CN108444435A - A kind of bridge strain monitoring sensing device and its monitoring method - Google Patents
A kind of bridge strain monitoring sensing device and its monitoring method Download PDFInfo
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- CN108444435A CN108444435A CN201810696348.7A CN201810696348A CN108444435A CN 108444435 A CN108444435 A CN 108444435A CN 201810696348 A CN201810696348 A CN 201810696348A CN 108444435 A CN108444435 A CN 108444435A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 98
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- 238000006243 chemical reaction Methods 0.000 claims description 9
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- 238000012806 monitoring device Methods 0.000 claims description 7
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- 238000004891 communication Methods 0.000 claims description 3
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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Abstract
The present invention relates to bridge engineering construction technical fields, and disclose a kind of bridge strain monitoring sensing device and its monitoring method, sensor-based system is monitored including bridge ontology and bridge strain, it is installed with support column in the middle part of the bridge ontology, the back side of the support column is connected with support plate, the equal screw thread in the positive both sides of support column is socketed with lock-screw, and the other end of the lock-screw runs through and extends to the back side of support column and be socketed with the outer surface thread of support plate.Support plate is fixed on to the back side of support column by two lock-screws, plate easy to support is replaced, be conducive to overhaul the vibrating string extensometer in grooving, being applied in combination by fixed plate, supporting rod and backing plate again, be conducive to improve the stability of equilibrium of support plate, to improve the accuracy of vibrating string extensometer monitoring data, vibrating string extensometer is avoided surprisingly to fall off or damage and influence normally to monitor.
Description
Technical field
The present invention relates to bridge engineering construction technical field, specially a kind of bridge strain monitoring sensing device and its monitoring
Method.
Background technology
The Large Span Bridges construction in China achieves great achievement in recent years, and wherein bridge construction monitoring plays important
Technical support effect, summarize engineering experience it can be found that it is widely used based on vibrating string type strain transducer construction strain
Monitoring data are particularly important, and the strain testing technology in bridge construction monitoring needs further to conduct a research.
Corresponding strain monitoring is carried out to bridge using sensor technology mostly at present, the most widely used is exactly in bridge
Beam bottom portion is bonded strain gauge, but not firm enough due to being bonded, and strain gauge easily damages under the action of water or other factors
Or fall off from the bottom of bridge, and current monitoring method is excessively single, and sensing data efficiency of transmission is too low, we carry thus
A kind of bridge strain has been supplied to monitor sensing device and its monitoring method.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of bridge strains to monitor sensing device and its monitoring method,
Have and be easily installed strain gauge, the advantages that data transmission efficiency is higher, and monitoring effect is good, solves to be bonded in bridge bottom and strain
Timing, not firm enough due to being bonded, under the action of water or other factors damage or de- from the bottom of bridge easily occurs for strain gauge
It falls, monitoring method is excessively single, the too low problem of sensing data efficiency of transmission.
(2) technical solution
It is easily installed strain gauge for realization is above-mentioned, data transmission efficiency is higher, the good purpose of monitoring effect, and the present invention provides
Following technical solution：A kind of bridge strain monitoring sensing device, including bridge ontology and bridge strain monitor sensor-based system, described
Support column is installed in the middle part of bridge ontology, the back side of the support column is connected with support plate, and the support column is just
The equal screw thread in both sides in face is socketed with lock-screw, the other end of the lock-screw run through and extend to support column the back side and with
The outer surface thread of support plate is socketed, and the both sides at the top of the support plate offer grooving, and peace is fixed in the inside of the grooving
Equipped with vibrating string extensometer, the upper surface of the vibrating string extensometer is touched with the bottom connection of bridge ontology, the support column
Outer surface fixing sleeve is equipped with fixed plate, and the both sides of the fixed plate are installed with supporting rod, the other end of the supporting rod
It is installed with backing plate, the upper surface of the backing plate is flexibly connected with the bottom of support plate；
The bridge strain monitoring sensor-based system includes reception signal terminal, real-time data acquisition device and Industry Control meter
Calculation machine, the output end and input terminal of the reception signal terminal are electrical with the input terminal of real-time data acquisition device and output end respectively
Connection, the input terminal and output end of the real-time data acquisition device are electrical with industrial control computer output end and input terminal respectively
The output end of connection, the real-time data acquisition device is electrically connected with mobile AM access module and data gateway, the mobile access
The output end of module is electrically connected with data conversion module, and the output end of the data conversion module is electrically connected with monitoring application
The output end of server, the monitoring application server is electrically connected with structural test database server, the bridge strain
Monitoring sensor-based system is internally provided with interchanger, the input terminal and output end of the interchanger respectively with monitoring application server and
The output end and input terminal of structural test database server are electrically connected, and the output end signal of the interchanger is connected with fire prevention
The output end signal of wall, the data gateway is connected with monitoring data Switching Module, the output of the monitoring data Switching Module
End is electrically connected with routing switch, and the output end of the routing switch and the input end signal of fire wall connect.
