A method and device for monitoring the opening degree of a water conservancy project gate

Abstract

This application relates to the technical field of gate opening angle measurement, and specifically relates to a method and device for monitoring the opening of a water conservancy project gate. The method includes: obtaining the water discharge flow rate of the gate, the gate opening, and the wind speed, and obtaining the opening fluctuation coefficient of the current acquisition period; obtaining the wind speed influence coefficient based on the average level of the wind speed and the degree of fluctuation of the opening data, and combining the opening fluctuation coefficient to obtain the error influence degree; analyzing the coordination degree between the change in the gate opening and the change in the wind speed to obtain the wind influence index, and further obtaining the performance degradation index of the wire rope, calculating the aging index of the wire rope. If the aging index is less than the preset aging threshold, correcting the gate opening according to the error influence degree and the performance degradation index to monitor the opening of the water conservancy project gate; otherwise, replacing the wire rope and performing the gate opening monitoring again. This application can improve the monitoring accuracy of the opening of the water conservancy project gate.

Description

Technical Field

[0001] This application relates to the technical field of gate opening angle measurement, and specifically relates to a method and device for monitoring the opening of a water conservancy project gate. Background Art

[0002] The gate is a key facility for closing and opening the water discharge channel. Due to the critical location of the gate and the complex hydrological conditions, precise control and real-time monitoring of the gate are crucial. The gate opening, as the core parameter for realizing automatic control and remote management, plays an indispensable role in ensuring the safe and efficient operation of the water conservancy system.

[0003] In patent application CN117968595A, the gate state is evaluated by real-time detecting the gate opening and the cable tension; however, this method only directly verifies the gate opening data through the cable tension data to evaluate the gate state, without considering the influence of environmental changes on the collected gate opening data, so misdetection may occur; although patent CN110554655B analyzes the water level, flow velocity, etc., it compares the actual water flow velocity data with a preset threshold to control the opening of the gate, without monitoring the gate opening.

[0004] The rope displacement sensor is widely used in the field of gate opening monitoring due to its advantages of convenient installation, large measurement range, high precision, good sealing, etc. When the existing technology monitors the gate opening through the rope displacement sensor, although the error influence is considered, the filtering process is carried out through a fixed threshold, without deeply considering the aging degree of the steel wire rope and the influence of the environment, resulting in a poor monitoring effect of the gate opening. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of this application is to provide a method and device for monitoring the opening of a water conservancy project gate, and the specific technical solutions adopted are as follows:

[0006] An embodiment of this application provides a method for monitoring the opening of a water conservancy project gate, including the following steps:

[0007] Obtain the gate water discharge, gate opening, and wind speed in each acquisition period;

[0008] Based on the correlation between the gate opening and the water discharge in the current acquisition period, and combined with the mutation situation of the gate opening and the water discharge, obtain the opening fluctuation coefficient of the current acquisition period;

[0009] Based on the average wind speed level of each collection period and the degree of opening data fluctuation within the current collection period, obtain the wind speed influence coefficient of the current collection period, and combine the opening fluctuation coefficient to obtain the error influence degree of the current collection period;

[0010] Analyze the degree of coordination between the changes in the gate opening and the wind speed within each collection period adjacent to the current collection period to obtain the wind influence index of the current collection period. Analyze the differences in the wind influence indices of the current collection period relative to the adjacent collection periods to obtain the performance degradation index of the steel wire rope in the current collection period;

[0011] According to the performance degradation index and the wind speed influence coefficient of the current collection period, obtain the aging index of the steel wire rope in the current collection period. If it is less than the preset aging threshold, correct the gate opening according to the error influence degree and the performance degradation index to monitor the gate opening of the water conservancy project. Otherwise, replace the steel wire rope and monitor the gate opening again.

[0012] Preferably, the method for obtaining the opening fluctuation coefficient of the current collection period is as follows:

[0013] Form the opening sequence and the flow rate sequence of the current collection period from all the gate openings and the water discharge flow rates within the current collection period, obtain the Pearson correlation coefficient between the opening sequence and the flow rate sequence, respectively count the number of mutation points in the opening sequence and the flow rate sequence, and calculate the absolute difference between the two numbers of mutation points. Calculate the opening fluctuation coefficient of the current collection period according to the Pearson correlation coefficient and the absolute difference.

