CN207300447U - Bridge security monitoring device based on optical fiber sensing technology - Google Patents
Bridge security monitoring device based on optical fiber sensing technology Download PDFInfo
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- CN207300447U CN207300447U CN201721355442.3U CN201721355442U CN207300447U CN 207300447 U CN207300447 U CN 207300447U CN 201721355442 U CN201721355442 U CN 201721355442U CN 207300447 U CN207300447 U CN 207300447U
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- optical fiber
- fiber sensing
- bridge
- monitoring device
- security monitoring
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Abstract
The utility model discloses the bridge security monitoring device based on optical fiber sensing technology, including optical fiber sensing analyzer and monitor terminal, and light path splice tray, power module and the wireless transport module being connected with optical fiber sensing analyzer, the monitor terminal includes server and the LED large-size screen monitors being connected with server, and the optical fiber sensing analyzer completes information exchange by wireless transport module and the server.The utility model solves the problems, such as that there are limitation in practical applications by hand inspection in traditional Bridge Inspection existing in the prior art, bridge security monitoring device based on optical fiber sensing technology is provided, it can in time react the security risk of appearance when applying, and realize that the parameters such as the temperature to bridge key position, stress, vibration, gap change are monitored in real time.
Description
Technical field
It the utility model is related to bridge security monitoring device, and in particular to the bridge security monitoring based on optical fiber sensing technology
Equipment.
Background technology
Traditional Bridge Inspection is the information by manually visually inspecting or being obtained by means of portable instrument measurement
The safe condition of bridge structure is assessed.Artificial bridge inspection is divided into running check, inspects periodically and special examined.But
Artificial bridge inspection method has significant limitation in practical applications.The shortcoming of traditional detection mode is mainly manifested in：
Need a large amount of human and material resources and there are many inspection blind spots, this is especially prominent to modern large bridge；Subjectivity is strong, it is difficult to quantifies；
Lack globality, hand inspection can only provide local detect and diagnose information using solid memder as object, and cannot provide whole
The comprehensive structural health detect and assess information of body；Normal traffic circulation is influenced, usually requires to take for relatively large bridge
If observation platform or observation vehicle, can not avoid the need for implementing traffic control；Cycle is grown, poor in timeliness, the inspection of large bridge
The cycle is looked into up to the several years, in the case of having major traffic accidents or serious natural calamity, it is impossible to provide to policymaker and the public
Instant messages.
From the above it can be seen that manually bridge inspection program and facility, can not directly with the detection that is effectively applied to large bridge
On, in order to provide one be directed to bridge structural healthy monitoring system, for monitor bridge during operation the security of structure,
Durability and usability, propose the utility model.
Utility model content
The utility model solves actually should in traditional Bridge Inspection existing in the prior art by hand inspection
There are the problem of limitation in, there is provided the bridge security monitoring device based on optical fiber sensing technology, it can be to going out when applying
Existing security risk can react in time, realize every ginsengs such as the temperature to bridge key position, stress, vibration, gap change
Number is monitored in real time, and judges the health condition of bridge by analytical equipment according to monitoring data, and bridge maintenance work personnel can
Really to recognize the safe condition of bridge in real time, effective reference frame, Jin Ertong are provided for the various activities on bridge
Cross and provide required early stage danger warning and lesion assessment to ensure the safety of bridge, so as to greatly enhance the existence energy of bridge
Power.
The utility model is achieved through the following technical solutions：
Bridge security monitoring device based on optical fiber sensing technology, including optical fiber sensing analyzer and monitor terminal, and
Light path splice tray, power module and the wireless transport module being connected with optical fiber sensing analyzer, if the light path splice tray is set
Dry fibre-optical splice, the fibre-optical splice are connected from temperature compensation strain transducer, reusable strain transducer, optical fiber joint measurement respectively
Meter, pressure gauge, accelerometer, reinforcing rib meter, temperature sensor, embedment strain transducer and displacement meter, the monitor terminal include
Server and the LED large-size screen monitors being connected with server, the optical fiber sensing analyzer pass through wireless transport module and the service
Device completes information exchange.Fiber grating be using optical fiber as basic material, by laser machine formed a kind of particular device, can
Meet that the light of Bragg condition is reflected, in Practical Project, the point to be detected is if subjected to strain, temperature, pressure, displacement
Changing with acceleration etc., wavelength will change, and the stress situation of this point can be so detected by the change of Detection wavelength,
And then it may determine that the safe condition of detected bridge.It is described from temperature compensation strain transducer, reusable strain transducer, optical fiber
Crack gauge, pressure gauge, accelerometer, reinforcing rib meter, temperature sensor, embedment strain transducer and displacement meter etc. sensor will measure
Non electrical quantity be converted into the electricity that easily measures after, after analog-to-digital conversion, digital quantity is transmitted directly to Fibre Optical Sensor analysis
Instrument, optical fiber sensing analyzer send alarm command when exceeding the threshold quantity of setting by docking received digital quantity, and by numeral
Amount is transferred to server by wireless transport module, then is shown by LED large-size screen monitors.
