CN107131843A - A kind of colliery cage guide damage deformation on-line monitoring system and method based on optical fiber grating sensing - Google Patents
A kind of colliery cage guide damage deformation on-line monitoring system and method based on optical fiber grating sensing Download PDFInfo
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- CN107131843A CN107131843A CN201710561836.2A CN201710561836A CN107131843A CN 107131843 A CN107131843 A CN 107131843A CN 201710561836 A CN201710561836 A CN 201710561836A CN 107131843 A CN107131843 A CN 107131843A
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
A kind of colliery cage guide damage deformation on-line monitoring system and method based on optical fiber grating sensing, belong to colliery heavy mechanical equipment damage deformation monitoring, positioning, maintenance and care field.3~5 survey stations are set on cage guide, fixed sensing bellows in survey station, each survey station is connected into path using cable junction box, terminal box, (FBG) demodulator, monitoring computer are connected to the system for constituting complete set, realize that cage guide damages deformation monitoring using fiber grating displacement sensor, fiber Bragg grating strain sensor, optical fibre grating acceleration sensor, fiber-optical grating temperature sensor.Its essential safety, electromagnetism interference, measurement accuracy height, simple system, integrated level are high, remote, comprehensive, on-line measurement can be achieved, cage guide damage deformation on-line monitoring and abnormity early warning can not only be realized, intelligent monitoring can also be realized, greatly facilitate reduction fault rate, the trend that safety of coal mines is efficiently produced has been adapted to, certain social benefit can be produced.
Description
Technical field
The present invention relates to a kind of monitoring system and method, be particularly suitable for use in colliery heavy mechanical equipment damage deformation monitoring
Colliery cage guide damage deformation on-line monitoring system and method based on optical fiber grating sensing.
Background technology
In recent years, various coal mining accidents happen occasionally, and cause serious economic loss and casualties, although tank
The accident that road deformation is caused is rarely reported, but its fault rate remains high always, it is often necessary to which full-time staff is checked and tieed up
Repair, the key factor and great potential safety hazard normally produced as restriction colliery.At the same time, in order to adapt to modern society pair
The demand of the energy, colliery is more automated, efficient, greenization, safe, coal mine safety monitoring is increasingly by the weight of people
Depending on, and as the guide rail of cage, cage guide can ensure that cage traffic direction is correct, it is to avoid laterally pendulum is produced in lifting process
It is dynamic, therefore the important component equipped as shaft of vertical well.
This problem is deformed for cage guide damage, government department and related scientific research personnel remain highest attention.Pass through
Investigation and research, find the characteristics of cage guide destroyed has common, in most cases, due to cage unbalance loading, big part thing
The reasons such as body collision, earth's crust change, cage guide inevitably sustains damage, and specific damage type can be divided into cage guide and incline
Tiltedly, bending, the joint changing of the relative positions, loosen and wear and tear, wherein cage guide tilt and bend it is more universal, on the influence of the normal hoisting of vertical compared with
Greatly, easily cause a serious accident.Therefore, take effective monitoring means, the damage of cage guide deformation is monitored, evaluate and with
Track, it appears particularly important.
At present, deformation monitoring is damaged for cage guide, research both domestic and external is not also that very fully its main monitoring method has
Geometry telemetry, special instrument method, vibration acceleration method etc., wherein geometry telemetry are respectively to take four on well head, shaft bottom beam leg
Point, makes diagonal intersection point be overlapped with pit shaft design centre.Four steel wires are transferred as fixed datum, top is fixed on well head,
Bottom is fixed in the corresponding points of shaft bottom.Along shaft section steel wire hanging down away from simultaneously to cage guide front is measured every some groups of beams
Certain section of pit shaft is chosen, diagonal is measured and surveys the angle of cage guide positive direction, synthesis, which surveys data, can differentiate cage guide
Deformation extent.Such a method applies more at the scene, but it is mainly manually measured, it is impossible to realize real time on-line monitoring,
And precision is not high, waste time and energy；Special instrument method mainly uses the conventional instrument pair such as bottom profiler or cage guide inclinometer
Cage guide spacing and deflection are continuously monitored.Although such a method precision increases, and can realize system monitoring,
Monitoring instrument is mainly using electric-type sensing, and poor to subsurface environment adaptability, antijamming capability is weaker, and reliability is relatively low, and
Signal transmission distance is short, it is impossible to realize a wide range of long-term on-line real time monitoring；Vibration acceleration method mainly shakes hoisting container
Changes of dynamic acceleration and its speed be turned to differentiation cage whether the basic norm of safe operation, and tentatively establish typical fault
With the relation of signal characteristic, and then indirectly reflect cage guide safe condition.Such a method is obtained in terms of system operation stationarity
Greatly improve, can test, analyze the depth of parallelism and running stability of cage guide, but can not definitely provide the vertical case of cage guide,
And can only reflect the state of cage guide indirectly, in addition, sensor is fixed on above lifting device, it is necessary to using being wirelessly transferred,
The complexity and cost of system are increased, and signal is easily affected, and transmits unstable.
