433 reflects for the optical signal to the 9th setting wavelength in broadband optical signal, obtains the 9th and set
The reflected light signal of standing wave length；
Optical signal receiving processing module 500, for being converted to analog electrical signal after being filtered to reflected light signal, and will
Analog electrical signal is transmitted to electronic signal processing module 600；
Wherein, optical signal receiving processing module 500, including：First lens 501, volume phase grating 502, the second lens
503rd, CCD photoelectric detector 504, driving circuit 505 and amplifier 506；
First lens 501, volume phase grating 502, the second lens 503, CCD photoelectric detector 504 and amplifier 506 are successively
It is connected；
Driving circuit 505 is connected with CCD photoelectric detector 504；
First lens 501, for reflected light signal to be converted to parallel optical signal；
Volume phase grating 502 for being filtered to parallel optical signal, obtains filtered optical signal；
Second lens 503, for filtered optical signal to be focused on CCD photoelectric detector 504；
CCD photoelectric detector 504, the filtered optical signal for the second lens 503 to be focused on are converted to analog electrical signal；
Amplifier 506, for being transmitted to electronic signal processing module 600 after analog electrical signal progress signal amplification；
Driving circuit 505, for driving CCD photoelectric detector 504；
Electronic signal processing module 600 for analog electrical signal to be converted to digital electric signal, and carries out digital electric signal
Demodulation, obtains the centre wavelength of reflected light signal；High-speed optical switch control signal is generated, and high-speed optical switch control signal is passed
Transport to high-speed optical switch 300；
Wherein, electronic signal processing module 600, including：D/A converter module 601, FPGA module 602, embedded board electricity
Brain 603, memory module 604 and display module 605；
D/A converter module 601, FPGA module 602 and embedded board computer 603 are sequentially connected；
Embedded board computer 603 is connected respectively with memory module 604 and display module 605；
D/A converter module 601, for the analog electrical signal received to be converted to digital electric signal；
FPGA module 602, for digital electric signal to be transmitted to embedded board computer 603；
Embedded board computer 603 for being demodulated to digital electric signal, obtains the centre wavelength of reflected light signal；
High-speed optical switch control signal is generated, and by high-speed optical switch control signal transmission to high-speed optical switch 300；
Wherein, embedded board computer 603, the virtual instrument technique software LabVIEW based on National Instruments
The wavelength of reflected light signal is calculated by fiber grating sensor wavelength demodulating algorithm, peak-seeking fitting and demodulating algorithm；And lead to
Passage changeover program generation high-speed optical switch control signal is crossed, high-speed optical switch 300 is controlled by high-speed optical switch control signal
Switching state, broadband optical signal is consolidated to an optical signal sensing passage module 400 for being transmitted to setting or believes broadband light
Number be transmitted to admittedly setting an optical signal sensing passage module 400 or setting time interval by broadband optical signal
Switch to the optical signal sensing passage module 400 of setting；
Memory module 604, for storing the centre wavelength for the reflected light signal that embedded board computer 603 obtains；
Wherein, store to the centre wavelength of the reflected light signal of memory module 604 and be named by the time, with facilitate into
Row management and lookup；The centre wavelength storage format of reflected light signal is Excel forms；
Display module 605, for showing the centre wavelength of reflected light signal that embedded board computer 603 obtains.
Power module 700, specifically for being respectively ASE wideband light sources 100, amplifier 506, driving circuit 505, digital-to-analogue
Modular converter 601, FPGA module 602, embedded board computer 603, memory module 604 and display module 605 provide power supply.
Wherein, power module 700, specifically for providing 5V power supplys for ASE wideband light sources 100, be driving circuit 505,
FPGA module 602 and embedded board computer 603 provide 12V power supplys.
The fiber Bragg grating (FBG) demodulator of the utility model fourth embodiment can carry out triple channel multisensor synchronous demodulation,
With stronger man-machine interaction, Wavelength demodulation speed can be effectively improved, more efficiently obtains the ripple of fiber-optic grating sensor
Long measured value；It effectively improves demodulation speed, have that level of integrated system is high, at low cost, simple in structure, easy to operate and human-computer interaction
The good advantage of property；Multigroup demodulating data and enquiry of historical data can be stored, and module expansion can be carried out, while accesses branched sensing
Device is monitored and is uniformly controlled.
The 5th embodiment of the utility model, the present embodiment are on the basis of above-described embodiment, with a kind of fiber grating solution
Exemplified by adjusting instrument, as shown in figure 3, introducing the application example an of the utility model.
