CN107246886A - Ore deposit pressure signal real-time visual demodulating system and demodulation method based on Fibre Optical Sensor - Google Patents
Ore deposit pressure signal real-time visual demodulating system and demodulation method based on Fibre Optical Sensor Download PDFInfo
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- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
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Abstract
The present invention relates to a kind of ore deposit pressure signal real-time visual demodulating system based on Fibre Optical Sensor and demodulation method, described demodulating system is main to press signal acquisition subsystem, optical signal transmission subsystem, photoelectric signal transformation subsystem, data signal visualization processing subsystem to constitute by ore deposit.By arranging that fibre optical sensor gathers ore deposit and presses signal in underground coal mine, ore deposit pressure signal is transferred to mining optical fiber grating (FBG) demodulator with form of light waves, and wavelength data is demodulated into, wavelength data is demodulated into data signal visualization processing subsystem into ore deposit pressure physical quantity and output visualization ore deposit pressure chart and ore pressure monitor are reported automatically.Its advantage is：Demodulating system is comprehensively polynary, and expansion is strong；System equipment essential safety, the subsurface environment for the complexity that is particularly suitable for use in；Demodulating algorithm is strongly professional, more accurate to ore deposit pressure signal demodulation；Demodulation result is clear and intuitive, and visualization is high；System response is timely and effective, can show that Underground presses situation in real time, it is advantageously ensured that safety of coal mines is efficiently produced.
Description
Technical field
The present invention relates to a kind of ore deposit pressure signal demodulating system and demodulation method, specifically a kind of ore deposit pressure based on Fibre Optical Sensor
Signal real-time visual demodulating system and demodulation method.
Background technology
Since past one, 20 years, the development of China's economic society is opened with sharp increase, coal is consumed the demand of coal
Adopt intensity and mining depth to be also continuously increased therewith, accident is increasingly severe caused by strata behaviors, such as impulsion pressure, lane
The mine safety accidents such as road deformation frequently occur, and the life security to coal miner constitutes a serious threat, also strong influence
Safety of coal mines high-efficiency mining.These accidents are all due to inherently to press dynamic sensing not in time to Underground, and signal is pressed to ore deposit
Processing is inaccurate, presses situation to grasp the hidden danger do not known and buried ore deposit.Therefore set up it is a set of can to Underground pressure signal carry out
Real-time perception and transmission, specialty are resolved and analyzed, and the ore deposit pressure signal demodulating system of display and output directly perceived is most important.
The monitoring of signal and process field is pressed mainly to include mechanical ore deposit pressure instrument, resistance strain gage in ore deposit both at home and abroad at present
Formula sensor, and monolithic processor controlled vibrating wire pressure sensor is used, but this kind of existing ore deposit pressure signal monitoring system is general
All over having the disadvantages that：1st, using artificial reading collection ore deposit pressure signal, monitoring result is delayed, it is impossible to realize real time on-line monitoring；
2nd, signal causes distorted signals degree high, data reliability easily by electromagnetism and external environmental interference in perception and transmitting procedure
Difference；3rd, the data obtained need manually to be analyzed and post-processed, and intelligence degree is low, and workload is big；4th, data isolate degree
Height, inconvenience carries out data transverse direction and longitudinal direction comparative analysis, and information organization form is not directly perceived.
The content of the invention
Technical problem：In order to overcome deficiency of the prior art, signal can be pressed to ore deposit it is an object of the invention to provide one kind
The pressure signal real-time visual demodulation of the ore deposit based on Fibre Optical Sensor that transmitting, in real time accurate demodulation, display and visualization are presented
System and demodulation method.
Technical scheme：The purpose of the present invention is achieved through the following technical solutions：Signal is pressed including the ore deposit based on Fibre Optical Sensor
Real-time visual demodulating system and demodulation method,
Described ore deposit pressure signal real-time visual demodulating system：Including ore deposit pressure signal acquisition subsystem, optical signal transmission
System, photoelectric signal transformation subsystem and data signal visualization processing subsystem；Ore deposit pressure signal acquisition subsystem, optical signal are passed
Defeated subsystem, photoelectric signal transformation subsystem and data signal visualization processing subsystem are linked in sequence；
Photoelectric signal transformation subsystem and data signal visualization processing subsystem are located on well；
Ore deposit pressure signal acquisition subsystem is connected with optical signal transmission subsystem by optical fiber, and positioned at underground.
Described ore deposit pressure signal acquisition subsystem includes one group or several groups in fiber grating rock pressure sensor：Described light
Fine grating rock pressure sensor is fiber grating borehole stressmeter, optical fiber grating anchor ergometer, fiber grating force-measuring anchor stock or light
Fine light barrier holder pressure gauge；Described fiber grating rock pressure sensor is arranged on roadway surrounding rock, anchor pole, anchor cable or work as needed
Make on the hydraulic support of face, perceive ore deposit pressure signal.
Described optical signal transmission subsystem includes optical fiber pigtail, optical Fiber Closure and mining transmission cable；Wherein optical fiber
One end of tail optical fiber is connected with fiber grating rock pressure sensor, and the other end is linked into mining transmission cable, shape by optical Fiber Closure
Into optical signal transmission path.
Described photoelectric signal transformation subsystem has the static (FBG) demodulator of mining optical fiber grating, mining optical fiber grating static state demodulation
The input of instrument is connected with the mining transmission cable in optical signal transmission subsystem, the output of mining optical fiber grating static state (FBG) demodulator
End is connected with the data server input of data signal visualization processing subsystem；Mining optical fiber grating static state (FBG) demodulator is received
The carrying ore deposit transmitted by optical fiber cable for mine presses the optical signal of information, and is by wavelength after wavelength data by netting twine by optical signal demodulation
Data are transferred to data signal visualization processing subsystem.