The content of the invention
Technical problem：For above-mentioned technology weak point there is provided a kind of method is easy, essential safety, all -fiber transmission,
Can real-time online realize the online prison of colliery cage guide damage deformation based on optical fiber grating sensing of colliery cage guide damage deformation monitoring
Examining system and method.
Technical scheme：To realize above-mentioned technical purpose, the colliery cage guide damage of the invention based on optical fiber grating sensing becomes
Shape on-line monitoring system, including the static (FBG) demodulator of monitoring computer, fiber grating, mining transmission cable, cable junction box, sensing
Bellows, plurality of sensing bellows is disposed on cage guide both sides, and all sensing bellows are connected with cable junction box respectively, light
Cable terminal box is connected to by mining transmission cable to be arranged on the static (FBG) demodulator of the fiber grating on ground, fiber grating steady-state solution
Instrument is adjusted to be connected with monitoring computer；
Wherein fiber grating displacement sensor group, fiber Bragg grating strain sensor group, fiber grating are provided with sensing bellows
Acceleration transducer group, horizontal fiber-optical grating temperature sensor and optical splitter.
Described fiber grating displacement sensor group includes；Radial direction fiber grating displacement sensor and horizontal fiber grating position
Displacement sensor；The fiber Bragg grating strain sensor group includes radial direction fiber Bragg grating strain sensor, horizontal fiber grating strain
Sensor and vertical fiber Bragg grating strain sensor；Optical fibre grating acceleration sensor group is passed including radial direction optical fibre grating acceleration
Sensor, horizontal optical fibre grating acceleration sensor and vertical optical fibre grating acceleration sensor.
The sensing bellows is fixed on default monitoring survey station relevant position using welding or by the way of pasting, and monitoring survey station is set
Put in cage guide and to be spaced arrangement away from cage side, spacing distance is 100~150 meters.
Fiber grating displacement sensor group, fiber Bragg grating strain sensor group in the sensing bellows, fiber grating add
Linked together between velocity sensor group and horizontal fiber-optical grating temperature sensor by the way of serial or parallel connection, Suo Youchuan
The output end tail optical fiber of sensor is connected with optical splitter, is connected to each optical splitter by optical cable and is fixed on the borehole wall or cage guide
Cable junction box, terminal box connected by the static (FBG) demodulator of optical cable and fiber grating, and computer and demodulation will be monitored with netting twine
Instrument links together, so as to form colliery cage guide damage DEFORMATION MONITORING SYSTEM, realizes the monitoring that cage guide is tilted and bent.