Preferably, the inside of the support column offers threaded hole compatible with lock-screw, the lock-screw
One end extends to the inside of threaded hole and is connect with the inner thread of threaded hole.
Preferably, the reception signal terminal is internally provided with transducer signal amplifier, vibratory string strain transducer, optical fiber
Grating sensor and camera monitoring device, the input terminal and output end of the transducer signal amplifier are strained with vibratory string respectively to be passed
Sensor, the output end of fiber-optic grating sensor and camera monitoring device and input terminal are electrically connected.
Preferably, the fiber-optic grating sensor is internally provided with multifiber cable connector, the multifiber cable connector
Output end be electrically connected with fused fiber splice packet, the output end signal of the fused fiber splice packet is connected with fibre-optic terminus platform, described
The output end signal of fibre-optic terminus platform is connected with fiber grating processor.
A kind of monitoring method of bridge strain monitoring sensing device, the monitoring method are as follows：
The first step：The installation of vibrating string extensometer
Fixed plate is welded on to the outer surface of support column first, then support plate is positioned over to the top of two backing plates, this
When support plate front touched with the back face of support column, then lock-screw is inserted into threaded hole, one end of lock-screw
It extends to the back side of support column and is socketed with the screw thread of support plate, support plate is consolidated, is then bonded vibrating string extensometer
In the inside of grooving, pressure string and the bottom connection of bridge ontology at the top of vibrating string extensometer touch, and install；
Second step：The monitoring of adaptability to changes
Real-time data acquisition device is controlled by industrial control computer to be acquired the sensing data of reception signal terminal,
Sensing data is divided into two parts, is transmitted separately in mobile AM access module and data gateway, after mobile AM access module processing
Displacement information be transferred to monitoring application server, displacement information is transmitted to structural test database clothes by monitoring application server
The inside of business device is stored, and interchanger carries out data friendship with monitoring application server and structural test database server respectively
It changes, another part sensing data is transferred to data gateway into row set, is then transmit to monitoring data Switching Module, then route
Converter changes according to Network Topology for Real-Time, is in communication with each other transmission routing iinformation, is selected using the routing iinformation received by routeing
Agreement calculating is selected, routing table is updated, routing switch carries out data exchange with fire wall, and security protection is carried out to the system.
Preferably, institute's displacement information include the amount of deflection of bridge ontology, lateral displacement, length travel, horizontal displacement and
The change information of concrete cracks, multiple vibration nodal points, ess-strain node and displacement node information are passed to monitoring application
In server, subsequent transmission is carried out.
Preferably, the transducer signal amplifier in the reception signal terminal is by vibratory string strain transducer, fiber grating
The frequency signal that sensor and camera monitoring device are transmitted is amplified, then is transmitted it in real-time data acquisition device, institute
It states fiber grating processor of the fiber-optic grating sensor inside and data processing, prison is carried out to the strain of mechanism and temperature change
Its reflection wavelength is surveyed, data gateway is then passed to.
Preferably, what the vibrating string extensometer provided is vibration frequency, needs to be converted into stress value, data transfer device
It is as follows：
(1) dependent variable method for computing data
U ε=△ F/k, △ F=F02-F12
In formula:U ε are dependent variable
△ F are the variable quantity of the strain gauge output valve that measures in real time relative to a reference value, unit kHz2；
K is the calibration coefficient of vibrating string extensometer；
F1 is the real-time measurement values of vibrating string extensometer；
F0 is the initial quasi- value of vibrating string extensometer；
(2) pressure value calculating method
Pm=u ε/A
A is vibrating string extensometer per the corresponding dependent variables of kN (u ε).