Described data signal visualization processing subsystem includes display terminal when data server and ore deposit compacting；Data take
Business device carries out reception storage, demodulation conversion to wavelength signals by embedded data processor, analyzes and predict, and by mining
Display terminal carries out data communication when LAN is compacted with ore deposit, and display terminal passes through embedded data visualization program when ore deposit is compacted
Realize the real-time display of ore deposit pressure chart and monitoring form.
The data server of described data signal visualization processing subsystem includes Data Storage, data solution
Adjust modular converter and data analysis prediction module, display terminal bag when described data signal visualization processing subsystem ore deposit is compacted
Include data real-time visual processing module and data visualization output module；Data Storage, data demodulation modulus of conversion
Block, data analysis prediction module, data real-time visual processing module and data visualization output module are linked in sequence；It is described
's：
(a) Data Storage, reception, storage with data, backup functionality；
(b) data demodulation modular converter, ore deposit pressure physical quantity is converted to wavelength data is demodulated by special algorithm
Function；
(c) data analysis prediction module, safety analysis, Error processing, early-warning and predicting with data are simultaneously advised
Function；
(d) data real-time visual processing module, chart, generation ore pressure monitor form are pressed simultaneously with ore deposit is drawn according to data
The function of real-time update；
(e) data visualization output module, buckles line diagram and ore pressure monitor form screen display function with ore deposit.
Described Data Storage sends data according to the frequency of setting to the static (FBG) demodulator of mining optical fiber grating
Ask and obtain data, it is timely and effective to ensure that ore deposit pressure signal visualization interface refreshes in real time.
Described presses the demodulation method of signal visualization demodulating system to be demodulated as follows based on ore deposit：(1), system
Install；(2), ore deposit pressure signal acquisition and transmission；(3), the demodulation of photosignal with conversion and (4), the visualization of physical signalling at
Reason；
(1), system is installed：
A, ore deposit press the installation of signal acquisition subsystem：According to ore pressure monitor demand, different fiber grating ore deposits is pressed and sensed
Device is arranged on corresponding monitoring measuring point；
B, optical signal transmission subsystem installation：One end of optical fiber pigtail by optical Fiber Closure with being linked into mining transmission
Optical cable, forms optical signal transmission path；
C, photoelectric signal transformation subsystem installation：The static (FBG) demodulator of mining optical fiber grating is placed in coalmine dispatching room,
(FBG) demodulator IP address is set, (FBG) demodulator initialized and calibration, it is ensured that its normal work；
D, data signal visualization processing subsystem are installed：Data server is placed in coalmine dispatching room, will be based on C# languages
The data processor of the IDEs of Visual Studio 2010 of making peace exploitation is installed to data server and debugged, if
Server ip address is put；Display terminal is placed in colliery leader and production technique personnel office when ore deposit is compacted, in terminal
Installation data visualization procedure is simultaneously debugged to normal work；Display terminal passes through mining LAN when data server and ore deposit compacting
Realize data communication and shared；
E, each subsystem UNICOM：The fiber grating rock pressure sensor of ore deposit pressure signal acquisition subsystem and optical signal transmission
The tail optical fiber of system is connected, the mining transmission cable of optical signal transmission subsystem and the mine optical fiber of photoelectric signal transformation subsystem
Grating static state (FBG) demodulator is connected, the data, services of mining optical fiber grating static state (FBG) demodulator and data signal visualization processing subsystem
Device passes through mining Local network communication；
(2), ore deposit pressure signal acquisition and transmission：
The fibre optical sensor arranged by underground gathers ore deposit and presses signal, and ore deposit pressure signal is passed with form of light waves by optical fiber cable for mine
It is defeated by the static (FBG) demodulator of mining optical fiber grating；
(3), the demodulation and conversion of photosignal：
Mining optical fiber grating static state (FBG) demodulator receives the optical signal for the carryings ore deposit pressure information transmitted by optical fiber cable for mine, and by light
Signal is demodulated into after wavelength data by netting twine wavelength data being transferred to data signal visualization processing subsystem, wavelength data
It is converted into by being embedded in the data processor in data signal visualization processing subsystem in data server with real
The ore deposit pressure physical quantity of border meaning；
(4), the visualization processing of physical signalling：
Display terminal pre-stored data visualization procedure, program development during the ore deposit compacting of data signal visualization processing subsystem
Language is C#, and Runtime Library supports to be Microsoft.NET Framework 4.0, and IDE is Visual Studio
2010；Display terminal is communicated by mining LAN and data server when ore deposit is compacted presses physical quantity to obtain ore deposit, and by interior
Embedding data visualization program realizes real-time display and the printing function of ore deposit pressure chart and monitoring form；
Described data signal visualization processing subsystem, method of work is as follows：
When system starts, data signal visualization processing subsystem starts the data positioned at data server simultaneously
Processing routine and positioned at ore deposit be compacted when display terminal data visualization program；
Data processor is respectively completed two tasks by two threads, and one is to obtain Monitoring Data simultaneously from sensing network
Store in database, two be to provide service for data visualization program；
Thread 1：Timer thread：This thread is periodically quiet from mining optical fiber grating according to configuration file predetermined time interval
State (FBG) demodulator asks newest Monitoring Data, and data are analyzed, handled and changed, finally by Monitoring Data and data
The alarm data produced during reason is stored in database and is retained in temporal cache and used for data visualization program；
Timed events are realized by System.Timers.Timer ()；When startup is serviced, one is instantiated
System.Timers.Timer () object, and the attribute such as its time interval and generation pattern is set, start meter after the completion of setting
When device object；Timer from the static (FBG) demodulator of mining optical fiber grating can obtain a Monitoring Data every certain interval；
Thread 2：Server thread：Service thread is created by the multi-threading under System.Threading NameSpaces
Build, and run；Thread can monitor specific data server IP address and TCP port after starting, and wait data visualization to be received
The request of program, and respond request；
Data visualization program by mining Ethernet between data processor according to ICP/IP protocol with being communicated, and data can
Depending on changing program according to the monitoring IP address of protocol access data processor and port, request is sent, real-time ore deposit pressure thing is obtained
Data are managed, visualization processing is carried out to ore deposit pressure data by data real-time visual processing module, then exported by data visualization
Ore deposit is pressed chart and monitoring form to be presented on display terminal when ore deposit is compacted by module；So far, data visualization program completes a work
Circulate, remove temporal cache, free system resources prepare to send to data processor again and asked, start next work
Circulate.