Using the monitoring method of the above-mentioned colliery cage guide damage deformation on-line monitoring system based on optical fiber grating sensing, including
Following steps：
A, 3~5 monitoring survey stations are selected out every 100~150 meters on surface of the colliery cage guide away from cage side, adopted
It will sense bellows with welding or the mode pasted and be fixed on monitoring survey station relevant position；
B, using welding or paste by the way of by fiber grating displacement sensor group, fiber Bragg grating strain sensor, group light
Fine grating acceleration transducer group, horizontal fiber-optical grating temperature sensor and optical splitter are fixed on above sensing bellows；
C, fiber grating displacement sensor group, fiber Bragg grating strain sensor group, optical fibre grating acceleration sensor group, horizontal stroke
To being attached between fiber-optical grating temperature sensor by the way of serial or parallel connection, all the sensors are exported into single tail optical fiber and connected
It is connected to above optical splitter and forms path；
D, it is connected by transmission cable with cable junction box from optical splitter output end, cable junction box passes through mining transmission
Optical cable is connected with the static (FBG) demodulator of fiber grating, and fiber grating static state (FBG) demodulator is connected with monitoring computer using netting twine, from
And constitute a set of sensing network；
E, fiber grating displacement sensor group monitor the position offset laterally and radially of cage guide, and fiber grating strain is passed
Sensor group monitors the three-dimensional dependent variable of cage guide, and fiber-optical grating temperature sensor realizes temperature-compensating, optical fibre grating acceleration sensing
Device group monitors the three-dimensional vibrating deflection of cage guide, and can monitor cage guide according to the data measured tilts and bending status；
F, the data for being gathered each sensor are transmitted to the static (FBG) demodulator of fiber grating eventually through mining transmission cable,
Lightwave signal is demodulated into by data signal by the static (FBG) demodulator of fiber grating, it is most red to transmit to monitoring computer, by installing
Data processing is carried out in monitoring computer, the three-dimensional cloud atlas of cage guide working condition is obtained, exceedes preset alarm when there is any parameter
During threshold value, then alarm is sent, so as to realize that cage guide damages deformation monitoring.
LAN is also associated with the monitoring computer and wireless network carries out data sharing, while allowing a human hand
The formula terminal of carrying realizes that wireless data shows and monitored.
Beneficial effect：As a result of such scheme, the present invention has advantages below：
Mainly manually measure and can not realize instant invention overcomes what existing colliery cage guide technology for deformation monitoring was present
The deficiency of abnormity early warning, constructs a set of cage guide damage DEFORMATION MONITORING SYSTEM based on optical fiber grating sensing, has built cage guide work
Make state sensing network, it is built-in to be integrated with intelligent analysis processing software, it is possible to achieve cage guide is tilted and bending real-time online prison
Survey, realize early warning and positioning to abnormal, significantly reduce the amount of labour, reduce maintenance cost；
Instant invention overcomes the deficiency for sensing easily by electromagnetic interference and existing potential safety hazard using electric-type in the prior art, fill
Point make use of fiber grating electromagnetism interference, measurement accuracy it is high, it is good to small quantity sensitiveness the characteristics of, and fiber grating is not only
Non-active operation can be realized, essential safety can also realize that perception and transmission are integrated, long transmission distance, and stability is also than passing
The electric-type of system is sensed；
Instant invention overcomes cage guide displacement, the deficiency for straining, vibrating single parameter is simply measured in the prior art, using light
Fine grating displacement sensor monitors cage guide laterally and radially position offset (change of vertical displacement amount does not consider compared with I), uses
Fiber Bragg grating strain sensor monitors cage guide three-dimensional dependent variable, and cage guide three-dimensional vibrating is monitored using optical fibre grating acceleration sensor
Deflection, temperature-compensating is carried out using fiber-optical grating temperature sensor, and comprehensive monitoring is realized to cage guide damage deformation；
Instant invention overcomes sensor can only be fixed on above lifting device in existing cage guide deformation monitoring, then adopt
With being wirelessly transferred, the drawbacks of adding whole measurement process complexity and cost, by designing a kind of sensing bellows, is fixed
On surface of the cage guide away from cage side, it can directly reflect the inclination, bending and vertical case of cage guide, simple system, operation
Stationarity is protected.In addition, sense film box small volume, simple in construction, it is easy to make and installs.
Brief description of the drawings
Fig. 1 is monitoring system structure chart of the invention.
Fig. 2 is present invention sensing bellows structural representation.
In figure, 1- monitoring computers；2- fiber gratings static state (FBG) demodulator；3- is mining transmission cable；4- cable junction box；5-
Sense bellows；6-x- radial direction fiber grating displacement sensors；6-y- transverse direction fiber grating displacement sensors；7-x- radial direction optical fiber light
Grid strain transducer；7-y- transverse direction fiber Bragg grating strain sensors；The vertical fiber Bragg grating strain sensors of 7-z-；8-x- radial lights
Fine grating acceleration transducer；8-y- transverse direction optical fibre grating acceleration sensors；The vertical optical fibre grating acceleration sensors of 8-z-；
9- transverse direction fiber-optical grating temperature sensors；10- optical splitters；11- cage guides；12- cages.
