System for high-precision monitoring of displacements of engineering structures

FIELD: radio engineering, communication.

SUBSTANCE: system has a measurement module having a GLONASS/GPS navigation antenna, a GLONASS/GPS navigation receiver, a controller with nonvolatile memory, a transceiving communication module, an accumulator battery, an accumulator battery charging device, sensor equipment for the measurement module, external sensor equipment, a personal computer-based automated operator workstation with a processor.

EFFECT: high accuracy of calculating characteristics of displacements of engineering structures and continuous monitoring of parameters of displacements of engineering structures.

2 dwg

 

The invention relates to the field of systems for monitoring displacement of engineering structures and can be used to conduct continuous monitoring of displacements and vibrations of structural elements of bridges, dams, towers and other structures to detect the integrity of the structure, as well as the timely detection of loss of stability of the structure.

The prior art structured system of monitoring and control of engineering systems of buildings and structures (see Russian Federation patent for utility model RU 82048, publ. 10.04.2009)that contains the Central processing module of the computer server station, which is connected to the power engineering systems. The system performs the following functions: acquisition parameters of engineering systems, development of a database of current parameters of engineering systems, trending parameters of engineering systems and database development trends of the parameters, the extrapolation of the trend values of the parameters of engineering systems at a constant time interval, the operation simulation of engineering systems and the definition of the estimated values of the parameters and their permissible values, creating a database of estimated parameters and their limit values, a comparison of current system parameters to calculate the s parameters and their permissible values, comparison of extrapolated values and the current values of the operating parameters with the estimated parameters and their permissible values, identify possible consequences, damage assessment and recommendations in response to results of computer simulation in excess of the absolute values of the current parameters and/or extrapolated at a constant time interval values of the current parameters of engineering systems corresponding values of the estimated parameters of engineering systems at values that exceed the threshold value, the latching operation of engineering systems and/or predicted state of operation of engineering systems and assessment of the potential impacts caused by the occurrence of a contingency, and recommendations for response to abnormal situations, as well as the formation of management teams of engineering the system in automatic and/or semi-automatically with no operator intervention.

The prior art method of monitoring the technical condition of buildings and structures (object) (see the application for the invention of the Russian Federation RU 2008106992, publ. 10.09.2010), which includes the excitation of vibrations of the object on their own frequencies, registration vibration and/or acceleration, vibrations, and/or velocity fluctuations, and/or amplitudes, and/or tilt and/or PR the bends and/or stress and/or stress, and/or measuring absolute and differential settlement, and/or geodetic parameters, and/or control of cracks, joints, seams, characterized in that will filter the parameters of the technical condition of buildings and structures on two groups of parameters: parameter group technical condition of the lower part of the object and the parameters of the technical condition of the upper part of the object, determined using the parameters of the technical condition of the lower part object by mathematical (computer) object modeling design parameters and construction of top structures of the object, compare the estimated parameters of the construction of top structures of the object with the same parameters of the construction of top structures of the object defined by the results of experimental measurements from the sensors for monitoring the technical condition of the upper part of the object, adjust the parameters of the mathematical model of the object, provided that the parameters of the design and construction of top structures of the object defined by the results of mathematical modeling, different from similar parameters of the construction of top structures of the object defined by the results of experimental measurements on a value greater than a predetermined threshold, determined by measured the parameters of the technical condition of the lower part object the trends of the parameters of the technical condition of the lower part of the object, extrapolate the trend values of the parameters of the technical condition of the lower part of the object at a given time interval is determined on the basis of extrapolation of the parameters of the technical condition of the lower part of the object projected estimated parameters of the technical condition of construction of the upper part of the object is fixed for the consumer forecast estimates of future technical condition of the object based on a comparative analysis of forecasting the estimated parameters of the technical condition of building structures of the upper part of the object with the maximum allowable values.

The prior art method and device for relative positioning satellite moving platforms (see U.S. patent for the invention of US 6961018, publ. 01.11.2005). The invention is directed to determining the relative position of the moving platforms with the use of satellite navigation technologies and equipment installed on platforms. It is based on the principles of space navigation - differential systems and uses differential GNSS modes, leading to the minimum data and estimated loads to the auxiliary processor. The invention provides precise positioning and relative navigation.

The prior art method and device for NASA the Noah shooting stations with one or more unstable area (see the U.S. patent for the invention of US 7199872, publ. 03.04.2007). The invention relates to the field of ground-based survey (monitoring) section with one or more unstable zones and at least one control point located outside the zone of instability, where movement control is carried out relative to the sensors placed at various points in the plot.

