CN109253794A - A kind of synthesis bridge monitoring system and bridge structure based on mems sensor - Google Patents
A kind of synthesis bridge monitoring system and bridge structure based on mems sensor Download PDFInfo
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- CN109253794A CN109253794A CN201811195241.0A CN201811195241A CN109253794A CN 109253794 A CN109253794 A CN 109253794A CN 201811195241 A CN201811195241 A CN 201811195241A CN 109253794 A CN109253794 A CN 109253794A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 137
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
- G01H1/14—Frequency
Abstract
The invention discloses a kind of synthesis bridge monitoring systems based on mems sensor, it is electrically connected including MEMS acceleration sensor module, frequency-selecting module, analog-to-digital conversion module and data processing module, and between analog-to-digital conversion group and the data processing mould group by system bus；It further include foundation pit structure, the foundation pit structure includes load-bearing Ji Liang, contact joist lifts platform with connection above structure, main monitoring platform is equipped with by chimeric column on the inside of platform in described lift, and the secondary monitoring platform in the junction of each chimeric column, the MEMS acceleration sensor module for receiving three-dimensional shock wave signal is provided on main monitoring platform and time monitoring platform, monitoring system is applied by integrated, it can be realized multi-faceted monitoring, on the basis of whole monitoring, monitoring device also secondary by setting, achieve the purpose that differentiation monitoring, the result of differentiation vibration is more accurately provided, the vibration that can be avoided normal range (NR) enters monitoring system.
Description
Technical field
The present invention relates to bridge monitoring technical field, specially a kind of synthesis bridge monitoring system based on mems sensor
And bridge structure.
Background technique
With the continuous development of China's economy and society, the construction of domestic infrastructure is constantly promoted, as application foundation
The bridge of facility nuclear structure, application be also constantly promoting, the quantity of science of bridge building be also constantly increasing, and
The construction span and spandrel girder of bridge are also constantly to improve, due to the complexity that bridge uses, to the standard of bridge specific structure
Really monitoring causes very big challenge.
Traditional displacement or vibration monitoring is the mode of fixed point mark and regular visit, but the measurement method exists
Accidentalia it is more, and be not easy control, generally require technical staff or mapping worker to scene and carry out manual measurement,
It is not only cumbersome, inefficiency, but also can be shifted due to fixed point standard influence mapping structure, most importantly its survey
Measuring result is not real-time synchronization, or even can also be due to certain characteristics of bridge itself, prevent final structure is from being measured
Out.Therefore, conventional monitoring methods have been unable to satisfy demand of the modern bridge to automation, information-based monitoring and measuring technology.
With the development of computer technology, the following monitoring system is inevitable to be developed to automation, intelligentized direction, with more
Kind analysis software carries out back analysis prediction to the measured data of bridge, realizes " safety monitoring-real-time monitoring-rapid feedback-construction
The Efficient Cycle of control-online management ", researches and develops hardware with high accuracy, and exploitation bridge monitoring information management, forecasting system are soft
Part, building bridge construction work information share cloud platform, are the roads after all of bridge monitoring technology development and information-aided construction.
At abroad, used the automatic monitored control system being made of monitoring robot and a series of sensor, to bridge into
Go monitoring, but the monitoring system still has this problem, is mainly shown as:
1, monitoring system or monitoring range are narrow or be exactly that the precision that monitors is inadequate, can not be monitored in main body and
Equalization point is found between local accuracy, can not coordinate the contradictory relation of these two aspects；
2, measurement vibration or displacement data are inaccurate, for whole measurement, the measurement that finally obtains
Data can not accurately navigate to generation point, this is very unfavorable for the analysis of data and early warning；
3, the signal in bridge tolerance range can not be given and shields, often all information is collected,
The data being collected into be often it is lengthy and jumbled and numerous, be not easy to subsequent data processing and analysis, for follow-up work, will
It will cause great inconvenience.
