CN201876256U - Optical fiber monitoring system for high-grade road soft foundation - Google Patents
Optical fiber monitoring system for high-grade road soft foundation Download PDFInfo
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- CN201876256U CN201876256U CN2010205460704U CN201020546070U CN201876256U CN 201876256 U CN201876256 U CN 201876256U CN 2010205460704 U CN2010205460704 U CN 2010205460704U CN 201020546070 U CN201020546070 U CN 201020546070U CN 201876256 U CN201876256 U CN 201876256U
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Abstract
The utility model relates to a method for processing and transmitting construction monitoring information of a high-grade road soft foundation, in particular to a method and system for monitoring the road soft foundation by utilizing an optical fiber bragg grating sensor. The utility model provides an optical fiber monitoring system for the high-grade road soft foundation, which comprises the optical fiber bragg grating sensor buried in the soft foundation and an optical fiber bragg grating demodulator for transmitting the acquired data to the soft foundation through optical fiber; the optical fiber bragg grating demodulator is used for transmitting a signal to the optical fiber monitoring system through a network; and the optical fiber monitoring system is used for processing the data and displaying the processed data to a user through a display. According to the utility model, the monitoring data of the soft foundation can be conveniently searched and operated to form various graphs and curves required by the user and complete or partial conditions for processing the soft foundation can be reflected in real time.
Description
Technical field
The utility model relates to soft basic construction monitoring information processing of a kind of high-grade highway and transfer approach, a kind of specifically method and system that utilizes Fibre Optical Sensor monitoring highway soft foundation.
Technical background
The deformation of soft soil foundation is two critical problems of soft basic road construction work with stablizing, and also is the theme of treatment of soft foundation.They during with the stress, strain of soil and construction rate of loading confidential relation is arranged.In order to ensure the safety and stability of roadbed in work progress and accurate prediction settlement after construction, should carry out soft base monitoring at selected representative special cross section of engineering and general section completely, the stress and strain coefficient of quantitative measurement ground, so that control loaded speed dynamically, monitor the construction that and guides all fronts embankment to fill, and fixed situation and effective consolidated depth stockpile for controlling all kinds of soil layers.Therefore soft base being monitored is a requisite key job.
China's highway soft foundation is monitored means such as current main employing flush type sedimentation mark, tiltmeter, ventage piezometer, these method automaticities and instrument reliability is low, data are untimely, measuring accuracy is low, influence the effect of soft base monitoring and the prediction of settlement after construction, be unfavorable for information-aided construction.
Therefore the utility model adopts intelligent fiber grating sensing technology, mechanism to intelligent optical fiber on-line monitoring high-grade highway deep soft foundation is analyzed and experimental study, setting up optical fiber sensing technology and network technology is the novel soft basic on-line monitoring system of one, realizing continuously, in real time development and change processes such as pore pressure dissipation, sedimentation and deformation, water level, temperature variations and soil body discharging consolidation in the whole treatment of soft foundation process to be carried out remote dynamic monitoring, thereby realize the intelligent and information-based of observation process behind soft base construction and the worker.
The utility model content
The purpose of this utility model is to provide a kind of high-grade highway soft base optical fiber monitoring system, this monitoring system reads the working-yard in real time and detects data, through calculating various monitoring parameters such as comprising subgrade settlement, water pressure and temperature, be shown to each supervisor, monitoring unit and owner with detecting data and monitoring parameter mode with graphical interface of user, each unit of taking part in building can at any time monitor the site operation situation, account of the history is inquired about, in time grasp up-to-date soft base monitoring information; Utilize the detection data to handle various forms, figure that the formation project is required; Simultaneously,, in time understand the construction progress situation, guarantee the engineering total quality by analysis and inquiry to monitoring parameter.
The purpose of this utility model is achieved through the following technical solutions:
The soft base optical fiber monitoring system of a kind of high-grade highway, described monitoring system comprises, is embedded in the fiber-optic grating sensor in the soft base, gives soft base optical fiber grating demodulation instrument with the data of gathering by Optical Fiber Transmission; This fiber Bragg grating (FBG) demodulator is given described fiber-optic monitoring system with signal by Network Transmission; The fiber-optic monitoring system handles data; Data processed is shown to the user by display.
Described sensor is the sedimentation fiber-optic grating sensor.
The described sensor acquisition data frequency that is embedded in the soft base is 250/second.
