CN103090825A - Compatible railroad bridge condition monitoring system based on Beidou satellite - Google Patents
Compatible railroad bridge condition monitoring system based on Beidou satellite Download PDFInfo
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Abstract
The invention relates to a compatible railroad bridge condition monitoring system based on a Beidou satellite, and belongs to the technical field of electronic monitoring. An output end of a monitoring point antenna is connected with a CRNSS receiver through an antenna controller. An output end of the CRNSS receiver is connected with a data processing hose computer in a wireless network bridge communication mode or a cable communication mode. The data processing hose computer is connected with a roadside early warning radio station through a radio station. The roadside early warning radio station and a train are also in communication through the radio station. The data processing hose computer is connected with a station monitoring center through a third generation telecommunication (3G) module. By means of the compatible railroad bridge condition monitoring system based on the Beidou satellite, when the situation that deformation of a bridge exceeds a predetermined danger level is monitored before toppling of the bridge, the situation information can be sent to the station monitoring center through a 3G network, the station monitoring center analyzes historical data of a monitoring point to obtain a deformation trend of the monitoring point, and therefore the happening time of a danger can be forecasted, and the station monitoring center is enabled to timely grasp the dangerous conditions of a road; data analysis is conducted through long-time monitoring of the bridge to estimate the healthy conditions of the bridge and realize early warning on insecurity; and continuous monitoring for 24 hours a day all year round can be realized.
Description
Technical field
The present invention relates to a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type, belong to the electronic monitoring technical field.
Background technology
Along with the demand of progress and the communications and transportation of science and technology, the real-time health monitoring problem of bridge is subject to more research and pays close attention to.Bridge health situation on railway line, relation the traffic safety of train, by the deformation of continuous monitoring bridge, can realize bridge danger early warning and warning, helps to take precautions against the train accident that train causes because bridge is dangerous.
In recent years, along with the development of hi-Fix technology, positioning equipment has developed into unmanned, operation continuously all the year round, and bearing accuracy can reach grade.This technology has been widely used in the monitoring that dam, bridge, landslide, roadbed subsidence, Tailings Dam, glacier move.
Current example for the bridge deformation monitoring is existing a lot, carries out the deformation monitoring of large bridge with conventional method, has many restrictions and inconvenience.
Especially at present numerous railroad bridge construction is existing, and the security of railroad bridge has a strong impact on the safe operation of railway for many years, and the monitoring of railroad bridge is imperative.Otherwise will have a strong impact on railway operation, construction and life property safety of people along the line.
Along with the development of hi-Fix technology, make the microdeformation monitoring to landslide, bridge become possibility.Domestic at present few about relevant device and the product of railroad bridge real-time displacement monitoring, the bridge displacement monitoring that is applied to traffic safety is based on the ess-strain monitoring of bridge more, winding degree, temperature, support displacement, the monitorings such as pier slope, but because application demand and the background difference of common bridge and railroad bridge are larger, the data of its monitoring can not satisfy the demand of railroad bridge safety monitoring, thereby based on technology and the product of the deformation monitoring of common bridge and be not suitable for the safety monitoring of railroad bridge.
Current example for the bridge deformation monitoring is existing a lot, carries out the deformation monitoring of large bridge with conventional method, has many restrictions and inconvenience.Exist each measuring point asynchronous as total powerstation, the shortcoming such as large deformation is difficult measures, and real-time is poor; And displacement transducer simultaneously also exists inaccessible point and can't measure, the shortcomings such as lateral displacement measurement difficulty; Also there is employing global satellite system (GPS) technology to carry out bridge deformation monitoring.But at present a lot of bridge safety supervision system for be all highway bridge, and at present also there is no effective bridge safety supervision system for the railroad bridge with own characteristic, if the simple bridge security system that adopts the monitoring highway, can not observe well the subtle change of bridge, the numerous bridges of Present Domestic have all been built for many years, the security of railroad bridge has a strong impact on the safe operation of railway, sets up special railroad bridge safety monitoring system imperative.