Summary of the invention
In order to overcome the shortcomings of that prior art, the present invention provide a kind of synthesis bridge monitoring based on mems sensor
System and bridge structure apply monitoring system provided in the present invention by integrated, can be realized multi-faceted monitoring, guarantee prison
Measured data as a result, on the basis of whole monitoring, monitoring device also secondary by setting achievees the purpose that differentiation monitoring,
It more accurately provides that differentiation shakes as a result, it is possible to which the vibration of normal range (NR) is avoided to enter monitoring system, can effectively solve
The problem of certainly background technique proposes.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of bridge structure of the synthesis bridge monitoring system based on mems sensor, including load-bearing Ji Liang and contact support
Beam is connected between the load-bearing Ji Liang and contact joist by being located at the platform of lifting at both ends, is lifted on the inside of platform described by embedding
Zygostyle is equipped with main monitoring platform；
The main monitoring platform include two pieces of ends respectively be located at the chimeric column in top and bottom be fixedly connected it is I-shaped
Mandril is fixedly connected by T-bar between the both ends of I-shaped mandril, and the both ends of the I-shaped mandril are equipped with limit
Lantern ring, and connected between two T-bars by the hinge seat being fixedly mounted on I-shaped mandril, the surface of the hinge seat
Equipped with vertical measuring rod, the vertical measuring rod is located at the center of I-shaped mandril, and in the remittance of hinge seat and vertical measuring rod
Measurement chassis is equipped at conjunction, the MEMS being equipped on the measurement chassis for receiving tri- direction shock wave signals of X, Y, Z adds
Acceleration sensor module, the top of the T-bar are contacted with the fitting of the end of I-shaped mandril.
As a preferred technical solution of the present invention, the I-shaped mandril includes the center calibrating stem of vertical setting,
The hinge seat is located at the bottom end of center calibrating stem, and at center, the both ends of calibrating stem, which are separately installed with, lifts beam, described to lift beam
Inside be fixedly installed with horizontal alignment bar, be respectively equipped with plumb line and level in the center calibrating stem and horizontal alignment bar
Instrument.
It further include the secondary monitoring station for being located at the junction of each chimeric column as a preferred technical solution of the present invention
Platform, the secondary monitoring platform include the T-type bracket being fixedly mounted on chimeric column, and three blocks of water are successively arranged on the T-type bracket
Flat support plate is connected between two pieces of horizontal support plates for being located at top by laminated rubber bearing, and in the laminated rubber bearing
Inside is fixedly installed with horizontal shelf, and secondary level measurement plate is equipped between adjacent horizontal shelf.
As a preferred technical solution of the present invention, secondary level measurement plate center is equipped with for receiving X, Y
The MEMS acceleration sensor module of both direction shock wave signal passes through spring contraction on the horizontal support plate for being located at top
Bar is equipped with contact plate, and the MEMS acceleration sensing for receiving Z-direction shock wave signal is equipped on the spring contraction bar
Device module.
In addition, the present invention also provides a kind of synthesis bridge monitoring systems based on mems sensor, comprising:
MEMS acceleration sensor module, for receiving the shock wave signal in tri- directions X, Y, Z；
Frequency-selecting module, the frequency-selecting module and three axial MEMS acceleration sensor modules are electrically connected,
For by received shock wave signal decomposition at required frequency signal；
Analog-to-digital conversion module, the analog-to-digital conversion module and the frequency-selecting module are electrically connected, for after decomposing
Required frequency signal carry out analog-to-digital conversion obtain digital signal；
Data processing module, data processing module and the analog-to-digital conversion module are electrically connected, for obtaining according to after conversion
To digital signal carry out informix processing and result be output to server completing receiving, storage and place to monitoring data
The functions such as reason；
It is electrically connected between the analog-to-digital conversion group and the data processing mould group by system bus.
As a preferred technical solution of the present invention, the specific installation method of mems acceleration sensor module are as follows:
Step 100 carries out vertical and horizontal direction calibration to monitoring platform；
On monitoring platform with the principle at " center spread edge concentrate " mems acceleration transducer is arranged in step 200, and
And buffer liner in a ring is equipped in the installation place of each mems acceleration transducer.
As a preferred technical solution of the present invention, in step 200, center spreads edge and concentrates specifically: with prison
The center of survey station platform be measurement basic point, using shared by 10 times of mems acceleration transducers measure position length as radius centered on area
Domain, peripheral region are then fringe region, are uniformly arranged in central area, and density of setting is that 3~5/5 times mems acceleration pass
The length of the shared measurement position of sensor, and edge region moves towards setting several columns mems acceleration sensing according to line of demarcation
Device, distribution density are the length of the shared measurement position of 1~3/5 times mems acceleration transducers.
As a preferred technical solution of the present invention, the frequency-selecting module further includes each frequency band processing unit, is used
Handled to obtain very broadband shock detection result in each frequency band is monitored desired signal.