Further, the bridge security monitoring device based on optical fiber sensing technology, the power module include DC power supply,
Solar panel and maintenance-free battery.DC power supply is used for system normal power supply；Solar panel is used to receive the sun
Can be system power supply, for common batteries and recyclable rechargeable battery, solar cell belongs to more energy efficient environmentally friendly green
Color product；When power supply trouble occurs in DC power supply, maintenance-free battery is system power supply, so as to avoid data caused by shutting down
Lose.
Further, the bridge security monitoring device based on optical fiber sensing technology, the wireless transport module are gsm wireless
Transport module or cdma wireless transport module or 4G wireless transport modules.The obstacle of distance can be broken through by being wirelessly transferred, during transmission
Do not depend on actual track, so as to avoid maintenance line fault the problem of.
Further, the bridge security monitoring device based on optical fiber sensing technology, the fibre-optical splice with it is described from temperature compensation
Strain transducer, reusable strain transducer, optical fiber crack gauge, pressure gauge, accelerometer, reinforcing rib meter, temperature sensor, embedment
Strain transducer is connected with displacement meter by communications optical cable.Communications optical cable is the cable heart and outer jacket institute being made of some optical fiber
Composition.For optical fiber compared with traditional symmetrical copper circuit and coaxial copper circuit, its transmission capacity is much bigger；Attenuation is few；Transmission distance
From length；It is small；It is light-weight；Without electromagnetic interference；Cost is low.
Further, the bridge security monitoring device based on optical fiber sensing technology, further includes and is connected with the fibre-optical splice
Dynamic on-ground weigher, anemobiagraph and GPS.Dynamic on-ground weigher is used for the weight for monitoring vehicular traffic on bridge, and anemobiagraph is used to monitor bridge
Air velocity around beam, GPS are used for the static position and static displacement for monitoring each position of bridge.
The utility model compared with prior art, has the following advantages and advantages：
1st, the utility model can react the security risk of appearance in time, realizes the temperature to bridge key position, answers
The parameters such as power, vibration, gap change are monitored in real time, and judge the health of bridge by analytical equipment according to monitoring data
Situation, bridge maintenance work personnel can really recognize the safe condition of bridge in real time, be carried for the various activities on bridge
Ensure the safety of bridge for effective reference frame, and then by providing required early stage danger warning and lesion assessment,
So as to greatly enhance the survival ability of bridge.
2nd, the utility model replaces traditional electric transducer, compared with traditional electric transducer, light by fibre optical sensor
Fiber sensor has the following advantages：The sensor of multiple identical or different types can concatenate multiplexing on an optical fiber, system
Integrated level is high；The sensor distance concatenated on simple optical fiber can be several centimetres or tens kilometers, be directly realized by remote transmission；Survey
Accuracy of measurement and high resolution；The zero bias value of sensor is not drifted about, and belongs to absolute measurement, and long-term work performance is stablized.Sensing amount
Detection and transmission are optical signal, from electromagnetic interference and the influence of nuclear radiation；Good environmental adaptability, can be used for for a long time high temperature,
High humidity and the adverse circumstances there are chemical erosion etc.；It is light-weight, it is small, it is easy to install；With optical signal centre wavelength value
Characterization is measured, and is influenced from light-intensity variation and Transmission Fibers bending loss etc.；Sensor concatenation chain has self-healing function：Just
Often during work, only the head end for sensing concatenation chain or tail end need to be connected to optical fiber grating sensing network analyzer and all biographies can be achieved
Detected while sensor signal；Once the fortuitous event or other disasters in construction cause sensor to concatenate chain breakdown, then can be with
The other end for sensing chain is also coupled to optical fiber grating sensing network analyzer, at this time using breakpoint as boundary, all biographies in the left and right sides
Sensor is connected to optical fiber grating sensing network analyzer by the head end and tail end that concatenate chain respectively and is detected, and realizes self-healing
Close.