Embodiment
One embodiment of the present of invention is further described below in conjunction with the accompanying drawings：
As shown in figure 1, the colliery cage guide damage deformation on-line monitoring system based on optical fiber grating sensing of the present invention, including
Including monitoring computer 1, the static (FBG) demodulator 2 of fiber grating, mining transmission cable 3, cable junction box 4, sensing bellows 5, wherein
Multiple sensing bellows 5 are disposed on the both sides of cage guide 11, and all sensing bellows 5 are connected with cable junction box 4 respectively, and optical cable connects
Line box 4 is connected to by mining transmission cable 3 to be arranged on the static (FBG) demodulator 2 of the fiber grating on ground, fiber grating steady-state solution
Instrument 2 is adjusted to be connected with monitoring computer 1；
Wherein fiber grating displacement sensor group, fiber Bragg grating strain sensor group, fiber grating are provided with sensing bellows 5
Acceleration transducer group, horizontal fiber-optical grating temperature sensor 9 and optical splitter 10, described fiber grating displacement sensor group bag
Include；Radial direction fiber grating displacement sensor 6-x and horizontal fiber grating displacement sensor 6-y；The fiber grating strain sensor
Device group includes radial direction fiber Bragg grating strain sensor 7-x, transverse direction fiber Bragg grating strain sensor 7-y and vertical fiber grating strain
Sensor 7-z；Optical fibre grating acceleration sensor group includes radial direction optical fibre grating acceleration sensor 8-x, horizontal fiber grating
Acceleration transducer 8-y and vertical optical fibre grating acceleration sensor 8-z.
The sensing bellows 5 is fixed on default monitoring survey station relevant position using welding or by the way of pasting, and monitors survey station
It is arranged on cage guide 11 and is spaced arrangement away from the side of cage 12, spacing distance is 100~150 meters.
Fiber grating displacement sensor group, fiber Bragg grating strain sensor group in the sensing bellows 5, fiber grating add
Linked together, owned by the way of serial or parallel connection between velocity sensor group and horizontal fiber-optical grating temperature sensor 9
The output end tail optical fiber of sensor is connected with optical splitter 10, each optical splitter 10 is connected to by optical cable be fixed on the borehole wall or
Cable junction box 4 on cage guide, terminal box 4 is connected by optical cable and the static (FBG) demodulator 2 of fiber grating, will be monitored and calculated with netting twine
Machine 2 and (FBG) demodulator 1 link together, so as to form colliery cage guide damage DEFORMATION MONITORING SYSTEM, realize what cage guide was tilted and bent
Monitoring.
A kind of monitoring method of the colliery cage guide damage deformation on-Line Monitor Device based on optical fiber grating sensing, its step is such as
Under：
A, 3~5 monitoring surveys are selected out every 100~150 meters on surface of the colliery cage guide 11 away from the side of cage 12
Stand, sensing bellows 5 is fixed on monitoring survey station relevant position using welding or by the way of pasting；
B, using welding or paste by the way of by fiber grating displacement sensor group, fiber Bragg grating strain sensor, group light
Fine grating acceleration transducer group, horizontal fiber-optical grating temperature sensor 9 and optical splitter 10 are fixed on above sensing bellows；
C, fiber grating displacement sensor group, fiber Bragg grating strain sensor group, optical fibre grating acceleration sensor group, horizontal stroke
To being attached between fiber-optical grating temperature sensor 9 by the way of serial or parallel connection, all the sensors are exported into single tail optical fiber
It is connected to optical splitter 10 and forms path above；
D, it is connected by transmission cable with cable junction box 4 from the output end of optical splitter 10, cable junction box 4 is by mining
Transmission cable 3 is connected with the static (FBG) demodulator 2 of fiber grating, and fiber grating static state (FBG) demodulator 2 uses netting twine with monitoring computer 1
Connection, so as to constitute a set of sensing network；
E, fiber grating displacement sensor group monitor the position offset laterally and radially of cage guide 11, fiber grating strain
Sensor group monitors the three-dimensional dependent variable of cage guide 11, and fiber-optical grating temperature sensor realizes temperature-compensating, optical fibre grating acceleration
Sensor group monitors the three-dimensional vibrating deflection of cage guide 11, can monitor cage guide 11 according to the data measured and tilt and bending
Condition；
F, the data for being gathered each sensor are transmitted to the static (FBG) demodulator of fiber grating eventually through mining transmission cable 3
2, lightwave signal is demodulated into by data signal by the static (FBG) demodulator 2 of fiber grating, it is most red to transmit to monitoring computer 1, pass through
Data processing is carried out installed in monitoring computer 1, the three-dimensional cloud atlas of the working condition of cage guide 11 is obtained, it is pre- when there is any parameter to exceed
If during alarm threshold value, then sending alarm, so as to realize that cage guide 11 damages deformation monitoring.
