A hydrological and meteorological data transmission control system based on BeiDou communication

Abstract

The present application relates to the field of Beidou data transmission technology, and relates to a hydrological and meteorological data transmission control system based on Beidou communication. The system comprises a river management unit, a hydrological and meteorological monitoring point management unit, a river region management unit, a region adjustment control unit and a Beidou communication transmission unit. The river management unit is used to obtain geographical data of a river, and extract position data of a hydrological and meteorological monitoring point in the geographical data. The hydrological and meteorological monitoring point management unit is used to obtain hydrological and meteorological data of each hydrological and meteorological monitoring point, and obtain transmission data volume of Beidou communication and the hydrological and meteorological monitoring point. The system can accurately divide abnormal, influence and normal regions, and assign positions according to priority when encountering region overlap, so as to ensure clear and accurate region division. Abnormal region fluctuation influence analysis can determine the influence on other monitoring points, and timely find potential problems. In a flood warning scene, the system can quickly determine the affected region, and take preventive measures in advance.

Description

Technical Field

[0001] This invention relates to the field of BeiDou data transmission technology, and more specifically, to a hydrological and meteorological data transmission control system based on BeiDou communication. Background Technology

[0002] In the field of hydrological and meteorological monitoring, accurate acquisition and analysis of data are crucial for ensuring water resource management and meteorological disaster early warning. The collection, transmission and analysis of hydrological and meteorological data aim to provide relevant departments with timely and accurate information so as to make scientific decisions, reduce losses caused by natural disasters, and improve the efficiency of rational use of water resources.

[0003] Currently, most existing technologies improve communication by adding base stations and optimizing communication protocols. However, building base stations in remote areas is costly and difficult, and optimizing communication protocols has limited effectiveness in solving signal blockage problems in complex terrain and special environments. As a result, when flood warnings occur, the limited speed of satellite communication and the need for rapid transmission to provide effective hydrological and meteorological information to ground stations lead to the inability of BeiDou terminals to receive hydrological information sent by multiple hydrological monitoring stations at the same time. Consequently, ground station staff cannot fully assess the development trend and impact range of floods when analyzing hydrological information, resulting in poor warning effectiveness. To mitigate this situation, a hydrological and meteorological data transmission and control system based on BeiDou communication is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrological and meteorological data transmission and control system based on BeiDou communication to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a hydrological and meteorological data transmission control system based on BeiDou communication is provided, including a river management unit, a hydrological and meteorological monitoring point management unit, a river area management unit, an area adjustment and control unit, and a BeiDou communication transmission unit.

[0006] The river management unit is used to acquire geographical data of the river and extract the location data of hydrological and meteorological monitoring points from the geographical data.

[0007] The hydrological and meteorological monitoring point management unit is used to acquire hydrological and meteorological data of each hydrological and meteorological monitoring point, acquire the amount of data transmitted between Beidou communication and the hydrological and meteorological monitoring point, and set the fluctuation threshold for each hydrological and meteorological monitoring point by combining historical hydrological and meteorological data with location data.

[0008] The river area management unit is used to compare the fluctuation values ​​of hydrological and meteorological data with fluctuation thresholds for anomaly comparison, classify hydrological and meteorological monitoring points that exceed the fluctuation thresholds into an abnormal area, and then analyze the affected areas and normal areas of other hydrological and meteorological monitoring points based on the abnormal areas, fluctuation values, and river direction.

[0009] The area adjustment control unit is used to allocate the transmission data volume by combining the abnormal area, the affected area and the normal area, and at the same time calculates and compares the required transmission volume and the transmission data volume of all areas, and merges the relevant areas according to the comparison results.

[0010] The Beidou communication transmission unit is used to control and transmit the hydrological and meteorological data of the merged area with Beidou communication.

[0011] As a further improvement to this technical solution, the river management unit establishes a data connection with the ground control center and obtains information about the rivers under its jurisdiction through the ground control center. The river information includes the geographical data of each river and the hydrological and meteorological monitoring points matched for each river. At the same time, the location data of the hydrological and meteorological monitoring points are obtained from the geographical data.

