Dike project deformation detection system and detection method

Abstract

The invention discloses an embankment project deformation detection system and detection method, and the system comprises a passive calibration tail end which is fixed at a stable position of an embankment project; the passive working tail end is fixed at a to-be-detected position of the dike project; and the positioning host is used for acquiring relative position information of the passive calibration tail end and the passive working tail end and transmitting the position information to the information processing workstation. Acquiring relative position information of the positioning host and the passive calibration tail end; obtaining absolute position information of the positioning host according to the relative position information of the positioning host and the passive calibration tail end; acquiring relative position information of the passive working tail end and the positioning host; according to the absolute position information of the positioning host and the relative position information of the passive working tail end and the positioning host, obtaining the absolute position information of the passive working tail end; and obtaining deformation information according to the absolute position information of the passive working tail end in different time periods in the monitoring period. And the deformation of the dike project can be monitored in a non-contact manner.

Description

Technical Field

[0001] The present invention relates to the deformation detection of dike projects, and specifically to a deformation detection system and method for dike projects. Background Art

[0002] Dike projects generally consist of large dikes and protective projects such as dams, piers, and revetments, and have the functions of controlling the river regime and protecting the beach and dike. However, on the concave bank of a river bend, the dike project is affected by the head-on scouring of the river flow. Under the action of large floods or long-term scouring of the water flow, dangerous situations may occur. For example, due to factors such as sediment deposition and mainstream wandering in the lower reaches of the Yellow River, the flow pattern in front of the dikes of most spur dikes is relatively complex, and scour pits may be formed. The dike project near the scour pit will deform as the scour pit develops. When the scour pit develops to a certain extent, the dike project will collapse or slide due to excessive deformation, and in severe cases, even cause the dike to burst, thereby triggering floods and causing heavy losses to the lives and economic production of residents in the protected area. Therefore, the deformation of the dike project should be monitored in real time to timely detect dangerous situations and implement effective disposal, providing technical support for the scientific management of the dike project.

[0003] At present, the deformation monitoring of dike projects mainly adopts two methods: manual detection and sensors. By manually inspecting and detecting the root stones and slope protection, the apparent situation of major changes in the project can be understood, but the accuracy of the detection results cannot be ensured when encountering sundries, especially the danger during work is relatively high when there are large floods in the river. Moreover, due to the long line, manual inspection and detection cannot grasp the safety status of the dike project in real time. When using sensors such as distributed optical fibers to monitor the deformation of dikes, the installation and fixation requirements for the sensors are relatively strict, and optical fibers need to be laid in advance. Once the monitored part deforms too much, the optical fibers may be damaged and unable to be used. While using devices such as displacement sensors, gyroscopes, and GNSS can monitor the deformation of dike projects in real time, they can only monitor individual key parts, which belongs to point monitoring and cannot perform area monitoring on the dike body, revetment, and dangerous works of the dike project. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to provide a deformation detection system and method for dike projects to solve the problems existing in the above-mentioned existing methods.

[0005] Technical Solution: In a first aspect, some embodiments of the present disclosure propose a deformation detection system for dike projects, which includes: a passive calibration end fixed at a stable position of the dike project; a passive working end fixed at a position to be measured of the dike project; and a positioning host that obtains the relative position information of the passive calibration end and the passive working end and transmits the position information to an information processing workstation.

[0006] Optionally, in the above detection system, the passive calibration end and the working end are passive position sensors with unique identification codes.

[0007] Optionally, a wireless repeater is installed on the positioning host in the above detection system.

[0008] In a second aspect, some embodiments of the present disclosure propose a method for detecting deformation of a dike project. The detection method includes:

[0009] Obtain the relative position information between the positioning host and the passive calibration end;

[0010] Based on the relative position information between the positioning host and the passive calibration end, obtain the absolute position information of the positioning host;

[0011] Obtain the relative position information between the passive working end and the positioning host;

[0012] Based on the absolute position information of the positioning host and the relative position information between the passive working end and the positioning host, obtain the absolute position information of the passive working end;

[0013] Obtain deformation information based on the absolute position information of the passive working end at different time periods during the monitoring period.

[0014] Optionally, based on the relative position information between the positioning host and the passive calibration end, obtaining the absolute position information of the positioning host includes the following calculation formula:

[0015] X 主机 = X 定位 + ΔX1

[0016] Y 主机 = Y 定位 + ΔY1

[0017] H 主机 = H 峰位 + ΔH1

[0018] Wherein, the host refers to the positioning host, the positioning refers to the calibration end, X is the longitude, Y is the latitude, H is the elevation, ΔX1 is the longitude difference between the positioning host and the positioning end, ΔY1 is the latitude difference between the positioning host and the positioning end, and ΔH1 is the elevation difference between the positioning host and the positioning end.

[0019] Optionally, based on the absolute position information of the positioning host and the relative position information between the passive working end and the positioning host, obtaining the absolute position information of the passive working end includes the following calculation formula:

[0020] X 工作 = X 主机 + ΔX2

[0021] Y 工作= Y 主机 + ΔY2

[0022] H 工作 = H 主机 + ΔH2

[0023] Wherein, the working end refers to the end of the work, the host refers to the positioning host, X is the longitude, Y is the latitude, H is the elevation, ΔX2 is the longitude difference between the positioning host and the calibration end, ΔY2 is the latitude difference between the positioning host and the calibration end, and ΔH2 is the elevation difference between the positioning host and the calibration end.

[0024] Optionally, the deformation information is obtained according to the absolute position information of the passive working end at different time periods during the monitoring period, including the following calculation formulas:

[0025] ΔX i = X i - X i-1

[0026] ΔY i = Y i - Y i-1

[0027] ΔH i = H i - H i-1

[0028] Wherein, X i is the longitude of the working end at the i-th observation, Y i is the latitude of the working end at the i-th observation, H i is the elevation of the working end at the i-th observation, ΔX i is the longitude change of the working end at the i-th observation, ΔY i is the latitude change of the working end at the i-th observation, and ΔH i is the elevation change of the working end at the i-th observation.

[0029] Beneficial effects:

[0030] The embodiments of the present disclosure can perform non-contact monitoring on the deformation of the dike project, collect data using the calibration end, the working end and the host, and perform background processing through wireless transmission, realizing real-time monitoring, early warning and timely processing of the deformation of the dike project; in the embodiments of the present disclosure, both the calibration end and the working end are passive settings, which do not require prior wiring, are not restricted by the use environment, are convenient to use, and have good stability. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of the dike project deformation detection system; Figure 2 It is a schematic diagram of the dike project deformation detection method. Detailed Implementation Modes

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0033] The detection system of the present invention is composed of a positioning host, distributed positioning terminals, and an information processing workstation; the positioning host reads and identifies the position information of the distributed positioning terminals by using a wireless communication module, and the positioning host uses the wireless repeater carried thereon to send the position information to the information processing workstation. Among them, the distributed positioning terminals include calibration terminals and working terminals, both of which adopt a passive design, have a unique identification code, and are identified and read through the communication module of the positioning host.

[0034] The calibration terminals are fixed at stable positions of the dike project, with stable positions, and are used to determine the absolute position of the positioning host. The working terminals are fixed at the positions to be measured of the dike project and are used to determine the relative position between the positions where the terminals are located and the positioning host; the positioning host collects the data information of the working terminals to determine the relative position information between the working terminals and the positioning host. Then, the positioning host collects the data information of the calibration terminals to determine the absolute position information of the positioning host, and the absolute position information of the working terminals can be obtained through calculation. Finally, by comparing the current position information of the working terminals with the initial position information, non-contact displacement monitoring of the dike can be realized.

[0035] The specific process is as follows:

[0036] (1) The position information of the positioning terminals determines the absolute position of the host: After the positioning terminals are fixed at stable positions of the dike, equipment such as a GPS instrument is used to determine the absolute position (longitude, latitude, elevation) of the terminals. During each measurement, the positioning host uses a wireless model to identify the positioning terminals and reads the relative position (longitude difference and elevation difference) between the host and the terminals, and then the absolute position of the host is obtained through conversion based on the absolute position of the terminals;

[0037] The calculation formula for the absolute position of the positioning host is as follows:

[0038] X 主机 = X 定位 + ΔX1

[0039] Y 主机 = Y 定位 + ΔY1

[0040] H 主机 = H 定位 + ΔH1

[0041] Among them, the host refers to the positioning host, the positioning refers to the calibration terminal, X is the longitude, Y is the latitude, H is the elevation, ΔX1 is the longitude difference between the positioning host and the positioning terminal, ΔY1 is the latitude difference between the positioning host and the positioning terminal, and ΔH1 is the elevation difference between the positioning host and the positioning terminal.

[0042] (2) The positioning host determines the absolute spatial position of the working end: The positioning host identifies the working end, reads the relative position (longitude and latitude difference and elevation difference) between the host and the end, and then uses the absolute position of the host to calculate the absolute position (longitude, latitude, and elevation) of the end;

[0043] The formula for calculating the absolute spatial position of the working end is as follows:

[0044] X 工作 = X 主机 + ΔX2

[0045] Y 工作 = Y 主机 + ΔY2

[0046] H 工作 = H 主机 + ΔH2

[0047] Among them, the "working" refers to the working end, the "host" refers to the positioning host, X is the longitude, Y is the latitude, H is the elevation, ΔX2 is the longitude difference between the positioning host and the calibrated end, ΔY2 is the latitude difference between the positioning host and the calibrated end, and ΔH2 is the elevation difference between the positioning host and the calibrated end.

[0048] (3) Non-contact displacement monitoring: By comparing the absolute position information of the working end in previous times, the displacement change information of the position of the working end on the dike can be obtained, and thus non-contact displacement monitoring can be realized.

[0049] The formula for calculating the displacement change information of the working end is as follows:

[0050] ΔX i = X i - X i-1

[0051] ΔY i = Y i - Y i-1

[0052] ΔH i = H i - H i-1

[0053] Among them, X i is the longitude of the working end at the i-th observation, Y i is the latitude of the working end at the i-th observation, H i is the elevation of the working end at the i-th observation, ΔX i is the longitude change of the working end at the i-th observation, ΔY i is the latitude change of the working end at the i-th observation, ΔH iis the elevation change of the working end at the i-th observation.

[0054] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A deformation detection system for a dike project, characterized in that, Including: A passive calibration end, which is fixed at a stable position of the dike project; A passive working end, which is fixed at the position to be measured of the dike project; A positioning host, which obtains the relative position information between the passive calibration end and the passive working end and transmits the position information to the information processing workstation.

2. The deformation detection system for dike engineering according to claim 1, characterized in that The passive calibration end and the working end are passive position sensors with unique identification codes.

3. The deformation detection system for levee projects according to claim 1, wherein The positioning host is equipped with a wireless repeater.

4. A deformation detection method for a dike project, characterized in that, Including: Obtaining the relative position information between the positioning host and the passive calibration end; Obtaining the absolute position information of the positioning host according to the relative position information between the positioning host and the passive calibration end; Obtaining the relative position information between the passive working end and the positioning host; Obtaining the absolute position information of the passive working end according to the absolute position information of the positioning host and the relative position information between the passive working end and the positioning host; Obtaining the deformation information according to the absolute position information of the passive working end at different time periods during the monitoring period.

5. The deformation detection method for dike engineering according to claim 4, characterized in that, Obtaining the absolute position information of the positioning host according to the relative position information between the positioning host and the passive calibration end, including the following calculation formula: X 主机 = X 定位 + ΔX1 Y 主机 = Y 定位 + ΔY1 H 主机 = H 定位 + ΔH1 Wherein, the host refers to the positioning host, the positioning refers to the calibration end, X is the longitude, Y is the latitude, H is the elevation, ΔX1 is the longitude difference between the positioning host and the positioning end, ΔY1 is the latitude difference between the positioning host and the positioning end, and ΔH1 is the elevation difference between the positioning host and the positioning end.

6. The dike project deformation detection method according to claim 4, wherein Obtaining the absolute position information of the passive working end according to the absolute position information of the positioning host and the relative position information between the passive working end and the positioning host, including the following calculation formula: X 工作 = X 主机 + ΔH2 Y 工作 = Y 主机 + ΔY2 H 工作 = H 主机 + ΔH2 Wherein, the working refers to the working end, the host refers to the positioning host, X is the longitude, Y is the latitude, H is the elevation, ΔX2 is the longitude difference between the positioning host and the calibration end, ΔY2 is the latitude difference between the positioning host and the calibration end, and ΔH2 is the elevation difference between the positioning host and the calibration end.

7. The deformation detection method for dike engineering according to claim 4, characterized in that, Obtaining the deformation information according to the absolute position information of the passive working end at different time periods during the monitoring period, including the following calculation formula: ΔX i = X i - X i-1 ΔY i = Y i - Y i-1 ΔH i = H i - H i-1 Among them, X i is the longitude of the working end at the i-th observation, Y i is the latitude of the working end at the i-th observation, H i is the elevation of the working end at the i-th observation, ΔX i is the change in longitude of the working end at the i-th observation, ΔY i is the change in latitude of the working end at the i-th observation, ΔX i is the change in elevation of the working end at the i-th observation.

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