As a preferred technical solution of the present invention, analog-to-digital conversion module includes: A/D conversion module at least all the way,
For carrying out analog-to-digital conversion to desired signal；Shock wave collection analysis applying unit, for realizing different vibration monitoring modes
And its selection, and then different monitoring functions.
As a preferred technical solution of the present invention, data processing module includes: that server completes deformation monitoring online
Reception, storage, processing, analysis, alarm, the visualization of data show function.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention utilizes MEMS acceleration transducer technology, frequency distribution, computer, communication, network, automatic control
Etc. technologies, pit retaining monitoring system is brought into unified platform, realize information integration, formed using information integration as core, collection
Data acquisition, monitoring, control, management, early warning are in networking, informationization and the intelligentized integrated system of one.Its purpose purport
For various vibration monitoring data, various monitoring objectives provide the integrated monitor platform of high automation, high reliability, and provide one
Open, enhanced scalability the information integration architectural framework for having function dynamic configuration, flexibly recombinating characteristic of kind, realizes function
The separation of separation, data and the application that can be used with the separation, information collection and information of equipment, thus deactivation system function with set
Standby tightly coupled binding relationship is eliminated the contradiction between the survey shake expanding of system function currently got worse and global optimization, is reached
The unified target of each subsystem of vibration monitoring net；
(2) the advantages of bridge, is, applies monitoring system provided in the present invention by integrated first, can be realized more
The monitoring in orientation guarantees the result of monitoring data；Secondly, on the basis of whole monitoring, monitoring dress also secondary by setting
It sets, achievees the purpose that differentiation monitoring, the advantages of monitoring method, is, it on the one hand can guarantee monitoring effect to greatest extent,
Another aspect is monitored by secondary, the monitoring data in each orientation can be accurately obtained, to more accurately mention
For the result of differentiation vibration；Third, the monitoring of structures of the bridge are that is, the quality of bridge based between load-carrying members
Still it is undertaken by load-carrying members, and when the stress or moment vibration outside load-carrying members receiving occurs, vibration signal will
At the first time by the monitoring system acquisition, to obtain monitoring result on the whole accurately, in real time, and work as vibration signal mistake
Afterwards, it can quickly restore to original position, remain on optimal monitoring effect.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the present invention time monitoring platform structural schematic diagram；
Fig. 3 is present invention monitoring system structure diagram；
Figure label: 1- load-bearing Ji Liang；2- contacts joist；3- lifts platform；4- is fitted into column；The main monitoring platform of 5-；6- I-shaped
Type mandril；7- monitoring platform；
501-T type bar；502- limits lantern ring；The vertical measuring rod of 503-；504- measures chassis；
601- hinge seat；The center 602- calibrating stem；603- lifts beam；604- horizontal alignment bar；
701-T type bracket；The horizontal support plate of 702-；703- laminated rubber bearing；704- horizontal shelf；705- secondary level is surveyed
Template；706- spring contraction bar；707- contact plate；708- jacking post；709- righting rod.
Specific embodiment
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 description, 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.
As depicted in figs. 1 and 2, the present invention provides a kind of bridges of synthesis bridge monitoring system based on mems sensor
Structure, including load-bearing base beam 1 and contact joist 2, by being located at lifting for both ends between the load-bearing base beam 1 and contact joist 2
Platform 3 connects, and for the weight of bridge itself, still there is load-carrying members support, passes through the chimeric peace of column 4 in 3 inside of platform of lifting
Equipped with main monitoring platform 5, monitoring of structures setting is being lifted between platform 3, the advantage that be, model is related to for bridge itself
Interior deformation or vibration are enclosed, the self structure of bridge can be avoided the vibration signal and enter monitoring system, to avoid a system
Unnecessary calculating and early warning are arranged, and when being more than the vibration or deformation of normal scope, will set out monitoring system at the first time
System, and the information is recorded.