[0012] As a further improvement to this technical solution, the hydrological and meteorological monitoring point management unit includes a hydrological and meteorological data acquisition module, a Beidou data acquisition module, and a threshold setting module;

[0013] The hydrological and meteorological data acquisition module is used to acquire hydrological and meteorological data through sensors at each hydrological and meteorological monitoring point, and to analyze the detection range of each hydrological and meteorological monitoring point in conjunction with the geographical data of the river to obtain the detection range of each hydrological and meteorological monitoring point in the corresponding river.

[0014] The acquired hydrological and meteorological data includes real-time hydrological and meteorological data and historical hydrological and meteorological data;

[0015] The Beidou data acquisition module is used to acquire Beidou communication satellites connected to the river, and then calculate the amount of data transmitted by the acquired Beidou communication satellites to obtain the maximum amount of data that the hydrological and meteorological monitoring points in the river area can transmit in real time.

[0016] The threshold setting module is used to combine the historical hydrological and meteorological data of each hydrological and meteorological monitoring point with the location data in the river to set the fluctuation threshold, thereby setting a corresponding fluctuation threshold for each hydrological and meteorological monitoring point.

[0017] As a further improvement to this technical solution, the steps for setting the fluctuation threshold by the threshold setting module are as follows:

[0018] T upper =Max×(1+α)

[0019] T lower =Min×(1-α)

[0020] Among them, T upper T is the upper limit threshold. lower α is the lower limit threshold, Max is the maximum value in the historical data, Min is the minimum value in the historical data, and α is the adjustment coefficient, where 0 < α < 1.

[0021] As a further improvement to this technical solution, the river area management unit includes an anomaly comparison module and an area division module;

[0022] The anomaly comparison module is used to analyze the fluctuation value by combining the real-time hydrological and meteorological data of each hydrological and meteorological monitoring point with historical hydrological and meteorological data, and then compare the fluctuation value with the fluctuation threshold. If the fluctuation value exceeds the fluctuation threshold, the hydrological and meteorological monitoring point is determined to be abnormal. Otherwise, if the fluctuation value does not exceed the fluctuation threshold, monitoring continues.

[0023] The region division module is used to divide the hydrological and meteorological monitoring points that the anomaly comparison module determines to be abnormal into an abnormal region according to the detection range. Then, based on the abnormal region, the fluctuation value and the river direction, the impact analysis is performed on other hydrological and meteorological monitoring points. The hydrological and meteorological monitoring points that are affected by the abnormal region are divided into an affected region according to the detection range. Then, the hydrological monitoring points that do not belong to the abnormal region or the affected region are regarded as normal regions.

[0024] As a further improvement to this technical solution, the steps for the impact analysis performed by the region division module are as follows:

[0025] Let the monitoring point P(x1, y1) and a point Q(x2, y2) within the abnormal region be represented by the vector:

[0026]

[0027] Calculate vectors The dot product with the river direction vector is:

[0028]

[0029] when Then monitoring point P is downstream of point Q within the abnormal region;

[0030] when Then it is not in the downstream direction;

[0031] ΔR eff =k R ×ΔR

[0032] Where, ΔR effThe value represents the impact on the affected monitoring points, ΔR represents the fluctuation value of the abnormal area, L represents the distance between the downstream monitoring point and the abnormal area, and k represents the impact value. R Let R be the attenuation coefficient of the rainfall effect. cur +ΔR eff >R upper If so, it is believed that the abnormal area will affect the downstream monitoring point.

[0033] As a further improvement to this technical solution, when setting regions, the region division module prioritizes abnormal regions over affected regions, and affected regions over normal regions. When regions overlap during division, the regions are allocated according to their priorities.

[0034] As a further improvement to this technical solution, the area adjustment control unit includes a control allocation module and a data comparison module;

[0035] The control and allocation module is used to perform a proportion analysis of abnormal areas, affected areas, and normal areas in conjunction with the river's geographical data, and to control the amount of data allocated based on the proportion analysis results.

