Early warning method and system for flood discharge

Abstract

The invention provides an early warning method and system for flood discharge, and the method comprises the steps: collecting the reservoir data of a current moment through a sensor which is disposed in advance, and carrying out the preprocessing of the reservoir data, and obtaining the preprocessed reservoir data; determining the flood discharge amount at the current moment according to the preprocessed reservoir data; determining an early warning strategy at the current moment according to the flood discharge quantity at the current moment; and performing early warning based on the early warning strategy at the current moment. According to the technical scheme provided by the invention, the flood discharge amount can be accurately calculated, and the intelligence and precision of flood discharge early warning are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of water conservancy project early warning, and in particular to an early warning method and system for flood discharge. Background Art

[0002] With the increase of global climate change and extreme weather events, the safety of reservoirs and water conservancy projects has gradually attracted great attention from all countries. Especially in the management of large reservoirs, flood warning systems have been widely used as an important measure to ensure the safety of residents and facilities in downstream areas. Traditional flood warning systems mainly rely on manual monitoring and historical experience, combined with some simple sensor equipment to monitor the water level of reservoirs. With the advancement of sensor technology and communication technology, more and more flood warning systems have begun to gradually develop in the direction of automation and intelligence. These systems usually combine real-time data acquisition, remote monitoring and warning systems to improve the monitoring capabilities of reservoir safety. However, the existing systems still have certain limitations in the accuracy of the model, the response speed of signal triggering, and the way of information transmission, and it is difficult to fully adapt to the complex and changeable natural environment.

[0003] In the existing technology, most of the existing flood discharge warning systems are based on a fixed threshold trigger mechanism, usually relying on a single variable such as reservoir water level or rainfall, lacking the real-time processing capability of multi-dimensional data, and historical flood discharge records are often ignored. It is difficult to dynamically adjust the flood discharge strategy by simply adding fixed weights. Most of the existing systems lack real-time monitoring of the downstream water level, which makes it easy to cause excessive or insufficient flood discharge under extreme weather conditions, affecting downstream safety. When detecting switch signals, the existing flood discharge warning system often finds it difficult to achieve accurate time judgment, resulting in false triggering or repeated execution of signals, increasing the maintenance cost of the system and reducing the accuracy and efficiency of the warning system. The existing technology is difficult to achieve real-time feedback and intelligent self-inspection of the operation of reservoir equipment. Warning information and flood discharge operations are often delayed or inaccurate, and cannot fully guarantee safety under complex hydrological conditions. Therefore, it is urgent to propose a precise and intelligent flood discharge warning solution. Summary of the invention

[0004] The present application provides a flood discharge warning method and system to at least solve the technical problems of low accuracy and intelligence of flood discharge warning in the prior art.

[0005] The first embodiment of the present application provides an early warning method for flood discharge, the method comprising:

[0006] Using pre-deployed sensors to collect reservoir data at the current moment, and pre-processing the reservoir data to obtain pre-processed reservoir data;

[0007] Determining the flood discharge volume at the current moment according to the preprocessed reservoir data;

[0008] Determining an early warning strategy at the current moment according to the flood discharge volume at the current moment;

[0009] An early warning is issued based on the early warning strategy at the current moment.

[0010] Preferably, the pre-deployed sensors include:

[0011] Radar water level sensors deployed in the catchment area upstream of the reservoir, the entrance of the flood discharge channel, and the river channel downstream of the reservoir;

[0012] Rainfall sensors placed above the reservoir’s catchment area;

[0013] Flow velocity sensors deployed in the river channel downstream of the reservoir;

[0014] The reservoir data include: upstream water level, downstream water level, rainfall and water flow rate.

[0015] Further, the preprocessing of the reservoir data to obtain preprocessed reservoir data includes:

[0016] The reservoir data is filtered, abnormal data is kicked out, abnormal data is corrected and normalized in turn.

[0017] Further, determining the flood discharge volume at the current moment according to the preprocessed reservoir data includes:

[0018] Determine the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge according to the upstream water level, the downstream water level and the rainfall;

[0019] Determine the cumulative impact of historical flood discharge records on flood discharge volume based on the upstream and downstream water levels at each moment in the historical period;

[0020] Determine the current impact value of the water flow velocity on the flood discharge according to the upstream water level, the downstream water level and the water flow velocity;

[0021] The flood discharge volume at the current moment is determined according to the cumulative impact value of the upstream and downstream water levels and rainfall on the flood discharge volume, the cumulative impact value of the historical flood discharge records on the flood discharge volume, and the current impact value of the water flow velocity on the flood discharge volume.

