CN106872070A - A kind of optical fiber composite cable expert diagnostic system based on many reference amounts - Google Patents
A kind of optical fiber composite cable expert diagnostic system based on many reference amounts Download PDFInfo
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- CN106872070A CN106872070A CN201611249964.5A CN201611249964A CN106872070A CN 106872070 A CN106872070 A CN 106872070A CN 201611249964 A CN201611249964 A CN 201611249964A CN 106872070 A CN106872070 A CN 106872070A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
The invention belongs to Safety of Coal Mine Production and power equipment running status assessment diagnostic techniques field, a kind of optical fiber composite cable expert diagnostic system based on many reference amounts, including temperature and positioning measurment system, shelf depreciation system for measuring quantity, dielectric loss measurement system, elongation at break measuring system, mechanical stress measuring system, expert diagnosis host computer system and host computer.A kind of many reference amounts optical fiber composite cable expert diagnostic system realizes temperature monitoring and early warning, continuous monitoring optical fiber composite cable running temperature be accurately positioned, partial discharge quantity, the on-line monitoring of the electric parameters such as dielectric loss and diagnostic assessment, realize elongation at break, the monitoring and diagnostic assessment of the mechanical parameters such as mechanical stress, breach the deficiencies in the prior art, give full play to the efficient of the expert diagnostic system, accurately, the comprehensive diagnos assessment of many reference amounts, farthest monitor the running status of optical fiber composite cable, realize the accurate prediction in optical fiber composite cable life-span and the target of highly effective and safe application.
Description
Technical field
It is that assessment optical fiber is answered the invention belongs to Safety of Coal Mine Production and power equipment running status assessment diagnostic techniques field
The key point of cable residual life and health status is closed, is related to a kind of optical fiber composite cable expert diagnosis system based on many reference amounts
System.
Background technology
Used as one of capital equipment in Coal Mine Power Distribution System, its operational reliability and continuity are to ensure coal to high-tension cable
Ore deposit safety and the efficiently key of production.Underground coal mine working condition is severe, high humidity, cable needs often to move again, dragging or
Bending, there are some researches show the accident triggered by cable accounts for 70% or so of accident of power supply under mine.High-tension cable is in actual fortune
During row, inevitably acted on by electricity, heat, mechanical stress and acid, alkali, salt, coal dust, cause insulation old
Change, reduce the insulating properties of cable, cause cable shelf depreciation occur, or even along face spark or arc discharge.Due to coal mine
Under have that gas explosion is dangerous, electric discharge would be possible to trigger fire or blast, have a strong impact on personnel in the pit and property safety.
With the development of science and technology, fault diagnosis technology development mainly experienced three phases：Primary stage, Suo Youshe
The standby fault diagnosis in this stage relies primarily on expertise to complete, and general precision is not very high, and cannot realize online
Diagnosis, so such method has significant limitation；Intermediate stage, the fault diagnosis in this stage is main to be processed with fault-signal
It is Main Means with fault modeling, diagnosis effect is often determined by level detection signal；The fault diagnosis technology in this stage oneself
It is single by detecting DC component method, shelf depreciation method, the low frequency addition method and power frequency method etc. through in the Intelligent Diagnosis Technology stage
Characteristic quantity carries out life appraisal to equipment.But during the diagnosis of this kind of complication system of electrical equipment, can be by harmonic wave point
The measurement error influence certainty of measurement of amount, single characteristics quantity obviously has limitation.
A kind of expert diagnostic system based on many reference amounts is not formed for existing optical fiber composite cable assessment diagnostic method,
It is difficult to the residual life and health status of efficiently assessment diagnosis optical fiber composite cable.The invention provides based on many reference amounts
Optical fiber composite cable expert diagnostic system, the one-dimensional information fusion such as thermodynamic parameter, electric parameter and mechanical parameter is got up shape
Into multidimensional information, the running status of comprehensive comprehensively assessment diagnosis optical fiber composite cable.This system realizes optical fiber composite cable
The temperature monitoring of engineering and early warning, continuous monitoring optical fiber composite cable running temperature and it is accurately positioned, also achieves shelf depreciation
The machinery such as electric parameter and elongation at break, mechanical stress such as on-line monitoring and assessment, dielectric loss on-line monitoring and assessment
Parameter is diagnosed and assessed, with actual application value higher.