The main monitoring platform 5 includes two pieces of ends I-shaped that column 4 chimeric with top and bottom are located at is fixedly connected respectively
Type mandril 6, the basic load structure of platform 5 is monitored based on I-shaped mandril 6, and the electronic system of the monitoring of structures exists setting
On I-shaped mandril 6, in addition, I-shaped mandril 6 is also the transfer device of main vibration signal, the two of I-shaped mandril 6
It is fixedly connected by T-bar 501 between end, one supporting role is played by T-bar 501 in the two sides of I-shaped mandril 6,
The stability of main monitoring platform 5 is improved, and is equipped with limit lantern ring 502 at the both ends of I-shaped mandril 6, limits lantern ring 502
Fixation device between bridge main body load-carrying members is connect, and is lifted between platform 3, is reached so that entire monitoring system is fixed on
Optimal monitoring state, and connected between two T-bars 501 by the hinge seat 601 being fixedly mounted on I-shaped mandril 6, T
Type bar 501 is activity installation by the connection of hinge seat 601, can it is more accurate, timely transmit deformation or vibration signal.
Therefore, based on above-mentioned, it is equipped with vertical measuring rod 503 in the surface of hinge seat 601, and vertical measuring rod 503 is set
At the center of I-shaped mandril 6, all deformation and vibration signal on the plane of symmetry can be accurately obtained, and in hinge seat 601
It is equipped with measurement chassis 504 with the meet of vertical measuring rod 503, is equipped on the measurement chassis 504 for receiving X, Y, Z tri-
The MEMS acceleration sensor module of a direction shock wave signal can quickly obtain three-dimensional on main monitoring platform 5
Deformation and vibration on upper any direction, in order to preferably transmit vibrating effect, the top of T-bar 501 and I-shaped mandril 6
End fitting contact.
As the preferred of present embodiment, the I-shaped mandril 6 includes the center calibrating stem 602 of vertical setting, described
Hinge seat 601 is located at the bottom end of center calibrating stem 602, and at center, the both ends of calibrating stem 602, which are separately installed with, lifts beam 603, institute
It states and lifts the inside of beam 603 and be fixedly installed with horizontal alignment bar 604, in the center calibrating stem 602 and horizontal alignment bar 604
It is respectively equipped with plumb line and level meter, by the differentiation of I-shaped 6 structure of mandril, installation personnel can quickly be helped to position water
Prosposition is set and vertical position, reaches optimal monitoring state.
In above scheme, being only includes main monitoring platform 5, effect be obtained by monitoring on the whole one compared with
For wide in range monitoring effect, in addition, the present invention in order to improve specific monitoring effect, on the basis of whole monitoring, also passes through
Secondary monitoring device is set, achievees the purpose that differentiation monitoring, is using the advantages of monitoring method, it on the one hand can be maximum
The guarantee monitoring effect of limit, another aspect are monitored by secondary, and the monitoring number in each orientation can be accurately obtained
According to, thus more accurately provide differentiation vibration as a result, its specific feature is as described below.
It further include the secondary monitoring platform 7 for being located at the junction of each chimeric column 4, wherein secondary monitoring platform 7 in the present invention
Quantity match with the quantity of chimeric column 4, i.e., it is secondary monitoring platform 7 be in order to real-time monitoring each be fitted into column 4 state
Variation.
Secondary monitoring platform 7 includes the T-type bracket 701 being fixedly mounted on chimeric column 4, is successively set on the T-type bracket 701
There are three pieces of horizontal support plates 702, is connected between two pieces of horizontal support plates 702 for being located at top by laminated rubber bearing 703, it is board-like
Rubber support 703 can overcome the pulling force of vertical load suffered by total system and horizontal direction, be able to maintain at whole system
Under conditions of stress equalization, specific monitoring environment ensure that, and be fixedly installed on the inside of the laminated rubber bearing 703
Horizontal shelf 704 is equipped with secondary level measurement plate 705 between adjacent horizontal shelf 704, two pieces of horizontal loads positioned at bottom
It is connected between plate 702 by several equally distributed jacking posts 708, jacking post 708 is then to adapt to different chimeric columns 4
Difference in height, gives one good conformity ability of the system and adjustability, and 707 side of contact plate passes through righting rod
709 connect with the horizontal support plate 702 for being located at bottommost.
Among the above, it is preferred that 705 center of secondary level measurement plate is equipped with for receiving X, Y both direction
The MEMS acceleration sensor module of shock wave signal passes through spring contraction bar 706 on the horizontal support plate 702 for being located at top
Contact plate 707 is installed, the MEMS acceleration for receiving Z-direction shock wave signal is installed on the spring contraction bar 706
Sensor module can quickly obtain deformation and vibration on three-dimensional on any direction, in order to preferably transmit vibration
Effect.