Soft its fiber-optic monitoring system of described high-grade highway comprises the monitoring of soft base optical fiber real-time parameter, settlement calculation and warning and parameter configuration, for the user highway soft foundation situation is carried out on-line monitoring.The file that optical fiber detects deposit data is read in the real-time parameter monitoring; Settlement calculation and warning are to utilize real time data and historical data to calculate monitoring parameters such as comprising subgrade settlement, water pressure and temperature, result of calculation is returned to graphical interface of user show, and the subgrade settlement result is classified, and realize the sedimentation warning; The parameters in each monitoring parameter calculation expression can be changed and preserve to parameter configuration, is convenient to according to different condition of construction the calculating of each monitoring parameter be proofreaied and correct.
In the utility model, the detected real time data of optical fiber is deposited in the designated store file, reads and inquires about for the user.It can be various numerical value, figure and curve that data are processed the operating result that turns back to graphical interface of user after the processing.The utility model is developed by Visual C++6.0.
In the utility model, described user comprises unit in charge of construction, supervisor and monitoring unit.
The user need to select the file of reading of data by graphical interfaces, system's reading of data, by will comprising after calculating that various monitoring parameters such as subgrade settlement, water pressure and temperature give the user with numerical value, figure and curve display, and the roadbed total settlement inquired about and report to the police.The user can also read file, historical subsidence curve, sedimentation warning, revise parameter and username and password by graphical interfaces.
The utility model can be inquired about and computing the soft base monitoring data easily, forms required various figures, the curve of user, reflects the whole or local conditions of treatment of soft foundation in real time.
The utility model has the advantages that: 1. real-time is good, and real-time reading of data and showing is accelerated the transmission of Monitoring Data, reflected the situation of treatment of soft foundation in real time, is convenient to understand the site operation situation; 2. the automaticity height reads and the accurate collection in worksite data that show automatically, automatically various monitoring parameters is quantized to calculate, and reports to the police in conjunction with historical sedimentation and current sedimentation situation, helps reflecting soft basic situation comprehensively.
Current calculating to various monitoring parameters such as subgrade settlement, water pressure and temperature is after calculating by artificial utilization detection data, submit to written report again, not only expend time in, and occur often can not in time reporting when unusual when sedimentation, be unfavorable for that supervision department in time grasps soft basic progress.The real-time demonstration of the soft base optical fiber monitoring system of high-grade highway, calculate automatically and warning function has changed the pattern that artificial calculating reports again, spent great effort of artificial calculating and time have not only been significantly reduced, also can carry out Realtime Alerts, realize the effective monitoring and the management of soft base monitoring data current subgrade settlement situation.
The beneficial effects of the utility model are: solved in the soft base monitoring situations such as subgrade settlement are reported problems such as hysteresis, monitoring be ineffective, help in time grasping monitor message, effective guiding construction, intuitively reflect field data by functions such as graphic presentations, and realized the sedimentation warning function, significant to the informationization, intellectuality and the robotization that promote the high-grade highway soft base monitoring.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the monitoring system synoptic diagram that the utility model provides;
Embodiment
Embodiment is shown in Fig. 1-2: the soft base optical fiber monitoring system of a kind of high-grade highway, and described monitoring system comprises, is embedded in the fiber-optic grating sensor in the soft base, gives soft base optical fiber grating demodulation instrument with the data of gathering by Optical Fiber Transmission; This fiber Bragg grating (FBG) demodulator is given described fiber-optic monitoring system with signal by Network Transmission; The fiber-optic monitoring system handles data; Data processed is shown to the user by display.
Described sensor is the sedimentation fiber-optic grating sensor.
The described sensor acquisition data frequency that is embedded in the soft base is 250/second.
Soft its fiber-optic monitoring system of described high-grade highway comprises the monitoring of soft base optical fiber real-time parameter, settlement calculation and warning and parameter configuration, for the user highway soft foundation situation is carried out on-line monitoring.The file that optical fiber detects deposit data is read in the real-time parameter monitoring; Settlement calculation and warning are to utilize real time data and historical data to calculate monitoring parameters such as comprising subgrade settlement, water pressure and temperature, result of calculation is returned to graphical interface of user show, and the subgrade settlement result is classified, and realize the sedimentation warning; The parameters in each monitoring parameter calculation expression can be changed and preserve to parameter configuration, is convenient to according to different condition of construction the calculating of each monitoring parameter be proofreaied and correct.
