CN208059805U - A kind of civil engineering fiber grating expansion joint test system - Google Patents
A kind of civil engineering fiber grating expansion joint test system Download PDFInfo
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- CN208059805U CN208059805U CN201820200098.9U CN201820200098U CN208059805U CN 208059805 U CN208059805 U CN 208059805U CN 201820200098 U CN201820200098 U CN 201820200098U CN 208059805 U CN208059805 U CN 208059805U
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- demodulator
- displacement sensor
- bragg grating
- blocking cylinder
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Abstract
The utility model discloses a kind of civil engineering fiber grating expansion joints to test system; including fiber Bragg grating (FBG) demodulator, displacement sensor, metal probe and control centre; fiber Bragg grating (FBG) demodulator is connected by transmission cable with displacement sensor; displacement sensor surface is provided with insulation blocking cylinder; insulation blocking cylinder upper surface is equipped with fixing piece; fixing piece both sides are both provided with mounting hole; insulation blocking cylinder is internally provided with telescopic rod; telescopic rod side end is equipped with metal probe, and fiber Bragg grating (FBG) demodulator front end face is equipped with USB interface；The networking that the utility model passes through the displacement flowmeter sensor, transmission cable and fiber Bragg grating (FBG) demodulator of the high precision and large measuring range of setting, realize the real-time acquisition of expansion joint size, under the premise of ensureing the measuring accuracy of sensing testing system, it can solve the problems, such as networking, displacement sensor also has the characteristics that essential burn-proof and explosion prevention, the interference of anti-forceful electric power, anti-lightning, reliability are high, totally improves work efficiency.
Description
Technical field
The utility model is related to fiber-optic grating sensor comprehensive application technology and expansion joint field of measuring technique, espespecially a kind of
Civil engineering tests system with fiber grating expansion joint.
Background technology
With the fast development of China's civil construction and related industries, base in civil engineering and under track structure and line
The interface of waterproof layer also reserves expansion joint between plinth, line, and the work of waterproof sealing is played while coordinating concrete dilatation
With the displacement sensor for measuring expansion joint existing at present is a kind of important, extensive sensor in application scenario, traditional position
Displacement sensor mainly have shake string formula, inductance type and condenser type it is several but such as inflammable and explosive, strong electromagnetic in some adverse circumstances
Interference etc. or some need the occasion of remote monitoring, these are difficult to use by the temperature sensor of transducing signal of electricity,
Displacement meter traditional simultaneously is unable to networking, not anti-lightning.
Utility model content
The technical problems to be solved in the utility model is that provide a kind of detection performance preferable the shortcomings that overcoming the prior art,
The high civil engineering of practicability tests system with fiber grating expansion joint.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution：The utility model includes light
Fine grating demodulation instrument, displacement sensor, metal probe and control centre, fiber Bragg grating (FBG) demodulator are passed by transmission cable and displacement
Sensor is connected, and displacement sensor surface is provided with insulation blocking cylinder, and insulation blocking cylinder upper surface is equipped with fixing piece, fixing piece two
Side is both provided with mounting hole, and insulation blocking cylinder is internally provided with telescopic rod, and telescopic rod side end is equipped with metal probe, optical fiber
Grating demodulation instrument front end face is equipped with USB interface, is provided with control button on the left of USB interface, control button lower end is equipped with out
Button is closed, display screen is installed on the left of control button, thermovent, fiber grating are both provided at left and right sides of fiber Bragg grating (FBG) demodulator
(FBG) demodulator is connected by transfer wire with the input terminal of control centre.
As a kind of optimal technical scheme of the utility model, the metallic elastic carrier of fiber Bragg grating (FBG) demodulator uses low swollen
The material of swollen coefficient, the fixation in sensing element between fiber grating and metal object, uses low-shrinkage, high shear strength
Adhesive, the long-time stability for the sensor made in this way are good, measuring signal not by light source rise and fall, fibre-optical bending damage
The influence of the factors such as consumption, junction loss and detector aging.
As a kind of optimal technical scheme of the utility model, the quantity in the same direction of displacement sensor is provided with
Several groups, and the arrangement mode between displacement sensor constitutes networking structure, realizes networking test, improves work efficiency.
As a kind of optimal technical scheme of the utility model, fixing piece is internally provided with through-hole, through-hole wall spraying one
Layer non-skid film, and the diameter of through-hole is equal with the diameter of insulation blocking cylinder, ensure that the stability connected between component.
As a kind of optimal technical scheme of the utility model, telescopic rod is made of stainless steel material, and telescopic rod
Length and diameter size is respectively less than insulation blocking cylinder, and stainless steel material is corrosion-resistant, ensures the accuracy of the test of sensor, improves
The service life of device.