[0022] Furthermore, the calculation formula of the flood discharge at the current moment is as follows:

[0023]

[0024] Where Q(t) is the flood discharge corresponding to the current time t, A(t) is the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge corresponding to the current time t, B(t) is the cumulative impact of the historical flood discharge records on the flood discharge corresponding to the current time t, C(t) is the current impact of the water flow velocity on the flood discharge corresponding to the current time t, and gτ is the small change in the time variable t.

[0025] Furthermore, determining the early warning strategy at the current moment according to the flood discharge volume at the current moment includes:

[0026] Obtaining preset flood discharge threshold intervals, switch signals of each flood discharge threshold interval, priorities of each switch signal, and early warning strategies corresponding to the switch signals of each flood discharge threshold interval;

[0027] The warning strategy corresponding to the flood discharge volume at the current moment is determined based on the preset flood discharge volume threshold intervals, the switch quantity signals of each flood discharge volume threshold interval, the priority of each switch quantity signal, and the warning strategy corresponding to the switch quantity signals of each flood discharge volume threshold interval.

[0028] Furthermore, the method further comprises:

[0029] Regularly detect switch signals and execute corresponding early warning strategies.

[0030] Furthermore, the method further comprises:

[0031] Collect signal detection and execution status, device status information, device response performance and abnormal conditions, and generate a self-test report.

[0032] The second embodiment of the present application provides an early warning system for flood discharge, including:

[0033] A collection module, used to collect reservoir data at the current moment using pre-deployed sensors, and pre-process the reservoir data to obtain pre-processed reservoir data;

[0034] A first determination module, used to determine the flood discharge volume at the current moment according to the preprocessed reservoir data;

[0035] A second determination module is used to determine the warning strategy at the current moment according to the flood discharge volume at the current moment;

[0036] The early warning module is used to issue an early warning based on the early warning strategy at the current moment.

[0037] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in the first aspect is implemented.

[0038] A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect of the present application.

[0039] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0040] This application proposes a flood discharge warning method and system, the method comprising: using pre-deployed sensors to collect reservoir data at the current moment, and preprocessing the reservoir data to obtain preprocessed reservoir data; determining the flood discharge volume at the current moment according to the preprocessed reservoir data; determining the warning strategy at the current moment according to the flood discharge volume at the current moment; and issuing a warning based on the warning strategy at the current moment. The technical solution proposed in this application can accurately calculate the flood discharge volume, ensuring the intelligence and precision of flood discharge warning.

[0041] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0043] Figure 1 A flowchart of a flood warning method provided according to an embodiment of the present application;

[0044] Figure 2 A detailed flow chart of a flood warning method provided according to an embodiment of the present application

[0045] Figure 3 A first structural diagram of an early warning system for flood discharge provided according to an embodiment of the present application;

[0046] Figure 4 This is a second structural diagram of an early warning system for flood discharge provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0048] The present application proposes a flood discharge warning method and system, the method comprising: using pre-deployed sensors to collect reservoir data at the current moment, and preprocessing the reservoir data to obtain preprocessed reservoir data; determining the flood discharge volume at the current moment according to the preprocessed reservoir data; determining the warning strategy at the current moment according to the flood discharge volume at the current moment; and issuing a warning based on the warning strategy at the current moment. The technical solution proposed in the present application can accurately calculate the flood discharge volume, ensuring the intelligence and precision of flood discharge warning.

[0049] The following describes an early warning method and system for flood discharge according to an embodiment of the present application with reference to the accompanying drawings.

[0050] Embodiment 1

[0051] Figure 1 A flowchart of a flood warning method provided according to an embodiment of the present application is shown in FIG. Figure 1 As shown, the method includes:

[0052] Step 1: Use pre-deployed sensors to collect reservoir data at the current moment, and pre-process the reservoir data to obtain pre-processed reservoir data.

[0053] It should be noted that the pre-deployed sensors include:

[0054] Radar water level sensors deployed in the catchment area upstream of the reservoir, the entrance of the flood discharge channel, and the river channel downstream of the reservoir;

[0055] Rainfall sensors placed above the reservoir’s catchment area;

[0056] Flow velocity sensors deployed in the river channel downstream of the reservoir;

[0057] The reservoir data include: upstream water level, downstream water level, rainfall and water flow rate.

[0058] It should be noted that radar water level sensors are deployed in the catchment area and flood discharge channel entrance upstream of the reservoir and in the river channel downstream of the reservoir to ensure comprehensive monitoring of reservoir water level changes;

[0059] Deploy rainfall sensors above the reservoir’s catchment area to ensure that all precipitation data entering the reservoir is collected. Choose open terrain to avoid being blocked by trees or buildings to ensure accurate rainfall measurement.

[0060] Deploy flow velocity sensors in the river channel downstream of the reservoir to monitor the changes in water velocity during flood discharge and ensure that accurate flow velocity data is used when calculating the flood discharge volume. This location can directly reflect the impact of the flood discharge on the downstream;

[0061] Set the sensor collection frequency to collect real-time reservoir data from the sensor. The real-time reservoir data includes upstream water level, downstream water level, rainfall and water flow rate;

[0062] The collected real-time reservoir data is transmitted to the reservoir central station.

[0063] By rationally deploying radar water level sensors, rainfall sensors and flow velocity sensors, comprehensive real-time monitoring of water levels, rainfall and water flow velocities upstream and downstream of the reservoir can be achieved, ensuring that the flood discharge warning system can accurately obtain key hydrological data, guarantee the accuracy and timeliness of flood discharge calculations, effectively improve the scientific nature of flood discharge scheduling, reduce flood risks in downstream areas, and improve the efficiency and safety of overall reservoir management.

[0064] In the embodiment of the present disclosure, the preprocessing of the reservoir data to obtain the preprocessed reservoir data includes:

[0065] The reservoir data is filtered, abnormal data is kicked out, abnormal data is corrected and normalized in turn.

[0066] It should be noted that the preprocessing includes filtering the environmental noise and signal interference in the real-time reservoir data, identifying the abnormal data in the real-time reservoir data, and correcting the abnormal data using the interpolation method;

[0067] The preprocessed real-time reservoir data is normalized.

[0068] By filtering out environmental noise and signal interference, the accuracy of real-time reservoir data is improved. Abnormal data identification and interpolation correction effectively avoid data deviation and ensure data integrity and continuity. Normalization processing makes the data more comparable and consistent in subsequent analysis, thereby enhancing the accuracy and stability of the system's flood discharge decisions.

[0069] Step 2: Determine the flood discharge volume at the current moment according to the preprocessed reservoir data.

[0070] In the embodiment of the present disclosure, step 2 specifically includes:

[0071] Determine the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge according to the upstream water level, the downstream water level and the rainfall;

[0072] Determine the cumulative impact of historical flood discharge records on flood discharge volume based on the upstream and downstream water levels at each moment in the historical period;

[0073] Determine the current impact value of the water flow velocity on the flood discharge according to the upstream water level, the downstream water level and the water flow velocity;

[0074] The flood discharge volume at the current moment is determined according to the cumulative impact value of the upstream and downstream water levels and rainfall on the flood discharge volume, the cumulative impact value of the historical flood discharge records on the flood discharge volume, and the current impact value of the water flow velocity on the flood discharge volume.

[0075] The calculation formula of the flood discharge volume at the current moment is as follows:

[0076]

[0077] Where Q(t) is the flood discharge corresponding to the current time t, A(t) is the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge corresponding to the current time t, B(t) is the cumulative impact of the historical flood discharge records on the flood discharge corresponding to the current time t, C(t) is the current impact of the water flow velocity on the flood discharge corresponding to the current time t, and gτ is the small change in the time variable t.

[0078] It should be noted that before calculating the flood discharge at the current moment, it is necessary to construct a flood discharge impact model and then calculate the flood discharge of the flood discharge warning system.

[0079] The impact of rainfall will gradually fade over time. An exponential decay function is used to simulate the attenuation effect of rainfall on flood discharge. The expression is: Among them, λ1 represents the attenuation coefficient of the influence of rainfall on flood discharge. As time goes by, the influence of rainfall will gradually weaken. r(τ) represents the rainfall at time point τ in the time interval [0, t], and τ represents the time-integrated variable.

[0080] In the flood discharge model, rainfall is a dynamically changing variable. Usually, the change of rainfall is extremely extreme and may fluctuate violently in a short period of time. Simply introducing rainfall linearly into the formula will cause the flood discharge to change too violently with rainfall, which will make the system very sensitive to heavy rain or rainstorms and difficult to buffer sudden large amounts of rainfall. In order to smooth the impact of rainfall, a logarithmic function is introduced, and the expression is: log(1+r(τ)), where r(τ) represents the rainfall at time point τ in the time interval [0,t], and τ represents the time-integrated variable;

[0081] The logarithmic function can naturally "smooth" the large fluctuations in rainfall, because the logarithmic function changes faster when the input value is small, and changes more slowly when the input value is large. When it rains less, the adjustment of flood discharge is more sensitive, and when it rains more, the system reaction will be relatively slow, avoiding the system's overreaction to extreme rainfall.

[0082] In the flood discharge model, the downstream water level has an important constraint on the flood discharge operation. When the downstream water level is high, excessive flood discharge may lead to downstream flood disasters. Due to the large fluctuation of the downstream water level, directly introducing it linearly may cause the model to overreact to these fluctuations. The trigonometric function is used to describe the periodic effect of the downstream water level on the flood discharge. The expression is: sin(α1h d (τ)), where h d (τ) represents the downstream water level at time point τ in the time interval [0, t],

[0083] The trigonometric function can effectively prevent the flood discharge from changing too dramatically when the downstream water level fluctuates. Through this function, the model can smoothly reduce the flood discharge when the downstream water level is too high, and gradually increase the flood discharge when the downstream water level is low, thereby maintaining the stability of the entire flood discharge process.

[0084] In order to reflect the complex nonlinear relationship, the nonlinear relationship between the upstream and downstream water levels and rainfall is constructed by combining logarithmic functions and trigonometric functions with rainfall. The cumulative impact value A(t) of the upstream and downstream water levels and rainfall on the flood discharge in the time interval [0, t] is calculated. The formula is:

[0085]

[0086] In the above equation, r(τ) represents the rainfall at time τ in the time interval [0, t], and h d (τ) represents the downstream water level at time point τ in the time interval [0, t], α1 represents the adjustment coefficient of the downstream water level on the flood discharge, β1 represents the nonlinear influence coefficient of rainfall on the flood discharge, h(τ) represents the upstream water level at time point τ in the time interval [0, t], τ represents the time-integrated variable, gτ represents the small change of the time variable τ, λ1 represents the attenuation coefficient of controlling the influence of rainfall on the flood discharge, and t represents the current time point;

[0087] The value of λ1 is set by rainfall data from experiments and historical experience. This parameter is obtained through regression analysis of a large number of rainfall records to find the law of rainfall intensity decay over time;

[0088] The value of α1 is optimized and adjusted according to the carrying capacity and hydrological characteristics of the downstream river channel through experimental measurements and flow control data, and is set through the empirical relationship between the downstream water level and flood discharge;

[0089] The value of β1 is determined by analyzing the data between historical rainfall and flood discharge. The impact function of rainfall on flood discharge is found by combining the regression model, and its nonlinearity is corrected.

[0090] In existing technologies, historical data are often added through fixed weight coefficients, which makes it difficult to fully reflect the different impacts of historical flood discharge events on current decisions at different time points. However, the accumulated experience of historical data is crucial for predicting and optimizing current flood discharge strategies.

[0091] The historical flood discharge records are introduced through the exponential decay function. The exponential decay function can gradually weaken the impact of earlier flood discharge events and maintain a balance between current decisions and historical records. The expression is: Among them, λ2 represents the attenuation coefficient of the control of historical flood discharge on the current decision, and μ represents the time-integrated variable;

[0092] The historical flood discharge record items are constructed through time integration, and the cumulative impact value B(t) of the historical flood discharge record on the flood discharge in the time interval [0, t] is calculated. The formula is:

[0093]

[0094] Among them, λ2 represents the attenuation coefficient of the historical flood discharge on the current decision, μ represents the time-integrated variable, dμ represents the small change of the time variable μ, and h d (μ) represents the downstream water level at the historical time point μ in the time interval [0, t], h(μ) represents the upstream water level at the historical time point μ in the time interval [0, t], H(μ) represents the historical flood discharge at the time point μ in the time interval [0, t], and t represents the current time point;

[0095] The value of λ2 is obtained by analyzing historical flood discharge data and establishing a flood discharge attenuation curve over time through statistical methods;

[0096] During flood discharge, water velocity is an important parameter that directly affects the water outflow rate and flood discharge efficiency. Existing systems often fail to accurately integrate it into flood discharge models, but rely on empirical values ​​for simple adjustments.

[0097] In order to adjust the flood discharge more accurately, the water flow velocity is combined with the upstream water level through a logarithmic function to reflect the change of flood discharge rate under different hydrological conditions. The expression is: v(τ)·log(1+h(τ)), where v(τ) represents the water flow velocity at time point τ in the time interval [0, t], and h(τ) represents the upstream water level at time point τ in the time interval [0, t].

[0098] Construct the water flow velocity influence term and calculate the current impact value C(t) of water flow velocity on flood discharge. The formula is:

[0099]

[0100] Where v(τ) represents the water velocity at time point τ in the time interval [0, t], h(τ) represents the upstream water level at time point τ in the time interval [0, t], and h d (τ) represents the downstream water level at time point τ in the time interval [0, t], τ represents the time-integrated variable, gτ represents the small change in the time variable τ, γ1 represents the regulating parameter of the downstream water level affecting the water flow rate, and t represents the current time point;

[0101] γ1 is used to control the limiting effect of the downstream water level on the flood discharge speed. When the downstream water level is high, this will increase the value of the denominator, thereby reducing the flood discharge and avoiding excessive impact on the downstream. The value of γ1 is determined by the experimental data of water flow velocity and downstream water level. The relationship between the water level change in the downstream river and the flood discharge is used to derive this parameter, which is corrected by empirical data and fluid mechanics models.

[0102] A complete flood discharge impact model is constructed to calculate the flood discharge Q(t) of the flood discharge warning system at time point t. The formula is:

[0103]

[0104] Among them, gτ represents the small change of the time variable τ, and t represents the current moment.

[0105] Traditional flood discharge models introduce historical data through simple weights. The formula uses time integral and exponential decay function, so that the impact of historical data naturally weakens over time, avoiding the rigidity of fixed weights and enhancing the flexibility of the model. Existing technologies usually use simple linear associations. The formula uses complex operations such as logarithms, exponential decay and trigonometric functions to perform nonlinear combinations of reservoir water levels, rainfall and downstream water levels, so that the flood discharge model can flexibly respond to different hydrological conditions and enhance the system's adaptability. The formula uses logarithmic function processing and downstream water level constraints to dynamically adjust the flood discharge rate to prevent excessive or insufficient flood discharge.

[0106] The flood discharge impact model significantly enhances the system's adaptive ability in the face of complex hydrological conditions and optimizes flood discharge decisions by introducing complex nonlinear operations. The rainfall impact part of the model simulates the gradual decline of rainfall through an exponential decay function, allowing the system to gradually reduce its sensitivity to historical rainfall, thereby avoiding the excessive impact of short-term rainfall on flood discharge. The introduction of logarithmic functions further smoothes the impact of rainfall on flood discharge, avoiding the situation where large fluctuations in rainfall lead to drastic changes in flood discharge, ensuring that the system will not be overly sensitive in the face of extreme rainfall events. The periodic impact of downstream water levels on flood discharge is introduced through trigonometric functions, effectively avoiding the excessive impact of drastic fluctuations in downstream water levels on flood discharge. When the downstream water level is high, the model can smoothly reduce the flood discharge to prevent To prevent flood disasters downstream, when the downstream water level is low, the system can gradually increase the flood discharge to maintain the stability of the flood discharge operation. Another innovation of the model is that it introduces historical flood discharge records through an exponential decay function, so that the impact of historical events on the current flood discharge decision can be gradually weakened over time. This processing method avoids the rigid practice of introducing historical data through fixed weights in traditional flood discharge models, allowing the model to more flexibly weigh the impact of current hydrological conditions and historical data at different time points. The impact of water flow velocity on flood discharge is also more accurately adjusted through the combination of logarithmic functions and upstream water levels. The model dynamically adjusts the flood discharge under different water flow velocities and upstream water levels to avoid unnecessary excessive or insufficient flood discharge due to changes in reservoir water level and water flow velocity. In general, based on the existing technology, the flood discharge impact model solves the deficiencies in the traditional model in processing rainfall, downstream water level and historical data through nonlinear operations, time decay of historical data, and dynamic adjustment of upstream and downstream water levels to flood discharge, so that the flood discharge warning system can make flood discharge decisions more accurately and efficiently, thereby effectively reducing the risk of flood discharge and protecting the safety of downstream areas.

[0107] Step 3: Determine the warning strategy at the current moment according to the flood discharge volume at the current moment.

[0108] In the embodiment of the present disclosure, step 3 specifically includes:

[0109] Obtaining preset flood discharge threshold intervals, switch signals of each flood discharge threshold interval, priorities of each switch signal, and early warning strategies corresponding to the switch signals of each flood discharge threshold interval;

[0110] The warning strategy corresponding to the flood discharge volume at the current moment is determined based on the preset flood discharge volume threshold intervals, the switch quantity signals of each flood discharge volume threshold interval, the priority of each switch quantity signal, and the warning strategy corresponding to the switch quantity signals of each flood discharge volume threshold interval.

[0111] It should be noted that different threshold intervals are defined according to the flood discharge volume and the threshold intervals are divided into different digital signals. Setting different warning strategies according to different digital signals means setting different flood discharge volume thresholds according to the flood discharge volume, defining different threshold intervals, dividing the threshold intervals into 8 different digital signals, adding and modifying warning strategies in the flood discharge warning platform, and specifying the warning strategies executed by each digital signal (only one strategy can be specified for one signal). Different digital signals correspond to different warning strategies to achieve the purpose of issuing warnings at different levels, including,

[0112] If Q(t)≥Q1, then digital signal 1 is triggered, and the flood discharge warning system sends a signal of a significant increase in the load curve to the warning station;

[0113] If Q(t)≥Q2, then digital signal 2 is triggered, and the on-duty operator manually starts the warning;

[0114] If Q(t)≥Q3, then digital signal 3 is triggered, and the on-duty operator manually starts the warning broadcast;

[0115] If Q(t)≥Q4, then digital signal 4 is triggered, and the on-duty operator manually starts the flood discharge warning system;

[0116] If Q(t)<Q1, then digital signal 5 is triggered, and the on-duty operator stops the flood discharge warning;

[0117] Digital signals 6, 7, and 8 are reserved;

[0118] In the flood discharge warning platform, the priorities of digital signals are defined. If the set priorities are the same, the priorities are confirmed according to the order of digital signals.

[0119] By setting different threshold intervals for the flood discharge volume and dividing them into 8 digital signals, combined with the warning strategies in the flood discharge warning platform, the system can automatically trigger different levels of warning measures according to the size of the flood discharge volume, ensuring the flexibility and response speed of the warning. When the flood discharge volume reaches a certain threshold, the system can automatically send a warning signal or require the on-duty operator to manually start the warning measures. Setting the priorities and minimum duration of digital signals helps to ensure the effective execution of different signals, avoiding signal conflicts or misoperations. This multi-level warning strategy realizes the intelligent management of the flood discharge process, improving the safety, accuracy, and response efficiency of the system.

[0120] Step 4: Issue a warning based on the warning strategy at the current moment.

[0121] In the embodiments of the present disclosure, the method further includes:

[0122] Regularly detect digital signals and execute the corresponding warning strategies.

[0123] It should be noted that the switch quantity signal is detected regularly and the corresponding early warning strategy is executed. If a switch quantity signal is detected, the switch quantity signal with the highest priority is selected first (when there are multiple signals at the same time, only the signal with the highest priority is processed). If no switch quantity signal is detected, the switch quantity signal continues to be detected;

[0124] The duration of the switch signal with the highest priority is judged, and the duration threshold of the switch signal is set. If the duration of the switch signal is less than the duration threshold, it is judged as an invalid signal and no operation is performed. Otherwise, the switch signal is judged as valid;

[0125] The flood discharge warning system detects the execution of the warning strategy of the effective switch signal. If the warning strategy corresponding to the switch signal has been executed, the signal is skipped and the system returns to the step of regularly detecting the switch to avoid repeated operations. If the warning strategy corresponding to the switch signal has not been executed, the warning strategy corresponding to the switch signal continues to be executed.

[0126] This solution ensures the real-time capture of the highest priority signal by periodically detecting the switch signal. At the same time, by setting the signal duration threshold, it can effectively screen out invalid signals and reduce false triggering operations. The system also avoids repeated execution of processed warning strategies, further improving response efficiency and system stability, ensuring the efficient execution of flood discharge warning strategies, and enhancing overall intelligence and reliability.

[0127] In an embodiment of the present disclosure, the method further includes:

[0128] Collect signal detection and execution status, device status information, device response performance and abnormal conditions, and generate a self-test report.

[0129] It should be noted that collecting all data and generating a self-test report means that after completing the detection and execution of each switch signal, the flood discharge warning system automatically collects and organizes all relevant data and generates a detailed self-test report based on the collected data. The report content includes signal detection and execution status, equipment status information, equipment response performance and abnormal conditions.

[0130] After completing the detection and execution of each switch signal, the flood discharge warning system can automatically collect and organize all relevant data and generate a detailed self-test report. The report content covers signal detection and execution, equipment status information, equipment response performance and abnormal situation analysis. The beneficial effect of this function is that it improves the automation level of the system, can monitor the operating status and performance of the equipment in real time, promptly discover potential problems and provide maintenance basis, thereby enhancing the reliability and safety of the system and effectively reducing human operation errors and maintenance delays.

[0131] It should be noted that the detailed process of the early warning method provided in this embodiment can be as follows: Figure 2 shown.

[0132] This embodiment can accurately calculate the flood discharge volume by constructing a flood discharge impact model, and automatically generate corresponding switch signals according to different flood discharge ranges, and set corresponding early warning strategies for each signal, thereby ensuring the intelligence and precision of flood discharge early warning. Through the mechanism of timed signal detection, signal duration judgment and prevention of repeated execution of signals, the system further improves reliability and reduces the possibility of false triggering.

[0133] In summary, the flood discharge warning method proposed in this embodiment can accurately calculate the flood discharge volume, thereby improving the intelligence and precision of flood discharge warning.

[0134] Embodiment 2

[0135] Figure 3 FIG. 1 is a structural diagram of an early warning system for flood discharge provided according to an embodiment of the present application, such as Figure 2 As shown, the system comprises:

[0136] The acquisition module 100 is used to collect the reservoir data at the current moment by using the pre-deployed sensors, and pre-process the reservoir data to obtain the pre-processed reservoir data;

[0137] Wherein, the pre-deployed sensors include:

[0138] Radar water level sensors deployed in the catchment area upstream of the reservoir, the entrance of the flood discharge channel, and the river channel downstream of the reservoir;

[0139] Rainfall sensors placed above the reservoir’s catchment area;

[0140] Flow velocity sensors deployed in the river channel downstream of the reservoir;

[0141] The reservoir data include: upstream water level, downstream water level, rainfall and water flow rate.

[0142] A first determination module 200, for determining the flood discharge volume at the current moment according to the preprocessed reservoir data;

[0143] A second determination module 300 is used to determine the warning strategy at the current moment according to the flood discharge volume at the current moment;

[0144] The warning module 400 is used to issue a warning based on the warning strategy at the current moment.

[0145] In the embodiment of the present disclosure, the acquisition module 100 is also used for:

[0146] The reservoir data is filtered, abnormal data is kicked out, abnormal data is corrected and normalized in turn.

[0147] In the embodiment of the present disclosure, the first determining module 200 is further configured to:

[0148] Determine the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge according to the upstream water level, the downstream water level and the rainfall;

[0149] Determine the cumulative impact of historical flood discharge records on flood discharge volume based on the upstream and downstream water levels at each moment in the historical period;

[0150] Determine the current impact value of the water flow velocity on the flood discharge according to the upstream water level, the downstream water level and the water flow velocity;

[0151] The flood discharge volume at the current moment is determined according to the cumulative impact value of the upstream and downstream water levels and rainfall on the flood discharge volume, the cumulative impact value of the historical flood discharge records on the flood discharge volume, and the current impact value of the water flow velocity on the flood discharge volume.

[0152] The calculation formula of the flood discharge volume at the current moment is as follows:

[0153]

[0154] Where Q(t) is the flood discharge corresponding to the current time t, A(t) is the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge corresponding to the current time t, B(t) is the cumulative impact of the historical flood discharge records on the flood discharge corresponding to the current time t, C(t) is the current impact of the water flow velocity on the flood discharge corresponding to the current time t, and gτ is the small change in the time variable t.

[0155] In the embodiment of the present disclosure, the second determining module 300 is further configured to:

[0156] Obtaining preset flood discharge threshold intervals, switch signals of each flood discharge threshold interval, priorities of each switch signal, and early warning strategies corresponding to the switch signals of each flood discharge threshold interval;

[0157] The warning strategy corresponding to the flood discharge volume at the current moment is determined based on the preset flood discharge volume threshold intervals, the switch quantity signals of each flood discharge volume threshold interval, the priority of each switch quantity signal, and the warning strategy corresponding to the switch quantity signals of each flood discharge volume threshold interval.

[0158] In the embodiments of the present disclosure, Figure 4 As shown, the system also includes:

[0159] The detection module 500 is used to periodically detect the switch signal and execute the corresponding early warning strategy.

[0160] In the embodiments of the present disclosure, Figure 4 As shown, the system also includes:

[0161] The generation module 600 is used to collect signal detection and execution status, device status information, device response performance and abnormal conditions, and generate a self-test report.

[0162] In summary, the early warning system for flood discharge proposed in this embodiment can accurately calculate the flood discharge volume, thereby improving the intelligence and precision of flood discharge early warning.

[0163] Embodiment 3

[0164] In order to implement the above embodiments, the present disclosure further proposes a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the first embodiment is implemented.

[0165] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0166] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0167] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A flood warning method, characterized in that: The method comprises: Using pre-deployed sensors to collect reservoir data at the current moment, and pre-processing the reservoir data to obtain pre-processed reservoir data; Determining the flood discharge volume at the current moment according to the preprocessed reservoir data; Determining an early warning strategy at the current moment according to the flood discharge volume at the current moment; An early warning is issued based on the early warning strategy at the current moment.

2. The method according to claim 1, characterized in that The pre-deployed sensors include: Radar water level sensors deployed in the catchment area upstream of the reservoir, the entrance of the flood discharge channel, and the river channel downstream of the reservoir; Rainfall sensors placed above the reservoir’s catchment area; Flow velocity sensors deployed in the river channel downstream of the reservoir; The reservoir data include: upstream water level, downstream water level, rainfall and water flow rate.

3. The method according to claim 2, characterized in that The preprocessing of the reservoir data to obtain preprocessed reservoir data includes: The reservoir data is filtered, abnormal data is kicked out, abnormal data is corrected and normalized in turn.

4. The method according to claim 3, characterized in that Determining the flood discharge volume at the current moment according to the preprocessed reservoir data includes: Determine the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge according to the upstream water level, the downstream water level and the rainfall; Determine the cumulative impact of historical flood discharge records on flood discharge volume based on the upstream and downstream water levels at each moment in the historical period; Determine the current impact value of the water flow velocity on the flood discharge according to the upstream water level, the downstream water level and the water flow velocity; The flood discharge volume at the current moment is determined according to the cumulative impact value of the upstream and downstream water levels and rainfall on the flood discharge volume, the cumulative impact value of the historical flood discharge records on the flood discharge volume, and the current impact value of the water flow velocity on the flood discharge volume.

5. The method according to claim 4, characterized in that The calculation formula of the flood discharge at the current moment is as follows: Where Q(t) is the flood discharge corresponding to the current time t, A(t) is the cumulative impact of the upstream and downstream water levels and rainfall on the flood discharge corresponding to the current time t, B(t) is the cumulative impact of the historical flood discharge records on the flood discharge corresponding to the current time t, C(t) is the current impact of the water flow velocity on the flood discharge corresponding to the current time t, and gτ is the small change in the time variable t.

6. The method according to claim 5, characterized in that Determining the early warning strategy at the current moment according to the flood discharge volume at the current moment includes: Obtaining preset flood discharge threshold intervals, switch signals of each flood discharge threshold interval, priorities of each switch signal, and early warning strategies corresponding to the switch signals of each flood discharge threshold interval; The warning strategy corresponding to the flood discharge volume at the current moment is determined based on the preset flood discharge volume threshold intervals, the switch quantity signals of each flood discharge volume threshold interval, the priority of each switch quantity signal, and the warning strategy corresponding to the switch quantity signals of each flood discharge volume threshold interval.

7. The method according to claim 6, characterized in that The method further comprises: Regularly detect switch signals and execute corresponding early warning strategies.

8. The method according to claim 7, characterized in that The method further comprises: Collect signal detection and execution status, device status information, device response performance and abnormal conditions, and generate a self-test report.

9. An early warning system for flood discharge, characterized in that: The system comprises: A collection module, used to collect reservoir data at the current moment using pre-deployed sensors, and pre-process the reservoir data to obtain pre-processed reservoir data; A first determination module, used to determine the flood discharge volume at the current moment according to the preprocessed reservoir data; A second determination module is used to determine the warning strategy at the current moment according to the flood discharge volume at the current moment; The early warning module is used to issue an early warning based on the early warning strategy at the current moment.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

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