The prior art measuring seismic system using GPS receivers (see U.S. patent for the invention of US 7117094, publ. 15.07.2004). The monitoring system of three-dimensional seismic data, including many digital sensors, control center and data processing, a GPS base station with the antenna located in the most open in the upper half-plane of the hemisphere, and the Rover pole GPS receivers use signals from the base station to determine its location with high accuracy.

The prior art method and system for GPS and WAAS phase measurements for relative positioning (see U.S. patent for the invention of US 6469663, publ. 24.10.2000). A precise method of determining the relative position between two points using the phase information of the bearing of the receiver, is capable of producing code and phase measurements of signals transmitted from GPS satellites, and signals from WAAS, EGNOS, MSAS or other syracusan the x differential systems satellites (hereinafter referred to simply as "the WAAS satellites"). These signals are processed in the receiving system to determine the relative position, for imaging or other applications. Signal processing is similar to the one used in the existing GPS-phase receivers. This method is faster and more reliable ambiguity resolution phase measurement, protection from the crossing of phase cycles and loss of the satellites, as well as the ability to extend the operating range, allowing you to increase the base between receivers by including ionospheric model presented WAAS.

Known from the prior art technical solutions have the following disadvantages:

- lack of accurate measurement of displacements of engineering structures.

The technical result of the claimed invention is to improve the accuracy of the calculation of the displacements of engineering structures and continuous monitoring of the parameters of the displacement of engineering structures.

The technical result is achieved by the fact that the system of high-precision monitoring of engineering structures contains a measuring unit that includes a navigation antenna GPS/GLONASS, GLONASS/GPS controller with nonvolatile memory, transceiver communication module, battery, charger battery, sensor equipment measuring module; external d is tchekova equipment, the automated workplace of the operator-based PC processor, while the device is charging the battery connected to the battery which is connected to the controller with nonvolatile memory, the output of the navigation antenna GPS/GLONASS connected to the input of GLONASS/GPS, input-output navigation receiver connected to the first input-output controller with nonvolatile memory, the second input-output of which is connected to the first input-output transceiver communication module, the second input-output of which is used to communicate with the workstation operator-based PC with a processor through a communication Protocol TCP/IP, the output of sensor equipment measuring module is connected to the input of the controller non-volatile memory, the output of the external sensor equipment connected to the workstation operator-based PC with a processor through a communication Protocol TCP/IP, while the automated workplace of the operator-based PC processor has an output for transmitting information to external systems (dispatch centers).

Processor PC workstation operator with the ability to:

- tracking the displacements of structural elements of engineering structures in three-space is the number of coordinates;

- collect data from the measuring module;

analysis of the received data and the determination of the displacements of the controlled points;

- determine the spectral characteristics of the displacements of the resonant frequencies of the structure);

- generate alarms in case of displacement controlled parameters beyond the established borders;

- display the results of processing information in an easy-to operator;

documenting and storing the received data.

The characteristics and essence of the present invention are explained in the following detailed description, illustrated in the drawings, there is shown following.

Figure 1 - Structural diagram of the system of high-precision monitoring of displacements of engineering structures, where:

11...1Lmeasuring modules;

2 - controller with nonvolatile memory;

3 - GLONASS/GPS;

4 - navigation antenna GPS/GLONASS;

5 - transceiver communication module;

6 - cell battery;

7 - device charging the battery;

81...8M- sensor apparatus measuring module;

91...9N- external sensor equipment;

10 - means of communication;

11 - the automated workplace of the operator-based PC processor;

12 - external information consumers.

Figure 2 - Algorithm process the RA workstation operator-based PC processor, where:

13 is a block collection in "raw" measurement from the measuring module;

14 - unit forming a common array ephemeris observed navigational satellites;

15 is a block ephemeris predictions of the observed navigational satellites;

16 - preparation unit simultaneously "raw" measurements and ephemeris;

17 - block filtering and control continuity of measurements;

18 is a block solve navigation tasks for the reference and controlled.

19 - block filtering the calculated coordinates;

20 is a block of data on the location and dynamics of the object;

21 is a block solve the navigation problem in differential mode "static";

the 22 - unit solution of the navigation problem in differential mode "dynamic";

23 is a block solve the navigation problem in differential mode "oscillations";

24 is a block special treatment;

25 - unit conversion calculated performance parameters of structures;

26 is a block displaying results;

27 is a block data transfer to external consumers.

The measuring modules are installed in selected during examination of the finer points of the object (structure), and one of the measuring modules installed on the reference object relative to which will be measured characteristics of the displacement of the controlled object. Measuring modules installed on controlled about the project, referred to as control points, the measuring module, installed on a supporting object, denoted as the reference point. The measuring modules are connected with the workstation operator-based PC processor by means of communication, such as wired communication links, wireless communication links, including through the Internet.