Described wavelength data is converted to the transfer algorithm that ore deposit presses physical quantity：Fiber grating rock pressure sensor is based on light
Total reflection phenomenon, when light beam injection fibre grating, as long as effective reflection will be produced by meeting Bragg condition, reflected light
Peak wavelength is referred to as bragg wavelengthsB, in single-mode fiber, bragg wavelength is：
λB=2neffΛ (1)
In formula：neffThe effective refractive index of fibre core during for spread fiber, Λ is the cycle of grating；
When fiber bragg grating pressure sensor receives extraneous stress effects of strain, grating period A can change, simultaneously
The photoelastic effect of generation can make grating effective refractive index neffChange is produced, both changes cause the middle cardiac wave of Bragg grating
Long λBDrift about；
Ess-strain causes the drift value Δ λ of fiber grating reflection kernel wavelengthBMathematic(al) representation be：
ΔλB=λB(1-Pe)Δε (2)
In formula：peFor sensitivity coefficient；
Δ ε is fiber grating strain.
Wherein：
In formula：p11、p12For fiber grating elasto-optical coefficient；
μ is fiber grating Poisson's ratio.
For sensitivity coefficient p it can be seen from formula (3)eFor, its numerical values recited is decided by effective refraction of optical fiber
Rate, elasto-optical coefficient and Poisson's ratio.For a certain specific fiber grating, because its material property has been determined, therefore, pe
For constant.
Convolution (2) understands that the size of wavelength change and the size strained at fiber grating position are proportional, according to
The relation of Elasticity stress and strain can draw the stress born at fiber grating, i.e.,：
σ=E Δs ε (4)
In formula：σ is stress suffered by deformable body at paster；
E is the modulus of elasticity for the matrix for pasting fiber grating.
Formula (2) is arranged into substitution formula (4) to obtain：
Formula (5) is the stress intensity at fiber grating.
From formula (5), the wavelength variation values of each rock pressure sensor are obtained by mining optical fiber grating (FBG) demodulator, can be resolved
Go out stress value, and then may be calculated as out the axial force born at fiber grating.I.e.：
In formula：F is Tensity size suffered by rock pressure sensor；
S is matrix part of the force sectional area；
E is the modulus of elasticity for the matrix for pasting fiber grating；
The transfer algorithm for being converted to ore deposit pressure physical quantity based on fiber grating rock pressure sensor, wavelength basis data by more than is led
The mathematical modeling gone out is packaged into the data demodulation modular converter with program, is embedded in data signal visualization processing subsystem
In, realize that fiber grating reflection wavelength signal is demodulated into the ore deposit with practical significance presses data.
Described data visualization program is by calling in IDE Visual Studio 2010
Ore deposit is pressed physical data by System.Windows.Forms.Data Visualization.Charting.Chart controls, realization
The function that simple and clear ore deposit presses chart is depicted as, Microsoft.Office.Interop.Word controls are quoted by adding,
Realize the function that the analysis result that above several parts have been completed is exported to ore pressure monitor form by cannonical format.
Described data visualization output module includes roadway's sides vertical stress in the chart that real-time display terminal is shown
Distribution curve, borehole stressmeter monitor value historical variations curve, anchor pole, anchor cable load histories change curve, anchor pole axial force point
Each measuring point historical variations curve of cloth curve, anchor pole axial force, force piece pressure distribution curve, force piece pressure are respectively surveyed
Point historical variations curve；The ore pressure monitor form of output is mainly divided to two kinds, i.e. Microsoft Office .doc file formats
Integrative analysis report, another is the data form of Microsoft Office .xls file formats.
Beneficial effect：As a result of such scheme, by arranging that fibre optical sensor gathers ore deposit and presses signal in underground coal mine,
Ore deposit presses signal to be transferred to the static (FBG) demodulator of mining optical fiber grating, mining optical fiber grating steady-state solution by optical fiber cable for mine with form of light waves
It is wavelength data by optical signal demodulation to adjust instrument, and data signal visualization processing subsystem is by the algorithm of specialty by wavelength data solution
It is adjusted to ore deposit pressure physical quantity and automatically output visualization ore deposit pressure chart and ore pressure monitor report.Demodulating system is comprehensively polynary, expansion
By force, processing can be demodulated to coal mine roadway and the various ore deposit pressure signals of working face according to actual needs；System equipment essential safety,
The underground coal mine environment for the dangerous complexity that is particularly suitable for use in；Demodulating algorithm is strongly professional, more accurate to ore deposit pressure signal demodulation；Demodulation
As a result it is clear and intuitive, press signal to be directly presented on remote terminal in the form of ore deposit presses chart and monitoring form ore deposit, visualize journey
Degree is high；System response is timely and effective, and Underground pressure monitoring result can be dynamically provided in real time, and makes early warning and suggestion, and auxiliary is determined
Plan person judges, it is advantageously ensured that safety of coal mines is efficiently produced.