(3) advantageous effect
Compared with prior art, the present invention provides a kind of bridge strain monitoring sensing device and its monitoring method, have
Following advantageous effect：
1, bridge strain monitoring sensing device and its monitoring method, branch is fixed on by two lock-screws by support plate
The back side of dagger, plate easy to support are replaced, and are conducive to overhaul the vibrating string extensometer in grooving, then pass through fixation
Plate, supporting rod and backing plate are applied in combination, and are conducive to the stability of equilibrium for improving support plate, to improve vibrating string extensometer prison
The accuracy of measured data avoids vibrating string extensometer from surprisingly falling off or damage and influence normally to monitor.
2, bridge strain monitoring sensing device and its monitoring method, by reception signal terminal to the biography of adaptability to changes data
It is defeated, data acquisition is carried out convenient for real-time data acquisition device, using the collective effect of mobile AM access module and data gateway, is conducive to
The data monitored to vibratory string strain transducer and fiber-optic grating sensor carry out classification transmission, convenient for monitoring in real time, utilize number
It converts frequency signal to digital signal according to conversion module, then by monitoring application server and structural test database server
Data are stored and are remembered, fiber data is monitored using monitoring data Switching Module, are conducive to improve the device
To the monitoring effect of bridge.
Description of the drawings
Fig. 1 is the mounting structure schematic diagram of vibrating string extensometer of the present invention；
Fig. 2 is that bridge strain of the present invention monitors sensor-based system structure chart；
Fig. 3 is the structural schematic diagram of reception signal terminal of the present invention；
Fig. 4 is the structural schematic diagram of fiber-optic grating sensor of the present invention.
In figure：1, bridge ontology；2, support column；3, support plate；4, lock-screw；5, grooving；6, vibrating string extensometer；7、
Fixed plate；8, supporting rod；9, backing plate.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 4 are please referred to Fig.1, a kind of bridge strain monitoring sensing device, including bridge ontology 1 and bridge strain monitoring sense
The middle part of system, bridge ontology 1 is installed with support column 2, and the back side of support column 2 is connected with support plate 3, support column 2
The positive equal screw thread in both sides is socketed with lock-screw 4, the other end of lock-screw 4 run through and extend to support column 2 the back side and
It is socketed with the outer surface thread of support plate 3, the inside of support column 2 offers threaded hole compatible with lock-screw 4, locking screw
One end of nail 4 extends to the inside of threaded hole and is connect with the inner thread of threaded hole, and the both sides at 3 top of support plate offer
The inside of grooving 5, grooving 5 is installed with vibrating string extensometer 6, and vibrating string extensometer 6 is internally provided with vibratory string strain sensing
Device, the upper surface of vibrating string extensometer 6 are touched with the bottom connection of bridge ontology 1, and the outer surface fixing sleeve of support column 2 is equipped with fixation
Plate 7, the both sides of fixed plate 7 are installed with supporting rod 8, and the other end of supporting rod 8 is installed with backing plate 9, backing plate 9 it is upper
Surface is flexibly connected with the bottom of support plate 3, support plate 3 is fixed on to the back side of support column 2 by two lock-screws 4, just
It is replaced in support plate 3, is conducive to overhaul the vibrating string extensometer 6 in grooving 5, then pass through fixed plate 7, supporting rod
8 and backing plate 9 be applied in combination, be conducive to the stability of equilibrium for improving support plate 3, number monitored to improve vibrating string extensometer 6
According to accuracy, avoid vibrating string extensometer 6 surprisingly fall off or damage and influence normally to monitor；
Bridge strain monitoring sensor-based system includes that reception signal terminal, real-time data acquisition device and Industry Control calculate
Machine, reception signal terminal are internally provided with transducer signal amplifier, vibratory string strain transducer, fiber-optic grating sensor and camera shooting
Monitoring device, the input terminal and output end of transducer signal amplifier respectively with vibratory string strain transducer, fiber-optic grating sensor
It is electrically connected with input terminal with the output end of camera monitoring device, fiber-optic grating sensor is internally provided with multifiber cable connection
The output end of part, multifiber cable connector is electrically connected with fused fiber splice packet, and the output end signal of fused fiber splice packet is connected with light