The content of the invention
A kind of many reference amounts optical fiber composite cable expert diagnostic system of the invention realizes temperature monitoring with early warning, continuous prison
Survey optical fiber composite cable running temperature and be accurately positioned, realize the online prison of the electric parameters such as partial discharge quantity, dielectric loss
Survey and diagnostic assessment, realize the monitoring and diagnostic assessment of the mechanical parameters such as elongation at break, mechanical stress, breach existing skill
The deficiency of art, gives full play to efficient, accurate, many reference amounts the comprehensive diagnos assessment of the expert diagnostic system, farthest supervises
The running status of optical fiber composite cable is surveyed, the accurate prediction in optical fiber composite cable life-span and the target of highly effective and safe application is realized.
Technical scheme：
A kind of optical fiber composite cable expert diagnostic system based on many reference amounts, including temperature and positioning measurment system, part
Electric discharge system for measuring quantity, dielectric loss measurement system, elongation at break measuring system, mechanical stress measuring system, expert diagnosis
Host computer system and host computer.
Temperature and positioning measurment system optical fiber temperature measurement host and acoustooptic alarm system.
Optical fiber temperature measurement host include power module, mainboard, liquid crystal control module, communication module, light path design road module and
Circuit design module；Power module is liquid crystal control module and main board power supply；Mainboard control liquid crystal control module, communication module and
Signal processing module (light path module and circuit module), realizes that mainboard is configured with the connection of each module；Communication module realizes optical fiber
The data communication of thermometric main frame.
Light path design module is made up of light emission module and optical modulator module；Light emission module includes laser module and light
Fiber amplifier module；Optical modulator module includes fiber coupler and optical filter, and fiber coupler includes Raman scattering module, light
Electric detecting module and sensing optic cable module；Laser module sends pulsed optical signals, and pulse is lifted via fibre-optical amplifier module
Light energy, the pulsed light after lifting is directly transferred in optical fiber composite cable embedded with temperature-sensing optical fiber through Raman scattering module,
Propagated in optical fiber composite cable, while constantly there is rear orientation light, return to Raman scattering module, via two-way optical filter, point
The stokes light and anti-Stokes light in rear orientation light are not filtered out, are directly entered the photoelectric conversion module of circuit module
In.
Circuit design module includes acquisition processing module and photoelectric conversion module；Acquisition processing module includes terminal management system
System, processing unit and Acquisition Circuit；Photoelectric conversion module includes photodetector and two-way amplifier；Photoelectric conversion module is docked
The stokes light and anti-Stokes light of the optical filter selection in the light path module for receiving, via two-way amplifier by signal
Amplify and realize opto-electronic conversion, convert light signals into electric signal, be directly entered acquisition processing module；The end of acquisition processing module
End management system, processing unit and Acquisition Circuit are integrated in mainboard, and mainboard uses MCU+FPGA frameworks；FPGA control collection electricity
Road, MCU control peripheral hardware initialization；The data of FPGA collections are communicated with the CPU of terminal management system, then by LAN network interfaces
Being stored after data transfer to expert diagnosis host computer system, line number is entered in the center of the centralized monitor module of expert diagnosis host computer system
According to computing, and result is coloured the modes such as display and shown in host computer by temperature curve, Thermogram, electronic map.
Acoustooptic alarm system includes temperature control circuit module and communication circuit module, and temperature control circuit module is two-way, is carried respectively
For constant temperature to laser module and photodetector；When temperature control circuit module measurement temperature exceedes optical fiber composite cable temperature sensing optical fiber
Higher limit when, communication circuit module control acoustooptic alarm system send automatically sound, LED light, word, image etc. alarm
Signal.