The present invention has advantages below compared with conventional art：
1st, demodulating system is comprehensively polynary, and expansion is strong, can be according to actual needs to coal mine roadway and the various ore deposit pressures of working face
Signal is demodulated processing；
2nd, system equipment essential safety, the underground coal mine environment for the dangerous complexity that is particularly suitable for use in；
3rd, signal transmission antijamming capability is good, and signal demodulating algorithm is strongly professional, and ore deposit pressure signal demodulation more accurately may be used
Lean on；
4th, result is presented clear and intuitive, presses signal directly to include in the form of ore deposit presses chart and monitoring form long-range ore deposit
Terminal, visualization is high；
5th, system response is timely and effective, and Underground pressure monitoring result can be dynamically provided in real time, and makes early warning and suggestion, auxiliary
Policymaker is helped to judge, it is advantageously ensured that safety of coal mines is efficiently produced.
Brief description of the drawings
Fig. 1 constitutes frame construction drawing for the system of the present invention.
Fig. 2 is the data server structure chart of the data signal visualization processing subsystem of the present invention.
Fig. 3 is the data server workflow diagram of the data signal visualization processing subsystem of the present invention.
Fig. 4 presses signal conversion process schematic diagram for the ore deposit of the present invention.
Embodiment
One embodiment of the present of invention is further described below in conjunction with the accompanying drawings：
Embodiment 1：The present invention includes ore deposit pressure signal real-time visual demodulating system and demodulation method based on Fibre Optical Sensor,
Described ore deposit pressure signal real-time visual demodulating system：Including ore deposit pressure signal acquisition subsystem, optical signal transmission
System, photoelectric signal transformation subsystem and data signal visualization processing subsystem；Ore deposit pressure signal acquisition subsystem, optical signal are passed
Defeated subsystem, photoelectric signal transformation subsystem and data signal visualization processing subsystem are linked in sequence；
Photoelectric signal transformation subsystem and data signal visualization processing subsystem are located on well；
Ore deposit pressure signal acquisition subsystem is connected with optical signal transmission subsystem by optical fiber, and positioned at underground.
Described ore deposit pressure signal acquisition subsystem includes one group or several groups in fiber grating rock pressure sensor：Described light
Fine grating rock pressure sensor is fiber grating borehole stressmeter, optical fiber grating anchor ergometer, fiber grating force-measuring anchor stock or light
Fine light barrier holder pressure gauge；Described fiber grating rock pressure sensor is arranged on roadway surrounding rock, anchor pole, anchor cable or work as needed
Make on the hydraulic support of face, perceive ore deposit pressure signal.
Described optical signal transmission subsystem includes optical fiber pigtail, optical Fiber Closure and mining transmission cable；Wherein optical fiber
One end of tail optical fiber is connected with fiber grating rock pressure sensor, and the other end is linked into mining transmission cable, shape by optical Fiber Closure
Into optical signal transmission path.
Described photoelectric signal transformation subsystem has the static (FBG) demodulator of mining optical fiber grating, mining optical fiber grating static state demodulation
The input of instrument is connected with the mining transmission cable in optical signal transmission subsystem, the output of mining optical fiber grating static state (FBG) demodulator
End is connected with the data server input of data signal visualization processing subsystem；Mining optical fiber grating static state (FBG) demodulator is received
The carrying ore deposit transmitted by optical fiber cable for mine presses the optical signal of information, and is by wavelength after wavelength data by netting twine by optical signal demodulation
Data are transferred to data signal visualization processing subsystem.
Described data signal visualization processing subsystem includes display terminal when data server and ore deposit compacting；Data take
Business device carries out reception storage, demodulation conversion to wavelength signals by embedded data processor, analyzes and predict, and by mining
Display terminal carries out data communication when LAN is compacted with ore deposit, and display terminal passes through embedded data visualization program when ore deposit is compacted
Realize the real-time display of ore deposit pressure chart and monitoring form.
The data server of described data signal visualization processing subsystem includes Data Storage, data solution
Adjust modular converter and data analysis prediction module, display terminal bag when described data signal visualization processing subsystem ore deposit is compacted
Include data real-time visual processing module and data visualization output module；Data Storage, data demodulation modulus of conversion
Block, data analysis prediction module, data real-time visual processing module and data visualization output module are linked in sequence；It is described
's：
(a) Data Storage, reception, storage with data, backup functionality；
(b) data demodulation modular converter, ore deposit pressure physical quantity is converted to wavelength data is demodulated by special algorithm
Function；
(c) data analysis prediction module, safety analysis, Error processing, early-warning and predicting with data are simultaneously advised
Function；
(d) data real-time visual processing module, chart, generation ore pressure monitor form are pressed simultaneously with ore deposit is drawn according to data
The function of real-time update；
(e) data visualization output module, buckles line diagram and ore pressure monitor form screen display function with ore deposit.
Described Data Storage sends data according to the frequency of setting to the static (FBG) demodulator of mining optical fiber grating
Ask and obtain data, it is timely and effective to ensure that ore deposit pressure signal visualization interface refreshes in real time.