Fine terminal identity, the output end signal of fibre-optic terminus platform are connected with fiber grating processor, the output end of reception signal terminal and defeated
Enter end to be electrically connected with the input terminal of real-time data acquisition device and output end respectively, the input terminal of real-time data acquisition device and output
End is electrically connected with industrial control computer output end and input terminal respectively, and the output end of real-time data acquisition device is electrically connected with
The output end of mobile AM access module and data gateway, mobile AM access module is electrically connected with data conversion module, data conversion mould
The output end of block is electrically connected with monitoring application server, and the output end for monitoring application server is electrically connected with structural test number
According to library server, bridge strain monitoring sensor-based system is internally provided with interchanger, the input terminal and output end of interchanger respectively with
The output end and input terminal for monitoring application server and structural test database server are electrically connected, the output end letter of interchanger
Number it is connected with fire wall, the output end signal of data gateway is connected with monitoring data Switching Module, monitoring data Switching Module
Output end is electrically connected with routing switch, and the output end of routing switch and the input end signal of fire wall connect, and pass through letter
The transmission for number receiving terminal-pair strain force data, carries out data acquisition convenient for real-time data acquisition device, utilizes mobile AM access module
With the collective effect of data gateway, be conducive to divide the data that vibratory string strain transducer and fiber-optic grating sensor are monitored
Class is transmitted, and convenient for monitoring in real time, converts frequency signal to digital signal using data conversion module, then by monitoring application clothes
Business device and structural test database server are stored and are remembered to data, using monitoring data Switching Module to fiber data
It is monitored, is conducive to the monitoring effect for improving the device to bridge.
A kind of monitoring method of bridge strain monitoring sensing device, monitoring method are as follows：
The first step：The installation of vibrating string extensometer
Fixed plate 7 is welded on to the outer surface of support column 2 first, then support plate 3 is positioned over to the top of two backing plates 9
Portion, the front of support plate 3 and the back face of support column 2 are tactile at this time, then lock-screw 4 are inserted into threaded hole, locking screw
One end of nail 4 extends to the back side of support column 2 and is socketed with the screw thread of support plate 3, and support plate 3 is consolidated, then by vibratory string
Formula strain gauge 6 is bonded in the inside of grooving 5, and the pressure string and the bottom connection of bridge ontology 1 at 6 top of vibrating string extensometer touch,
It installs；
Second step：The monitoring of adaptability to changes
Real-time data acquisition device is controlled by industrial control computer to be acquired the sensing data of reception signal terminal,
Sensing data is divided into two parts, is transmitted separately in mobile AM access module and data gateway, after mobile AM access module processing
Displacement information be transferred to monitoring application server, displacement information is transmitted to structural test database clothes by monitoring application server
The inside of business device is stored, displacement information include the amount of deflection of bridge ontology 1, lateral displacement, length travel, horizontal displacement and
The change information of concrete cracks, multiple vibration nodal points, ess-strain node and displacement node information are passed to monitoring application
In server, subsequent transmission is carried out, interchanger is respectively with monitoring application server and structural test database server into line number
According to exchange, another part sensing data is transferred to data gateway into row set, is then transmit to monitoring data Switching Module, then
Routing switch changes according to Network Topology for Real-Time, is in communication with each other transmission routing iinformation, passes through road using the routing iinformation received
It is calculated by selection agreement, updates routing table, routing switch carries out data exchange with fire wall, and it is anti-to carry out safety to the system
Shield, transducer signal amplifier in reception signal terminal is by vibratory string strain transducer, fiber-optic grating sensor and monitoring camera-shooting
The frequency signal that device is transmitted is amplified, then is transmitted it in real-time data acquisition device, and fiber-optic grating sensor relies on
Internal fiber grating processor carries out data processing to the strain of mechanism and temperature change, monitors its reflection wavelength, then passes
It is handed to data gateway.