Based on above-mentioned, the advantages of bridge, is, applies monitoring system provided in the present invention by integrated first, can
It realizes multi-faceted monitoring, guarantees the result of monitoring data；Secondly, also passing through setting secondary on the basis of whole monitoring
The advantages of monitoring device achievees the purpose that differentiation monitors, the monitoring method is, on the one hand can guarantee to monitor to greatest extent
Effect, another aspect are monitored by secondary, and the monitoring data in each orientation can be accurately obtained, thus more accurate
Offer differentiation vibration result；Third, the monitoring of structures of the bridge are that is, the bridges based between load-carrying members
Quality is still undertaken by load-carrying members, and when the stress or moment vibration outside load-carrying members receiving occurs, vibration signal
It will be at the first time by the monitoring system acquisition, to obtain monitoring result on the whole accurately, in real time, and when vibration letter
After number, it can quickly restore to original position, remain on optimal monitoring effect.
In addition, as shown in figure 3, the present invention also provides a kind of synthesis pit retaining monitoring system based on mems sensor,
Include:
MEMS acceleration sensor module, for receiving the shock wave signal in tri- directions X, Y, Z；
Frequency-selecting module, the frequency-selecting module and three axial MEMS acceleration sensor modules are electrically connected,
For by received shock wave signal decomposition at required frequency signal；
Analog-to-digital conversion module, the analog-to-digital conversion module and the frequency-selecting module are electrically connected, for after decomposing
Required frequency signal carry out analog-to-digital conversion obtain digital signal；
Data processing module, data processing module and the analog-to-digital conversion module are electrically connected, for obtaining according to after conversion
To digital signal carry out informix processing and result be output to server completing receiving, storage and place to monitoring data
The functions such as reason；
It is electrically connected between the analog-to-digital conversion group and the data processing mould group by system bus.
In above-mentioned steps, the specific installation method of mems acceleration sensor module are as follows:
Step 100 carries out vertical and horizontal direction calibration to monitoring platform；
On monitoring platform with the principle at " center spread edge concentrate " mems acceleration transducer is arranged in step 200, and
And buffer liner in a ring is equipped in the installation place of each mems acceleration transducer.
It is the receipts dispersed as far as possible in the effect for arranging mems acceleration sensor module by this method among the above
Collect data, and since the data of central area are relatively stable, often only vertical variation, and about shearing force for center
The influence in region is limited, and therefore, is guaranteeing also to need to consider asking for data processing and deployment cost while monitoring quality
Topic, it is necessary to consider to reduce the arrangement of number of sensors according to the actual situation, and be based on mentioned above principle, effect is that two sides
Face:
First, by the setting of different zones, preferable quality can be also kept while guaranteeing data harvesting, so that
Vertical variations data and cross directional variations data can be acquired effectively, to obtain the number of more complete three axis direction
According to；
Second, it is contemplated that the principle that different zones data generate focuses on vertical variation in central area, can obtain
More preferably collection effect, and the influence of shearing displacement can be reduced, in addition, horizontally, since edge is by being influenced more
Strongly, and in different positions, not identical by being influenced, therefore, concentrated according to the edge of principle setting,
It is edge region in matter, is uniformly distributed highdensity sensor, obtains complete data.
It spreads edge at center among the above to concentrate specifically: to monitor the center of platform for measurement basic point, with 10 times
The length of the shared measurement position of mems acceleration transducer is region centered on radius, and peripheral region is then fringe region, in
Heart district domain is uniformly arranged, and density of setting is the length of the shared measurement position of 3~5/5 times mems acceleration transducers, and
Fringe region moves towards setting several columns mems acceleration transducer according to line of demarcation, and distribution density is that 1~3/5 times mems add
The length of the shared measurement position of velocity sensor.
Among the above, MEMS acceleration sensor module, including a 3 axis MEMS acceleration transducer, for receiving shake
Dynamic wave signal.Integral device uses MEMS technology, and MEMS sensor chip is by micron-sized silicon chip three-dimension process technology system
Made of making, miniature or Miniature Sensor.MEMS technology is widely used in industry, information, national defence, medical treatment, automobile and other industries, most often
Such as smart phone, vehicle impact air bag.After MEMS chip large-scale production, cost is relatively low, and stability is high, this is to vibration
Vibration monitoring be undoubtedly a huge development opportunity, if being laid with the equipment on a large scale, more richer shakes will be obtained
Dynamic monitoring record provides some necessary data for research, is applied in pit retaining monitoring system, has huge cost advantage.