[0036] The data comparison module is used to combine the hydrological and meteorological monitoring points corresponding to each type of region to obtain the required transmission volume for each type of region. Then, the required transmission volume is compared with the allocated data volume. When the required transmission volume is greater than the allocated data volume, the relevant regions are merged until the required data volume is less than the allocated data volume.

[0037] As a further improvement to this technical solution, when the area adjustment control unit performs data transmission volume control and allocation, each area corresponds to a representative data, and then the transmission is allocated to multiple areas according to priority.

[0038] Meanwhile, when merging related regions, the merging condition is that the regions are of the same type. Multiple regions of the same type are merged, and the hydrological and meteorological data of one hydrological and meteorological monitoring point in the merged region is selected as the representative data of that region.

[0039] Regional mergers should prioritize merging normal regions, followed by affected regions and then abnormal regions.

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] 1. This hydrological and meteorological data transmission and control system based on BeiDou communication can accurately divide abnormal, affected, and normal areas. When areas overlap, positions are allocated according to priority, ensuring clear and accurate area division. Analysis of the impact of fluctuations in abnormal areas can determine the influence on other monitoring points, promptly identify potential problems, and in flood warning scenarios, quickly determine affected areas and take preventative measures in advance.

[0042] 2. In this hydrological and meteorological data transmission control system based on Beidou communication, the detection range of monitoring points is determined by combining river geographic data, making the data more targeted and accurate. Historical data is grouped and statistically analyzed, and fluctuation thresholds are adjusted considering location factors. This can accurately judge the anomalies in monitoring point data and provide a reliable basis for subsequent decision-making. Different fluctuation thresholds are set for monitoring points at different locations according to the differences between upstream and downstream of the river, which is more in line with the actual situation.

[0043] 3. In this hydrological and meteorological data transmission control system based on Beidou communication, the amount of data to be transmitted is allocated according to the proportion of abnormal, affected and normal areas, so that data transmission resources are used rationally. Each area corresponds to representative data and is transmitted according to priority, ensuring that data from important areas are processed first. When merging areas, normal areas are merged first, optimizing resource allocation and ensuring the transmission of critical data when the amount of data is limited. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the present invention. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please see Figure 1 As shown, the purpose of this embodiment is to provide a hydrological and meteorological data transmission control system based on BeiDou communication, including a river management unit, a hydrological and meteorological monitoring point management unit, a river area management unit, an area adjustment and control unit, and a BeiDou communication transmission unit.

[0047] The river management unit is used to acquire geographic data of rivers and extract location data of hydrological and meteorological monitoring points from the geographic data.

[0048] The river management unit establishes a data connection with the ground control center to obtain information about the rivers under its jurisdiction. This information includes geographic data for each river and the corresponding hydrological and meteorological monitoring points. Simultaneously, the location data of these monitoring points is obtained from the geographic data. The specific steps are as follows:

[0049] Establish connection: Activate the data connection function between the river management unit and the ground control center, and establish a stable communication link with the server of the ground control center through specific communication protocols (such as TCP / IP protocol, dedicated data transmission protocol, etc.);

[0050] Sending a request: After successfully establishing a connection, send a request command to the ground control center to obtain river information. The request command may include some necessary parameters, such as the scope identifier of the jurisdiction area, data type requirements, etc., so that the ground control center can accurately filter and provide the required river information.

[0051] Data Acquisition: Upon receiving a request, the ground control center queries and retrieves information about the rivers under its jurisdiction from its database. This information includes geographical data for each river (such as the river's latitude and longitude range, length, river channel shape, and other relevant geographical coordinates and descriptive data) as well as relevant information about the hydrological and meteorological monitoring points matched for each river (such as the monitoring point's number and type). This data is then packaged and sent back to the river management unit via the established data link.

[0052] Data analysis: After receiving river information data returned from the ground control center, the data is analyzed, and the geographical data and relevant information of hydrological and meteorological monitoring points for each river are extracted according to the characteristics of the data format.