Summary of the invention
Can not effectively monitor the bridge subtle change for existing railroad bridge safety monitoring system, a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type provided by the invention, can be before bridge collapse, monitoring bridge deformation exceeds when presetting danger classes, can be dealt into station Surveillance center by 3G network, station Surveillance center is by analyzing the monitoring point historical data, draw monitoring point deformation trend, can predict dangerous time of origin, make Surveillance center in time grasp the dangerous situation of road; By the long term monitoring to bridge, carry out data analysis, the health condition of estimation bridge realizes dangerous early warning; Can annual uninterrupted continuous monitoring in 24 hours.
The technical solution used in the present invention: monitoring system is comprised of CRNSS DEFORMATION MONITORING SYSTEM, data processing host, warning radio station, limit, road, 3G module, station Surveillance center six parts, the CRNSS DEFORMATION MONITORING SYSTEM is comprised of outdoor sensor, antenna, antenna controller, CRNSS receiver, monitoring point, base station, the monitoring point is distributed on the area to be monitored, outdoor sensor is fixed on detected position, the monitoring point is provided with base station, adopts wireless bridge or cable communication modes between monitoring point and base station; Base station mainly is comprised of monitoring point antenna, antenna controller and CRNSS receiver, the output terminal of monitoring point antenna passes through antenna controller and is connected the CRNSS receiver, the output terminal of CRNSS receiver is by wireless bridge or cable communication modes connection data processing host, the data processing host is connected with early warning radio station, limit, road by the radio station, also adopt the radio station communication between early warning radio station, limit, road and train, the data processing host is passed through the 3G module and is connected to station Surveillance center.
warning radio station, limit, road is installed on the place ahead, monitored area two kms, when receiver main frame in monitored area adopts high speed processor, can process simultaneously the multi-path antenna data on a large scale, form many antennas of machine main frame, in among a small circle the monitored area select machine one an antenna main frame, its main frame of all monitoring points comprises direct striking thunder prevention, the anti induction thunder is processed, its main frame of all monitoring points is all installed in guard box and the direct striking thunder prevention lightning rod is set, all monitoring point host power supplies adopt on line type UPS and externally fed circuit to isolate, and connection power lightning protection protector, all monitoring point host signal circuit signalization anti-lightening protectors, all video monitoring cameras are except adopting lightning rod, outside the power lightning protection protector, the same signalization anti-lightening protector of its vision signal circuit, all devices and guard box thereof be strict ground connection all, stake resistance is less than 4 Ω, on same transversal section, a plurality of lightning protection points can consider to connect into lightning protection net when close together, outdoor sensor and CRNSS receiver adopt the solar wind-energy power supply or directly use 220 volts of AC-powered.
Method of work of the present invention: the present invention adopts difference CRNSS location technology, and the monitoring point receiver continuously is sent to the electromagnetic wave in the whole world by following the tracks of the CRNSS satellite, obtain the aerial position of self.Receive simultaneously the differential data that base station is sent, then utilize the RTK(real time dynamic measurement) technology, obtain afterwards as calculated the three-dimensional coordinate (longitude, latitude, elevation) of high precision.Obtain the position, monitoring point after monitoring point coordinate and map correspondence, compare with the original position of preserving before, can obtain the relative displacement of monitoring point, when in the certain hour section, the relative displacement of monitoring point is greater than certain value, trigger early warning or warning, after early warning or warning message send, starting early warning and warning treatment mechanism.
Beneficial effect of the present invention: the present invention can be before bridge collapse, monitoring bridge deformation exceeds when presetting danger classes, can be dealt into station Surveillance center by 3G network, station Surveillance center is by analyzing the monitoring point historical data, draw monitoring point deformation trend, can predict dangerous time of origin, make Surveillance center in time grasp the dangerous situation of road; By the long term monitoring to bridge, carry out data analysis, the health condition of estimation bridge realizes dangerous early warning; Can annual uninterrupted continuous monitoring in 24 hours.