Shelf depreciation system for measuring quantity includes power module, sensor assembly, wireless transport module, signal acquisition process mould
Block, data processing module, data communication module and display module；Power module be sensor assembly, signal acquisition process module,
Data processing module and data communication module are powered；Sensor assembly is provided with high frequency sensors and extra-high video sensor, its Cheng Yuan
Tubular is laid in the external insulation surface of optical fiber composite cable, and the discharge signal that will be detected is transferred to letter by wireless transport module
Number acquisition processing module, is changed by A/D and is directly entered data processing module, and discharge signal data are carried out with Multilevel method, then
Discharge signal data message to expert diagnosis host computer system is transmitted by data communication module to be stored.On the one hand, by special
The Database Systems of family's diagnosis host computer system call corresponding discharge information to feed back to the display mould of shelf depreciation system for measuring quantity
Block, realizes the on-line monitoring of optical fiber composite cable shelf depreciation；On the other hand, by expert diagnosis host computer system to shelf depreciation
Signal carries out real-time characteristic amount extraction, and is contrasted with expert diagnosis assessment database standard amount analysis, then the characteristic quantity that will be extracted
The diagnostic assessment module for being transferred to expert diagnosis assessment system with standard volume carries out state estimation.
Dielectric loss measurement system includes variable ratio frequency changer voltage controller power source, measurement module, data memory module, data communication module
And control panel；Variable ratio frequency changer voltage controller power source is produced by internal inverter, and the test voltage after boosted transformer boost is frequently
Rate is adjustable；The standard loop of measurement module is made up of built-in dielectric loss test electric bridge with measuring circuit, be tested loop by test item and
Measurement circuitry is constituted, and measuring circuit is made up of sample resistance, preamplifier and A/D converter；Surveyed respectively by measuring circuit
Standard loop and tested loop current amplitude and its phase difference are obtained, then by digital signal processor with digitlization Real-time Collection side
Method, the capacitance and Dielectric loss tangent value of test item are drawn by vector calculus；Capacitance and Dielectric loss tangent value are direct
Data memory module is stored in, data memory module is temporally suitable by testing result equipped with calendar chip and mass storage
Sequence is preserved, and historical record can be checked at any time, and support printout；Control panel is used for display medium loss measurement system
State.Transmitting capacitance and Dielectric loss tangent value data message to expert diagnosis host computer system by data communication module is carried out
Storage.On the one hand, corresponding capacitance and Dielectric loss tangent value are called by the Database Systems of expert diagnosis host computer system
The control panel of dielectric loss measurement system is fed back to, realizes that the capacitance and Dielectric loss tangent value of optical fiber composite cable are online
Monitoring；On the other hand, real-time characteristic amount extraction is carried out to capacitance and Dielectric loss tangent value by expert diagnosis host computer system,
And with expert diagnosis assessment database standard amount analysis contrast, then the characteristic quantity of extraction and standard volume be transferred to expert diagnosis comment
The diagnostic assessment module for estimating system carries out state estimation.
Elongation at break measuring system includes detection mark module, scan module, image acquisition and processing module, data processing
Module, data communication module and display module；Detection mark module carries out the equidistant mark of circulating type on optical fiber composite cable surface
Note, marks the position of each separation, is designated as optical fiber composite cable Surface testing point；Scan module is used for scanning optical fiber compound electric
The mark point of cable surface attachment, image acquisition and processing module is transferred to by scan module by point sequence；Image acquisition and processing mould
The point sequence that block is transmitted to scan module forms corresponding image by image simulation method, and corresponding coordinate letter is assigned to it
Breath；Data processing module is acquired conversion to each point coordinate information of image, the distance between adjacent spots is carried out to calculate and is divided
Analysis, constructs corresponding database；Database information is transferred to expert diagnosis master by data communication module by data communication module
Machine system, with expert diagnosis host computer system central database comparative analysis, the running status to current optical fiber composite cable is carried out
Diagnostic assessment.
Mechanical stress measuring system include power module, sensor module, wireless transport module, signal acquisition process module,
Data processing module, data communication module and display module；Power module is sensor assembly, signal acquisition process module, number
Powered according to processing module and data communication module；Sensor assembly is provided with pressure sensor, and it is detachable cylindrical shape sensor,
Be laid in the external insulation surface of optical fiber composite cable, and the pressure signal that will be detected is transferred to signal and adopts by wireless transport module
Collection processing module is changed into electric signal, and data processing module is transferred into by A/D, and data are processed, then logical by data
Letter module transfer is stored to expert diagnosis host computer system；Characteristic quantity is carried out to mechanical pressure by expert diagnosis host computer system
Extract, and contrasted with expert diagnosis assessment database standard amount analysis, then the characteristic quantity of extraction and standard volume are transferred to expert
The diagnostic assessment module of diagnostic assessment system carries out state estimation.