[0053] Location data extraction: From the parsed geographic data, further filter and extract the location data (such as the latitude and longitude coordinates of the monitoring point) of each hydrological and meteorological monitoring point.

[0054] The hydrological and meteorological monitoring point management unit is used to acquire hydrological and meteorological data of each hydrological and meteorological monitoring point, and to acquire the amount of data transmitted between Beidou communication and the hydrological and meteorological monitoring point. It also combines historical hydrological and meteorological data with location data to set fluctuation thresholds for each hydrological and meteorological monitoring point.

[0055] The hydrological and meteorological monitoring point management unit includes a hydrological and meteorological data acquisition module, a BeiDou data acquisition module, and a threshold setting module;

[0056] The hydrological and meteorological data acquisition module is used to acquire hydrological and meteorological data through sensors at each hydrological and meteorological monitoring point, and to analyze the detection range of each hydrological and meteorological monitoring point in conjunction with the geographical data of the river, so as to obtain the detection range of each hydrological and meteorological monitoring point in the corresponding river.

[0057] The acquired hydrological and meteorological data includes real-time and historical hydrological and meteorological data. The specific steps are as follows:

[0058] Sensor data acquisition: Install corresponding sensors at each hydrological and meteorological monitoring point, such as water level sensors, rainfall sensors, wind speed sensors, temperature sensors, etc. The sensors convert the collected physical signals (such as water level height, rainfall amount, etc.) into electrical signals or digital signals, and send them to the data acquisition terminal equipment through data transmission lines (such as wired cables, wireless transmission modules, etc.).

[0059] Data storage and classification: After receiving data from various sensors, the data acquisition terminal equipment stores the data. During storage, the data is classified into real-time hydrological and meteorological data and historical hydrological and meteorological data according to the data acquisition time and sensor type.

[0060] Real-time data generally refers to the data that has been recently collected and transmitted.

[0061] Historical data refers to data collected and stored over a past period of time;

[0062] Acquire river geographic data: Acquire geographic data of the monitored rivers, such as the river's latitude and longitude coordinates, river course, and river width. This geographic data can be obtained previously through establishing a connection with the ground control center.

[0063] Detection Range Analysis: For each hydrological and meteorological monitoring point, its location information (latitude and longitude coordinates, etc.) is combined with the river's geographical data to analyze its relative position within the river, such as whether it is located upstream, midstream, or downstream, and its distance from the riverbank. Then, based on the monitoring point's location and the river's geographical characteristics (such as changes in river width, river curvature, etc.), the detection range of the monitoring point within the corresponding river is determined. For example, for a monitoring point located in a relatively straight river with little width variation, its detection range might be an area centered on the monitoring point, extending a certain distance upstream and downstream (e.g., 1 kilometer) and a certain width on both sides of the river channel (e.g., 50 meters). For a monitoring point located at a river bend, the detection range may need to be adjusted according to the degree of curvature. The coordinates of the point L upstream from the monitoring point are calculated using the following formula:

[0064]

[0065] The coordinates of a point located downstream of monitoring point L are given by the following formula:

[0066]

[0067] The coordinates of the monitoring point are P(x0, y0), and the direction vector of the river flow is known to be... L is the distance set for the upstream and downstream sides. Let be the magnitude of the direction vector.

[0068] The BeiDou data acquisition module is used to acquire BeiDou communication satellites connected to the river. Then, it combines the acquired BeiDou communication satellite data transmission volume with calculations to determine the maximum real-time data transmission volume that hydrological and meteorological monitoring points in the river area can transmit. The specific steps are as follows:

[0069] Determine the satellite connection range: Based on the geographical location of the river (latitude and longitude range, etc.), combined with the coverage and orbital parameters of the BeiDou satellite system, determine the approximate range of BeiDou communication satellites that may be connected to the river area. This can be done by consulting publicly available information about the BeiDou satellite system to obtain satellite orbital information (such as orbital altitude, orbital inclination, etc.) and relevant data on the coverage area.