Fiber Bragg grating (FBG) demodulator, including：300, four ASE wideband light sources 100, optical circulator 200, high-speed optical switch light letters
Number sensing passage module 400, optical signal receiving processing module 500, electronic signal processing module 600 and power module 700；
Wherein, ASE wideband light sources 100, optical circulator 200 and high-speed optical switch 300 are sequentially connected；
High-speed optical switch 300 is connected respectively with four optical signal sensing passage modules 400；
Optical circulator 200, optical signal receiving processing module 500 are connected with electronic signal processing module 600；
Power module 700 respectively with ASE wideband light sources 100, optical signal receiving processing module 500 and electronic signal processing module
600 are connected；
ASE wideband light sources 100, for generating broadband optical signal；Wherein, the wave-length coverage of broadband optical signal for [1520nm,
1620nm]；
Optical circulator 200, the broadband optical signal for ASE wideband light sources 100 to be generated are transmitted to high-speed optical switch 300；
And the reflected light signal for receiving high-speed optical switch 300 is sent to optical signal receiving processing module 500；
High-speed optical switch 300, for the control of the high-speed optical switch control signal generated in electronic signal processing module 600
Under, broadband optical signal is transmitted to one or more optical signal sensing passage modules 400；Receive optical signal sensing passage module
400 obtained reflected light signals；
Optical signal sensing passage module 400 for reflecting the optical signal that wavelength is set in broadband optical signal, obtains
Reflected light signal, and reflected light signal is transmitted to high-speed optical switch 300；
Wherein, each optical signal sensing passage module 400 includes 30 FBG；
30 FBG in each optical signal sensing passage module 400 are sequentially connected；
Each FBG for reflecting the optical signal that wavelength is set in broadband optical signal, obtains reflected light signal；
Optical signal receiving processing module 500, for being converted to analog electrical signal after being filtered to reflected light signal, and will
Analog electrical signal is transmitted to electronic signal processing module 600；
Wherein, optical signal receiving processing module 500, including：First lens 501, volume phase grating 502, the second lens
503rd, CCD photoelectric detector 504, driving circuit 505 and amplifier 506；
First lens 501, volume phase grating 502, the second lens 503, CCD photoelectric detector 504 and amplifier 506 are successively
It is connected；
Driving circuit 505 is connected with CCD photoelectric detector 504；
First lens 501, for reflected light signal to be converted to parallel optical signal；
Volume phase grating 502 for being filtered to parallel optical signal, obtains filtered optical signal；
Second lens 503, for filtered optical signal to be focused on CCD photoelectric detector 504；
CCD photoelectric detector 504, the filtered optical signal for the second lens 503 to be focused on are converted to analog electrical signal；
Amplifier 506, for being transmitted to electronic signal processing module 600 after analog electrical signal progress signal amplification；
Driving circuit 505, for driving CCD photoelectric detector 504；
Electronic signal processing module 600 for analog electrical signal to be converted to digital electric signal, and carries out digital electric signal
Demodulation, obtains the centre wavelength of reflected light signal；High-speed optical switch control signal is generated, and high-speed optical switch control signal is passed
Transport to high-speed optical switch 300；
Wherein, electronic signal processing module 600, including：D/A converter module 601, FPGA module 602, embedded board electricity
Brain 603, memory module 604 and display module 605；
D/A converter module 601, FPGA module 602 and embedded board computer 603 are sequentially connected；
Embedded board computer 603 is connected respectively with memory module 604 and display module 605；
D/A converter module 601, for the analog electrical signal received to be converted to digital electric signal；
FPGA module 602, for digital electric signal to be transmitted to embedded board computer 603；
Embedded board computer 603 for being demodulated to digital electric signal, obtains the centre wavelength of reflected light signal；
High-speed optical switch control signal is generated, and by high-speed optical switch control signal transmission to high-speed optical switch 300；
Wherein, embedded board computer 603, the virtual instrument technique software LabVIEW based on National Instruments
The wavelength of reflected light signal is calculated by fiber grating sensor wavelength demodulating algorithm, peak-seeking fitting and demodulating algorithm；And lead to
Passage changeover program generation high-speed optical switch control signal is crossed, high-speed optical switch 300 is controlled by high-speed optical switch control signal
Switching state, broadband optical signal is consolidated to an optical signal sensing passage module 400 for being transmitted to setting or believes broadband light
Number be transmitted to admittedly setting an optical signal sensing passage module 400 or setting time interval by broadband optical signal
Switch to the optical signal sensing passage module 400 of setting；
Memory module 604, for storing the centre wavelength for the reflected light signal that embedded board computer 603 obtains；
Wherein, store to the centre wavelength of the reflected light signal of memory module 604 and be named by the time, with facilitate into
Row management and lookup；The centre wavelength storage format of reflected light signal is Excel forms；
Display module 605, for showing the centre wavelength of reflected light signal that embedded board computer 603 obtains.