In the utility model, the detected real time data of optical fiber is deposited in the designated store file, reads and inquires about for the user.It can be various numerical value, figure and curve that data are processed the operating result that turns back to graphical interface of user after the processing.The utility model is developed by Visual C++6.0.
In the utility model, described user comprises unit in charge of construction, supervisor and monitoring unit.
The user need to select the file of reading of data by graphical interfaces, system's reading of data, by will comprising after calculating that various monitoring parameters such as subgrade settlement, water pressure and temperature give the user with numerical value, figure and curve display, and the roadbed total settlement inquired about and report to the police.The user can also read file, historical subsidence curve, sedimentation warning, revise parameter and username and password by graphical interfaces.
The utility model can be inquired about and computing the soft base monitoring data easily, forms required various figures, the curve of user, reflects the whole or local conditions of treatment of soft foundation in real time.
With reference to Fig. 1, be the structural representation of the soft base optical fiber monitoring system of high-grade highway that provides of the utility model.
Bury the sedimentation fiber-optic grating sensor underground at monitoring section, measure the geographic properties of sedimentation and the measurement range of fiber-optic grating sensor, can bury a plurality of sensors underground at monitoring section according to concrete needs.The pore pressure sensor can be buried underground at soft basic different depth according to the monitoring purpose.In order to improve measuring accuracy, also the serviceability temperature sensor for temperature is measured usually, with the temperature value that measures the data of other Fibre Optical Sensor collections is carried out the temperature compensation correction.When needs are measured the temperature field, can bury temperature sensor separately underground.But settlement sensor and the pore pressure sensor that often uses all carries temperature sensor at present, therefore just not necessarily will bury underground separately.In the present embodiment, each settlement sensor and a temperature sensor are formed one group of sensor, use data that this temperature sensor reads that the data that the settlement sensor of this group reads are compensated; Similar, for each pore pressure sensor, also be combined into one group of sensor with a temperature sensor, use data that this temperature sensor reads that the data that the pore pressure sensor of this group reads are compensated.Each group sensor has intrinsic calibration coefficient respectively, can select the sensor of the calibration coefficient that is fit to measure under different operating modes.
Described settlement sensor, temperature sensor and pore water pressure sensor are sampled respectively and the optical wavelength signal of gathering are passed to fiber Bragg grating (FBG) demodulator by optical fiber, are transmitted through the network to the database of monitoring system again.Network used herein can be known network type of attachment, for example supports the common network of TCP/IP procotol, also can be that other forms of network connects, and for example wireless network connects.After by the fiber-optic monitoring system data being handled, data processed is shown to the user by display.
As shown in Figure 2, the monitoring system synoptic diagram that provides for the utility model.
In order to access the real time status of soft base, need carry out frequent sampling to measuring section by sensor.In the present embodiment, each sensor is sampled and is transmitted data frequency and is set to 250/second, according to resources such as the sensor of concrete needs and employing and transmission networks, can select for use the sensor of appropriate frequency to sample.Real-time Data Transmission is deposited with textual form to database.The data that each sensor is obtained p.s. write in the same database file respectively according to time sequencing successively, this database is stored with text formatting, every group of data comprise the signal data of all the sensors that a time signal point is corresponding, data layout can be set at the signal of arranging the system of passing back according to a definite sequence of sensor accordingly.For example in the corresponding text of some settlement sensors, record 1000 groups of data, represent on 1000 time points in preceding 4 seconds the signal data that all the sensors is passed back successively.The size of real-time data base is relevant with the holding time, and the holding time, the long data storehouse was big more more.Real-time data base shows while writing by monitoring system, and monitoring system reads this data frequency and is consistent with the frequency that sensor reads, and realizes real-time Transmission.The fiber-optic monitoring system is according to above-mentioned setting to the data form, and the signal of on display interface each sensor being passed back is shown as the data of each sensor more accordingly respectively.
In order to obtain the numerical value of settlement of soft foundation, at first when measurement was initial, the original state value that need read each sensor was as reference numerical value.After this, read the wavelength data of fiber-optic grating sensor in real time, compare, just can obtain the situation of change of the data of sensor acquisition with above-mentioned original state value.Sensor described here comprises above-mentioned settlement sensor, pore water pressure sensor and temperature sensor etc.Data and above-mentioned original state value that each sensor is read compare, calculate, and result of calculation is shown to the user with various ways such as real-time parameter, real-time parameter curves.