[0070] Establish satellite connection and obtain parameters: Using the data acquisition terminal equipment installed at the hydrological and meteorological monitoring point in the river area (equipped with a Beidou communication module), attempt to establish a connection with the Beidou communication satellites within the above-defined range. After the connection is successfully established, obtain the relevant transmission parameters of each satellite through the communication protocol, such as the satellite's communication bandwidth, data transmission rate (the amount of data that can be transmitted per unit time, such as how many bits of data are transmitted per second), maximum transmission packet length, and other information.

[0071] Analyze satellite combination: Considering that multiple Beidou communication satellites may establish connections with monitoring points in the river area at the same time, analyze the combination of these satellites. The transmission parameters of different satellites may be different. It is necessary to comprehensively consider their performance and available resources. Satellites can be prioritized or screened according to factors such as signal strength and transmission stability to determine the main set of satellites participating in data transmission.

[0072] Calculating the maximum real-time data transmission volume: For a given set of satellites participating in data transmission, based on parameters such as the data transmission rate of each satellite and the collaborative working method between satellites (e.g., whether data can be transmitted in parallel), the maximum real-time data transmission volume that the hydrological and meteorological monitoring points in the river area can achieve is calculated, using the following formula:

[0073]

[0074] Where D is the total amount of data transmitted, η is the interference factor between multiple satellites, N is the number of satellites, and R is the total amount of data transmitted. i Let be the i-th satellite, and t be the time period.

[0075] The threshold setting module is used to combine historical hydrological and meteorological data of each hydrological and meteorological monitoring point with its location data in the river to set a fluctuation threshold, thereby setting a corresponding fluctuation threshold for each hydrological and meteorological monitoring point. The specific steps are as follows:

[0076] Parameter grouping and statistical analysis: For each hydrological and meteorological parameter (such as water level, flow rate, etc.), the historical data of each monitoring point are grouped. Grouping can be done according to time period (such as daily, monthly, yearly) or according to the hydrological characteristics of the river (such as flood season, dry season). Then, statistical analysis is performed on the data within each group to calculate some basic statistics.

[0077] Adjustments based on location factors: Analyze the impact of the location of monitoring points in the river on hydrological and meteorological parameters. For example, the water level and flow changes of monitoring points located upstream and downstream of the river may have different patterns. Then, adjust the statistics according to location factors.

[0078] Setting fluctuation thresholds: Based on the results of statistical analysis and location adjustments, a fluctuation threshold is set for each hydrological and meteorological parameter at each monitoring point, using the following formula:

[0079] T upper =Max×(1+α)

[0080] T lower =Min×(1-α)

[0081] Among them, T upper T is the upper limit threshold. lower α is the lower limit threshold, Max is the maximum value in the historical data, Min is the minimum value in the historical data, and α is the adjustment coefficient, where 0 < α < 1.

[0082] The river area management unit is used to compare the fluctuation values ​​of hydrological and meteorological data with fluctuation thresholds for anomaly comparison. Hydrological and meteorological monitoring points that exceed the fluctuation thresholds are classified as anomaly areas. Then, based on the anomaly areas, fluctuation values, and river direction, other hydrological and meteorological monitoring points are analyzed for affected and normal areas.

[0083] The river area management unit includes an anomaly comparison module and an area division module;

[0084] The anomaly comparison module is used to analyze the fluctuation values ​​of real-time hydrological and meteorological data of each hydrological and meteorological monitoring point in combination with historical hydrological and meteorological data. Then, it compares the fluctuation values ​​with the fluctuation thresholds. If the fluctuation value exceeds the fluctuation threshold, the hydrological and meteorological monitoring point is determined to be abnormal. Otherwise, if the fluctuation value does not exceed the fluctuation threshold, monitoring continues.