Expert diagnosis host computer system includes Database Systems, human-computer interface system and diagnostic assessment system.
Database Systems include data memory module, system algorithm module and communication module；Communication module obtains system
The data of subsystems Database Systems are transferred to by communication module, using data memory module by subsystem (temperature
Signal, framing signal, local discharge signal, dielectric loss signal, elongation at break, mechanical stress) data Cun Chudao correspondence
Database, builds optical fiber composite cable running state data storehouse, life appraisal database and fault type database, for preserving
Relevant parameter that alarm history data, system are performed etc., function is preserved with upper electricity.System algorithm module include data operation,
Alarm and data export section, the method that the module provides acquisition, retrieval, display data and diagnostic analysis from database.
Be stored in database for initial data, warning message by system, and calculate current data by corresponding algorithm joins with history is called
Data are examined, corresponding change curve is drawn, such as current data exceedes default threshold value, and the diagnostic assessment module of system is to optical fiber
The current state of composite cable is made an appraisal, and is delivered to human-computer interface system by status information is evaluated.
Human-computer interface system includes input unit module, display module, storage library module, search module and calling module；
The system is mainly carries out man-machine interaction by expert diagnosis software interface, completes the input and output of data, realizes internal information
With the conversion of external information.Input unit module, for being input into key-strings, and sends display module to, works as search module
After finding target information object, it is used to be input into selection instruction and sends calling module to.Display module, in display
The key-strings that an input area is used to show the input module input are formed on interface of mobile terminal, and for showing
The information object list of the output module output, expert diagnosis software interface has 12 regions, wherein the 1st region is entree
Single module, the 2nd region is optical fiber temperature-measurement and positioning region, and the 3rd region is that dielectric loss monitors region on-line, and the 4th region is office
Portion On-line Discharge monitored area；5th region is elongation at break region, and the 6th region is mechanical stress region, and the 7th region is light
Fine composite cable life diagnosis assessment area, the 8th region is optical fiber composite cable running status region, and the 9th region sets for parameter
Determine region, the 10th region is TCH test channel region, and the 11st region is operation indicating area, and the 12nd region is reserved module region.
Storage library module, for storing information objects.Search module, for the key-strings according to input, from the thesaurus mould
Search out the information object output module of matching in the information object of block storage, for will search for the information object for obtaining export to
Display module.Calling module, the selection instruction for being input into according to the subsystem is selected from the information object list of display
Target information object, and call the target information object.
Diagnostic assessment system includes data processing module, core algorithm module, diagnostic assessment module, Decision-Making Evaluation module.
Data processing module passes through multi task process using the data that Database Systems are collected, and calls the corresponding informance of expert database,
Corresponding core algorithm is selected using core algorithm module, data are carried out with element analysis, multivariate analysis, modeling analysis, diagnosed
Evaluation module is electrically joined by thermodynamic parameter, partial discharge quantity and the dielectric loss angle tangents such as analysis temperature and location information etc.
Amount and elongation at break and mechanical stress the mechanical parameter one-dimensional parameter information expert corresponding with expert database such as change and set
Determine threshold value to be contrasted, tentatively draw the diagnostic result of the running status of optical fiber composite cable, then melt by Decision-Making Evaluation module
Multiple unit parameters are closed, forming multidimensional parameter information carries out Comprehensive Comparison, obtains many reference amounts assessment index, DE light
The running status of fine composite cable and life prediction, final decision result is transferred to the display module of man-machine interactive system,
The residual life and health status of diagnostic assessment optical fiber composite cable are presented on software interface.In addition, the system includes acousto-optic report
Alert system, many reference amounts information that the operation according to optical fiber composite cable is provided, when being diagnosed as, optical fiber composite cable appearance operation is different
Often, system can automatically send the alarm signals such as sound, LED light flicker, word, image.
Optical fiber composite cable expert diagnostic system based on many reference amounts of the invention combine temperature and positioning measurment system,
Shelf depreciation system for measuring quantity, dielectric loss measurement system, elongation at break measuring system, mechanical stress measuring system and expert
Diagnostic software, forms thermodynamic parameter, partial discharge quantity and the dielectric loss angle tangents such as a set of integrated temperature and location information etc.
The expert diagnostic system of electric parameter and the mechanical parameter such as elongation at break and mechanical stress change.This expert diagnostic system
The many reference amounts diagnostic assessment running status of optical fiber composite cable and the new method of residual life are realized, current single ginseng is overcome
The deficiency of diagnostic assessment optical fiber composite cable running status is measured, the new peak of optical fiber composite cable life appraisal diagnostic field is breached
Degree, with scientific research higher and engineering application value.
Brief description of the drawings
Fig. 1 is temperature of the invention and positioning measurment system module design diagram.
Fig. 2 is shelf depreciation system for measuring quantity module design diagram of the invention.
Fig. 3 is dielectric loss measurement system module design schematic diagram of the invention.
Fig. 4 is elongation at break measuring system module design diagram of the invention.
Fig. 5 is mechanical stress measuring system module design diagram of the invention.
Fig. 6 is expert diagnosis host computer system module design diagram of the invention.
Fig. 7 is many reference amounts optical fiber composite cable expert diagnostic system schematic diagram of the invention.
Specific embodiment
The present invention is further improved and illustrated below according to Figure of description.
Temperature as shown in Figure 1 and positioning measurment system, the system are used at modularized design and high speed weak signal
Reason technology, highest can realize temperature measurement accuracy ± 1 DEG C, the accurate ± 1m of position error, by temperature curve and positional information in expert
Shown on diagnosis host system software, can clearly obtain the letter such as high point, low spot, positional information of optical fiber composite cable temperature
Breath.System board includes governor circuit and part of data acquisition, using MCU+FPGA frameworks.FPGA control datas are gathered, MCU controls
Peripheral hardware initialization processed.MCU reads the data of FPGA, and data are uploaded in host computer.Mainboard is by the communication mould with host computer
Block, computer heating control part, TEC temprature control units, APD biased sections, EDFA communication interfaces, FPGA controls ADC gathered datas,
Conditioning plate interface, laser driving interface, photoswitch interface, low noise clock generating circuit, power distribution part, Flash electricity
The functional modules such as road, panel interface and liquid crystal board interface circuit are constituted.
Shelf depreciation system for measuring quantity as shown in Figure 2, the system uses high frequency and superfrequency detection technique, multiple to optical fiber
The local discharge signal for closing cable is acquired and feature extraction, and the data transfer of extraction is carried out to expert diagnosis host computer system
Forecast assessment.
Dielectric loss measurement system as shown in Figure 3, the system carries out Fourier frequently to the voltage current waveform for collecting
Analysis of spectrum, filtering harmonics and error compensation, extract revised data transfer and are predicted assessment to expert diagnosis host computer system.
Elongation at break measuring system as shown in Figure 4, the system obtains optical fiber and is combined by using NI Vision Builder for Automated Inspection
The distance between the strain image sequence that the test point of cable surface spraying is formed, two neighboring separation are designated as m, measure respectively
The distance between two neighboring separation, is designated as m1, according to the local elongation rate between two neighboring separation, and selects as needed
Determine and mark the local elongation rate respectively more than the point of preset value, the local elongation of measurement is more than between the critical point of preset value
Distance, be designated as Lp, the initial range between the critical point is designated as L0, and according to formula Ap=((Lp-L0)/L0) ×
100%, elongation at break Ap is calculated, the data transfer after calculating is predicted assessment to expert diagnosis host computer system.
Mechanical stress measuring system as shown in Figure 5, the system by optical fiber composite cable surface additional layer film,
Pressure sensor is placed between film and optical fiber composite cable surface, obtaining optical fiber composite cable using pressure capsule system exists
The mechanical stress that the environment such as surface is undergone in running falling rocks, coal breakage are caused to optical fiber composite cable, during by transmitting
Between determine that optical fiber composite cable is subjected to the accurate location information of mechanical stress, calculate optical fiber composite cable with pressure sensing formula
Mechanical stress, the data transfer after calculating is predicted assessment to expert diagnosis host computer system.
Many reference amounts optical fiber composite cable expert diagnostic system as shown in Figure 7, expert diagnosis host computer system (such as Fig. 6) is used
Orthogonal experiment method and analytic hierarchy process (AHP) are to thermodynamic parameter, partial discharge quantity and dielectric loss angle tangents such as temperature and location informations
Carry out mathematical analysis Deng mechanical parameters such as electric parameter and elongation at break and mechanical stress changes, obtain primary and secondary want parameter and
The assessment weight of each parameter, many reference amounts fitting is carried out with multiple regression analysis method, obtains the Fitted parameter of assessment diagnosis ---
Life index, the comprehensively accurately residual life and health status of diagnostic assessment optical fiber composite cable.Host computer and expert diagnosis
Host computer system is connected, and temperature is connected with positioning measurment system with expert diagnosis host computer system, shelf depreciation system for measuring quantity,
Dielectric loss measurement system is connected with expert diagnosis host computer system, elongation at break measuring system, mechanical stress measuring system
It is connected with expert diagnosis host computer system, realizes the connection unification of each single parameter test system.
Claims (1)
1. a kind of optical fiber composite cable expert diagnostic system based on many reference amounts, it is characterised in that optical fiber composite cable expert
Diagnostic system includes temperature and positioning measurment system, shelf depreciation system for measuring quantity, dielectric loss measurement system, elongation at break
Measuring system, mechanical stress measuring system, expert diagnosis host computer system and host computer；
Temperature and positioning measurment system optical fiber temperature measurement host and acoustooptic alarm system；
Optical fiber temperature measurement host includes power module, mainboard, liquid crystal control module, communication module, light path design road module and circuit
Design module；Power module is liquid crystal control module and main board power supply；Mainboard control liquid crystal control module, communication module and signal
Processing module, realizes that mainboard is configured with the connection of each module；Communication module realizes the data communication of optical fiber temperature measurement host；
Light path design module is made up of light emission module and optical modulator module；Light emission module includes that laser module and optical fiber are put
Big device module；Optical modulator module includes fiber coupler and optical filter, and fiber coupler includes Raman scattering module, light electrical resistivity survey
Survey module and sensing optic cable module；Laser module sends pulsed optical signals, and pulse luminous energy is lifted via fibre-optical amplifier module
Amount, the pulsed light after lifting is directly transferred in optical fiber composite cable embedded with temperature-sensing optical fiber through Raman scattering module, in optical fiber
Propagated in composite cable, while constantly there is rear orientation light, return to Raman scattering module, via two-way optical filter, sieved respectively
The stokes light and anti-Stokes light in rear orientation light are selected, is directly entered in the photoelectric conversion module of circuit module；
Circuit design module includes acquisition processing module and photoelectric conversion module；Acquisition processing module include terminal management system,
Processing unit and Acquisition Circuit；Photoelectric conversion module includes photodetector and two-way amplifier；Photoelectric conversion module is to receiving
To light path module in optical filter selection stokes light and anti-Stokes light, signal is put via two-way amplifier
It is big and realize opto-electronic conversion, electric signal is converted light signals into, it is directly entered acquisition processing module；The terminal of acquisition processing module
Management system, processing unit and Acquisition Circuit are integrated in mainboard, and mainboard uses MCU+FPGA frameworks；FPGA controls Acquisition Circuit,
MCU control peripheral hardware initialization；The data of FPGA collections are communicated with the CPU of terminal management system, then by LAN network interfaces number
According to storage is transmitted to expert diagnosis host computer system, data fortune is carried out in the center of the centralized monitor module of expert diagnosis host computer system
Calculate, and result is included in host computer；
Acoustooptic alarm system includes temperature control circuit module and communication circuit module, and temperature control circuit module is two-way, provides permanent respectively
Temperature gives laser module and photodetector；When temperature control circuit module measurement temperature exceedes the upper of optical fiber composite cable temperature sensing optical fiber
During limit value, communication circuit module control acoustooptic alarm system sends alarm signal automatically；
Shelf depreciation system for measuring quantity include power module, sensor assembly, wireless transport module, signal acquisition process module,
Data processing module, data communication module and display module；Power module is sensor assembly, signal acquisition process module, number
Powered according to processing module and data communication module；Sensor assembly is provided with high frequency sensors and extra-high video sensor, and it is into cylinder
Shape is laid in the external insulation surface of optical fiber composite cable, and the discharge signal that will be detected is transferred to signal by wireless transport module