Described presses the demodulation method of signal visualization demodulating system to be demodulated as follows based on ore deposit：
(1), system is installed：
A, ore deposit press the installation of signal acquisition subsystem：According to ore pressure monitor demand, different fiber grating ore deposits is pressed and sensed
Device is arranged on corresponding monitoring measuring point；
B, optical signal transmission subsystem installation：One end of optical fiber pigtail by optical Fiber Closure with being linked into mining transmission
Optical cable, forms optical signal transmission path；
C, photoelectric signal transformation subsystem installation：The static (FBG) demodulator of mining optical fiber grating is placed in coalmine dispatching room,
(FBG) demodulator IP address is set, (FBG) demodulator initialized and calibration, it is ensured that its normal work；
D, data signal visualization processing subsystem are installed：Data server is placed in coalmine dispatching room, will be based on C# languages
The data processor of the IDEs of Visual Studio 2010 of making peace exploitation is installed to data server and debugged, if
Server ip address is put；Display terminal is placed in colliery leader and production technique personnel office when ore deposit is compacted, in terminal
Installation data visualization procedure is simultaneously debugged to normal work；Display terminal passes through mining LAN when data server and ore deposit compacting
Realize data communication and shared；
E, each subsystem UNICOM：The fiber grating rock pressure sensor of ore deposit pressure signal acquisition subsystem and optical signal transmission
The tail optical fiber of system is connected, the mining transmission cable of optical signal transmission subsystem and the mine optical fiber of photoelectric signal transformation subsystem
Grating static state (FBG) demodulator is connected, the data, services of mining optical fiber grating static state (FBG) demodulator and data signal visualization processing subsystem
Device passes through mining Local network communication.
(2), ore deposit pressure signal acquisition and transmission：
The fibre optical sensor arranged by underground gathers ore deposit and presses signal, and ore deposit pressure signal is passed with form of light waves by optical fiber cable for mine
It is defeated by the static (FBG) demodulator of mining optical fiber grating；
(3), the demodulation and conversion of photosignal：
Mining optical fiber grating static state (FBG) demodulator receives the optical signal for the carryings ore deposit pressure information transmitted by optical fiber cable for mine, and by light
Signal is demodulated into after wavelength data by netting twine wavelength data being transferred to data signal visualization processing subsystem, wavelength data
It is converted into by being embedded in the data processor in data signal visualization processing subsystem in data server with real
The ore deposit pressure physical quantity of border meaning；
(4), the visualization processing of physical signalling：
Display terminal pre-stored data visualization procedure, program development during the ore deposit compacting of data signal visualization processing subsystem
Language is C#, and Runtime Library supports to be Microsoft.NET Framework 4.0, and IDE is Visual Studio
2010；Display terminal is communicated by mining LAN and data server when ore deposit is compacted presses physical quantity to obtain ore deposit, and by interior
Embedding data visualization program realizes real-time display and the printing function of ore deposit pressure chart and monitoring form；
Described data signal visualization processing subsystem, method of work is as follows：
When system starts, data signal visualization processing subsystem starts the data positioned at data server simultaneously
Processing routine and positioned at ore deposit be compacted when display terminal data visualization program；
Data processor is respectively completed two tasks by two threads, and one is to obtain Monitoring Data simultaneously from sensing network
Store in database, two be to provide service for data visualization program；
Thread 1：Timer thread：This thread is periodically quiet from mining optical fiber grating according to configuration file predetermined time interval
State (FBG) demodulator asks newest Monitoring Data, and data are analyzed, handled and changed, finally by Monitoring Data and data
The alarm data produced during reason is stored in database and is retained in temporal cache and used for data visualization program；
Timed events are realized by System.Timers.Timer ()；When startup is serviced, one is instantiated
System.Timers.Timer () object, and the attribute such as its time interval and generation pattern is set, start meter after the completion of setting
When device object；Timer from the static (FBG) demodulator of mining optical fiber grating can obtain a Monitoring Data every certain interval；
Thread 2：Server thread：Service thread is created by the multi-threading under System.Threading NameSpaces
Build, and run；Thread can monitor specific data server IP address and TCP port after starting, and wait data visualization to be received
The request of program, and respond request；
Data visualization program by mining Ethernet between data processor according to ICP/IP protocol with being communicated, and data can
Depending on changing program according to the monitoring IP address of protocol access data processor and port, request is sent, real-time ore deposit pressure thing is obtained
Data are managed, visualization processing is carried out to ore deposit pressure data by data real-time visual processing module, then exported by data visualization
Ore deposit is pressed chart and monitoring form to be presented on display terminal when ore deposit is compacted by module；So far, data visualization program completes a work
Circulate, remove temporal cache, free system resources prepare to send to data processor again and asked, start next work
Circulate.
Described wavelength data is converted to the transfer algorithm that ore deposit presses physical quantity：Fiber grating rock pressure sensor is based on light
Total reflection phenomenon, when light beam injection fibre grating, as long as effective reflection will be produced by meeting Bragg condition, reflected light
Peak wavelength is referred to as bragg wavelengthsB, in single-mode fiber, bragg wavelength is：
λB=2neffΛ (1)
In formula：neffThe effective refractive index of fibre core during for spread fiber, Λ is the cycle of grating；
When fiber bragg grating pressure sensor receives extraneous stress effects of strain, grating period A can change, simultaneously
The photoelastic effect of generation can make grating effective refractive index neffChange is produced, both changes cause the middle cardiac wave of Bragg grating
Long λBDrift about；
Ess-strain causes the drift value Δ λ of fiber grating reflection kernel wavelengthBMathematic(al) representation be：
ΔλB=λB(1-Pe)Δε (2)
In formula：peFor sensitivity coefficient；
Δ ε is fiber grating strain.
Wherein：
In formula：p11、p12For fiber grating elasto-optical coefficient；
μ is fiber grating Poisson's ratio.
For sensitivity coefficient p it can be seen from formula (3)eFor, its numerical values recited is decided by effective refraction of optical fiber
Rate, elasto-optical coefficient and Poisson's ratio.For a certain specific fiber grating, because its material property has been determined, therefore, pe
For constant.