[0085] The region division module is used to divide hydrological and meteorological monitoring points identified as abnormal by the anomaly comparison module into anomaly regions based on their detection range. Then, based on the anomaly regions, fluctuation values, and river direction, an impact analysis is performed on other hydrological and meteorological monitoring points. Hydrological and meteorological monitoring points affected by the anomaly regions are divided into an impact region based on their detection range. Then, hydrological monitoring points that do not belong to the anomaly regions or impact regions are classified as normal regions. The specific steps are as follows:

[0086] Identify anomalous areas: Collect information on all hydrological and meteorological monitoring points that have been identified as anomalous, including their location data (latitude and longitude coordinates, etc.) and monitoring range data (which have been determined in previous steps, such as a certain distance range or a specific area range centered on the monitoring point), and form anomalous areas from these anomalous monitoring points.

[0087] Analyzing river direction: Obtaining river flow direction information can be achieved by obtaining river flow direction vector data through Geographic Information System (GIS) data or other relevant data sources;

[0088] Impact Analysis: For each hydrological and meteorological monitoring point not identified as abnormal (i.e., potentially affected monitoring point), its relative position to the abnormal area is calculated. Combining the fluctuation values ​​of the abnormal area (e.g., abnormal water level changes, abnormal rainfall, etc.) and river direction, it is determined whether the monitoring point will be affected by the abnormal area. The calculation steps are as follows:

[0089] Let the monitoring point P(x1, y1) and a point Q(x2, y2) within the abnormal region be represented by the vector:

[0090]

[0091] Calculate vectors The dot product with the river direction vector is:

[0092]

[0093] when Then monitoring point P is downstream of point Q within the abnormal region;

[0094] when Then it is not in the downstream direction;

[0095] ΔR eff =k R ×ΔR

[0096] Where, ΔR eff The value represents the impact on the affected monitoring points, ΔR represents the fluctuation value of the abnormal area, L represents the distance between the downstream monitoring point and the abnormal area, and k represents the impact value. R R is the attenuation coefficient of the impact of rainfall. cur R represents the current rainfall. upper R represents the upper limit of normal rainfall at the affected monitoring points. cur +ΔR eff >R upper If so, it is believed that the abnormal area will affect the downstream monitoring point.

[0097] Identify the affected area: After impact analysis, determine the detection range of hydrological and meteorological monitoring points that will be affected by the anomaly area, thus forming the affected area;

[0098] Delineate normal areas: All hydrological and meteorological monitoring points that are neither abnormal nor affected areas are designated as normal areas. These monitoring points are not affected by abnormal conditions under the current circumstances.

[0099] When setting up regions, the region division module prioritizes abnormal regions over affected regions, and affected regions over normal regions. When regions overlap, the regions are allocated according to priority.

[0100] For all the divided regions, compare them pairwise to check for overlapping parts. For two polygonal regions, check whether their boundaries intersect or whether one polygon completely contains the other.

[0101] If the overlapping area involves both anomaly and affected areas, the entire overlapping area will be classified as an anomaly area.

[0102] If the overlapping area involves both abnormal and normal areas, the entire overlapping area will be classified as an abnormal area.

[0103] If the overlapping area involves both the affected area and the normal area, the entire overlapping area will be classified as the affected area.

[0104] Ensure that each location belongs to only one area.

[0105] The area adjustment control unit is used to allocate the transmission data volume by combining abnormal areas, affected areas and normal areas, and at the same time calculates and compares the required transmission volume and transmission data volume of all areas, and merges the relevant areas according to the comparison results.

[0106] The regional adjustment control unit includes a control allocation module and a data comparison module;

[0107] The control and allocation module is used to perform a proportion analysis of abnormal areas, affected areas, and normal areas based on the river's geographical data, and to control the amount of data allocated according to the proportion analysis results. The specific steps are as follows:

[0108] D a =D total ×P a

[0109] D b =D total ×P b

[0110] D c =D total ×P c

[0111] Among them, D a The amount of data allocated to the abnormal region, D b To influence the amount of data allocated to a region, D c The amount of data allocated to the normal region, D total P represents the total amount of data transmitted. aP represents the percentage of the area of ​​the anomalous region in the total river area. b To determine the proportion of the area of ​​the influencing region to the total area of ​​the river, P c This represents the percentage of the normal area within the total river area.