What vibrating string extensometer provided is vibration frequency, needs to be converted into stress value, data transfer device is as follows：
(1) dependent variable method for computing data
U ε=△ F/k, △ F=F02-F12
In formula:U ε are dependent variable
△ F are the variable quantity of the strain gauge output valve that measures in real time relative to a reference value, unit kHz2；
K is the calibration coefficient of vibrating string extensometer；
F1 is the real-time measurement values of vibrating string extensometer；
F0 is the initial quasi- value of vibrating string extensometer；
(2) pressure value calculating method
Pm=u ε/A
A is vibrating string extensometer per the corresponding dependent variables of kN (u ε).
In conclusion bridge strain monitoring sensing device and its monitoring method, by two lock-screws 4 by support plate
3 are fixed on the back side of support column 2, and plate 3 easy to support is replaced, and are conducive to examine the vibrating string extensometer 6 in grooving 5
It repaiies, then being applied in combination by fixed plate 7, supporting rod 8 and backing plate 9, is conducive to the stability of equilibrium for improving support plate 3, to
The accuracy for improving 6 monitoring data of vibrating string extensometer avoids vibrating string extensometer 6 from surprisingly falling off or damage and influence normally to supervise
It surveys；Transmission by reception signal terminal to adaptability to changes data carries out data acquisition convenient for real-time data acquisition device, utilizes movement
The collective effect of AM access module and data gateway is conducive to the number monitored to vibratory string strain transducer and fiber-optic grating sensor
According to classification transmission is carried out, convenient for monitoring in real time, it converts frequency signal to digital signal using data conversion module, then pass through prison
It surveys application server and structural test database server is stored and remembered to data, utilize monitoring data Switching Module pair
Fiber data is monitored, and is conducive to the monitoring effect for improving the device to bridge；It solves and is bonded strain gauge in bridge bottom
When, not firm enough due to being bonded, under the action of water or other factors damage or de- from the bottom of bridge easily occurs for strain gauge
It falls, monitoring method is excessively single, the too low problem of sensing data efficiency of transmission.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of bridge strain monitors sensing device, including bridge ontology (1) and bridge strain monitor sensor-based system, and feature exists
In：Support column (2) is installed in the middle part of the bridge ontology (1), the back side of the support column (2) is connected with support
Plate (3), the equal screw thread in the positive both sides of the support column (2) are socketed with lock-screw (4), the other end of the lock-screw (4)
Run through and extend to the back side of support column (2) and be socketed with the outer surface thread of support plate (3), at the top of the support plate (3)
Both sides offer grooving (5), and the inside of the grooving (5) is installed with vibrating string extensometer (6), the vibrating string type strain
The upper surface for counting (6) and the bottom connection of bridge ontology (1) touch, and the outer surface fixing sleeve of the support column (2) is equipped with fixed plate
(7), the both sides of the fixed plate (7) are installed with supporting rod (8), and the other end of the supporting rod (8) is installed with
The upper surface of backing plate (9), the backing plate (9) is flexibly connected with the bottom of support plate (3)；
The bridge strain monitoring sensor-based system includes that reception signal terminal, real-time data acquisition device and Industry Control calculate
Machine, the output end and input terminal of the reception signal terminal electrically connect with the input terminal of real-time data acquisition device and output end respectively
It connects, the input terminal and output end of the real-time data acquisition device electrically connect with industrial control computer output end and input terminal respectively
It connects, the output end of the real-time data acquisition device is electrically connected with mobile AM access module and data gateway, the mobile access mould
The output end of block is electrically connected with data conversion module, and the output end of the data conversion module is electrically connected with monitoring application clothes
The output end of business device, the monitoring application server is electrically connected with structural test database server, the bridge strain prison
That surveys sensor-based system is internally provided with interchanger, the input terminal and output end of the interchanger respectively with monitoring application server and knot
The output end and input terminal of structure experimental data base server are electrically connected, and the output end signal of the interchanger is connected with fire prevention
The output end signal of wall, the data gateway is connected with monitoring data Switching Module, the output of the monitoring data Switching Module
End is electrically connected with routing switch, and the output end of the routing switch and the input end signal of fire wall connect.
2. a kind of bridge strain according to claim 1 monitors sensing device, it is characterised in that：The support column (2)
Inside offers and the compatible threaded hole of lock-screw (4), and one end of the lock-screw (4) extends to the inside of threaded hole
And it is connect with the inner thread of threaded hole.