Convolution (2) understands that the size of wavelength change and the size strained at fiber grating position are proportional, according to
The relation of Elasticity stress and strain can draw the stress born at fiber grating, i.e.,：
σ=E Δs ε (4)
In formula：σ is stress suffered by deformable body at paster；
E is the modulus of elasticity for the matrix for pasting fiber grating.
Formula (2) is arranged into substitution formula (4) to obtain：
Formula (5) is the stress intensity at fiber grating.
From formula (5), the wavelength variation values of each rock pressure sensor are obtained by mining optical fiber grating (FBG) demodulator, can be resolved
Go out stress value, and then may be calculated as out the axial force born at fiber grating.I.e.：
In formula：F is Tensity size suffered by rock pressure sensor；
S is matrix part of the force sectional area；
E is the modulus of elasticity for the matrix for pasting fiber grating；
The transfer algorithm for being converted to ore deposit pressure physical quantity based on fiber grating rock pressure sensor, wavelength basis data by more than is led
The mathematical modeling gone out is packaged into the data demodulation modular converter with program, is embedded in data signal visualization processing subsystem
In, realize that fiber grating reflection wavelength signal is demodulated into the ore deposit with practical significance presses data.
Described data real-time visual processing module is by calling in IDE Visual Studio 2010
System.Windows.Forms.Data Visualization.Charting.Chart controls, realize by ore deposit press physics number
According to the function of being depicted as simple and clear ore deposit pressure chart, pass through to add and quote Microsoft.Office.Interop.Word controls
Part, realizes the function that the analysis result that above several parts have been completed is exported to ore pressure monitor form by cannonical format.
Described data visualization output module includes roadway's sides vertical stress in the chart that real-time display terminal is shown
Distribution curve, borehole stressmeter monitor value historical variations curve, anchor pole, anchor cable load histories change curve, anchor pole axial force point
Each measuring point historical variations curve of cloth curve, anchor pole axial force, force piece pressure distribution curve, force piece pressure are respectively surveyed
Point historical variations curve；The ore pressure monitor form of output is mainly divided to two kinds, i.e. Microsoft Office .doc file formats
Integrative analysis report, another is the data form of Microsoft Office .xls file formats.
Claims (9)
1. a kind of ore deposit pressure signal real-time visual demodulating system based on Fibre Optical Sensor, it is characterized in that：Described ore deposit pressure signal is real
When visualize demodulating system：Including ore deposit pressure signal acquisition subsystem, optical signal transmission subsystem, photoelectric signal transformation subsystem and
Data signal visualization processing subsystem；Ore deposit pressure signal acquisition subsystem, optical signal transmission subsystem, photoelectric signal transformation subsystem
System and data signal visualization processing subsystem are linked in sequence；
Photoelectric signal transformation subsystem and data signal visualization processing subsystem are located on well；
Ore deposit pressure signal acquisition subsystem is connected with optical signal transmission subsystem by optical fiber, and positioned at underground.
2. a kind of ore deposit pressure signal real-time visual demodulating system based on Fibre Optical Sensor according to claim 1, its feature
It is：Described ore deposit pressure signal acquisition subsystem includes one group or several groups in fiber grating rock pressure sensor：Described optical fiber
Grating rock pressure sensor is fiber grating borehole stressmeter, optical fiber grating anchor ergometer, fiber grating force-measuring anchor stock or optical fiber
Light barrier holder pressure gauge；Described fiber grating rock pressure sensor is arranged on roadway surrounding rock, anchor pole, anchor cable or work as needed
On the hydraulic support of face, ore deposit pressure signal is perceived；
Described optical signal transmission subsystem includes optical fiber pigtail, optical Fiber Closure and mining transmission cable；Wherein optical fiber pigtail
One end be connected with fiber grating rock pressure sensor, the other end is linked into mining transmission cable by optical Fiber Closure, forms light
Signal transmission pathway；
Described photoelectric signal transformation subsystem has the static (FBG) demodulator of mining optical fiber grating, mining optical fiber grating static state (FBG) demodulator
Input is connected with the mining transmission cable in optical signal transmission subsystem, mining optical fiber grating static state (FBG) demodulator output end with
The data server input connection of data signal visualization processing subsystem；
Described data signal visualization processing subsystem includes display terminal when data server and ore deposit compacting；Data server
Display terminal is connected when being compacted by mining LAN with ore deposit.
3. a kind of ore deposit pressure signal real-time visual demodulating system based on Fibre Optical Sensor according to claim 1, its feature
It is：The data server of described data signal visualization processing subsystem includes Data Storage, data and demodulated
Modular converter and data analysis prediction module, display terminal includes when described data signal visualization processing subsystem ore deposit is compacted
Data real-time visual processing module and data visualization output module；Data Storage, data demodulation modular converter,
Data analysis prediction module, data real-time visual processing module and data visualization output module are linked in sequence；Described：
(a) Data Storage, reception, storage with data, backup functionality；
(b) data demodulation modular converter, the function that ore deposit presses physical quantity is converted to wavelength data is demodulated by special algorithm；
(c) data analysis prediction module, safety analysis, Error processing, early-warning and predicting and the work(advised with data
Energy；
(d) data real-time visual processing module, with drawing ore deposit pressure chart, generation ore pressure monitor form and real-time according to data
The function of renewal；
(e) data visualization output module, buckles line diagram and ore pressure monitor form screen display function with ore deposit.
Described Data Storage sends request of data according to the frequency of setting to the static (FBG) demodulator of mining optical fiber grating
And data are obtained, it is timely and effective to ensure that ore deposit pressure signal visualization interface refreshes in real time.