[0112] The data comparison module is used to combine the hydrological and meteorological monitoring points corresponding to each type of area to obtain the required transmission volume of each type of area. Then, the required transmission volume is compared with the allocated data volume. When the required transmission volume is greater than the allocated data volume, the relevant areas are merged until the required data volume is less than the allocated data volume.

[0113] When the area adjustment control unit performs data transmission volume control and allocation, each area corresponds to a representative data, and then the transmission is allocated to multiple areas according to priority;

[0114] Meanwhile, when merging related regions, the merging condition is that the regions are of the same type. Multiple regions of the same type are merged, and the hydrological and meteorological data of one hydrological and meteorological monitoring point in the merged region is selected as the representative data of that region.

[0115] You can choose the monitoring point that is most representative of the data, such as the monitoring point located in the center of the region or the monitoring point with small fluctuations in historical data;

[0116] Regional mergers should prioritize merging normal regions, followed by affected regions and then abnormal regions.

[0117] After completing the regional merging and data volume adjustment, each region corresponds to a representative data point (data from the selected monitoring points in that region).

[0118] The Beidou communication transmission unit is used to control and transmit hydrological and meteorological data of the merged area with Beidou communication.

[0119] Data from representative hydrological and meteorological monitoring points in each region are collected and merged. This data includes various parameters such as water level, flow rate, rainfall, temperature, wind speed, and wind direction. The data is then processed, encapsulated according to the data format specified in the BeiDou communication protocol, and then sent out through the BeiDou communication module.

[0120] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydro-meteorological data transmission control system based on Beidou communication, characterized in that: The river management unit, the hydro-meteorological monitoring point management unit, the river area management unit, the area adjustment control unit and the Beidou communication transmission unit are included. The river management unit is used for acquiring geographical data of a river and extracting position data of a hydro-meteorological monitoring point in the geographical data. The hydro-meteorological monitoring point management unit is used for acquiring hydro-meteorological data of each hydro-meteorological monitoring point, acquiring transmission data amount of the Beidou communication and the hydro-meteorological monitoring point, and setting a fluctuation threshold value for each hydro-meteorological monitoring point by combining historical hydro-meteorological data with the position data. The river area management unit is used for comparing a fluctuation value of the hydro-meteorological data with the fluctuation threshold value, dividing a hydro-meteorological monitoring point exceeding the fluctuation threshold value into an abnormal area, and analyzing an influence area and a normal area of other hydro-meteorological monitoring points according to the abnormal area, the fluctuation value and a river direction. The river area management unit includes an abnormal comparison module and an area division module. The abnormal comparison module is used for analyzing a fluctuation value of real-time hydro-meteorological data of each hydro-meteorological monitoring point by combining the real-time hydro-meteorological data with historical hydro-meteorological data, and comparing the fluctuation value with a fluctuation threshold value, so as to determine that the hydro-meteorological monitoring point is abnormal when the fluctuation value exceeds the fluctuation threshold value, and otherwise, continue to monitor. The area division module is used for dividing the hydro-meteorological monitoring point determined to be abnormal by the abnormal comparison module into an abnormal area according to a detection range, and analyzing an influence of other hydro-meteorological monitoring points according to the abnormal area, the fluctuation value and the river direction, so as to divide a hydro-meteorological monitoring point affected by the abnormal area into an influence area according to the detection range, and divide a hydro-meteorological monitoring point not belonging to the abnormal area and the influence area as a normal area. The area adjustment control unit is used for performing transmission control distribution by combining transmission data amount, the abnormal area, the influence area and the normal area, and comparing a required transmission amount of all areas with the transmission data amount, and merging related areas according to a comparison result. The area adjustment control unit includes a control distribution module and a data comparison module. The control distribution module is used for performing proportion analysis by combining the abnormal area, the influence area, the normal area and geographical data of a river, and performing distribution data amount control according to a proportion analysis result. The data comparison module is used for combining corresponding hydro-meteorological monitoring points of each type area, acquiring a required transmission amount of each type area, and comparing the required transmission amount with the distribution data amount, so as to merge related areas when the required transmission amount is greater than the distribution data amount, and until the required transmission amount is less than the distribution data amount. The area adjustment control unit corresponds to a representative data of each area when performing transmission data amount control distribution, and performs transmission distribution according to a priority of multiple areas. When merging related areas, a same type area is merged, a hydro-meteorological data of a hydro-meteorological monitoring point in the merged area is selected as a representative data of the area, a normal area is preferentially merged, and then an influence area and an abnormal area are merged. ​ The Beidou communication transmission unit is used for controlling and transmitting the hydro-meteorological data of the merged region by Beidou communication.