Description of drawings
Fig. 1 is system chart of the present invention;
Fig. 2 is that CRNSS of the present invention system consists of schematic diagram;
Fig. 3 is a machine multiaerial system schematic diagram of the present invention;
Fig. 4 is data processing centre (DPC) of the present invention functional schematic;
Fig. 5 is working-flow of the present invention.
Embodiment
As shown in Fig. 1,2,3,4: monitoring system is comprised of CRNSS DEFORMATION MONITORING SYSTEM, data processing host, warning radio station, limit, road, 3G module, station Surveillance center six parts, the CRNSS DEFORMATION MONITORING SYSTEM is comprised of outdoor sensor, antenna, antenna controller, CRNSS receiver, monitoring point, base station, the monitoring point is distributed on the area to be monitored, outdoor sensor is fixed on detected position, the monitoring point is provided with base station, adopts wireless bridge or cable communication modes between monitoring point and base station; Base station mainly is comprised of monitoring point antenna, antenna controller and CRNSS receiver, the output terminal of monitoring point antenna passes through antenna controller and is connected the CRNSS receiver, the output terminal of CRNSS receiver is by wireless bridge or cable communication modes connection data processing host, the data processing host is connected with early warning radio station, limit, road by the radio station, also adopt the radio station communication between early warning radio station, limit, road and train, the data processing host is passed through the 3G module and is connected to station Surveillance center.
warning radio station, limit, road is installed on the place ahead, monitored area two kms, when receiver main frame in monitored area adopts high speed processor, can process simultaneously the multi-path antenna data on a large scale, form many antennas of machine main frame, in among a small circle the monitored area select machine one an antenna main frame, its main frame of all monitoring points comprises direct striking thunder prevention, the anti induction thunder is processed, its main frame of all monitoring points is all installed in guard box and the direct striking thunder prevention lightning rod is set, all monitoring point host power supplies adopt on line type UPS and externally fed circuit to isolate, and connection power lightning protection protector, all monitoring point host signal circuit signalization anti-lightening protectors, all video monitoring cameras are except adopting lightning rod, outside the power lightning protection protector, the same signalization anti-lightening protector of its vision signal circuit, all devices and guard box thereof be strict ground connection all, stake resistance is less than 4 Ω, on same transversal section, a plurality of lightning protection points can consider to connect into lightning protection net when close together, outdoor sensor and CRNSS receiver adopt the solar wind-energy power supply or directly use 220 volts of AC-powered.
Monitoring point branch mainly is comprised of antenna and CRNSS receiver etc. in the area to be monitored.Settle a CRNSS receiver on known coordinate point, be called base station, utilize known coordinate and satellite ephemeris to calculate the corrected value of observed reading, and by wireless device (title Data-Link), corrected value is sent to a plurality of CRNSS receivers, the CRNSS receiver corrects according to the CRNSS observed reading of the corrected value of receiving to oneself, to eliminate the impact of satellite clock correction, receiver clock correction, atmospheric ionized layer and tropospheric refraction error.After the monitoring point main frame receives the satellite information and base station differential data that antenna obtains, through certain computing, obtain self three-dimensional coordinate, by cable or communication, coordinate information is sent to on-the-spot main frame, the monitoring point coordinate information that host process, preservation receive, and with current location data with before the position data of preserving compare, during greater than limit value, trigger early warning or warning when changing value.
Warning radio station, limit, road is installed on the place ahead, monitored area two kms, when the warning message of data processing centre (DPC) or early warning information are received in the warning radio station, by the radio station, this information is sent to passing train, train after receiving early warning or warning message, the measure such as can take to brake, stop, going slowly in the scope in two kilometers, risk distance zone.