3rd, the utility model be one using bridge structure as platform, using new FBG sensor technology, on bridge
The synthesis that the multiple parameters such as the malformation of key position, environment temperature distribution, level of ground water, structural vibration are monitored in real time
Monitoring system, it can monitor structural response of the bridge under the effect of the factors such as various environment, load in real time, and can effectively carry
For the scientific basis of bridge maintenance management, the overall management level of bridge is significantly improved, so as to ensure bridge to greatest extent
Safety beam operation, it is pre- to diagnose bridge defect and extend bridge service life.The equipment has following features：Quasi-distributed full flash ranging
As passive device, the sensing of transducing signal and transmission are optical signal, thus are monitored for amount and Transmission Fibers grating sensor sheet
Scene does not have electronic equipment, from electromagnetic interference, without doing lightning Protection.Measuring accuracy is high and determines with accurate measuring point space
Capability, fiber-optic grating sensor compact structure and laying distance do not limit, and the locus of each measuring point can be accurately positioned.
Real-time is good, and the synchronous data collection frequency of all monitoring points can be set in Millisecond to second level in system.System is installed and length
Stablize during phase use without calibration, fiber grating essence, there is no null offset.Since fiber grating uses light center ripple
Long characterization physical quantity value, belongs to digital quantity, due to curved during the aging decay of light source and Transmission Fibers laying, use
Attenuated optical signal that is bent, disturbing and introduce does not influence measurement accuracy.Optical fiber sensing analyzer need not without movable member, long-time service
Calibration.High reliability, fibre optical sensor and transmission line are silica fibre, can keep many decades work in severe humiture environment
Make the service life.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, does not form the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structure diagram.
Embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model, is not intended to limit the scope of the present invention.
Embodiment
As shown in Figure 1, the bridge security monitoring device based on optical fiber sensing technology, including optical fiber sensing analyzer and monitoring
Terminal, and light path splice tray, power module and the wireless transport module being connected with optical fiber sensing analyzer, the power module
Including DC power supply, solar panel and maintenance-free battery.DC power supply is used for system normal power supply；Solar panel
It is system power supply for receiving solar energy, for common batteries and recyclable rechargeable battery, solar cell belongs to more
Energy-saving and environment-friendly green product；When power supply trouble occurs in DC power supply, maintenance-free battery is system power supply, so as to avoid stopping
Loss of data caused by machine.The wireless transport module is wireless for gsm wireless transport module or cdma wireless transport module or 4G
Transport module.The obstacle of distance can be broken through by being wirelessly transferred, and when transmission does not depend on actual track, so as to avoid maintenance circuit therefore
The problem of barrier.The light path splice tray sets several fibre-optical splices, the fibre-optical splice with it is described from temperature compensation strain transducer,
Reusable strain transducer, optical fiber crack gauge, pressure gauge, accelerometer, reinforcing rib meter, temperature sensor, dynamic on-ground weigher, wind speed
Instrument, GPS, embedment strain transducer are connected with displacement meter by communications optical cable.Communications optical cable is the cable being made of some optical fiber
The heart and outer jacket are formed.For optical fiber compared with traditional symmetrical copper circuit and coaxial copper circuit, its transmission capacity is much bigger；Decline
Consumption is few；Transmission range is grown；It is small；It is light-weight；Without electromagnetic interference；Cost is low.Dynamic on-ground weigher is used to monitor passing car on bridge
Weight, anemobiagraph is used to monitoring air velocity around bridge, and GPS is used for the static position for monitoring each position of bridge and quiet
State displacement.The monitoring device includes server and the LED large-size screen monitors being connected with server, the optical fiber sensing analyzer pass through
Wireless transport module completes information exchange with the server.Fiber grating is using optical fiber as basic material, passes through Laser Processing
A kind of particular device formed, disclosure satisfy that the light of Bragg condition is reflected, in Practical Project, if the point to be detected
Strained, temperature, pressure, displacement and acceleration etc. change, and wavelength will change, so can by the change of Detection wavelength
To detect the stress situation of this point, and then it may determine that the safe condition of detected bridge.It is described from temperature compensation strain sensing
Device, reusable strain transducer, optical fiber crack gauge, pressure gauge, accelerometer, reinforcing rib meter, temperature sensor, embedment strain sensing
After the non electrical quantity of measurement is converted into the electricity that easily measures by the sensor such as device and displacement meter, by analog-to-digital conversion, by digital quantity
Optical fiber sensing analyzer is transmitted directly to, when optical fiber sensing analyzer exceedes the threshold quantity of setting by docking received digital quantity
Alarm command is sent, and digital quantity is transferred to server by wireless transport module, then is shown by LED large-size screen monitors.