4. a kind of ore deposit based on Fibre Optical Sensor according to claim 1 presses the demodulation side of signal real-time visual demodulating system
Method, it is characterised in that：Described presses the demodulation method of signal visualization demodulating system to be demodulated as follows based on ore deposit：
(1), system is installed；(2), ore deposit pressure signal acquisition and transmission；(3), the demodulation of photosignal and conversion and (4), physical signalling
Visualization processing.
5. a kind of ore deposit based on Fibre Optical Sensor according to claims 4 presses the demodulation of signal real-time visual demodulating system
Method, it is characterised in that：
(1), system is installed：
A, ore deposit press the installation of signal acquisition subsystem：According to ore pressure monitor demand, different fiber grating rock pressure sensors is pacified
Mounted in corresponding monitoring measuring point；
B, optical signal transmission subsystem installation：One end of optical fiber pigtail by optical Fiber Closure with being linked into mining transmission light
Cable, forms optical signal transmission path；
C, photoelectric signal transformation subsystem installation：The static (FBG) demodulator of mining optical fiber grating is placed in coalmine dispatching room, set
(FBG) demodulator IP address, is initialized and calibration to (FBG) demodulator, it is ensured that its normal work；
D, data signal visualization processing subsystem are installed：Data server is placed in coalmine dispatching room, will based on C# language and
The data processor of the IDEs of Visual Studio 2010 exploitation is installed to data server and debugged, and sets
Server ip address；Display terminal is placed in colliery leader and production technique personnel office when ore deposit is compacted, and is installed in terminal
Data visualization program is simultaneously debugged to normal work；Display terminal is realized by mining LAN when data server and ore deposit compacting
Data communication and shared；
E, each subsystem UNICOM：The fiber grating rock pressure sensor and optical signal transmission subsystem of ore deposit pressure signal acquisition subsystem
Tail optical fiber be connected, the mining transmission cable of optical signal transmission subsystem and the mining optical fiber grating of photoelectric signal transformation subsystem
Static (FBG) demodulator is connected, and the data server of mining optical fiber grating static state (FBG) demodulator and data signal visualization processing subsystem leads to
Cross mining Local network communication；
(2), ore deposit pressure signal acquisition and transmission：
The fibre optical sensor arranged by underground gathers ore deposit and presses signal, and ore deposit pressure signal is transferred to form of light waves by optical fiber cable for mine
Mining optical fiber grating static state (FBG) demodulator；
(3), the demodulation and conversion of photosignal：
Mining optical fiber grating static state (FBG) demodulator receives the optical signal for the carryings ore deposit pressure information transmitted by optical fiber cable for mine, and by optical signal
It is demodulated into after wavelength data by netting twine and wavelength data is transferred to data signal visualization processing subsystem, wavelength data passes through
The data processor in data signal visualization processing subsystem in data server is embedded in be converted into actual meaning
The ore deposit pressure physical quantity of justice；
(4), the visualization processing of physical signalling：
Display terminal pre-stored data visualization procedure, program development language during the ore deposit compacting of data signal visualization processing subsystem
For C#, Runtime Library supports to be Microsoft.NET Framework 4.0, and IDE is Visual Studio
2010；Display terminal is communicated by mining LAN and data server when ore deposit is compacted presses physical quantity to obtain ore deposit, and by interior
Embedding data visualization program realizes real-time display and the printing function of ore deposit pressure chart and monitoring form.
6. a kind of ore deposit based on Fibre Optical Sensor according to claim 5 presses the demodulation side of signal real-time visual demodulating system
Method, it is characterised in that：Described data signal visualization processing subsystem, method of work is as follows：
When system starts, data signal visualization processing subsystem starts the data processing positioned at data server simultaneously
Program and positioned at ore deposit be compacted when display terminal data visualization program；
Data processor is respectively completed two tasks by two threads, and one is to obtain Monitoring Data from sensing network and store
Into database, two be to provide service for data visualization program；
Thread 1：Timer thread：This thread is according to configuration file predetermined time interval periodically from mining optical fiber grating steady-state solution
Adjust instrument to ask newest Monitoring Data, and data are analyzed, handled and changed, finally treat Monitoring Data and data
The alarm data produced in journey is stored in database and is retained in temporal cache and used for data visualization program；
Timed events are realized by System.Timers.Timer ()；When startup is serviced, one is instantiated
System.Timers.Timer () object, and the attribute such as its time interval and generation pattern is set, start meter after the completion of setting
When device object；Timer from the static (FBG) demodulator of mining optical fiber grating can obtain a Monitoring Data every certain interval；
Thread 2：Server thread：Service thread is created by the multi-threading under System.Threading NameSpaces,
And run；Thread can monitor specific data server IP address and TCP port after starting, and wait data visualization program to be received
Request, and respond request；
Data visualization program by mining Ethernet between data processor according to ICP/IP protocol with being communicated, data visualization
Program sends request according to the monitoring IP address of protocol access data processor and port, obtains real-time ore deposit pressure physics number
According to by data real-time visual processing module to ore deposit pressure data progress visualization processing, then by data visualization output module
Display terminal when ore deposit pressure chart and monitoring form are presented on into ore deposit compacting；So far, one work of data visualization program completion is followed
Ring, removes temporal cache, and free system resources prepare to send to data processor again and asked, start next work and follow
Ring.