Surveillance center generally is positioned at the station, is managed by the special messenger, and it carries out long preservation to the control point data of receiving, analyzes, gathers, and draws the Secular Variation Tendency figure of monitored point, for judging that early warning information provides foundation.When finding to be necessary to vehicular traffic issue early warning, warning or slowing down by order, can issue early warning, warning or deceleration by instruction to data processing centre (DPC) by network, after data processing centre (DPC) receives orders, then by the radio station, instruction is sent to outer warning radio station, limit, road, two kilometers, the place ahead.
Surveillance center has engineering management and Monitoring Service software, is the server software for the engineering management under multiple-project, multi-user environment and monitoring and warning work, mainly is divided into two parts of user interface and background service.User interface provide monitoring works foundation, check, arrange, connect and the multiple operation such as management, background service charge of overseeing and analyzing resolve with gather after the achievement data, and forecast and warn according to the condition of definition before.
Data processing centre (DPC) is the core of whole system, its main task is gather data of monitoring point and process, then carrying out early warning judges and generates various analyzed patterns and report, when the deformation of finding the monitoring point reaches early warning or alarm level, early warning information or warning message are sent to early warning radio station, limit by the radio station, send to station Surveillance center by the 3G module simultaneously.Data handling system can be carried out Baselines, known point meets reduction, coordinate Calculation, precision estimation etc., and its calculation accuracy directly has influence on the reliability and stability of Monitoring Result, is the important step that data are processed.The early warning judgment part can draw the deformation analysis result according to deformation analysis models, generates analysis report, carry out from dynamic circuit breaker in conjunction with default police circles' grade other, and multi-form issue early warning information by all kinds of means in good time.
Surveillance center carries out long preservation, analyzes, gathers the data of monitoring point of receiving, draws the Secular Variation Tendency figure of monitored point, for judging that early warning information provides foundation.When Surveillance center finds to be necessary to vehicular traffic issue early warning, warning or slows down by order, can issue early warning, warning or deceleration by instruction to data processing centre (DPC) by 3G network, after data processing centre (DPC) receives orders, then by the radio station, instruction is sent to outer warning radio station, limit, road, two kilometers, the place ahead.Surveillance center has engineering management and Monitoring Service software, is the server software for the engineering management under multiple-project, multi-user environment and monitoring and warning work, mainly is divided into two parts of user interface and background service.User interface provide monitoring works foundation, check, arrange, connect and the multiple operation such as management, background service charge of overseeing and analyzing resolve with gather after the achievement data, and forecast and warn according to the condition of definition before.Surveillance center also has network release system, it allows the user to sign in on monitor server in the browser of the computing machine of accessing Internet, check monitoring field floor map, monitoring station coordinate displacement changing trend diagram and other Monitoring Data changing trend diagram, alarm threshold value and type of alarm are set, browse alarm log and Operation Log and generate WORD form etc.Under the emergency circumstance Surveillance center can be in good time by all kinds of means the multi-form early warning information of carrying out report: comprise running technology personnel, the leader of unit, upper management department information center etc. as publication channel, form comprises note, pilot lamp, audio warning, large screen display etc.
Outdoor sensor and CRNSS receiver can adopt the solar wind-energy power supply or directly use 220 volts of AC-powered.Use the alternating current method simple, directly use power lead and equipment connection to get final product, but open-air cloth electricity is subjected to the restriction in environment and geographic position to cause cost high sometimes, the shortcomings such as constructional difficulties.Solar wind-energy adds accumulator and can address this problem.The accumulator that native system adopts is lead-acid battery, and design capacity is 120Ah, can satisfy overcast and rainy 10 days left and right working times.