Acquisition processing module, is changed by A/D and is directly entered data processing module, carries out Multilevel method to discharge signal data, then lead to
Data communication module transmission discharge signal data message to expert diagnosis host computer system is crossed to be stored；
Dielectric loss measurement system includes variable ratio frequency changer voltage controller power source, measurement module, data memory module, data communication module and control
Panel processed；Variable ratio frequency changer voltage controller power source is produced by internal inverter, and the test voltage frequency after boosted transformer boost can
Adjust；The standard loop of measurement module is made up of built-in dielectric loss test electric bridge with measuring circuit, is tested loop by test item and measurement
Circuit is constituted, and measuring circuit is made up of sample resistance, preamplifier and A/D converter；Measure mark respectively by measuring circuit
Quasi loop and tested loop current amplitude and its phase difference, then by digital signal processor with digitlization real-time collecting method,
The capacitance and Dielectric loss tangent value of test item are drawn by vector calculus；Capacitance and Dielectric loss tangent value are directly stored in
Data memory module, data memory module protects testing result equipped with calendar chip and mass storage in chronological order
Deposit, historical record can be checked at any time, and support printout；Control panel is used for the shape of display medium loss measurement system
State；Capacitance is transmitted by data communication module and Dielectric loss tangent value data message to expert diagnosis host computer system is deposited
Storage；
Elongation at break measuring system includes detection mark module, scan module, image acquisition and processing module, data processing mould
Block, data communication module and display module；Detection mark module carries out the equidistant mark of circulating type on optical fiber composite cable surface,
The position of each separation is marked, optical fiber composite cable Surface testing point is designated as；Scan module is used for scanning optical fiber composite cable
The mark point of surface attachment, image acquisition and processing module is transferred to by scan module by point sequence；Image acquisition and processing module
Point sequence to scan module transmission forms corresponding image by image simulation method, and corresponding coordinate letter is assigned to it
Breath；Data processing module is acquired conversion to each point coordinate information of image, the distance between adjacent spots is carried out to calculate and is divided
Analysis, constructs corresponding database；Database information is transferred to expert diagnosis master by data communication module by data communication module
Machine system, with expert diagnosis host computer system central database comparative analysis, the running status to current optical fiber composite cable is carried out
Diagnostic assessment；
Mechanical stress measuring system includes power module, sensor module, wireless transport module, signal acquisition process module, data
Processing module, data communication module and display module；Power module is sensor assembly, signal acquisition process module, at data
Reason module and data communication module are powered；Sensor assembly is provided with pressure sensor, and it is detachable cylindrical shape sensor, is laid
On the external insulation surface of optical fiber composite cable, the pressure signal that will be detected is transferred at signal acquisition by wireless transport module
Reason module is changed into electric signal, and data processing module is transferred into by A/D, and data are processed, then by data communication mould
Block is transferred to expert diagnosis host computer system and is stored；Characteristic quantity is carried out by expert diagnosis host computer system to mechanical pressure to carry
Take, and contrasted with expert diagnosis assessment database standard amount analysis, then the characteristic quantity of extraction and standard volume are transferred to expert and examine
The diagnostic assessment module of disconnected assessment system carries out state estimation；
Expert diagnosis host computer system includes Database Systems, human-computer interface system and diagnostic assessment system；
Database Systems include data memory module, system algorithm module and communication module；Communication module by system obtain it is each
The data of individual subsystem are transferred to Database Systems by communication module, using data memory module by the data storage of subsystem
To correspondence database, optical fiber composite cable running state data storehouse, life appraisal database and fault type database are built, used
In relevant parameter that alarm history data, system are performed etc. is preserved, function is preserved with upper electricity；System algorithm module includes data
Computing, alarm and data export section, the module provide acquisition, retrieval, display data and diagnostic analysis from database
Method；
Human-computer interface system includes input unit module, display module, storage library module, search module and calling module；This is
System carries out man-machine interaction, completes the input and output of data, realizes the conversion of internal information and external information；
Diagnostic assessment system includes data processing module, core algorithm module, diagnostic assessment module, Decision-Making Evaluation module.
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