Can when each monitoring, data monitored be preserved according to operating mode, form historical data base.According to certain frequency one group of data storage in the real-time data base is gone into historical data base, after continuing for some time, just form interior during this period of time historical record.For example in one month, certain set time of every day puts carrying out the measurement of 1 minute set time section in the working-yard, a data file of obtaining every day; One group of data in the data file of an every day in the middle of the month are written in the historical data library file, just form the history file in month, because every group of data do not have to change substantially in 1 fen very short clock time, therefore one group of data of above-mentioned taking-up can carry out obtaining at random the obtained multi-group data of 1 minute set time section from the working-yard.In the time need analyzing, the data read in the historical data base is come out, and be shown to the user with the form of form or curve to the data of historical data base.Certainly, the time period length of the frequency of said write historical data base, real time record and the time span of historical record can be decided as the case may be, for example can be with several hours of every day frequency as the store historical data storehouse, with 2 seconds of beginning of each hour as section sample time, a plurality of records of every day write in the historical data base, continue a week or longer time, just formed interior during this period of time historical data base.Because the record that all the sensors reads in the real-time data base all writes in the historical data base, therefore, historical data base can read the history value of overall sedimentation (ground settlement), each delaminating deposition, all temperature variation, this Several Parameters of pore pressure simultaneously.
Also store the configuration information of parameter in the database, can adapt to the measurement requirement of different operating modes by configuration information is made amendment.
Can also visitor's identity of database be limited, this can realize by the identity authentication to the visitor.For example confirm by visitor's user name, password whether the visitor has authority that operation such as is read and write in the data storehouse.
For other information of monitoring system, for example copyright information, points for attention etc. also can leave in the database, access at any time and read.
In the present embodiment, can adopt calculating, operation and the data transmission of common computer realization monitoring system, these all are this area technological means commonly used, repeat no more here.
Claims (3)
1. soft base optical fiber monitoring system of high-grade highway is characterized in that: described monitoring system comprises,
Be embedded in the fiber-optic grating sensor in the soft base, give soft base optical fiber grating demodulation instrument by Optical Fiber Transmission the data of gathering;
This fiber Bragg grating (FBG) demodulator is given described fiber-optic monitoring system with signal by Network Transmission;
The fiber-optic monitoring system handles data;
Data processed is shown to the user by display.
2. the soft base optical fiber monitoring system of high-grade highway according to claim 1 is characterized in that: described sensor is the sedimentation fiber-optic grating sensor.
3. the soft base optical fiber monitoring system of high-grade highway according to claim 2 is characterized in that: the described sensor acquisition data frequency that is embedded in the soft base is 250/second.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205460704U CN201876256U (en) | 2010-09-28 | 2010-09-28 | Optical fiber monitoring system for high-grade road soft foundation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205460704U CN201876256U (en) | 2010-09-28 | 2010-09-28 | Optical fiber monitoring system for high-grade road soft foundation |
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| CN201876256U true CN201876256U (en) | 2011-06-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012225A (en) * | 2010-09-28 | 2011-04-13 | 黎剑华 | Optical fiber monitoring system of highway soft foundation |
| CN102418334A (en) * | 2011-09-28 | 2012-04-18 | 上海杰蜀光电科技有限公司 | Remote automatic monitoring system for subgrade settlement and monitoring method thereof |
| CN103542835A (en) * | 2013-10-22 | 2014-01-29 | 国家电网公司 | Foundation settlement monitoring system |
-
2010
- 2010-09-28 CN CN2010205460704U patent/CN201876256U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012225A (en) * | 2010-09-28 | 2011-04-13 | 黎剑华 | Optical fiber monitoring system of highway soft foundation |
| CN102418334A (en) * | 2011-09-28 | 2012-04-18 | 上海杰蜀光电科技有限公司 | Remote automatic monitoring system for subgrade settlement and monitoring method thereof |
| CN102418334B (en) * | 2011-09-28 | 2013-12-04 | 上海杰蜀光电科技有限公司 | Remote automatic monitoring system for subgrade settlement and monitoring method thereof |
| CN103542835A (en) * | 2013-10-22 | 2014-01-29 | 国家电网公司 | Foundation settlement monitoring system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20110928 |