As shown in Figure 5: method of work of the present invention: the present invention adopts difference CRNSS location technology, the monitoring point receiver continuously is sent to the electromagnetic wave in the whole world by following the tracks of the CRNSS satellite, obtain the aerial position of self, receive simultaneously the differential data that base station is sent, then utilize the RTK(real time dynamic measurement) technology, obtain afterwards as calculated the three-dimensional coordinate (longitude, latitude, elevation) of high precision.Obtain the position, monitoring point after monitoring point coordinate and map correspondence, compare with the original position of preserving before, can obtain the relative displacement of monitoring point, when in the certain hour section, the relative displacement of monitoring point is greater than certain value, trigger early warning or warning, after early warning or warning message send, starting early warning and warning treatment mechanism.
The present invention can be before bridge collapse, monitoring bridge deformation exceeds when presetting danger classes, can be dealt into station Surveillance center by 3G network, station Surveillance center is by analyzing the monitoring point historical data, draw monitoring point deformation trend, can predict dangerous time of origin, make Surveillance center in time grasp the dangerous situation of road; By the long term monitoring to bridge, carry out data analysis, the health condition of estimation bridge realizes dangerous early warning; Can annual uninterrupted continuous monitoring in 24 hours.
The present invention describes by accompanying drawing, without departing from the present invention, can also carry out various conversion and be equal to replacement patent of the present invention, therefore, patent of the present invention is not limited to disclosed specific implementation process, and should comprise the whole embodiments that fall in Patent right requirement scope of the present invention.
Claims (8)
1. system for monitoring state of railroad bridge based on Big Dipper compatible type, it is characterized in that: monitoring system is comprised of CRNSS DEFORMATION MONITORING SYSTEM, data processing host, warning radio station, limit, road, 3G module, station Surveillance center six parts, the CRNSS DEFORMATION MONITORING SYSTEM is comprised of outdoor sensor, antenna, antenna controller, CRNSS receiver, monitoring point, base station, the monitoring point is distributed on the area to be monitored, outdoor sensor is fixed on detected position, the monitoring point is provided with base station, adopts wireless bridge or cable communication modes between monitoring point and base station; Base station mainly is comprised of monitoring point antenna, antenna controller and CRNSS receiver, the output terminal of monitoring point antenna passes through antenna controller and is connected the CRNSS receiver, the output terminal of CRNSS receiver is by wireless bridge or cable communication modes connection data processing host, the data processing host is connected with early warning radio station, limit, road by the radio station, also adopt the radio station communication between early warning radio station, limit, road and train, the data processing host is passed through the 3G module and is connected to station Surveillance center.
2. a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type according to claim 1, it is characterized in that: warning radio station, limit, road is installed on the place ahead, monitored area two kms.
3. a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type according to claim 1, is characterized in that: when receiver main frame in monitored area adopts high speed processor, can process simultaneously the multi-path antenna data on a large scale, form many antennas of machine main frame.
4. a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type according to claim 1 is characterized in that: among a small circle the monitored area select machine one an antenna main frame.
5. a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type according to claim 1 is characterized in that: its main frame of all monitoring points comprises that direct striking thunder prevention, anti induction thunder process.
6. a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type according to claim 1 is characterized in that: outdoor sensor and CRNSS receiver adopt the solar wind-energy power supply or directly use 220 volts of AC-powered.
7. a kind of system for monitoring state of railroad bridge based on Big Dipper compatible type according to claim 1, it is characterized in that: the detection method of system for monitoring state of railroad bridge, native system adopts difference CRNSS location technology, the monitoring point receiver continuously is sent to the electromagnetic wave in the whole world by following the tracks of the CRNSS satellite, obtain the aerial position of self, receive simultaneously the differential data that base station is sent, then utilize the RTK(real time dynamic measurement) technology, obtain afterwards as calculated the three-dimensional coordinate (longitude, latitude, elevation) of high precision.
8. obtain the position, monitoring point after monitoring point coordinate and map correspondence, compare with the original position of preserving before, can obtain the relative displacement of monitoring point, when in the certain hour section, the relative displacement of monitoring point is greater than certain value, trigger early warning or warning, after early warning or warning message send, starting early warning and warning treatment mechanism.
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