Optionally, the controlled object with the measuring modules installed sensor apparatus, such as inclinometers, accelerometers, humidity sensors, temperature sensors, etc. that connects to the workstation operator-based PC processor by means of communication, such as wired communication links, wireless communication links, including through the Internet using the transforming device. Part of the sensors included in the sensor module.

Measurements using the navigation field of global navigation satellite systems (GNSS) can not be conducted at all critical points of the structure and may not provide control of a number of important parameters. Therefore, the effectiveness of monitoring structures increases significantly if, in addition to apply inertial and other sensor equipment, such as inclinometers, accelerometers, humidity sensors, the temperature, etc. In this part of the sensors, it is advisable to place within the measuring module, and the other part - out modules. Measuring modules and external sensors connect to the workstation operator-based PC processor by means of communication, such as wired or wireless communication lines.

The device operates as follows.

On GLONASS/GPS (3) through the navigation antenna GPS/GLONASS (4) receives GNSS GLONASS/GPS and together with the data obtained from embedded sensors (81...8M), stored by the controller with nonvolatile memory (2), after doing this for a duplex communication module (5). Of the transceiver communication module (5) the signal communication means (10) is transmitted to the automated workplace of the operator-based PC processor (11), which receives data from all measuring modules (11...1Lin the form of "raw" measurements and ephemeris information, their buffers (queues for processing), also writes to a file archive for post-processing. Data from separate sensors (91...9N), which does not require precision timing in real time, are transferred to the automated workplace of the operator-based PC processor (11), where with the joint processing of data, obtained from measuring modules (11...1L). The processing results are transmitted to the external system (12), for example, in dispatch centers.

Block collection "raw" measurement from the measuring module 13 receives data from all measuring modules in the form of code pseudorange and phase measurements and ephemeris information, their buffers (queues for processing), also writes to a file archive for postprocessing. In parallel with the accumulation of dimensions in the block collection "raw" measurement from the measuring module 13, unit forming a common array ephemeris observed navigational satellites 14 is formed an array of ephemeris information of the observed satellites. On ephemeris information in the block of ephemeris predictions of the observed navigational satellites 15 are calculated coordinates of the satellites at five-second intervals, which reduces the load on the processor. It is enough to calculate the coordinates of the satellite at three points in time (t, (t+5), (t+10)) and to construct the interpolating polynomial of the second order for the time interval [t, t+10]:

[xyz]=[a1a2 a3]t2+[b1b2b3]t+[c1c2c3]

When processing measurements obtained with a rate of 20 Hz (10 to 200 times), this will allow you to perform all 3 calculations using numerical integration (instead of 200), and to calculate the coordinates of the satellites within the interval [t, t+10] use a polynomial of the form:

[xyz]=[a1a2a3]t2+[b1b2b3]t+[c1 c2c3]

Calculations show that the interpolation error does not exceed 1 mm.

In the preparation unit to simultaneously "raw" measurements and ephemeris 16 are grouped simultaneously "raw" measurement from the measurement modules of the controlled and reference points and the corresponding coordinates of the satellites that are passed to the filtering unit and control continuity of measurements 17 to filter and control the continuity of the measurements. In the filtration unit and control continuity of measurements 17 using the difference of the phase pseudorange measurements are identified and restored failures receiver when tracking the phase of the oscillations of the carrier frequency, and extrapolation from a single fallen measurements.

In block navigation tasks for the reference and controlled points 18 navigational task is solved independently for each of the monitored points using analytical method. This step clarifies the shift clock of the receiver sensor module from the system time. Formed a queue for processing data in blocks to solve the navigation task in differential mode "statics" 21, solving navigation tasks in differential mode is the "dynamics" 22, the solution of the navigation problem in differential mode "oscillations" 23, special treatment 24 to resolve them in a differential problem. Coordinate information and the time shift of each of the measuring module is filtered in the filtering unit of the calculated coordinates 19. In the block of data on the location and dynamics of the object 20 is formed statistics of averaged coordinates and the dynamics of the controlled points. Next, in blocks to solve the navigation task in differential mode "statics" 21, solving navigation tasks in differential mode dynamics 22, solving navigation tasks in differential mode "oscillations" 23, special processing 24 is information processing in differential mode to:

- determine the constant component of the baseline (processing mode "statics") (21);

- determine the deviation of the base line noise filtering (processing mode "dynamics" or "movement" - block) (22);

- determine the spectral parameters of the deviations of the baseline (processing mode "oscillations" - block) (23);

block special handle 24 is provided for other specific ways of processing information (for example, for high-precision control of subsidence structures without requirements for accuracy in the plane).