[0014] Preferably, the calculation method of the opening fluctuation coefficient X of the current collection period is as follows: ; where is a constant to avoid the denominator being 0, T is the absolute difference, and Y is the absolute value of the Pearson correlation coefficient.

[0015] Preferably, the method for obtaining the wind speed influence coefficient of the current collection period is as follows:

[0016] Statistical ratio of the average wind speed in the current collection period to the maximum value of the average wind speeds in all collection periods, and obtain the first-order difference sequence of the opening sequence in the current collection period, and obtain the variance of all elements within the first-order difference sequence. Multiply the ratio by the variance as the wind speed influence coefficient of the current collection period.

[0017] Preferably, the error influence degree of the current collection period is the product of the opening fluctuation coefficient and the wind speed influence coefficient of the current collection period.

[0018] Preferably, the method for obtaining the wind influence index of the current collection period is as follows:

[0019] Calculate the average value of the ratios of the elements in the first-order difference sequence of the opening degree sequence to the elements at the same positions in the wind speed sequence as the wind influence index for the current acquisition period, where all the wind speeds within the current acquisition period form the wind speed sequence of the current acquisition period.

[0020] Preferably, the calculation method of the performance degradation index of the steel wire rope in the current acquisition period is as follows:

[0021] ; where A is the performance degradation index of the steel wire rope in the current acquisition period; C is the wind influence index in the current acquisition period; B is the maximum value of the wind influence indexes of all adjacent acquisition periods in the current acquisition period, where the k acquisition periods closest to the current acquisition period are used as the adjacent acquisition periods of the current acquisition period; k is the number of adjacent acquisition periods; is the wind influence index of the t-th adjacent acquisition period.

[0022] Preferably, the aging index of the steel wire rope in the current acquisition period is the ratio of the performance degradation index in the current acquisition period to the wind speed influence coefficient.

[0023] Preferably, further correcting the gate opening according to the error influence degree and the performance degradation index further includes:

[0024] Perform filtering processing on the gate opening using a filtering algorithm to obtain the corrected gate opening, where the calculation method of the filtering algorithm window size is: ; where Q is the window size; is the initial window size, with a value range of 10 to 21; is the rounding function; is the exponential function with base e; L is the reciprocal of the product of the error influence degree and the performance degradation index in the current acquisition period.

[0025] The embodiment of the present application also provides a water conservancy project gate opening monitoring device, including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, it implements the steps of the water conservancy project gate opening monitoring method described in any one of the above.

[0026] As can be seen from the above, the water conservancy project gate opening monitoring method and device provided by the present application have at least the following beneficial effects:

[0027] In this application, a fluctuation coefficient of the opening degree is constructed to analyze the degree of co-variation between the gate opening degree and the water discharge flow rate. Subsequently, a wind speed influence coefficient is constructed to calculate the degree of fluctuation of the opening degree data, thereby further evaluating the error degree of the opening degree data. Finally, by combining historical data analysis, a performance degradation index is constructed to reflect the difference between the degree of influence of the wire rope under unit wind speed change and the historical data, so as to evaluate the aging degree of the wire rope.

[0028] Regarding the problem that the prior art only filters through a fixed threshold, resulting in poor monitoring effect of the gate opening degree, this application constructs an aging index to evaluate the performance change of the wire rope, and combines the error influence degree and the performance degradation index to adaptively adjust the filtering window of the filtering algorithm, enabling it to achieve the most suitable data correction in each acquisition cycle and improving the monitoring effect of the gate opening degree. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a flowchart of the steps of a method for monitoring the opening degree of a water conservancy project gate provided by the present application.

[0031] Figure 2 It is a side view schematic diagram of a rope displacement sensor provided by the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to further elaborate on the technical means and effects adopted by the present application to achieve the intended invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and effects of a method and device for monitoring the opening degree of a water conservancy project gate proposed according to the present application. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0033] Unless otherwise specified or limited, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a circuit structure, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the article or device including the said element. In addition, the term "and / or" used herein includes any and all combinations of any one of one or more related listed items. All technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs.

[0034] The following specifically describes the specific solutions of a water conservancy project gate opening monitoring method and device provided by this application in conjunction with the accompanying drawings.