3. a kind of bridge strain according to claim 1 monitors sensing device, it is characterised in that：The reception signal terminal
Be internally provided with transducer signal amplifier, vibratory string strain transducer, fiber-optic grating sensor and camera monitoring device, the biography
The input terminal and output end of sensor signal amplifier are filled with vibratory string strain transducer, fiber-optic grating sensor and monitoring camera-shooting respectively
The output end set is electrically connected with input terminal.
4. a kind of bridge strain according to claim 3 monitors sensing device, it is characterised in that：The optical fiber grating sensing
Device is internally provided with multifiber cable connector, and the output end of the multifiber cable connector is electrically connected with fused fiber splice packet, institute
The output end signal for stating fused fiber splice packet is connected with fibre-optic terminus platform, and the output end signal of the fibre-optic terminus platform is connected with optical fiber
Raster processor.
5. a kind of monitoring method of bridge strain monitoring sensing device, it is characterised in that：The monitoring method is as follows：
The first step：The installation of vibrating string extensometer
Fixed plate (7) is welded on to the outer surface of support column (2) first, support plate (3) is then positioned over two backing plates (9)
Top, the front of support plate (3) and the back face of support column (2) are tactile at this time, and lock-screw (4) is then inserted into threaded hole
In, one end of lock-screw (4) extends to the back side of support column (2) and is socketed with the screw thread of support plate (3), support plate (3)
With firm, vibrating string extensometer (6) is then bonded in the inside of grooving (5), the pressure string at the top of vibrating string extensometer (6) with
The bottom connection of bridge ontology (1) touches, and installs；
Second step：The monitoring of adaptability to changes
Real-time data acquisition device is controlled by industrial control computer to be acquired the sensing data of reception signal terminal, is sensed
Data are divided into two parts, are transmitted separately in mobile AM access module and data gateway, via mobile AM access module treated position
It moves information and is transferred to monitoring application server, displacement information is transmitted to structural test database server by monitoring application server
Inside stored, interchanger respectively with monitoring application server and structural test database server carry out data exchange,
Another part sensing data is transferred to data gateway into row set, is then transmit to monitoring data Switching Module, and then routing turns
Parallel operation changes according to Network Topology for Real-Time, is in communication with each other transmission routing iinformation, passes through Route Selection using the routing iinformation received
Agreement calculates, and updates routing table, and routing switch carries out data exchange with fire wall, and security protection is carried out to the system.
6. a kind of monitoring method of bridge strain monitoring sensing device according to claim 5, it is characterised in that：Institute's rheme
Move amount of deflection, lateral displacement, length travel, horizontal displacement and the variation of the concrete cracks letter that information includes bridge ontology (1)
Breath, multiple vibration nodal points, ess-strain node and displacement node information are passed in monitoring application server, are resumed after progress
It is defeated.
7. a kind of monitoring method of bridge strain monitoring sensing device according to claim 5, it is characterised in that：The letter
The transducer signal amplifier in terminal number is received by vibratory string strain transducer, fiber-optic grating sensor and camera monitoring device institute
The frequency signal of transmission is amplified, then is transmitted it in real-time data acquisition device, in the fiber-optic grating sensor dependence
The fiber grating processor in portion carries out data processing to the strain of mechanism and temperature change, monitors its reflection wavelength, then transmits
To data gateway.
8. a kind of monitoring method of bridge strain monitoring sensing device according to claim 5, it is characterised in that：It is described to shake
What string formula strain gauge provided is vibration frequency, needs to be converted into stress value, data transfer device is as follows：
(1) dependent variable method for computing data
U ε=△ F/k, △ F=F02-F12
In formula:U ε are dependent variable
△ F are the variable quantity of the strain gauge output valve that measures in real time relative to a reference value, unit kHz2；
K is the calibration coefficient of vibrating string extensometer；
F1 is the real-time measurement values of vibrating string extensometer；
F0 is the initial quasi- value of vibrating string extensometer；
(2) pressure value calculating method
Pm=u ε/A
A is vibrating string extensometer per the corresponding dependent variables of kN (u ε).