Above-described embodiment, the purpose of this utility model, technical solution and beneficial effect have been carried out into
One step describes in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, where within the spirit and principles of the present invention, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of this utility model.
Claims (5)
1. the bridge security monitoring device based on optical fiber sensing technology, it is characterised in that including optical fiber sensing analyzer and monitoring
Terminal, and light path splice tray, power module and the wireless transport module being connected with optical fiber sensing analyzer, the light path continue
Box sets several fibre-optical splices, and the fibre-optical splice is connected from temperature compensation strain transducer, reusable strain transducer, light respectively
Fine crack gauge, pressure gauge, accelerometer, reinforcing rib meter, temperature sensor, embedment strain transducer and displacement meter, the monitoring is eventually
The LED large-size screen monitors for including server and being connected with server are held, the optical fiber sensing analyzer passes through wireless transport module and institute
State server and complete information exchange.
2. the bridge security monitoring device according to claim 1 based on optical fiber sensing technology, it is characterised in that the electricity
Source module includes DC power supply, solar panel and maintenance-free battery.
3. the bridge security monitoring device according to claim 1 based on optical fiber sensing technology, it is characterised in that the nothing
Line transport module is gsm wireless transport module or cdma wireless transport module or 4G wireless transport modules.
4. the bridge security monitoring device according to claim 1 based on optical fiber sensing technology, it is characterised in that the light
Fine connector with it is described from temperature compensation strain transducer, reusable strain transducer, optical fiber crack gauge, pressure gauge, accelerometer, reinforcing bar
Meter, temperature sensor, embedment strain transducer are connected with displacement meter by communications optical cable.
5. the bridge security monitoring device according to claim 1 based on optical fiber sensing technology, it is characterised in that further include
Dynamic on-ground weigher, anemobiagraph and the GPS being connected with the fibre-optical splice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721355442.3U CN207300447U (en) | 2017-10-20 | 2017-10-20 | Bridge security monitoring device based on optical fiber sensing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721355442.3U CN207300447U (en) | 2017-10-20 | 2017-10-20 | Bridge security monitoring device based on optical fiber sensing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207300447U true CN207300447U (en) | 2018-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721355442.3U Expired - Fee Related CN207300447U (en) | 2017-10-20 | 2017-10-20 | Bridge security monitoring device based on optical fiber sensing technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108765894A (en) * | 2018-06-22 | 2018-11-06 | 核工业西南勘察设计研究院有限公司 | A kind of bridge health condition monitoring alarm system |
| CN110715684A (en) * | 2019-09-30 | 2020-01-21 | 中国科学院合肥物质科学研究院 | Bridge cable clamp health monitoring system and method based on optical fiber sensing |
| CN111424833A (en) * | 2020-03-24 | 2020-07-17 | 浙江大学宁波理工学院 | Civil engineering damping device and control method thereof |
-
2017
- 2017-10-20 CN CN201721355442.3U patent/CN207300447U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108765894A (en) * | 2018-06-22 | 2018-11-06 | 核工业西南勘察设计研究院有限公司 | A kind of bridge health condition monitoring alarm system |
| CN110715684A (en) * | 2019-09-30 | 2020-01-21 | 中国科学院合肥物质科学研究院 | Bridge cable clamp health monitoring system and method based on optical fiber sensing |
| CN110715684B (en) * | 2019-09-30 | 2022-03-22 | 中国科学院合肥物质科学研究院 | Bridge cable clamp health monitoring system and method based on optical fiber sensing |
| CN111424833A (en) * | 2020-03-24 | 2020-07-17 | 浙江大学宁波理工学院 | Civil engineering damping device and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20201020 |