[0035] Please refer to Figure 1 , which shows a step flowchart of a water conservancy project gate opening monitoring method provided by an embodiment of this application, including the following steps:

[0036] Step 1: Obtain the gate water discharge flow rate, gate opening degree, and wind speed within each acquisition period.

[0037] In this embodiment, a radar flowmeter is installed on the sluice wall behind the gate to collect the gate water discharge flow rate, a wind speed sensor is installed near the gate to collect wind speed data; and a wire rope displacement sensor is used to collect the gate opening degree data.

[0038] Among them, the side view schematic diagram of the wire rope displacement sensor is as Figure 2 shown, Figure 2 in which the upper measurement bracket 1 is located on the pier 4 of the sluice, and the rotary encoder of the wire rope displacement sensor is installed on the upper measurement bracket 1; the lower measurement bracket 3 is located on the upper arm of the gate, and the pull ring of the wire rope displacement sensor is installed on the lower measurement bracket 3; a wire rope 2 of the wire rope displacement sensor is arranged between the upper measurement bracket 1 and the lower measurement bracket 3, and the wire rope displacement sensor monitors the gate opening degree through the displacement of the wire rope.

[0039] In this embodiment, all data is collected once per second, and each collection duration is 30 minutes. After the data collection is completed, the data is transmitted to the PLC control center, and a flow rate sequence, a wind speed sequence, and an opening degree sequence of the current collection period are respectively constructed according to the time sequence of data collection. Then, a total of N historical collection period data is obtained from the database of the PLC control center. In this embodiment, N is taken as 50.

[0040] Furthermore, in order to eliminate the dimensional influence between the data, all the data are subjected to Z-score normalization processing. The specific normalization processing process is an existing well-known technology and will not be described in detail in this embodiment.

[0041] Step 2: Based on the correlation between the gate opening and the water discharge flow in the current collection period, and combined with the sudden changes in the gate opening and the water discharge flow, the opening fluctuation coefficient of the current collection period is obtained.

[0042] Since the discharge flow rate is primarily affected by the gate opening, the larger the gate opening, the greater the discharge flow rate, and there is a strong correlation between the two. Therefore, if the gate opening data collected by the wire rope displacement sensor fluctuates, while the corresponding discharge flow rate data does not change significantly, it can be seen that the wire rope is fluctuating due to aging or environmental factors, which increases the possibility of errors in the collected gate opening data.

[0043] Therefore, in this embodiment, gate opening changes are reflected by calculating the coordinated changes between the flow rate sequence and the opening sequence. First, the data from the most recent collection cycle is analyzed to determine whether the wire rope performance has deteriorated under the latest circumstances. In this embodiment, for ease of understanding and description, the most recent collection cycle is referred to as the current collection cycle.

[0044] The Pearson correlation coefficient between the opening sequence of the current acquisition period and the flow sequence of the current acquisition period is calculated. The absolute value of the Pearson correlation coefficient can reflect the overall trend consistency between the water flow and the gate opening. The smaller the value, the greater the possibility of error in the gate opening data.

[0045] Since the water discharge flow rate is strongly correlated with the gate opening under normal circumstances, the water discharge flow rate should also change significantly when the gate opening changes significantly.

[0046] Therefore, in this embodiment, the PELT mutation point detection algorithm is used to obtain the mutation points of the opening sequence and the flow sequence of the current acquisition period, and the number of mutation points in the opening sequence and the flow sequence is counted respectively, and the absolute difference between the two mutation points is calculated. The absolute difference can reflect the difference in the number of significant changes in the opening sequence and the flow sequence, thereby evaluating whether the opening sequence and the flow sequence still have a strong correlation.

[0047] Therefore, calculate the opening fluctuation coefficient X of the current acquisition period: Where, To avoid a constant with a denominator of 0, the value range is from 0 to 0.1, and the value in this embodiment is 0.01. T is the absolute difference, and Y is the absolute value of the Pearson correlation coefficient. The opening fluctuation coefficient can not only reflect whether the degree of trend co-variation between the opening sequence and the flow sequence is consistent, but also reflect whether the mutation time points and mutation time intervals of the opening sequence and the flow sequence are consistent, and whether the number of mutations that occur is consistent. If the opening fluctuation coefficient is larger, it reflects that the coordination between the opening sequence and the flow sequence is worse, and the error in the opening sequence is larger.

[0048] Step 3: Based on the average wind speed level of each collection period and the degree of fluctuation of the opening data within the current collection period, obtain the wind speed influence coefficient of the current collection period, and combine the opening fluctuation coefficient to obtain the error influence degree of the current collection period.

[0049] Furthermore, the influence of the wind speed in the current collection period on the gate opening can be evaluated by calculating the significance of the average wind speed in the current collection period in the historical data. Under normal circumstances, the opening of the gate is usually stable; when the opening needs to change, since the change in the gate opening is controlled to achieve smooth flow regulation, its change usually shows a continuous trend of continuous increase or continuous decrease, and there will be no frequent large fluctuations. However, if the steel wire rope of the rope displacement sensor is aged or severely affected by environmental factors, it will cause the collected gate opening data to fluctuate frequently and with a large amplitude.

[0050] Obtain the mean value of the wind speed sequence in each collection period, denoted as the average wind speed of each collection period. Statistically, the ratio of the average wind speed in the current collection period to the maximum value among the average wind speeds of all collection periods. The larger this ratio, the higher the average wind speed in the current collection period compared to the historical wind speed, and the greater the possible impact on the steel wire rope. For the convenience of understanding and expression, this ratio is denoted as the wind speed ratio in this embodiment.

[0051] Obtain the first-order difference sequence of the opening sequence in the current collection period, and obtain the variance of all elements within the first-order difference sequence, which is used to reflect the stability of the collected opening data. The larger the variance, the more frequent fluctuations occur in the collected opening data, and the greater the amplitude of the fluctuations, which is less in line with the gate operation characteristics, indicating that the possibility of the steel wire rope being aged or affected by the environment and having an error is greater.

[0052] Denote the product of the above wind speed ratio and the above variance as the wind speed influence coefficient of the current collection period. The wind speed influence coefficient can not only reflect whether the average wind speed in the current collection period is an extreme case in the historical collection period, but also reflect the degree of fluctuating change of the opening sequence, thereby further reflecting whether there are large errors in the collected opening data.

[0053] Denote the product of the opening fluctuation coefficient and the wind speed influence coefficient in the current acquisition period as the error influence degree in the current acquisition period. The error influence degree can reflect the degree to which the opening data collected by the guy wire displacement sensor in the current acquisition period is affected by environmental factors; the larger the error influence degree, the greater the error in the opening data.

[0054] Step 4: Analyze the coordination degree between the changes in the gate opening and the changes in the wind speed in each acquisition period adjacent to the current acquisition period, obtain the wind influence index in the current acquisition period, analyze the differences in the wind influence indices of the current acquisition period relative to each adjacent acquisition period, and obtain the performance degradation index of the steel wire rope in the current acquisition period.

[0055] Furthermore, it can be verified whether the steel wire rope in the current acquisition period has aged by comparing with the degree of change in the historical data of the gate opening.

[0056] In this embodiment, first calculate the ratio between each element in the first-order difference sequence of the opening sequence in the current acquisition period and the element at the same position in the first-order difference sequence of the wind speed sequence, and take the mean of all ratios as the wind influence index in the current acquisition period, which is used to reflect the average influence of the wind speed change on the gate opening when the gate opening is fixed. The larger the wind influence index, the greater the influence of the wind speed change on the fixed gate opening.

[0057] Considering that environmental factors will affect the collected opening data, it is first necessary to select historical acquisition periods with wind speeds relatively consistent with the current acquisition period from the historical wind speed data. Preferably, in this embodiment, the k acquisition periods closest to the current acquisition period are used as the adjacent acquisition periods of the current acquisition period, and the value of k in this embodiment is 8. Therefore, according to the above process of this embodiment, obtain the wind influence indices of all adjacent acquisition periods of the current acquisition period.

[0058] Furthermore, according to the differences in the wind influence indices of the current acquisition period relative to its adjacent acquisition periods, obtain the performance degradation index of the steel wire rope in the current acquisition period, and the calculation formula is: ; where A is the performance degradation index of the steel wire rope in the current acquisition period; C is the wind influence index in the current acquisition period; B is the maximum value of the wind influence indices of all adjacent acquisition periods of the current acquisition period; k is the number of adjacent acquisition periods; is the wind influence index of the t-th adjacent acquisition period.

[0059] In the above, The ratio is used to reflect the difference between the wind influence index in the current acquisition period and the maximum value in the adjacent acquisition periods. If If it is much greater than 1, it reflects that within the current acquisition cycle, the influence of unit wind speed on the steel wire rope far exceeds that of the adjacent acquisition cycles. It is used to reflect the difference degree between the wind speed influence in the current acquisition cycle and the historical cycles.

[0060] Therefore, the performance degradation index A can reflect whether the influence degree of wind speed on the steel wire rope in the current acquisition cycle significantly exceeds the historical data; if the performance degradation index A is larger, it reflects that within the current acquisition cycle, the change of unit wind speed has a greater impact on the gate opening degree, and far exceeds the historical influence. It also reflects that within the current acquisition cycle, due to performance aging of the steel wire rope, the possibility of being easily affected by the environment is greater, and the error of the acquired opening degree data is also greater.

[0061] Step Five: Obtain the aging index of the steel wire rope in the current acquisition cycle according to the performance degradation index and the wind speed influence coefficient in the current acquisition cycle. If it is less than the preset aging threshold, correct the gate opening degree according to the error influence degree and the performance degradation index to monitor the gate opening degree of the water conservancy project. Otherwise, replace the steel wire rope and monitor the gate opening degree again.

[0062] In this embodiment, the ratio of the performance degradation index of the current acquisition cycle to the wind speed influence coefficient is recorded as the aging index of the steel wire rope in the current acquisition cycle. If the aging index is larger, it indicates that the wind speed influence in the current acquisition cycle is smaller, but the degree of its opening fluctuation far exceeds the historical data, which can reflect that the steel wire rope ages due to long-term use, and the possibility of abnormal fluctuation of the gate opening degree is greater. It is necessary to replace the steel wire rope in time to ensure the accuracy of the gate opening degree monitoring.

[0063] First, evaluate the aging degree of the steel wire rope: Normalize the aging index of the steel wire rope in the current acquisition cycle. If the normalized aging index is less than the aging threshold, in this embodiment, the aging threshold is taken as 0.5, it reflects that the steel wire rope does not show aging phenomenon. At this time, there is no need to replace the steel wire rope, but it is necessary to correct the data according to the error degree of the acquired data. Specifically, correct the opening degree sequence in combination with the Savitzky-Golay filtering algorithm. If the error degree of the opening degree sequence is smaller, the window required by the Savitzky-Golay filtering algorithm is smaller to avoid overfitting and try to retain the detailed information of the opening degree sequence. If the error is larger, reflecting that the opening degree change is more complex, a larger window is required for filtering to reduce the interference of the error. Preferably, in this embodiment, the calculation method of the window size of the Savitzky-Golay filtering algorithm is:

[0064] ;

[0065] In the formula, Q is the window size; is the initial window size, ranging from 10 to 21, and in this embodiment, the value is 11; is the rounding function; is an exponential function with e as the base; L is the inverse of the product of the error impact of the current acquisition cycle and the performance degradation index. The smaller L is, the greater the error of the gate opening data. The larger the value, the larger the window size and the smaller the error interference.

[0066] The opening sequence of the current acquisition period is filtered by the Savitzky-Golay filtering algorithm. Since the window needs to be an odd number, the odd number closest to Q is used as the window size, and the polynomial order is 3. The opening sequence output by the Savitzky-Golay filtering algorithm is used as the corrected opening data, and the gate opening is monitored based on the corrected opening data.

[0067] If the normalized aging index is greater than or equal to the aging threshold, it indicates that the wire rope has aged within the time period corresponding to the current acquisition cycle. Therefore, the wire rope needs to be replaced, and the data needs to be re-collected and analyzed and corrected using the above-mentioned method and process of this embodiment, and the gate opening monitoring is performed again to ensure the accuracy of the gate opening monitoring of the water conservancy project.

[0068] Based on the same inventive concept as the above method, an embodiment of the present application also provides a water conservancy project gate opening monitoring device, including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the steps of any one of the above-mentioned water conservancy project gate opening monitoring methods are implemented.

[0069] It should be understood that the order in which the embodiments of the present application are presented is for illustrative purposes only and does not necessarily represent the superiority or inferiority of the embodiments. Furthermore, the foregoing descriptions of specific embodiments of this specification are provided. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential sequence shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0070] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0071] The above content is only an implementation method of the present application and is not intended to limit the scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the scope of protection of the present application.

Claims

1. A method for monitoring the opening degree of a gate in a water conservancy project, characterized in that, Including the following steps: Obtain the gate discharge flow rate, gate opening degree, and wind speed in each acquisition period; All the gate openings and discharge flows in the current acquisition period are respectively composed into an opening sequence and a flow sequence of the current acquisition period, the Pearson correlation coefficient between the opening sequence and the flow sequence is obtained, the number of mutation points in the opening sequence and the flow sequence is respectively counted, and the absolute difference between the two numbers of mutation points is calculated. According to the Pearson correlation coefficient and the absolute difference, the opening fluctuation coefficient of the current acquisition period is calculated. The calculation formula of the opening fluctuation coefficient X is: ; In the formula, is a constant to avoid a denominator of 0, T is the absolute difference, and Y is the absolute value of the Pearson correlation coefficient; Based on the average wind speed level in each acquisition period and the degree of fluctuation of the opening data in the current acquisition period, obtain the wind speed influence coefficient of the current acquisition period, and record the product of the opening fluctuation coefficient and the wind speed influence coefficient of the current acquisition period as the error influence degree of the current acquisition period; Analyze the degree of coordination between the change in the gate opening degree and the change in the wind speed in each acquisition period adjacent to the current acquisition period to obtain the wind influence index of the current acquisition period, analyze the difference in the wind influence index of the current acquisition period relative to the adjacent acquisition periods, and obtain the performance degradation index of the steel wire rope in the current acquisition period; Obtain the aging index of the steel wire rope in the current acquisition period according to the performance degradation index and the wind speed influence coefficient of the current acquisition period. If it is less than the preset aging threshold, correct the gate opening degree according to the error influence degree and the performance degradation index to monitor the gate opening degree of the water conservancy project. Otherwise, replace the steel wire rope and monitor the gate opening degree again.

2. The method for monitoring the opening degree of a water conservancy project gate according to claim 1, wherein The method for obtaining the wind speed influence coefficient of the current acquisition period is as follows: Statistically calculate the ratio between the average wind speed in the current acquisition period and the maximum value of the average wind speeds in all acquisition periods, obtain the first-order difference sequence of the opening sequence in the current acquisition period, and obtain the variance of all elements in the first-order difference sequence. Take the product of the ratio and the variance as the wind speed influence coefficient of the current acquisition period.

3. The method for monitoring the opening degree of a water conservancy project gate according to claim 1, wherein, The method for obtaining the wind influence index of the current acquisition period is as follows: Calculate the average value of the ratios of the elements in the first-order difference sequence of the opening sequence to the elements at the same positions in the wind speed sequence as the wind influence index of the current acquisition period, where all the wind speeds in the current acquisition period form the wind speed sequence of the current acquisition period.

4. The water conservancy project gate opening monitoring method according to claim 1, wherein The calculation method for the performance degradation index of the steel wire rope in the current acquisition period is as follows: ; where A is the performance degradation index of the steel wire rope in the current acquisition period; C is the wind influence index in the current acquisition period; B is the maximum value of the wind influence indices of all neighboring acquisition periods in the current acquisition period, where the k acquisition periods closest to the current acquisition period are used as the neighboring acquisition periods of the current acquisition period; k is the number of neighboring acquisition periods; is the wind influence index of the t-th neighboring acquisition period.

5. The method for monitoring the opening degree of a water conservancy project gate according to claim 1, characterized in that, The aging index of the steel wire rope in the current acquisition period is the ratio of the performance degradation index of the current acquisition period to the wind speed influence coefficient.

6. The method for monitoring the opening degree of a water conservancy project gate according to claim 1, characterized in that, The correction of the gate opening degree according to the error influence degree and the performance degradation index further includes: The filtering algorithm is used to filter the gate opening to obtain the corrected gate opening. Among them, the calculation method of the filtering algorithm window size is as follows: ; where Q is the window size; is the initial window size, and the value range is 10 to 21; is the rounding function; is the exponential function with base e; L is the reciprocal of the product of the error influence degree and the performance degradation index in the current acquisition period.

7. A monitoring device for the opening degree of a water conservancy project gate, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method for monitoring the gate opening degree of a water conservancy project according to any one of claims 1-6.

Images