LAN is also associated with the monitoring computer 1 and wireless network carries out data sharing, while allowing personal
Hand-held terminal realizes that wireless data shows and monitored.The static built-in services device of (FBG) demodulator 2 of described fiber grating, it is possible to achieve
The demodulation of the signals such as displacement, strain, acceleration, temperature, can also transfer signals to monitoring computer, can also pass through mobile phone
The situation of change of each signal of app on-line monitorings, realizes intelligent monitoring；
Interpretation software is based on linux system, using man-machine interactive interface, both can Dynamic Announce whole system each
The working condition of hardware, can also realize that three-dimensional cloud atlas is shown to the situation of change of each monitoring parameter, each parameter is set
Threshold value, is distinguished with three kinds of colors of red, yellow, and green and shows its alert status, abnormality and normal operating conditions.
It is according to the wavelength expression formula of theory of the fiber optical：
λB=2neffΛ
In formula：neffThe effective refractive index of fibre core during for spread fiber, Λ is the cycle of grating.
Under uniform axial stress, optic fiber grating wavelength change is with the relational expression strained：
In formula：peFor sensitivity coefficient, ε strains for optical fiber axial direction.
Acceleration is with strain stress relation in elastic system：
Therefore, the relation of optic fiber grating wavelength knots modification and acceleration is：
It is possible thereby to realize the measurement of vibration by the changed wavelength of optical fibre grating acceleration sensor group.
System and method overcome the deficiency of existing method, and essential safety, electromagnetism interference, measurement accuracy are high, can not only
Real time on-line monitoring is enough realized, abnormity early warning is realized, additionally it is possible to intelligent monitoring is realized, reduction fault rate is greatly facilitated, adapted to
The trend that safety of coal mines is efficiently produced, can produce certain social benefit.
Claims (6)
1. a kind of colliery cage guide damage deformation on-line monitoring system based on optical fiber grating sensing, it is characterised in that：It includes prison
Control computer（1）, the static (FBG) demodulator of fiber grating（2）, mining transmission cable（3）, cable junction box（4）, sensing bellows（5）,
Plurality of sensing bellows（5）It is disposed on cage guide（11）Both sides, all sensing bellows（5）Respectively with cable junction box（4）
It is connected, cable junction box（4）Pass through mining transmission cable（3）It is connected to the static (FBG) demodulator of fiber grating for being arranged on ground
（2）On, fiber grating static state (FBG) demodulator（2）With monitoring computer（1）It is connected；
Wherein sense bellows（5）It is interior to add provided with fiber grating displacement sensor group, fiber Bragg grating strain sensor group, fiber grating
Velocity sensor group, horizontal fiber-optical grating temperature sensor（9）And optical splitter（10）.
2. the colliery cage guide damage deformation on-line monitoring system according to claim 1 based on optical fiber grating sensing, it is special
Levy and be：Described fiber grating displacement sensor group includes；Radial direction fiber grating displacement sensor（6-x）With horizontal optical fiber light
Displacement transducer（6-y）；The fiber Bragg grating strain sensor group includes radial direction fiber Bragg grating strain sensor（7-x）, it is horizontal
To fiber Bragg grating strain sensor（7-y）With vertical fiber Bragg grating strain sensor（7-z）；Optical fibre grating acceleration sensor group
Including radial direction optical fibre grating acceleration sensor（8-x）, horizontal optical fibre grating acceleration sensor（8-y）With vertical fiber grating
Acceleration transducer（8-z）.