The advantageous effect that the utility model is reached is：The utility model is a kind of civil engineering fiber grating expansion joint
Test system, by the networking of the displacement flowmeter sensor, transmission cable and fiber Bragg grating (FBG) demodulator of the high precision and large measuring range of setting,
The real-time acquisition for realizing expansion joint size can solve networking under the premise of ensureing the measuring accuracy of sensing testing system
Problem, signal transmission use optical cable, whole process to exist without conducting medium；Realize anti-interference and anti-lightning characteristic, displacement sensing
Device also has the characteristics that essential burn-proof and explosion prevention, the interference of anti-forceful electric power, anti-lightning, reliability are high, is suitable for oil field, power plant, chemical industry, moves
Power machinery, nuclear power station, communications and transportation, mine engineering etc. need burn-proof and explosion prevention, jamproof occasion, and anti-interference, anti-lightning strike can
Remote real time monitoring may be implemented in networking fiber grating vibration test system, reduces the cost of manual inspection, improves the work of monitoring
Make efficiency.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
Novel embodiment for explaining the utility model, does not constitute limitations of the present invention together.
In the accompanying drawings：
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model networking structure schematic diagram.
Figure label：1, fiber Bragg grating (FBG) demodulator；2, displacement sensor；3, transmission cable；4, fixing piece；5, mounting hole；
6, insulation blocking cylinder；7, telescopic rod；8, metal probe；9, USB interface；10, switch button；11, control button；12, display screen；
13, thermovent；14, control centre.
Specific implementation mode
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
In the description of the present invention, it should be noted that the instructions such as term "vertical", "upper", "lower", "horizontal"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification
Description, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and behaviour
Make, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment：As shown in Figs. 1-2, the utility model provides a kind of civil engineering fiber grating expansion joint test system
System, including fiber Bragg grating (FBG) demodulator 1, displacement sensor 2, metal probe 8 and control centre 14, fiber Bragg grating (FBG) demodulator 1 pass through
Transmission cable 3 is connected with displacement sensor 2, and 2 surface of displacement sensor is provided with insulation blocking cylinder 6,6 upper surface of insulation blocking cylinder
Fixing piece 4 is installed, 4 both sides of fixing piece are both provided with mounting hole 5, and insulation blocking cylinder 6 is internally provided with telescopic rod 7, telescopic rod 7
Side end is equipped with metal probe 8, and 1 front end face of fiber Bragg grating (FBG) demodulator is equipped with USB interface 9,9 left side setting of USB interface
There are control button 11,11 lower end of control button that switch button 10 is installed, 11 left side of control button is equipped with display screen 12, optical fiber
1 left and right sides of grating demodulation instrument is both provided with thermovent 13, and fiber Bragg grating (FBG) demodulator 1 passes through transfer wire and control centre 14
Input terminal is connected.
The metallic elastic carrier of work fiber Bragg grating (FBG) demodulator 1 uses low-expansion material, optical fiber light in sensing element
Fixation between grid and metal object uses low-shrinkage, the adhesive of high shear strength, the sensor made in this way
Long-time stability it is good, measuring signal is not by factors such as light source fluctuating, bending loss of optical fiber, junction loss and detector agings
It influences, the quantity in the same direction of displacement sensor 2 is provided with several groups, and the arrangement mode between displacement sensor 2
Networking structure is constituted, networking test is realized, improves work efficiency, fixing piece 4 is internally provided with through-hole, through-hole wall spraying
One layer of non-skid film, and the diameter of through-hole is equal with the diameter of insulation blocking cylinder 6, ensure that the stability connected between component,
Telescopic rod 7 is made of stainless steel material, and the length and diameter size of telescopic rod 7 is respectively less than insulation blocking cylinder 6, stainless steel
Expect corrosion-resistant, ensures the accuracy of the test of sensor, improve the service life of device.
Operation principle：When staff uses the device, the switch button 10 above fiber Bragg grating (FBG) demodulator 1 is pressed,
Design is optimized to displacement meter mechanical structure using finite element analysis software, making it, theoretically acceleration resolution ratio reaches range
0.05%, displacement sensor 2 can easily make wavelength-division multiplex technique, and multiple fiber gratings are concatenated in an optical fiber and are divided
Cloth measures, and realizes networking test, and displacement sensor 2 is a kind of stretching structure, is detected in expansion joint by telescopic rod 7, logical
The information crossed the detection of metal probe 8 and fed back is transmitted to control to fiber Bragg grating (FBG) demodulator 1 into excessively a series of processing
Center 14 processed, signal transmission use optical cable, whole process to exist without conducting medium, realize anti-interference and anti-lightning characteristic, in place
When displacement sensor 2 measures signal, measuring signal is not old by light source fluctuating, bending loss of optical fiber, junction loss and detector
The influence of the factors such as change, treated later, and information is shown by display screen 12, and data reference is provided for testing staff.