7. a kind of ore deposit based on Fibre Optical Sensor according to claim 5 presses the demodulation side of signal real-time visual demodulating system
Method, it is characterised in that：Described wavelength data is converted to the transfer algorithm that ore deposit presses physical quantity：Fiber grating rock pressure sensor is base
In the total reflection phenomenon of light, when light beam injection fibre grating, as long as effective reflection will be produced by meeting Bragg condition, instead
Penetrate the peak wavelength referred to as bragg wavelengths of lightB, in single-mode fiber, bragg wavelength is：
λB=2neffΛ (1)
In formula：neffThe effective refractive index of fibre core during for spread fiber, Λ is the cycle of grating；
When fiber bragg grating pressure sensor receives extraneous stress effects of strain, grating period A can change, and produce simultaneously
Photoelastic effect can make grating effective refractive index neffChange is produced, both changes cause the central wavelength lambda of Bragg gratingB
Drift about；
Ess-strain causes the drift value Δ λ of fiber grating reflection kernel wavelengthBMathematic(al) representation be：
ΔλB=λB(1-Pe)Δε (2)
In formula：peFor sensitivity coefficient；
Δ ε is fiber grating strain.
Wherein：
<mrow>
<msub>
<mi>p</mi>
<mi>e</mi>
</msub>
<mo>=</mo>
<mfrac>
<msubsup>
<mi>n</mi>
<mrow>
<mi>e</mi>
<mi>f</mi>
<mi>f</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mn>2</mn>
</mfrac>
<mo>&lsqb;</mo>
<msub>
<mi>p</mi>
<mn>12</mn>
</msub>
<mo>-</mo>
<mi>&mu;</mi>
<mrow>
<mo>(</mo>
<msub>
<mi>p</mi>
<mn>11</mn>
</msub>
<mo>+</mo>
<msub>
<mi>p</mi>
<mn>12</mn>
</msub>
<mo>)</mo>
</mrow>
<mo>&rsqb;</mo>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula：p11、p12For fiber grating elasto-optical coefficient；
μ is fiber grating Poisson's ratio.
For sensitivity coefficient p it can be seen from formula (3)eFor, its numerical values recited is decided by the effective refractive index of optical fiber, bullet light
Coefficient and Poisson's ratio.For a certain specific fiber grating, because its material property has been determined, therefore, peFor constant.
Convolution (2) understands that the size of wavelength change and the size strained at fiber grating position are proportional, according to elasticity
Mechanical stress and the relation of strain can draw the stress born at fiber grating, i.e.,：
σ=E Δs ε (4)
In formula：σ is stress suffered by deformable body at paster；
E is the modulus of elasticity for the matrix for pasting fiber grating.
Formula (2) is arranged into substitution formula (4) to obtain：
<mrow>
<mi>&sigma;</mi>
<mo>=</mo>
<mi>E</mi>
<mfrac>
<mrow>
<msub>
<mi>&Delta;&lambda;</mi>
<mi>B</mi>
</msub>
</mrow>
<mrow>
<msub>
<mi>&lambda;</mi>
<mi>B</mi>
</msub>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>P</mi>
<mi>e</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
3
Formula (5) is the stress intensity at fiber grating；
From formula (5), the wavelength variation values of each rock pressure sensor are obtained by mining optical fiber grating (FBG) demodulator, can calculate should
Force value, and then may be calculated as out the axial force born at fiber grating；I.e.：
<mrow>
<mi>F</mi>
<mo>=</mo>
<mi>S</mi>
<mo>&CenterDot;</mo>
<mi>E</mi>
<mfrac>
<mrow>
<msub>
<mi>&Delta;&lambda;</mi>
<mi>B</mi>
</msub>
</mrow>
<mrow>
<msub>
<mi>&lambda;</mi>
<mi>B</mi>
</msub>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>P</mi>
<mi>e</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula：F is Tensity size suffered by rock pressure sensor；
S is matrix part of the force sectional area；
E is the modulus of elasticity for the matrix for pasting fiber grating；
Derived from the transfer algorithm for being converted to ore deposit pressure physical quantity based on fiber grating rock pressure sensor, wavelength basis data by more than
Mathematical modeling is packaged into the data demodulation modular converter with program, is embedded in data signal visualization processing subsystem, real
Fiber grating reflection wavelength signal is now demodulated into the ore deposit with practical significance and presses physical data.
8. a kind of ore deposit pressure signal real-time visual demodulating system and demodulation based on Fibre Optical Sensor according to claims 6
Method, it is characterised in that：Data visualization program is by calling in IDE Visual Studio 2010
Ore deposit is pressed physical data by System.Windows.Forms.DataVisualization.Charting.Chart controls, realization
The function that simple and clear ore deposit presses chart is depicted as, Microsoft.Office.Interop.Word controls are quoted by adding,
Realize the function that the analysis result that above several parts have been completed is exported to ore pressure monitor form by cannonical format.
9. a kind of ore deposit based on Fibre Optical Sensor according to claims 6 presses the demodulation of signal real-time visual demodulating system
Method, it is characterised in that：Described data real-time visual output module includes tunnel in the chart that real-time display terminal is shown
Two help vertical stress distribution curve, borehole stressmeter monitor value historical variations curve, anchor pole, anchor cable load histories change curve,
Each measuring point historical variations curve of anchor pole axial force distribution curve, anchor pole axial force, force piece pressure distribution curve, working face
Each measuring point historical variations curve of poppet pressure；The ore pressure monitor form of output is mainly divided to two kinds, i.e. Microsoft Office's
.doc the integrative analysis report of file format, another is the data form of Microsoft Office .xls file formats.
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Address after: 221116 Research Institute of China University of Mining and Technology,, Jiangsu Applicant after: China University of Mining & Technology Address before: 221116 Research Institute, China University of Mining and Technology, Xuzhou University, Jiangsu, China, Applicant before: China University of Mining & Technology |
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Application publication date: 20171013 |