3. the colliery cage guide damage deformation on-line monitoring system according to claim 1 based on optical fiber grating sensing, it is special
Levy and be：The sensing bellows（5）Default monitoring survey station relevant position is fixed on using welding or by the way of pasting, survey station is monitored
It is arranged on cage guide（11）Away from cage（12）Side is spaced arrangement, and spacing distance is 100 ~ 150 meters.
4. the colliery cage guide damage deformation on-line monitoring system according to claim 1 based on optical fiber grating sensing, it is special
Levy and be：The sensing bellows（5）In fiber grating displacement sensor group, fiber Bragg grating strain sensor group, fiber grating
Acceleration transducer group and horizontal fiber-optical grating temperature sensor（9）Between linked together by the way of serial or parallel connection,
The output end tail optical fiber and optical splitter of all the sensors（10）It is connected, by optical cable by each optical splitter（10）It is connected to and is fixed on
Cable junction box on the borehole wall or cage guide（4）, terminal box（4）Pass through optical cable and the static (FBG) demodulator of fiber grating（2）Connection, is used
Netting twine will monitor computer（2）And (FBG) demodulator（1）Link together, so that colliery cage guide damage DEFORMATION MONITORING SYSTEM is formed, it is real
The monitoring that existing cage guide is tilted and bent.
5. the prison of the colliery cage guide damage deformation on-line monitoring system based on optical fiber grating sensing described in a kind of usage right requirement 1
Survey method, it is characterised in that comprise the following steps：
A, in colliery cage guide（11）Away from cage（12）3 ~ 5 monitoring survey stations are selected out on the surface of side every 100 ~ 150 meters,
It will sense bellows using welding or by the way of pasting（5）It is fixed on monitoring survey station relevant position；
B, using welding or paste by the way of by fiber grating displacement sensor group, fiber Bragg grating strain sensor, group optical fiber light
Grid acceleration transducer group, horizontal fiber-optical grating temperature sensor（9）And optical splitter（10）It is fixed on above sensing bellows；
C, fiber grating displacement sensor group, fiber Bragg grating strain sensor group, optical fibre grating acceleration sensor group, lateral light
Fine grating temperature sensor（9）Between be attached by the way of serial or parallel connection, all the sensors are exported into single tail optical fiber connects
It is connected to optical splitter（10）Path is formed above；
D, from optical splitter（10）Output end passes through transmission cable and cable junction box（4）It is connected, cable junction box（4）Pass through ore deposit
Use transmission cable（3）With the static (FBG) demodulator of fiber grating（2）It is connected, fiber grating static state (FBG) demodulator（2）With monitoring computer
（1）Connected using netting twine, so as to constitute a set of sensing network；
E, fiber grating displacement sensor group monitoring cage guide（11）Position offset laterally and radially, fiber grating strain pass
Sensor group monitors cage guide（11）Three-dimensional dependent variable, fiber-optical grating temperature sensor realizes temperature-compensating, optical fibre grating acceleration
Sensor group monitors cage guide（11）Three-dimensional vibrating deflection, can monitor cage guide according to the data measured（11）Tilt and bend
Situation；
F, the data for being gathered each sensor are eventually through mining transmission cable（3）Transmit to the static (FBG) demodulator of fiber grating
（2）, pass through the static (FBG) demodulator of fiber grating（2）Lightwave signal is demodulated into data signal, it is most red to transmit to monitoring computer
（1）, by installed in monitoring computer（1）Data processing is carried out, cage guide is obtained（11）The three-dimensional cloud atlas of working condition, appoints when having
When what parameter exceedes preset alarm threshold value, then alarm is sent, so as to realize cage guide（11）Damage deformation monitoring.
6. detection method according to claim 5, it is characterised in that：The monitoring computer（1）On be also associated with local
Network and wireless network carry out data sharing, while allowing personal hand-held terminal to realize that wireless data shows and monitored.
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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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