Power module 700, for being respectively at ASE wideband light sources 100, optical signal receiving processing module 500 and electric signal
It manages module 600 and power supply is provided；
Wherein, power module 700 have and are used to provide 5V power supplys for ASE wideband light sources 100, be driving circuit 505,
FPGA module 602 and embedded board computer 603 provide 12V power supplys.
The fiber Bragg grating (FBG) demodulator of the 5th embodiment of the utility model can carry out multichannel multisensor synchronous demodulation,
With stronger man-machine interaction, Wavelength demodulation speed can be effectively improved, more efficiently obtains the ripple of fiber-optic grating sensor
Long measured value；It effectively improves demodulation speed, have that level of integrated system is high, at low cost, simple in structure, easy to operate and human-computer interaction
The good advantage of property；Multigroup demodulating data and enquiry of historical data can be stored, and module expansion can be carried out, while accesses branched sensing
Device is monitored and is uniformly controlled.
Should be able to be to reach the technology hand that predetermined purpose is taken to the utility model by the explanation of specific embodiment
Section and effect are able to more go deep into and specific understanding, however appended diagram is only to provide reference and purposes of discussion, is not used for
The utility model is any limitation as.
Claims (7)
1. a kind of fiber Bragg grating (FBG) demodulator, which is characterized in that including：Amplified spontaneous emission ASE wideband light sources, optical circulator, height
Fast photoswitch, at least two optical signal sensing passage module, optical signal receiving processing module and electronic signal processing module；
The ASE wideband light sources, for generating broadband optical signal；
The optical circulator, the broadband optical signal for the ASE wideband light sources to be generated are transmitted to the high-speed optical switch；And
The reflected light signal that the high-speed optical switch receives is sent to optical signal receiving processing module；
The high-speed optical switch, under the control for the high-speed optical switch control signal generated in the electronic signal processing module,
The broadband optical signal is transmitted to one or more optical signal sensing passage modules；Receive the optical signal sensing passage
The reflected light signal that module obtains；
The optical signal sensing passage module for reflecting the optical signal that wavelength is set in the broadband optical signal, obtains
The high-speed optical switch is transmitted to reflected light signal, and by the reflected light signal；
The optical signal receiving processing module, for being converted to analog electrical signal after being filtered to the reflected light signal, and
The analog electrical signal is transmitted to the electronic signal processing module；
The electronic signal processing module, for the analog electrical signal to be converted to digital electric signal, and to the digital telecommunication
It number is demodulated, obtains the centre wavelength of the reflected light signal；High-speed optical switch control signal is generated, and by the high-speed light
Switch controlling signal is transmitted to the high-speed optical switch.
2. fiber Bragg grating (FBG) demodulator according to claim 1, which is characterized in that the optical signal sensing passage module, bag
It includes, one or more optical fiber bragg grating FBGs；
In the case where FBG is multiple, multiple FBG are sequentially connected；
The FBG for reflecting the optical signal that wavelength is set in the broadband optical signal, obtains reflected light signal.
3. fiber Bragg grating (FBG) demodulator according to claim 1, which is characterized in that the optical signal receiving processing module, bag
It includes：First lens, volume phase grating, the second lens, charge coupled cell CCD photoelectric detector, driving circuit and amplifier；
First lens, the volume phase grating, second lens, the CCD photoelectric detector and the amplifier according to
It is secondary to be connected；
The driving circuit is connected with the CCD photoelectric detector；
First lens, for the reflected light signal to be converted to parallel optical signal；
The volume phase grating for being filtered to the parallel optical signal, obtains filtered optical signal；
Second lens, for the filtered optical signal to be focused on the CCD photoelectric detector；
The CCD photoelectric detector, for the filtered optical signal of second lens focus to be converted to analog electrical signal；
The amplifier, for being transmitted to the electronic signal processing module after analog electrical signal progress signal amplification；
The driving circuit, for driving the CCD photoelectric detector.
4. fiber Bragg grating (FBG) demodulator according to claim 1, which is characterized in that the electronic signal processing module, including：Number
Mould modular converter, field programmable gate array FPGA module and embedded board computer；
The D/A converter module, the field programmable gate array FPGA module and the embedded board computer are successively
It is connected；
The D/A converter module, for the analog electrical signal received to be converted to digital electric signal；
The FPGA module, for the digital electric signal to be transmitted to the embedded board computer；
The embedded board computer for being demodulated to the digital electric signal, obtains the center of the reflected light signal
Wavelength；High-speed optical switch control signal is generated, and by the high-speed optical switch control signal transmission to the high-speed optical switch.