2. The hydro-meteorological data transmission control system based on Beidou communication according to claim 1, characterized in that: The river management unit obtains the river information of the jurisdiction through the ground control center by establishing a data connection with the ground control center, and the river information includes the geographic data of each river and the hydro-meteorological monitoring points matched with each river, and the position data of the hydro-meteorological monitoring points in the geographic data is obtained.

3. The hydro-meteorological data transmission control system based on Beidou communication according to claim 1, characterized in that: The hydro-meteorological monitoring point management unit includes a hydro-meteorological data acquisition module, a Beidou data acquisition module and a threshold setting module. The hydro-meteorological data acquisition module is used for acquiring hydro-meteorological data through the sensors of each hydro-meteorological monitoring point, and analyzing the detection range of each hydro-meteorological monitoring point in the corresponding river by combining the hydro-meteorological monitoring point with the geographic data of the river. The acquired hydro-meteorological data includes real-time hydro-meteorological data and historical hydro-meteorological data. The Beidou data acquisition module is used for acquiring the Beidou communication satellite corresponding to the river, and then combining and calculating the transmission data amount of the acquired Beidou communication satellite to obtain the maximum real-time transmission data amount of the hydro-meteorological monitoring point in the river area. The threshold setting module is used for setting the fluctuation threshold of the historical hydro-meteorological data of each hydro-meteorological monitoring point in the position data in the river, so as to set the corresponding fluctuation threshold for each hydro-meteorological monitoring point.

4. The hydro-meteorological data transmission control system based on Beidou communication according to claim 3, characterized in that: The threshold setting module sets the fluctuation threshold as follows: ； ； where T upper is an upper threshold value, T lower is a lower threshold value, Max is the maximum value in the historical data, Min is the minimum value in the historical data, and a is an adjustment coefficient, 0 < a < 1.

5. The hydro-meteorological data transmission control system based on Beidou communication according to claim 1, characterized in that: The region division module performs the influence analysis as follows: Let the monitoring point P (x1, y1) and a point Q (x2, y2) in the abnormal region be a vector: ； Where x1, y1 are the latitude and longitude coordinates of P, and x2, y2 are the latitude and longitude coordinates of Q. Computing the vector The dot product with the river direction vector is: ； wherein is a river direction vector, v x is an x-component of the river direction vector, v y is a y-component of the river direction vector; When > 0, then the monitoring point P is in the downstream direction of the point Q within the anomaly region; When ≤ 0, not in downstream direction; ； wherein, ΔR eff is the influence value of the affected monitoring point, ΔR is the fluctuation value of the abnormal area, L is the distance between the downstream monitoring point and the abnormal area, k R is the attenuation coefficient of the rainfall influence, R cur is the current rainfall, R upper is the upper limit of the normal rainfall of the affected monitoring point, when R cur + ΔR eff > R upper , it is considered that the abnormal area will have an influence on the downstream monitoring point.

6. The hydro-meteorological data transmission control system based on Beidou communication according to claim 1, characterized in that: When setting the region, the priority of the abnormal region is higher than that of the influence region, and the priority of the influence region is higher than that of the normal region. When dividing the region, when the same region position overlaps, the region position is allocated according to the priority.

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