Unit conversion the calculated performance parameters soo is ugenia 25 the results of the processing are compared with threshold values for controlled structures and are formed, in particular, the alarms.

The display unit results 26 is designed to prepare information to the display, and the data transfer module external customers 27 - to represent its external customers (control centers, system simulation, decision support, and so on).

As a means of communication can be used, for example optical modem Jetcon 2401-mw, the interface Converter MOXAIA-240-LX-T, VDSL media Converter lanet VC-234.

In the process of testing a system for precision monitoring of displacements of engineering structures was carried out by tracking the displacements of structural elements of engineering structures (bridges, tall buildings and so on) on the three spatial coordinates by collecting and processing data from the sensor modules is controlled points, and measuring modules - control points.

Analysis of the obtained data showed the determination of the displacements of the controlled points with an error of 0.3-1 cm, the determination of the spectral characteristics of the displacements of the resonant frequencies of the structure) in the frequency range 0.1-10 Hz with an error of not more than 1 mm, which proves the achievement of the technical result.

System for precise monitoring of engineering structures containing measuring module, which includes a navigation antenna GPS/GLONASS, GLONASS/GPS, to ntroller non-volatile memory, transceiver communication module, battery, charger battery, sensor equipment measuring module; external sensor equipment, the automated workplace of the operator-based PC processor, while the device is charging the battery connected to the battery which is connected to the controller with nonvolatile memory, the output of the navigation antenna GPS/GLONASS connected to the input of GLONASS/GPS, input-output navigation receiver connected to the first input-output controller with nonvolatile memory, the second input-output of which is connected to the first input-output transceiver communication module, the second input-output which is used to communicate with the workstation operator-based PC with a processor through a communication Protocol TCP/IP, the output of sensor equipment measuring module is connected to the input of the controller non-volatile memory, the output of the external sensor equipment connected to the workstation operator-based PC with a processor through a communication Protocol TCP/IP, while the automated workplace of the operator-based PC processor has an output for transmitting information to external systems and dispatch centers, while rocessor PC workstation operator with the opportunity to:
- tracking the displacements of structural elements of engineering structures on the three spatial coordinates;
- collect data from the measuring module;
analysis of the received data and the determination of the displacements of the controlled points;
- determine the spectral characteristics of the displacements of the resonance frequencies of the structure;
- generate alarms in case of displacement controlled parameters beyond the established borders;
- display the results of processing information in an easy-to operator;
documenting and storing the received data.



 

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10 cl, 5 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method involves receiving signals from navigation spacecraft, amplification and correction thereof, monitoring codes and frequencies, calculating pseudoranges and pseudovelocities, correcting ionosphere errors and calculating coordinates of the consumer. The value of the ionosphere adjustment is determined by an empirical model of the required ionosphere parameter based on known parameters (geographic coordinates and time) and an additional parameter - solar activity index with one-time processing of the array of values of vertical PES in the ionosphere. Corresponding numerical values are selected from arrays of values of vertical PES, provided by different centres, followed by compression, filtration of the obtained array and forming an input numerical data array for subsequent calculation of ionosphere adjustments and absolute values of coordinates of the consumer. During one-time processing of the array of values of vertical PES in the ionosphere, input data from IONEX files are used to form a PES mode.

EFFECT: high accuracy of determining coordinates of a consumer by eliminating ionosphere errors.

4 cl, 5 dwg

FIELD: physics.

SUBSTANCE: network element (M) for generating backup data has a control element (M.1) for generating back up data relating to one or more base stations (S1, S2) of at least one navigation system, and a transmitting element (M.3.1) for transmitting back up data over a communication network (P) to a device (R). The positioning device (R) has a positioning receiver (R3) for positioning based on one or more signals transmitted by base stations (S1, S2) over at least one of the said satellite navigation systems; a receiver (R.2.2) for receiving back up data relating to at least one navigation system from the network element (M); and an analysis element (R.1.1) adapted for analysing the received back up data in order to detect information relating to the status of the said one or more signals from the base stations (S1, S2) of the navigation system. The said information relating to the status of the said one or more signals from the base stations (S1, S2) contain indicators to the base station (S1, S2) to which the signal relates, and the said status, which indicates suitability of the signal for using. The device (R) is adapted such that, the signal indicated as unsuitable for use is not used for positioning.

EFFECT: increased accuracy of determining location by providing the positioning device with a list of defective signals transmitted by a specific satellite.

29 cl, 6 dwg, 5 tbl

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