The frequency-selecting module includes: wide frequency band measurement unit, for that will receive the shock wave signal decomposition come into width
Monitoring signals needed for frequency band；Short cycle monitoring unit is monitored for that will receive the shock wave signal decomposition come at needed for short cycle
Signal.
The frequency-selecting module further includes each frequency band processing unit, for monitoring each frequency band at desired signal
Reason obtains very broadband shock detection result.
Processing module is connect with analog-to-digital conversion module, for being carried out at informix according to the digital signal obtained after conversion
It manages and result is output to cloud platform, the secondary data memory technology through central processing unit and based on SDRAM, FLASH
It realizes, correspondingly, the analog-to-digital conversion module in the present embodiment includes: A/D conversion module at least all the way, for desired signal
Carry out analog-to-digital conversion；Shock wave collection analysis applying unit, the shock wave collection analysis being integrated in embedded OS are answered
Each shocking waveshape is selected with unit, sampling, quantization, coding/decoding, calculation process and the transformation of information is completed, is used for
Realize different vibration monitoring mode and its selection, and then different monitoring functions.
Accelerometer data compares concussion, containing more high fdrequency component, has drift later for a long time, it is therefore desirable to logarithm
According to being filtered.One Jie's low-pass filtering, the algorithmic formula of low-pass filtering are used to data are as follows:
Y (n)=α X (n)+(1- α) Y (n-1)
In formula: α is filter factor；
X (n) is this sampled value；
Y (n-1) is last time filtering output value；
Y (n) is filtering output value；
First-order low-pass wave method is weighted using this sampled value with last time filtering output value, and effective filter value is obtained,
So that output has feedback effect to input.
Data processing module includes: reception, storage, processing, the analysis, report that server completes deformation measurement data online
Alert, visualization shows function.
The present invention utilizes the skills such as MEMS acceleration transducer technology, frequency distribution, computer, communication, network, automatic control
Art is brought pit retaining monitoring system into unified platform, realizes information integration, is formed using information integration as core, collects data
Acquisition, monitoring, control, management, early warning are in networking, informationization and the intelligentized integrated system of one.Its purpose it is intended that
Various vibration monitoring data, various monitoring objectives provide the integrated monitor platform of high automation, high reliability, and provide one kind and open
It is putting formula, enhanced scalability have function dynamic configuration, flexibly recombination characteristic information integration architectural framework, realize function with
The separation of separation, data and application that separation, information collection and the information of equipment use, so that deactivation system function and equipment are tight
The binding relationship of coupling eliminates the contradiction between the survey shake expanding of system function currently got worse and global optimization, reaches vibration
The unified target of each subsystem of monitoring net.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of synthesis bridge monitoring system based on mems sensor characterized by comprising
It is mounted on the mems acceleration sensor module that bridge is mutually perpendicular in axial direction, for receiving tri- directions bridge X, Y, Z
Shock wave signal；
Frequency-selecting module, the frequency-selecting module and three axial MEMS acceleration sensor modules are electrically connected, and are used for
By received shock wave signal decomposition at required frequency signal；
Analog-to-digital conversion module, the analog-to-digital conversion module and the frequency-selecting module are electrically connected, for the institute after decomposing
It needs frequency signal to carry out analog-to-digital conversion and obtains digital signal；
Data processing module, data processing module and the analog-to-digital conversion module be electrically connected, for according to obtaining after conversion
Digital signal carries out informix processing and result is output to receiving, storage and processing etc. of the server completion to monitoring data
Function；
It is electrically connected between the analog-to-digital conversion group and the data processing mould group by system bus.
2. a kind of synthesis bridge monitoring system based on mems sensor according to claim 1, which is characterized in that mems
The specific installation method of sensor module are as follows:
Step 100 carries out vertical and horizontal direction calibration to monitoring platform；
With the principle at " center spread edge concentrate " mems acceleration transducer is arranged on monitoring platform in step 200, and
The installation place of each mems acceleration transducer is equipped with buffer liner in a ring.