The utility model is that system is tested at a kind of civil engineering fiber grating expansion joint, a large amount of by the high-precision of setting
The real-time acquisition of expansion joint size is realized in the networking of the displacement flowmeter sensor 2, transmission cable 3 and fiber Bragg grating (FBG) demodulator 1 of journey,
Under the premise of ensureing the measuring accuracy of sensing testing system, networking can be solved the problems, such as, signal transmission uses optical cable, whole
There is no conducting medium presence；Realize that anti-interference and anti-lightning characteristic, displacement sensor 2 also have essential burn-proof and explosion prevention, resist by force
The features such as electrical interference, anti-lightning, high reliability, is suitable for oil field, power plant, chemical industry, dynamic power machine, nuclear power station, communications and transportation, mine
Mountain engineering etc. needs burn-proof and explosion prevention, jamproof occasion, it is anti-interference, anti-lightning strike can networking fiber grating vibration test system can
To realize remote real time monitoring, the cost of manual inspection is reduced, improves the working efficiency of monitoring.
Finally it should be noted that：The preferred embodiment that these are only the utility model, is not limited to this practicality
It is novel, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all include
It is within the protection scope of the utility model.
Claims (4)
1. a kind of civil engineering with fiber grating expansion joint test system, which is characterized in that including fiber Bragg grating (FBG) demodulator (1),
Displacement sensor (2), metal probe (8) and control centre (14), fiber Bragg grating (FBG) demodulator (1) pass through transmission cable (3) and position
Displacement sensor (2) is connected, and displacement sensor (2) surface is provided with insulation blocking cylinder (6), the installation of insulation blocking cylinder (6) upper surface
There are fixing piece (4), fixing piece (4) both sides to be both provided with mounting hole (5), insulation blocking cylinder (6) is internally provided with telescopic rod (7),
Telescopic rod (7) side end is equipped with metal probe (8), and fiber Bragg grating (FBG) demodulator (1) front end face is equipped with USB interface (9),
It is provided with control button (11) on the left of USB interface (9), control button (11) lower end is equipped with switch button (10), control button
(11) left side is equipped with display screen (12), and thermovent (13), fiber grating are both provided at left and right sides of fiber Bragg grating (FBG) demodulator (1)
(FBG) demodulator (1) is connected by transfer wire with the input terminal of control centre (14).
2. a kind of civil engineering according to claim 1 tests system with fiber grating expansion joint, which is characterized in that displacement
The quantity in the same direction of sensor (2) is provided with several groups, and the arrangement mode composition group between displacement sensor (2)
Web frame.
3. a kind of civil engineering according to claim 1 tests system with fiber grating expansion joint, which is characterized in that fixed
Part (4) is internally provided with through-hole, and through-hole wall sprays one layer of non-skid film, and the diameter of the diameter of through-hole and insulation blocking cylinder (6)
It is equal in magnitude.
4. a kind of civil engineering according to claim 1 tests system with fiber grating expansion joint, which is characterized in that flexible
Bar (7) is made of stainless steel material, and the length and diameter size of telescopic rod (7) is respectively less than insulation blocking cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820200098.9U CN208059805U (en) | 2018-02-06 | 2018-02-06 | A kind of civil engineering fiber grating expansion joint test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820200098.9U CN208059805U (en) | 2018-02-06 | 2018-02-06 | A kind of civil engineering fiber grating expansion joint test system |
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| Publication Number | Publication Date |
|---|---|
| CN208059805U true CN208059805U (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820200098.9U Expired - Fee Related CN208059805U (en) | 2018-02-06 | 2018-02-06 | A kind of civil engineering fiber grating expansion joint test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014322A (en) * | 2021-02-19 | 2021-06-22 | 郑州职业技术学院 | Optical fiber grating signal processor |
| CN114543694A (en) * | 2021-12-03 | 2022-05-27 | 国网新源控股有限公司 | Wide-range panel parting measuring device |
-
2018
- 2018-02-06 CN CN201820200098.9U patent/CN208059805U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014322A (en) * | 2021-02-19 | 2021-06-22 | 郑州职业技术学院 | Optical fiber grating signal processor |
| CN113014322B (en) * | 2021-02-19 | 2022-01-18 | 郑州职业技术学院 | Optical fiber grating signal processor |
| CN114543694A (en) * | 2021-12-03 | 2022-05-27 | 国网新源控股有限公司 | Wide-range panel parting measuring device |
| CN114543694B (en) * | 2021-12-03 | 2024-06-25 | 国网新源控股有限公司 | Wide-range panel parting measuring device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |