Sluice displacement monitoring method and system

Abstract

The invention discloses a sluice displacement monitoring method and system, and relates to the sluice, dam and data processing technology, and the method comprises the steps: setting deformation monitoring points on dams at two sides of a sluice in advance; collecting image data of deformation monitoring points on two sides of the water gate at a fixed angle according to a set time interval, and reserving initial image data as a reference image; extracting a plurality of reference points from the reference image, and matching any image data acquired later with the reference image based on the reference points; calculating a deviation between the image data and the reference image; determining a first deformation quantity of the deformation monitoring point in the water flow direction according to the deviation; and determining the displacement range of the water gate according to the first deformation quantity. The acquired image data is compared with the initial image to determine the displacement of the deformation monitoring point in the water flow direction, so that the displacement of the water gate is converted, the displacement of the water gate can be automatically monitored for a long time, and the monitoring precision requirement is met.

Description

Technical Field

[0001] This application relates to the technical fields of sluices, dams, and data processing, and particularly relates to a method and system for monitoring the displacement of a sluice. Background Art

[0002] As the core control facility of a water conservancy project, the structural stability of a sluice is directly related to flood control safety and the efficiency of water resource dispatching. Affected by long-term hydraulic impact, foundation settlement, and material aging, the sluice is prone to cumulative displacement deformation. Once it exceeds the safety threshold, it will trigger risks such as the inclination of the sluice body or even dam break.

[0003] Monitoring the displacement of a sluice is to ensure the safety of a water conservancy project and prevent structural failure. The displacement amount is a key indicator for evaluating the safety level of a sluice, and long-term dynamic monitoring with centimeter-level accuracy needs to be implemented. However, the existing methods cannot meet the requirements of real-time, long-term, and automation. Summary of the Invention

[0004] Embodiments of this application provide a method and system for monitoring the displacement of a sluice, which can achieve long-term and automatic monitoring of the displacement of a sluice without changing the existing facilities and equipment and meet the monitoring accuracy requirements.

[0005] Embodiments of this application propose a method for monitoring the displacement of a sluice, including the following steps: Set deformation monitoring points on the dams on both sides of the sluice in advance; Collect image data of the deformation monitoring points on both sides of the sluice at a set time interval and at a fixed angle, and retain the initial image data as the reference image; Extract several reference points from the reference image, and match any image data collected later with the reference image based on the reference points; Based on the matching result, calculate the deviation between the image data and the reference image; According to the deviation, determine the first deformation amount of the deformation monitoring point in the water flow direction; According to the first deformation amount, determine the displacement range of the sluice.

[0006] Optionally, it further includes: Obtain the actual traction amount of each gate lifting; and the gate height of the gate under the actual traction amount; According to the actual traction amount and the gate height each time, calculate the displacement amount of the gate in the water flow direction before and after each gate lifting; Take the displacement amounts each time and the displacement range as the total displacement range of the sluice.

[0007] Optionally, the deformation monitoring point at least includes a reference part and a deformation monitoring part that are separately arranged; Extracting several reference points from the reference image includes: Extracting the contour information of the reference part, and determining a plurality of reference points distributed from an area at a specified pixel distance away from the reference part of the deformation monitoring part. The determined reference points are distributed in the deformation monitoring part, and there are multiple groups of reference points along the water flow direction, and the multiple groups of reference points are arranged staggeredly.

[0008] Optionally, matching any image data collected later with the reference image based on the reference points includes: Establishing the distance relationship between the contour information of the reference image and each reference point; Extracting the contour information of the reference part of any image data collected later; Mapping the distance relationship to the any image data according to the contour information collected later; Extracting the image features within a fixed range of each reference point in the reference image and the any image data for comparison using the extracted image features.

[0009] Optionally, establishing the distance relationship between the contour information of the reference image and each reference point includes: Selecting reference points along the contour information of the reference image and determining the pixel distance between the reference points and any reference point; Adjusting the positions of the selected reference points so that each reference point is matched to a reference point, and the pixel distance between the reference point and the matched reference point is within a set distance range.

[0010] Optionally, using the extracted image features for comparison includes: Calculating the similarity between the image features within a fixed range of corresponding pairs of reference points; Determining at least one first path of similarity change along the water flow direction according to the calculated similarity and each group of reference points. The first path is formed by connecting at least two reference points.

[0011] Optionally, calculating the deviation between the image data and the reference image based on the matching result includes: Extracting the local images within a fixed range of the reference points with similarity change in the first path based on the reference image and the image data; Overlapping the two local images and adjusting the transparency of any one of the local images; Offsetting any one of the local images, calculating the clarity of the overlapping area after offsetting, and recording the offset amount and offset position that make the clarity of the overlapping area the largest to determine the deviation.

[0012] Optionally, determining the first deformation amount of the deformation monitoring point in the water flow direction according to the deviation includes: Construct a deformed second path according to the recorded offset amount and offset position; Calculate the position deviation between the second path and the first path; Map the position deviation to the water flow direction to obtain the first deformation amount.

[0013] Optionally, determining the displacement range of the sluice according to the first deformation amount includes: Obtain the lateral width of the gate slot of the sluice; Determine the displacement range of the sluice according to the proportional relationship between the first deformation amount and the lateral width.

[0014] An embodiment of the present application also provides a sluice displacement monitoring system, including a processor and a memory, where a computer program is stored on the memory, and when the computer program is executed by the processor, the steps of the sluice displacement monitoring method as described above are implemented.

[0015] The method of the embodiment of the present application collects image data of deformation monitoring points on both sides of the sluice at a fixed angle, and compares the collected image data with the initial image to determine the displacement amount of the deformation monitoring point in the water flow direction, so as to calculate the sluice displacement. The present application can realize long-term and automatic monitoring of the sluice displacement and meet the monitoring accuracy requirements.

[0016] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the specific embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 It is a schematic diagram of the basic process of the sluice displacement monitoring method of this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0019] An embodiment of the present application proposes a method for monitoring the displacement of a sluice, as Figure 1 shown, including the following steps: In step S101, deformation monitoring points are pre-set on the dams on both sides of the sluice. In some embodiments, deformation monitoring points can be set on the dams corresponding to the flood channels on both sides of the sluice outlet, and can be set near the sluice. In a specific example, the deformation monitoring points at least include a reference part and a deformation monitoring part that are separately arranged, wherein the reference part and the deformation monitoring part can be connected by an elastic member. Thus, due to the elastic connection, the reference part hardly generates a deformation effect, while the deformation monitoring part is connected to the dam body and deforms as the dam body deforms. The material used for the deformation monitoring part is close to that of the dam body.

[0020] In step S102, image data of the deformation monitoring points on both sides of the sluice are collected at a set time interval and at a fixed angle, and the initial image data is retained as a reference image. The image data can be collected by using the original monitoring equipment on the dam, or fixed monitoring points can be set, and the inspection equipment can be used to collect the image data.

[0021] In step S103, several reference points are extracted from the reference image, and any image data collected later is matched with the reference image based on the reference points. In a specific example, in some examples, the deformation or displacement conditions of the fixed monitoring points in each direction are judged by the matching of the reference points.

[0022] In step S104, based on the matching result, the deviation between the image data and the reference image is calculated, that is, the deformation information of the deformation monitoring points is determined through this deviation value.

[0023] In step S105, according to the deviation, the first deformation amount of the deformation monitoring points in the water flow direction is determined. The first deformation amount in the water flow direction is determined according to the component of the deformation information obtained above.

[0024] In step S106, according to the first deformation amount, the displacement range of the sluice is determined. The displacement range of the sluice is determined by mapping the first deformation amount to the deformation of the corresponding gate slot of the gate.

[0025] The method of the embodiment of the present application collects image data of the deformation monitoring points on both sides of the sluice at a fixed angle, and compares the collected image data with the initial image to determine the displacement of the deformation monitoring points in the water flow direction, so as to calculate the displacement of the sluice. The present application can realize long-term and automatic monitoring of the sluice displacement and meet the monitoring accuracy requirements.

[0026] In some embodiments, it further includes: obtaining the actual traction amount of each gate lifting; and the gate height of the gate under the actual traction amount. In a specific example, the actual traction amount can be obtained through the actual traction amount of the tractor, and the gate height can be obtained through the position sensor of the lifted gate.

[0027] According to the actual traction amount and the gate height each time, calculate the displacement of the gate in the water flow direction before and after each gate lifting. It can be based on the actual traction amount and the gate height as an approximate triangle, and by calculating the minimum side, the displacement of the gate in the water flow direction before and after each gate lifting can be obtained.

[0028] Take the displacements and the displacement range each time as the total displacement range of the sluice. In view of the fact that the sluice may have a small displacement under the impact of water flow during the opening process, the present application integrates the displacement monitoring of the sluice by monitoring the deformation monitoring points and the possible movement range of the gate itself. By calculating the displacement before and after gate lifting, the data volume of the sluice displacement monitoring can be effectively supplemented, and the accuracy of automatic monitoring can be improved.

[0029] In some embodiments, extracting several reference points from the reference image includes: Extract the contour information of the reference part, that is, the outer contour line of the reference part.

[0030] Furthermore, determine multiple reference points distributed in the area at a specified pixel distance away from the reference part in the deformation monitoring part. The determined reference points are distributed in the deformation monitoring part, and there are multiple groups of reference points along the water flow direction, and the multiple groups of reference points are arranged staggeredly. Determining multiple groups of reference points in the area at a specified pixel distance away from the reference part can make the distance between points as long as possible in subsequent examples, so as to reduce the matching error caused by the short pixel distance.

[0031] In some embodiments, matching any image data collected later with the reference image based on the reference points includes: Establish the distance relationship between the contour information of the reference image and each reference point. For example, a certain number of reference points can be selected from the contour information line, and the reference points are connected to establish the distance relationship.

[0032] Extract the contour information of the reference part of any image data collected later.

[0033] According to the subsequently acquired contour information, map the distance relationship to any of the image data, that is, directly map the distance relationship formed in the original reference image to any of the image data based on the contour information of the reference part that is approximately non-deformable, according to the length and angle of the line segment.

[0034] Extract the image features within a fixed range of each reference point in the reference image and any of the image data for comparison using the extracted image features. For example, a range of 50 pixels * 50 pixels for the reference point can be selected for feature comparison, and the specific range can be set according to actual needs.

[0035] In some embodiments, establishing the distance relationship between the contour information of the reference image and each reference point includes: Select reference points along the contour information of the reference image and determine the pixel distance between the reference point and any reference point, that is, determine the pixel distance of the line segment connecting the reference point and any reference point.

[0036] Adjust the position of the selected reference point so that each reference point is matched to a reference point, and the pixel distance between the reference point and the matched reference point is within a set distance range. By changing the position of the reference point or connecting it to other reference points, the pixel distance between the reference point and the reference point is changed. In this application, by controlling the pixel distance within the set distance range, it is ensured that the possible errors in the mapped pixel distance are similar, thereby improving the accuracy of monitoring.

[0037] In some embodiments, comparing using the extracted image features includes: Calculate the similarity between the image features within a fixed range of corresponding pairs of reference points. By introducing the similarity of the image features within the fixed range, the feature deviation caused by possible offsets can be further highlighted.

[0038] According to the calculated similarity and each group of reference points, determine at least one first path with a change in similarity along the water flow direction. The first path is formed by connecting at least two reference points. The selected first path can include at least one point with the maximum similarity as a base point, and other reference points with different similarities are distributed on the first path.

[0039] In some embodiments, calculating the deviation between the image data and the reference image based on the matching result includes: Based on the reference image and the image data, extract the local images within a fixed range corresponding to the reference points with a change in similarity in the first path.

[0040] Overlap the two local images and adjust the transparency of any of the local images.

[0041] Offset any of the local images, calculate the sharpness of the overlapping area after offset, and record the offset amount and offset position that maximize the sharpness of the overlapping area to determine the deviation. For cases without deformation or displacement, changing the transparency of either image after the two local images overlap will not cause a change in sharpness. In cases where the calculated similarity is different, small-range position offsets are used to determine possible deformation situations (i.e., the recorded offset amount and offset position).

[0042] In some embodiments, determining the first deformation amount of the deformation monitoring point in the water flow direction according to the deviation includes: According to the recorded offset amount and offset position, construct a deformed second path. In a specific example, the offset situation corresponding to the deformation situation can be used to determine the actual position of any reference point after deformation, thereby constructing the second path.

[0043] Calculate the position deviation between the second path and the first path. For example, if the original first path is a straight line along the water flow direction, but according to the monitored deviation, the length of the straight line becomes longer, or there are bends, etc., it indicates that the dam body may have displacement or deformation.

[0044] Map the position deviation to the water flow direction to obtain the first deformation amount. In the embodiments of the present application for the displacement monitoring of the sluice, by mapping the position deviation to the water flow direction, the possible deformation amount of the dam body in the flow direction can be obtained.

[0045] In some embodiments, determining the displacement range of the sluice according to the first deformation amount includes: Obtain the lateral width of the gate slot of the sluice. In a specific example, in the case of no gate slot, a fixed initial gate slot width can be set according to the width of the gate.

[0046] Determine the displacement range of the sluice according to the proportional relationship between the first deformation amount and the lateral width.

[0047] The method of the present application monitors the possible deformation of the dam body in the flow direction through the deformation monitoring point, thereby further judging the possible displacement amount of the sluice. The method of the present application can realize the monitoring of the sluice displacement without adding other equipment, and reuse the existing facilities and equipment to realize the long-term and automatic monitoring of the gate.

[0048] The embodiments of the present application also propose a sluice displacement monitoring system, including a processor and a memory. A computer program is stored on the memory, and when the computer program is executed by the processor, the steps of the sluice displacement monitoring method as described above are implemented.

[0049] Moreover, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure having equivalent elements, modifications, omissions, combinations (e.g., schemes that cross various embodiments), adaptations, or alterations. It is not limited to the examples described in this specification or during the implementation of this application, and the examples will be construed as non-exclusive.

[0050] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of their aspects) can be used in combination with each other. For example, those of ordinary skill in the art can use other embodiments when reading the above description.

[0051] The above embodiments are only exemplary embodiments of the present disclosure. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present disclosure, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A method for monitoring the displacement of a sluice, characterized in that, It includes the following steps: Set deformation monitoring points on the dams on both sides of the sluice in advance; Collect image data of the deformation monitoring points on both sides of the sluice at a set time interval and at a fixed angle, and retain the initial image data as the reference image; Extract several reference points from the reference image, and match any image data collected later with the reference image based on the reference points; Calculate the deviation between the image data and the reference image based on the matching result; Determine the first deformation amount of the deformation monitoring point in the water flow direction according to the deviation; Determine the displacement range of the sluice according to the first deformation amount; 2. The sluice displacement monitoring method according to claim 1, characterized in that It also includes: Obtain the actual traction amount for each gate lifting; and the gate height of the gate under the actual traction amount; Calculate the displacement amount of the gate in the water flow direction before and after each gate lifting according to the actual traction amount and the gate height each time; Take the displacement amounts each time and the displacement range as the total displacement range of the sluice; 3. The method for monitoring the displacement of a sluice according to claim 1, wherein The deformation monitoring points at least include a reference part and a deformation monitoring part that are separately arranged; Extracting several reference points from the reference image includes: Extract the contour information of the reference part, and determine a plurality of reference points distributed in the area at a specified pixel distance away from the reference part of the deformation monitoring part. The determined reference points are distributed in the deformation monitoring part, and there are multiple groups of reference points along the water flow direction, and the multiple groups of reference points are arranged staggeredly; 4. The method for monitoring the displacement of the sluice according to claim 3, wherein Matching any image data collected later with the reference image based on the reference points includes: Establish the distance relationship between the contour information of the reference image and each reference point; Extract the contour information of the reference part of any image data collected later; Map the distance relationship to the any image data according to the contour information collected later; Extract the image features within a fixed range of each reference point in the reference image and the any image data to perform comparison using the extracted image features; 5. The sluice displacement monitoring method according to claim 4, wherein, Establishing the distance relationship between the contour information of the reference image and each reference point includes: Select reference points along the contour information of the reference image and determine the pixel distance between the reference points and any reference point; Adjust the positions of the selected reference points so that each reference point is matched to a reference point, and the pixel distance between the reference point and the matched reference point is within a set distance range; 6. The sluice displacement monitoring method according to claim 4, wherein, Performing comparison using the extracted image features includes: Calculate the similarity between the image features within a fixed range of corresponding pairwise reference points; Determine at least one first path with similarity change along the water flow direction according to the calculated similarity and each group of reference points. The first path is formed by connecting at least two reference points; 7. The sluice displacement monitoring method according to claim 6, wherein Calculating the deviation between the image data and the reference image based on the matching result includes: Based on the reference image and the image data, extract the local images within a fixed range of the reference points with similarity change in the first path; Overlap the two local images and adjust the transparency of any one of the local images; Offset any of the local images, calculate the sharpness of the overlapping area after offset, and record the offset amount and offset position that maximize the sharpness of the overlapping area to determine the deviation.

8. The sluice displacement monitoring method according to claim 7, wherein, Determining a first deformation amount of the deformation monitoring point in the water flow direction according to the deviation includes: Construct a second deformed path according to the recorded offset amount and offset position; Calculate the position deviation between the second path and the first path; Map the position deviation to the water flow direction to obtain the first deformation amount.

9. The sluice displacement monitoring method according to claim 1, characterized in that, Determining the displacement range of the sluice according to the first deformation amount includes: Obtain the lateral width of the gate slot of the sluice; Determine the displacement range of the sluice according to the proportional relationship between the first deformation amount and the lateral width.

10. A sluice displacement monitoring system, characterized in that, It includes a processor and a memory, and a computer program is stored on the memory. When the computer program is executed by the processor, the steps of the sluice displacement monitoring method according to any one of claims 1 to 9 are implemented.

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