5. fiber Bragg grating (FBG) demodulator according to claim 4, which is characterized in that the electronic signal processing module further includes：
Memory module；
The memory module, for storing the centre wavelength for the reflected light signal that the embedded board computer obtains.
6. fiber Bragg grating (FBG) demodulator according to claim 4, which is characterized in that the electronic signal processing module further includes
Display module；
The display module, for showing the centre wavelength of the reflected light signal that the embedded board computer obtains.
7. fiber Bragg grating (FBG) demodulator according to claim 1, which is characterized in that the fiber Bragg grating (FBG) demodulator further includes：
Power module, for being respectively the ASE wideband light sources, the optical signal receiving processing module and the Electric signal processing
Module provides power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720823677.4U CN207456479U (en) | 2017-07-07 | 2017-07-07 | A kind of fiber Bragg grating (FBG) demodulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720823677.4U CN207456479U (en) | 2017-07-07 | 2017-07-07 | A kind of fiber Bragg grating (FBG) demodulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207456479U true CN207456479U (en) | 2018-06-05 |
Family
ID=62246645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720823677.4U Active CN207456479U (en) | 2017-07-07 | 2017-07-07 | A kind of fiber Bragg grating (FBG) demodulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207456479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561954A (en) * | 2020-07-01 | 2020-08-21 | 金陵科技学院 | Sensing spectrum shape demodulation system and method for distributed fiber bragg grating |
| CN113465656A (en) * | 2021-04-30 | 2021-10-01 | 潍坊嘉腾液压技术有限公司 | Tester for detecting fluid composite parameters and data processing method |
-
2017
- 2017-07-07 CN CN201720823677.4U patent/CN207456479U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561954A (en) * | 2020-07-01 | 2020-08-21 | 金陵科技学院 | Sensing spectrum shape demodulation system and method for distributed fiber bragg grating |
| CN113465656A (en) * | 2021-04-30 | 2021-10-01 | 潍坊嘉腾液压技术有限公司 | Tester for detecting fluid composite parameters and data processing method |
| CN113465656B (en) * | 2021-04-30 | 2023-08-15 | 潍坊嘉腾液压技术有限公司 | Tester for detecting fluid composite parameters and data processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103837852B (en) | All-fiber electronic current transformer frequency characteristic test device and method of testing | |
| Kabalci et al. | Design and implementation of a renewable energy monitoring system | |
| CN103413585B (en) | The digitizing out-of-pile nuclear measurement system of Based PC/104 bus | |
| CN207380224U (en) | A kind of multichannel power frequency magnetic field intensity synchronized measurement system | |
| CN102062616A (en) | Teletransmission-based embedded fiber bragg grating monitoring system | |
| CN206695827U (en) | Electric power line pole tower condition monitoring system | |
| CN104297634B (en) | Ultrahigh-voltage online monitoring system | |
| CN102749606B (en) | Measurement method and device for optical voltage transformer dynamic property research | |
| CN207456479U (en) | A kind of fiber Bragg grating (FBG) demodulator | |
| CN104316201A (en) | Infrared array temperature measurement monitoring system of high-voltage isolating switch contact | |
| CN108917976B (en) | Temperature measuring device based on tunable light source and fiber grating | |
| CN103163351B (en) | A kind of optical voltage sensor of three-phase common light source | |
| CN104316091A (en) | Modular distributed optical fiber sensing device | |
| CN106768061A (en) | A kind of shaft tower monitoring system | |
| CN203203611U (en) | Quasi-distributed high voltage transmission line optical fiber monitoring network | |
| CN107462777A (en) | A kind of system and method for being used to carry out multichannel power frequency electric field measurement under high humidity conditions | |
| CN211553128U (en) | Fiber bragg grating temperature measurement system for monitoring temperature of energy storage lithium battery | |
| CN202382873U (en) | Intelligent temperature transmitter | |
| CN102435822B (en) | Piezoelectric ceramic-based electronic voltage mutual induction device | |
| CN103259609A (en) | Point type high-voltage transmission line optical fiber detection network | |
| CN203629606U (en) | Fiber raster humiture sensor and humiture detection system | |
| CN203133201U (en) | Integrated measurement device for energy-storage grid-connected system | |
| CN204731311U (en) | Based on the temperature self-compensation type optical voltage measuring device of ring electric field coupled structure | |
| CN104965122B (en) | Temperature self-compensation type optical voltage measuring device based on ring electric field coupled structure | |
| CN203772952U (en) | Dual channel data redundancy high voltage electric energy direct metering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |