A high-precision buoy-type water level measurement method

Abstract

The present invention discloses a high-precision buoy-type water level measurement method, which includes obtaining a sampling interval and number of sampling times for water level measurement; sampling according to the sampling interval and number of sampling times to obtain data for each sampling; calculating the data for each sampling based on a water level filtering algorithm to obtain a water level measurement value; wherein the sampling data includes elevation data, immersion depth, and inclination angle collected by a preset positioning terminal, an electronic water gauge, and an inclination sensor; the present invention combines the positioning elevation, immersion depth, degree of inclination, and a water level filtering algorithm to calculate the water level measurement value, and sends it to a central station using a communication terminal, thereby realizing high-precision automatic water level measurement; and solving the problem that it is difficult to accurately measure the water level using a buoy platform in practical applications.

Description

Technical Field

[0001] The invention relates to a high-precision buoy type water level measurement method, belonging to the technical field of water resource monitoring. Background Art

[0002] Hydrological and water resources monitoring primarily involves real-time monitoring of hydrological parameters such as rivers, lakes, reservoirs, channels, and groundwater. Monitoring content includes water level, flow, flow velocity, rainfall (snow), evaporation, sediment, ice, soil moisture, and water quality. The use of automated technology to achieve online water level measurement is the primary means of hydrological data collection and real-time monitoring of water conditions, providing important support for hydropower unit operation, hydrological data compilation, flood and drought prevention and control, water resources scheduling and management, and water ecological protection.

[0003] Existing online water level measurement usually requires the construction of a hydrological station and a water level logging well at a fixed location, the deployment of data acquisition and transmission equipment within the hydrological station, and the installation of a water level sensor in the water level logging well. With the surge in demand for water level monitoring, the conventional construction model of a hydrological station with a supporting water level logging well faces the challenges of high construction costs and difficult site selection. Sections requiring water level measurement are not feasible due to the large fluctuations in water levels, making civil construction difficult, sensor selection difficult, and construction costs too expensive. In situations where a large number of hydrological emergency monitoring is required, the model of temporarily constructing and then dismantling a water level logging well will also result in unnecessary waste. Using a buoy platform for online water level monitoring can effectively solve the above problems. It not only greatly reduces construction costs, but also allows for rapid deployment and reuse, and has broad application prospects.

[0004] Existing buoy measurement platforms typically use pressure-type water level gauges that sink to the bottom of the water. These are affected by human factors like gate opening and closing, ship traffic, and environmental factors like heavy rain, strong winds, high waves, siltation, and water pollution. This makes it difficult to accurately obtain water level baseline values and real-time water level changes, resulting in uncontrolled data quality. Furthermore, measurement equipment is susceptible to environmental influences, often leading to sensor obstruction, entanglement in water, or even scraping, making safe and stable operation difficult. These issues have severely hampered the widespread application of buoy-based water level measurement technology. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a high-precision buoy water level measurement method to solve the technical problems that the existing buoy measurement platform is easily affected by external factors, resulting in unstable measurement operation and uncontrolled measurement data quality.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0007] The present invention provides a high-precision buoy-type water level measurement method, comprising:

[0008] Get the sampling interval and sampling times of water level measurement;

[0009] Sampling is performed according to the sampling interval and sampling times to obtain each sampling data;

[0010] Calculate each sampling data based on the water level filtering algorithm to obtain the water level measurement value;

[0011] The sampling data includes elevation data, water depth, and tilt angle collected by a preset positioning terminal, electronic water gauge, and inclination sensor.

[0012] Optionally, the step of calculating each sampling data based on a water level filtering algorithm to obtain a water level measurement value includes:

[0013] Calculate the water surface elevation H based on the elevation data and the immersion depth SMi :

[0014] H SMi =H BDi -H GD +H FBi

[0015] Where H BDi 、H FBi are the elevation data and water depth of the i-th sampling data, respectively, H GD The preset installation height difference between the positioning terminal and the electronic water gauge;

[0016] Calculate the water level measurement value H based on the inclination angle and water surface elevation ME :

[0017]

[0018] Where N C is the number of sampling times, D QXi is the tilt angle of the i-th sampling data.

[0019] Optionally, before calculating each sampling data based on the water level filtering algorithm to obtain the water level measurement value, the following steps are further included:

[0020] Calculate the mean square value S according to the tilt angle QX :

[0021]

[0022] Where N C is the number of sampling times, ΔD QXj is the tilt angle difference between the jth adjacent sampling times;

[0023] The mean square value S QX and the preset mean square threshold S QYFor comparison:

[0024] If S QX QY , then enter the step: calculate each sampling data based on the water level filtering algorithm to obtain the water level measurement value;

[0025] If S QX ≥S QY , then let the sampling times N C =nN C , n is the preset magnification, the sampling interval remains unchanged and returns to step: sampling is performed according to the sampling interval and sampling times to obtain each sampling data.

[0026] Optionally, the positioning terminal, electronic water gauge, and inclination sensor are all connected to a preset data processing unit, and the elevation data, immersion depth, and inclination angle are acquired, stored, and calculated by the data processing unit.

[0027] Optionally, the data processing unit is connected to a preset communication terminal, and remote information interaction is performed through the communication terminal.

[0028] Optionally, the remote information interaction is carried out in the form of short messages.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention provides a high-precision buoy-type water level measurement method, which combines positioning elevation, immersion depth, inclination degree and water level filtering algorithm to calculate the water level measurement value, and sends it to the central station using a communication terminal, thereby realizing high-precision automatic water level measurement; solving the problem of accurate water level measurement using a buoy platform in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a flow chart of a high-precision buoy-type water level measurement method provided by an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of a specific construction solution provided by an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the on-site installation method of the specific construction solution provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] like Figure 1 ​As shown, the present invention provides a high-precision buoy-type water level measurement method, comprising the following steps:

[0036] S101, obtaining the sampling interval and sampling times of water level measurement;

[0037] S102, sampling is performed according to the sampling interval and the number of sampling times to obtain each sampling data;

[0038] S103, calculating each sampling data based on the water level filtering algorithm to obtain a water level measurement value;

[0039] Among them, the sampling data includes elevation data, water depth, and tilt angle collected through a preset positioning terminal, electronic water gauge, and inclination sensor.

[0040] Specifically, before step S103, that is, before calculating each sampling data based on the water level filtering algorithm to obtain the water level measurement value, the following steps are also included:

[0041] S201, calculate the mean square value S according to the tilt angle QX :

[0042]

[0043] Where N C is the number of sampling times, ΔD QXj is the tilt angle difference between the jth adjacent sampling times;

[0044] S202, the mean square value S QX and the preset mean square threshold S QY For comparison:

[0045] If S QX QY , then proceed to step: calculate each sampling data based on the water level filtering algorithm to obtain the water level measurement value (i.e. proceed to step S103);

[0046] If S QX ≥S QY , then let the sampling times N C =nN C , n is the preset magnification, the sampling interval remains unchanged and returns to step: sampling is performed according to the sampling interval and the number of sampling times to obtain each sampling data (ie, returns to step S102 and samples again with the updated number of post-sampling times).

[0047] Specifically, in step S103, calculating each sampling data based on the water level filtering algorithm to obtain the water level measurement value includes:

[0048] S301. Calculate the water surface elevation H based on the elevation data and the immersion depth. SMi :

[0049] ​H SMi =H BDi -H GD +H FBi

[0050] Where H BDi 、H FBi are the elevation data and water depth of the i-th sampling data, respectively, H GD The preset installation height difference between the positioning terminal and the electronic water gauge;

[0051] S302: Calculate the water level measurement value H based on the inclination angle and the water surface elevation ME :

[0052]

[0053] Where N C is the number of sampling times, D QXi is the tilt angle of the i-th sampling data.

[0054] Specifically, the positioning terminal, electronic water gauge, and inclination sensor are all connected to a preset data processing unit, which acquires, stores, and calculates elevation data, water depth, and inclination angle through the data processing unit; the data processing unit is connected to a preset communication terminal, and remote information exchange is performed through the communication terminal; remote information exchange is performed using short messages. In this embodiment, the sampling interval, number of sampling times, mean square value threshold, and preset magnification can be pre-burned in the data processing unit and directly read and used when needed, or the modified data can be sent to the data processing unit through the communication terminal at any time through the central station, and directly read and used when needed. The measured water level measurement value H ME and mean square value S QX All data are sent to the central station through the communication terminal to achieve remote monitoring.

[0055] like Figure 2 As shown, this embodiment provides a specific construction scheme of a positioning terminal, an electronic water gauge, an inclination sensor, a data processing unit, and a communication terminal that can implement the above method; in order to reduce the problem that the measurement results are easily affected by external factors, a buoy platform with a sealed cavity is set up, and the data processing unit, the communication terminal, the positioning terminal, the inclination sensor, the electronic water gauge and the supporting power supply are all arranged inside the sealed cavity, and the detection end of the electronic water gauge passes through the bottom of the sealed cavity and extends to the outside of the sealed cavity; the output ends of the positioning terminal, the inclination sensor, and the electronic water gauge are all connected to the data processing unit, and the power supply ends of the positioning terminal, the inclination sensor, the electronic water gauge and the data processing module are all connected to the supporting power supply, and the communication terminal is communicatively connected to the data processing unit. An anchor chain is connected to the bottom of the sealed cavity, and the other end of the anchor chain is connected to an anchor. In order to ensure the quality of communication, an antenna is provided at the top of the sealed cavity, and the antenna is communicatively connected to the communication terminal.

[0056] In this embodiment, the communication terminal and the positioning terminal are both terminal devices of the Beidou navigation system. The positioning accuracy of the positioning terminal can reach the centimeter level, and the communication terminal can use the Beidou short message method to reduce communication costs.

[0057] like Figure 3 , which is a schematic diagram of the on-site installation method of the specific construction solution provided in this embodiment.

[0058] The present invention provides a high-precision buoy-type water level measurement method. This method combines positioning elevation, immersion depth, inclination, and a water level filtering algorithm to calculate a water level measurement value. This value is then transmitted to a central station via a communication terminal, achieving high-precision automatic water level measurement. This method addresses the practical difficulty of accurately measuring water levels using buoy platforms and can be widely applied to hydropower unit operation, hydrological data compilation, flood and drought prevention and control, water resource scheduling and management, and aquatic ecological protection. The present invention has the following features:

[0059] 1) Using a buoy platform for water level measurement, the system construction cost is low and the site selection is convenient and flexible;

[0060] 2) The combination of Beidou satellite navigation system terminal equipment and electronic water gauges enables rapid measurement of water level elevation and water level amplitude, solving the problems of water level sensors being easily clogged, entangled by water, or scraped off when they sink to the bottom of the water.

[0061] 3) A water level filtering algorithm combined with tilt frequency was proposed to solve the problem of inaccurate measurement data caused by the buoy platform fluctuating with the water surface;

[0062] 4) Use the short message communication method of the Beidou satellite navigation system to remotely adjust relevant parameters to ensure that the water level measurement method is quickly and effectively matched with the on-site environment;

[0063] 5) Water level measurement is entirely electronic, and the sealed cavity protection solves the problem of sensing equipment being easily damaged under adverse conditions such as heavy rain, strong winds, big waves, and water pollution.

[0064] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0065] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-precision buoy water level measurement method, characterized in that: include: Get the sampling interval and sampling times of water level measurement; Sampling is performed according to the sampling interval and sampling times to obtain each sampling data; Calculate each sampling data based on the water level filtering algorithm to obtain the water level measurement value; The sampling data includes elevation data, water depth, and tilt angle collected by a preset positioning terminal, electronic water gauge, and inclination sensor; The method of calculating each sampling data based on the water level filtering algorithm to obtain the water level measurement value includes: Calculate water surface elevation based on elevation data and flooding depth : ; Where, Respectively Elevation data and flooding depth of sub-sampled data, The preset installation height difference between the positioning terminal and the electronic water gauge; Calculate water level measurements based on tilt angle and water surface elevation : ; Where, is the number of sampling times, For the Tilt angle of subsampled data; Before calculating each sampling data based on the water level filtering algorithm to obtain the water level measurement value, the following steps are also included: Calculate the mean square value based on the tilt angle : ; Where, is the number of sampling times, For the The difference in tilt angle between adjacent sampling times; The mean square value and the preset mean square threshold For comparison: like , then enter the step: calculate each sampling data based on the water level filtering algorithm to obtain the water level measurement value; like , then let the sampling times , The magnification is preset, the sampling interval remains unchanged and returns to step: sampling is performed according to the sampling interval and sampling times to obtain each sampling data.

2. A high-precision buoy-type water level measurement method according to claim 1, characterized in that: The positioning terminal, electronic water gauge, and inclination sensor are all connected to a preset data processing unit, and the elevation data, water depth, and inclination angle are acquired, stored, and calculated by the data processing unit.

3. A high-precision buoy-type water level measurement method according to claim 2, characterized in that: The data processing unit is connected to a preset communication terminal, and remote information interaction is performed through the communication terminal.

4. A high-precision buoy-type water level measurement method according to claim 3, characterized in that: The remote information interaction is carried out in the form of short messages.

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