3. a kind of synthesis bridge monitoring system based on mems sensor according to claim 2, which is characterized in that in step
In rapid 200, center spreads edge and concentrates specifically: to monitor the center of platform as measurement basic point, is passed with 10 times of mems acceleration
The length of the shared measurement position of sensor is region centered on radius, and peripheral region is then fringe region, is uniformly set in central area
Set, and density of setting is the length of the shared measurement position of 3~5/5 times mems acceleration transducers, and edge region according to
Setting several columns mems acceleration transducer is moved towards in line of demarcation, and distribution density is 1~3/5 times mems acceleration transducer institutes
Account for the length of measurement position.
4. a kind of synthesis bridge monitoring system based on mems sensor according to claim 1, which is characterized in that described
Frequency-selecting module further includes each frequency band processing unit, for being handled to obtain very wideband for each frequency band monitoring desired signal
Band shock detection result.
5. a kind of synthesis bridge monitoring system based on mems sensor according to claim 1, which is characterized in that modulus
Conversion module includes: A/D conversion module at least all the way, for carrying out analog-to-digital conversion to desired signal；Shock wave collection analysis
Applying unit, for realizing different vibration monitoring modes and its selection, and then different monitoring functions.
6. a kind of synthesis bridge monitoring system based on mems sensor according to claim 1, which is characterized in that data
Processing module includes: that server is completed reception, storage, processing, analysis, alarm, the visualization of deformation measurement data online and showed
Function.
7. a kind of bridge structure, including load-bearing Ji Liang (1) and contact joist (2), the load-bearing Ji Liang (1) and contact joist (2)
Between by being located at the lifting of both ends platform (3) connection, it is characterised in that: pass through chimeric column (4) on the inside of platform (3) in described lift and pacify
Equipped with main monitoring platform (5)；
Main monitoring platform (5) includes two pieces of ends I-shaped that column (4) chimeric with top and bottom are located at is fixedly connected respectively
Type mandril (6) is fixedly connected by T-bar (501), the I-shaped mandril (6) between the both ends of I-shaped mandril (6)
Both ends be equipped with limit lantern ring (502), and by being fixedly mounted on I-shaped mandril (6) between two T-bars (501)
The surface of hinge seat (601) connection, the hinge seat (601) is equipped with vertical measuring rod (503), the vertical measuring rod
(503) it is located at the center of I-shaped mandril (6), and is equipped with measurement in the meet of hinge seat (601) and vertical measuring rod (503)
Chassis (504), the MEMS being equipped on chassis (504) for receiving tri- direction shock wave signals of X, Y, Z that measures accelerate
Sensor module is spent, the top of the T-bar (501) is contacted with the fitting of the end of I-shaped mandril (6).
8. a kind of bridge structure according to claim 7, it is characterised in that: the I-shaped mandril (6) includes vertical sets
The center calibrating stem (602) set, the hinge seat (601) is located at the bottom end of center calibrating stem (602), in center calibrating stem
(602) both ends, which are separately installed with, lifts beam (603), and the inside for lifting beam is fixedly installed with horizontal alignment bar (604),
Plumb line and level meter are respectively equipped in the center calibrating stem (602) and horizontal alignment bar (604).
9. a kind of bridge structure according to claim 7, it is characterised in that: further include the company for being located at each chimeric column (4)
The secondary monitoring platform (7) at place is connect, the secondary monitoring platform (7) includes the T-type bracket (701) being fixedly mounted on chimeric column (4),
Three pieces of horizontal support plates (702) are successively arranged on the T-type bracket (701), between two pieces of horizontal support plates (702) for being located at top
It is connected by laminated rubber bearing (703), and is fixedly installed with horizontal shelf on the inside of the laminated rubber bearing (703)
(704), secondary level measurement plate (705) are equipped between adjacent horizontal shelf (704).
10. a kind of bridge structure according to claim 9, it is characterised in that: secondary level measurement plate (705) center
MEMS acceleration sensor module for receiving X, Y both direction shock wave signal is installed, in the level for being located at top
It is equipped with contact plate (707), is installed on the spring contraction bar (706) useful by spring contraction bar (706) on support plate (702)
In the MEMS acceleration sensor module for receiving Z-direction shock wave signal.
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| CN201811195241.0A CN109253794A (en) | 2018-10-15 | 2018-10-15 | A kind of synthesis bridge monitoring system and bridge structure based on mems sensor |
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| CN201811195241.0A CN109253794A (en) | 2018-10-15 | 2018-10-15 | A kind of synthesis bridge monitoring system and bridge structure based on mems sensor |
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