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| CN201810696348.7A CN108444435A (en) | 2018-06-29 | 2018-06-29 | A kind of bridge strain monitoring sensing device and its monitoring method |
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| CN201810696348.7A CN108444435A (en) | 2018-06-29 | 2018-06-29 | A kind of bridge strain monitoring sensing device and its monitoring method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565548A (en) * | 2019-10-17 | 2019-12-13 | 北京市市政四建设工程有限责任公司 | method for monitoring supporting and reinforcing construction of inclined leg rigid frame bridge |
| CN110631522A (en) * | 2019-11-04 | 2019-12-31 | 中交一公局土木工程建筑研究院有限公司 | String type strain gauge for concrete injection |
| CN110779482A (en) * | 2019-08-19 | 2020-02-11 | 杭州鲁尔物联科技有限公司 | Automatic monitoring system and method for horizontal dislocation and deformation of shield tunnel segment |
| CN110906877A (en) * | 2019-11-15 | 2020-03-24 | 苏州锦航工程技术服务有限公司 | Bridge monitoring device and monitoring method |
| CN111007113A (en) * | 2019-11-22 | 2020-04-14 | 湖南城市学院 | Optimized design method for metal oxide semiconductor gas sensor structure |
| CN111442748A (en) * | 2020-04-13 | 2020-07-24 | 同济大学 | Distributed wireless network data acquisition system for multi-type vibrating wire strain gauge |
| CN111780792A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Method for mounting measuring piece for bridge detection |
| CN113008177A (en) * | 2021-02-22 | 2021-06-22 | 扬州胜宁信息技术有限公司 | Strain combined testing device and method based on vibrating wire strain gauge and bridge strain gauge |
| CN117405296A (en) * | 2023-12-15 | 2024-01-16 | 康利源科技（天津）股份有限公司 | LNG marine anti-moving block balance performance monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110779482A (en) * | 2019-08-19 | 2020-02-11 | 杭州鲁尔物联科技有限公司 | Automatic monitoring system and method for horizontal dislocation and deformation of shield tunnel segment |
| CN110565548B (en) * | 2019-10-17 | 2020-06-26 | 北京市市政四建设工程有限责任公司 | Method for monitoring supporting and reinforcing construction of inclined leg rigid frame bridge |
| CN110565548A (en) * | 2019-10-17 | 2019-12-13 | 北京市市政四建设工程有限责任公司 | method for monitoring supporting and reinforcing construction of inclined leg rigid frame bridge |
| CN110631522A (en) * | 2019-11-04 | 2019-12-31 | 中交一公局土木工程建筑研究院有限公司 | String type strain gauge for concrete injection |
| CN110631522B (en) * | 2019-11-04 | 2021-04-13 | 中交一公局土木工程建筑研究院有限公司 | String type strain gauge for concrete injection |
| CN110906877A (en) * | 2019-11-15 | 2020-03-24 | 苏州锦航工程技术服务有限公司 | Bridge monitoring device and monitoring method |
| CN111007113B (en) * | 2019-11-22 | 2020-09-01 | 湖南城市学院 | Optimized design method for metal oxide semiconductor gas sensor structure |
| CN111007113A (en) * | 2019-11-22 | 2020-04-14 | 湖南城市学院 | Optimized design method for metal oxide semiconductor gas sensor structure |
| CN111442748A (en) * | 2020-04-13 | 2020-07-24 | 同济大学 | Distributed wireless network data acquisition system for multi-type vibrating wire strain gauge |
| CN111780792A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Method for mounting measuring piece for bridge detection |
| CN113008177A (en) * | 2021-02-22 | 2021-06-22 | 扬州胜宁信息技术有限公司 | Strain combined testing device and method based on vibrating wire strain gauge and bridge strain gauge |
| CN113008177B (en) * | 2021-02-22 | 2023-12-08 | 安徽环通工程试验检测有限公司 | Strain joint testing device and method based on vibrating wire strain gauge and bridge strain gauge |
| CN117405296A (en) * | 2023-12-15 | 2024-01-16 | 康利源科技（天津）股份有限公司 | LNG marine anti-moving block balance performance monitoring system |
| CN117405296B (en) * | 2023-12-15 | 2024-03-01 | 康利源科技（天津）股份有限公司 | LNG marine anti-moving block balance performance monitoring system |
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